diff options
| -rw-r--r-- | ANNOUNCE | 1518 | ||||
| -rw-r--r-- | ChangeLog | 7651 | ||||
| -rw-r--r-- | GNUmakefile | 63 | ||||
| -rw-r--r-- | Makefile | 51 | ||||
| -rw-r--r-- | Nmakefile | 48 | ||||
| -rw-r--r-- | pthread.c | 13 | ||||
| -rw-r--r-- | pthread.def | 163 | ||||
| -rw-r--r-- | pthread.h | 331 | ||||
| -rw-r--r-- | pthread_cond_destroy.c | 8 | ||||
| -rw-r--r-- | pthread_key_delete.c | 2 | ||||
| -rw-r--r-- | pthread_rwlock_wrlock.c | 12 | ||||
| -rw-r--r-- | rwlock.c | 3 | ||||
| -rw-r--r-- | sched.h | 28 | ||||
| -rw-r--r-- | semaphore.h | 111 | ||||
| -rw-r--r-- | tests/ChangeLog | 8 | ||||
| -rw-r--r-- | tests/GNUmakefile | 5 | ||||
| -rw-r--r-- | tests/condvar1_2.c | 42 | ||||
| -rw-r--r-- | tests/spin4.c | 45 |
18 files changed, 5045 insertions, 5057 deletions
@@ -1,753 +1,765 @@ - PTHREADS-WIN32 SNAPSHOT 2002-??-?? - ---------------------------------- - Web Site: http://sources.redhat.com/pthreads-win32/ - FTP Site: ftp://sources.redhat.com/pub/pthreads-win32 - Coordinator: Ross Johnson <rpj@ise.canberra.edu.au> - - -We are pleased to announce the availability of a new snapshot of -Pthreads-win32, an Open Source Software implementation of the -Threads component of the POSIX 1003.1 2001 Standard for Microsoft's -Win32 environment. Some functions from other sections of POSIX -1003.1 2001 are also supported including semaphores and scheduling -functions. - -Some common non-portable functions are also implemented for -additional compatibility, as are a few functions specific -to pthreads-win32 for easier integration with Win32 applications. - -Pthreads-win32 is free software, distributed under the GNU Lesser -General Public License (LGPL). - -Please see the 'Acknowledgements' section at the end of this -announcement for the list of contributors. - - -------------------------------- -Changes since the last snapshot -------------------------------- - -Cleanup code default style. (IMPORTANT) ----------------------------------------------------------------------- -Previously, if not defined, the cleanup style was determined automatically -from the compiler/language, and one of the following was defined accordingly: - - __CLEANUP_SEH MSVC only - __CLEANUP_CXX C++, including MSVC++, GNU G++ - __CLEANUP_C C, including GNU GCC, not MSVC - -These defines determine the style of cleanup (see pthread.h) and, -most importantly, the way that cancelation and thread exit (via -pthread_exit) is performed (see the routine ptw32_throw() in private.c). - -In short, the exceptions versions of the library throw an exception -when a thread is canceled or exits (via pthread_exit()), which is -caught by a handler in the thread startup routine, so that the -the correct stack unwinding occurs regardless of where the thread -is when it's canceled or exits via pthread_exit(). - -In this and future snapshots, unless the build explicitly defines (e.g. -via a compiler option) __CLEANUP_SEH, __CLEANUP_CXX, or __CLEANUP_C, then -the build NOW always defaults to __CLEANUP_C style cleanup. This style -uses setjmp/longjmp in the cancelation and pthread_exit implementations, -and therefore won't do stack unwinding even when linked to applications -that have it (e.g. C++ apps). This is for consistency with most -current commercial Unix POSIX threads implementations. Compaq's TRU64 -may be an exception (no pun intended) and possible future trend. - -Although it was not clearly documented before, it is still necessary to -build your application using the same __CLEANUP_* define as was -used for the version of the library that you link with, so that the -correct parts of pthread.h are included. That is, the possible -defines require the following library versions: - - __CLEANUP_SEH pthreadVSE.dll - __CLEANUP_CXX pthreadVCE.dll or pthreadGCE.dll - __CLEANUP_C pthreadVC.dll or pthreadGC.dll - -E.g. regardless of whether your app is C or C++, if you link with -pthreadVC.lib or libpthreadGC.a, then you must define __CLEANUP_C. - - -THE POINT OF ALL THIS IS: if you have not been defining one of these -explicitly, then the defaults as described at the top of this -section were being used. - -THIS NOW CHANGES, as has been explained above, but to try to make this -clearer here's an example: - -If you were building your application with MSVC++ i.e. using C++ -exceptions and not explicitly defining one of __CLEANUP_*, then -__CLEANUP_C++ was automatically defined for you in pthread.h. -You should have been linking with pthreadVCE.dll, which does -stack unwinding. - -If you now build your application as you had before, pthread.h will now -automatically set __CLEANUP_C as the default style, and you will need to -link with pthreadVC.dll. Stack unwinding will now NOT occur when a thread -is canceled, or the thread calls pthread_exit(). - -Your application will now most likely behave differently to previous -versions, and in non-obvious ways. Most likely is that locally -instantiated objects may not be destroyed or cleaned up after a thread -is canceled. - -If you want the same behaviour as before, then you must now define -__CLEANUP_C++ explicitly using a compiler option and link with -pthreadVCE.dll as you did before. - - -WHY ARE WE MAKING THE DEFAULT STYLE LESS EXCEPTION-FRIENDLY? -Because no commercial Unix POSIX threads implementation allows you to -choose to have stack unwinding. Therefore, providing it in pthread-win32 -as a default is dangerous. We still provide the choice but unless -you consciously choose to do otherwise, your pthreads applications will -now run or crash in similar ways irrespective of the threads platform -you use. Or at least this is the hope. - - -WHY NOT REMOVE THE EXCEPTIONS VERSIONS OF THE LIBRARY ALTOGETHER? -There are a few reasons: -- because there are well respected POSIX threads people who believe - that POSIX threads implementations should be exceptions aware and - do the expected thing in that context. (There are equally respected - people who believe it should not be easily accessible, if it's there - at all, for unconditional conformity to other implementations.) -- because pthreads-win32 is one of the few implementations that has - the choice, perhaps the only freely available one, and so offers - a laboratory to people who may want to explore the effects; -- although the code will always be around somewhere for anyone who - wants it, once it's removed from the current version it will not be - nearly as visible to people who may have a use for it. - - -Source module splitting ------------------------ -In order to enable smaller image sizes to be generated -for applications that link statically with the library, -most routines have been separated out into individual -source code files. - -This is being done in such a way as to be backward compatible. -The old source files are reused to congregate the individual -routine files into larger translation units (via a bunch of -# includes) so that the compiler can still optimise wherever -possible, e.g. through inlining, which can only be done -within the same translation unit. - -It is also possible to build the entire library by compiling -the single file named "pthread.c", which just #includes all -the secondary congregation source files. The compiler -may be able to use this to do more inlining of routines. - -Although the GNU compiler is able to produce libraries with -the necessary separation (the -ffunction-segments switch), -AFAIK, the MSVC and other compilers don't have this feature. - -Finally, since I use makefiles and command-line compilation, -I don't know what havoc this reorganisation may wreak amongst -IDE project file users. You should be able to continue -using your existing project files without modification. - - -New non-portable function -------------------------- -pthread_num_processors_np(): Returns the number of processors -in the system that are available to the process, as determined -from the processor affinity mask. - - -Platform dependence -------------------- -As Win95 doesn't provide one, the library now contains -it's own InterlockedCompareExchange() routine, which is used -whenever Windows doesn't provide it. InterlockedCompareExchange() -is used to implement spinlocks and barriers, and also in mutexes. -This routine relies on the CMPXCHG machine instruction which -is not available on i386 CPUs. This library (from snapshot -20010712 onwards) is therefore no longer supported on i386 -processor platforms. - - -New standard routines ---------------------- -For source code portability only - rwlocks cannot be process shared yet. - - pthread_rwlockattr_init() - pthread_rwlockattr_destroy() - pthread_rwlockattr_setpshared() - pthread_rwlockattr_getpshared() - -As defined in the new POSIX standard, and the Single Unix Spec version 3: - - sem_timedwait() - pthread_mutex_timedlock() - - -New non-portable routine ------------------------- -To improve tolerance against operator or time service initiated -system clock changes, the following routine is provided: - - pthread_timechange_handler_np() - -This routine can be called by an application when it -receives a WM_TIMECHANGE message from the system. At present -it broadcasts all condition variables so that waiting threads -can wake up and re-evaluate their conditions and restart -their timed waits if required. -- Suggested by Alexander Terekhov - -pthread.h no longer includes windows.h --------------------------------------- -[Not yet for G++] - -This was done to prevent conflicts. - -HANDLE, DWORD, and NULL are temporarily defined within pthread.h if -they are not already. - - -Bug fixes ---------- -* Fixed potential NULL pointer dereferences in pthread_mutexattr_init, -pthread_mutexattr_getpshared, pthread_barrierattr_init, -pthread_barrierattr_getpshared, and pthread_condattr_getpshared. -- Scott McCaskill <scott@magruder.org> - -* Removed potential race condition in pthread_mutex_trylock and -pthread_mutex_lock; -- Alexander Terekhov <TEREKHOV@de.ibm.com> - -* The behaviour of pthread_mutex_trylock in relation to -recursive mutexes was inconsistent with commercial implementations. -Trylock would return EBUSY if the lock was owned already by the -calling thread regardless of mutex type. Trylock now increments the -recursion count and returns 0 for RECURSIVE mutexes, and will -return EDEADLK rather than EBUSY for ERRORCHECK mutexes. This is -consistent with Solaris. -- Thomas Pfaff <tpfaff@gmx.net> - -* Found a fix for the library and workaround for applications for -the known bug #2, i.e. where __CLEANUP_CXX or __CLEANUP_SEH is defined. -See the "Known Bugs in this snapshot" section below. - -This could be made transparent to applications by replacing the macros that -define the current C++ and SEH versions of pthread_cleanup_push/pop -with the C version, but AFAIK cleanup handlers would not then run in the -correct sequence with destructors and exception cleanup handlers when -an exception occurs. - -* Cancelation once started in a thread cannot now be inadvertantly -double canceled. That is, once a thread begins it's cancelation run, -cancelation is disabled and a subsequent cancel request will -return an error (ESRCH). - - ---------------------------- -Known bugs in this snapshot ---------------------------- - -1. Under MS VC++ (only tested with version 6.0), a term_func - set via the standard C++ set_terminate() function is not called - for some reason. The code in private.c ptw32_threadStart() - retrieves and calls the user supplied terminate routine, which - works as expected under MinGW32 g++, but doesn't run under - MS VC++ 6.0, presumably because set_terminate() returns NULL. - -2. Cancellation problems in optimised code - - Milan Gardian - - Workaround [rpj - 2 Feb 2002] - ----------------------------- - The problem disappears when /Ob0 is used, i.e. /O2 /Ob0 works OK, - but if you want to use inlining optimisation you can be much more - specific about where it's switched off and on by using a pragma. - - So the inlining optimisation is interfering with the way that cleanup - handlers are run. It appears to relate to auto-inlining of class methods - since this is the only auto inlining that is performed at /O1 optimisation - (functions with the "inline" qualifier are also inlined, but the problem - doesn't appear to involve any such functions in the library or testsuite). - - In order to confirm the inlining culprit, the following use of pragmas - eliminate the problem but I don't know how to make it transparent, putting - it in, say, pthread.h where pthread_cleanup_push defined as a macro. - - #pragma inline_depth(0) - pthread_cleanup_push(handlerFunc, (void *) &arg); - - /* ... */ - - pthread_cleanup_pop(0); - #pragma inline_depth() - - Note the empty () value after the pop macro. This resets depth to the - default. Or you can specify a non-zero depth here. - - The pragma is also needed (and now used) within the library itself wherever - cleanup handlers are used (condvar.c and rwlock.c). - - Use of these pragmas allows compiler optimisations /O1 and /O2 to be - used for either or both the library and applications. - - Experimenting further, I found that wrapping the actual cleanup handler - function with #pragma auto_inline(off|on) does NOT work. - - MSVC6.0 doesn't appear to support the C99 standard's _Pragma directive, - however, later versions may. This form is embeddable inside #define - macros, which would be ideal because it would mean that it could be added - to the push/pop macro definitions in pthread.h and hidden from the - application programmer. - - [/rpj] - - Original problem description - ---------------------------- - - The cancellation (actually, cleanup-after-cancel) tests fail when using VC - (professional) optimisation switches (/O1 or /O2) in pthreads library. I - have not investigated which concrete optimisation technique causes this - problem (/Og, /Oi, /Ot, /Oy, /Ob1, /Gs, /Gf, /Gy, etc.), but here is a - summary of builds and corresponding failures: - - * pthreads VSE (optimised tests): OK - * pthreads VCE (optimised tests): Failed "cleanup1" test (runtime) - - * pthreads VSE (DLL in CRT, optimised tests): OK - * pthreads VCE (DLL in CRT, optimised tests): Failed "cleanup1" test - (runtime) - - Please note that while in VSE version of the pthreads library the - optimisation does not really have any impact on the tests (they pass OK), in - VCE version addition of optimisation (/O2 in this case) causes the tests to - fail uniformly - either in "cleanup0" or "cleanup1" test cases. - - Please note that all the tests above use default pthreads DLL (no - optimisations, linked with either static or DLL CRT, based on test type). - Therefore the problem lies not within the pthreads DLL but within the - compiled client code (the application using pthreads -> involvement of - "pthread.h"). - - I think the message of this section is that usage of VCE version of pthreads - in applications relying on cancellation/cleanup AND using optimisations for - creation of production code is highly unreliable for the current version of - the pthreads library. - - -Caveats -------- - -1. Due to what is believed to be a C++ compliance error in VC++, -if your application contains catch(...) blocks in your POSIX threads -then you will need to replace the "catch(...)" with the macro -"PtW32Catch", eg. - - #ifdef PtW32Catch - PtW32Catch { - ... - } - #else - catch(...) { - ... - } - #endif - -Otherwise neither pthreads cancelation nor pthread_exit() will work -reliably. - - -Level of standards conformance ------------------------------- - -The following POSIX 1003.1c/1b/1j options are defined: - - _POSIX_THREADS - _POSIX_THREAD_SAFE_FUNCTIONS - _POSIX_THREAD_ATTR_STACKSIZE - _POSIX_THREAD_PRIORITY_SCHEDULING - _POSIX_SEMAPHORES - _POSIX_READER_WRITER_LOCKS - _POSIX_SPIN_LOCKS - _POSIX_BARRIERS - - -The following POSIX 1003.1c options are not defined: - - _POSIX_THREAD_ATTR_STACKADDR - _POSIX_THREAD_PRIO_INHERIT - _POSIX_THREAD_PRIO_PROTECT - _POSIX_THREAD_PROCESS_SHARED - - -The following functions are implemented: - - --------------------------- - PThreads - --------------------------- - pthread_attr_init - pthread_attr_destroy - pthread_attr_getdetachstate - pthread_attr_getstackaddr - pthread_attr_getstacksize - pthread_attr_setdetachstate - pthread_attr_setstackaddr - pthread_attr_setstacksize - - pthread_create - pthread_detach - pthread_equal - pthread_exit - pthread_join - pthread_once - pthread_self - - pthread_cancel - pthread_cleanup_pop - pthread_cleanup_push - pthread_setcancelstate - pthread_setcanceltype - pthread_testcancel - - --------------------------- - Thread Specific Data - --------------------------- - pthread_key_create - pthread_key_delete - pthread_setspecific - pthread_getspecific - - --------------------------- - Mutexes - --------------------------- - pthread_mutexattr_init - pthread_mutexattr_destroy - pthread_mutexattr_getpshared - pthread_mutexattr_setpshared - pthread_mutexattr_gettype - pthread_mutexattr_settype (types: PTHREAD_MUTEX_DEFAULT - PTHREAD_MUTEX_NORMAL - PTHREAD_MUTEX_ERRORCHECK - PTHREAD_MUTEX_RECURSIVE ) - pthread_mutex_init - pthread_mutex_destroy - pthread_mutex_lock - pthread_mutex_trylock - pthread_mutex_timedlock - pthread_mutex_unlock - - --------------------------- - Condition Variables - --------------------------- - pthread_condattr_init - pthread_condattr_destroy - pthread_condattr_getpshared - pthread_condattr_setpshared - - pthread_cond_init - pthread_cond_destroy - pthread_cond_wait - pthread_cond_timedwait - pthread_cond_signal - pthread_cond_broadcast - - --------------------------- - Read/Write Locks - POSIX 1j - --------------------------- - pthread_rwlock_init - pthread_rwlock_destroy - pthread_rwlock_tryrdlock - pthread_rwlock_trywrlock - pthread_rwlock_rdlock - pthread_rwlock_rwlock - pthread_rwlock_unlock - pthread_rwlockattr_init - pthread_rwlockattr_destroy - pthread_rwlockattr_getpshared - pthread_rwlockattr_setpshared - - --------------------------- - Spin Locks - POSIX 1j - --------------------------- - pthread_spin_init - pthread_spin_destroy - pthread_spin_lock - pthread_spin_unlock - pthread_spin_trylock - - --------------------------- - Barriers - POSIX 1j - --------------------------- - pthread_barrier_init - pthread_barrier_destroy - pthread_barrier_wait - pthread_barrierattr_init - pthread_barrierattr_destroy - pthread_barrierattr_getpshared - pthread_barrierattr_setpshared - - --------------------------- - Semaphores - POSIX 1b - --------------------------- - sem_init - sem_destroy - sem_post - sem_wait - sem_trywait - sem_timedwait - sem_open (returns an error ENOSYS) - sem_close (returns an error ENOSYS) - sem_unlink (returns an error ENOSYS) - sem_getvalue (returns an error ENOSYS) - - --------------------------- - RealTime Scheduling - --------------------------- - pthread_attr_getschedparam - pthread_attr_setschedparam - pthread_attr_getinheritsched - pthread_attr_setinheritsched - pthread_attr_getschedpolicy (only supports SCHED_OTHER) - pthread_attr_setschedpolicy (only supports SCHED_OTHER) - pthread_getschedparam - pthread_setschedparam - pthread_getconcurrency - pthread_setconcurrency - pthread_attr_getscope - pthread_attr_setscope (only supports PTHREAD_SCOPE_SYSTEM) - sched_get_priority_max (POSIX 1b) - sched_get_priority_min (POSIX 1b) - sched_rr_get_interval (POSIX 1b - returns an error ENOTSUP) - sched_setscheduler (POSIX 1b - only supports SCHED_OTHER) - sched_getscheduler (POSIX 1b - only supports SCHED_OTHER) - sched_yield (POSIX 1b) - - --------------------------- - Signals - --------------------------- - pthread_sigmask - - --------------------------- - Non-portable routines (see the README.NONPORTABLE file for usage) - --------------------------- - pthread_getw32threadhandle_np - pthread_timechange_handler_np - pthread_delay_np - pthread_mutexattr_getkind_np - pthread_mutexattr_setkind_np (types: PTHREAD_MUTEX_FAST_NP, - PTHREAD_MUTEX_ERRORCHECK_NP, - PTHREAD_MUTEX_RECURSIVE_NP, - PTHREAD_MUTEX_ADAPTIVE_NP, - PTHREAD_MUTEX_TIMED_NP) - pthread_num_processors_np - pthread_win32_process_attach_np (Required when statically linking the library) - pthread_win32_process_detach_np (Required when statically linking the library) - pthread_win32_thread_attach_np (Required when statically linking the library) - pthread_win32_thread_detach_np (Required when statically linking the library) - - --------------------------- - Static Initializers - --------------------------- - PTHREAD_ONCE_INIT - PTHREAD_MUTEX_INITIALIZER - PTHREAD_COND_INITIALIZER - PTHREAD_RWLOCK_INITIALIZER - PTHREAD_SPINLOCK_INITIALIZER - - --------------------------- - Thread-Safe C Runtime Library (macros) - --------------------------- - strtok_r - asctime_r - ctime_r - gmtime_r - localtime_r - rand_r - - -The following functions are not implemented: - - --------------------------- - RealTime Scheduling - --------------------------- - pthread_mutex_getprioceiling - pthread_mutex_setprioceiling - pthread_mutex_attr_getprioceiling - pthread_mutex_attr_getprotocol - pthread_mutex_attr_setprioceiling - pthread_mutex_attr_setprotocol - - --------------------------- - Fork Handlers - --------------------------- - pthread_atfork - - --------------------------- - Stdio - --------------------------- - flockfile - ftrylockfile - funlockfile - getc_unlocked - getchar_unlocked - putc_unlocked - putchar_unlocked - - --------------------------- - Thread-Safe C Runtime Library - --------------------------- - readdir_r - getgrgid_r - getgrnam_r - getpwuid_r - getpwnam_r - - --------------------------- - Signals - --------------------------- - pthread_kill - sigtimedwait - sigwait - sigwaitinfo - - -The library includes two non-API functions for creating cancellation -points in applications and libraries: - - pthreadCancelableWait - pthreadCancelableTimedWait - - -Availability ------------- - -The prebuilt DLL, export libs (for both MSVC and Mingw32), and the header -files (pthread.h, semaphore.h, sched.h) are available along with the -complete source code. - -The source code can be found at: - - ftp://sources.redhat.com/pub/pthreads-win32 - -and as individual source code files at - - ftp://sources.redhat.com/pub/pthreads-win32/source - -The pre-built DLL, export libraries and include files can be found at: - - ftp://sources.redhat.com/pub/pthreads-win32/dll-latest - - - -Mailing List ------------- - -There is a mailing list for discussing pthreads on Win32. To join, -send email to: - - pthreads-win32-subscribe@sourceware.cygnus.com - - -Application Development Environments ------------------------------------- - -See the README file for more information. - -MSVC: -MSVC using SEH works. Distribute pthreadVSE.dll with your application. -MSVC using C++ EH works. Distribute pthreadVCE.dll with your application. -MSVC using C setjmp/longjmp works. Distribute pthreadVC.dll with your application. - - -Mingw32: -See FAQ Questions 6 and 10. - -Mingw using C++ EH works. Distribute pthreadGCE.dll with your application. -Mingw using C setjmp/longjmp works. Distribute pthreadGC.dll with your application. - - -Cygwin: (http://sourceware.cygnus.com/cygwin/) -Developers using Cygwin will not need pthreads-win32 since it has POSIX threads -support. Refer to its documentation for details and extent. - - -UWIN: -UWIN is a complete Unix-like environment for Windows from AT&T. Pthreads-win32 -doesn't currently support UWIN (and vice versa), but that may change in the -future. - -Generally: -For convenience, the following pre-built files are available on the FTP site -(see Availability above): - - pthread.h - for POSIX 1c threads - semaphore.h - for POSIX 1b semaphores - sched.h - for POSIX 1b scheduling - pthreadVCE.dll - built with MSVC++ compiler using C++ EH - pthreadVCE.lib - pthreadVC.dll - built with MSVC compiler using C setjmp/longjmp - pthreadVC.lib - pthreadVSE.dll - built with MSVC compiler using SEH - pthreadVSE.lib - pthreadGCE.dll - built with Mingw32 G++ 2.95.2-1 - pthreadGC.dll - built with Mingw32 GCC 2.95.2-1 using setjmp/longjmp - libpthreadGCE.a - derived from pthreadGCE.dll - libpthreadGC.a - derived from pthreadGC.dll - gcc.dll - needed if distributing applications that use pthreadGCE.dll - -These are the only files you need in order to build POSIX threads -applications for Win32 using either MSVC or Mingw32. - -See the FAQ file in the source tree for additional information. - - -Documentation -------------- - -Currently, there is no documentation included in the package apart -from the copious comments in the source code. - -For POSIX Thread API programming, several reference books are -available: - - Programming with POSIX Threads - David R. Butenhof - Addison-Wesley (pub) - - Pthreads Programming - By Bradford Nichols, Dick Buttlar & Jacqueline Proulx Farrell - O'Reilly (pub) - -On the web: see the links at the bottom of the pthreads-win32 site: - - http://sources.redhat.com/pthreads-win32/ - - -Acknowledgements ----------------- - -This library is based substantially on a Win32 pthreads -implementation contributed by John Bossom <John.Bossom@cognos.com>. - -The implementation of Condition Variables uses algorithms developed -by Alexander Terekhov and Louis Thomas. - -The implementation of POSIX mutexes has been improved by Thomas Pfaff. - -The implementation of read/write locks was contributed by -Aurelio Medina and improved by Alexander Terekhov. - -Many others have contributed significant time and effort to solve critical -problems in order to make the library workable, robust and reliable. - -There is also a separate CONTRIBUTORS file. This file and others are -on the web site: - - http://sources.redhat.com/pthreads-win32 - -As much as possible, the ChangeLog file acknowledges contributions to the -code base in more detail. - -Enjoy! - -Ross Johnson + PTHREADS-WIN32 SNAPSHOT 2002-??-??
+ ----------------------------------
+ Web Site: http://sources.redhat.com/pthreads-win32/
+ FTP Site: ftp://sources.redhat.com/pub/pthreads-win32
+ Coordinator: Ross Johnson <rpj@ise.canberra.edu.au>
+
+
+We are pleased to announce the availability of a new snapshot of
+Pthreads-win32, an Open Source Software implementation of the
+Threads component of the POSIX 1003.1 2001 Standard for Microsoft's
+Win32 environment. Some functions from other sections of POSIX
+1003.1 2001 are also supported including semaphores and scheduling
+functions.
+
+Some common non-portable functions are also implemented for
+additional compatibility, as are a few functions specific
+to pthreads-win32 for easier integration with Win32 applications.
+
+Pthreads-win32 is free software, distributed under the GNU Lesser
+General Public License (LGPL).
+
+Please see the 'Acknowledgements' section at the end of this
+announcement for the list of contributors.
+
+
+-------------------------------
+Changes since the last snapshot
+-------------------------------
+
+Cleanup code default style. (IMPORTANT)
+----------------------------------------------------------------------
+Previously, if not defined, the cleanup style was determined automatically
+from the compiler/language, and one of the following was defined accordingly:
+
+ __CLEANUP_SEH MSVC only
+ __CLEANUP_CXX C++, including MSVC++, GNU G++
+ __CLEANUP_C C, including GNU GCC, not MSVC
+
+These defines determine the style of cleanup (see pthread.h) and,
+most importantly, the way that cancelation and thread exit (via
+pthread_exit) is performed (see the routine ptw32_throw() in private.c).
+
+In short, the exceptions versions of the library throw an exception
+when a thread is canceled or exits (via pthread_exit()), which is
+caught by a handler in the thread startup routine, so that the
+the correct stack unwinding occurs regardless of where the thread
+is when it's canceled or exits via pthread_exit().
+
+In this and future snapshots, unless the build explicitly defines (e.g.
+via a compiler option) __CLEANUP_SEH, __CLEANUP_CXX, or __CLEANUP_C, then
+the build NOW always defaults to __CLEANUP_C style cleanup. This style
+uses setjmp/longjmp in the cancelation and pthread_exit implementations,
+and therefore won't do stack unwinding even when linked to applications
+that have it (e.g. C++ apps). This is for consistency with most
+current commercial Unix POSIX threads implementations. Compaq's TRU64
+may be an exception (no pun intended) and possible future trend.
+
+Although it was not clearly documented before, it is still necessary to
+build your application using the same __CLEANUP_* define as was
+used for the version of the library that you link with, so that the
+correct parts of pthread.h are included. That is, the possible
+defines require the following library versions:
+
+ __CLEANUP_SEH pthreadVSE.dll
+ __CLEANUP_CXX pthreadVCE.dll or pthreadGCE.dll
+ __CLEANUP_C pthreadVC.dll or pthreadGC.dll
+
+E.g. regardless of whether your app is C or C++, if you link with
+pthreadVC.lib or libpthreadGC.a, then you must define __CLEANUP_C.
+
+
+THE POINT OF ALL THIS IS: if you have not been defining one of these
+explicitly, then the defaults as described at the top of this
+section were being used.
+
+THIS NOW CHANGES, as has been explained above, but to try to make this
+clearer here's an example:
+
+If you were building your application with MSVC++ i.e. using C++
+exceptions and not explicitly defining one of __CLEANUP_*, then
+__CLEANUP_C++ was automatically defined for you in pthread.h.
+You should have been linking with pthreadVCE.dll, which does
+stack unwinding.
+
+If you now build your application as you had before, pthread.h will now
+automatically set __CLEANUP_C as the default style, and you will need to
+link with pthreadVC.dll. Stack unwinding will now NOT occur when a thread
+is canceled, or the thread calls pthread_exit().
+
+Your application will now most likely behave differently to previous
+versions, and in non-obvious ways. Most likely is that locally
+instantiated objects may not be destroyed or cleaned up after a thread
+is canceled.
+
+If you want the same behaviour as before, then you must now define
+__CLEANUP_C++ explicitly using a compiler option and link with
+pthreadVCE.dll as you did before.
+
+
+WHY ARE WE MAKING THE DEFAULT STYLE LESS EXCEPTION-FRIENDLY?
+Because no commercial Unix POSIX threads implementation allows you to
+choose to have stack unwinding. Therefore, providing it in pthread-win32
+as a default is dangerous. We still provide the choice but unless
+you consciously choose to do otherwise, your pthreads applications will
+now run or crash in similar ways irrespective of the threads platform
+you use. Or at least this is the hope.
+
+
+WHY NOT REMOVE THE EXCEPTIONS VERSIONS OF THE LIBRARY ALTOGETHER?
+There are a few reasons:
+- because there are well respected POSIX threads people who believe
+ that POSIX threads implementations should be exceptions aware and
+ do the expected thing in that context. (There are equally respected
+ people who believe it should not be easily accessible, if it's there
+ at all, for unconditional conformity to other implementations.)
+- because pthreads-win32 is one of the few implementations that has
+ the choice, perhaps the only freely available one, and so offers
+ a laboratory to people who may want to explore the effects;
+- although the code will always be around somewhere for anyone who
+ wants it, once it's removed from the current version it will not be
+ nearly as visible to people who may have a use for it.
+
+
+Source module splitting
+-----------------------
+In order to enable smaller image sizes to be generated
+for applications that link statically with the library,
+most routines have been separated out into individual
+source code files.
+
+This is being done in such a way as to be backward compatible.
+The old source files are reused to congregate the individual
+routine files into larger translation units (via a bunch of
+# includes) so that the compiler can still optimise wherever
+possible, e.g. through inlining, which can only be done
+within the same translation unit.
+
+It is also possible to build the entire library by compiling
+the single file named "pthread.c", which just #includes all
+the secondary congregation source files. The compiler
+may be able to use this to do more inlining of routines.
+
+Although the GNU compiler is able to produce libraries with
+the necessary separation (the -ffunction-segments switch),
+AFAIK, the MSVC and other compilers don't have this feature.
+
+Finally, since I use makefiles and command-line compilation,
+I don't know what havoc this reorganisation may wreak amongst
+IDE project file users. You should be able to continue
+using your existing project files without modification.
+
+
+New non-portable function
+-------------------------
+pthread_num_processors_np(): Returns the number of processors
+in the system that are available to the process, as determined
+from the processor affinity mask.
+
+
+Platform dependence
+-------------------
+As Win95 doesn't provide one, the library now contains
+it's own InterlockedCompareExchange() routine, which is used
+whenever Windows doesn't provide it. InterlockedCompareExchange()
+is used to implement spinlocks and barriers, and also in mutexes.
+This routine relies on the CMPXCHG machine instruction which
+is not available on i386 CPUs. This library (from snapshot
+20010712 onwards) is therefore no longer supported on i386
+processor platforms.
+
+
+New standard routines
+---------------------
+For source code portability only - rwlocks cannot be process shared yet.
+
+ pthread_rwlockattr_init()
+ pthread_rwlockattr_destroy()
+ pthread_rwlockattr_setpshared()
+ pthread_rwlockattr_getpshared()
+
+As defined in the new POSIX standard, and the Single Unix Spec version 3:
+
+ sem_timedwait()
+ pthread_mutex_timedlock()
+ pthread_rwlock_timedrdlock()
+ pthread_rwlock_timedwrlock()
+
+
+New non-portable routine
+------------------------
+To improve tolerance against operator or time service initiated
+system clock changes, the following routine is provided:
+
+ pthread_timechange_handler_np()
+
+This routine can be called by an application when it
+receives a WM_TIMECHANGE message from the system. At present
+it broadcasts all condition variables so that waiting threads
+can wake up and re-evaluate their conditions and restart
+their timed waits if required.
+- Suggested by Alexander Terekhov
+
+
+pthread.h no longer includes windows.h
+--------------------------------------
+[Not yet for G++]
+
+This was done to prevent conflicts.
+
+HANDLE, DWORD, and NULL are temporarily defined within pthread.h if
+they are not already.
+
+
+pthread.h, sched.h and semaphore.h now use dllexport/dllimport
+--------------------------------------------------------------
+Not only to avoid the need for the pthread.def file, but to
+improve performance. Apparently, declaring functions with dllimport
+generates a direct call to the function and avoids the overhead
+of a stub function call.
+
+Bug fixes
+---------
+* Fixed potential NULL pointer dereferences in pthread_mutexattr_init,
+pthread_mutexattr_getpshared, pthread_barrierattr_init,
+pthread_barrierattr_getpshared, and pthread_condattr_getpshared.
+- Scott McCaskill <scott@magruder.org>
+
+* Removed potential race condition in pthread_mutex_trylock and
+pthread_mutex_lock;
+- Alexander Terekhov <TEREKHOV@de.ibm.com>
+
+* The behaviour of pthread_mutex_trylock in relation to
+recursive mutexes was inconsistent with commercial implementations.
+Trylock would return EBUSY if the lock was owned already by the
+calling thread regardless of mutex type. Trylock now increments the
+recursion count and returns 0 for RECURSIVE mutexes, and will
+return EDEADLK rather than EBUSY for ERRORCHECK mutexes. This is
+consistent with Solaris.
+- Thomas Pfaff <tpfaff@gmx.net>
+
+* Found a fix for the library and workaround for applications for
+the known bug #2, i.e. where __CLEANUP_CXX or __CLEANUP_SEH is defined.
+See the "Known Bugs in this snapshot" section below.
+
+This could be made transparent to applications by replacing the macros that
+define the current C++ and SEH versions of pthread_cleanup_push/pop
+with the C version, but AFAIK cleanup handlers would not then run in the
+correct sequence with destructors and exception cleanup handlers when
+an exception occurs.
+
+* Cancelation once started in a thread cannot now be inadvertantly
+double canceled. That is, once a thread begins it's cancelation run,
+cancelation is disabled and a subsequent cancel request will
+return an error (ESRCH).
+
+
+---------------------------
+Known bugs in this snapshot
+---------------------------
+
+1. Under MS VC++ (only tested with version 6.0), a term_func
+ set via the standard C++ set_terminate() function is not called
+ for some reason. The code in private.c ptw32_threadStart()
+ retrieves and calls the user supplied terminate routine, which
+ works as expected under MinGW32 g++, but doesn't run under
+ MS VC++ 6.0, presumably because set_terminate() returns NULL.
+
+2. Cancellation problems in optimised code
+ - Milan Gardian
+
+ Workaround [rpj - 2 Feb 2002]
+ -----------------------------
+ The problem disappears when /Ob0 is used, i.e. /O2 /Ob0 works OK,
+ but if you want to use inlining optimisation you can be much more
+ specific about where it's switched off and on by using a pragma.
+
+ So the inlining optimisation is interfering with the way that cleanup
+ handlers are run. It appears to relate to auto-inlining of class methods
+ since this is the only auto inlining that is performed at /O1 optimisation
+ (functions with the "inline" qualifier are also inlined, but the problem
+ doesn't appear to involve any such functions in the library or testsuite).
+
+ In order to confirm the inlining culprit, the following use of pragmas
+ eliminate the problem but I don't know how to make it transparent, putting
+ it in, say, pthread.h where pthread_cleanup_push defined as a macro.
+
+ #pragma inline_depth(0)
+ pthread_cleanup_push(handlerFunc, (void *) &arg);
+
+ /* ... */
+
+ pthread_cleanup_pop(0);
+ #pragma inline_depth()
+
+ Note the empty () value after the pop macro. This resets depth to the
+ default. Or you can specify a non-zero depth here.
+
+ The pragma is also needed (and now used) within the library itself wherever
+ cleanup handlers are used (condvar.c and rwlock.c).
+
+ Use of these pragmas allows compiler optimisations /O1 and /O2 to be
+ used for either or both the library and applications.
+
+ Experimenting further, I found that wrapping the actual cleanup handler
+ function with #pragma auto_inline(off|on) does NOT work.
+
+ MSVC6.0 doesn't appear to support the C99 standard's _Pragma directive,
+ however, later versions may. This form is embeddable inside #define
+ macros, which would be ideal because it would mean that it could be added
+ to the push/pop macro definitions in pthread.h and hidden from the
+ application programmer.
+
+ [/rpj]
+
+ Original problem description
+ ----------------------------
+
+ The cancellation (actually, cleanup-after-cancel) tests fail when using VC
+ (professional) optimisation switches (/O1 or /O2) in pthreads library. I
+ have not investigated which concrete optimisation technique causes this
+ problem (/Og, /Oi, /Ot, /Oy, /Ob1, /Gs, /Gf, /Gy, etc.), but here is a
+ summary of builds and corresponding failures:
+
+ * pthreads VSE (optimised tests): OK
+ * pthreads VCE (optimised tests): Failed "cleanup1" test (runtime)
+
+ * pthreads VSE (DLL in CRT, optimised tests): OK
+ * pthreads VCE (DLL in CRT, optimised tests): Failed "cleanup1" test
+ (runtime)
+
+ Please note that while in VSE version of the pthreads library the
+ optimisation does not really have any impact on the tests (they pass OK), in
+ VCE version addition of optimisation (/O2 in this case) causes the tests to
+ fail uniformly - either in "cleanup0" or "cleanup1" test cases.
+
+ Please note that all the tests above use default pthreads DLL (no
+ optimisations, linked with either static or DLL CRT, based on test type).
+ Therefore the problem lies not within the pthreads DLL but within the
+ compiled client code (the application using pthreads -> involvement of
+ "pthread.h").
+
+ I think the message of this section is that usage of VCE version of pthreads
+ in applications relying on cancellation/cleanup AND using optimisations for
+ creation of production code is highly unreliable for the current version of
+ the pthreads library.
+
+
+Caveats
+-------
+
+1. Due to what is believed to be a C++ compliance error in VC++,
+if your application contains catch(...) blocks in your POSIX threads
+then you will need to replace the "catch(...)" with the macro
+"PtW32Catch", eg.
+
+ #ifdef PtW32Catch
+ PtW32Catch {
+ ...
+ }
+ #else
+ catch(...) {
+ ...
+ }
+ #endif
+
+Otherwise neither pthreads cancelation nor pthread_exit() will work
+reliably.
+
+
+Level of standards conformance
+------------------------------
+
+The following POSIX 1003.1c/1b/1j options are defined:
+
+ _POSIX_THREADS
+ _POSIX_THREAD_SAFE_FUNCTIONS
+ _POSIX_THREAD_ATTR_STACKSIZE
+ _POSIX_THREAD_PRIORITY_SCHEDULING
+ _POSIX_SEMAPHORES
+ _POSIX_READER_WRITER_LOCKS
+ _POSIX_SPIN_LOCKS
+ _POSIX_BARRIERS
+
+
+The following POSIX 1003.1c options are not defined:
+
+ _POSIX_THREAD_ATTR_STACKADDR
+ _POSIX_THREAD_PRIO_INHERIT
+ _POSIX_THREAD_PRIO_PROTECT
+ _POSIX_THREAD_PROCESS_SHARED
+
+
+The following functions are implemented:
+
+ ---------------------------
+ PThreads
+ ---------------------------
+ pthread_attr_init
+ pthread_attr_destroy
+ pthread_attr_getdetachstate
+ pthread_attr_getstackaddr
+ pthread_attr_getstacksize
+ pthread_attr_setdetachstate
+ pthread_attr_setstackaddr
+ pthread_attr_setstacksize
+
+ pthread_create
+ pthread_detach
+ pthread_equal
+ pthread_exit
+ pthread_join
+ pthread_once
+ pthread_self
+
+ pthread_cancel
+ pthread_cleanup_pop
+ pthread_cleanup_push
+ pthread_setcancelstate
+ pthread_setcanceltype
+ pthread_testcancel
+
+ ---------------------------
+ Thread Specific Data
+ ---------------------------
+ pthread_key_create
+ pthread_key_delete
+ pthread_setspecific
+ pthread_getspecific
+
+ ---------------------------
+ Mutexes
+ ---------------------------
+ pthread_mutexattr_init
+ pthread_mutexattr_destroy
+ pthread_mutexattr_getpshared
+ pthread_mutexattr_setpshared
+ pthread_mutexattr_gettype
+ pthread_mutexattr_settype (types: PTHREAD_MUTEX_DEFAULT
+ PTHREAD_MUTEX_NORMAL
+ PTHREAD_MUTEX_ERRORCHECK
+ PTHREAD_MUTEX_RECURSIVE )
+ pthread_mutex_init
+ pthread_mutex_destroy
+ pthread_mutex_lock
+ pthread_mutex_trylock
+ pthread_mutex_timedlock
+ pthread_mutex_unlock
+
+ ---------------------------
+ Condition Variables
+ ---------------------------
+ pthread_condattr_init
+ pthread_condattr_destroy
+ pthread_condattr_getpshared
+ pthread_condattr_setpshared
+
+ pthread_cond_init
+ pthread_cond_destroy
+ pthread_cond_wait
+ pthread_cond_timedwait
+ pthread_cond_signal
+ pthread_cond_broadcast
+
+ ---------------------------
+ Read/Write Locks - POSIX 1j
+ ---------------------------
+ pthread_rwlock_init
+ pthread_rwlock_destroy
+ pthread_rwlock_tryrdlock
+ pthread_rwlock_trywrlock
+ pthread_rwlock_rdlock
+ pthread_rwlock_timedrdlock
+ pthread_rwlock_rwlock
+ pthread_rwlock_timedwrlock
+ pthread_rwlock_unlock
+ pthread_rwlockattr_init
+ pthread_rwlockattr_destroy
+ pthread_rwlockattr_getpshared
+ pthread_rwlockattr_setpshared
+
+ ---------------------------
+ Spin Locks - POSIX 1j
+ ---------------------------
+ pthread_spin_init
+ pthread_spin_destroy
+ pthread_spin_lock
+ pthread_spin_unlock
+ pthread_spin_trylock
+
+ ---------------------------
+ Barriers - POSIX 1j
+ ---------------------------
+ pthread_barrier_init
+ pthread_barrier_destroy
+ pthread_barrier_wait
+ pthread_barrierattr_init
+ pthread_barrierattr_destroy
+ pthread_barrierattr_getpshared
+ pthread_barrierattr_setpshared
+
+ ---------------------------
+ Semaphores - POSIX 1b
+ ---------------------------
+ sem_init
+ sem_destroy
+ sem_post
+ sem_wait
+ sem_trywait
+ sem_timedwait
+ sem_open (returns an error ENOSYS)
+ sem_close (returns an error ENOSYS)
+ sem_unlink (returns an error ENOSYS)
+ sem_getvalue (returns an error ENOSYS)
+
+ ---------------------------
+ RealTime Scheduling
+ ---------------------------
+ pthread_attr_getschedparam
+ pthread_attr_setschedparam
+ pthread_attr_getinheritsched
+ pthread_attr_setinheritsched
+ pthread_attr_getschedpolicy (only supports SCHED_OTHER)
+ pthread_attr_setschedpolicy (only supports SCHED_OTHER)
+ pthread_getschedparam
+ pthread_setschedparam
+ pthread_getconcurrency
+ pthread_setconcurrency
+ pthread_attr_getscope
+ pthread_attr_setscope (only supports PTHREAD_SCOPE_SYSTEM)
+ sched_get_priority_max (POSIX 1b)
+ sched_get_priority_min (POSIX 1b)
+ sched_rr_get_interval (POSIX 1b - returns an error ENOTSUP)
+ sched_setscheduler (POSIX 1b - only supports SCHED_OTHER)
+ sched_getscheduler (POSIX 1b - only supports SCHED_OTHER)
+ sched_yield (POSIX 1b)
+
+ ---------------------------
+ Signals
+ ---------------------------
+ pthread_sigmask
+
+ ---------------------------
+ Non-portable routines (see the README.NONPORTABLE file for usage)
+ ---------------------------
+ pthread_getw32threadhandle_np
+ pthread_timechange_handler_np
+ pthread_delay_np
+ pthread_mutexattr_getkind_np
+ pthread_mutexattr_setkind_np (types: PTHREAD_MUTEX_FAST_NP,
+ PTHREAD_MUTEX_ERRORCHECK_NP,
+ PTHREAD_MUTEX_RECURSIVE_NP,
+ PTHREAD_MUTEX_ADAPTIVE_NP,
+ PTHREAD_MUTEX_TIMED_NP)
+ pthread_num_processors_np
+ pthread_win32_process_attach_np (Required when statically linking the library)
+ pthread_win32_process_detach_np (Required when statically linking the library)
+ pthread_win32_thread_attach_np (Required when statically linking the library)
+ pthread_win32_thread_detach_np (Required when statically linking the library)
+
+ ---------------------------
+ Static Initializers
+ ---------------------------
+ PTHREAD_ONCE_INIT
+ PTHREAD_MUTEX_INITIALIZER
+ PTHREAD_COND_INITIALIZER
+ PTHREAD_RWLOCK_INITIALIZER
+ PTHREAD_SPINLOCK_INITIALIZER
+
+ ---------------------------
+ Thread-Safe C Runtime Library (macros)
+ ---------------------------
+ strtok_r
+ asctime_r
+ ctime_r
+ gmtime_r
+ localtime_r
+ rand_r
+
+
+The following functions are not implemented:
+
+ ---------------------------
+ RealTime Scheduling
+ ---------------------------
+ pthread_mutex_getprioceiling
+ pthread_mutex_setprioceiling
+ pthread_mutex_attr_getprioceiling
+ pthread_mutex_attr_getprotocol
+ pthread_mutex_attr_setprioceiling
+ pthread_mutex_attr_setprotocol
+
+ ---------------------------
+ Fork Handlers
+ ---------------------------
+ pthread_atfork
+
+ ---------------------------
+ Stdio
+ ---------------------------
+ flockfile
+ ftrylockfile
+ funlockfile
+ getc_unlocked
+ getchar_unlocked
+ putc_unlocked
+ putchar_unlocked
+
+ ---------------------------
+ Thread-Safe C Runtime Library
+ ---------------------------
+ readdir_r
+ getgrgid_r
+ getgrnam_r
+ getpwuid_r
+ getpwnam_r
+
+ ---------------------------
+ Signals
+ ---------------------------
+ pthread_kill
+ sigtimedwait
+ sigwait
+ sigwaitinfo
+
+
+The library includes two non-API functions for creating cancellation
+points in applications and libraries:
+
+ pthreadCancelableWait
+ pthreadCancelableTimedWait
+
+
+Availability
+------------
+
+The prebuilt DLL, export libs (for both MSVC and Mingw32), and the header
+files (pthread.h, semaphore.h, sched.h) are available along with the
+complete source code.
+
+The source code can be found at:
+
+ ftp://sources.redhat.com/pub/pthreads-win32
+
+and as individual source code files at
+
+ ftp://sources.redhat.com/pub/pthreads-win32/source
+
+The pre-built DLL, export libraries and include files can be found at:
+
+ ftp://sources.redhat.com/pub/pthreads-win32/dll-latest
+
+
+
+Mailing List
+------------
+
+There is a mailing list for discussing pthreads on Win32. To join,
+send email to:
+
+ pthreads-win32-subscribe@sourceware.cygnus.com
+
+
+Application Development Environments
+------------------------------------
+
+See the README file for more information.
+
+MSVC:
+MSVC using SEH works. Distribute pthreadVSE.dll with your application.
+MSVC using C++ EH works. Distribute pthreadVCE.dll with your application.
+MSVC using C setjmp/longjmp works. Distribute pthreadVC.dll with your application.
+
+
+Mingw32:
+See FAQ Questions 6 and 10.
+
+Mingw using C++ EH works. Distribute pthreadGCE.dll with your application.
+Mingw using C setjmp/longjmp works. Distribute pthreadGC.dll with your application.
+
+
+Cygwin: (http://sourceware.cygnus.com/cygwin/)
+Developers using Cygwin will not need pthreads-win32 since it has POSIX threads
+support. Refer to its documentation for details and extent.
+
+
+UWIN:
+UWIN is a complete Unix-like environment for Windows from AT&T. Pthreads-win32
+doesn't currently support UWIN (and vice versa), but that may change in the
+future.
+
+Generally:
+For convenience, the following pre-built files are available on the FTP site
+(see Availability above):
+
+ pthread.h - for POSIX 1c threads
+ semaphore.h - for POSIX 1b semaphores
+ sched.h - for POSIX 1b scheduling
+ pthreadVCE.dll - built with MSVC++ compiler using C++ EH
+ pthreadVCE.lib
+ pthreadVC.dll - built with MSVC compiler using C setjmp/longjmp
+ pthreadVC.lib
+ pthreadVSE.dll - built with MSVC compiler using SEH
+ pthreadVSE.lib
+ pthreadGCE.dll - built with Mingw32 G++ 2.95.2-1
+ pthreadGC.dll - built with Mingw32 GCC 2.95.2-1 using setjmp/longjmp
+ libpthreadGCE.a - derived from pthreadGCE.dll
+ libpthreadGC.a - derived from pthreadGC.dll
+ gcc.dll - needed if distributing applications that use pthreadGCE.dll
+
+These are the only files you need in order to build POSIX threads
+applications for Win32 using either MSVC or Mingw32.
+
+See the FAQ file in the source tree for additional information.
+
+
+Documentation
+-------------
+
+Currently, there is no documentation included in the package apart
+from the copious comments in the source code.
+
+For POSIX Thread API programming, several reference books are
+available:
+
+ Programming with POSIX Threads
+ David R. Butenhof
+ Addison-Wesley (pub)
+
+ Pthreads Programming
+ By Bradford Nichols, Dick Buttlar & Jacqueline Proulx Farrell
+ O'Reilly (pub)
+
+On the web: see the links at the bottom of the pthreads-win32 site:
+
+ http://sources.redhat.com/pthreads-win32/
+
+
+Acknowledgements
+----------------
+
+This library is based substantially on a Win32 pthreads
+implementation contributed by John Bossom <John.Bossom@cognos.com>.
+
+The implementation of Condition Variables uses algorithms developed
+by Alexander Terekhov and Louis Thomas.
+
+The implementation of POSIX mutexes has been improved by Thomas Pfaff.
+
+The implementation of read/write locks was contributed by
+Aurelio Medina and improved by Alexander Terekhov.
+
+Many others have contributed significant time and effort to solve critical
+problems in order to make the library workable, robust and reliable.
+
+There is also a separate CONTRIBUTORS file. This file and others are
+on the web site:
+
+ http://sources.redhat.com/pthreads-win32
+
+As much as possible, the ChangeLog file acknowledges contributions to the
+code base in more detail.
+
+Enjoy!
+
+Ross Johnson
@@ -1,3817 +1,3834 @@ -2002-02-20 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * pthread_cond_destroy.c (pthread_cond_destroy): - Enter the time change critical section earlier. - -2002-02-17 Ross Johnson <rpj@setup1.ise.canberra.edu.au - - * Testsuite passed. - - * pthread_timechange_handler_np.c: New; following - a suggestion from Alexander Terekhov that CVs should - be broadcast so that they all re-evaluate their - condition variables and reset a new timeout if - required, whenever an application receives a - WM_TIMECHANGE message. This message indicates that - the system time has been changed. Therefore, CVs - waiting for a timeout set as an abs_time will possibly - not wake up at the expected time. Some applications - may not be tolerant of this. - * pthread_cond_init.c: Add CV to linked list. - * pthread_cond_destroy.c: Remove CV from linked list. - * global.c (ptw32_cond_list_head): New variable. - (ptw32_cond_list_tail): New variable. - (ptw32_cond_list_cs): New critical section. - * ptw32_processInitialize (ptw32_cond_list_cs): Initialize. - * ptw32_processTerminate (ptw32_cond_list_cs): Delete. - - - * Reduce executable size. - ----------------------- - When linking with the static library, only those - routines actually called, either directly or indirectly - should be included. - - [Gcc has the -ffunction-segments option to do this but MSVC - doesn't have this feature as far as I can determine. Other - compilers are undetermined as well. - rpj] - - * spin.c: Split file into function segments. - * ptw32_spinlock_check_need_init.c: Separated routine from spin.c. - * pthread_spin_init.c: Likewise. - * pthread_spin_destroy.c: Likewise. - * pthread_spin_lock.c: Likewise. - * pthread_spin_unlock.c: Likewise. - * pthread_spin_trylock.c: Likewise. - - * sync.c: Split file into function segments. - * pthread_detach.c: Separated routine from sync.c. - * pthread_join.c: Likewise. - - * tsd.c: Split file into function segments. - * pthread_key_create.c: Separated routine from tsd.c. - * pthread_key_delete.c: Likewise. - * pthread_setspecific.c: Likewise. - * pthread_getspecific.c: Likewise. - - * sched.c: Split file into function segments. - * pthread_attr_setschedpolicy.c: Separated routine from sched.c. - * pthread_attr_getschedpolicy.c: Likewise. - * pthread_attr_setschedparam.c: Likewise. - * pthread_attr_getschedparam.c: Likewise. - * pthread_attr_setinheritsched.c: Likewise. - * pthread_attr_getinheritsched.c: Likewise. - * pthread_setschedparam.c: Likewise. - * pthread_getschedparam.c: Likewise. - * sched_get_priority_max.c: Likewise. - * sched_get_priority_min.c: Likewise. - * sched_setscheduler.c: Likewise. - * sched_getscheduler.c: Likewise. - * sched_yield.c: Likewise. - - -2002-02-16 Ross Johnson <rpj@setup1.ise.canberra.edu.au - - Reduce executable size. - ----------------------- - When linking with the static library, only those - routines actually called, either directly or indirectly - should be included. - - [Gcc has the -ffunction-segments option to do this but MSVC - doesn't have this feature as far as I can determine. Other - compilers are undetermined as well. - rpj] - - * mutex.c: Split file into function segments. - * pthread_mutexattr_destroy.c: Separated routine from mutex.c - * pthread_mutexattr_getpshared.c: Likewise. - * pthread_mutexattr_gettype.c: Likewise. - * pthread_mutexattr_init.c: Likewise. - * pthread_mutexattr_setpshared.c: Likewise. - * pthread_mutexattr_settype.c: Likewise. - * ptw32_mutex_check_need_init.c: Likewise. - * pthread_mutex_destroy.c: Likewise. - * pthread_mutex_init.c: Likewise. - * pthread_mutex_lock.c: Likewise. - * pthread_mutex_timedlock.c: Likewise. - * pthread_mutex_trylock.c: Likewise. - * pthread_mutex_unlock.c: Likewise. - - * private.c: Split file into function segments. - * ptw32_InterlockedCompareExchange.c: Separated routine from private.c - * ptw32_callUserDestroyRoutines.c: Likewise. - * ptw32_getprocessors.c: Likewise. - * ptw32_processInitialize.c: Likewise. - * ptw32_processTerminate.c: Likewise. - * ptw32_threadDestroy.c: Likewise. - * ptw32_threadStart.c: Likewise. - * ptw32_throw.c: Likewise. - * ptw32_timespec.c: Likewise. - * ptw32_tkAssocCreate.c: Likewise. - * ptw32_tkAssocDestroy.c: Likewise. - - * rwlock.c: Split file into function segments. - * pthread_rwlockattr_destroy.c: Separated routine from rwlock.c - * pthread_rwlockattr_getpshared.c: Likewise. - * pthread_rwlockattr_init.c: Likewise. - * pthread_rwlockattr_setpshared.c: Likewise. - * ptw32_rwlock_check_need_init.c: Likewise. - * pthread_rwlock_destroy.c: Likewise. - * pthread_rwlock_init.c: Likewise. - * pthread_rwlock_rdlock.c: Likewise. - * pthread_rwlock_tryrdlock.c: Likewise. - * pthread_rwlock_trywrlock.c: Likewise. - * pthread_rwlock_unlock.c: Likewise. - * pthread_rwlock_wrlock.c: Likewise. - -2002-02-10 Ross Johnson <rpj@setup1.ise.canberra.edu.au - - Reduce executable size. - ----------------------- - When linking with the static library, only those - routines actually called, either directly or indirectly - should be included. - - [Gcc has the -ffunction-segments option to do this but MSVC - doesn't have this feature as far as I can determine. Other - compilers are undetermined as well. - rpj] - - * nonportable.c: Split file into function segments. - * np_delay.c: Separated routine from nonportable.c - * np_getw32threadhandle.c: Likewise. - * np_mutexattr_setkind.c: Likewise. - * np_mutexattr_getkind.c: Likewise. - * np_num_processors.c: Likewise. - * np_win32_attach_detach.c: Likewise. - - * misc.c: Split file into function segments. - * pthread_equal.c: Separated routine from nonportable.c. - * pthread_getconcurrency.c: Likewise. - * pthread_once.c: Likewise. - * pthread_self.c: Likewise. - * pthread_setconcurrency.c: Likewise. - * ptw32_calloc.c: Likewise. - * ptw32_new.c: Likewise. - * w32_CancelableWait.c: Likewise. - -2002-02-09 Ross Johnson <rpj@setup1.ise.canberra.edu.au - - Reduce executable size. - ----------------------- - When linking with the static library, only those - routines actually called, either directly or indirectly - should be included. - - [Gcc has the -ffunction-segments option to do this but MSVC - doesn't have this feature as far as I can determine. Other - compilers are undetermined as well. - rpj] - - * condvar.c: Split file into function segments. - * pthread_condattr_destroy.c: Separated routine from condvar.c. - * pthread_condattr_getpshared.c: Likewise. - * pthread_condattr_init.c: Likewise. - * pthread_condattr_setpshared.c: Likewise. - * ptw32_cond_check_need_init.c: Likewise. - * pthread_cond_destroy.c: Likewise. - * pthread_cond_init.c: Likewise. - * pthread_cond_signal.c: Likewise. - * pthread_cond_wait.c: Likewise. - -2002-02-07 Alexander Terekhov<TEREKHOV@de.ibm.com> - - * nonportable.c (pthread_delay_np): Make a true - cancelation point. Deferred cancels will interrupt the - wait. - -2002-02-07 Ross Johnson <rpj@setup1.ise.canberra.edu.au - - * misc.c (ptw32_new): Add creation of cancelEvent so that - implicit POSIX threads (Win32 threads with a POSIX face) - are cancelable; mainly so that pthread_delay_np doesn't fail - if called from the main thread. - * create.c (pthread_create): Remove creation of cancelEvent - from here; now in ptw32_new(). - - Reduce executable size. - ----------------------- - When linking with the static library, only those - routines actually called, either directly or indirectly - should be included. - - [Gcc has the -ffunction-segments option to do this but MSVC - doesn't have this feature as far as I can determine. Other - compilers are undetermined as well. - rpj] - - * barrier.c: All routines are now in separate compilation units; - This file is used to congregate the separate modules for - potential inline optimisation and backward build compatibility. - * cancel.c: Likewise. - * pthread_barrierattr_destroy.c: Separated routine from cancel.c. - * pthread_barrierattr_getpshared.c: Likewise. - * pthread_barrierattr_init.c: Likewise. - * pthread_barrierattr_setpshared.c: Likewise. - * pthread_barrier_destroy.c: Likewise. - * pthread_barrier_init.c: Likewise. - * pthread_barrier_wait.c: Likewise. - * pthread_cancel.c: Likewise. - * pthread_setcancelstate.c: Likewise. - * pthread_setcanceltype.c: Likewise. - * pthread_testcancel.c: Likewise. - -2002-02-04 Max Woodbury <mtew@cds.duke.edu> - - Reduced name space pollution. - ----------------------------- - When the appropriate symbols are defined, the headers - will restrict the definitions of new names. In particular, - it must be possible to NOT include the <windows.h> - header and related definitions with some combination - of symbol definitions. Secondly, it should be possible - that additional definitions should be limited to POSIX - compliant symbols by the definition of appropriate symbols. - - * pthread.h: POSIX conditionals. - * sched.h: POSIX conditionals. - * semaphore.h: POSIX conditionals. - - * semaphore.c: Included <limits.h>. - (sem_init): Changed magic 0x7FFFFFFFL to INT_MAX. - (sem_getvalue): Trial version. - - Reduce executable size. - ----------------------- - When linking with the static library, only those - routines actually called, either directly or indirectly - should be included. - - [Gcc has the -ffunction-segments option to do this but MSVC - doesn't have this feature as far as I can determine. Other - compilers are undetermined as well. - rpj] - - * semaphore.c: All routines are now in separate compilation units; - This file is used to congregate the separate modules for - potential inline optimisation and backward build compatibility. - * sem_close.c: Separated routine from semaphore.c. - * ptw32_decrease_semaphore.c: Likewise. - * sem_destroy.c: Likewise. - * sem_getvalue.c: Likewise. - * ptw32_increase_semaphore.c: Likewise. - * sem_init.c: Likewise. - * sem_open.c: Likewise. - * sem_post.c: Likewise. - * sem_post_multiple.c: Likewise. - * sem_timedwait.c: Likewise. - * sem_trywait.c: Likewise. - * sem_unlink.c: Likewise. - * sem_wait.c: Likewise. - -2002-02-04 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - The following extends the idea above to the rest of pthreads-win32 - rpj - - * attr.c: All routines are now in separate compilation units; - This file is used to congregate the separate modules for - potential inline optimisation and backward build compatibility. - * pthread_attr_destroy.c: Separated routine from attr.c. - * pthread_attr_getdetachstate.c: Likewise. - * pthread_attr_getscope.c: Likewise. - * pthread_attr_getstackaddr.c: Likewise. - * pthread_attr_getstacksize.c: Likewise. - * pthread_attr_init.c: Likewise. - * pthread_attr_is_attr.c: Likewise. - * pthread_attr_setdetachstate.c: Likewise. - * pthread_attr_setscope.c: Likewise. - * pthread_attr_setstackaddr.c: Likewise. - * pthread_attr_setstacksize.c: Likewise. - - * pthread.c: Agregation of agregate modules for super-inlineability. - -2002-02-02 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * cancel.c: Rearranged some code and introduced checks - to disable cancelation at the start of a thread's cancelation - run to prevent double cancelation. The main problem - arises if a thread is canceling and then receives a subsequent - async cancel request. - * private.c: Likewise. - * condvar.c: Place pragmas around cleanup_push/pop to turn - off inline optimisation (/Obn where n>0 - MSVC only). Various - optimisation switches in MSVC turn this on, which interferes with - the way that cleanup handlers are run in C++ EH and SEH - code. Application code compiled with inline optimisation must - also wrap cleanup_push/pop blocks with the pragmas, e.g. - #pragma inline_depth(0) - pthread_cleanup_push(...) - ... - pthread_cleanup_pop(...) - #pragma inline_depth(8) - * rwlock.c: Likewise. - * mutex.c: Remove attempts to inline some functions. - * signal.c: Modify misleading comment. - -2002-02-01 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * semaphore.c (sem_trywait): Fix missing errno return - for systems that define NEED_SEM (e.g. early WinCE). - * mutex.c (pthread_mutex_timedlock): Return ENOTSUP - for systems that define NEED_SEM since they don't - have sem_trywait(). - -2002-01-27 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * mutex.c (pthread_mutex_timedlock): New function suggested by - Alexander Terekhov. The logic required to implement this - properly came from Alexander, with some collaboration - with Thomas Pfaff. - (pthread_mutex_unlock): Wrap the waiters check and sema - post in a critical section to prevent a race with - pthread_mutex_timedlock. - (ptw32_timed_semwait): New function; - returns a special result if the absolute timeout parameter - represents a time already passed when called; used by - pthread_mutex_timedwait(). Have deliberately not reused - the name "ptw32_sem_timedwait" because they are not the same - routine. - * condvar.c (ptw32_cond_timedwait): Use the new sem_timedwait() - instead of ptw32_sem_timedwait(), which now has a different - function. See previous. - * implement.h: Remove prototype for ptw32_sem_timedwait. - See next. - (pthread_mutex_t_): Add critical section element for access - to lock_idx during mutex post-timeout processing. - * semaphore.h (sem_timedwait): See next. - * semaphore.c (sem_timedwait): See next. - * private.c (ptw32_sem_timedwait): Move to semaphore.c - and rename as sem_timedwait(). - -2002-01-18 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * sync.c (pthread_join): Was getting the exit code from the - calling thread rather than the joined thread if - defined(__MINGW32__) && !defined(__MSVCRT__). - -2002-01-15 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * pthread.h: Unless the build explicitly defines __CLEANUP_SEH, - __CLEANUP_CXX, or __CLEANUP_C, then the build defaults to - __CLEANUP_C style cleanup. This style uses setjmp/longjmp - in the cancelation and thread exit implementations and therefore - won't do stack unwinding if linked to applications that have it - (e.g. C++ apps). This is currently consistent with most/all - commercial Unix POSIX threads implementations. - - * spin.c (pthread_spin_init): Edit renamed function call. - * nonportable.c (pthread_num_processors_np): New. - (pthread_getprocessors_np): Renamed to ptw32_getprocessors - and moved to private.c. - * private.c (pthread_getprocessors): Moved here from - nonportable.c. - * pthread.def (pthread_getprocessors_np): Removed - from export list. - - * rwlock.c (pthread_rwlockattr_init): New. - (pthread_rwlockattr_destroy): New. - (pthread_rwlockattr_getpshared): New. - (pthread_rwlockattr_setpshared): New. - -2002-01-14 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * attr.c (pthread_attr_setscope): Fix struct pointer - indirection error introduced 2002-01-04. - (pthread_attr_getscope): Likewise. - -2002-01-12 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * pthread.dsp (SOURCE): Add missing source files. - -2002-01-08 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * mutex.c (pthread_mutex_trylock): use - ptw32_interlocked_compare_exchange function pointer - rather than ptw32_InterlockedCompareExchange() directly - to retain portability to non-iX86 processors, - e.g. WinCE etc. The pointer will point to the native - OS version of InterlockedCompareExchange() if the - OS supports it (see ChangeLog entry of 2001-10-17). - -2002-01-07 Thomas Pfaff <tpfaff@gmx.net>, Alexander Terekhov <TEREKHOV@de.ibm.com> - - * mutex.c (pthread_mutex_init): Remove critical - section calls. - (pthread_mutex_destroy): Likewise. - (pthread_mutex_unlock): Likewise. - (pthread_mutex_trylock): Likewise; uses - ptw32_InterlockedCompareExchange() to avoid need for - critical section; library is no longer i386 compatible; - recursive mutexes now increment the lock count rather - than return EBUSY; errorcheck mutexes return EDEADLCK - rather than EBUSY. This behaviour is consistent with the - Solaris pthreads implementation. - * implement.h (pthread_mutex_t_): Remove critical - section element - no longer needed. - - -2002-01-04 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * attr.c (pthread_attr_setscope): Add more error - checking and actually store the scope value even - though it's not really necessary. - (pthread_attr_getscope): Return stored value. - * implement.h (pthread_attr_t_): Add new scope element. - * ANNOUNCE: Fix out of date comment next to - pthread_attr_setscope in conformance section. - -2001-12-21 Alexander Terekhov <TEREKHOV@de.ibm.com> - - * mutex.c (pthread_mutex_lock): Decrementing lock_idx was - not thread-safe. - (pthread_mutex_trylock): Likewise. - -2001-10-26 prionx@juno.com - - * semaphore.c (sem_init): Fix typo and missing bracket - in conditionally compiled code. Only older versions of - WinCE require this code, hence it doesn't normally get - tested; somehow when sem_t reverted to an opaque struct - the calloc NULL check was left in the conditionally included - section. - (sem_destroy): Likewise, the calloced sem_t wasn't being freed. - -2001-10-25 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * GNUmakefile (libwsock32): Add to linker flags for - WSAGetLastError() and WSASetLastError(). - * Makefile (wsock32.lib): Likewise. - * create.c: Minor mostly inert changes. - * implement.h (PTW32_MAX): Move into here and renamed - from sched.h. - (PTW32_MIN): Likewise. - * GNUmakefile (TEST_ICE): Define if testing internal - implementation of InterlockedCompareExchange. - * Makefile (TEST_ICE): Likewise. - * private.c (TEST_ICE): Likewise. - -2001-10-24 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * attr.c (pthread_attr_setstacksize): Quell warning - from LCC by conditionally compiling the stacksize - validity check. LCC correctly warns that the condition - (stacksize < PTHREAD_STACK_MIN) is suspicious - because STACK_MIN is 0 and stacksize is of type - size_t (or unsigned int). - -2001-10-17 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * barrier.c: Move _LONG and _LPLONG defines into - implement.h; rename to PTW32_INTERLOCKED_LONG and - PTW32_INTERLOCKED_LPLONG respectively. - * spin.c: Likewise; ptw32_interlocked_compare_exchange used - in place of InterlockedCompareExchange directly. - * global.c (ptw32_interlocked_compare_exchange): Add - prototype for this new routine pointer to be used when - InterlockedCompareExchange isn't supported by Windows. - * nonportable.c (pthread_win32_process_attach_np): Check for - support of InterlockedCompareExchange in kernel32 and assign its - address to ptw32_interlocked_compare_exchange if it exists, or - our own ix86 specific implementation ptw32_InterlockedCompareExchange. - *private.c (ptw32_InterlockedCompareExchange): An - implementation of InterlockedCompareExchange() which is - specific to ix86; written directly in assembler for either - MSVC or GNU C; needed because Windows 95 doesn't support - InterlockedCompareExchange(). - - * sched.c (sched_get_priority_min): Extend to return - THREAD_PRIORITY_IDLE. - (sched_get_priority_max): Extend to return - THREAD_PRIORITY_CRITICAL. - -2001-10-15 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * spin.c (pthread_spin_lock): PTHREAD_SPINLOCK_INITIALIZER - was causing a program fault. - (pthread_spin_init): Could have alloced memory - without freeing under some error conditions. - - * mutex.c (pthread_mutex_init): Move memory - allocation of mutex struct after checking for - PROCESS_SHARED. - -2001-10-12 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * spin.c (pthread_spin_unlock): Was not returning - EPERM if the spinlock was not locked, for multi CPU - machines. - -2001-10-08 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * spin.c (pthread_spin_trylock): Was not returning - EBUSY for multi CPU machines. - -2001-08-24 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * condvar.c (pthread_cond_destroy): Remove cv element - that is no longer used. - * implement.h: Likewise. - -2001-08-23 Alexander Terekhov <TEREKHOV@de.ibm.com> - - * condvar.c (pthread_cond_destroy): fix bug with - respect to deadlock in the case of concurrent - _destroy/_unblock; a condition variable can be destroyed - immediately after all the threads that are blocked on - it are awakened. - -2001-08-23 Phil Frisbie, Jr. <phil@hawksoft.com> - - * tsd.c (pthread_getspecific): Preserve the last - winsock error [from WSAGetLastError()]. - -2001-07-18 Scott McCaskill <scott@magruder.org> - - * mutex.c (pthread_mutexattr_init): Return ENOMEM - immediately and don't dereference the NULL pointer - if calloc fails. - (pthread_mutexattr_getpshared): Don't dereference - a pointer that is possibly NULL. - * barrier.c (pthread_barrierattr_init): Likewise - (pthread_barrierattr_getpshared): Don't dereference - a pointer that is possibly NULL. - * condvar.c (pthread_condattr_getpshared): Don't dereference - a pointer that is possibly NULL. - -2001-07-15 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * rwlock.c (pthread_rwlock_wrlock): Is allowed to be - a cancelation point; re-enable deferred cancelability - around the CV call. - -2001-07-10 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * barrier.c: Still more revamping. The exclusive access - mutex isn't really needed so it has been removed and replaced - by an InterlockedDecrement(). nSerial has been removed. - iStep is now dual-purpose. The process shared attribute - is now stored in the barrier struct. - * implement.h (pthread_barrier_t_): Lost some/gained one - elements. - * private.c (ptw32_threadStart): Removed some comments. - -2001-07-10 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * barrier.c: Revamped to fix the race condition. Two alternating - semaphores are used instead of the PulseEvent. Also improved - overall throughput by returning PTHREAD_BARRIER_SERIAL_THREAD - to the first waking thread. - * implement.h (pthread_barrier_t_): Revamped. - -2001-07-09 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * barrier.c: Fix several bugs in all routines. Now passes - tests/barrier5.c which is fairly rigorous. There is still - a non-optimal work-around for a race condition between - the barrier breeched event signal and event wait. Basically - the last (signalling) thread to hit the barrier yields - to allow any other threads, which may have lost the race, - to complete. - -2001-07-07 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * barrier.c: Changed synchronisation mechanism to a - Win32 manual reset Event and use PulseEvent to signal - waiting threads. If the implementation continued to use - a semaphore it would require a second semaphore and - some management to use them alternately as barriers. A - single semaphore allows threads to cascade from one barrier - through the next, leaving some threads blocked at the first. - * implement.h (pthread_barrier_t_): As per above. - * general: Made a number of other routines inlinable. - -2001-07-07 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * spin.c: Revamped and working; included static initialiser. - Now beta level. - * barrier.c: Likewise. - * condvar.c: Macro constant change; inline auto init routine. - * mutex.c: Likewise. - * rwlock.c: Likewise. - * private.c: Add support for spinlock initialiser. - * global.c: Likewise. - * implement.h: Likewise. - * pthread.h (PTHREAD_SPINLOCK_INITIALIZER): Fix typo. - -2001-07-05 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * barrier.c: Remove static initialisation - irrelevent - for this object. - * pthread.h (PTHREAD_BARRIER_INITIALIZER): Removed. - * rwlock.c (pthread_rwlock_wrlock): This routine is - not a cancelation point - disable deferred - cancelation around call to pthread_cond_wait(). - -2001-07-05 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * spin.c: New module implementing spin locks. - * barrier.c: New module implementing barriers. - * pthread.h (_POSIX_SPIN_LOCKS): defined. - (_POSIX_BARRIERS): Defined. - (pthread_spin_*): Defined. - (pthread_barrier*): Defined. - (PTHREAD_BARRIER_SERIAL_THREAD): Defined. - * implement.h (pthread_spinlock_t_): Defined. - (pthread_barrier_t_): Defined. - (pthread_barrierattr_t_): Defined. - - * mutex.c (pthread_mutex_lock): Return with the error - if an auto-initialiser initialisation fails. - - * nonportable.c (pthread_getprocessors_np): New; gets the - number of available processors for the current process. - -2001-07-03 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * pthread.h (_POSIX_READER_WRITER_LOCKS): Define it - if not already defined. - -2001-07-01 Alexander Terekhov <TEREKHOV@de.ibm.com> - - * condvar.c: Fixed lost signal bug reported by Timur Aydin - (taydin@snet.net). - [RPJ (me) didn't translate the original algorithm - correctly.] - * semaphore.c: Added sem_post_multiple; this is a useful - routine, but it doesn't appear to be standard. For now it's - not an exported function. - -2001-06-25 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * create.c (pthread_create): Add priority inheritance - attributes. - * mutex.c (pthread_mutex_lock): Remove some overhead for - PTHREAD_MUTEX_NORMAL mutex types. Specifically, avoid - calling pthread_self() and pthread_equal() to check/set - the mutex owner. Introduce a new pseudo owner for this - type. Test results suggest increases in speed of up to - 90% for non-blocking locks. - This is the default type of mutex used internally by other - synchronising objects, ie. condition variables and - read-write locks. The test rwlock7.c shows about a - 30-35% speed increase over snapshot 2001-06-06. The - price of this is that the application developer - must ensure correct behaviour, or explicitly set the - mutex to a safer type such as PTHREAD_MUTEX_ERRORCHECK. - For example, PTHREAD_MUTEX_NORMAL (or PTHREAD_MUTEX_DEFAULT) - type mutexes will not return an error if a thread which is not - the owner calls pthread_mutex_unlock. The call will succeed - in unlocking the mutex if it is currently locked, but a - subsequent unlock by the true owner will then fail with EPERM. - This is however consistent with some other implementations. - (pthread_mutex_unlock): Likewise. - (pthread_mutex_trylock): Likewise. - (pthread_mutex_destroy): Likewise. - * attr.c (pthread_attr_init): PTHREAD_EXPLICIT_SCHED is the - default inheritance attribute; THREAD_PRIORITY_NORMAL is - the default priority for new threads. - * sched.c (pthread_attr_setschedpolicy): Added routine. - (pthread_attr_getschedpolicy): Added routine. - (pthread_attr_setinheritsched): Added routine. - (pthread_attr_getinheritsched): Added routine. - * pthread.h (sched_rr_set_interval): Added as a macro; - returns -1 with errno set to ENOSYS. - -2001-06-23 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - *sched.c (pthread_attr_setschedparam): Add priority range - check. - (sched_setscheduler): New function; checks for a valid - pid and policy; checks for permission to set information - in the target process; expects pid to be a Win32 process ID, - not a process handle; the only scheduler policy allowed is - SCHED_OTHER. - (sched_getscheduler): Likewise, but checks for permission - to query. - * pthread.h (SCHED_*): Moved to sched.h as defined in the - POSIX standard. - * sched.h (SCHED_*): Moved from pthread.h. - (pid_t): Defined if necessary. - (sched_setscheduler): Defined. - (sched_getscheduler): Defined. - * pthread.def (sched_setscheduler): Exported. - (sched_getscheduler): Likewise. - -2001-06-23 Ralf Brese <Ralf.Brese@pdb4.siemens.de> - - * create.c (pthread_create): Set thread priority from - thread attributes. - -2001-06-18 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * Made organisational-only changes to UWIN additions. - * dll.c (dllMain): Moved UWIN process attach code - to pthread_win32_process_attach_np(); moved - instance of pthread_count to global.c. - * global.c (pthread_count): Moved from dll.c. - * nonportable.c (pthread_win32_process_attach_np): - Moved _UWIN code to here from dll.c. - * implement.h (pthread_count): Define extern int. - * create.c (pthread_count): Remove extern int. - * private.c (pthread_count): Likewise. - * exit.c (pthread_count): Likewise. - -2001-06-18 David Korn <dgk@research.att.com> - - * dll.c: Added changes necessary to work with UWIN. - * create.c: Likewise. - * pthread.h: Likewise. - * misc.c: Likewise. - * exit.c: Likewise. - * private.c: Likewise. - * implement.h: Likewise. - There is some room at the start of struct pthread_t_ - to implement the signal semantics in UWIN's posix.dll - although this is not yet complete. - * Nmakefile: Compatible with UWIN's Nmake utility. - * Nmakefile.tests: Likewise - for running the tests. - -2001-06-08 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * semaphore.h (sem_t): Fixed for compile and test. - * implement.h (sem_t_): Likewise. - * semaphore.c: Likewise. - * private.c (ptw32_sem_timedwait): Updated to use new - opaque sem_t. - -2001-06-06 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * semaphore.h (sem_t): Is now an opaque pointer; - moved actual definition to implement.h. - * implement.h (sem_t_): Move here from semaphore.h; - was the definition of sem_t. - * semaphore.c: Wherever necessary, changed use of sem - from that of a pointer to a pointer-pointer; added - extra checks for a valid sem_t; NULL sem_t when - it is destroyed; added extra checks when creating - and destroying sem_t elements in the NEED_SEM - code branches; changed from using a pthread_mutex_t - ((*sem)->mutex) to CRITICAL_SECTION ((*sem)->sem_lock_cs) - in NEED_SEM branches for access serialisation. - -2001-06-06 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * mutex.c (pthread_mutexattr_init): Remove - ptw32_mutex_default_kind. - -2001-06-05 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * nonportable.c (pthread_mutex_setdefaultkind_np): - Remove - should not have been included in the first place. - (pthread_mutex_getdefaultkind_np): Likewise. - * global.c (ptw32_mutex_default_kind): Likewise. - * mutex.c (pthread_mutex_init): Remove use of - ptw32_mutex_default_kind. - * pthread.h (pthread_mutex_setdefaultkind_np): Likewise. - (pthread_mutex_getdefaultkind_np): Likewise. - * pthread.def (pthread_mutexattr_setkind_np): Added. - (pthread_mutexattr_getkind_np): Likewise. - - * README: Many changes that should have gone in before - the last snapshot. - * README.NONPORTABLE: New - referred to by ANNOUNCE - but never created; documents the non-portable routines - included in the library - moved from README with new - routines added. - * ANNOUNCE (pthread_mutexattr_setkind_np): Added to - compliance list. - (pthread_mutexattr_getkind_np): Likewise. - -2001-06-04 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * condvar.c: Add original description of the algorithm as - developed by Terekhov and Thomas, plus reference to - README.CV. - -2001-06-03 Alexander Terekhov <TEREKHOV@de.ibm.com>, Louis Thomas <lthomas@arbitrade.com> - - * condvar.c (pthread_cond_init): Completely revamped. - (pthread_cond_destroy): Likewise. - (ptw32_cond_wait_cleanup): Likewise. - (ptw32_cond_timedwait): Likewise. - (ptw32_cond_unblock): New general signaling routine. - (pthread_cond_signal): Now calls ptw32_cond_unblock. - (pthread_cond_broadcast): Likewise. - * implement.h (pthread_cond_t_): Revamped. - * README.CV: New; explanation of the above changes. - -2001-05-30 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * pthread.h (rand_r): Fake using _seed argument to quell - compiler warning (compiler should optimise this away later). - - * GNUmakefile (OPT): Leave symbolic information out of the library - and increase optimisation level - for smaller faster prebuilt - dlls. - -2001-05-29 Milan Gardian <Milan.Gardian@LEIBINGER.com> - - * Makefile: fix typo. - * pthreads.h: Fix problems with stdcall/cdecl conventions, in particular - remove the need for PT_STDCALL everywhere; remove warning supression. - * (errno): Fix the longstanding "inconsistent dll linkage" problem - with errno; now also works with /MD debugging libs - - warnings emerged when compiling pthreads library with /MD (or /MDd) - compiler switch, instead of /MT (or /MTd) (i.e. when compiling pthreads - using Multithreaded DLL CRT instead of Multithreaded statically linked - CRT). - * create.c (pthread_create): Likewise; fix typo. - * private.c (ptw32_threadStart): Eliminate use of terminate() which doesn't - throw exceptions. - * Remove unnecessary #includes from a number of modules - - [I had to #include malloc.h in implement.h for gcc - rpj]. - -2001-05-29 Thomas Pfaff <tpfaff@gmx.net> - - * pthread.h (PTHREAD_MUTEX_DEFAULT): New; equivalent to - PTHREAD_MUTEX_DEFAULT_NP. - * (PTHREAD_MUTEX_NORMAL): Similarly. - * (PTHREAD_MUTEX_ERRORCHECK): Similarly. - * (PTHREAD_MUTEX_RECURSIVE): Similarly. - * (pthread_mutex_setdefaultkind_np): New; Linux compatibility stub - for pthread_mutexattr_settype. - * (pthread_mutexattr_getkind_np): New; Linux compatibility stub - for pthread_mutexattr_gettype. - * mutex.c (pthread_mutexattr_settype): New; allow - the following types of mutex: - PTHREAD_MUTEX_DEFAULT_NP - PTHREAD_MUTEX_NORMAL_NP - PTHREAD_MUTEX_ERRORCHECK_NP - PTHREAD_MUTEX_RECURSIVE_NP - * Note that PTHREAD_MUTEX_DEFAULT is equivalent to - PTHREAD_MUTEX_NORMAL - ie. mutexes should no longer - be recursive by default, and a thread will deadlock if it - tries to relock a mutex it already owns. This is inline with - other pthreads implementations. - * (pthread_mutex_lock): Process the lock request - according to the mutex type. - * (pthread_mutex_init): Eliminate use of Win32 mutexes as the - basis of POSIX mutexes - instead, a combination of one critical section - and one semaphore are used in conjunction with Win32 Interlocked* routines. - * (pthread_mutex_destroy): Likewise. - * (pthread_mutex_lock): Likewise. - * (pthread_mutex_trylock): Likewise. - * (pthread_mutex_unlock): Likewise. - * Use longjmp/setjmp to implement cancelation when building the library - using a C compiler which doesn't support exceptions, e.g. gcc -x c (note - that gcc -x c++ uses exceptions). - * Also fixed some of the same typos and eliminated PT_STDCALL as - Milan Gardian's patches above. - -2001-02-07 Alexander Terekhov <TEREKHOV@de.ibm.com> - - * rwlock.c: Revamped. - * implement.h (pthread_rwlock_t_): Redefined. - This implementation does not have reader/writer starvation problem. - Rwlock attempts to behave more like a normal mutex with - races and scheduling policy determining who is more important; - It also supports recursive locking, - has less synchronization overhead (no broadcasts at all, - readers are not blocked on any condition variable) and seem to - be faster than the current implementation [W98 appears to be - approximately 15 percent faster at least - on top of speed increase - from Thomas Pfaff's changes to mutex.c - rpj]. - -2000-12-29 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * Makefile: Back-out "for" loops which don't work. - - * GNUmakefile: Remove the fake.a target; add the "realclean" - target; don't remove built libs under the "clean" target. - - * config.h: Add a guard against multiple inclusion. - - * semaphore.h: Add some defines from config.h to make - semaphore.h independent of config.h when building apps. - - * pthread.h (_errno): Back-out previous fix until we know how to - fix it properly. - - * implement.h (lockCount): Add missing element to pthread_mutex_t_. - - * sync.c (pthread_join): Spelling fix in comment. - - * private.c (ptw32_threadStart): Reset original termination - function (C++). - (ptw32_threadStart): Cleanup detached threads early in case - the library is statically linked. - (ptw32_callUserDestroyRoutines): Remove [SEH] __try block from - destructor call so that unhandled exceptions will be passed through - to the system; call terminate() from [C++] try block for the same - reason. - - * tsd.c (pthread_getspecific): Add comment. - - * mutex.c (pthread_mutex_init): Initialise new elements in - pthread_mutex_t. - (pthread_mutex_unlock): Invert "pthread_equal()" test. - -2000-12-28 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * semaphore.c (mode_t): Use ifndef HAVE_MODE_T to include definition. - - * config.h.in (HAVE_MODE_T): Added. - (_UWIN): Start adding defines for the UWIN package. - - * private.c (ptw32_threadStart): Unhandled exceptions are - now passed through to the system to deal with. This is consistent - with normal Windows behaviour. C++ applications may use - set_terminate() to override the default behaviour which is - to call ptw32_terminate(). Ptw32_terminate() cleans up some - POSIX thread stuff before calling the system default function - which calls abort(). The users termination function should conform - to standard C++ semantics which is to not return. It should - exit the thread (call pthread_exit()) or exit the application. - * private.c (ptw32_terminate): Added as the default set_terminate() - function. It calls the system default function after cleaning up - some POSIX thread stuff. - - * implement.h (ptw32_try_enter_critical_section): Move - declaration. - * global.c (ptw32_try_enter_critical_section): Moved - from dll.c. - * dll.c: Move process and thread attach/detach code into - functions in nonportable.c. - * nonportable.c (pthread_win32_process_attach_np): Process - attach code from dll.c is now available to static linked - applications. - * nonportable.c (pthread_win32_process_detach_np): Likewise. - * nonportable.c (pthread_win32_thread_attach_np): Likewise. - * nonportable.c (pthread_win32_thread_detach_np): Likewise. - - * pthread.h: Add new non-portable prototypes for static - linked applications. - - * GNUmakefile (OPT): Increase optimisation flag and remove - debug info flag. - - * pthread.def: Add new non-portable exports for static - linked applications. - -2000-12-11 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * FAQ: Update Answer 6 re getting a fully working - Mingw32 built library. - -2000-10-10 Steven Reddie <smr@essemer.com.au> - - * misc.c (pthread_self): Restore Win32 "last error" - cleared by TlsGetValue() call in - pthread_getspecific() - -2000-09-20 Arthur Kantor <akantor@bexusa.com> - - * mutex.c (pthread_mutex_lock): Record the owner - of the mutex. This requires also keeping count of - recursive locks ourselves rather than leaving it - to Win32 since we need to know when to NULL the - thread owner when the mutex is unlocked. - (pthread_mutex_trylock): Likewise. - (pthread_mutex_unlock): Check that the calling - thread owns the mutex, decrement the recursive - lock count, and NULL the owner if zero. Return - EPERM if the mutex is owned by another thread. - * implement.h (pthread_mutex_t_): Add ownerThread - and lockCount members. - -2000-09-13 Jef Gearhart <jgearhart@tpssys.com> - - * mutex.c (pthread_mutex_init): Call - TryEnterCriticalSection through the pointer - rather than directly so that the dll can load - on Windows versions that can't resolve the - function, eg. Windows 95 - -2000-09-09 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * pthread.h (ctime_r): Fix arg. - -2000-09-08 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * GNUmakefile(_WIN32_WINNT=0x400): Define in CFLAGS; - doesn't seem to be needed though. - - * cancel.c (pthread_cancel): Must get "self" through - calling pthread_self() which will ensure a POSIX thread - struct is built for non-POSIX threads; return an error - if this fails - - Ollie Leahy <ollie@mpt.ie> - (pthread_setcancelstate): Likewise. - (pthread_setcanceltype): Likewise. - * misc.c (ptw32_cancelable_wait): Likewise. - - * private.c (ptw32_tkAssocCreate): Remove unused #if 0 - wrapped code. - - * pthread.h (ptw32_get_exception_services_code): - Needed to be forward declared unconditionally. - -2000-09-06 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * cancel.c (pthread_cancel): If called from the main - thread "self" would be NULL; get "self" via pthread_self() - instead of directly from TLS so that an implicit - pthread object is created. - - * misc.c (pthread_equal): Strengthen test for NULLs. - -2000-09-02 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * condvar.c (ptw32_cond_wait_cleanup): Ensure that all - waking threads check if they are the last, and notify - the broadcaster if so - even if an error occurs in the - waiter. - - * semaphore.c (_decrease_semaphore): Should be - a call to ptw32_decrease_semaphore. - (_increase_semaphore): Should be a call to - ptw32_increase_semaphore. - - * misc.c (ptw32_cancelable_wait): Renamed from - CancelableWait. - * rwlock.c (_rwlock_check*): Renamed to - ptw32_rwlock_check*. - * mutex.c (_mutex_check*): Renamed to ptw32_mutex_check*. - * condvar.c (cond_timed*): Renamed to ptw32_cond_timed*. - (_cond_check*): Renamed to ptw32_cond_check*. - (cond_wait_cleanup*): Rename to ptw32_cond_wait_cleanup*. - (ptw32_cond_timedwait): Add comments. - -2000-08-22 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * private.c (ptw32_throw): Fix exception test; - move exceptionInformation declaration. - - * tsd.c (pthread_key_create): newkey wrongly declared. - - * pthread.h: Fix comment block. - -2000-08-18 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * mutex.c (pthread_mutex_destroy): Check that the mutex isn't - held; invalidate the mutex as early as possible to avoid - contention; not perfect - FIXME! - - * rwlock.c (pthread_rwlock_init): Remove redundant assignment - to "rw". - (pthread_rwlock_destroy): Invalidate the rwlock before - freeing up any of it's resources - to avoid contention. - - * private.c (ptw32_tkAssocCreate): Change assoc->lock - to use a dynamically initialised mutex - only consumes - a W32 mutex or critical section when first used, - not before. - - * mutex.c (pthread_mutex_init): Remove redundant assignment - to "mx". - (pthread_mutexattr_destroy): Set attribute to NULL - before freeing it's memory - to avoid contention. - - * implement.h (PTW32_EPS_CANCEL/PTW32_EPS_EXIT): - Must be defined for all compilers - used as generic - exception selectors by ptw32_throw(). - - * Several: Fix typos from scripted edit session - yesterday. - - * nonportable.c (pthread_mutexattr_setforcecs_np): - Moved this function from mutex.c. - (pthread_getw32threadhandle_np): New function to - return the win32 thread handle that the POSIX - thread is using. - * mutex.c (pthread_mutexattr_setforcecs_np): - Moved to new file "nonportable.c". - - * pthread.h (PTW32_BUILD): Only redefine __except - and catch compiler keywords if we aren't building - the library (ie. PTW32_BUILD is not defined) - - this is safer than defining and then undefining - if not building the library. - * implement.h: Remove __except and catch undefines. - * Makefile (CFLAGS): Define PTW32_BUILD. - * GNUmakefile (CFLAGS): Define PTW32_BUILD. - - * All appropriate: Change Pthread_exception* to - ptw32_exception* to be consistent with internal - identifier naming. - - * private.c (ptw32_throw): New function to provide - a generic exception throw for all internal - exceptions and EH schemes. - (ptw32_threadStart): pthread_exit() value is now - returned via the thread structure exitStatus - element. - * exit.c (pthread_exit): pthread_exit() value is now - returned via the thread structure exitStatus - element. - * cancel.c (ptw32_cancel_self): Now uses ptw32_throw. - (pthread_setcancelstate): Ditto. - (pthread_setcanceltype): Ditto. - (pthread_testcancel): Ditto. - (pthread_cancel): Ditto. - * misc.c (CancelableWait): Ditto. - * exit.c (pthread_exit): Ditto. - * All applicable: Change PTW32_ prefix to - PTW32_ prefix to remove leading underscores - from private library identifiers. - -2000-08-17 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * All applicable: Change _pthread_ prefix to - ptw32_ prefix to remove leading underscores - from private library identifiers (single - and double leading underscores are reserved in the - ANSI C standard for compiler implementations). - - * tsd.c (pthread_create_key): Initialise temporary - key before returning it's address to avoid race - conditions. - -2000-08-13 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * errno.c: Add _MD precompile condition; thus far - had no effect when using /MD compile option but I - thnk it should be there. - - * exit.c: Add __cplusplus to various #if lines; - was compiling SEH code even when VC++ had - C++ compile options. - - * private.c: ditto. - - * create.c (pthread_create): Add PT_STDCALL macro to - function pointer arg in _beginthread(). - - * pthread.h: PT_STDCALL really does need to be defined - in both this and impliment.h; don't set it to __cdecl - - this macro is only used to extend function pointer - casting for functions that will be passed as parameters. - (~PThreadCleanup): add cast and group expression. - (_errno): Add _MD compile conditional. - (PtW32NoCatchWarn): Change pragma message. - - * implement.h: Move and change PT_STDCALL define. - - * need_errno.h: Add _MD to compilation conditional. - - * GNUmakefile: Substantial rewrite for new naming - convention; set for nil optimisation (turn it up - when we have a working library build; add target - "fake.a" to build a libpthreadw32.a from the VC++ - built DLL pthreadVCE.dll. - - * pthread.def (LIBRARY): Don't specify in the .def - file - it is specified on the linker command line - since we now use the same .def file for variously - named .dlls. - - * Makefile: Substantial rewrite for new naming - convention; default nmake target only issues a - help message; run nmake with specific target - corresponding to the EH scheme being used. - - * README: Update information; add naming convention - explanation. - - * ANNOUNCE: Update information. - -2000-08-12 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * pthread.h: Add compile-time message when using - MSC_VER compiler and C++ EH to warn application - programmers to use PtW32Catch instead of catch(...) - if they want cancelation and pthread_exit to work. - - * implement.h: Remove #include <semaphore.h>; we - use our own local semaphore.h. - -2000-08-10 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * cleanup.c (pthread_pop_cleanup): Remove _pthread - prefix from __except and catch keywords; implement.h - now simply undefines ptw32__except and - ptw32_catch if defined; VC++ was not textually - substituting ptw32_catch etc back to catch as - it was redefined; the reason for using the prefixed - version was to make it clear that it was not using - the pthread.h redefined catch keyword. - - * private.c (ptw32_threadStart): Ditto. - (ptw32_callUserDestroyRoutines): Ditto. - - * implement.h (ptw32__except): Remove #define. - (ptw32_catch): Remove #define. - - * GNUmakefile (pthread.a): New target to build - libpthread32.a from pthread.dll using dlltool. - - * buildlib.bat: Duplicate cl commands with args to - build C++ EH version of pthread.dll; use of .bat - files is redundant now that nmake compatible - Makefile is included; used as a kludge only now. - - * Makefile: Localise some macros and fix up the clean: - target to extend it and work properly. - - * CONTRIBUTORS: Add contributors. - - * ANNOUNCE: Updated. - - * README: Updated. - -2000-08-06 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * pthread.h: Remove #warning - VC++ doesn't accept it. - -2000-08-05 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * pthread.h (PtW32CatchAll): Add macro. When compiling - applications using VC++ with C++ EH rather than SEH - 'PtW32CatchAll' must be used in place of any 'catch( ... )' - if the application wants pthread cancelation or - pthread_exit() to work. - -2000-08-03 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * pthread.h: Add a base class ptw32_exception for - library internal exceptions and change the "catch" - re-define macro to use it. - -2000-08-02 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * GNUmakefile (CFLAGS): Add -mthreads. - Add new targets to generate cpp and asm output. - - * sync.c (pthread_join): Remove dead code. - -2000-07-25 Tristan Savatier <tristan@mpegtv.com> - - * sched.c (sched_get_priority_max): Handle different WinCE and - Win32 priority values together. - (sched_get_priority_min): Ditto. - -2000-07-25 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * create.c (pthread_create): Force new threads to wait until - pthread_create has the new thread's handle; we also retain - a local copy of the handle for internal use until - pthread_create returns. - - * private.c (ptw32_threadStart): Initialise ei[]. - (ptw32_threadStart): When beginthread is used to start the - thread, force waiting until the creator thread had the - thread handle. - - * cancel.c (ptw32_cancel_thread): Include context switch - code for defined(_X86_) environments in addition to _M_IX86. - - * rwlock.c (pthread_rwlock_destroy): Assignment changed - to avoid compiler warning. - - * private.c (ptw32_get_exception_services_code): Cast - NULL return value to avoid compiler warning. - - * cleanup.c (pthread_pop_cleanup): Initialise "cleanup" variable - to avoid compiler warnings. - - * misc.c (ptw32_new): Change "new" variable to "t" to avoid - confusion with the C++ keyword of the same name. - - * condvar.c (cond_wait_cleanup): Initialise lastWaiter variable. - (cond_timedwait): Remove unused local variables. to avoid - compiler warnings. - - * dll.c (dllMain): Remove 2000-07-21 change - problem - appears to be in pthread_create(). - -2000-07-22 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * tsd.c (pthread_key_create): If a destructor was given - and the pthread_mutex_init failed, then would try to - reference a NULL pointer (*key); eliminate this section of - code by using a dynamically initialised mutex - (PTHREAD_MUTEX_INITIALIZER). - - * tsd.c (pthread_setspecific): Return an error if - unable to set the value; simplify cryptic conditional. - - * tsd.c (pthread_key_delete): Locking threadsLock relied - on mutex_lock returning an error if the key has no destructor. - ThreadsLock is only initialised if the key has a destructor. - Making this mutex a static could reduce the number of mutexes - used by an application since it is actually created only at - first use and it's often destroyed soon after. - -2000-07-22 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * FAQ: Added Q5 and Q6. - -2000-07-21 David Baggett <dmb@itasoftware.com> - - * dll.c: Include resource leakage work-around. This is a - partial FIXME which doesn't stop all leakage. The real - problem needs to be found and fixed. - -2000-07-21 Ross Johnson <rpj@setup1.ise.canberra.edu.au> - - * create.c (pthread_create): Set threadH to 0 (zero) - everywhere. Some assignments were using NULL. Maybe - it should be NULL everywhere - need to check. (I know - they are nearly always the same thing - but not by - definition.) - - * misc.c (pthread_self): Try to catch NULL thread handles - at the point where they might be generated, even though - they should always be valid at this point. - - * tsd.c (pthread_setspecific): return an error value if - pthread_self() returns NULL. - - * sync.c (pthread_join): return an error value if - pthread_self() returns NULL. - - * signal.c (pthread_sigmask): return an error value if - pthread_self() returns NULL. - -2000-03-02 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * attr.c (pthread_attr_init): Set default stacksize to zero (0) - rather than PTHREAD_STACK_MIN even though these are now the same. - - * pthread.h (PTHREAD_STACK_MIN): Lowered to 0. - -2000-01-28 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * mutex.c (pthread_mutex_init): Free mutex if it has been alloced; - if critical sections can be used instead of Win32 mutexes, test - that the critical section works and return an error if not. - -2000-01-07 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * cleanup.c (pthread_pop_cleanup): Include SEH code only if MSC is not - compiling as C++. - (pthread_push_cleanup): Include SEH code only if MSC is not - compiling as C++. - - * pthread.h: Include SEH code only if MSC is not - compiling as C++. - - * implement.h: Include SEH code only if MSC is not - compiling as C++. - - * cancel.c (ptw32_cancel_thread): Add _M_IX86 check. - (pthread_testcancel): Include SEH code only if MSC is not - compiling as C++. - (ptw32_cancel_self): Include SEH code only if MSC is not - compiling as C++. - -2000-01-06 Erik Hensema <erik.hensema@group2000.nl> - - * Makefile: Remove inconsistencies in 'cl' args - -2000-01-04 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * private.c (ptw32_get_exception_services_code): New; returns - value of EXCEPTION_PTW32_SERVICES. - (ptw32_processInitialize): Remove initialisation of - ptw32_exception_services which is no longer needed. - - * pthread.h (ptw32_exception_services): Remove extern. - (ptw32_get_exception_services_code): Add function prototype; - use this to return EXCEPTION_PTW32_SERVICES value instead of - using the ptw32_exception_services variable which I had - trouble exporting through pthread.def. - - * global.c (ptw32_exception_services): Remove declaration. - -1999-11-22 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * implement.h: Forward declare ptw32_new(); - - * misc.c (ptw32_new): New; alloc and initialise a new pthread_t. - (pthread_self): New thread struct is generated by new routine - ptw32_new(). - - * create.c (pthread_create): New thread struct is generated - by new routine ptw32_new(). - -1999-11-21 Ross Johnson <rpj@special.ise.canberra.edu.au> - - * global.c (ptw32_exception_services): Declare new variable. - - * private.c (ptw32_threadStart): Destroy thread's - cancelLock mutex; make 'catch' and '__except' usageimmune to - redfinitions in pthread.h. - (ptw32_processInitialize): Init new constant ptw32_exception_services. - - * create.c (pthread_create): Initialise thread's cancelLock - mutex. - - * cleanup.c (pthread_pop_cleanup): Make 'catch' and '__except' - usage immune to redfinition s in pthread.h. - - * private.c: Ditto. - - * pthread.h (catch): Redefine 'catch' so that C++ applications - won't catch our internal exceptions. - (__except): ditto for __except. - - * implement.h (ptw32_catch): Define internal version - of 'catch' because 'catch' is redefined by pthread.h. - (__except): ditto for __except. - (struct pthread_t_): Add cancelLock mutex for async cancel - safety. - -1999-11-21 Jason Nye <jnye@nbnet.nb.ca>, Erik Hensema <erik.hensema@group2000.nl> - - * cancel.c (ptw32_cancel_self): New; part of the async - cancellation implementation. - (ptw32_cancel_thread): Ditto; this function is X86 - processor specific. - (pthread_setcancelstate): Add check for pending async - cancel request and cancel the calling thread if - required; add async-cancel safety lock. - (pthread_setcanceltype): Ditto. - -1999-11-13 Erik Hensema <erik.hensema@group2000.nl> - - * configure.in (AC_OUTPUT): Put generated output into GNUmakefile - rather than Makefile. Makefile will become the MSC nmake compatible - version - -1999-11-13 John Bossom (John.Bossom@cognos.com> - - * misc.c (pthread_self): Add a note about GetCurrentThread - returning a pseudo-handle - -1999-11-10 Todd Owen <towen@lucidcalm.dropbear.id.au> - - * dll.c (dllMain): Free kernel32 ASAP. - If TryEnterCriticalSection is not being used, then free - the kernel32.dll handle now, rather than leaving it until - DLL_PROCESS_DETACH. - - Note: this is not a pedantic exercise in freeing unused - resources! It is a work-around for a bug in Windows 95 - (see microsoft knowledge base article, Q187684) which - does Bad Things when FreeLibrary is called within - the DLL_PROCESS_DETACH code, in certain situations. - Since w95 just happens to be a platform which does not - provide TryEnterCriticalSection, the bug will be - effortlessly avoided. - -1999-11-10 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * sync.c (pthread_join): Make it a deferred cancelation point. - - * misc.c (pthread_self): Explicitly initialise implicitly - created thread state to default values. - -1999-11-05 Tristan Savatier <tristan@mpegtv.com> - - * pthread.h (winsock.h): Include unconditionally. - (ETIMEDOUT): Change fallback value to that defined by winsock.h. - - * general: Patched for portability to WinCE. The details are - described in the file WinCE-PORT. Follow the instructions - in README.WinCE to make the appropriate changes in config.h. - -1999-10-30 Erik Hensema <erik.hensema@group2000.nl> - - * create.c (pthread_create): Explicitly initialise thread state to - default values. - - * cancel.c (pthread_setcancelstate): Check for NULL 'oldstate' - for compatibility with Solaris pthreads; - (pthread_setcanceltype): ditto: - -1999-10-23 Erik Hensema <erik.hensema@group2000.nl> - - * pthread.h (ctime_r): Fix incorrect argument "_tm" - -1999-10-21 Aurelio Medina <aureliom@crt.com> - - * pthread.h (_POSIX_THREADS): Only define it if it isn't - already defined. Projects may need to define this on - the CC command line under Win32 as it doesn't have unistd.h - -1999-10-17 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * rwlock.c (pthread_rwlock_destroy): Add cast to remove compile - warning. - - * condvar.c (pthread_cond_broadcast): Only release semaphores - if there are waiting threads. - -1999-10-15 Lorin Hochstein <lmh@xiphos.ca>, Peter Slacik <Peter.Slacik@tatramed.sk> - - * condvar.c (cond_wait_cleanup): New static cleanup handler for - cond_timedwait; - (cond_timedwait): pthread_cleanup_push args changed; - canceling a thread while it's in pthread_cond_wait - will now decrement the waiters count and cleanup if it's the - last waiter. - -1999-10-15 Graham Dumpleton <Graham.Dumpleton@ra.pad.otc.telstra.com.au> - - * condvar.c (cond_wait_cleanup): the last waiter will now reset the CV's - wasBroadcast flag - -Thu Sep 16 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * rwlock.c (pthread_rwlock_destroy): Add serialisation. - (_rwlock_check_need_init): Check for detroyed rwlock. - * rwlock.c: Check return codes from _rwlock_check_need_init(); - modify comments; serialise access to rwlock objects during - operations; rename rw_mutex to rw_lock. - * implement.h: Rename rw_mutex to rw_lock. - * mutex.c (pthread_mutex_destroy): Add serialisation. - (_mutex_check_need_init): Check for detroyed mutex. - * condvar.c (pthread_cond_destroy): Add serialisation. - (_cond_check_need_init): Check for detroyed condvar. - * mutex.c: Modify comments. - * condvar.c: Modify comments. - -1999-08-10 Aurelio Medina <aureliom@crt.com> - - * implement.h (pthread_rwlock_t_): Add. - * pthread.h (pthread_rwlock_t): Add. - (PTHREAD_RWLOCK_INITIALIZER): Add. - Add rwlock function prototypes. - * rwlock.c: New module. - * pthread.def: Add new rwlock functions. - * private.c (ptw32_processInitialize): initialise - ptw32_rwlock_test_init_lock critical section. - * global.c (ptw32_rwlock_test_init_lock): Add. - - * mutex.c (pthread_mutex_destroy): Don't free mutex memory - if mutex is PTHREAD_MUTEX_INITIALIZER and has not been - initialised yet. - -1999-08-08 Milan Gardian <mg@tatramed.sk> - - * mutex.c (pthread_mutex_destroy): Free mutex memory. - -1999-08-22 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * exit.c (pthread_exit): Fix reference to potentially - uninitialised pointer. - -1999-08-21 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * private.c (ptw32_threadStart): Apply fix of 1999-08-19 - this time to C++ and non-trapped C versions. Ommitted to - do this the first time through. - -1999-08-19 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * private.c (ptw32_threadStart): Return exit status from - the application thread startup routine. - - Milan Gardian <mg@tatramed.sk> - -1999-08-18 John Bossom <john.Bossom@cognos.com> - - * exit.c (pthread_exit): Put status into pthread_t->exitStatus - * private.c (ptw32_threadStart): Set pthread->exitStatus - on exit of try{} block. - * sync.c (pthread_join): use pthread_exitStatus value if the - thread exit doesn't return a value (for Mingw32 CRTDLL - which uses endthread instead of _endthreadex). - -Tue Aug 17 20:17:58 CDT 1999 Mumit Khan <khan@xraylith.wisc.edu> - - * create.c (pthread_create): Add CRTDLL suppport. - * exit.c (pthread_exit): Likewise. - * private.c (ptw32_threadStart): Likewise. - (ptw32_threadDestroy): Likewise. - * sync.c (pthread_join): Likewise. - * tests/join1.c (main): Warn about partial support for CRTDLL. - -Tue Aug 17 20:00:08 1999 Mumit Khan <khan@xraylith.wisc.edu> - - * Makefile.in (LD): Delete entry point. - * acconfig.h (STDCALL): Delete unused macro. - * configure.in: Remove test for STDCALL. - * config.h.in: Regenerate. - * errno.c (_errno): Fix self type. - * pthread.h (PT_STDCALL): Move from here to - * implement.h (PT_STDCALL): here. - (ptw32_threadStart): Fix prototype. - * private.c (ptw32_threadStart): Likewise. - -1999-08-14 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * exit.c (pthread_exit): Don't call pthread_self() but - get thread handle directly from TSD for efficiency. - -1999-08-12 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * private.c (ptw32_threadStart): ei[] only declared if _MSC_VER. - - * exit.c (pthread_exit): Check for implicitly created threads - to avoid raising an unhandled exception. - -1999-07-12 Peter Slacik <Peter.Slacik@tatramed.sk> - - * condvar.c (pthread_cond_destroy): Add critical section. - (cond_timedwait): Add critical section; check for timeout - waiting on semaphore. - (pthread_cond_broadcast): Add critical section. - -1999-07-09 Lorin Hochstein <lmh@xiphos.ca>, John Bossom <John.Bossom@Cognos.COM> - - The problem was that cleanup handlers were not executed when - pthread_exit() was called. - - * implement.h (pthread_t_): Add exceptionInformation element for - C++ per-thread exception information. - (general): Define and rename exceptions. - -1999-07-09 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * misc.c (CancelableWait): PTW32_EPS_CANCEL (SEH) and - ptw32_exception_cancel (C++) used to identify the exception. - - * cancel.c (pthread_testcancel): PTW32_EPS_CANCEL (SEH) and - ptw32_exception_cancel (C++) used to identify the exception. - - * exit.c (pthread_exit): throw/raise an exception to return to - ptw32_threadStart() to exit the thread. PTW32_EPS_EXIT (SEH) - and ptw32_exception_exit (C++) used to identify the exception. - - * private.c (ptw32_threadStart): Add pthread_exit exception trap; - clean up and exit the thread directly rather than via pthread_exit(). - -Sun May 30 00:25:02 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * semaphore.h (mode_t): Conditionally typedef it. - -Fri May 28 13:33:05 1999 Mark E. Armstrong <avail@pacbell.net> - - * condvar.c (pthread_cond_broadcast): Fix possible memory fault - -Thu May 27 13:08:46 1999 Peter Slacik <Peter.Slacik@tatramed.sk> - - * condvar.c (pthread_cond_broadcast): Fix logic bug - -Thu May 27 13:08:46 1999 Bossom, John <John.Bossom@Cognos.COM> - - * condvar.c (pthread_cond_broadcast): optimise sem_post loop - -Fri May 14 12:13:18 1999 Mike Russo <miker@eai.com> - - * attr.c (pthread_attr_setdetachstate): Fix logic bug - -Sat May 8 09:42:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.def (sem_open): Add. - (sem_close): Add. - (sem_unlink): Add. - (sem_getvalue): Add. - - * FAQ (Question 3): Add. - -Thu Apr 8 01:16:23 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * semaphore.c (sem_open): New function; returns an error (ENOSYS). - (sem_close): ditto. - (sem_unlink): ditto. - (sem_getvalue): ditto. - - * semaphore.h (_POSIX_SEMAPHORES): define. - -Wed Apr 7 14:09:52 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * errno.c (_REENTRANT || _MT): Invert condition. - - * pthread.h (_errno): Conditionally include prototype. - -Wed Apr 7 09:37:00 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * *.c (comments): Remove individual attributions - these are - documented sufficiently elsewhere. - - * implement.h (pthread.h): Remove extraneous include. - -Sun Apr 4 11:05:57 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * sched.c (sched.h): Include. - - * sched.h: New file for POSIX 1b scheduling. - - * pthread.h: Move opaque structures to implement.h; move sched_* - prototypes out and into sched.h. - - * implement.h: Add opaque structures from pthread.h. - - * sched.c (sched_yield): New function. - - * condvar.c (ptw32_sem_*): Rename to sem_*; except for - ptw32_sem_timedwait which is an private function. - -Sat Apr 3 23:28:00 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * Makefile.in (OBJS): Add errno.o. - -Fri Apr 2 11:08:50 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h (ptw32_sem_*): Remove prototypes now defined in - semaphore.h. - - * pthread.h (sempahore.h): Include. - - * semaphore.h: New file for POSIX 1b semaphores. - - * semaphore.c (ptw32_sem_timedwait): Moved to private.c. - - * pthread.h (ptw32_sem_t): Change to sem_t. - - * private.c (ptw32_sem_timedwait): Moved from semaphore.c; - set errno on error. - - * pthread.h (pthread_t_): Add per-thread errno element. - -Fri Apr 2 11:08:50 1999 John Bossom <jebossom@cognos.com> - - * semaphore.c (ptw32_sem_*): Change to sem_*; these functions - will be exported from the library; set errno on error. - - * errno.c (_errno): New file. New function. - -Fri Mar 26 14:11:45 1999 Tor Lillqvist <tml@iki.fi> - - * semaphore.c (ptw32_sem_timedwait): Check for negative - milliseconds. - -Wed Mar 24 11:32:07 1999 John Bossom <jebossom@cognos.com> - - * misc.c (CancelableWait): Initialise exceptionInformation[2]. - (pthread_self): Get a real Win32 thread handle for implicit threads. - - * cancel.c (pthread_testcancel): Initialise exceptionInformation[2]. - - * implement.h (SE_INFORMATION): Fix values. - - * private.c (ptw32_threadDestroy): Close the thread handle. - -Fri Mar 19 12:57:27 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * cancel.c (comments): Update and cleanup. - -Fri Mar 19 09:12:59 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * private.c (ptw32_threadStart): status returns PTHREAD_CANCELED. - - * pthread.h (PTHREAD_CANCELED): defined. - -Tue Mar 16 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * all: Add GNU LGPL and Copyright and Warranty. - -Mon Mar 15 00:20:13 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * condvar.c (pthread_cond_init): fix possible uninitialised use - of cv. - -Sun Mar 14 21:01:59 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * condvar.c (pthread_cond_destroy): don't do full cleanup if - static initialised cv has never been used. - (cond_timedwait): check result of auto-initialisation. - -Thu Mar 11 09:01:48 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.h (pthread_mutex_t): revert to (pthread_mutex_t *); - define a value to serve as PTHREAD_MUTEX_INITIALIZER. - (pthread_mutex_t_): remove staticinit and valid elements. - (pthread_cond_t): revert to (pthread_cond_t_ *); - define a value to serve as PTHREAD_COND_INITIALIZER. - (pthread_cond_t_): remove staticinit and valid elements. - - * mutex.c (pthread_mutex_t args): adjust indirection of references. - (all functions): check for PTHREAD_MUTEX_INITIALIZER value; - check for NULL (invalid). - - * condvar.c (pthread_cond_t args): adjust indirection of references. - (all functions): check for PTHREAD_COND_INITIALIZER value; - check for NULL (invalid). - -Wed Mar 10 17:18:12 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * misc.c (CancelableWait): Undo changes from Mar 8 and 7. - -Mon Mar 8 11:18:59 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * misc.c (CancelableWait): Ensure cancelEvent handle is the lowest - indexed element in the handles array. Enhance test for abandoned - objects. - - * pthread.h (PTHREAD_MUTEX_INITIALIZER): Trailing elements not - initialised are set to zero by the compiler. This avoids the - problem of initialising the opaque critical section element in it. - (PTHREAD_COND_INITIALIZER): Ditto. - - * semaphore.c (ptw32_sem_timedwait): Check sem == NULL earlier. - -Sun Mar 7 12:31:14 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * condvar.c (pthread_cond_init): set semaphore initial value - to 0, not 1. cond_timedwait was returning signaled immediately. - - * misc.c (CancelableWait): Place the cancel event handle first - in the handle table for WaitForMultipleObjects. This ensures that - the cancel event is recognised and acted apon if both objects - happen to be signaled together. - - * private.c (ptw32_cond_test_init_lock): Initialise and destroy. - - * implement.h (ptw32_cond_test_init_lock): Add extern. - - * global.c (ptw32_cond_test_init_lock): Add declaration. - - * condvar.c (pthread_cond_destroy): check for valid initialised CV; - flag destroyed CVs as invalid. - (pthread_cond_init): pthread_cond_t is no longer just a pointer. - This is because PTHREAD_COND_INITIALIZER needs state info to reside - in pthread_cond_t so that it can initialise on first use. Will work on - making pthread_cond_t (and other objects like it) opaque again, if - possible, later. - (cond_timedwait): add check for statically initialisation of - CV; initialise on first use. - (pthread_cond_signal): check for valid CV. - (pthread_cond_broadcast): check for valid CV. - (_cond_check_need_init): Add. - - * pthread.h (PTHREAD_COND_INITIALIZER): Fix. - (pthread_cond_t): no longer a pointer to pthread_cond_t_. - (pthread_cond_t_): add 'staticinit' and 'valid' elements. - -Sat Mar 6 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h: Undate comments. - -Sun Feb 21 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.h (PTHREAD_MUTEX_INITIALIZER): missing braces around - cs element initialiser. - -1999-02-21 Ben Elliston <bje@cygnus.com> - - * pthread.h (pthread_exit): The return type of this function is - void, not int. - - * exit.c (pthread_exit): Do not return 0. - -Sat Feb 20 16:03:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * dll.c (DLLMain): Expand TryEnterCriticalSection support test. - - * mutex.c (pthread_mutex_trylock): The check for - ptw32_try_enter_critical_section == NULL should have been - removed long ago. - -Fri Feb 19 16:03:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * sync.c (pthread_join): Fix pthread_equal() test. - - * mutex.c (pthread_mutex_trylock): Check mutex != NULL before - using it. - -Thu Feb 18 16:17:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * misc.c (pthread_equal): Fix inverted result. - - * Makefile.in: Use libpthread32.a as the name of the DLL export - library instead of pthread.lib. - - * condvar.c (pthread_cond_init): cv could have been used unitialised; - initialise. - - * create.c (pthread_create): parms could have been used unitialised; - initialise. - - * pthread.h (struct pthread_once_t_): Remove redefinition. - -Sat Feb 13 03:03:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.h (struct pthread_once_t_): Replaced. - - * misc.c (pthread_once): Replace with John Bossom's version; - has lighter weight serialisation; fixes problem of not holding - competing threads until after the init_routine completes. - -Thu Feb 11 13:34:14 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * misc.c (CancelableWait): Change C++ exception throw. - - * sync.c (pthread_join): Change FIXME comment - issue resolved. - -Wed Feb 10 12:49:11 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * configure: Various temporary changes. - - Kevin Ruland <Kevin.Ruland@anheuser-busch.com> - - * README: Update. - - * pthread.def (pthread_attr_getstackaddr): uncomment - (pthread_attr_setstackaddr): uncomment - -Fri Feb 5 13:42:30 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * semaphore.c: Comment format changes. - -Thu Feb 4 10:07:28 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * global.c: Remove ptw32_exception instantiation. - - * cancel.c (pthread_testcancel): Change C++ exception throw. - - * implement.h: Remove extern declaration. - -Wed Feb 3 13:04:44 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * cleanup.c: Rename ptw32_*_cleanup() to pthread_*_cleanup(). - - * pthread.def: Ditto. - - * pthread.h: Ditto. - - * pthread.def (pthread_cleanup_push): Remove from export list; - the function is defined as a macro under all compilers. - (pthread_cleanup_pop): Ditto. - - * pthread.h: Remove #if defined(). - -Wed Feb 3 10:13:48 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * sync.c (pthread_join): Check for NULL value_ptr arg; - check for detached threads. - -Tue Feb 2 18:07:43 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * implement.h: Add #include <pthread.h>. - Change sem_t to ptw32_sem_t. - - Various patches by Kevin Ruland <Kevin.Ruland@anheuser-busch.com> - - * signal.c (pthread_sigmask): Add and modify casts. - Reverse LHS/RHS bitwise assignments. - - * pthread.h: Remove #include <semaphore.h>. - (PTW32_ATTR_VALID): Add cast. - (struct pthread_t_): Add sigmask element. - - * dll.c: Add "extern C" for DLLMain. - (DllMain): Add cast. - - * create.c (pthread_create): Set sigmask in thread. - - * condvar.c: Remove #include. Change sem_* to ptw32_sem_*. - - * attr.c: Changed #include. - - * Makefile.in: Additional targets and changes to build the library - as a DLL. - -Fri Jan 29 11:56:28 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * Makefile.in (OBJS): Add semaphore.o to list. - - * semaphore.c (ptw32_sem_timedwait): Move from private.c. - Rename sem_* to ptw32_sem_*. - - * pthread.h (pthread_cond_t): Change type of sem_t. - _POSIX_SEMAPHORES no longer defined. - - * semaphore.h: Contents moved to implement.h. - Removed from source tree. - - * implement.h: Add semaphore function prototypes and rename all - functions to prepend 'ptw32_'. They are - now private to the pthreads-win32 implementation. - - * private.c: Change #warning. - Move ptw32_sem_timedwait() to semaphore.c. - - * cleanup.c: Change #warning. - - * misc.c: Remove #include <errno.h> - - * pthread.def: Cleanup CVS merge conflicts. - - * global.c: Ditto. - - * ChangeLog: Ditto. - - * cleanup.c: Ditto. - -Sun Jan 24 01:34:52 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * semaphore.c (sem_wait): Remove second arg to - pthreadCancelableWait() call. - -Sat Jan 23 17:36:40 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.def: Add new functions to export list. - - * pthread.h (PTHREAD_MUTEX_AUTO_CS_NP): New. - (PTHREAD_MUTEX_FORCE_CS_NP): New. - - * README: Updated. - -Fri Jan 22 14:31:59 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * Makefile.in (CFLAGS): Remove -fhandle-exceptions. Not needed - with egcs. Add -g for debugging. - - * create.c (pthread_create): Replace __stdcall with PT_STDCALL - macro. This is a hack and must be fixed. - - * misc.c (CancelableWait): Remove redundant statement. - - * mutex.c (pthread_mutexattr_init): Cast calloc return value. - - * misc.c (CancelableWait): Add cast. - (pthread_self): Add cast. - - * exit.c (pthread_exit): Add cast. - - * condvar.c (pthread_condattr_init): Cast calloc return value. - - * cleanup.c: Reorganise conditional compilation. - - * attr.c (pthread_attr_init): Remove unused 'result'. - Cast malloc return value. - - * private.c (ptw32_callUserDestroyRoutines): Redo conditional - compilation. - - * misc.c (CancelableWait): C++ version uses 'throw'. - - * cancel.c (pthread_testcancel): Ditto. - - * implement.h (class ptw32_exception): Define for C++. - - * pthread.h: Fix C, C++, and Win32 SEH condition compilation - mayhem around pthread_cleanup_* defines. C++ version now uses John - Bossom's cleanup handlers. - (pthread_attr_t): Make 'valid' unsigned. - Define '_timeb' as 'timeb' for Ming32. - Define PT_STDCALL as nothing for Mingw32. May be temporary. - - * cancel.c (pthread_testcancel): Cast return value. - -Wed Jan 20 09:31:28 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.h (pthread_mutexattr_t): Changed to a pointer. - - * mutex.c (pthread_mutex_init): Conditionally create Win32 mutex - - from John Bossom's implementation. - (pthread_mutex_destroy): Conditionally close Win32 mutex - - from John Bossom's implementation. - (pthread_mutexattr_init): Replaced by John Bossom's version. - (pthread_mutexattr_destroy): Ditto. - (pthread_mutexattr_getpshared): New function from John Bossom's - implementation. - (pthread_mutexattr_setpshared): New function from John Bossom's - implementation. - -Tue Jan 19 18:27:42 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * pthread.h (pthreadCancelableTimedWait): New prototype. - (pthreadCancelableWait): Remove second argument. - - * misc.c (CancelableWait): New static function is - pthreadCancelableWait() renamed. - (pthreadCancelableWait): Now just calls CancelableWait() with - INFINITE timeout. - (pthreadCancelableTimedWait): Just calls CancelableWait() - with passed in timeout. - -Tue Jan 19 18:27:42 1999 Scott Lightner <scott@curriculum.com> - - * private.c (ptw32_sem_timedwait): 'abstime' arg really is - absolute time. Calculate relative time to wait from current - time before passing timeout to new routine - pthreadCancelableTimedWait(). - -Tue Jan 19 10:27:39 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.h (pthread_mutexattr_setforcecs_np): New prototype. - - * mutex.c (pthread_mutexattr_init): Init 'pshared' and 'forcecs' - attributes to 0. - (pthread_mutexattr_setforcecs_np): New function (not portable). - - * pthread.h (pthread_mutex_t): - Add 'mutex' element. Set to NULL in PTHREAD_MUTEX_INITIALIZER. - The pthread_mutex_*() routines will try to optimise performance - by choosing either mutexes or critical sections as the basis - for pthread mutexes for each indevidual mutex. - (pthread_mutexattr_t_): Add 'forcecs' element. - Some applications may choose to force use of critical sections - if they know that:- - the mutex is PROCESS_PRIVATE and, - either the OS supports TryEnterCriticalSection() or - pthread_mutex_trylock() will never be called on the mutex. - This attribute will be setable via a non-portable routine. - - Note: We don't yet support PROCESS_SHARED mutexes, so the - implementation as it stands will default to Win32 mutexes only if - the OS doesn't support TryEnterCriticalSection. On Win9x, and early - versions of NT 'forcecs' will need to be set in order to get - critical section based mutexes. - -Sun Jan 17 12:01:26 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.h (PTHREAD_MUTEX_INITIALIZER): Init new 'staticinit' - value to '1' and existing 'valid' value to '1'. - - * global.c (ptw32_mutex_test_init_lock): Add. - - * implement.h (ptw32_mutex_test_init_lock.): Add extern. - - * private.c (ptw32_processInitialize): Init critical section for - global lock used by _mutex_check_need_init(). - (ptw32_processTerminate): Ditto (:s/Init/Destroy/). - - * dll.c (dllMain): Move call to FreeLibrary() so that it is only - called once when the process detaches. - - * mutex.c (_mutex_check_need_init): New static function to test - and init PTHREAD_MUTEX_INITIALIZER mutexes. Provides serialised - access to the internal state of the uninitialised static mutex. - Called from pthread_mutex_trylock() and pthread_mutex_lock() which - do a quick unguarded test to check if _mutex_check_need_init() - needs to be called. This is safe as the test is conservative - and is repeated inside the guarded section of - _mutex_check_need_init(). Thus in all calls except the first - calls to lock static mutexes, the additional overhead to lock any - mutex is a single memory fetch and test for zero. - - * pthread.h (pthread_mutex_t_): Add 'staticinit' member. Mutexes - initialised by PTHREAD_MUTEX_INITIALIZER aren't really initialised - until the first attempt to lock it. Using the 'valid' - flag (which flags the mutex as destroyed or not) to record this - information would be messy. It is possible for a statically - initialised mutex such as this to be destroyed before ever being - used. - - * mutex.c (pthread_mutex_trylock): Call _mutex_check_need_init() - to test/init PTHREAD_MUTEX_INITIALIZER mutexes. - (pthread_mutex_lock): Ditto. - (pthread_mutex_unlock): Add check to ensure we don't try to unlock - an unitialised static mutex. - (pthread_mutex_destroy): Add check to ensure we don't try to delete - a critical section that we never created. Allows us to destroy - a static mutex that has never been locked (and hence initialised). - (pthread_mutex_init): Set 'staticinit' flag to 0 for the new mutex. - -Sun Jan 17 12:01:26 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * private.c (ptw32_sem_timedwait): Move from semaphore.c. - - * semaphore.c : Remove redundant #includes. - (ptw32_sem_timedwait): Move to private.c. - (sem_wait): Add missing abstime arg to pthreadCancelableWait() call. - -Fri Jan 15 23:38:05 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * condvar.c (cond_timedwait): Remove comment. - -Fri Jan 15 15:41:28 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * pthread.h: Add new 'abstime' arg to pthreadCancelableWait() - prototype. - - * condvar.c (cond_timedwait): New generalised function called by - both pthread_cond_wait() and pthread_cond_timedwait(). This is - essentially pthread_cond_wait() renamed and modified to add the - 'abstime' arg and call the new ptw32_sem_timedwait() instead of - sem_wait(). - (pthread_cond_wait): Now just calls the internal static - function cond_timedwait() with an INFINITE wait. - (pthread_cond_timedwait): Now implemented. Calls the internal - static function cond_timedwait(). - - * implement.h (ptw32_sem_timedwait): New internal function - prototype. - - * misc.c (pthreadCancelableWait): Added new 'abstime' argument - to allow shorter than INFINITE wait. - - * semaphore.c (ptw32_sem_timedwait): New function for internal - use. This is essentially sem_wait() modified to add the - 'abstime' arg and call the modified (see above) - pthreadCancelableWait(). - -Thu Jan 14 14:27:13 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * cleanup.c: Correct _cplusplus to __cplusplus wherever used. - - * Makefile.in: Add CC=g++ and add -fhandle-exceptions to CFLAGS. - The derived Makefile will compile all units of the package as C++ - so that those which include try/catch exception handling should work - properly. The package should compile ok if CC=gcc, however, exception - handling will not be included and thus thread cancellation, for - example, will not work. - - * cleanup.c (ptw32_pop_cleanup): Add #warning to compile this - file as C++ if using a cygwin32 environment. Perhaps the whole package - should be compiled using g++ under cygwin. - - * private.c (ptw32_threadStart): Change #error directive - into #warning and bracket for __CYGWIN__ and derivative compilers. - -Wed Jan 13 09:34:52 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * build.bat: Delete old binaries before compiling/linking. - -Tue Jan 12 09:58:38 1999 Tor Lillqvist <tml@iki.fi> - - * dll.c: The Microsoft compiler pragmas probably are more - appropriately protected by _MSC_VER than by _WIN32. - - * pthread.h: Define ETIMEDOUT. This should be returned by - pthread_cond_timedwait which is not implemented yet as of - snapshot-1999-01-04-1305. It was implemented in the older version. - The Microsoft compiler pragmas probably are more appropriately - protected by _MSC_VER than by _WIN32. - - * pthread.def: pthread_mutex_destroy was missing from the def file - - * condvar.c (pthread_cond_broadcast): Ensure we only wait on threads - if there were any waiting on the condition. - I think pthread_cond_broadcast should do the WaitForSingleObject - only if cv->waiters > 0? Otherwise it seems to hang, at least in the - testg thread program from glib. - -Tue Jan 12 09:58:38 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * condvar.c (pthread_cond_timedwait): Fix function description - comments. - - * semaphore.c (sem_post): Correct typo in comment. - -Mon Jan 11 20:33:19 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.h: Re-arrange conditional compile of pthread_cleanup-* - macros. - - * cleanup.c (ptw32_push_cleanup): Provide conditional - compile of cleanup->prev. - -1999-01-11 Tor Lillqvist <tml@iki.fi> - - * condvar.c (pthread_cond_init): Invert logic when testing the - return value from calloc(). - -Sat Jan 9 14:32:08 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h: Compile-time switch for CYGWIN derived environments - to use CreateThread instead of _beginthreadex. Ditto for ExitThread. - Patch provided by Anders Norlander <anorland@hem2.passagen.se>. - -Tue Jan 5 16:33:04 1999 Ross Johnson <rpj@swan.canberra.edu.au> - - * cleanup.c (ptw32_pop_cleanup): Add C++ version of __try/__except - block. Move trailing "}" out of #ifdef _WIN32 block left there by - (rpj's) mistake. - - * private.c: Remove #include <errno.h> which is included by pthread.h. - -1998-12-11 Ben Elliston <bje@toilet.to.cygnus.com> - - * README: Update info about subscribing to the mailing list. - -Mon Jan 4 11:23:40 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * all: No code changes, just cleanup. - - remove #if 0 /* Pre Bossom */ enclosed code. - - Remove some redundant #includes. - * pthread.h: Update implemented/unimplemented routines list. - * Tag the bossom merge branch getting ready to merge back to main - trunk. - -Tue Dec 29 13:11:16 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h: Move the following struct definitions to pthread.h: - pthread_t_, pthread_attr_t_, pthread_mutex_t_, pthread_mutex_t_, - pthread_mutexattr_t_, pthread_key_t_, pthread_cond_t_, - pthread_condattr_t_, pthread_once_t_. - - * pthread.h: Add "_" prefix to pthread_push_cleanup and - pthread_pop_cleanup internal routines, and associated struct and - typedefs. - - * buildlib.bat: Add compile command for semaphore.c - - * pthread.def: Comment out pthread_atfork routine name. - Now unimplemented. - - * tsd.c (pthread_setspecific): Rename tkAssocCreate to - ptw32_tkAssocCreate. - (pthread_key_delete): Rename tkAssocDestroy to - ptw32_tkAssocDestroy. - - * sync.c (pthread_join): Rename threadDestroy to ptw32_threadDestroy - - * sched.c (is_attr): attr is now **attr (was *attr), so add extra - NULL pointer test. - (pthread_attr_setschedparam): Increase redirection for attr which is - now a **. - (pthread_attr_getschedparam): Ditto. - (pthread_setschedparam): Change thread validation and rename "thread" - Win32 thread Handle element name to match John Bossom's version. - (pthread_getschedparam): Ditto. - - * private.c (ptw32_threadDestroy): Rename call to - callUserDestroyRoutines() as ptw32_callUserDestroyRoutines() - - * misc.c: Add #include "implement.h". - - * dll.c: Remove defined(KLUDGE) wrapped code. - - * fork.c: Remove redefinition of ENOMEM. - Remove pthread_atfork() and fork() with #if 0/#endif. - - * create.c (pthread_create): Rename threadStart and threadDestroy calls - to ptw32_threadStart and ptw32_threadDestroy. - - * implement.h: Rename "detachedstate" to "detachstate". - - * attr.c: Rename "detachedstate" to "detachstate". - -Mon Dec 28 09:54:39 1998 John Bossom - - * semaphore.c: Initial version. - * semaphore.h: Initial version. - -Mon Dec 28 09:54:39 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.h (pthread_attr_t_): Change to *pthread_attr_t. - -Mon Dec 28 09:54:39 1998 John Bossom, Ben Elliston - - * attr.c (pthread_attr_setstacksize): Merge with John's version. - (pthread_attr_getstacksize): Merge with John's version. - (pthread_attr_setstackaddr): Merge with John's version. - (pthread_attr_getstackaddr): Merge with John's version. - (pthread_attr_init): Merge with John's version. - (pthread_attr_destroy): Merge with John's version. - (pthread_attr_getdetachstate): Merge with John's version. - (pthread_attr_setdetachstate): Merge with John's version. - (is_attr): attr is now **attr (was *attr), so add extra NULL pointer - test. - -Mon Dec 28 09:54:39 1998 Ross Johnson - - * implement.h (pthread_attr_t_): Add and rename elements in JEB's - version to correspond to original, so that it can be used with - original attr routines. - - * pthread.h: Add #endif at end which was truncated in merging. - -Sun Dec 20 14:51:58 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * misc.c (pthreadCancelableWait): New function by John Bossom. Non-standard - but provides a hook that can be used to implement cancellation points in - applications that use this library. - - * pthread.h (pthread_cleanup_pop): C++ (non-WIN32) version uses - try/catch to emulate John Bossom's WIN32 __try/__finally behaviour. - In the WIN32 version __finally block, add a test for AbnormalTermination otherwise - cleanup is only run if the cleanup_pop execute arg is non-zero. Cancellation - should cause the cleanup to run irrespective of the execute arg. - - * condvar.c (pthread_condattr_init): Replaced by John Bossom's version. - (pthread_condattr_destroy): Replaced by John Bossom's version. - (pthread_condattr_getpshared): Replaced by John Bossom's version. - (pthread_condattr_setpshared): Replaced by John Bossom's version. - (pthread_cond_init): Replaced by John Bossom's version. - Fix comment (refered to mutex rather than condition variable). - (pthread_cond_destroy): Replaced by John Bossom's version. - (pthread_cond_wait): Replaced by John Bossom's version. - (pthread_cond_timedwait): Replaced by John Bossom's version. - (pthread_cond_signal): Replaced by John Bossom's version. - (pthread_cond_broadcast): Replaced by John Bossom's version. - -Thu Dec 17 19:10:46 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * tsd.c (pthread_key_create): Replaced by John Bossom's version. - (pthread_key_delete): Replaced by John Bossom's version. - (pthread_setspecific): Replaced by John Bossom's version. - (pthread_getspecific): Replaced by John Bossom's version. - -Mon Dec 7 09:44:40 1998 John Bossom - - * cancel.c (pthread_setcancelstate): Replaced. - (pthread_setcanceltype): Replaced. - (pthread_testcancel): Replaced. - (pthread_cancel): Replaced. - - * exit.c (pthread_exit): Replaced. - - * misc.c (pthread_self): Replaced. - (pthread_equal): Replaced. - - * sync.c (pthread_detach): Replaced. - (pthread_join): Replaced. - - * create.c (pthread_create): Replaced. - - * private.c (ptw32_processInitialize): New. - (ptw32_processTerminate): New. - (ptw32_threadStart): New. - (ptw32_threadDestroy): New. - (ptw32_cleanupStack): New. - (ptw32_tkAssocCreate): New. - (ptw32_tkAssocDestroy): New. - (ptw32_callUserDestroyRoutines): New. - - * implement.h: Added non-API structures and declarations. - - * dll.c (PthreadsEntryPoint): Cast return value of GetProcAddress - to resolve compile warning from MSVC. - - * dll.c (DLLmain): Replaced. - * dll.c (PthreadsEntryPoint): - Re-applied Anders Norlander's patch:- - Initialize ptw32_try_enter_critical_section at startup - and release kernel32 handle when DLL is being unloaded. - -Sun Dec 6 21:54:35 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * buildlib.bat: Fix args to CL when building the .DLL - - * cleanup.c (ptw32_destructor_run_all): Fix TSD key management. - This is a tidy-up before TSD and Thread management is completely - replaced by John Bossom's code. - - * tsd.c (pthread_key_create): Fix TSD key management. - - * global.c (ptw32_key_virgin_next): Initialise. - - * build.bat: New DOS script to compile and link a pthreads app - using Microsoft's CL compiler linker. - * buildlib.bat: New DOS script to compile all the object files - and create pthread.lib and pthread.dll using Microsoft's CL - compiler linker. - -1998-12-05 Anders Norlander <anorland@hem2.passagen.se> - - * implement.h (ptw32_try_enter_critical_section): New extern - * dll.c (ptw32_try_enter_critical_section): New pointer to - TryEnterCriticalSection if it exists; otherwise NULL. - * dll.c (PthreadsEntryPoint): - Initialize ptw32_try_enter_critical_section at startup - and release kernel32 handle when DLL is being unloaded. - * mutex.c (pthread_mutex_trylock): Replaced check for NT with - a check if ptw32_try_enter_critical_section is valid - pointer to a function. Call ptw32_try_enter_critical_section - instead of TryEnterCriticalSection to avoid errors on Win95. - -Thu Dec 3 13:32:00 1998 Ross Johnson <rpj@ise.canberra.edu.au> - - * README: Correct cygwin32 compatibility statement. - -Sun Nov 15 21:24:06 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * cleanup.c (ptw32_destructor_run_all): Declare missing void * arg. - Fixup CVS merge conflicts. - -1998-10-30 Ben Elliston <bje@cygnus.com> - - * condvar.c (cond_wait): Fix semantic error. Test for equality - instead of making an assignment. - -Fri Oct 30 15:15:50 1998 Ross Johnson <rpj@swan.canberra.edu.au> - - * cleanup.c (ptw32_handler_push): Fixed bug appending new - handler to list reported by Peter Slacik - <Peter.Slacik@leibinger.freinet.de>. - (new_thread): Rename poorly named local variable to - "new_handler". - -Sat Oct 24 18:34:59 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * global.c: Add TSD key management array and index declarations. - - * implement.h: Ditto for externs. - -Fri Oct 23 00:08:09 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h (PTW32_TSD_KEY_REUSE): Add enum. - - * private.c (ptw32_delete_thread): Add call to - ptw32_destructor_run_all() to clean up the threads keys. - - * cleanup.c (ptw32_destructor_run_all): Check for no more dirty - keys to run destructors on. Assume that the destructor call always - succeeds and set the key value to NULL. - -Thu Oct 22 21:44:44 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * tsd.c (pthread_setspecific): Add key management code. - (pthread_key_create): Ditto. - (pthread_key_delete): Ditto. - - * implement.h (struct ptw32_tsd_key): Add status member. - - * tsd.c: Add description of pthread_key_delete() from the - standard as a comment. - -Fri Oct 16 17:38:47 1998 Ross Johnson <rpj@swan.canberra.edu.au> - - * cleanup.c (ptw32_destructor_run_all): Fix and improve - stepping through the key table. - -Thu Oct 15 14:05:01 1998 Ross Johnson <rpj@swan.canberra.edu.au> - - * private.c (ptw32_new_thread): Remove init of destructorstack. - No longer an element of pthread_t. - - * tsd.c (pthread_setspecific): Fix type declaration and cast. - (pthread_getspecific): Ditto. - (pthread_getspecific): Change error return value to NULL if key - is not in use. - -Thu Oct 15 11:53:21 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * global.c (ptw32_tsd_key_table): Fix declaration. - - * implement.h(ptw32_TSD_keys_TlsIndex): Add missing extern. - (ptw32_tsd_mutex): Ditto. - - * create.c (ptw32_start_call): Fix "keys" array declaration. - Add comment. - - * tsd.c (pthread_setspecific): Fix type declaration and cast. - (pthread_getspecific): Ditto. - - * cleanup.c (ptw32_destructor_run_all): Declare missing loop - counter. - -Wed Oct 14 21:09:24 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * private.c (ptw32_new_thread): Increment ptw32_threads_count. - (ptw32_delete_thread): Decrement ptw32_threads_count. - Remove some comments. - - * exit.c (ptw32_exit): : Fix two pthread_mutex_lock() calls that - should have been pthread_mutex_unlock() calls. - (ptw32_vacuum): Remove call to ptw32_destructor_pop_all(). - - * create.c (pthread_create): Fix two pthread_mutex_lock() calls that - should have been pthread_mutex_unlock() calls. - - * global.c (ptw32_tsd_mutex): Add mutex for TSD operations. - - * tsd.c (pthread_key_create): Add critical section. - (pthread_setspecific): Ditto. - (pthread_getspecific): Ditto. - (pthread_key_delete): Ditto. - - * sync.c (pthread_join): Fix two pthread_mutex_lock() calls that - should have been pthread_mutex_unlock() calls. - -Mon Oct 12 00:00:44 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h (ptw32_tsd_key_table): New. - - * create.c (ptw32_start_call): Initialise per-thread TSD keys - to NULL. - - * misc.c (pthread_once): Correct typo in comment. - - * implement.h (ptw32_destructor_push): Remove. - (ptw32_destructor_pop): Remove. - (ptw32_destructor_run_all): Rename from ptw32_destructor_pop_all. - (PTW32_TSD_KEY_DELETED): Add enum. - (PTW32_TSD_KEY_INUSE): Add enum. - - * cleanup.c (ptw32_destructor_push): Remove. - (ptw32_destructor_pop): Remove. - (ptw32_destructor_run_all): Totally revamped TSD. - - * dll.c (ptw32_TSD_keys_TlsIndex): Initialise. - - * tsd.c (pthread_setspecific): Totally revamped TSD. - (pthread_getspecific): Ditto. - (pthread_create): Ditto. - (pthread_delete): Ditto. - -Sun Oct 11 22:44:55 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * global.c (ptw32_tsd_key_table): Add new global. - - * implement.h (ptw32_tsd_key_t and struct ptw32_tsd_key): - Add. - (struct _pthread): Remove destructorstack. - - * cleanup.c (ptw32_destructor_run_all): Rename from - ptw32_destructor_pop_all. The key destructor stack was made - global rather than per-thread. No longer removes destructor nodes - from the stack. Comments updated. - -1998-10-06 Ben Elliston <bje@cygnus.com> - - * condvar.c (cond_wait): Use POSIX, not Win32 mutex calls. - (pthread_cond_broadcast): Likewise. - (pthread_cond_signal): Likewise. - -1998-10-05 Ben Elliston <bje@cygnus.com> - - * pthread.def: Update. Some functions aren't available yet, others - are macros in <pthread.h>. - - * tests/join.c: Remove; useless. - -Mon Oct 5 14:25:08 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * pthread.def: New file for building the DLL. - -1998-10-05 Ben Elliston <bje@cygnus.com> - - * misc.c (pthread_equal): Correct inverted logic bug. - (pthread_once): Use the POSIX mutex primitives, not Win32. Remove - irrelevant FIXME comment. - - * global.c (PTHREAD_MUTEX_INITIALIZER): Move to pthread.h. - - * pthread.h (PTHREAD_MUTEX_INITIALIZER): Define. - (pthread_mutex_t): Reimplement as a struct containing a valid - flag. If the flag is ever down upon entry to a mutex operation, - we call pthread_mutex_create() to initialise the object. This - fixes the problem of how to handle statically initialised objects - that can't call InitializeCriticalSection() due to their context. - (PTHREAD_ONCE_INIT): Define. - - * mutex.c (pthread_mutex_init): Set valid flag. - (pthread_mutex_destroy): Clear valid flag. - (pthread_mutex_lock): Check and handle the valid flag. - (pthread_mutex_unlock): Likewise. - (pthread_mutex_trylock): Likewise. - - * tests/mutex3.c: New file; test for the static initialisation - macro. Passes. - - * tests/create1.c: New file; test pthread_create(). Passes. - - * tests/equal.c: Poor test; remove. - - * tests/equal1.c New file; test pthread_equal(). Passes. - - * tests/once1.c: New file; test for pthread_once(). Passes. - - * tests/self.c: Remove; rename to self1.c. - - * tests/self1.c: This is the old self.c. - - * tests/self2.c: New file. Test pthread_self() with a single - thread. Passes. - - * tests/self3.c: New file. Test pthread_self() with a couple of - threads to ensure their thread IDs differ. Passes. - -1998-10-04 Ben Elliston <bje@cygnus.com> - - * tests/mutex2.c: Test pthread_mutex_trylock(). Passes. - - * tests/mutex1.c: New basic test for mutex functions (it passes). - (main): Eliminate warning. - - * configure.in: Test for __stdcall, not _stdcall. Typo. - - * configure: Regenerate. - - * attr.c (pthread_attr_setstackaddr): Remove FIXME comment. Win32 - does know about ENOSYS after all. - (pthread_attr_setstackaddr): Likewise. - -1998-10-03 Ben Elliston <bje@cygnus.com> - - * configure.in: Test for the `_stdcall' keyword. Define `STDCALL' - to `_stdcall' if we have it, null otherwise. - - * configure: Regenerate. - - * acconfig.h (STDCALL): New define. - - * config.h.in: Regenerate. - - * create.c (ptw32_start_call): Add STDCALL prefix. - - * mutex.c (pthread_mutex_init): Correct function signature. - - * attr.c (pthread_attr_init): Only zero out the `sigmask' member - if we have the sigset_t type. - - * pthread.h: No need to include <unistd.h>. It doesn't even exist - on Win32! Again, an artifact of cross-compilation. - (pthread_sigmask): Only provide if we have the sigset_t type. - - * process.h: Remove. This was a stand-in before we started doing - native compilation under Win32. - - * pthread.h (pthread_mutex_init): Make `attr' argument const. - -1998-10-02 Ben Elliston <bje@cygnus.com> - - * COPYING: Remove. - - * COPYING.LIB: Add. This library is under the LGPL. - -1998-09-13 Ben Elliston <bje@cygnus.com> - - * configure.in: Test for required system features. - - * configure: Generate. - - * acconfig.h: New file. - - * config.h.in: Generate. - - * Makefile.in: Renamed from Makefile. - - * COPYING: Import from a recent GNU package. - - * config.guess: Likewise. - - * config.sub: Likewise. - - * install-sh: Likewise. - - * config.h: Remove. - - * Makefile: Likewise. - -1998-09-12 Ben Elliston <bje@cygnus.com> - - * windows.h: No longer needed; remove. - - * windows.c: Likewise. - -Sat Sep 12 20:09:24 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * windows.h: Remove error number definitions. These are in <errno.h> - - * tsd.c: Add comment explaining rationale for not building - POSIX TSD on top of Win32 TLS. - -1998-09-12 Ben Elliston <bje@cygnus.com> - - * {most}.c: Include <errno.h> to get POSIX error values. - - * signal.c (pthread_sigmask): Only provide if HAVE_SIGSET_T is - defined. - - * config.h: #undef features, don't #define them. This will be - generated by autoconf very soon. - -1998-08-11 Ben Elliston <bje@cygnus.com> - - * Makefile (LIB): Define. - (clean): Define target. - (all): Build a library not just the object files. - - * pthread.h: Provide a definition for struct timespec if we don't - already have one. - - * windows.c (TlsGetValue): Bug fix. - -Thu Aug 6 15:19:22 1998 Ross Johnson <rpj@swan.canberra.edu.au> - - * misc.c (pthread_once): Fix arg 1 of EnterCriticalSection() - and LeaveCriticalSection() calls to pass address-of lock. - - * fork.c (pthread_atfork): Typecast (void (*)(void *)) funcptr - in each ptw32_handler_push() call. - - * exit.c (ptw32_exit): Fix attr arg in - pthread_attr_getdetachstate() call. - - * private.c (ptw32_new_thread): Typecast (HANDLE) NULL. - (ptw32_delete_thread): Ditto. - - * implement.h: (PTW32_MAX_THREADS): Add define. This keeps - changing in an attempt to make thread administration data types - opaque and cleanup DLL startup. - - * dll.c (PthreadsEntryPoint): - (ptw32_virgins): Remove malloc() and free() calls. - (ptw32_reuse): Ditto. - (ptw32_win32handle_map): Ditto. - (ptw32_threads_mutex_table): Ditto. - - * global.c (_POSIX_THREAD_THREADS_MAX): Initialise with - PTW32_MAX_THREADS. - (ptw32_virgins): Ditto. - (ptw32_reuse): Ditto. - (ptw32_win32handle_map): Ditto. - (ptw32_threads_mutex_table): Ditto. - - * create.c (pthread_create): Typecast (HANDLE) NULL. - Typecast (unsigned (*)(void *)) start_routine. - - * condvar.c (pthread_cond_init): Add address-of operator & to - arg 1 of pthread_mutex_init() call. - (pthread_cond_destroy): Add address-of operator & to - arg 1 of pthread_mutex_destroy() call. - - * cleanup.c (ptw32_destructor_pop_all): Add (int) cast to - pthread_getspecific() arg. - (ptw32_destructor_pop): Add (void *) cast to "if" conditional. - (ptw32_destructor_push): Add (void *) cast to - ptw32_handler_push() "key" arg. - (malloc.h): Add include. - - * implement.h (ptw32_destructor_pop): Add prototype. - - * tsd.c (implement.h): Add include. - - * sync.c (pthread_join): Remove target_thread_mutex and it's - initialisation. Rename getdetachedstate to getdetachstate. - Remove unused variable "exitcode". - (pthread_detach): Remove target_thread_mutex and it's - initialisation. Rename getdetachedstate to getdetachstate. - Rename setdetachedstate to setdetachstate. - - * signal.c (pthread_sigmask): Rename SIG_SET to SIG_SETMASK. - Cast "set" to (long *) in assignment to passify compiler warning. - Add address-of operator & to thread->attr.sigmask in memcpy() call - and assignment. - (pthread_sigmask): Add address-of operator & to thread->attr.sigmask - in memcpy() call and assignment. - - * windows.h (THREAD_PRIORITY_ERROR_RETURN): Add. - (THREAD_PRIORITY_LOWEST): Add. - (THREAD_PRIORITY_HIGHEST): Add. - - * sched.c (is_attr): Add function. - (implement.h): Add include. - (pthread_setschedparam): Rename all instances of "sched_policy" - to "sched_priority". - (pthread_getschedparam): Ditto. - -Tue Aug 4 16:57:58 1998 Ross Johnson <rpj@swan.canberra.edu.au> - - * private.c (ptw32_delete_thread): Fix typo. Add missing ';'. - - * global.c (ptw32_virgins): Change types from pointer to - array pointer. - (ptw32_reuse): Ditto. - (ptw32_win32handle_map): Ditto. - (ptw32_threads_mutex_table): Ditto. - - * implement.h(ptw32_virgins): Change types from pointer to - array pointer. - (ptw32_reuse): Ditto. - (ptw32_win32handle_map): Ditto. - (ptw32_threads_mutex_table): Ditto. - - * private.c (ptw32_delete_thread): Fix "entry" should be "thread". - - * misc.c (pthread_self): Add extern for ptw32_threadID_TlsIndex. - - * global.c: Add comment. - - * misc.c (pthread_once): Fix member -> dereferences. - Change ptw32_once_flag to once_control->flag in "if" test. - -Tue Aug 4 00:09:30 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h(ptw32_virgins): Add extern. - (ptw32_virgin_next): Ditto. - (ptw32_reuse): Ditto. - (ptw32_reuse_top): Ditto. - (ptw32_win32handle_map): Ditto. - (ptw32_threads_mutex_table): Ditto. - - * global.c (ptw32_virgins): Changed from array to pointer. - Storage allocation for the array moved into dll.c. - (ptw32_reuse): Ditto. - (ptw32_win32handle_map): Ditto. - (ptw32_threads_mutex_table): Ditto. - - * dll.c (PthreadsEntryPoint): Set up thread admin storage when - DLL is loaded. - - * fork.c (pthread_atfork): Fix function pointer arg to all - ptw32_handler_push() calls. Change "arg" arg to NULL in child push. - - * exit.c: Add windows.h and process.h includes. - (ptw32_exit): Add local detachstate declaration. - (ptw32_exit): Fix incorrect name for pthread_attr_getdetachstate(). - - * pthread.h (_POSIX_THREAD_ATTR_STACKSIZE): Move from global.c - (_POSIX_THREAD_ATTR_STACKADDR): Ditto. - - * create.c (pthread_create): Fix #if should be #ifdef. - (ptw32_start_call): Remove usused variables. - - * process.h: Create. - - * windows.h: Move _beginthreadex and _endthreadex into - process.h - -Mon Aug 3 21:19:57 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * condvar.c (pthread_cond_init): Add NULL attr to - pthread_mutex_init() call - default attributes will be used. - (cond_wait): Fix typo. - (cond_wait): Fix typo - cv was ev. - (pthread_cond_broadcast): Fix two identical typos. - - * cleanup.c (ptw32_destructor_pop_all): Remove _ prefix from - PTHREAD_DESTRUCTOR_ITERATIONS. - - * pthread.h: Move _POSIX_* values into posix.h - - * pthread.h: Fix typo in pthread_mutex_init() prototype. - - * attr.c (pthread_attr_init): Fix error in priority member init. - - * windows.h (THREAD_PRIORITY_NORMAL): Add. - - * pthread.h (sched_param): Add missing ';' to struct definition. - - * attr.c (pthread_attr_init): Remove obsolete pthread_attr_t - member initialisation - cancelstate, canceltype, cancel_pending. - (is_attr): Make arg "attr" a const. - - * implement.h (PTW32_HANDLER_POP_LIFO): Remove definition. - (PTW32_HANDLER_POP_FIFO): Ditto. - (PTW32_VALID): Add missing newline escape (\). - (ptw32_handler_node): Make element "next" a pointer. - -1998-08-02 Ben Elliston <bje@cygnus.com> - - * windows.h: Remove duplicate TlsSetValue() prototype. Add - TlsGetValue() prototype. - (FALSE): Define. - (TRUE): Likewise. - Add forgotten errno values. Guard against multiple #includes. - - * windows.c: New file. Implement stubs for Win32 functions. - - * Makefile (SRCS): Remove. Not explicitly needed. - (CFLAGS): Add -Wall for all warnings with GCC. - -Sun Aug 2 19:03:42 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * config.h: Create. This is a temporary stand-in for autoconf yet - to be done. - (HAVE_SIGNAL_H): Add. - - * pthread.h: Minor rearrangement for temporary config.h. - -Fri Jul 31 14:00:29 1998 Ross Johnson <rpj@swan.canberra.edu.au> - - * cleanup.c (ptw32_destructor_pop): Implement. Removes - destructors associated with a key without executing them. - (ptw32_destructor_pop_all): Add FIXME comment. - - * tsd.c (pthread_key_delete): Add call to ptw32_destructor_pop(). - -Fri Jul 31 00:05:45 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * tsd.c (pthread_key_create): Update to properly associate - the destructor routine with the key. - (pthread_key_delete): Add FIXME comment. - - * exit.c (ptw32_vacuum): Add call to - ptw32_destructor_pop_all(). - - * implement.h (ptw32_handler_pop_all): Add prototype. - (ptw32_destructor_pop_all): Ditto. - - * cleanup.c (ptw32_destructor_push): Implement. This is just a - call to ptw32_handler_push(). - (ptw32_destructor_pop_all): Implement. This is significantly - different to ptw32_handler_pop_all(). - - * Makefile (SRCS): Create. Preliminary. - - * windows.h: Create. Contains Win32 definitions for compile - testing. This is just a standin for the real one. - - * pthread.h (SIG_UNBLOCK): Fix typo. Was SIG_BLOCK. - (windows.h): Add include. Required for CRITICAL_SECTION. - (pthread_cond_t): Move enum declaration outside of struct - definition. - (unistd.h): Add include - may be temporary. - - * condvar.c (windows.h): Add include. - - * implement.h (PTW32_THIS): Remove - no longer required. - (PTW32_STACK): Use pthread_self() instead of PTW32_THIS. - -Thu Jul 30 23:12:45 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h: Remove ptw32_find_entry() prototype. - - * private.c: Extend comments. - Remove ptw32_find_entry() - no longer needed. - - * create.c (ptw32_start_call): Add call to TlsSetValue() to - store the thread ID. - - * dll.c (PthreadsEntryPoint): Implement. This is called - whenever a process loads the DLL. Used to initialise thread - local storage. - - * implement.h: Add ptw32_threadID_TlsIndex. - Add ()s around PTW32_VALID expression. - - * misc.c (pthread_self): Re-implement using Win32 TLS to store - the threads own ID. - -Wed Jul 29 11:39:03 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * private.c: Corrections in comments. - (ptw32_new_thread): Alter "if" flow to be more natural. - - * cleanup.c (ptw32_handler_push): Same as below. - - * create.c (pthread_create): Same as below. - - * private.c (ptw32_new_thread): Rename "new" to "new_thread". - Since when has a C programmer been required to know C++? - -Tue Jul 28 14:04:29 1998 Ross Johnson <rpj@swan.canberra.edu.au> - - * implement.h: Add PTW32_VALID macro. - - * sync.c (pthread_join): Modify to use the new thread - type and ptw32_delete_thread(). Rename "target" to "thread". - Remove extra local variable "target". - (pthread_detach): Ditto. - - * signal.c (pthread_sigmask): Move init of "us" out of inner block. - Fix instance of "this" should have been "us". Rename "us" to "thread". - - * sched.c (pthread_setschedparam): Modify to use the new thread - type. - (pthread_getschedparam): Ditto. - - * private.c (ptw32_find_thread): Fix return type and arg. - - * implement.h: Remove PTW32_YES and PTW32_NO. - (ptw32_new_thread): Add prototype. - (ptw32_find_thread): Ditto. - (ptw32_delete_thread): Ditto. - (ptw32_new_thread_entry): Remove prototype. - (ptw32_find_thread_entry): Ditto. - (ptw32_delete_thread_entry): Ditto. - ( PTW32_NEW, PTW32_INUSE, PTW32_EXITED, PTW32_REUSE): - Add. - - - * create.c (pthread_create): Minor rename "us" to "new" (I need - these cues but it doesn't stop me coming out with some major bugs - at times). - Load start_routine and arg into the thread so the wrapper can - call it. - - * exit.c (pthread_exit): Fix pthread_this should be pthread_self. - - * cancel.c (pthread_setcancelstate): Change - ptw32_threads_thread_t * to pthread_t and init with - pthread_this(). - (pthread_setcanceltype): Ditto. - - * exit.c (ptw32_exit): Add new pthread_t arg. - Rename ptw32_delete_thread_entry to ptw32_delete_thread. - Rename "us" to "thread". - (pthread_exit): Call ptw32_exit with added thread arg. - - * create.c (ptw32_start_call): Insert missing ")". - Add "us" arg to ptw32_exit() call. - (pthread_create): Modify to use new thread allocation scheme. - - * private.c: Added detailed explanation of the new thread - allocation scheme. - (ptw32_new_thread): Totally rewritten to use - new thread allocation scheme. - (ptw32_delete_thread): Ditto. - (ptw32_find_thread): Obsolete. - -Mon Jul 27 17:46:37 1998 Ross Johnson <rpj@swan.canberra.edu.au> - - * create.c (pthread_create): Start of rewrite. Not completed yet. - - * private.c (ptw32_new_thread_entry): Start of rewrite. Not - complete. - - * implement.h (ptw32_threads_thread): Rename, remove thread - member, add win32handle and ptstatus members. - (ptw32_t): Add. - - * pthread.h: pthread_t is no longer mapped directly to a Win32 - HANDLE type. This is so we can let the Win32 thread terminate and - reuse the HANDLE while pthreads holds it's own thread ID until - the last waiting join exits. - -Mon Jul 27 00:20:37 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * private.c (ptw32_delete_thread_entry): Destroy the thread - entry attribute object before deleting the thread entry itself. - - * attr.c (pthread_attr_init): Initialise cancel_pending = FALSE. - (pthread_attr_setdetachstate): Rename "detached" to "detachedstate". - (pthread_attr_getdetachstate): Ditto. - - * exit.c (ptw32_exit): Fix incorrect check for detachedstate. - - * implement.h (ptw32_call_t): Remove env member. - -Sun Jul 26 13:06:12 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h (ptw32_new_thread_entry): Fix prototype. - (ptw32_find_thread_entry): Ditto. - (ptw32_delete_thread_entry): Ditto. - (ptw32_exit): Add prototype. - - * exit.c (ptw32_exit): New function. Called from pthread_exit() - and ptw32_start_call() to exit the thread. It allows an extra - argument which is the return code passed to _endthreadex(). - (ptw32_exit): Move thread entry delete call from ptw32_vacuum() - into here. Add more explanation of thread entry deletion. - (ptw32_exit): Clarify comment. - - * create.c (ptw32_start_call): Change pthread_exit() call to - ptw32_exit() call. - - * exit.c (ptw32_vacuum): Add thread entry deletion code - moved from ptw32_start_call(). See next item. - (pthread_exit): Remove longjmp(). Add mutex lock around thread table - manipulation code. This routine now calls _enthreadex(). - - * create.c (ptw32_start_call): Remove setjmp() call and move - cleanup code out. Call pthread_exit(NULL) to terminate the thread. - -1998-07-26 Ben Elliston <bje@cygnus.com> - - * tsd.c (pthread_getspecific): Update comments. - - * mutex.c (pthread_mutexattr_setpshared): Not supported; remove. - (pthread_mutexattr_getpshared): Likewise. - - * pthread.h (pthread_mutexattr_setpshared): Remove prototype. - (pthread_mutexattr_getpshared): Likewise. - -Sun Jul 26 00:09:59 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * sync.c: Rename all instances of ptw32_count_mutex to - ptw32_table_mutex. - - * implement.h: Rename ptw32_count_mutex to - ptw32_table_mutex. - - * global.c: Rename ptw32_count_mutex to - ptw32_table_mutex. - - * create.c (pthread_create): Add critical sections. - (ptw32_start_call): Rename ptw32_count_mutex to - ptw32_table_mutex. - - * cancel.c (pthread_setcancelstate): Fix indirection bug and rename - "this" to "us". - - * signal.c (pthread_sigmask): Rename "this" to "us" and fix some - minor syntax errors. Declare "us" and initialise it. - - * sync.c (pthread_detach): Rename "this" to "target". - - * pthread.h: Converting PTHREAD_* defines to alias the (const int) - values in global.c. - - * global.c: Started converting PTHREAD_* defines to (const int) as - a part of making the eventual pthreads DLL binary compatible - through version changes. - - * condvar.c (cond_wait): Add cancelation point. This applies the - point to both pthread_cond_wait() and pthread_cond_timedwait(). - - * exit.c (pthread_exit): Rename "this" to "us". - - * implement.h: Add comment. - - * sync.c (pthread_join): I've satisfied myself that pthread_detach() - does set the detached attribute in the thread entry attributes - to PTHREAD_CREATE_DETACHED. "if" conditions were changed to test - that attribute instead of a separate flag. - - * create.c (pthread_create): Rename "this" to "us". - (pthread_create): cancelstate and canceltype are not attributes - so the copy to thread entry attribute storage was removed. - Only the thread itself can change it's cancelstate or canceltype, - ie. the thread must exist already. - - * private.c (ptw32_delete_thread_entry): Mutex locks removed. - Mutexes must be applied at the caller level. - (ptw32_new_thread_entry): Ditto. - (ptw32_new_thread_entry): Init cancelstate, canceltype, and - cancel_pending to default values. - (ptw32_new_thread_entry): Rename "this" to "new". - (ptw32_find_thread_entry): Rename "this" to "entry". - (ptw32_delete_thread_entry): Rename "thread_entry" to "entry". - - * create.c (ptw32_start_call): Mutexes changed to - ptw32_count_mutex. All access to the threads table entries is - under the one mutex. Otherwise chaos reigns. - -Sat Jul 25 23:16:51 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h (ptw32_threads_thread): Move cancelstate and - canceltype members out of pthread_attr_t into here. - - * fork.c (fork): Add comment. - -1998-07-25 Ben Elliston <bje@cygnus.com> - - * fork.c (fork): Autoconfiscate. - -Sat Jul 25 00:00:13 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * create.c (ptw32_start_call): Set thread priority. Ensure our - thread entry is removed from the thread table but only if - pthread_detach() was called and there are no waiting joins. - (pthread_create): Set detach flag in thread entry if the - thread is created PTHREAD_CREATE_DETACHED. - - * pthread.h (pthread_attr_t): Rename member "detachedstate". - - * attr.c (pthread_attr_init): Rename attr members. - - * exit.c (pthread_exit): Fix indirection mistake. - - * implement.h (PTW32_THREADS_TABLE_INDEX): Add. - - * exit.c (ptw32_vacuum): Fix incorrect args to - ptw32_handler_pop_all() calls. - Make thread entry removal conditional. - - * sync.c (pthread_join): Add multiple join and async detach handling. - - * implement.h (PTW32_THREADS_TABLE_INDEX): Add. - - * global.c (ptw32_threads_mutex_table): Add. - - * implement.h (ptw32_once_flag): Remove. - (ptw32_once_lock): Ditto. - (ptw32_threads_mutex_table): Add. - - * global.c (ptw32_once_flag): Remove. - (ptw32_once_lock): Ditto. - - * sync.c (pthread_join): Fix tests involving new return value - from ptw32_find_thread_entry(). - (pthread_detach): Ditto. - - * private.c (ptw32_find_thread_entry): Failure return code - changed from -1 to NULL. - -Fri Jul 24 23:09:33 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * create.c (pthread_create): Change . to -> in sigmask memcpy() args. - - * pthread.h: (pthread_cancel): Add function prototype. - (pthread_testcancel): Ditto. - -1998-07-24 Ben Elliston <bje@cygnus.com> - - * pthread.h (pthread_condattr_t): Rename dummy structure member. - (pthread_mutexattr_t): Likewise. - -Fri Jul 24 21:13:55 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * cancel.c (pthread_cancel): Implement. - (pthread_testcancel): Implement. - - * exit.c (pthread_exit): Add comment explaining the longjmp(). - - * implement.h (ptw32_threads_thread_t): New member cancelthread. - (PTW32_YES): Define. - (PTW32_NO): Define. - (RND_SIZEOF): Remove. - - * create.c (pthread_create): Rename cancelability to cancelstate. - - * pthread.h (pthread_attr_t): Rename cancelability to cancelstate. - (PTHREAD_CANCELED): Define. - -1998-07-24 Ben Elliston <bje@cygnus.com> - - * pthread.h (SIG_BLOCK): Define if not already defined. - (SIG_UNBLOCK): Likewise. - (SIG_SETMASK): Likewise. - (pthread_attr_t): Add signal mask member. - (pthread_sigmask): Add function prototype. - - * signal.c (pthread_sigmask): Implement. - - * create.c: #include <string.h> to get a prototype for memcpy(). - (pthread_create): New threads inherit their creator's signal - mask. Copy the signal mask to the new thread structure if we know - about signals. - -Fri Jul 24 16:33:17 1998 Ross Johnson <rpj@swan.canberra.edu.au> - - * fork.c (pthread_atfork): Add all the necessary push calls. - Local implementation semantics: - If we get an ENOMEM at any time then ALL handlers - (including those from previous pthread_atfork() calls) will be - popped off each of the three atfork stacks before we return. - (fork): Add all the necessary pop calls. Add the thread cancellation - and join calls to the child fork. - Add #includes. - - * implement.h: (ptw32_handler_push): Fix return type and stack arg - type in prototype. - (ptw32_handler_pop): Fix stack arg type in prototype. - (ptw32_handler_pop_all): Fix stack arg type in prototype. - - * cleanup.c (ptw32_handler_push): Change return type to int and - return ENOMEM if malloc() fails. - - * sync.c (pthread_detach): Use equality test, not assignment. - - * create.c (ptw32_start_call): Add call to Win32 CloseHandle() - if thread is detached. - -1998-07-24 Ben Elliston <bje@cygnus.com> - - * sync.c (pthread_detach): Close the Win32 thread handle to - emulate detached (or daemon) threads. - -Fri Jul 24 03:00:25 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * sync.c (pthread_join): Save valueptr arg in joinvalueptr for - pthread_exit() to use. - - * private.c (ptw32_new_thread_entry): Initialise joinvalueptr to - NULL. - - * create.c (ptw32_start_call): Rewrite to facilitate joins. - pthread_exit() will do a longjmp() back to here. Does appropriate - cleanup and exit/return from the thread. - (pthread_create): _beginthreadex() now passes a pointer to our - thread table entry instead of just the call member of that entry. - - * implement.h (ptw32_threads_thread): New member - void ** joinvalueptr. - (ptw32_call_t): New member jmpbuf env. - - * exit.c (pthread_exit): Major rewrite to handle joins and handing - value pointer to joining thread. Uses longjmp() back to - ptw32_start_call(). - - * create.c (pthread_create): Ensure values of new attribute members - are copied to the thread attribute object. - - * attr.c (pthread_attr_destroy): Fix merge conflicts. - (pthread_attr_getdetachstate): Fix merge conflicts. - (pthread_attr_setdetachstate): Fix merge conflicts. - - * pthread.h: Fix merge conflicts. - - * sync.c (pthread_join): Fix merge conflicts. - -Fri Jul 24 00:21:21 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * sync.c (pthread_join): Add check for valid and joinable - thread. - (pthread_detach): Implement. After checking for a valid and joinable - thread, it's still a no-op. - - * private.c (ptw32_find_thread_entry): Bug prevented returning - an error value in some cases. - - * attr.c (pthread_attr_setdetachedstate): Implement. - (pthread_attr_getdetachedstate): Implement. - - * implement.h: Move more hidden definitions into here from - pthread.h. - -1998-07-24 Ben Elliston <bje@cygnus.com> - - * pthread.h (PTHREAD_CREATE_JOINABLE): Define. - (PTHREAD_CREATE_DETACHED): Likewise. - (pthread_attr_t): Add new structure member `detached'. - (pthread_attr_getdetachstate): Add function prototype. - (pthread_attr_setdetachstate): Likewise. - - * sync.c (pthread_join): Return if the target thread is detached. - - * attr.c (pthread_attr_init): Initialise cancelability and - canceltype structure members. - (pthread_attr_getdetachstate): Implement. - (pthread_attr_setdetachstate): Likewise. - - * implement.h (PTW32_CANCEL_DEFAULTS): Remove. Bit fields - proved to be too cumbersome. Set the defaults in attr.c using the - public PTHREAD_CANCEL_* constants. - - * cancel.c: New file. - - * pthread.h (sched_param): Define this type. - (pthread_attr_getschedparam): Add function prototype. - (pthread_attr_setschedparam): Likewise. - (pthread_setcancelstate): Likewise. - (pthread_setcanceltype): Likewise. - (sched_get_priority_min): Likewise. - (sched_get_priority_max): Likewise. - (pthread_mutexattr_setprotocol): Remove; not supported. - (pthread_mutexattr_getprotocol): Likewise. - (pthread_mutexattr_setprioceiling): Likewise. - (pthread_mutexattr_getprioceiling): Likewise. - (pthread_attr_t): Add canceltype member. Update comments. - (SCHED_OTHER): Define this scheduling policy constant. - (SCHED_FIFO): Likewise. - (SCHED_RR): Likewise. - (SCHED_MIN): Define the lowest possible value for this constant. - (SCHED_MAX): Likewise, the maximum possible value. - (PTHREAD_CANCEL_ASYNCHRONOUS): Redefine. - (PTHREAD_CANCEL_DEFERRED): Likewise. - - * sched.c: New file. - (pthread_setschedparam): Implement. - (pthread_getschedparam): Implement. - (sched_get_priority_max): Validate policy argument. - (sched_get_priority_min): Likewise. - - * mutex.c (pthread_mutexattr_setprotocol): Remove; not supported. - (pthread_mutexattr_getprotocol): Likewise. - (pthread_mutexattr_setprioceiling): Likewise. - (pthread_mutexattr_getprioceiling): Likewise. - -Fri Jul 24 00:21:21 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * create.c (pthread_create): Arg to ptw32_new_thread_entry() - changed. See next entry. Move mutex locks out. Changes made yesterday - and today allow us to start the new thread running rather than - temporarily suspended. - - * private.c (ptw32_new_thread_entry): ptw32_thread_table - was changed back to a table of thread structures rather than pointers. - As such we're trading storage for increaded speed. This routine - was modified to work with the new table. Mutex lock put in around - global data accesses. - (ptw32_find_thread_entry): Ditto - (ptw32_delete_thread_entry): Ditto - -Thu Jul 23 23:25:30 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * global.c: New. Global data objects declared here. These moved from - pthread.h. - - * pthread.h: Move implementation hidden definitions into - implement.h. - - * implement.h: Move implementation hidden definitions from - pthread.h. Add constants to index into the different handler stacks. - - * cleanup.c (ptw32_handler_push): Simplify args. Restructure. - (ptw32_handler_pop): Simplify args. Restructure. - (ptw32_handler_pop_all): Simplify args. Restructure. - -Wed Jul 22 00:16:22 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * attr.c, implement.h, pthread.h, ChangeLog: Resolve CVS merge - conflicts. - - * private.c (ptw32_find_thread_entry): Changes to return type - to support leaner ptw32_threads_table[] which now only stores - ptw32_thread_thread_t *. - (ptw32_new_thread_entry): Internal changes. - (ptw32_delete_thread_entry): Internal changes to avoid contention. - Calling routines changed accordingly. - - * pthread.h: Modified cleanup macros to use new generic push and pop. - Added destructor and atfork stacks to ptw32_threads_thread_t. - - * cleanup.c (ptw32_handler_push, ptw32_handler_pop, - ptw32_handler_pop_all): Renamed cleanup push and pop routines - and made generic to handle destructors and atfork handlers as - well. - - * create.c (ptw32_start_call): New function is a wrapper for - all new threads. It allows us to do some cleanup when the thread - returns, ie. that is otherwise only done if the thread is cancelled. - - * exit.c (ptw32_vacuum): New function contains code from - pthread_exit() that we need in the new ptw32_start_call() - as well. - - * implement.h: Various additions and minor changes. - - * pthread.h: Various additions and minor changes. - Change cleanup handler macros to use generic handler push and pop - functions. - - * attr.c: Minor mods to all functions. - (is_attr): Implemented missing function. - - * create.c (pthread_create): More clean up. - - * private.c (ptw32_find_thread_entry): Implement. - (ptw32_delete_thread_entry): Implement. - (ptw32_new_thread_entry): Implement. - These functions manipulate the implementations internal thread - table and are part of general code cleanup and modularisation. - They replace ptw32_getthreadindex() which was removed. - - * exit.c (pthread_exit): Changed to use the new code above. - - * pthread.h: Add cancelability constants. Update comments. - -1998-07-22 Ben Elliston <bje@cygnus.com> - - * attr.c (pthread_setstacksize): Update test of attr argument. - (pthread_getstacksize): Likewise. - (pthread_setstackaddr): Likewise. - (pthread_getstackaddr): Likewise. - (pthread_attr_init): No need to allocate any storage. - (pthread_attr_destroy): No need to free any storage. - - * mutex.c (is_attr): Not likely to be needed; remove. - (remove_attr): Likewise. - (insert_attr): Likewise. - - * implement.h (ptw32_mutexattr_t): Moved to a public definition - in pthread.h. There was little gain in hiding these details. - (ptw32_condattr_t): Likewise. - (ptw32_attr_t): Likewise. - - * pthread.h (pthread_atfork): Add function prototype. - (pthread_attr_t): Moved here from implement.h. - - * fork.c (pthread_atfork): Preliminary implementation. - (ptw32_fork): Likewise. - -Wed Jul 22 00:16:22 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * cleanup.c (ptw32_cleanup_push): Implement. - (ptw32_cleanup_pop): Implement. - (ptw32_do_cancellation): Implement. - These are private to the implementation. The real cleanup functions - are macros. See below. - - * pthread.h (pthread_cleanup_push): Implement as a macro. - (pthread_cleanup_pop): Implement as a macro. - Because these are macros which start and end a block, the POSIX scoping - requirement is observed. See the comment in the file. - - * exit.c (pthread_exit): Refine the code. - - * create.c (pthread_create): Code cleanup. - - * implement.h (RND_SIZEOF): Add RND_SIZEOF(T) to round sizeof(T) - up to multiple of DWORD. - Add function prototypes. - - * private.c (ptw32_getthreadindex): "*thread" should have been - "thread". Detect empty slot fail condition. - -1998-07-20 Ben Elliston <bje@cygnus.com> - - * misc.c (pthread_once): Implement. Don't use a per-application - flag and mutex--make `pthread_once_t' contain these elements in - their structure. The earlier version had incorrect semantics. - - * pthread.h (ptw32_once_flag): Add new variable. Remove. - (ptw32_once_lock): Add new mutex lock to ensure integrity of - access to ptw32_once_flag. Remove. - (pthread_once): Add function prototype. - (pthread_once_t): Define this type. - -Mon Jul 20 02:31:05 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * private.c (ptw32_getthreadindex): Implement. - - * pthread.h: Add application static data dependent on - _PTHREADS_BUILD_DLL define. This is needed to avoid allocating - non-sharable static data within the pthread DLL. - - * implement.h: Add ptw32_cleanup_stack_t, ptw32_cleanup_node_t - and PTW32_HASH_INDEX. - - * exit.c (pthread_exit): Begin work on cleanup and de-allocate - thread-private storage. - - * create.c (pthread_create): Add thread to thread table. - Keep a thread-private copy of the attributes with default values - filled in when necessary. Same for the cleanup stack. Make - pthread_create C run-time library friendly by using _beginthreadex() - instead of CreateThread(). Fix error returns. - -Sun Jul 19 16:26:23 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h: Rename pthreads_thread_count to ptw32_threads_count. - Create ptw32_threads_thread_t struct to keep thread specific data. - - * create.c: Rename pthreads_thread_count to ptw32_threads_count. - (pthread_create): Handle errors from CreateThread(). - -1998-07-19 Ben Elliston <bje@cygnus.com> - - * condvar.c (pthread_cond_wait): Generalise. Moved from here .. - (cond_wait): To here. - (pthread_cond_timedwait): Implement; use generalised cond_wait(). - - * pthread.h (pthread_key_t): Define this type. - (pthread_key_create): Add function prototype. - (pthread_setspecific): Likewise. - (pthread_getspecific): Likwise. - (pthread_key_delete): Likewise. - - * tsd.c (pthread_key_create): Implement. - (pthread_setspecific): Likewise. - (pthread_getspecific): Likewise. - (pthread_key_delete): Likewise. - - * mutex.c (pthread_mutex_trylock): Return ENOSYS if this function - is called on a Win32 platform which is not Windows NT. - -1998-07-18 Ben Elliston <bje@cygnus.com> - - * condvar.c (pthread_condattr_init): Do not attempt to malloc any - storage; none is needed now that condattr_t is an empty struct. - (pthread_condattr_destory): Likewise; do not free storage. - (pthread_condattr_setpshared): No longer supported; return ENOSYS. - (pthread_condattr_getpshared): Likewise. - (pthread_cond_init): Implement with help from Douglas Schmidt. - Remember to initialise the cv's internal mutex. - (pthread_cond_wait): Likewise. - (pthread_cond_signal): Likewise. - (pthread_cond_broadcast): Likewise. - (pthread_cond_timedwait): Preliminary implementation, but I need - to see some API documentation for `WaitForMultipleObject'. - (pthread_destory): Implement. - - * pthread.h (pthread_cond_init): Add function protoype. - (pthread_cond_broadcast): Likewise. - (pthread_cond_signal): Likewise. - (pthread_cond_timedwait): Likewise. - (pthread_cond_wait): Likewise. - (pthread_cond_destroy): Likewise. - (pthread_cond_t): Define this type. Fix for u_int. Do not assume - that the mutex contained withing the pthread_cond_t structure will - be a critical section. Use our new POSIX type! - - * implement.h (ptw32_condattr_t): Remove shared attribute. - -1998-07-17 Ben Elliston <bje@cygnus.com> - - * pthread.h (PTHREADS_PROCESS_PRIVATE): Remove. - (PTHREAD_PROCESS_SHARED): Likewise. No support for mutexes shared - across processes for now. - (pthread_mutex_t): Use a Win32 CRITICAL_SECTION type for better - performance. - - * implement.h (ptw32_mutexattr_t): Remove shared attribute. - - * mutex.c (pthread_mutexattr_setpshared): This optional function - is no longer supported, since we want to implement POSIX mutex - variables using the much more efficient Win32 critical section - primitives. Critical section objects in Win32 cannot be shared - between processes. - (pthread_mutexattr_getpshared): Likewise. - (pthread_mutexattr_init): No need to malloc any storage; the - attributes structure is now empty. - (pthread_mutexattr_destroy): This is now a nop. - (pthread_mutex_init): Use InitializeCriticalSection(). - (pthread_mutex_destroy): Use DeleteCriticalSection(). - (pthread_mutex_lock): Use EnterCriticalSection(). - (pthread_mutex_trylock): Use TryEnterCriticalSection(). This is - not supported by Windows 9x, but trylock is a hack anyway, IMHO. - (pthread_mutex_unlock): Use LeaveCriticalSection(). - -1998-07-14 Ben Elliston <bje@cygnus.com> - - * attr.c (pthread_attr_setstacksize): Implement. - (pthread_attr_getstacksize): Likewise. - (pthread_attr_setstackaddr): Likewise. - (pthread_attr_getstackaddr): Likewise. - (pthread_attr_init): Likewise. - (pthread_attr_destroy): Likewise. - - * condvar.c (pthread_condattr_init): Add `_cond' to function name. - - * mutex.c (pthread_mutex_lock): Add `_mutex' to function name. - (pthread_mutex_trylock): Likewise. - (pthread_mutex_unlock): Likewise. - - * pthread.h (pthread_condattr_setpshared): Fix typo. - (pthread_attr_init): Add function prototype. - (pthread_attr_destroy): Likewise. - (pthread_attr_setstacksize): Likewise. - (pthread_attr_getstacksize): Likewise. - (pthread_attr_setstackaddr): Likewise. - (pthread_attr_getstackaddr): Likewise. - -Mon Jul 13 01:09:55 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h: Wrap in #ifndef _IMPLEMENT_H - - * create.c (pthread_create): Map stacksize attr to Win32. - - * mutex.c: Include implement.h - -1998-07-13 Ben Elliston <bje@cygnus.com> - - * condvar.c (pthread_condattr_init): Implement. - (pthread_condattr_destroy): Likewise. - (pthread_condattr_setpshared): Likewise. - (pthread_condattr_getpshared): Likewise. - - * implement.h (PTHREAD_THREADS_MAX): Remove trailing semicolon. - (PTHREAD_STACK_MIN): Specify; needs confirming. - (ptw32_attr_t): Define this type. - (ptw32_condattr_t): Likewise. - - * pthread.h (pthread_mutex_t): Define this type. - (pthread_condattr_t): Likewise. - (pthread_mutex_destroy): Add function prototype. - (pthread_lock): Likewise. - (pthread_trylock): Likewise. - (pthread_unlock): Likewise. - (pthread_condattr_init): Likewise. - (pthread_condattr_destroy): Likewise. - (pthread_condattr_setpshared): Likewise. - (pthread_condattr_getpshared): Likewise. - - * mutex.c (pthread_mutex_init): Implement. - (pthread_mutex_destroy): Likewise. - (pthread_lock): Likewise. - (pthread_trylock): Likewise. - (pthread_unlock): Likewise. - -1998-07-12 Ben Elliston <bje@cygnus.com> - - * implement.h (ptw32_mutexattr_t): Define this implementation - internal type. Application programmers only see a mutex attribute - object as a void pointer. - - * pthread.h (pthread_mutexattr_t): Define this type. - (pthread_mutexattr_init): Add function prototype. - (pthread_mutexattr_destroy): Likewise. - (pthread_mutexattr_setpshared): Likewise. - (pthread_mutexattr_getpshared): Likewise. - (pthread_mutexattr_setprotocol): Likewise. - (pthread_mutexattr_getprotocol): Likewise. - (pthread_mutexattr_setprioceiling): Likewise. - (pthread_mutexattr_getprioceiling): Likewise. - (PTHREAD_PROCESS_PRIVATE): Define. - (PTHREAD_PROCESS_SHARED): Define. - - * mutex.c (pthread_mutexattr_init): Implement. - (pthread_mutexattr_destroy): Implement. - (pthread_mutexattr_setprotocol): Implement. - (pthread_mutexattr_getprotocol): Likewise. - (pthread_mutexattr_setprioceiling): Likewise. - (pthread_mutexattr_getprioceiling): Likewise. - (pthread_mutexattr_setpshared): Likewise. - (pthread_mutexattr_getpshared): Likewise. - (insert_attr): New function; very preliminary implementation! - (is_attr): Likewise. - (remove_attr): Likewise. - -Sat Jul 11 14:48:54 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au> - - * implement.h: Preliminary implementation specific defines. - - * create.c (pthread_create): Preliminary implementation. - -1998-07-11 Ben Elliston <bje@cygnus.com> - - * sync.c (pthread_join): Implement. - - * misc.c (pthread_equal): Likewise. - - * pthread.h (pthread_join): Add function prototype. - (pthread_equal): Likewise. - -1998-07-10 Ben Elliston <bje@cygnus.com> - - * misc.c (pthread_self): Implement. - - * exit.c (pthread_exit): Implement. - - * pthread.h (pthread_exit): Add function prototype. - (pthread_self): Likewise. - (pthread_t): Define this type. - -1998-07-09 Ben Elliston <bje@cygnus.com> - - * create.c (pthread_create): A dummy stub right now. - - * pthread.h (pthread_create): Add function prototype. +2002-02-23 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * Testsuite passed (except known MSVC++ problems)
+
+ * pthread_cond_destroy.c: Expand the time change
+ critical section to solve deadlock problem.
+
+ * pthread.c: Add all remaining C modules.
+ * pthread.h: Use dllexport/dllimport attributes on functions
+ to avoid using pthread.def.
+ * sched.h: Likewise.
+ * semaphore.h: Likewise.
+ * GNUmakefile: Add new targets for single translation
+ unit build to maximise inlining potential; generate
+ pthread.def automatically.
+ * Makefile: Likewise, but no longer uses pthread.def.
+
+2002-02-20 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * pthread_cond_destroy.c (pthread_cond_destroy):
+ Enter the time change critical section earlier.
+
+2002-02-17 Ross Johnson <rpj@setup1.ise.canberra.edu.au
+
+ * Testsuite passed.
+
+ * pthread_timechange_handler_np.c: New; following
+ a suggestion from Alexander Terekhov that CVs should
+ be broadcast so that they all re-evaluate their
+ condition variables and reset a new timeout if
+ required, whenever an application receives a
+ WM_TIMECHANGE message. This message indicates that
+ the system time has been changed. Therefore, CVs
+ waiting for a timeout set as an abs_time will possibly
+ not wake up at the expected time. Some applications
+ may not be tolerant of this.
+ * pthread_cond_init.c: Add CV to linked list.
+ * pthread_cond_destroy.c: Remove CV from linked list.
+ * global.c (ptw32_cond_list_head): New variable.
+ (ptw32_cond_list_tail): New variable.
+ (ptw32_cond_list_cs): New critical section.
+ * ptw32_processInitialize (ptw32_cond_list_cs): Initialize.
+ * ptw32_processTerminate (ptw32_cond_list_cs): Delete.
+
+
+ * Reduce executable size.
+ -----------------------
+ When linking with the static library, only those
+ routines actually called, either directly or indirectly
+ should be included.
+
+ [Gcc has the -ffunction-segments option to do this but MSVC
+ doesn't have this feature as far as I can determine. Other
+ compilers are undetermined as well. - rpj]
+
+ * spin.c: Split file into function segments.
+ * ptw32_spinlock_check_need_init.c: Separated routine from spin.c.
+ * pthread_spin_init.c: Likewise.
+ * pthread_spin_destroy.c: Likewise.
+ * pthread_spin_lock.c: Likewise.
+ * pthread_spin_unlock.c: Likewise.
+ * pthread_spin_trylock.c: Likewise.
+
+ * sync.c: Split file into function segments.
+ * pthread_detach.c: Separated routine from sync.c.
+ * pthread_join.c: Likewise.
+
+ * tsd.c: Split file into function segments.
+ * pthread_key_create.c: Separated routine from tsd.c.
+ * pthread_key_delete.c: Likewise.
+ * pthread_setspecific.c: Likewise.
+ * pthread_getspecific.c: Likewise.
+
+ * sched.c: Split file into function segments.
+ * pthread_attr_setschedpolicy.c: Separated routine from sched.c.
+ * pthread_attr_getschedpolicy.c: Likewise.
+ * pthread_attr_setschedparam.c: Likewise.
+ * pthread_attr_getschedparam.c: Likewise.
+ * pthread_attr_setinheritsched.c: Likewise.
+ * pthread_attr_getinheritsched.c: Likewise.
+ * pthread_setschedparam.c: Likewise.
+ * pthread_getschedparam.c: Likewise.
+ * sched_get_priority_max.c: Likewise.
+ * sched_get_priority_min.c: Likewise.
+ * sched_setscheduler.c: Likewise.
+ * sched_getscheduler.c: Likewise.
+ * sched_yield.c: Likewise.
+
+
+2002-02-16 Ross Johnson <rpj@setup1.ise.canberra.edu.au
+
+ Reduce executable size.
+ -----------------------
+ When linking with the static library, only those
+ routines actually called, either directly or indirectly
+ should be included.
+
+ [Gcc has the -ffunction-segments option to do this but MSVC
+ doesn't have this feature as far as I can determine. Other
+ compilers are undetermined as well. - rpj]
+
+ * mutex.c: Split file into function segments.
+ * pthread_mutexattr_destroy.c: Separated routine from mutex.c
+ * pthread_mutexattr_getpshared.c: Likewise.
+ * pthread_mutexattr_gettype.c: Likewise.
+ * pthread_mutexattr_init.c: Likewise.
+ * pthread_mutexattr_setpshared.c: Likewise.
+ * pthread_mutexattr_settype.c: Likewise.
+ * ptw32_mutex_check_need_init.c: Likewise.
+ * pthread_mutex_destroy.c: Likewise.
+ * pthread_mutex_init.c: Likewise.
+ * pthread_mutex_lock.c: Likewise.
+ * pthread_mutex_timedlock.c: Likewise.
+ * pthread_mutex_trylock.c: Likewise.
+ * pthread_mutex_unlock.c: Likewise.
+
+ * private.c: Split file into function segments.
+ * ptw32_InterlockedCompareExchange.c: Separated routine from private.c
+ * ptw32_callUserDestroyRoutines.c: Likewise.
+ * ptw32_getprocessors.c: Likewise.
+ * ptw32_processInitialize.c: Likewise.
+ * ptw32_processTerminate.c: Likewise.
+ * ptw32_threadDestroy.c: Likewise.
+ * ptw32_threadStart.c: Likewise.
+ * ptw32_throw.c: Likewise.
+ * ptw32_timespec.c: Likewise.
+ * ptw32_tkAssocCreate.c: Likewise.
+ * ptw32_tkAssocDestroy.c: Likewise.
+
+ * rwlock.c: Split file into function segments.
+ * pthread_rwlockattr_destroy.c: Separated routine from rwlock.c
+ * pthread_rwlockattr_getpshared.c: Likewise.
+ * pthread_rwlockattr_init.c: Likewise.
+ * pthread_rwlockattr_setpshared.c: Likewise.
+ * ptw32_rwlock_check_need_init.c: Likewise.
+ * pthread_rwlock_destroy.c: Likewise.
+ * pthread_rwlock_init.c: Likewise.
+ * pthread_rwlock_rdlock.c: Likewise.
+ * pthread_rwlock_tryrdlock.c: Likewise.
+ * pthread_rwlock_trywrlock.c: Likewise.
+ * pthread_rwlock_unlock.c: Likewise.
+ * pthread_rwlock_wrlock.c: Likewise.
+
+2002-02-10 Ross Johnson <rpj@setup1.ise.canberra.edu.au
+
+ Reduce executable size.
+ -----------------------
+ When linking with the static library, only those
+ routines actually called, either directly or indirectly
+ should be included.
+
+ [Gcc has the -ffunction-segments option to do this but MSVC
+ doesn't have this feature as far as I can determine. Other
+ compilers are undetermined as well. - rpj]
+
+ * nonportable.c: Split file into function segments.
+ * np_delay.c: Separated routine from nonportable.c
+ * np_getw32threadhandle.c: Likewise.
+ * np_mutexattr_setkind.c: Likewise.
+ * np_mutexattr_getkind.c: Likewise.
+ * np_num_processors.c: Likewise.
+ * np_win32_attach_detach.c: Likewise.
+
+ * misc.c: Split file into function segments.
+ * pthread_equal.c: Separated routine from nonportable.c.
+ * pthread_getconcurrency.c: Likewise.
+ * pthread_once.c: Likewise.
+ * pthread_self.c: Likewise.
+ * pthread_setconcurrency.c: Likewise.
+ * ptw32_calloc.c: Likewise.
+ * ptw32_new.c: Likewise.
+ * w32_CancelableWait.c: Likewise.
+
+2002-02-09 Ross Johnson <rpj@setup1.ise.canberra.edu.au
+
+ Reduce executable size.
+ -----------------------
+ When linking with the static library, only those
+ routines actually called, either directly or indirectly
+ should be included.
+
+ [Gcc has the -ffunction-segments option to do this but MSVC
+ doesn't have this feature as far as I can determine. Other
+ compilers are undetermined as well. - rpj]
+
+ * condvar.c: Split file into function segments.
+ * pthread_condattr_destroy.c: Separated routine from condvar.c.
+ * pthread_condattr_getpshared.c: Likewise.
+ * pthread_condattr_init.c: Likewise.
+ * pthread_condattr_setpshared.c: Likewise.
+ * ptw32_cond_check_need_init.c: Likewise.
+ * pthread_cond_destroy.c: Likewise.
+ * pthread_cond_init.c: Likewise.
+ * pthread_cond_signal.c: Likewise.
+ * pthread_cond_wait.c: Likewise.
+
+2002-02-07 Alexander Terekhov<TEREKHOV@de.ibm.com>
+
+ * nonportable.c (pthread_delay_np): Make a true
+ cancelation point. Deferred cancels will interrupt the
+ wait.
+
+2002-02-07 Ross Johnson <rpj@setup1.ise.canberra.edu.au
+
+ * misc.c (ptw32_new): Add creation of cancelEvent so that
+ implicit POSIX threads (Win32 threads with a POSIX face)
+ are cancelable; mainly so that pthread_delay_np doesn't fail
+ if called from the main thread.
+ * create.c (pthread_create): Remove creation of cancelEvent
+ from here; now in ptw32_new().
+
+ Reduce executable size.
+ -----------------------
+ When linking with the static library, only those
+ routines actually called, either directly or indirectly
+ should be included.
+
+ [Gcc has the -ffunction-segments option to do this but MSVC
+ doesn't have this feature as far as I can determine. Other
+ compilers are undetermined as well. - rpj]
+
+ * barrier.c: All routines are now in separate compilation units;
+ This file is used to congregate the separate modules for
+ potential inline optimisation and backward build compatibility.
+ * cancel.c: Likewise.
+ * pthread_barrierattr_destroy.c: Separated routine from cancel.c.
+ * pthread_barrierattr_getpshared.c: Likewise.
+ * pthread_barrierattr_init.c: Likewise.
+ * pthread_barrierattr_setpshared.c: Likewise.
+ * pthread_barrier_destroy.c: Likewise.
+ * pthread_barrier_init.c: Likewise.
+ * pthread_barrier_wait.c: Likewise.
+ * pthread_cancel.c: Likewise.
+ * pthread_setcancelstate.c: Likewise.
+ * pthread_setcanceltype.c: Likewise.
+ * pthread_testcancel.c: Likewise.
+
+2002-02-04 Max Woodbury <mtew@cds.duke.edu>
+
+ Reduced name space pollution.
+ -----------------------------
+ When the appropriate symbols are defined, the headers
+ will restrict the definitions of new names. In particular,
+ it must be possible to NOT include the <windows.h>
+ header and related definitions with some combination
+ of symbol definitions. Secondly, it should be possible
+ that additional definitions should be limited to POSIX
+ compliant symbols by the definition of appropriate symbols.
+
+ * pthread.h: POSIX conditionals.
+ * sched.h: POSIX conditionals.
+ * semaphore.h: POSIX conditionals.
+
+ * semaphore.c: Included <limits.h>.
+ (sem_init): Changed magic 0x7FFFFFFFL to INT_MAX.
+ (sem_getvalue): Trial version.
+
+ Reduce executable size.
+ -----------------------
+ When linking with the static library, only those
+ routines actually called, either directly or indirectly
+ should be included.
+
+ [Gcc has the -ffunction-segments option to do this but MSVC
+ doesn't have this feature as far as I can determine. Other
+ compilers are undetermined as well. - rpj]
+
+ * semaphore.c: All routines are now in separate compilation units;
+ This file is used to congregate the separate modules for
+ potential inline optimisation and backward build compatibility.
+ * sem_close.c: Separated routine from semaphore.c.
+ * ptw32_decrease_semaphore.c: Likewise.
+ * sem_destroy.c: Likewise.
+ * sem_getvalue.c: Likewise.
+ * ptw32_increase_semaphore.c: Likewise.
+ * sem_init.c: Likewise.
+ * sem_open.c: Likewise.
+ * sem_post.c: Likewise.
+ * sem_post_multiple.c: Likewise.
+ * sem_timedwait.c: Likewise.
+ * sem_trywait.c: Likewise.
+ * sem_unlink.c: Likewise.
+ * sem_wait.c: Likewise.
+
+2002-02-04 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ The following extends the idea above to the rest of pthreads-win32 - rpj
+
+ * attr.c: All routines are now in separate compilation units;
+ This file is used to congregate the separate modules for
+ potential inline optimisation and backward build compatibility.
+ * pthread_attr_destroy.c: Separated routine from attr.c.
+ * pthread_attr_getdetachstate.c: Likewise.
+ * pthread_attr_getscope.c: Likewise.
+ * pthread_attr_getstackaddr.c: Likewise.
+ * pthread_attr_getstacksize.c: Likewise.
+ * pthread_attr_init.c: Likewise.
+ * pthread_attr_is_attr.c: Likewise.
+ * pthread_attr_setdetachstate.c: Likewise.
+ * pthread_attr_setscope.c: Likewise.
+ * pthread_attr_setstackaddr.c: Likewise.
+ * pthread_attr_setstacksize.c: Likewise.
+
+ * pthread.c: Agregation of agregate modules for super-inlineability.
+
+2002-02-02 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * cancel.c: Rearranged some code and introduced checks
+ to disable cancelation at the start of a thread's cancelation
+ run to prevent double cancelation. The main problem
+ arises if a thread is canceling and then receives a subsequent
+ async cancel request.
+ * private.c: Likewise.
+ * condvar.c: Place pragmas around cleanup_push/pop to turn
+ off inline optimisation (/Obn where n>0 - MSVC only). Various
+ optimisation switches in MSVC turn this on, which interferes with
+ the way that cleanup handlers are run in C++ EH and SEH
+ code. Application code compiled with inline optimisation must
+ also wrap cleanup_push/pop blocks with the pragmas, e.g.
+ #pragma inline_depth(0)
+ pthread_cleanup_push(...)
+ ...
+ pthread_cleanup_pop(...)
+ #pragma inline_depth(8)
+ * rwlock.c: Likewise.
+ * mutex.c: Remove attempts to inline some functions.
+ * signal.c: Modify misleading comment.
+
+2002-02-01 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * semaphore.c (sem_trywait): Fix missing errno return
+ for systems that define NEED_SEM (e.g. early WinCE).
+ * mutex.c (pthread_mutex_timedlock): Return ENOTSUP
+ for systems that define NEED_SEM since they don't
+ have sem_trywait().
+
+2002-01-27 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * mutex.c (pthread_mutex_timedlock): New function suggested by
+ Alexander Terekhov. The logic required to implement this
+ properly came from Alexander, with some collaboration
+ with Thomas Pfaff.
+ (pthread_mutex_unlock): Wrap the waiters check and sema
+ post in a critical section to prevent a race with
+ pthread_mutex_timedlock.
+ (ptw32_timed_semwait): New function;
+ returns a special result if the absolute timeout parameter
+ represents a time already passed when called; used by
+ pthread_mutex_timedwait(). Have deliberately not reused
+ the name "ptw32_sem_timedwait" because they are not the same
+ routine.
+ * condvar.c (ptw32_cond_timedwait): Use the new sem_timedwait()
+ instead of ptw32_sem_timedwait(), which now has a different
+ function. See previous.
+ * implement.h: Remove prototype for ptw32_sem_timedwait.
+ See next.
+ (pthread_mutex_t_): Add critical section element for access
+ to lock_idx during mutex post-timeout processing.
+ * semaphore.h (sem_timedwait): See next.
+ * semaphore.c (sem_timedwait): See next.
+ * private.c (ptw32_sem_timedwait): Move to semaphore.c
+ and rename as sem_timedwait().
+
+2002-01-18 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * sync.c (pthread_join): Was getting the exit code from the
+ calling thread rather than the joined thread if
+ defined(__MINGW32__) && !defined(__MSVCRT__).
+
+2002-01-15 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * pthread.h: Unless the build explicitly defines __CLEANUP_SEH,
+ __CLEANUP_CXX, or __CLEANUP_C, then the build defaults to
+ __CLEANUP_C style cleanup. This style uses setjmp/longjmp
+ in the cancelation and thread exit implementations and therefore
+ won't do stack unwinding if linked to applications that have it
+ (e.g. C++ apps). This is currently consistent with most/all
+ commercial Unix POSIX threads implementations.
+
+ * spin.c (pthread_spin_init): Edit renamed function call.
+ * nonportable.c (pthread_num_processors_np): New.
+ (pthread_getprocessors_np): Renamed to ptw32_getprocessors
+ and moved to private.c.
+ * private.c (pthread_getprocessors): Moved here from
+ nonportable.c.
+ * pthread.def (pthread_getprocessors_np): Removed
+ from export list.
+
+ * rwlock.c (pthread_rwlockattr_init): New.
+ (pthread_rwlockattr_destroy): New.
+ (pthread_rwlockattr_getpshared): New.
+ (pthread_rwlockattr_setpshared): New.
+
+2002-01-14 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * attr.c (pthread_attr_setscope): Fix struct pointer
+ indirection error introduced 2002-01-04.
+ (pthread_attr_getscope): Likewise.
+
+2002-01-12 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * pthread.dsp (SOURCE): Add missing source files.
+
+2002-01-08 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * mutex.c (pthread_mutex_trylock): use
+ ptw32_interlocked_compare_exchange function pointer
+ rather than ptw32_InterlockedCompareExchange() directly
+ to retain portability to non-iX86 processors,
+ e.g. WinCE etc. The pointer will point to the native
+ OS version of InterlockedCompareExchange() if the
+ OS supports it (see ChangeLog entry of 2001-10-17).
+
+2002-01-07 Thomas Pfaff <tpfaff@gmx.net>, Alexander Terekhov <TEREKHOV@de.ibm.com>
+
+ * mutex.c (pthread_mutex_init): Remove critical
+ section calls.
+ (pthread_mutex_destroy): Likewise.
+ (pthread_mutex_unlock): Likewise.
+ (pthread_mutex_trylock): Likewise; uses
+ ptw32_InterlockedCompareExchange() to avoid need for
+ critical section; library is no longer i386 compatible;
+ recursive mutexes now increment the lock count rather
+ than return EBUSY; errorcheck mutexes return EDEADLCK
+ rather than EBUSY. This behaviour is consistent with the
+ Solaris pthreads implementation.
+ * implement.h (pthread_mutex_t_): Remove critical
+ section element - no longer needed.
+
+
+2002-01-04 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * attr.c (pthread_attr_setscope): Add more error
+ checking and actually store the scope value even
+ though it's not really necessary.
+ (pthread_attr_getscope): Return stored value.
+ * implement.h (pthread_attr_t_): Add new scope element.
+ * ANNOUNCE: Fix out of date comment next to
+ pthread_attr_setscope in conformance section.
+
+2001-12-21 Alexander Terekhov <TEREKHOV@de.ibm.com>
+
+ * mutex.c (pthread_mutex_lock): Decrementing lock_idx was
+ not thread-safe.
+ (pthread_mutex_trylock): Likewise.
+
+2001-10-26 prionx@juno.com
+
+ * semaphore.c (sem_init): Fix typo and missing bracket
+ in conditionally compiled code. Only older versions of
+ WinCE require this code, hence it doesn't normally get
+ tested; somehow when sem_t reverted to an opaque struct
+ the calloc NULL check was left in the conditionally included
+ section.
+ (sem_destroy): Likewise, the calloced sem_t wasn't being freed.
+
+2001-10-25 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * GNUmakefile (libwsock32): Add to linker flags for
+ WSAGetLastError() and WSASetLastError().
+ * Makefile (wsock32.lib): Likewise.
+ * create.c: Minor mostly inert changes.
+ * implement.h (PTW32_MAX): Move into here and renamed
+ from sched.h.
+ (PTW32_MIN): Likewise.
+ * GNUmakefile (TEST_ICE): Define if testing internal
+ implementation of InterlockedCompareExchange.
+ * Makefile (TEST_ICE): Likewise.
+ * private.c (TEST_ICE): Likewise.
+
+2001-10-24 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * attr.c (pthread_attr_setstacksize): Quell warning
+ from LCC by conditionally compiling the stacksize
+ validity check. LCC correctly warns that the condition
+ (stacksize < PTHREAD_STACK_MIN) is suspicious
+ because STACK_MIN is 0 and stacksize is of type
+ size_t (or unsigned int).
+
+2001-10-17 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * barrier.c: Move _LONG and _LPLONG defines into
+ implement.h; rename to PTW32_INTERLOCKED_LONG and
+ PTW32_INTERLOCKED_LPLONG respectively.
+ * spin.c: Likewise; ptw32_interlocked_compare_exchange used
+ in place of InterlockedCompareExchange directly.
+ * global.c (ptw32_interlocked_compare_exchange): Add
+ prototype for this new routine pointer to be used when
+ InterlockedCompareExchange isn't supported by Windows.
+ * nonportable.c (pthread_win32_process_attach_np): Check for
+ support of InterlockedCompareExchange in kernel32 and assign its
+ address to ptw32_interlocked_compare_exchange if it exists, or
+ our own ix86 specific implementation ptw32_InterlockedCompareExchange.
+ *private.c (ptw32_InterlockedCompareExchange): An
+ implementation of InterlockedCompareExchange() which is
+ specific to ix86; written directly in assembler for either
+ MSVC or GNU C; needed because Windows 95 doesn't support
+ InterlockedCompareExchange().
+
+ * sched.c (sched_get_priority_min): Extend to return
+ THREAD_PRIORITY_IDLE.
+ (sched_get_priority_max): Extend to return
+ THREAD_PRIORITY_CRITICAL.
+
+2001-10-15 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * spin.c (pthread_spin_lock): PTHREAD_SPINLOCK_INITIALIZER
+ was causing a program fault.
+ (pthread_spin_init): Could have alloced memory
+ without freeing under some error conditions.
+
+ * mutex.c (pthread_mutex_init): Move memory
+ allocation of mutex struct after checking for
+ PROCESS_SHARED.
+
+2001-10-12 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * spin.c (pthread_spin_unlock): Was not returning
+ EPERM if the spinlock was not locked, for multi CPU
+ machines.
+
+2001-10-08 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * spin.c (pthread_spin_trylock): Was not returning
+ EBUSY for multi CPU machines.
+
+2001-08-24 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * condvar.c (pthread_cond_destroy): Remove cv element
+ that is no longer used.
+ * implement.h: Likewise.
+
+2001-08-23 Alexander Terekhov <TEREKHOV@de.ibm.com>
+
+ * condvar.c (pthread_cond_destroy): fix bug with
+ respect to deadlock in the case of concurrent
+ _destroy/_unblock; a condition variable can be destroyed
+ immediately after all the threads that are blocked on
+ it are awakened.
+
+2001-08-23 Phil Frisbie, Jr. <phil@hawksoft.com>
+
+ * tsd.c (pthread_getspecific): Preserve the last
+ winsock error [from WSAGetLastError()].
+
+2001-07-18 Scott McCaskill <scott@magruder.org>
+
+ * mutex.c (pthread_mutexattr_init): Return ENOMEM
+ immediately and don't dereference the NULL pointer
+ if calloc fails.
+ (pthread_mutexattr_getpshared): Don't dereference
+ a pointer that is possibly NULL.
+ * barrier.c (pthread_barrierattr_init): Likewise
+ (pthread_barrierattr_getpshared): Don't dereference
+ a pointer that is possibly NULL.
+ * condvar.c (pthread_condattr_getpshared): Don't dereference
+ a pointer that is possibly NULL.
+
+2001-07-15 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * rwlock.c (pthread_rwlock_wrlock): Is allowed to be
+ a cancelation point; re-enable deferred cancelability
+ around the CV call.
+
+2001-07-10 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * barrier.c: Still more revamping. The exclusive access
+ mutex isn't really needed so it has been removed and replaced
+ by an InterlockedDecrement(). nSerial has been removed.
+ iStep is now dual-purpose. The process shared attribute
+ is now stored in the barrier struct.
+ * implement.h (pthread_barrier_t_): Lost some/gained one
+ elements.
+ * private.c (ptw32_threadStart): Removed some comments.
+
+2001-07-10 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * barrier.c: Revamped to fix the race condition. Two alternating
+ semaphores are used instead of the PulseEvent. Also improved
+ overall throughput by returning PTHREAD_BARRIER_SERIAL_THREAD
+ to the first waking thread.
+ * implement.h (pthread_barrier_t_): Revamped.
+
+2001-07-09 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * barrier.c: Fix several bugs in all routines. Now passes
+ tests/barrier5.c which is fairly rigorous. There is still
+ a non-optimal work-around for a race condition between
+ the barrier breeched event signal and event wait. Basically
+ the last (signalling) thread to hit the barrier yields
+ to allow any other threads, which may have lost the race,
+ to complete.
+
+2001-07-07 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * barrier.c: Changed synchronisation mechanism to a
+ Win32 manual reset Event and use PulseEvent to signal
+ waiting threads. If the implementation continued to use
+ a semaphore it would require a second semaphore and
+ some management to use them alternately as barriers. A
+ single semaphore allows threads to cascade from one barrier
+ through the next, leaving some threads blocked at the first.
+ * implement.h (pthread_barrier_t_): As per above.
+ * general: Made a number of other routines inlinable.
+
+2001-07-07 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * spin.c: Revamped and working; included static initialiser.
+ Now beta level.
+ * barrier.c: Likewise.
+ * condvar.c: Macro constant change; inline auto init routine.
+ * mutex.c: Likewise.
+ * rwlock.c: Likewise.
+ * private.c: Add support for spinlock initialiser.
+ * global.c: Likewise.
+ * implement.h: Likewise.
+ * pthread.h (PTHREAD_SPINLOCK_INITIALIZER): Fix typo.
+
+2001-07-05 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * barrier.c: Remove static initialisation - irrelevent
+ for this object.
+ * pthread.h (PTHREAD_BARRIER_INITIALIZER): Removed.
+ * rwlock.c (pthread_rwlock_wrlock): This routine is
+ not a cancelation point - disable deferred
+ cancelation around call to pthread_cond_wait().
+
+2001-07-05 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * spin.c: New module implementing spin locks.
+ * barrier.c: New module implementing barriers.
+ * pthread.h (_POSIX_SPIN_LOCKS): defined.
+ (_POSIX_BARRIERS): Defined.
+ (pthread_spin_*): Defined.
+ (pthread_barrier*): Defined.
+ (PTHREAD_BARRIER_SERIAL_THREAD): Defined.
+ * implement.h (pthread_spinlock_t_): Defined.
+ (pthread_barrier_t_): Defined.
+ (pthread_barrierattr_t_): Defined.
+
+ * mutex.c (pthread_mutex_lock): Return with the error
+ if an auto-initialiser initialisation fails.
+
+ * nonportable.c (pthread_getprocessors_np): New; gets the
+ number of available processors for the current process.
+
+2001-07-03 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * pthread.h (_POSIX_READER_WRITER_LOCKS): Define it
+ if not already defined.
+
+2001-07-01 Alexander Terekhov <TEREKHOV@de.ibm.com>
+
+ * condvar.c: Fixed lost signal bug reported by Timur Aydin
+ (taydin@snet.net).
+ [RPJ (me) didn't translate the original algorithm
+ correctly.]
+ * semaphore.c: Added sem_post_multiple; this is a useful
+ routine, but it doesn't appear to be standard. For now it's
+ not an exported function.
+
+2001-06-25 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * create.c (pthread_create): Add priority inheritance
+ attributes.
+ * mutex.c (pthread_mutex_lock): Remove some overhead for
+ PTHREAD_MUTEX_NORMAL mutex types. Specifically, avoid
+ calling pthread_self() and pthread_equal() to check/set
+ the mutex owner. Introduce a new pseudo owner for this
+ type. Test results suggest increases in speed of up to
+ 90% for non-blocking locks.
+ This is the default type of mutex used internally by other
+ synchronising objects, ie. condition variables and
+ read-write locks. The test rwlock7.c shows about a
+ 30-35% speed increase over snapshot 2001-06-06. The
+ price of this is that the application developer
+ must ensure correct behaviour, or explicitly set the
+ mutex to a safer type such as PTHREAD_MUTEX_ERRORCHECK.
+ For example, PTHREAD_MUTEX_NORMAL (or PTHREAD_MUTEX_DEFAULT)
+ type mutexes will not return an error if a thread which is not
+ the owner calls pthread_mutex_unlock. The call will succeed
+ in unlocking the mutex if it is currently locked, but a
+ subsequent unlock by the true owner will then fail with EPERM.
+ This is however consistent with some other implementations.
+ (pthread_mutex_unlock): Likewise.
+ (pthread_mutex_trylock): Likewise.
+ (pthread_mutex_destroy): Likewise.
+ * attr.c (pthread_attr_init): PTHREAD_EXPLICIT_SCHED is the
+ default inheritance attribute; THREAD_PRIORITY_NORMAL is
+ the default priority for new threads.
+ * sched.c (pthread_attr_setschedpolicy): Added routine.
+ (pthread_attr_getschedpolicy): Added routine.
+ (pthread_attr_setinheritsched): Added routine.
+ (pthread_attr_getinheritsched): Added routine.
+ * pthread.h (sched_rr_set_interval): Added as a macro;
+ returns -1 with errno set to ENOSYS.
+
+2001-06-23 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ *sched.c (pthread_attr_setschedparam): Add priority range
+ check.
+ (sched_setscheduler): New function; checks for a valid
+ pid and policy; checks for permission to set information
+ in the target process; expects pid to be a Win32 process ID,
+ not a process handle; the only scheduler policy allowed is
+ SCHED_OTHER.
+ (sched_getscheduler): Likewise, but checks for permission
+ to query.
+ * pthread.h (SCHED_*): Moved to sched.h as defined in the
+ POSIX standard.
+ * sched.h (SCHED_*): Moved from pthread.h.
+ (pid_t): Defined if necessary.
+ (sched_setscheduler): Defined.
+ (sched_getscheduler): Defined.
+ * pthread.def (sched_setscheduler): Exported.
+ (sched_getscheduler): Likewise.
+
+2001-06-23 Ralf Brese <Ralf.Brese@pdb4.siemens.de>
+
+ * create.c (pthread_create): Set thread priority from
+ thread attributes.
+
+2001-06-18 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * Made organisational-only changes to UWIN additions.
+ * dll.c (dllMain): Moved UWIN process attach code
+ to pthread_win32_process_attach_np(); moved
+ instance of pthread_count to global.c.
+ * global.c (pthread_count): Moved from dll.c.
+ * nonportable.c (pthread_win32_process_attach_np):
+ Moved _UWIN code to here from dll.c.
+ * implement.h (pthread_count): Define extern int.
+ * create.c (pthread_count): Remove extern int.
+ * private.c (pthread_count): Likewise.
+ * exit.c (pthread_count): Likewise.
+
+2001-06-18 David Korn <dgk@research.att.com>
+
+ * dll.c: Added changes necessary to work with UWIN.
+ * create.c: Likewise.
+ * pthread.h: Likewise.
+ * misc.c: Likewise.
+ * exit.c: Likewise.
+ * private.c: Likewise.
+ * implement.h: Likewise.
+ There is some room at the start of struct pthread_t_
+ to implement the signal semantics in UWIN's posix.dll
+ although this is not yet complete.
+ * Nmakefile: Compatible with UWIN's Nmake utility.
+ * Nmakefile.tests: Likewise - for running the tests.
+
+2001-06-08 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * semaphore.h (sem_t): Fixed for compile and test.
+ * implement.h (sem_t_): Likewise.
+ * semaphore.c: Likewise.
+ * private.c (ptw32_sem_timedwait): Updated to use new
+ opaque sem_t.
+
+2001-06-06 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * semaphore.h (sem_t): Is now an opaque pointer;
+ moved actual definition to implement.h.
+ * implement.h (sem_t_): Move here from semaphore.h;
+ was the definition of sem_t.
+ * semaphore.c: Wherever necessary, changed use of sem
+ from that of a pointer to a pointer-pointer; added
+ extra checks for a valid sem_t; NULL sem_t when
+ it is destroyed; added extra checks when creating
+ and destroying sem_t elements in the NEED_SEM
+ code branches; changed from using a pthread_mutex_t
+ ((*sem)->mutex) to CRITICAL_SECTION ((*sem)->sem_lock_cs)
+ in NEED_SEM branches for access serialisation.
+
+2001-06-06 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * mutex.c (pthread_mutexattr_init): Remove
+ ptw32_mutex_default_kind.
+
+2001-06-05 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * nonportable.c (pthread_mutex_setdefaultkind_np):
+ Remove - should not have been included in the first place.
+ (pthread_mutex_getdefaultkind_np): Likewise.
+ * global.c (ptw32_mutex_default_kind): Likewise.
+ * mutex.c (pthread_mutex_init): Remove use of
+ ptw32_mutex_default_kind.
+ * pthread.h (pthread_mutex_setdefaultkind_np): Likewise.
+ (pthread_mutex_getdefaultkind_np): Likewise.
+ * pthread.def (pthread_mutexattr_setkind_np): Added.
+ (pthread_mutexattr_getkind_np): Likewise.
+
+ * README: Many changes that should have gone in before
+ the last snapshot.
+ * README.NONPORTABLE: New - referred to by ANNOUNCE
+ but never created; documents the non-portable routines
+ included in the library - moved from README with new
+ routines added.
+ * ANNOUNCE (pthread_mutexattr_setkind_np): Added to
+ compliance list.
+ (pthread_mutexattr_getkind_np): Likewise.
+
+2001-06-04 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * condvar.c: Add original description of the algorithm as
+ developed by Terekhov and Thomas, plus reference to
+ README.CV.
+
+2001-06-03 Alexander Terekhov <TEREKHOV@de.ibm.com>, Louis Thomas <lthomas@arbitrade.com>
+
+ * condvar.c (pthread_cond_init): Completely revamped.
+ (pthread_cond_destroy): Likewise.
+ (ptw32_cond_wait_cleanup): Likewise.
+ (ptw32_cond_timedwait): Likewise.
+ (ptw32_cond_unblock): New general signaling routine.
+ (pthread_cond_signal): Now calls ptw32_cond_unblock.
+ (pthread_cond_broadcast): Likewise.
+ * implement.h (pthread_cond_t_): Revamped.
+ * README.CV: New; explanation of the above changes.
+
+2001-05-30 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * pthread.h (rand_r): Fake using _seed argument to quell
+ compiler warning (compiler should optimise this away later).
+
+ * GNUmakefile (OPT): Leave symbolic information out of the library
+ and increase optimisation level - for smaller faster prebuilt
+ dlls.
+
+2001-05-29 Milan Gardian <Milan.Gardian@LEIBINGER.com>
+
+ * Makefile: fix typo.
+ * pthreads.h: Fix problems with stdcall/cdecl conventions, in particular
+ remove the need for PT_STDCALL everywhere; remove warning supression.
+ * (errno): Fix the longstanding "inconsistent dll linkage" problem
+ with errno; now also works with /MD debugging libs -
+ warnings emerged when compiling pthreads library with /MD (or /MDd)
+ compiler switch, instead of /MT (or /MTd) (i.e. when compiling pthreads
+ using Multithreaded DLL CRT instead of Multithreaded statically linked
+ CRT).
+ * create.c (pthread_create): Likewise; fix typo.
+ * private.c (ptw32_threadStart): Eliminate use of terminate() which doesn't
+ throw exceptions.
+ * Remove unnecessary #includes from a number of modules -
+ [I had to #include malloc.h in implement.h for gcc - rpj].
+
+2001-05-29 Thomas Pfaff <tpfaff@gmx.net>
+
+ * pthread.h (PTHREAD_MUTEX_DEFAULT): New; equivalent to
+ PTHREAD_MUTEX_DEFAULT_NP.
+ * (PTHREAD_MUTEX_NORMAL): Similarly.
+ * (PTHREAD_MUTEX_ERRORCHECK): Similarly.
+ * (PTHREAD_MUTEX_RECURSIVE): Similarly.
+ * (pthread_mutex_setdefaultkind_np): New; Linux compatibility stub
+ for pthread_mutexattr_settype.
+ * (pthread_mutexattr_getkind_np): New; Linux compatibility stub
+ for pthread_mutexattr_gettype.
+ * mutex.c (pthread_mutexattr_settype): New; allow
+ the following types of mutex:
+ PTHREAD_MUTEX_DEFAULT_NP
+ PTHREAD_MUTEX_NORMAL_NP
+ PTHREAD_MUTEX_ERRORCHECK_NP
+ PTHREAD_MUTEX_RECURSIVE_NP
+ * Note that PTHREAD_MUTEX_DEFAULT is equivalent to
+ PTHREAD_MUTEX_NORMAL - ie. mutexes should no longer
+ be recursive by default, and a thread will deadlock if it
+ tries to relock a mutex it already owns. This is inline with
+ other pthreads implementations.
+ * (pthread_mutex_lock): Process the lock request
+ according to the mutex type.
+ * (pthread_mutex_init): Eliminate use of Win32 mutexes as the
+ basis of POSIX mutexes - instead, a combination of one critical section
+ and one semaphore are used in conjunction with Win32 Interlocked* routines.
+ * (pthread_mutex_destroy): Likewise.
+ * (pthread_mutex_lock): Likewise.
+ * (pthread_mutex_trylock): Likewise.
+ * (pthread_mutex_unlock): Likewise.
+ * Use longjmp/setjmp to implement cancelation when building the library
+ using a C compiler which doesn't support exceptions, e.g. gcc -x c (note
+ that gcc -x c++ uses exceptions).
+ * Also fixed some of the same typos and eliminated PT_STDCALL as
+ Milan Gardian's patches above.
+
+2001-02-07 Alexander Terekhov <TEREKHOV@de.ibm.com>
+
+ * rwlock.c: Revamped.
+ * implement.h (pthread_rwlock_t_): Redefined.
+ This implementation does not have reader/writer starvation problem.
+ Rwlock attempts to behave more like a normal mutex with
+ races and scheduling policy determining who is more important;
+ It also supports recursive locking,
+ has less synchronization overhead (no broadcasts at all,
+ readers are not blocked on any condition variable) and seem to
+ be faster than the current implementation [W98 appears to be
+ approximately 15 percent faster at least - on top of speed increase
+ from Thomas Pfaff's changes to mutex.c - rpj].
+
+2000-12-29 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * Makefile: Back-out "for" loops which don't work.
+
+ * GNUmakefile: Remove the fake.a target; add the "realclean"
+ target; don't remove built libs under the "clean" target.
+
+ * config.h: Add a guard against multiple inclusion.
+
+ * semaphore.h: Add some defines from config.h to make
+ semaphore.h independent of config.h when building apps.
+
+ * pthread.h (_errno): Back-out previous fix until we know how to
+ fix it properly.
+
+ * implement.h (lockCount): Add missing element to pthread_mutex_t_.
+
+ * sync.c (pthread_join): Spelling fix in comment.
+
+ * private.c (ptw32_threadStart): Reset original termination
+ function (C++).
+ (ptw32_threadStart): Cleanup detached threads early in case
+ the library is statically linked.
+ (ptw32_callUserDestroyRoutines): Remove [SEH] __try block from
+ destructor call so that unhandled exceptions will be passed through
+ to the system; call terminate() from [C++] try block for the same
+ reason.
+
+ * tsd.c (pthread_getspecific): Add comment.
+
+ * mutex.c (pthread_mutex_init): Initialise new elements in
+ pthread_mutex_t.
+ (pthread_mutex_unlock): Invert "pthread_equal()" test.
+
+2000-12-28 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * semaphore.c (mode_t): Use ifndef HAVE_MODE_T to include definition.
+
+ * config.h.in (HAVE_MODE_T): Added.
+ (_UWIN): Start adding defines for the UWIN package.
+
+ * private.c (ptw32_threadStart): Unhandled exceptions are
+ now passed through to the system to deal with. This is consistent
+ with normal Windows behaviour. C++ applications may use
+ set_terminate() to override the default behaviour which is
+ to call ptw32_terminate(). Ptw32_terminate() cleans up some
+ POSIX thread stuff before calling the system default function
+ which calls abort(). The users termination function should conform
+ to standard C++ semantics which is to not return. It should
+ exit the thread (call pthread_exit()) or exit the application.
+ * private.c (ptw32_terminate): Added as the default set_terminate()
+ function. It calls the system default function after cleaning up
+ some POSIX thread stuff.
+
+ * implement.h (ptw32_try_enter_critical_section): Move
+ declaration.
+ * global.c (ptw32_try_enter_critical_section): Moved
+ from dll.c.
+ * dll.c: Move process and thread attach/detach code into
+ functions in nonportable.c.
+ * nonportable.c (pthread_win32_process_attach_np): Process
+ attach code from dll.c is now available to static linked
+ applications.
+ * nonportable.c (pthread_win32_process_detach_np): Likewise.
+ * nonportable.c (pthread_win32_thread_attach_np): Likewise.
+ * nonportable.c (pthread_win32_thread_detach_np): Likewise.
+
+ * pthread.h: Add new non-portable prototypes for static
+ linked applications.
+
+ * GNUmakefile (OPT): Increase optimisation flag and remove
+ debug info flag.
+
+ * pthread.def: Add new non-portable exports for static
+ linked applications.
+
+2000-12-11 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * FAQ: Update Answer 6 re getting a fully working
+ Mingw32 built library.
+
+2000-10-10 Steven Reddie <smr@essemer.com.au>
+
+ * misc.c (pthread_self): Restore Win32 "last error"
+ cleared by TlsGetValue() call in
+ pthread_getspecific()
+
+2000-09-20 Arthur Kantor <akantor@bexusa.com>
+
+ * mutex.c (pthread_mutex_lock): Record the owner
+ of the mutex. This requires also keeping count of
+ recursive locks ourselves rather than leaving it
+ to Win32 since we need to know when to NULL the
+ thread owner when the mutex is unlocked.
+ (pthread_mutex_trylock): Likewise.
+ (pthread_mutex_unlock): Check that the calling
+ thread owns the mutex, decrement the recursive
+ lock count, and NULL the owner if zero. Return
+ EPERM if the mutex is owned by another thread.
+ * implement.h (pthread_mutex_t_): Add ownerThread
+ and lockCount members.
+
+2000-09-13 Jef Gearhart <jgearhart@tpssys.com>
+
+ * mutex.c (pthread_mutex_init): Call
+ TryEnterCriticalSection through the pointer
+ rather than directly so that the dll can load
+ on Windows versions that can't resolve the
+ function, eg. Windows 95
+
+2000-09-09 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * pthread.h (ctime_r): Fix arg.
+
+2000-09-08 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * GNUmakefile(_WIN32_WINNT=0x400): Define in CFLAGS;
+ doesn't seem to be needed though.
+
+ * cancel.c (pthread_cancel): Must get "self" through
+ calling pthread_self() which will ensure a POSIX thread
+ struct is built for non-POSIX threads; return an error
+ if this fails
+ - Ollie Leahy <ollie@mpt.ie>
+ (pthread_setcancelstate): Likewise.
+ (pthread_setcanceltype): Likewise.
+ * misc.c (ptw32_cancelable_wait): Likewise.
+
+ * private.c (ptw32_tkAssocCreate): Remove unused #if 0
+ wrapped code.
+
+ * pthread.h (ptw32_get_exception_services_code):
+ Needed to be forward declared unconditionally.
+
+2000-09-06 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * cancel.c (pthread_cancel): If called from the main
+ thread "self" would be NULL; get "self" via pthread_self()
+ instead of directly from TLS so that an implicit
+ pthread object is created.
+
+ * misc.c (pthread_equal): Strengthen test for NULLs.
+
+2000-09-02 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * condvar.c (ptw32_cond_wait_cleanup): Ensure that all
+ waking threads check if they are the last, and notify
+ the broadcaster if so - even if an error occurs in the
+ waiter.
+
+ * semaphore.c (_decrease_semaphore): Should be
+ a call to ptw32_decrease_semaphore.
+ (_increase_semaphore): Should be a call to
+ ptw32_increase_semaphore.
+
+ * misc.c (ptw32_cancelable_wait): Renamed from
+ CancelableWait.
+ * rwlock.c (_rwlock_check*): Renamed to
+ ptw32_rwlock_check*.
+ * mutex.c (_mutex_check*): Renamed to ptw32_mutex_check*.
+ * condvar.c (cond_timed*): Renamed to ptw32_cond_timed*.
+ (_cond_check*): Renamed to ptw32_cond_check*.
+ (cond_wait_cleanup*): Rename to ptw32_cond_wait_cleanup*.
+ (ptw32_cond_timedwait): Add comments.
+
+2000-08-22 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * private.c (ptw32_throw): Fix exception test;
+ move exceptionInformation declaration.
+
+ * tsd.c (pthread_key_create): newkey wrongly declared.
+
+ * pthread.h: Fix comment block.
+
+2000-08-18 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * mutex.c (pthread_mutex_destroy): Check that the mutex isn't
+ held; invalidate the mutex as early as possible to avoid
+ contention; not perfect - FIXME!
+
+ * rwlock.c (pthread_rwlock_init): Remove redundant assignment
+ to "rw".
+ (pthread_rwlock_destroy): Invalidate the rwlock before
+ freeing up any of it's resources - to avoid contention.
+
+ * private.c (ptw32_tkAssocCreate): Change assoc->lock
+ to use a dynamically initialised mutex - only consumes
+ a W32 mutex or critical section when first used,
+ not before.
+
+ * mutex.c (pthread_mutex_init): Remove redundant assignment
+ to "mx".
+ (pthread_mutexattr_destroy): Set attribute to NULL
+ before freeing it's memory - to avoid contention.
+
+ * implement.h (PTW32_EPS_CANCEL/PTW32_EPS_EXIT):
+ Must be defined for all compilers - used as generic
+ exception selectors by ptw32_throw().
+
+ * Several: Fix typos from scripted edit session
+ yesterday.
+
+ * nonportable.c (pthread_mutexattr_setforcecs_np):
+ Moved this function from mutex.c.
+ (pthread_getw32threadhandle_np): New function to
+ return the win32 thread handle that the POSIX
+ thread is using.
+ * mutex.c (pthread_mutexattr_setforcecs_np):
+ Moved to new file "nonportable.c".
+
+ * pthread.h (PTW32_BUILD): Only redefine __except
+ and catch compiler keywords if we aren't building
+ the library (ie. PTW32_BUILD is not defined) -
+ this is safer than defining and then undefining
+ if not building the library.
+ * implement.h: Remove __except and catch undefines.
+ * Makefile (CFLAGS): Define PTW32_BUILD.
+ * GNUmakefile (CFLAGS): Define PTW32_BUILD.
+
+ * All appropriate: Change Pthread_exception* to
+ ptw32_exception* to be consistent with internal
+ identifier naming.
+
+ * private.c (ptw32_throw): New function to provide
+ a generic exception throw for all internal
+ exceptions and EH schemes.
+ (ptw32_threadStart): pthread_exit() value is now
+ returned via the thread structure exitStatus
+ element.
+ * exit.c (pthread_exit): pthread_exit() value is now
+ returned via the thread structure exitStatus
+ element.
+ * cancel.c (ptw32_cancel_self): Now uses ptw32_throw.
+ (pthread_setcancelstate): Ditto.
+ (pthread_setcanceltype): Ditto.
+ (pthread_testcancel): Ditto.
+ (pthread_cancel): Ditto.
+ * misc.c (CancelableWait): Ditto.
+ * exit.c (pthread_exit): Ditto.
+ * All applicable: Change PTW32_ prefix to
+ PTW32_ prefix to remove leading underscores
+ from private library identifiers.
+
+2000-08-17 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * All applicable: Change _pthread_ prefix to
+ ptw32_ prefix to remove leading underscores
+ from private library identifiers (single
+ and double leading underscores are reserved in the
+ ANSI C standard for compiler implementations).
+
+ * tsd.c (pthread_create_key): Initialise temporary
+ key before returning it's address to avoid race
+ conditions.
+
+2000-08-13 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * errno.c: Add _MD precompile condition; thus far
+ had no effect when using /MD compile option but I
+ thnk it should be there.
+
+ * exit.c: Add __cplusplus to various #if lines;
+ was compiling SEH code even when VC++ had
+ C++ compile options.
+
+ * private.c: ditto.
+
+ * create.c (pthread_create): Add PT_STDCALL macro to
+ function pointer arg in _beginthread().
+
+ * pthread.h: PT_STDCALL really does need to be defined
+ in both this and impliment.h; don't set it to __cdecl
+ - this macro is only used to extend function pointer
+ casting for functions that will be passed as parameters.
+ (~PThreadCleanup): add cast and group expression.
+ (_errno): Add _MD compile conditional.
+ (PtW32NoCatchWarn): Change pragma message.
+
+ * implement.h: Move and change PT_STDCALL define.
+
+ * need_errno.h: Add _MD to compilation conditional.
+
+ * GNUmakefile: Substantial rewrite for new naming
+ convention; set for nil optimisation (turn it up
+ when we have a working library build; add target
+ "fake.a" to build a libpthreadw32.a from the VC++
+ built DLL pthreadVCE.dll.
+
+ * pthread.def (LIBRARY): Don't specify in the .def
+ file - it is specified on the linker command line
+ since we now use the same .def file for variously
+ named .dlls.
+
+ * Makefile: Substantial rewrite for new naming
+ convention; default nmake target only issues a
+ help message; run nmake with specific target
+ corresponding to the EH scheme being used.
+
+ * README: Update information; add naming convention
+ explanation.
+
+ * ANNOUNCE: Update information.
+
+2000-08-12 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * pthread.h: Add compile-time message when using
+ MSC_VER compiler and C++ EH to warn application
+ programmers to use PtW32Catch instead of catch(...)
+ if they want cancelation and pthread_exit to work.
+
+ * implement.h: Remove #include <semaphore.h>; we
+ use our own local semaphore.h.
+
+2000-08-10 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * cleanup.c (pthread_pop_cleanup): Remove _pthread
+ prefix from __except and catch keywords; implement.h
+ now simply undefines ptw32__except and
+ ptw32_catch if defined; VC++ was not textually
+ substituting ptw32_catch etc back to catch as
+ it was redefined; the reason for using the prefixed
+ version was to make it clear that it was not using
+ the pthread.h redefined catch keyword.
+
+ * private.c (ptw32_threadStart): Ditto.
+ (ptw32_callUserDestroyRoutines): Ditto.
+
+ * implement.h (ptw32__except): Remove #define.
+ (ptw32_catch): Remove #define.
+
+ * GNUmakefile (pthread.a): New target to build
+ libpthread32.a from pthread.dll using dlltool.
+
+ * buildlib.bat: Duplicate cl commands with args to
+ build C++ EH version of pthread.dll; use of .bat
+ files is redundant now that nmake compatible
+ Makefile is included; used as a kludge only now.
+
+ * Makefile: Localise some macros and fix up the clean:
+ target to extend it and work properly.
+
+ * CONTRIBUTORS: Add contributors.
+
+ * ANNOUNCE: Updated.
+
+ * README: Updated.
+
+2000-08-06 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * pthread.h: Remove #warning - VC++ doesn't accept it.
+
+2000-08-05 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * pthread.h (PtW32CatchAll): Add macro. When compiling
+ applications using VC++ with C++ EH rather than SEH
+ 'PtW32CatchAll' must be used in place of any 'catch( ... )'
+ if the application wants pthread cancelation or
+ pthread_exit() to work.
+
+2000-08-03 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * pthread.h: Add a base class ptw32_exception for
+ library internal exceptions and change the "catch"
+ re-define macro to use it.
+
+2000-08-02 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * GNUmakefile (CFLAGS): Add -mthreads.
+ Add new targets to generate cpp and asm output.
+
+ * sync.c (pthread_join): Remove dead code.
+
+2000-07-25 Tristan Savatier <tristan@mpegtv.com>
+
+ * sched.c (sched_get_priority_max): Handle different WinCE and
+ Win32 priority values together.
+ (sched_get_priority_min): Ditto.
+
+2000-07-25 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * create.c (pthread_create): Force new threads to wait until
+ pthread_create has the new thread's handle; we also retain
+ a local copy of the handle for internal use until
+ pthread_create returns.
+
+ * private.c (ptw32_threadStart): Initialise ei[].
+ (ptw32_threadStart): When beginthread is used to start the
+ thread, force waiting until the creator thread had the
+ thread handle.
+
+ * cancel.c (ptw32_cancel_thread): Include context switch
+ code for defined(_X86_) environments in addition to _M_IX86.
+
+ * rwlock.c (pthread_rwlock_destroy): Assignment changed
+ to avoid compiler warning.
+
+ * private.c (ptw32_get_exception_services_code): Cast
+ NULL return value to avoid compiler warning.
+
+ * cleanup.c (pthread_pop_cleanup): Initialise "cleanup" variable
+ to avoid compiler warnings.
+
+ * misc.c (ptw32_new): Change "new" variable to "t" to avoid
+ confusion with the C++ keyword of the same name.
+
+ * condvar.c (cond_wait_cleanup): Initialise lastWaiter variable.
+ (cond_timedwait): Remove unused local variables. to avoid
+ compiler warnings.
+
+ * dll.c (dllMain): Remove 2000-07-21 change - problem
+ appears to be in pthread_create().
+
+2000-07-22 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * tsd.c (pthread_key_create): If a destructor was given
+ and the pthread_mutex_init failed, then would try to
+ reference a NULL pointer (*key); eliminate this section of
+ code by using a dynamically initialised mutex
+ (PTHREAD_MUTEX_INITIALIZER).
+
+ * tsd.c (pthread_setspecific): Return an error if
+ unable to set the value; simplify cryptic conditional.
+
+ * tsd.c (pthread_key_delete): Locking threadsLock relied
+ on mutex_lock returning an error if the key has no destructor.
+ ThreadsLock is only initialised if the key has a destructor.
+ Making this mutex a static could reduce the number of mutexes
+ used by an application since it is actually created only at
+ first use and it's often destroyed soon after.
+
+2000-07-22 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * FAQ: Added Q5 and Q6.
+
+2000-07-21 David Baggett <dmb@itasoftware.com>
+
+ * dll.c: Include resource leakage work-around. This is a
+ partial FIXME which doesn't stop all leakage. The real
+ problem needs to be found and fixed.
+
+2000-07-21 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * create.c (pthread_create): Set threadH to 0 (zero)
+ everywhere. Some assignments were using NULL. Maybe
+ it should be NULL everywhere - need to check. (I know
+ they are nearly always the same thing - but not by
+ definition.)
+
+ * misc.c (pthread_self): Try to catch NULL thread handles
+ at the point where they might be generated, even though
+ they should always be valid at this point.
+
+ * tsd.c (pthread_setspecific): return an error value if
+ pthread_self() returns NULL.
+
+ * sync.c (pthread_join): return an error value if
+ pthread_self() returns NULL.
+
+ * signal.c (pthread_sigmask): return an error value if
+ pthread_self() returns NULL.
+
+2000-03-02 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * attr.c (pthread_attr_init): Set default stacksize to zero (0)
+ rather than PTHREAD_STACK_MIN even though these are now the same.
+
+ * pthread.h (PTHREAD_STACK_MIN): Lowered to 0.
+
+2000-01-28 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * mutex.c (pthread_mutex_init): Free mutex if it has been alloced;
+ if critical sections can be used instead of Win32 mutexes, test
+ that the critical section works and return an error if not.
+
+2000-01-07 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * cleanup.c (pthread_pop_cleanup): Include SEH code only if MSC is not
+ compiling as C++.
+ (pthread_push_cleanup): Include SEH code only if MSC is not
+ compiling as C++.
+
+ * pthread.h: Include SEH code only if MSC is not
+ compiling as C++.
+
+ * implement.h: Include SEH code only if MSC is not
+ compiling as C++.
+
+ * cancel.c (ptw32_cancel_thread): Add _M_IX86 check.
+ (pthread_testcancel): Include SEH code only if MSC is not
+ compiling as C++.
+ (ptw32_cancel_self): Include SEH code only if MSC is not
+ compiling as C++.
+
+2000-01-06 Erik Hensema <erik.hensema@group2000.nl>
+
+ * Makefile: Remove inconsistencies in 'cl' args
+
+2000-01-04 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * private.c (ptw32_get_exception_services_code): New; returns
+ value of EXCEPTION_PTW32_SERVICES.
+ (ptw32_processInitialize): Remove initialisation of
+ ptw32_exception_services which is no longer needed.
+
+ * pthread.h (ptw32_exception_services): Remove extern.
+ (ptw32_get_exception_services_code): Add function prototype;
+ use this to return EXCEPTION_PTW32_SERVICES value instead of
+ using the ptw32_exception_services variable which I had
+ trouble exporting through pthread.def.
+
+ * global.c (ptw32_exception_services): Remove declaration.
+
+1999-11-22 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * implement.h: Forward declare ptw32_new();
+
+ * misc.c (ptw32_new): New; alloc and initialise a new pthread_t.
+ (pthread_self): New thread struct is generated by new routine
+ ptw32_new().
+
+ * create.c (pthread_create): New thread struct is generated
+ by new routine ptw32_new().
+
+1999-11-21 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * global.c (ptw32_exception_services): Declare new variable.
+
+ * private.c (ptw32_threadStart): Destroy thread's
+ cancelLock mutex; make 'catch' and '__except' usageimmune to
+ redfinitions in pthread.h.
+ (ptw32_processInitialize): Init new constant ptw32_exception_services.
+
+ * create.c (pthread_create): Initialise thread's cancelLock
+ mutex.
+
+ * cleanup.c (pthread_pop_cleanup): Make 'catch' and '__except'
+ usage immune to redfinition s in pthread.h.
+
+ * private.c: Ditto.
+
+ * pthread.h (catch): Redefine 'catch' so that C++ applications
+ won't catch our internal exceptions.
+ (__except): ditto for __except.
+
+ * implement.h (ptw32_catch): Define internal version
+ of 'catch' because 'catch' is redefined by pthread.h.
+ (__except): ditto for __except.
+ (struct pthread_t_): Add cancelLock mutex for async cancel
+ safety.
+
+1999-11-21 Jason Nye <jnye@nbnet.nb.ca>, Erik Hensema <erik.hensema@group2000.nl>
+
+ * cancel.c (ptw32_cancel_self): New; part of the async
+ cancellation implementation.
+ (ptw32_cancel_thread): Ditto; this function is X86
+ processor specific.
+ (pthread_setcancelstate): Add check for pending async
+ cancel request and cancel the calling thread if
+ required; add async-cancel safety lock.
+ (pthread_setcanceltype): Ditto.
+
+1999-11-13 Erik Hensema <erik.hensema@group2000.nl>
+
+ * configure.in (AC_OUTPUT): Put generated output into GNUmakefile
+ rather than Makefile. Makefile will become the MSC nmake compatible
+ version
+
+1999-11-13 John Bossom (John.Bossom@cognos.com>
+
+ * misc.c (pthread_self): Add a note about GetCurrentThread
+ returning a pseudo-handle
+
+1999-11-10 Todd Owen <towen@lucidcalm.dropbear.id.au>
+
+ * dll.c (dllMain): Free kernel32 ASAP.
+ If TryEnterCriticalSection is not being used, then free
+ the kernel32.dll handle now, rather than leaving it until
+ DLL_PROCESS_DETACH.
+
+ Note: this is not a pedantic exercise in freeing unused
+ resources! It is a work-around for a bug in Windows 95
+ (see microsoft knowledge base article, Q187684) which
+ does Bad Things when FreeLibrary is called within
+ the DLL_PROCESS_DETACH code, in certain situations.
+ Since w95 just happens to be a platform which does not
+ provide TryEnterCriticalSection, the bug will be
+ effortlessly avoided.
+
+1999-11-10 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * sync.c (pthread_join): Make it a deferred cancelation point.
+
+ * misc.c (pthread_self): Explicitly initialise implicitly
+ created thread state to default values.
+
+1999-11-05 Tristan Savatier <tristan@mpegtv.com>
+
+ * pthread.h (winsock.h): Include unconditionally.
+ (ETIMEDOUT): Change fallback value to that defined by winsock.h.
+
+ * general: Patched for portability to WinCE. The details are
+ described in the file WinCE-PORT. Follow the instructions
+ in README.WinCE to make the appropriate changes in config.h.
+
+1999-10-30 Erik Hensema <erik.hensema@group2000.nl>
+
+ * create.c (pthread_create): Explicitly initialise thread state to
+ default values.
+
+ * cancel.c (pthread_setcancelstate): Check for NULL 'oldstate'
+ for compatibility with Solaris pthreads;
+ (pthread_setcanceltype): ditto:
+
+1999-10-23 Erik Hensema <erik.hensema@group2000.nl>
+
+ * pthread.h (ctime_r): Fix incorrect argument "_tm"
+
+1999-10-21 Aurelio Medina <aureliom@crt.com>
+
+ * pthread.h (_POSIX_THREADS): Only define it if it isn't
+ already defined. Projects may need to define this on
+ the CC command line under Win32 as it doesn't have unistd.h
+
+1999-10-17 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * rwlock.c (pthread_rwlock_destroy): Add cast to remove compile
+ warning.
+
+ * condvar.c (pthread_cond_broadcast): Only release semaphores
+ if there are waiting threads.
+
+1999-10-15 Lorin Hochstein <lmh@xiphos.ca>, Peter Slacik <Peter.Slacik@tatramed.sk>
+
+ * condvar.c (cond_wait_cleanup): New static cleanup handler for
+ cond_timedwait;
+ (cond_timedwait): pthread_cleanup_push args changed;
+ canceling a thread while it's in pthread_cond_wait
+ will now decrement the waiters count and cleanup if it's the
+ last waiter.
+
+1999-10-15 Graham Dumpleton <Graham.Dumpleton@ra.pad.otc.telstra.com.au>
+
+ * condvar.c (cond_wait_cleanup): the last waiter will now reset the CV's
+ wasBroadcast flag
+
+Thu Sep 16 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * rwlock.c (pthread_rwlock_destroy): Add serialisation.
+ (_rwlock_check_need_init): Check for detroyed rwlock.
+ * rwlock.c: Check return codes from _rwlock_check_need_init();
+ modify comments; serialise access to rwlock objects during
+ operations; rename rw_mutex to rw_lock.
+ * implement.h: Rename rw_mutex to rw_lock.
+ * mutex.c (pthread_mutex_destroy): Add serialisation.
+ (_mutex_check_need_init): Check for detroyed mutex.
+ * condvar.c (pthread_cond_destroy): Add serialisation.
+ (_cond_check_need_init): Check for detroyed condvar.
+ * mutex.c: Modify comments.
+ * condvar.c: Modify comments.
+
+1999-08-10 Aurelio Medina <aureliom@crt.com>
+
+ * implement.h (pthread_rwlock_t_): Add.
+ * pthread.h (pthread_rwlock_t): Add.
+ (PTHREAD_RWLOCK_INITIALIZER): Add.
+ Add rwlock function prototypes.
+ * rwlock.c: New module.
+ * pthread.def: Add new rwlock functions.
+ * private.c (ptw32_processInitialize): initialise
+ ptw32_rwlock_test_init_lock critical section.
+ * global.c (ptw32_rwlock_test_init_lock): Add.
+
+ * mutex.c (pthread_mutex_destroy): Don't free mutex memory
+ if mutex is PTHREAD_MUTEX_INITIALIZER and has not been
+ initialised yet.
+
+1999-08-08 Milan Gardian <mg@tatramed.sk>
+
+ * mutex.c (pthread_mutex_destroy): Free mutex memory.
+
+1999-08-22 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * exit.c (pthread_exit): Fix reference to potentially
+ uninitialised pointer.
+
+1999-08-21 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * private.c (ptw32_threadStart): Apply fix of 1999-08-19
+ this time to C++ and non-trapped C versions. Ommitted to
+ do this the first time through.
+
+1999-08-19 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * private.c (ptw32_threadStart): Return exit status from
+ the application thread startup routine.
+ - Milan Gardian <mg@tatramed.sk>
+
+1999-08-18 John Bossom <john.Bossom@cognos.com>
+
+ * exit.c (pthread_exit): Put status into pthread_t->exitStatus
+ * private.c (ptw32_threadStart): Set pthread->exitStatus
+ on exit of try{} block.
+ * sync.c (pthread_join): use pthread_exitStatus value if the
+ thread exit doesn't return a value (for Mingw32 CRTDLL
+ which uses endthread instead of _endthreadex).
+
+Tue Aug 17 20:17:58 CDT 1999 Mumit Khan <khan@xraylith.wisc.edu>
+
+ * create.c (pthread_create): Add CRTDLL suppport.
+ * exit.c (pthread_exit): Likewise.
+ * private.c (ptw32_threadStart): Likewise.
+ (ptw32_threadDestroy): Likewise.
+ * sync.c (pthread_join): Likewise.
+ * tests/join1.c (main): Warn about partial support for CRTDLL.
+
+Tue Aug 17 20:00:08 1999 Mumit Khan <khan@xraylith.wisc.edu>
+
+ * Makefile.in (LD): Delete entry point.
+ * acconfig.h (STDCALL): Delete unused macro.
+ * configure.in: Remove test for STDCALL.
+ * config.h.in: Regenerate.
+ * errno.c (_errno): Fix self type.
+ * pthread.h (PT_STDCALL): Move from here to
+ * implement.h (PT_STDCALL): here.
+ (ptw32_threadStart): Fix prototype.
+ * private.c (ptw32_threadStart): Likewise.
+
+1999-08-14 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * exit.c (pthread_exit): Don't call pthread_self() but
+ get thread handle directly from TSD for efficiency.
+
+1999-08-12 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * private.c (ptw32_threadStart): ei[] only declared if _MSC_VER.
+
+ * exit.c (pthread_exit): Check for implicitly created threads
+ to avoid raising an unhandled exception.
+
+1999-07-12 Peter Slacik <Peter.Slacik@tatramed.sk>
+
+ * condvar.c (pthread_cond_destroy): Add critical section.
+ (cond_timedwait): Add critical section; check for timeout
+ waiting on semaphore.
+ (pthread_cond_broadcast): Add critical section.
+
+1999-07-09 Lorin Hochstein <lmh@xiphos.ca>, John Bossom <John.Bossom@Cognos.COM>
+
+ The problem was that cleanup handlers were not executed when
+ pthread_exit() was called.
+
+ * implement.h (pthread_t_): Add exceptionInformation element for
+ C++ per-thread exception information.
+ (general): Define and rename exceptions.
+
+1999-07-09 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * misc.c (CancelableWait): PTW32_EPS_CANCEL (SEH) and
+ ptw32_exception_cancel (C++) used to identify the exception.
+
+ * cancel.c (pthread_testcancel): PTW32_EPS_CANCEL (SEH) and
+ ptw32_exception_cancel (C++) used to identify the exception.
+
+ * exit.c (pthread_exit): throw/raise an exception to return to
+ ptw32_threadStart() to exit the thread. PTW32_EPS_EXIT (SEH)
+ and ptw32_exception_exit (C++) used to identify the exception.
+
+ * private.c (ptw32_threadStart): Add pthread_exit exception trap;
+ clean up and exit the thread directly rather than via pthread_exit().
+
+Sun May 30 00:25:02 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * semaphore.h (mode_t): Conditionally typedef it.
+
+Fri May 28 13:33:05 1999 Mark E. Armstrong <avail@pacbell.net>
+
+ * condvar.c (pthread_cond_broadcast): Fix possible memory fault
+
+Thu May 27 13:08:46 1999 Peter Slacik <Peter.Slacik@tatramed.sk>
+
+ * condvar.c (pthread_cond_broadcast): Fix logic bug
+
+Thu May 27 13:08:46 1999 Bossom, John <John.Bossom@Cognos.COM>
+
+ * condvar.c (pthread_cond_broadcast): optimise sem_post loop
+
+Fri May 14 12:13:18 1999 Mike Russo <miker@eai.com>
+
+ * attr.c (pthread_attr_setdetachstate): Fix logic bug
+
+Sat May 8 09:42:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.def (sem_open): Add.
+ (sem_close): Add.
+ (sem_unlink): Add.
+ (sem_getvalue): Add.
+
+ * FAQ (Question 3): Add.
+
+Thu Apr 8 01:16:23 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * semaphore.c (sem_open): New function; returns an error (ENOSYS).
+ (sem_close): ditto.
+ (sem_unlink): ditto.
+ (sem_getvalue): ditto.
+
+ * semaphore.h (_POSIX_SEMAPHORES): define.
+
+Wed Apr 7 14:09:52 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * errno.c (_REENTRANT || _MT): Invert condition.
+
+ * pthread.h (_errno): Conditionally include prototype.
+
+Wed Apr 7 09:37:00 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * *.c (comments): Remove individual attributions - these are
+ documented sufficiently elsewhere.
+
+ * implement.h (pthread.h): Remove extraneous include.
+
+Sun Apr 4 11:05:57 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * sched.c (sched.h): Include.
+
+ * sched.h: New file for POSIX 1b scheduling.
+
+ * pthread.h: Move opaque structures to implement.h; move sched_*
+ prototypes out and into sched.h.
+
+ * implement.h: Add opaque structures from pthread.h.
+
+ * sched.c (sched_yield): New function.
+
+ * condvar.c (ptw32_sem_*): Rename to sem_*; except for
+ ptw32_sem_timedwait which is an private function.
+
+Sat Apr 3 23:28:00 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * Makefile.in (OBJS): Add errno.o.
+
+Fri Apr 2 11:08:50 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h (ptw32_sem_*): Remove prototypes now defined in
+ semaphore.h.
+
+ * pthread.h (sempahore.h): Include.
+
+ * semaphore.h: New file for POSIX 1b semaphores.
+
+ * semaphore.c (ptw32_sem_timedwait): Moved to private.c.
+
+ * pthread.h (ptw32_sem_t): Change to sem_t.
+
+ * private.c (ptw32_sem_timedwait): Moved from semaphore.c;
+ set errno on error.
+
+ * pthread.h (pthread_t_): Add per-thread errno element.
+
+Fri Apr 2 11:08:50 1999 John Bossom <jebossom@cognos.com>
+
+ * semaphore.c (ptw32_sem_*): Change to sem_*; these functions
+ will be exported from the library; set errno on error.
+
+ * errno.c (_errno): New file. New function.
+
+Fri Mar 26 14:11:45 1999 Tor Lillqvist <tml@iki.fi>
+
+ * semaphore.c (ptw32_sem_timedwait): Check for negative
+ milliseconds.
+
+Wed Mar 24 11:32:07 1999 John Bossom <jebossom@cognos.com>
+
+ * misc.c (CancelableWait): Initialise exceptionInformation[2].
+ (pthread_self): Get a real Win32 thread handle for implicit threads.
+
+ * cancel.c (pthread_testcancel): Initialise exceptionInformation[2].
+
+ * implement.h (SE_INFORMATION): Fix values.
+
+ * private.c (ptw32_threadDestroy): Close the thread handle.
+
+Fri Mar 19 12:57:27 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * cancel.c (comments): Update and cleanup.
+
+Fri Mar 19 09:12:59 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * private.c (ptw32_threadStart): status returns PTHREAD_CANCELED.
+
+ * pthread.h (PTHREAD_CANCELED): defined.
+
+Tue Mar 16 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * all: Add GNU LGPL and Copyright and Warranty.
+
+Mon Mar 15 00:20:13 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * condvar.c (pthread_cond_init): fix possible uninitialised use
+ of cv.
+
+Sun Mar 14 21:01:59 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * condvar.c (pthread_cond_destroy): don't do full cleanup if
+ static initialised cv has never been used.
+ (cond_timedwait): check result of auto-initialisation.
+
+Thu Mar 11 09:01:48 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.h (pthread_mutex_t): revert to (pthread_mutex_t *);
+ define a value to serve as PTHREAD_MUTEX_INITIALIZER.
+ (pthread_mutex_t_): remove staticinit and valid elements.
+ (pthread_cond_t): revert to (pthread_cond_t_ *);
+ define a value to serve as PTHREAD_COND_INITIALIZER.
+ (pthread_cond_t_): remove staticinit and valid elements.
+
+ * mutex.c (pthread_mutex_t args): adjust indirection of references.
+ (all functions): check for PTHREAD_MUTEX_INITIALIZER value;
+ check for NULL (invalid).
+
+ * condvar.c (pthread_cond_t args): adjust indirection of references.
+ (all functions): check for PTHREAD_COND_INITIALIZER value;
+ check for NULL (invalid).
+
+Wed Mar 10 17:18:12 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * misc.c (CancelableWait): Undo changes from Mar 8 and 7.
+
+Mon Mar 8 11:18:59 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * misc.c (CancelableWait): Ensure cancelEvent handle is the lowest
+ indexed element in the handles array. Enhance test for abandoned
+ objects.
+
+ * pthread.h (PTHREAD_MUTEX_INITIALIZER): Trailing elements not
+ initialised are set to zero by the compiler. This avoids the
+ problem of initialising the opaque critical section element in it.
+ (PTHREAD_COND_INITIALIZER): Ditto.
+
+ * semaphore.c (ptw32_sem_timedwait): Check sem == NULL earlier.
+
+Sun Mar 7 12:31:14 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * condvar.c (pthread_cond_init): set semaphore initial value
+ to 0, not 1. cond_timedwait was returning signaled immediately.
+
+ * misc.c (CancelableWait): Place the cancel event handle first
+ in the handle table for WaitForMultipleObjects. This ensures that
+ the cancel event is recognised and acted apon if both objects
+ happen to be signaled together.
+
+ * private.c (ptw32_cond_test_init_lock): Initialise and destroy.
+
+ * implement.h (ptw32_cond_test_init_lock): Add extern.
+
+ * global.c (ptw32_cond_test_init_lock): Add declaration.
+
+ * condvar.c (pthread_cond_destroy): check for valid initialised CV;
+ flag destroyed CVs as invalid.
+ (pthread_cond_init): pthread_cond_t is no longer just a pointer.
+ This is because PTHREAD_COND_INITIALIZER needs state info to reside
+ in pthread_cond_t so that it can initialise on first use. Will work on
+ making pthread_cond_t (and other objects like it) opaque again, if
+ possible, later.
+ (cond_timedwait): add check for statically initialisation of
+ CV; initialise on first use.
+ (pthread_cond_signal): check for valid CV.
+ (pthread_cond_broadcast): check for valid CV.
+ (_cond_check_need_init): Add.
+
+ * pthread.h (PTHREAD_COND_INITIALIZER): Fix.
+ (pthread_cond_t): no longer a pointer to pthread_cond_t_.
+ (pthread_cond_t_): add 'staticinit' and 'valid' elements.
+
+Sat Mar 6 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h: Undate comments.
+
+Sun Feb 21 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.h (PTHREAD_MUTEX_INITIALIZER): missing braces around
+ cs element initialiser.
+
+1999-02-21 Ben Elliston <bje@cygnus.com>
+
+ * pthread.h (pthread_exit): The return type of this function is
+ void, not int.
+
+ * exit.c (pthread_exit): Do not return 0.
+
+Sat Feb 20 16:03:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * dll.c (DLLMain): Expand TryEnterCriticalSection support test.
+
+ * mutex.c (pthread_mutex_trylock): The check for
+ ptw32_try_enter_critical_section == NULL should have been
+ removed long ago.
+
+Fri Feb 19 16:03:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * sync.c (pthread_join): Fix pthread_equal() test.
+
+ * mutex.c (pthread_mutex_trylock): Check mutex != NULL before
+ using it.
+
+Thu Feb 18 16:17:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * misc.c (pthread_equal): Fix inverted result.
+
+ * Makefile.in: Use libpthread32.a as the name of the DLL export
+ library instead of pthread.lib.
+
+ * condvar.c (pthread_cond_init): cv could have been used unitialised;
+ initialise.
+
+ * create.c (pthread_create): parms could have been used unitialised;
+ initialise.
+
+ * pthread.h (struct pthread_once_t_): Remove redefinition.
+
+Sat Feb 13 03:03:30 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.h (struct pthread_once_t_): Replaced.
+
+ * misc.c (pthread_once): Replace with John Bossom's version;
+ has lighter weight serialisation; fixes problem of not holding
+ competing threads until after the init_routine completes.
+
+Thu Feb 11 13:34:14 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * misc.c (CancelableWait): Change C++ exception throw.
+
+ * sync.c (pthread_join): Change FIXME comment - issue resolved.
+
+Wed Feb 10 12:49:11 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * configure: Various temporary changes.
+ - Kevin Ruland <Kevin.Ruland@anheuser-busch.com>
+
+ * README: Update.
+
+ * pthread.def (pthread_attr_getstackaddr): uncomment
+ (pthread_attr_setstackaddr): uncomment
+
+Fri Feb 5 13:42:30 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * semaphore.c: Comment format changes.
+
+Thu Feb 4 10:07:28 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * global.c: Remove ptw32_exception instantiation.
+
+ * cancel.c (pthread_testcancel): Change C++ exception throw.
+
+ * implement.h: Remove extern declaration.
+
+Wed Feb 3 13:04:44 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * cleanup.c: Rename ptw32_*_cleanup() to pthread_*_cleanup().
+
+ * pthread.def: Ditto.
+
+ * pthread.h: Ditto.
+
+ * pthread.def (pthread_cleanup_push): Remove from export list;
+ the function is defined as a macro under all compilers.
+ (pthread_cleanup_pop): Ditto.
+
+ * pthread.h: Remove #if defined().
+
+Wed Feb 3 10:13:48 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * sync.c (pthread_join): Check for NULL value_ptr arg;
+ check for detached threads.
+
+Tue Feb 2 18:07:43 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * implement.h: Add #include <pthread.h>.
+ Change sem_t to ptw32_sem_t.
+
+ Various patches by Kevin Ruland <Kevin.Ruland@anheuser-busch.com>
+
+ * signal.c (pthread_sigmask): Add and modify casts.
+ Reverse LHS/RHS bitwise assignments.
+
+ * pthread.h: Remove #include <semaphore.h>.
+ (PTW32_ATTR_VALID): Add cast.
+ (struct pthread_t_): Add sigmask element.
+
+ * dll.c: Add "extern C" for DLLMain.
+ (DllMain): Add cast.
+
+ * create.c (pthread_create): Set sigmask in thread.
+
+ * condvar.c: Remove #include. Change sem_* to ptw32_sem_*.
+
+ * attr.c: Changed #include.
+
+ * Makefile.in: Additional targets and changes to build the library
+ as a DLL.
+
+Fri Jan 29 11:56:28 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * Makefile.in (OBJS): Add semaphore.o to list.
+
+ * semaphore.c (ptw32_sem_timedwait): Move from private.c.
+ Rename sem_* to ptw32_sem_*.
+
+ * pthread.h (pthread_cond_t): Change type of sem_t.
+ _POSIX_SEMAPHORES no longer defined.
+
+ * semaphore.h: Contents moved to implement.h.
+ Removed from source tree.
+
+ * implement.h: Add semaphore function prototypes and rename all
+ functions to prepend 'ptw32_'. They are
+ now private to the pthreads-win32 implementation.
+
+ * private.c: Change #warning.
+ Move ptw32_sem_timedwait() to semaphore.c.
+
+ * cleanup.c: Change #warning.
+
+ * misc.c: Remove #include <errno.h>
+
+ * pthread.def: Cleanup CVS merge conflicts.
+
+ * global.c: Ditto.
+
+ * ChangeLog: Ditto.
+
+ * cleanup.c: Ditto.
+
+Sun Jan 24 01:34:52 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * semaphore.c (sem_wait): Remove second arg to
+ pthreadCancelableWait() call.
+
+Sat Jan 23 17:36:40 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.def: Add new functions to export list.
+
+ * pthread.h (PTHREAD_MUTEX_AUTO_CS_NP): New.
+ (PTHREAD_MUTEX_FORCE_CS_NP): New.
+
+ * README: Updated.
+
+Fri Jan 22 14:31:59 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * Makefile.in (CFLAGS): Remove -fhandle-exceptions. Not needed
+ with egcs. Add -g for debugging.
+
+ * create.c (pthread_create): Replace __stdcall with PT_STDCALL
+ macro. This is a hack and must be fixed.
+
+ * misc.c (CancelableWait): Remove redundant statement.
+
+ * mutex.c (pthread_mutexattr_init): Cast calloc return value.
+
+ * misc.c (CancelableWait): Add cast.
+ (pthread_self): Add cast.
+
+ * exit.c (pthread_exit): Add cast.
+
+ * condvar.c (pthread_condattr_init): Cast calloc return value.
+
+ * cleanup.c: Reorganise conditional compilation.
+
+ * attr.c (pthread_attr_init): Remove unused 'result'.
+ Cast malloc return value.
+
+ * private.c (ptw32_callUserDestroyRoutines): Redo conditional
+ compilation.
+
+ * misc.c (CancelableWait): C++ version uses 'throw'.
+
+ * cancel.c (pthread_testcancel): Ditto.
+
+ * implement.h (class ptw32_exception): Define for C++.
+
+ * pthread.h: Fix C, C++, and Win32 SEH condition compilation
+ mayhem around pthread_cleanup_* defines. C++ version now uses John
+ Bossom's cleanup handlers.
+ (pthread_attr_t): Make 'valid' unsigned.
+ Define '_timeb' as 'timeb' for Ming32.
+ Define PT_STDCALL as nothing for Mingw32. May be temporary.
+
+ * cancel.c (pthread_testcancel): Cast return value.
+
+Wed Jan 20 09:31:28 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.h (pthread_mutexattr_t): Changed to a pointer.
+
+ * mutex.c (pthread_mutex_init): Conditionally create Win32 mutex
+ - from John Bossom's implementation.
+ (pthread_mutex_destroy): Conditionally close Win32 mutex
+ - from John Bossom's implementation.
+ (pthread_mutexattr_init): Replaced by John Bossom's version.
+ (pthread_mutexattr_destroy): Ditto.
+ (pthread_mutexattr_getpshared): New function from John Bossom's
+ implementation.
+ (pthread_mutexattr_setpshared): New function from John Bossom's
+ implementation.
+
+Tue Jan 19 18:27:42 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * pthread.h (pthreadCancelableTimedWait): New prototype.
+ (pthreadCancelableWait): Remove second argument.
+
+ * misc.c (CancelableWait): New static function is
+ pthreadCancelableWait() renamed.
+ (pthreadCancelableWait): Now just calls CancelableWait() with
+ INFINITE timeout.
+ (pthreadCancelableTimedWait): Just calls CancelableWait()
+ with passed in timeout.
+
+Tue Jan 19 18:27:42 1999 Scott Lightner <scott@curriculum.com>
+
+ * private.c (ptw32_sem_timedwait): 'abstime' arg really is
+ absolute time. Calculate relative time to wait from current
+ time before passing timeout to new routine
+ pthreadCancelableTimedWait().
+
+Tue Jan 19 10:27:39 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.h (pthread_mutexattr_setforcecs_np): New prototype.
+
+ * mutex.c (pthread_mutexattr_init): Init 'pshared' and 'forcecs'
+ attributes to 0.
+ (pthread_mutexattr_setforcecs_np): New function (not portable).
+
+ * pthread.h (pthread_mutex_t):
+ Add 'mutex' element. Set to NULL in PTHREAD_MUTEX_INITIALIZER.
+ The pthread_mutex_*() routines will try to optimise performance
+ by choosing either mutexes or critical sections as the basis
+ for pthread mutexes for each indevidual mutex.
+ (pthread_mutexattr_t_): Add 'forcecs' element.
+ Some applications may choose to force use of critical sections
+ if they know that:-
+ the mutex is PROCESS_PRIVATE and,
+ either the OS supports TryEnterCriticalSection() or
+ pthread_mutex_trylock() will never be called on the mutex.
+ This attribute will be setable via a non-portable routine.
+
+ Note: We don't yet support PROCESS_SHARED mutexes, so the
+ implementation as it stands will default to Win32 mutexes only if
+ the OS doesn't support TryEnterCriticalSection. On Win9x, and early
+ versions of NT 'forcecs' will need to be set in order to get
+ critical section based mutexes.
+
+Sun Jan 17 12:01:26 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.h (PTHREAD_MUTEX_INITIALIZER): Init new 'staticinit'
+ value to '1' and existing 'valid' value to '1'.
+
+ * global.c (ptw32_mutex_test_init_lock): Add.
+
+ * implement.h (ptw32_mutex_test_init_lock.): Add extern.
+
+ * private.c (ptw32_processInitialize): Init critical section for
+ global lock used by _mutex_check_need_init().
+ (ptw32_processTerminate): Ditto (:s/Init/Destroy/).
+
+ * dll.c (dllMain): Move call to FreeLibrary() so that it is only
+ called once when the process detaches.
+
+ * mutex.c (_mutex_check_need_init): New static function to test
+ and init PTHREAD_MUTEX_INITIALIZER mutexes. Provides serialised
+ access to the internal state of the uninitialised static mutex.
+ Called from pthread_mutex_trylock() and pthread_mutex_lock() which
+ do a quick unguarded test to check if _mutex_check_need_init()
+ needs to be called. This is safe as the test is conservative
+ and is repeated inside the guarded section of
+ _mutex_check_need_init(). Thus in all calls except the first
+ calls to lock static mutexes, the additional overhead to lock any
+ mutex is a single memory fetch and test for zero.
+
+ * pthread.h (pthread_mutex_t_): Add 'staticinit' member. Mutexes
+ initialised by PTHREAD_MUTEX_INITIALIZER aren't really initialised
+ until the first attempt to lock it. Using the 'valid'
+ flag (which flags the mutex as destroyed or not) to record this
+ information would be messy. It is possible for a statically
+ initialised mutex such as this to be destroyed before ever being
+ used.
+
+ * mutex.c (pthread_mutex_trylock): Call _mutex_check_need_init()
+ to test/init PTHREAD_MUTEX_INITIALIZER mutexes.
+ (pthread_mutex_lock): Ditto.
+ (pthread_mutex_unlock): Add check to ensure we don't try to unlock
+ an unitialised static mutex.
+ (pthread_mutex_destroy): Add check to ensure we don't try to delete
+ a critical section that we never created. Allows us to destroy
+ a static mutex that has never been locked (and hence initialised).
+ (pthread_mutex_init): Set 'staticinit' flag to 0 for the new mutex.
+
+Sun Jan 17 12:01:26 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * private.c (ptw32_sem_timedwait): Move from semaphore.c.
+
+ * semaphore.c : Remove redundant #includes.
+ (ptw32_sem_timedwait): Move to private.c.
+ (sem_wait): Add missing abstime arg to pthreadCancelableWait() call.
+
+Fri Jan 15 23:38:05 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * condvar.c (cond_timedwait): Remove comment.
+
+Fri Jan 15 15:41:28 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * pthread.h: Add new 'abstime' arg to pthreadCancelableWait()
+ prototype.
+
+ * condvar.c (cond_timedwait): New generalised function called by
+ both pthread_cond_wait() and pthread_cond_timedwait(). This is
+ essentially pthread_cond_wait() renamed and modified to add the
+ 'abstime' arg and call the new ptw32_sem_timedwait() instead of
+ sem_wait().
+ (pthread_cond_wait): Now just calls the internal static
+ function cond_timedwait() with an INFINITE wait.
+ (pthread_cond_timedwait): Now implemented. Calls the internal
+ static function cond_timedwait().
+
+ * implement.h (ptw32_sem_timedwait): New internal function
+ prototype.
+
+ * misc.c (pthreadCancelableWait): Added new 'abstime' argument
+ to allow shorter than INFINITE wait.
+
+ * semaphore.c (ptw32_sem_timedwait): New function for internal
+ use. This is essentially sem_wait() modified to add the
+ 'abstime' arg and call the modified (see above)
+ pthreadCancelableWait().
+
+Thu Jan 14 14:27:13 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * cleanup.c: Correct _cplusplus to __cplusplus wherever used.
+
+ * Makefile.in: Add CC=g++ and add -fhandle-exceptions to CFLAGS.
+ The derived Makefile will compile all units of the package as C++
+ so that those which include try/catch exception handling should work
+ properly. The package should compile ok if CC=gcc, however, exception
+ handling will not be included and thus thread cancellation, for
+ example, will not work.
+
+ * cleanup.c (ptw32_pop_cleanup): Add #warning to compile this
+ file as C++ if using a cygwin32 environment. Perhaps the whole package
+ should be compiled using g++ under cygwin.
+
+ * private.c (ptw32_threadStart): Change #error directive
+ into #warning and bracket for __CYGWIN__ and derivative compilers.
+
+Wed Jan 13 09:34:52 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * build.bat: Delete old binaries before compiling/linking.
+
+Tue Jan 12 09:58:38 1999 Tor Lillqvist <tml@iki.fi>
+
+ * dll.c: The Microsoft compiler pragmas probably are more
+ appropriately protected by _MSC_VER than by _WIN32.
+
+ * pthread.h: Define ETIMEDOUT. This should be returned by
+ pthread_cond_timedwait which is not implemented yet as of
+ snapshot-1999-01-04-1305. It was implemented in the older version.
+ The Microsoft compiler pragmas probably are more appropriately
+ protected by _MSC_VER than by _WIN32.
+
+ * pthread.def: pthread_mutex_destroy was missing from the def file
+
+ * condvar.c (pthread_cond_broadcast): Ensure we only wait on threads
+ if there were any waiting on the condition.
+ I think pthread_cond_broadcast should do the WaitForSingleObject
+ only if cv->waiters > 0? Otherwise it seems to hang, at least in the
+ testg thread program from glib.
+
+Tue Jan 12 09:58:38 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * condvar.c (pthread_cond_timedwait): Fix function description
+ comments.
+
+ * semaphore.c (sem_post): Correct typo in comment.
+
+Mon Jan 11 20:33:19 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.h: Re-arrange conditional compile of pthread_cleanup-*
+ macros.
+
+ * cleanup.c (ptw32_push_cleanup): Provide conditional
+ compile of cleanup->prev.
+
+1999-01-11 Tor Lillqvist <tml@iki.fi>
+
+ * condvar.c (pthread_cond_init): Invert logic when testing the
+ return value from calloc().
+
+Sat Jan 9 14:32:08 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h: Compile-time switch for CYGWIN derived environments
+ to use CreateThread instead of _beginthreadex. Ditto for ExitThread.
+ Patch provided by Anders Norlander <anorland@hem2.passagen.se>.
+
+Tue Jan 5 16:33:04 1999 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * cleanup.c (ptw32_pop_cleanup): Add C++ version of __try/__except
+ block. Move trailing "}" out of #ifdef _WIN32 block left there by
+ (rpj's) mistake.
+
+ * private.c: Remove #include <errno.h> which is included by pthread.h.
+
+1998-12-11 Ben Elliston <bje@toilet.to.cygnus.com>
+
+ * README: Update info about subscribing to the mailing list.
+
+Mon Jan 4 11:23:40 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * all: No code changes, just cleanup.
+ - remove #if 0 /* Pre Bossom */ enclosed code.
+ - Remove some redundant #includes.
+ * pthread.h: Update implemented/unimplemented routines list.
+ * Tag the bossom merge branch getting ready to merge back to main
+ trunk.
+
+Tue Dec 29 13:11:16 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h: Move the following struct definitions to pthread.h:
+ pthread_t_, pthread_attr_t_, pthread_mutex_t_, pthread_mutex_t_,
+ pthread_mutexattr_t_, pthread_key_t_, pthread_cond_t_,
+ pthread_condattr_t_, pthread_once_t_.
+
+ * pthread.h: Add "_" prefix to pthread_push_cleanup and
+ pthread_pop_cleanup internal routines, and associated struct and
+ typedefs.
+
+ * buildlib.bat: Add compile command for semaphore.c
+
+ * pthread.def: Comment out pthread_atfork routine name.
+ Now unimplemented.
+
+ * tsd.c (pthread_setspecific): Rename tkAssocCreate to
+ ptw32_tkAssocCreate.
+ (pthread_key_delete): Rename tkAssocDestroy to
+ ptw32_tkAssocDestroy.
+
+ * sync.c (pthread_join): Rename threadDestroy to ptw32_threadDestroy
+
+ * sched.c (is_attr): attr is now **attr (was *attr), so add extra
+ NULL pointer test.
+ (pthread_attr_setschedparam): Increase redirection for attr which is
+ now a **.
+ (pthread_attr_getschedparam): Ditto.
+ (pthread_setschedparam): Change thread validation and rename "thread"
+ Win32 thread Handle element name to match John Bossom's version.
+ (pthread_getschedparam): Ditto.
+
+ * private.c (ptw32_threadDestroy): Rename call to
+ callUserDestroyRoutines() as ptw32_callUserDestroyRoutines()
+
+ * misc.c: Add #include "implement.h".
+
+ * dll.c: Remove defined(KLUDGE) wrapped code.
+
+ * fork.c: Remove redefinition of ENOMEM.
+ Remove pthread_atfork() and fork() with #if 0/#endif.
+
+ * create.c (pthread_create): Rename threadStart and threadDestroy calls
+ to ptw32_threadStart and ptw32_threadDestroy.
+
+ * implement.h: Rename "detachedstate" to "detachstate".
+
+ * attr.c: Rename "detachedstate" to "detachstate".
+
+Mon Dec 28 09:54:39 1998 John Bossom
+
+ * semaphore.c: Initial version.
+ * semaphore.h: Initial version.
+
+Mon Dec 28 09:54:39 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.h (pthread_attr_t_): Change to *pthread_attr_t.
+
+Mon Dec 28 09:54:39 1998 John Bossom, Ben Elliston
+
+ * attr.c (pthread_attr_setstacksize): Merge with John's version.
+ (pthread_attr_getstacksize): Merge with John's version.
+ (pthread_attr_setstackaddr): Merge with John's version.
+ (pthread_attr_getstackaddr): Merge with John's version.
+ (pthread_attr_init): Merge with John's version.
+ (pthread_attr_destroy): Merge with John's version.
+ (pthread_attr_getdetachstate): Merge with John's version.
+ (pthread_attr_setdetachstate): Merge with John's version.
+ (is_attr): attr is now **attr (was *attr), so add extra NULL pointer
+ test.
+
+Mon Dec 28 09:54:39 1998 Ross Johnson
+
+ * implement.h (pthread_attr_t_): Add and rename elements in JEB's
+ version to correspond to original, so that it can be used with
+ original attr routines.
+
+ * pthread.h: Add #endif at end which was truncated in merging.
+
+Sun Dec 20 14:51:58 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * misc.c (pthreadCancelableWait): New function by John Bossom. Non-standard
+ but provides a hook that can be used to implement cancellation points in
+ applications that use this library.
+
+ * pthread.h (pthread_cleanup_pop): C++ (non-WIN32) version uses
+ try/catch to emulate John Bossom's WIN32 __try/__finally behaviour.
+ In the WIN32 version __finally block, add a test for AbnormalTermination otherwise
+ cleanup is only run if the cleanup_pop execute arg is non-zero. Cancellation
+ should cause the cleanup to run irrespective of the execute arg.
+
+ * condvar.c (pthread_condattr_init): Replaced by John Bossom's version.
+ (pthread_condattr_destroy): Replaced by John Bossom's version.
+ (pthread_condattr_getpshared): Replaced by John Bossom's version.
+ (pthread_condattr_setpshared): Replaced by John Bossom's version.
+ (pthread_cond_init): Replaced by John Bossom's version.
+ Fix comment (refered to mutex rather than condition variable).
+ (pthread_cond_destroy): Replaced by John Bossom's version.
+ (pthread_cond_wait): Replaced by John Bossom's version.
+ (pthread_cond_timedwait): Replaced by John Bossom's version.
+ (pthread_cond_signal): Replaced by John Bossom's version.
+ (pthread_cond_broadcast): Replaced by John Bossom's version.
+
+Thu Dec 17 19:10:46 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * tsd.c (pthread_key_create): Replaced by John Bossom's version.
+ (pthread_key_delete): Replaced by John Bossom's version.
+ (pthread_setspecific): Replaced by John Bossom's version.
+ (pthread_getspecific): Replaced by John Bossom's version.
+
+Mon Dec 7 09:44:40 1998 John Bossom
+
+ * cancel.c (pthread_setcancelstate): Replaced.
+ (pthread_setcanceltype): Replaced.
+ (pthread_testcancel): Replaced.
+ (pthread_cancel): Replaced.
+
+ * exit.c (pthread_exit): Replaced.
+
+ * misc.c (pthread_self): Replaced.
+ (pthread_equal): Replaced.
+
+ * sync.c (pthread_detach): Replaced.
+ (pthread_join): Replaced.
+
+ * create.c (pthread_create): Replaced.
+
+ * private.c (ptw32_processInitialize): New.
+ (ptw32_processTerminate): New.
+ (ptw32_threadStart): New.
+ (ptw32_threadDestroy): New.
+ (ptw32_cleanupStack): New.
+ (ptw32_tkAssocCreate): New.
+ (ptw32_tkAssocDestroy): New.
+ (ptw32_callUserDestroyRoutines): New.
+
+ * implement.h: Added non-API structures and declarations.
+
+ * dll.c (PthreadsEntryPoint): Cast return value of GetProcAddress
+ to resolve compile warning from MSVC.
+
+ * dll.c (DLLmain): Replaced.
+ * dll.c (PthreadsEntryPoint):
+ Re-applied Anders Norlander's patch:-
+ Initialize ptw32_try_enter_critical_section at startup
+ and release kernel32 handle when DLL is being unloaded.
+
+Sun Dec 6 21:54:35 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * buildlib.bat: Fix args to CL when building the .DLL
+
+ * cleanup.c (ptw32_destructor_run_all): Fix TSD key management.
+ This is a tidy-up before TSD and Thread management is completely
+ replaced by John Bossom's code.
+
+ * tsd.c (pthread_key_create): Fix TSD key management.
+
+ * global.c (ptw32_key_virgin_next): Initialise.
+
+ * build.bat: New DOS script to compile and link a pthreads app
+ using Microsoft's CL compiler linker.
+ * buildlib.bat: New DOS script to compile all the object files
+ and create pthread.lib and pthread.dll using Microsoft's CL
+ compiler linker.
+
+1998-12-05 Anders Norlander <anorland@hem2.passagen.se>
+
+ * implement.h (ptw32_try_enter_critical_section): New extern
+ * dll.c (ptw32_try_enter_critical_section): New pointer to
+ TryEnterCriticalSection if it exists; otherwise NULL.
+ * dll.c (PthreadsEntryPoint):
+ Initialize ptw32_try_enter_critical_section at startup
+ and release kernel32 handle when DLL is being unloaded.
+ * mutex.c (pthread_mutex_trylock): Replaced check for NT with
+ a check if ptw32_try_enter_critical_section is valid
+ pointer to a function. Call ptw32_try_enter_critical_section
+ instead of TryEnterCriticalSection to avoid errors on Win95.
+
+Thu Dec 3 13:32:00 1998 Ross Johnson <rpj@ise.canberra.edu.au>
+
+ * README: Correct cygwin32 compatibility statement.
+
+Sun Nov 15 21:24:06 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * cleanup.c (ptw32_destructor_run_all): Declare missing void * arg.
+ Fixup CVS merge conflicts.
+
+1998-10-30 Ben Elliston <bje@cygnus.com>
+
+ * condvar.c (cond_wait): Fix semantic error. Test for equality
+ instead of making an assignment.
+
+Fri Oct 30 15:15:50 1998 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * cleanup.c (ptw32_handler_push): Fixed bug appending new
+ handler to list reported by Peter Slacik
+ <Peter.Slacik@leibinger.freinet.de>.
+ (new_thread): Rename poorly named local variable to
+ "new_handler".
+
+Sat Oct 24 18:34:59 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * global.c: Add TSD key management array and index declarations.
+
+ * implement.h: Ditto for externs.
+
+Fri Oct 23 00:08:09 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h (PTW32_TSD_KEY_REUSE): Add enum.
+
+ * private.c (ptw32_delete_thread): Add call to
+ ptw32_destructor_run_all() to clean up the threads keys.
+
+ * cleanup.c (ptw32_destructor_run_all): Check for no more dirty
+ keys to run destructors on. Assume that the destructor call always
+ succeeds and set the key value to NULL.
+
+Thu Oct 22 21:44:44 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * tsd.c (pthread_setspecific): Add key management code.
+ (pthread_key_create): Ditto.
+ (pthread_key_delete): Ditto.
+
+ * implement.h (struct ptw32_tsd_key): Add status member.
+
+ * tsd.c: Add description of pthread_key_delete() from the
+ standard as a comment.
+
+Fri Oct 16 17:38:47 1998 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * cleanup.c (ptw32_destructor_run_all): Fix and improve
+ stepping through the key table.
+
+Thu Oct 15 14:05:01 1998 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * private.c (ptw32_new_thread): Remove init of destructorstack.
+ No longer an element of pthread_t.
+
+ * tsd.c (pthread_setspecific): Fix type declaration and cast.
+ (pthread_getspecific): Ditto.
+ (pthread_getspecific): Change error return value to NULL if key
+ is not in use.
+
+Thu Oct 15 11:53:21 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * global.c (ptw32_tsd_key_table): Fix declaration.
+
+ * implement.h(ptw32_TSD_keys_TlsIndex): Add missing extern.
+ (ptw32_tsd_mutex): Ditto.
+
+ * create.c (ptw32_start_call): Fix "keys" array declaration.
+ Add comment.
+
+ * tsd.c (pthread_setspecific): Fix type declaration and cast.
+ (pthread_getspecific): Ditto.
+
+ * cleanup.c (ptw32_destructor_run_all): Declare missing loop
+ counter.
+
+Wed Oct 14 21:09:24 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * private.c (ptw32_new_thread): Increment ptw32_threads_count.
+ (ptw32_delete_thread): Decrement ptw32_threads_count.
+ Remove some comments.
+
+ * exit.c (ptw32_exit): : Fix two pthread_mutex_lock() calls that
+ should have been pthread_mutex_unlock() calls.
+ (ptw32_vacuum): Remove call to ptw32_destructor_pop_all().
+
+ * create.c (pthread_create): Fix two pthread_mutex_lock() calls that
+ should have been pthread_mutex_unlock() calls.
+
+ * global.c (ptw32_tsd_mutex): Add mutex for TSD operations.
+
+ * tsd.c (pthread_key_create): Add critical section.
+ (pthread_setspecific): Ditto.
+ (pthread_getspecific): Ditto.
+ (pthread_key_delete): Ditto.
+
+ * sync.c (pthread_join): Fix two pthread_mutex_lock() calls that
+ should have been pthread_mutex_unlock() calls.
+
+Mon Oct 12 00:00:44 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h (ptw32_tsd_key_table): New.
+
+ * create.c (ptw32_start_call): Initialise per-thread TSD keys
+ to NULL.
+
+ * misc.c (pthread_once): Correct typo in comment.
+
+ * implement.h (ptw32_destructor_push): Remove.
+ (ptw32_destructor_pop): Remove.
+ (ptw32_destructor_run_all): Rename from ptw32_destructor_pop_all.
+ (PTW32_TSD_KEY_DELETED): Add enum.
+ (PTW32_TSD_KEY_INUSE): Add enum.
+
+ * cleanup.c (ptw32_destructor_push): Remove.
+ (ptw32_destructor_pop): Remove.
+ (ptw32_destructor_run_all): Totally revamped TSD.
+
+ * dll.c (ptw32_TSD_keys_TlsIndex): Initialise.
+
+ * tsd.c (pthread_setspecific): Totally revamped TSD.
+ (pthread_getspecific): Ditto.
+ (pthread_create): Ditto.
+ (pthread_delete): Ditto.
+
+Sun Oct 11 22:44:55 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * global.c (ptw32_tsd_key_table): Add new global.
+
+ * implement.h (ptw32_tsd_key_t and struct ptw32_tsd_key):
+ Add.
+ (struct _pthread): Remove destructorstack.
+
+ * cleanup.c (ptw32_destructor_run_all): Rename from
+ ptw32_destructor_pop_all. The key destructor stack was made
+ global rather than per-thread. No longer removes destructor nodes
+ from the stack. Comments updated.
+
+1998-10-06 Ben Elliston <bje@cygnus.com>
+
+ * condvar.c (cond_wait): Use POSIX, not Win32 mutex calls.
+ (pthread_cond_broadcast): Likewise.
+ (pthread_cond_signal): Likewise.
+
+1998-10-05 Ben Elliston <bje@cygnus.com>
+
+ * pthread.def: Update. Some functions aren't available yet, others
+ are macros in <pthread.h>.
+
+ * tests/join.c: Remove; useless.
+
+Mon Oct 5 14:25:08 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * pthread.def: New file for building the DLL.
+
+1998-10-05 Ben Elliston <bje@cygnus.com>
+
+ * misc.c (pthread_equal): Correct inverted logic bug.
+ (pthread_once): Use the POSIX mutex primitives, not Win32. Remove
+ irrelevant FIXME comment.
+
+ * global.c (PTHREAD_MUTEX_INITIALIZER): Move to pthread.h.
+
+ * pthread.h (PTHREAD_MUTEX_INITIALIZER): Define.
+ (pthread_mutex_t): Reimplement as a struct containing a valid
+ flag. If the flag is ever down upon entry to a mutex operation,
+ we call pthread_mutex_create() to initialise the object. This
+ fixes the problem of how to handle statically initialised objects
+ that can't call InitializeCriticalSection() due to their context.
+ (PTHREAD_ONCE_INIT): Define.
+
+ * mutex.c (pthread_mutex_init): Set valid flag.
+ (pthread_mutex_destroy): Clear valid flag.
+ (pthread_mutex_lock): Check and handle the valid flag.
+ (pthread_mutex_unlock): Likewise.
+ (pthread_mutex_trylock): Likewise.
+
+ * tests/mutex3.c: New file; test for the static initialisation
+ macro. Passes.
+
+ * tests/create1.c: New file; test pthread_create(). Passes.
+
+ * tests/equal.c: Poor test; remove.
+
+ * tests/equal1.c New file; test pthread_equal(). Passes.
+
+ * tests/once1.c: New file; test for pthread_once(). Passes.
+
+ * tests/self.c: Remove; rename to self1.c.
+
+ * tests/self1.c: This is the old self.c.
+
+ * tests/self2.c: New file. Test pthread_self() with a single
+ thread. Passes.
+
+ * tests/self3.c: New file. Test pthread_self() with a couple of
+ threads to ensure their thread IDs differ. Passes.
+
+1998-10-04 Ben Elliston <bje@cygnus.com>
+
+ * tests/mutex2.c: Test pthread_mutex_trylock(). Passes.
+
+ * tests/mutex1.c: New basic test for mutex functions (it passes).
+ (main): Eliminate warning.
+
+ * configure.in: Test for __stdcall, not _stdcall. Typo.
+
+ * configure: Regenerate.
+
+ * attr.c (pthread_attr_setstackaddr): Remove FIXME comment. Win32
+ does know about ENOSYS after all.
+ (pthread_attr_setstackaddr): Likewise.
+
+1998-10-03 Ben Elliston <bje@cygnus.com>
+
+ * configure.in: Test for the `_stdcall' keyword. Define `STDCALL'
+ to `_stdcall' if we have it, null otherwise.
+
+ * configure: Regenerate.
+
+ * acconfig.h (STDCALL): New define.
+
+ * config.h.in: Regenerate.
+
+ * create.c (ptw32_start_call): Add STDCALL prefix.
+
+ * mutex.c (pthread_mutex_init): Correct function signature.
+
+ * attr.c (pthread_attr_init): Only zero out the `sigmask' member
+ if we have the sigset_t type.
+
+ * pthread.h: No need to include <unistd.h>. It doesn't even exist
+ on Win32! Again, an artifact of cross-compilation.
+ (pthread_sigmask): Only provide if we have the sigset_t type.
+
+ * process.h: Remove. This was a stand-in before we started doing
+ native compilation under Win32.
+
+ * pthread.h (pthread_mutex_init): Make `attr' argument const.
+
+1998-10-02 Ben Elliston <bje@cygnus.com>
+
+ * COPYING: Remove.
+
+ * COPYING.LIB: Add. This library is under the LGPL.
+
+1998-09-13 Ben Elliston <bje@cygnus.com>
+
+ * configure.in: Test for required system features.
+
+ * configure: Generate.
+
+ * acconfig.h: New file.
+
+ * config.h.in: Generate.
+
+ * Makefile.in: Renamed from Makefile.
+
+ * COPYING: Import from a recent GNU package.
+
+ * config.guess: Likewise.
+
+ * config.sub: Likewise.
+
+ * install-sh: Likewise.
+
+ * config.h: Remove.
+
+ * Makefile: Likewise.
+
+1998-09-12 Ben Elliston <bje@cygnus.com>
+
+ * windows.h: No longer needed; remove.
+
+ * windows.c: Likewise.
+
+Sat Sep 12 20:09:24 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * windows.h: Remove error number definitions. These are in <errno.h>
+
+ * tsd.c: Add comment explaining rationale for not building
+ POSIX TSD on top of Win32 TLS.
+
+1998-09-12 Ben Elliston <bje@cygnus.com>
+
+ * {most}.c: Include <errno.h> to get POSIX error values.
+
+ * signal.c (pthread_sigmask): Only provide if HAVE_SIGSET_T is
+ defined.
+
+ * config.h: #undef features, don't #define them. This will be
+ generated by autoconf very soon.
+
+1998-08-11 Ben Elliston <bje@cygnus.com>
+
+ * Makefile (LIB): Define.
+ (clean): Define target.
+ (all): Build a library not just the object files.
+
+ * pthread.h: Provide a definition for struct timespec if we don't
+ already have one.
+
+ * windows.c (TlsGetValue): Bug fix.
+
+Thu Aug 6 15:19:22 1998 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * misc.c (pthread_once): Fix arg 1 of EnterCriticalSection()
+ and LeaveCriticalSection() calls to pass address-of lock.
+
+ * fork.c (pthread_atfork): Typecast (void (*)(void *)) funcptr
+ in each ptw32_handler_push() call.
+
+ * exit.c (ptw32_exit): Fix attr arg in
+ pthread_attr_getdetachstate() call.
+
+ * private.c (ptw32_new_thread): Typecast (HANDLE) NULL.
+ (ptw32_delete_thread): Ditto.
+
+ * implement.h: (PTW32_MAX_THREADS): Add define. This keeps
+ changing in an attempt to make thread administration data types
+ opaque and cleanup DLL startup.
+
+ * dll.c (PthreadsEntryPoint):
+ (ptw32_virgins): Remove malloc() and free() calls.
+ (ptw32_reuse): Ditto.
+ (ptw32_win32handle_map): Ditto.
+ (ptw32_threads_mutex_table): Ditto.
+
+ * global.c (_POSIX_THREAD_THREADS_MAX): Initialise with
+ PTW32_MAX_THREADS.
+ (ptw32_virgins): Ditto.
+ (ptw32_reuse): Ditto.
+ (ptw32_win32handle_map): Ditto.
+ (ptw32_threads_mutex_table): Ditto.
+
+ * create.c (pthread_create): Typecast (HANDLE) NULL.
+ Typecast (unsigned (*)(void *)) start_routine.
+
+ * condvar.c (pthread_cond_init): Add address-of operator & to
+ arg 1 of pthread_mutex_init() call.
+ (pthread_cond_destroy): Add address-of operator & to
+ arg 1 of pthread_mutex_destroy() call.
+
+ * cleanup.c (ptw32_destructor_pop_all): Add (int) cast to
+ pthread_getspecific() arg.
+ (ptw32_destructor_pop): Add (void *) cast to "if" conditional.
+ (ptw32_destructor_push): Add (void *) cast to
+ ptw32_handler_push() "key" arg.
+ (malloc.h): Add include.
+
+ * implement.h (ptw32_destructor_pop): Add prototype.
+
+ * tsd.c (implement.h): Add include.
+
+ * sync.c (pthread_join): Remove target_thread_mutex and it's
+ initialisation. Rename getdetachedstate to getdetachstate.
+ Remove unused variable "exitcode".
+ (pthread_detach): Remove target_thread_mutex and it's
+ initialisation. Rename getdetachedstate to getdetachstate.
+ Rename setdetachedstate to setdetachstate.
+
+ * signal.c (pthread_sigmask): Rename SIG_SET to SIG_SETMASK.
+ Cast "set" to (long *) in assignment to passify compiler warning.
+ Add address-of operator & to thread->attr.sigmask in memcpy() call
+ and assignment.
+ (pthread_sigmask): Add address-of operator & to thread->attr.sigmask
+ in memcpy() call and assignment.
+
+ * windows.h (THREAD_PRIORITY_ERROR_RETURN): Add.
+ (THREAD_PRIORITY_LOWEST): Add.
+ (THREAD_PRIORITY_HIGHEST): Add.
+
+ * sched.c (is_attr): Add function.
+ (implement.h): Add include.
+ (pthread_setschedparam): Rename all instances of "sched_policy"
+ to "sched_priority".
+ (pthread_getschedparam): Ditto.
+
+Tue Aug 4 16:57:58 1998 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * private.c (ptw32_delete_thread): Fix typo. Add missing ';'.
+
+ * global.c (ptw32_virgins): Change types from pointer to
+ array pointer.
+ (ptw32_reuse): Ditto.
+ (ptw32_win32handle_map): Ditto.
+ (ptw32_threads_mutex_table): Ditto.
+
+ * implement.h(ptw32_virgins): Change types from pointer to
+ array pointer.
+ (ptw32_reuse): Ditto.
+ (ptw32_win32handle_map): Ditto.
+ (ptw32_threads_mutex_table): Ditto.
+
+ * private.c (ptw32_delete_thread): Fix "entry" should be "thread".
+
+ * misc.c (pthread_self): Add extern for ptw32_threadID_TlsIndex.
+
+ * global.c: Add comment.
+
+ * misc.c (pthread_once): Fix member -> dereferences.
+ Change ptw32_once_flag to once_control->flag in "if" test.
+
+Tue Aug 4 00:09:30 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h(ptw32_virgins): Add extern.
+ (ptw32_virgin_next): Ditto.
+ (ptw32_reuse): Ditto.
+ (ptw32_reuse_top): Ditto.
+ (ptw32_win32handle_map): Ditto.
+ (ptw32_threads_mutex_table): Ditto.
+
+ * global.c (ptw32_virgins): Changed from array to pointer.
+ Storage allocation for the array moved into dll.c.
+ (ptw32_reuse): Ditto.
+ (ptw32_win32handle_map): Ditto.
+ (ptw32_threads_mutex_table): Ditto.
+
+ * dll.c (PthreadsEntryPoint): Set up thread admin storage when
+ DLL is loaded.
+
+ * fork.c (pthread_atfork): Fix function pointer arg to all
+ ptw32_handler_push() calls. Change "arg" arg to NULL in child push.
+
+ * exit.c: Add windows.h and process.h includes.
+ (ptw32_exit): Add local detachstate declaration.
+ (ptw32_exit): Fix incorrect name for pthread_attr_getdetachstate().
+
+ * pthread.h (_POSIX_THREAD_ATTR_STACKSIZE): Move from global.c
+ (_POSIX_THREAD_ATTR_STACKADDR): Ditto.
+
+ * create.c (pthread_create): Fix #if should be #ifdef.
+ (ptw32_start_call): Remove usused variables.
+
+ * process.h: Create.
+
+ * windows.h: Move _beginthreadex and _endthreadex into
+ process.h
+
+Mon Aug 3 21:19:57 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * condvar.c (pthread_cond_init): Add NULL attr to
+ pthread_mutex_init() call - default attributes will be used.
+ (cond_wait): Fix typo.
+ (cond_wait): Fix typo - cv was ev.
+ (pthread_cond_broadcast): Fix two identical typos.
+
+ * cleanup.c (ptw32_destructor_pop_all): Remove _ prefix from
+ PTHREAD_DESTRUCTOR_ITERATIONS.
+
+ * pthread.h: Move _POSIX_* values into posix.h
+
+ * pthread.h: Fix typo in pthread_mutex_init() prototype.
+
+ * attr.c (pthread_attr_init): Fix error in priority member init.
+
+ * windows.h (THREAD_PRIORITY_NORMAL): Add.
+
+ * pthread.h (sched_param): Add missing ';' to struct definition.
+
+ * attr.c (pthread_attr_init): Remove obsolete pthread_attr_t
+ member initialisation - cancelstate, canceltype, cancel_pending.
+ (is_attr): Make arg "attr" a const.
+
+ * implement.h (PTW32_HANDLER_POP_LIFO): Remove definition.
+ (PTW32_HANDLER_POP_FIFO): Ditto.
+ (PTW32_VALID): Add missing newline escape (\).
+ (ptw32_handler_node): Make element "next" a pointer.
+
+1998-08-02 Ben Elliston <bje@cygnus.com>
+
+ * windows.h: Remove duplicate TlsSetValue() prototype. Add
+ TlsGetValue() prototype.
+ (FALSE): Define.
+ (TRUE): Likewise.
+ Add forgotten errno values. Guard against multiple #includes.
+
+ * windows.c: New file. Implement stubs for Win32 functions.
+
+ * Makefile (SRCS): Remove. Not explicitly needed.
+ (CFLAGS): Add -Wall for all warnings with GCC.
+
+Sun Aug 2 19:03:42 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * config.h: Create. This is a temporary stand-in for autoconf yet
+ to be done.
+ (HAVE_SIGNAL_H): Add.
+
+ * pthread.h: Minor rearrangement for temporary config.h.
+
+Fri Jul 31 14:00:29 1998 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * cleanup.c (ptw32_destructor_pop): Implement. Removes
+ destructors associated with a key without executing them.
+ (ptw32_destructor_pop_all): Add FIXME comment.
+
+ * tsd.c (pthread_key_delete): Add call to ptw32_destructor_pop().
+
+Fri Jul 31 00:05:45 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * tsd.c (pthread_key_create): Update to properly associate
+ the destructor routine with the key.
+ (pthread_key_delete): Add FIXME comment.
+
+ * exit.c (ptw32_vacuum): Add call to
+ ptw32_destructor_pop_all().
+
+ * implement.h (ptw32_handler_pop_all): Add prototype.
+ (ptw32_destructor_pop_all): Ditto.
+
+ * cleanup.c (ptw32_destructor_push): Implement. This is just a
+ call to ptw32_handler_push().
+ (ptw32_destructor_pop_all): Implement. This is significantly
+ different to ptw32_handler_pop_all().
+
+ * Makefile (SRCS): Create. Preliminary.
+
+ * windows.h: Create. Contains Win32 definitions for compile
+ testing. This is just a standin for the real one.
+
+ * pthread.h (SIG_UNBLOCK): Fix typo. Was SIG_BLOCK.
+ (windows.h): Add include. Required for CRITICAL_SECTION.
+ (pthread_cond_t): Move enum declaration outside of struct
+ definition.
+ (unistd.h): Add include - may be temporary.
+
+ * condvar.c (windows.h): Add include.
+
+ * implement.h (PTW32_THIS): Remove - no longer required.
+ (PTW32_STACK): Use pthread_self() instead of PTW32_THIS.
+
+Thu Jul 30 23:12:45 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h: Remove ptw32_find_entry() prototype.
+
+ * private.c: Extend comments.
+ Remove ptw32_find_entry() - no longer needed.
+
+ * create.c (ptw32_start_call): Add call to TlsSetValue() to
+ store the thread ID.
+
+ * dll.c (PthreadsEntryPoint): Implement. This is called
+ whenever a process loads the DLL. Used to initialise thread
+ local storage.
+
+ * implement.h: Add ptw32_threadID_TlsIndex.
+ Add ()s around PTW32_VALID expression.
+
+ * misc.c (pthread_self): Re-implement using Win32 TLS to store
+ the threads own ID.
+
+Wed Jul 29 11:39:03 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * private.c: Corrections in comments.
+ (ptw32_new_thread): Alter "if" flow to be more natural.
+
+ * cleanup.c (ptw32_handler_push): Same as below.
+
+ * create.c (pthread_create): Same as below.
+
+ * private.c (ptw32_new_thread): Rename "new" to "new_thread".
+ Since when has a C programmer been required to know C++?
+
+Tue Jul 28 14:04:29 1998 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * implement.h: Add PTW32_VALID macro.
+
+ * sync.c (pthread_join): Modify to use the new thread
+ type and ptw32_delete_thread(). Rename "target" to "thread".
+ Remove extra local variable "target".
+ (pthread_detach): Ditto.
+
+ * signal.c (pthread_sigmask): Move init of "us" out of inner block.
+ Fix instance of "this" should have been "us". Rename "us" to "thread".
+
+ * sched.c (pthread_setschedparam): Modify to use the new thread
+ type.
+ (pthread_getschedparam): Ditto.
+
+ * private.c (ptw32_find_thread): Fix return type and arg.
+
+ * implement.h: Remove PTW32_YES and PTW32_NO.
+ (ptw32_new_thread): Add prototype.
+ (ptw32_find_thread): Ditto.
+ (ptw32_delete_thread): Ditto.
+ (ptw32_new_thread_entry): Remove prototype.
+ (ptw32_find_thread_entry): Ditto.
+ (ptw32_delete_thread_entry): Ditto.
+ ( PTW32_NEW, PTW32_INUSE, PTW32_EXITED, PTW32_REUSE):
+ Add.
+
+
+ * create.c (pthread_create): Minor rename "us" to "new" (I need
+ these cues but it doesn't stop me coming out with some major bugs
+ at times).
+ Load start_routine and arg into the thread so the wrapper can
+ call it.
+
+ * exit.c (pthread_exit): Fix pthread_this should be pthread_self.
+
+ * cancel.c (pthread_setcancelstate): Change
+ ptw32_threads_thread_t * to pthread_t and init with
+ pthread_this().
+ (pthread_setcanceltype): Ditto.
+
+ * exit.c (ptw32_exit): Add new pthread_t arg.
+ Rename ptw32_delete_thread_entry to ptw32_delete_thread.
+ Rename "us" to "thread".
+ (pthread_exit): Call ptw32_exit with added thread arg.
+
+ * create.c (ptw32_start_call): Insert missing ")".
+ Add "us" arg to ptw32_exit() call.
+ (pthread_create): Modify to use new thread allocation scheme.
+
+ * private.c: Added detailed explanation of the new thread
+ allocation scheme.
+ (ptw32_new_thread): Totally rewritten to use
+ new thread allocation scheme.
+ (ptw32_delete_thread): Ditto.
+ (ptw32_find_thread): Obsolete.
+
+Mon Jul 27 17:46:37 1998 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * create.c (pthread_create): Start of rewrite. Not completed yet.
+
+ * private.c (ptw32_new_thread_entry): Start of rewrite. Not
+ complete.
+
+ * implement.h (ptw32_threads_thread): Rename, remove thread
+ member, add win32handle and ptstatus members.
+ (ptw32_t): Add.
+
+ * pthread.h: pthread_t is no longer mapped directly to a Win32
+ HANDLE type. This is so we can let the Win32 thread terminate and
+ reuse the HANDLE while pthreads holds it's own thread ID until
+ the last waiting join exits.
+
+Mon Jul 27 00:20:37 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * private.c (ptw32_delete_thread_entry): Destroy the thread
+ entry attribute object before deleting the thread entry itself.
+
+ * attr.c (pthread_attr_init): Initialise cancel_pending = FALSE.
+ (pthread_attr_setdetachstate): Rename "detached" to "detachedstate".
+ (pthread_attr_getdetachstate): Ditto.
+
+ * exit.c (ptw32_exit): Fix incorrect check for detachedstate.
+
+ * implement.h (ptw32_call_t): Remove env member.
+
+Sun Jul 26 13:06:12 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h (ptw32_new_thread_entry): Fix prototype.
+ (ptw32_find_thread_entry): Ditto.
+ (ptw32_delete_thread_entry): Ditto.
+ (ptw32_exit): Add prototype.
+
+ * exit.c (ptw32_exit): New function. Called from pthread_exit()
+ and ptw32_start_call() to exit the thread. It allows an extra
+ argument which is the return code passed to _endthreadex().
+ (ptw32_exit): Move thread entry delete call from ptw32_vacuum()
+ into here. Add more explanation of thread entry deletion.
+ (ptw32_exit): Clarify comment.
+
+ * create.c (ptw32_start_call): Change pthread_exit() call to
+ ptw32_exit() call.
+
+ * exit.c (ptw32_vacuum): Add thread entry deletion code
+ moved from ptw32_start_call(). See next item.
+ (pthread_exit): Remove longjmp(). Add mutex lock around thread table
+ manipulation code. This routine now calls _enthreadex().
+
+ * create.c (ptw32_start_call): Remove setjmp() call and move
+ cleanup code out. Call pthread_exit(NULL) to terminate the thread.
+
+1998-07-26 Ben Elliston <bje@cygnus.com>
+
+ * tsd.c (pthread_getspecific): Update comments.
+
+ * mutex.c (pthread_mutexattr_setpshared): Not supported; remove.
+ (pthread_mutexattr_getpshared): Likewise.
+
+ * pthread.h (pthread_mutexattr_setpshared): Remove prototype.
+ (pthread_mutexattr_getpshared): Likewise.
+
+Sun Jul 26 00:09:59 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * sync.c: Rename all instances of ptw32_count_mutex to
+ ptw32_table_mutex.
+
+ * implement.h: Rename ptw32_count_mutex to
+ ptw32_table_mutex.
+
+ * global.c: Rename ptw32_count_mutex to
+ ptw32_table_mutex.
+
+ * create.c (pthread_create): Add critical sections.
+ (ptw32_start_call): Rename ptw32_count_mutex to
+ ptw32_table_mutex.
+
+ * cancel.c (pthread_setcancelstate): Fix indirection bug and rename
+ "this" to "us".
+
+ * signal.c (pthread_sigmask): Rename "this" to "us" and fix some
+ minor syntax errors. Declare "us" and initialise it.
+
+ * sync.c (pthread_detach): Rename "this" to "target".
+
+ * pthread.h: Converting PTHREAD_* defines to alias the (const int)
+ values in global.c.
+
+ * global.c: Started converting PTHREAD_* defines to (const int) as
+ a part of making the eventual pthreads DLL binary compatible
+ through version changes.
+
+ * condvar.c (cond_wait): Add cancelation point. This applies the
+ point to both pthread_cond_wait() and pthread_cond_timedwait().
+
+ * exit.c (pthread_exit): Rename "this" to "us".
+
+ * implement.h: Add comment.
+
+ * sync.c (pthread_join): I've satisfied myself that pthread_detach()
+ does set the detached attribute in the thread entry attributes
+ to PTHREAD_CREATE_DETACHED. "if" conditions were changed to test
+ that attribute instead of a separate flag.
+
+ * create.c (pthread_create): Rename "this" to "us".
+ (pthread_create): cancelstate and canceltype are not attributes
+ so the copy to thread entry attribute storage was removed.
+ Only the thread itself can change it's cancelstate or canceltype,
+ ie. the thread must exist already.
+
+ * private.c (ptw32_delete_thread_entry): Mutex locks removed.
+ Mutexes must be applied at the caller level.
+ (ptw32_new_thread_entry): Ditto.
+ (ptw32_new_thread_entry): Init cancelstate, canceltype, and
+ cancel_pending to default values.
+ (ptw32_new_thread_entry): Rename "this" to "new".
+ (ptw32_find_thread_entry): Rename "this" to "entry".
+ (ptw32_delete_thread_entry): Rename "thread_entry" to "entry".
+
+ * create.c (ptw32_start_call): Mutexes changed to
+ ptw32_count_mutex. All access to the threads table entries is
+ under the one mutex. Otherwise chaos reigns.
+
+Sat Jul 25 23:16:51 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h (ptw32_threads_thread): Move cancelstate and
+ canceltype members out of pthread_attr_t into here.
+
+ * fork.c (fork): Add comment.
+
+1998-07-25 Ben Elliston <bje@cygnus.com>
+
+ * fork.c (fork): Autoconfiscate.
+
+Sat Jul 25 00:00:13 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * create.c (ptw32_start_call): Set thread priority. Ensure our
+ thread entry is removed from the thread table but only if
+ pthread_detach() was called and there are no waiting joins.
+ (pthread_create): Set detach flag in thread entry if the
+ thread is created PTHREAD_CREATE_DETACHED.
+
+ * pthread.h (pthread_attr_t): Rename member "detachedstate".
+
+ * attr.c (pthread_attr_init): Rename attr members.
+
+ * exit.c (pthread_exit): Fix indirection mistake.
+
+ * implement.h (PTW32_THREADS_TABLE_INDEX): Add.
+
+ * exit.c (ptw32_vacuum): Fix incorrect args to
+ ptw32_handler_pop_all() calls.
+ Make thread entry removal conditional.
+
+ * sync.c (pthread_join): Add multiple join and async detach handling.
+
+ * implement.h (PTW32_THREADS_TABLE_INDEX): Add.
+
+ * global.c (ptw32_threads_mutex_table): Add.
+
+ * implement.h (ptw32_once_flag): Remove.
+ (ptw32_once_lock): Ditto.
+ (ptw32_threads_mutex_table): Add.
+
+ * global.c (ptw32_once_flag): Remove.
+ (ptw32_once_lock): Ditto.
+
+ * sync.c (pthread_join): Fix tests involving new return value
+ from ptw32_find_thread_entry().
+ (pthread_detach): Ditto.
+
+ * private.c (ptw32_find_thread_entry): Failure return code
+ changed from -1 to NULL.
+
+Fri Jul 24 23:09:33 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * create.c (pthread_create): Change . to -> in sigmask memcpy() args.
+
+ * pthread.h: (pthread_cancel): Add function prototype.
+ (pthread_testcancel): Ditto.
+
+1998-07-24 Ben Elliston <bje@cygnus.com>
+
+ * pthread.h (pthread_condattr_t): Rename dummy structure member.
+ (pthread_mutexattr_t): Likewise.
+
+Fri Jul 24 21:13:55 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * cancel.c (pthread_cancel): Implement.
+ (pthread_testcancel): Implement.
+
+ * exit.c (pthread_exit): Add comment explaining the longjmp().
+
+ * implement.h (ptw32_threads_thread_t): New member cancelthread.
+ (PTW32_YES): Define.
+ (PTW32_NO): Define.
+ (RND_SIZEOF): Remove.
+
+ * create.c (pthread_create): Rename cancelability to cancelstate.
+
+ * pthread.h (pthread_attr_t): Rename cancelability to cancelstate.
+ (PTHREAD_CANCELED): Define.
+
+1998-07-24 Ben Elliston <bje@cygnus.com>
+
+ * pthread.h (SIG_BLOCK): Define if not already defined.
+ (SIG_UNBLOCK): Likewise.
+ (SIG_SETMASK): Likewise.
+ (pthread_attr_t): Add signal mask member.
+ (pthread_sigmask): Add function prototype.
+
+ * signal.c (pthread_sigmask): Implement.
+
+ * create.c: #include <string.h> to get a prototype for memcpy().
+ (pthread_create): New threads inherit their creator's signal
+ mask. Copy the signal mask to the new thread structure if we know
+ about signals.
+
+Fri Jul 24 16:33:17 1998 Ross Johnson <rpj@swan.canberra.edu.au>
+
+ * fork.c (pthread_atfork): Add all the necessary push calls.
+ Local implementation semantics:
+ If we get an ENOMEM at any time then ALL handlers
+ (including those from previous pthread_atfork() calls) will be
+ popped off each of the three atfork stacks before we return.
+ (fork): Add all the necessary pop calls. Add the thread cancellation
+ and join calls to the child fork.
+ Add #includes.
+
+ * implement.h: (ptw32_handler_push): Fix return type and stack arg
+ type in prototype.
+ (ptw32_handler_pop): Fix stack arg type in prototype.
+ (ptw32_handler_pop_all): Fix stack arg type in prototype.
+
+ * cleanup.c (ptw32_handler_push): Change return type to int and
+ return ENOMEM if malloc() fails.
+
+ * sync.c (pthread_detach): Use equality test, not assignment.
+
+ * create.c (ptw32_start_call): Add call to Win32 CloseHandle()
+ if thread is detached.
+
+1998-07-24 Ben Elliston <bje@cygnus.com>
+
+ * sync.c (pthread_detach): Close the Win32 thread handle to
+ emulate detached (or daemon) threads.
+
+Fri Jul 24 03:00:25 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * sync.c (pthread_join): Save valueptr arg in joinvalueptr for
+ pthread_exit() to use.
+
+ * private.c (ptw32_new_thread_entry): Initialise joinvalueptr to
+ NULL.
+
+ * create.c (ptw32_start_call): Rewrite to facilitate joins.
+ pthread_exit() will do a longjmp() back to here. Does appropriate
+ cleanup and exit/return from the thread.
+ (pthread_create): _beginthreadex() now passes a pointer to our
+ thread table entry instead of just the call member of that entry.
+
+ * implement.h (ptw32_threads_thread): New member
+ void ** joinvalueptr.
+ (ptw32_call_t): New member jmpbuf env.
+
+ * exit.c (pthread_exit): Major rewrite to handle joins and handing
+ value pointer to joining thread. Uses longjmp() back to
+ ptw32_start_call().
+
+ * create.c (pthread_create): Ensure values of new attribute members
+ are copied to the thread attribute object.
+
+ * attr.c (pthread_attr_destroy): Fix merge conflicts.
+ (pthread_attr_getdetachstate): Fix merge conflicts.
+ (pthread_attr_setdetachstate): Fix merge conflicts.
+
+ * pthread.h: Fix merge conflicts.
+
+ * sync.c (pthread_join): Fix merge conflicts.
+
+Fri Jul 24 00:21:21 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * sync.c (pthread_join): Add check for valid and joinable
+ thread.
+ (pthread_detach): Implement. After checking for a valid and joinable
+ thread, it's still a no-op.
+
+ * private.c (ptw32_find_thread_entry): Bug prevented returning
+ an error value in some cases.
+
+ * attr.c (pthread_attr_setdetachedstate): Implement.
+ (pthread_attr_getdetachedstate): Implement.
+
+ * implement.h: Move more hidden definitions into here from
+ pthread.h.
+
+1998-07-24 Ben Elliston <bje@cygnus.com>
+
+ * pthread.h (PTHREAD_CREATE_JOINABLE): Define.
+ (PTHREAD_CREATE_DETACHED): Likewise.
+ (pthread_attr_t): Add new structure member `detached'.
+ (pthread_attr_getdetachstate): Add function prototype.
+ (pthread_attr_setdetachstate): Likewise.
+
+ * sync.c (pthread_join): Return if the target thread is detached.
+
+ * attr.c (pthread_attr_init): Initialise cancelability and
+ canceltype structure members.
+ (pthread_attr_getdetachstate): Implement.
+ (pthread_attr_setdetachstate): Likewise.
+
+ * implement.h (PTW32_CANCEL_DEFAULTS): Remove. Bit fields
+ proved to be too cumbersome. Set the defaults in attr.c using the
+ public PTHREAD_CANCEL_* constants.
+
+ * cancel.c: New file.
+
+ * pthread.h (sched_param): Define this type.
+ (pthread_attr_getschedparam): Add function prototype.
+ (pthread_attr_setschedparam): Likewise.
+ (pthread_setcancelstate): Likewise.
+ (pthread_setcanceltype): Likewise.
+ (sched_get_priority_min): Likewise.
+ (sched_get_priority_max): Likewise.
+ (pthread_mutexattr_setprotocol): Remove; not supported.
+ (pthread_mutexattr_getprotocol): Likewise.
+ (pthread_mutexattr_setprioceiling): Likewise.
+ (pthread_mutexattr_getprioceiling): Likewise.
+ (pthread_attr_t): Add canceltype member. Update comments.
+ (SCHED_OTHER): Define this scheduling policy constant.
+ (SCHED_FIFO): Likewise.
+ (SCHED_RR): Likewise.
+ (SCHED_MIN): Define the lowest possible value for this constant.
+ (SCHED_MAX): Likewise, the maximum possible value.
+ (PTHREAD_CANCEL_ASYNCHRONOUS): Redefine.
+ (PTHREAD_CANCEL_DEFERRED): Likewise.
+
+ * sched.c: New file.
+ (pthread_setschedparam): Implement.
+ (pthread_getschedparam): Implement.
+ (sched_get_priority_max): Validate policy argument.
+ (sched_get_priority_min): Likewise.
+
+ * mutex.c (pthread_mutexattr_setprotocol): Remove; not supported.
+ (pthread_mutexattr_getprotocol): Likewise.
+ (pthread_mutexattr_setprioceiling): Likewise.
+ (pthread_mutexattr_getprioceiling): Likewise.
+
+Fri Jul 24 00:21:21 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * create.c (pthread_create): Arg to ptw32_new_thread_entry()
+ changed. See next entry. Move mutex locks out. Changes made yesterday
+ and today allow us to start the new thread running rather than
+ temporarily suspended.
+
+ * private.c (ptw32_new_thread_entry): ptw32_thread_table
+ was changed back to a table of thread structures rather than pointers.
+ As such we're trading storage for increaded speed. This routine
+ was modified to work with the new table. Mutex lock put in around
+ global data accesses.
+ (ptw32_find_thread_entry): Ditto
+ (ptw32_delete_thread_entry): Ditto
+
+Thu Jul 23 23:25:30 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * global.c: New. Global data objects declared here. These moved from
+ pthread.h.
+
+ * pthread.h: Move implementation hidden definitions into
+ implement.h.
+
+ * implement.h: Move implementation hidden definitions from
+ pthread.h. Add constants to index into the different handler stacks.
+
+ * cleanup.c (ptw32_handler_push): Simplify args. Restructure.
+ (ptw32_handler_pop): Simplify args. Restructure.
+ (ptw32_handler_pop_all): Simplify args. Restructure.
+
+Wed Jul 22 00:16:22 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * attr.c, implement.h, pthread.h, ChangeLog: Resolve CVS merge
+ conflicts.
+
+ * private.c (ptw32_find_thread_entry): Changes to return type
+ to support leaner ptw32_threads_table[] which now only stores
+ ptw32_thread_thread_t *.
+ (ptw32_new_thread_entry): Internal changes.
+ (ptw32_delete_thread_entry): Internal changes to avoid contention.
+ Calling routines changed accordingly.
+
+ * pthread.h: Modified cleanup macros to use new generic push and pop.
+ Added destructor and atfork stacks to ptw32_threads_thread_t.
+
+ * cleanup.c (ptw32_handler_push, ptw32_handler_pop,
+ ptw32_handler_pop_all): Renamed cleanup push and pop routines
+ and made generic to handle destructors and atfork handlers as
+ well.
+
+ * create.c (ptw32_start_call): New function is a wrapper for
+ all new threads. It allows us to do some cleanup when the thread
+ returns, ie. that is otherwise only done if the thread is cancelled.
+
+ * exit.c (ptw32_vacuum): New function contains code from
+ pthread_exit() that we need in the new ptw32_start_call()
+ as well.
+
+ * implement.h: Various additions and minor changes.
+
+ * pthread.h: Various additions and minor changes.
+ Change cleanup handler macros to use generic handler push and pop
+ functions.
+
+ * attr.c: Minor mods to all functions.
+ (is_attr): Implemented missing function.
+
+ * create.c (pthread_create): More clean up.
+
+ * private.c (ptw32_find_thread_entry): Implement.
+ (ptw32_delete_thread_entry): Implement.
+ (ptw32_new_thread_entry): Implement.
+ These functions manipulate the implementations internal thread
+ table and are part of general code cleanup and modularisation.
+ They replace ptw32_getthreadindex() which was removed.
+
+ * exit.c (pthread_exit): Changed to use the new code above.
+
+ * pthread.h: Add cancelability constants. Update comments.
+
+1998-07-22 Ben Elliston <bje@cygnus.com>
+
+ * attr.c (pthread_setstacksize): Update test of attr argument.
+ (pthread_getstacksize): Likewise.
+ (pthread_setstackaddr): Likewise.
+ (pthread_getstackaddr): Likewise.
+ (pthread_attr_init): No need to allocate any storage.
+ (pthread_attr_destroy): No need to free any storage.
+
+ * mutex.c (is_attr): Not likely to be needed; remove.
+ (remove_attr): Likewise.
+ (insert_attr): Likewise.
+
+ * implement.h (ptw32_mutexattr_t): Moved to a public definition
+ in pthread.h. There was little gain in hiding these details.
+ (ptw32_condattr_t): Likewise.
+ (ptw32_attr_t): Likewise.
+
+ * pthread.h (pthread_atfork): Add function prototype.
+ (pthread_attr_t): Moved here from implement.h.
+
+ * fork.c (pthread_atfork): Preliminary implementation.
+ (ptw32_fork): Likewise.
+
+Wed Jul 22 00:16:22 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * cleanup.c (ptw32_cleanup_push): Implement.
+ (ptw32_cleanup_pop): Implement.
+ (ptw32_do_cancellation): Implement.
+ These are private to the implementation. The real cleanup functions
+ are macros. See below.
+
+ * pthread.h (pthread_cleanup_push): Implement as a macro.
+ (pthread_cleanup_pop): Implement as a macro.
+ Because these are macros which start and end a block, the POSIX scoping
+ requirement is observed. See the comment in the file.
+
+ * exit.c (pthread_exit): Refine the code.
+
+ * create.c (pthread_create): Code cleanup.
+
+ * implement.h (RND_SIZEOF): Add RND_SIZEOF(T) to round sizeof(T)
+ up to multiple of DWORD.
+ Add function prototypes.
+
+ * private.c (ptw32_getthreadindex): "*thread" should have been
+ "thread". Detect empty slot fail condition.
+
+1998-07-20 Ben Elliston <bje@cygnus.com>
+
+ * misc.c (pthread_once): Implement. Don't use a per-application
+ flag and mutex--make `pthread_once_t' contain these elements in
+ their structure. The earlier version had incorrect semantics.
+
+ * pthread.h (ptw32_once_flag): Add new variable. Remove.
+ (ptw32_once_lock): Add new mutex lock to ensure integrity of
+ access to ptw32_once_flag. Remove.
+ (pthread_once): Add function prototype.
+ (pthread_once_t): Define this type.
+
+Mon Jul 20 02:31:05 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * private.c (ptw32_getthreadindex): Implement.
+
+ * pthread.h: Add application static data dependent on
+ _PTHREADS_BUILD_DLL define. This is needed to avoid allocating
+ non-sharable static data within the pthread DLL.
+
+ * implement.h: Add ptw32_cleanup_stack_t, ptw32_cleanup_node_t
+ and PTW32_HASH_INDEX.
+
+ * exit.c (pthread_exit): Begin work on cleanup and de-allocate
+ thread-private storage.
+
+ * create.c (pthread_create): Add thread to thread table.
+ Keep a thread-private copy of the attributes with default values
+ filled in when necessary. Same for the cleanup stack. Make
+ pthread_create C run-time library friendly by using _beginthreadex()
+ instead of CreateThread(). Fix error returns.
+
+Sun Jul 19 16:26:23 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h: Rename pthreads_thread_count to ptw32_threads_count.
+ Create ptw32_threads_thread_t struct to keep thread specific data.
+
+ * create.c: Rename pthreads_thread_count to ptw32_threads_count.
+ (pthread_create): Handle errors from CreateThread().
+
+1998-07-19 Ben Elliston <bje@cygnus.com>
+
+ * condvar.c (pthread_cond_wait): Generalise. Moved from here ..
+ (cond_wait): To here.
+ (pthread_cond_timedwait): Implement; use generalised cond_wait().
+
+ * pthread.h (pthread_key_t): Define this type.
+ (pthread_key_create): Add function prototype.
+ (pthread_setspecific): Likewise.
+ (pthread_getspecific): Likwise.
+ (pthread_key_delete): Likewise.
+
+ * tsd.c (pthread_key_create): Implement.
+ (pthread_setspecific): Likewise.
+ (pthread_getspecific): Likewise.
+ (pthread_key_delete): Likewise.
+
+ * mutex.c (pthread_mutex_trylock): Return ENOSYS if this function
+ is called on a Win32 platform which is not Windows NT.
+
+1998-07-18 Ben Elliston <bje@cygnus.com>
+
+ * condvar.c (pthread_condattr_init): Do not attempt to malloc any
+ storage; none is needed now that condattr_t is an empty struct.
+ (pthread_condattr_destory): Likewise; do not free storage.
+ (pthread_condattr_setpshared): No longer supported; return ENOSYS.
+ (pthread_condattr_getpshared): Likewise.
+ (pthread_cond_init): Implement with help from Douglas Schmidt.
+ Remember to initialise the cv's internal mutex.
+ (pthread_cond_wait): Likewise.
+ (pthread_cond_signal): Likewise.
+ (pthread_cond_broadcast): Likewise.
+ (pthread_cond_timedwait): Preliminary implementation, but I need
+ to see some API documentation for `WaitForMultipleObject'.
+ (pthread_destory): Implement.
+
+ * pthread.h (pthread_cond_init): Add function protoype.
+ (pthread_cond_broadcast): Likewise.
+ (pthread_cond_signal): Likewise.
+ (pthread_cond_timedwait): Likewise.
+ (pthread_cond_wait): Likewise.
+ (pthread_cond_destroy): Likewise.
+ (pthread_cond_t): Define this type. Fix for u_int. Do not assume
+ that the mutex contained withing the pthread_cond_t structure will
+ be a critical section. Use our new POSIX type!
+
+ * implement.h (ptw32_condattr_t): Remove shared attribute.
+
+1998-07-17 Ben Elliston <bje@cygnus.com>
+
+ * pthread.h (PTHREADS_PROCESS_PRIVATE): Remove.
+ (PTHREAD_PROCESS_SHARED): Likewise. No support for mutexes shared
+ across processes for now.
+ (pthread_mutex_t): Use a Win32 CRITICAL_SECTION type for better
+ performance.
+
+ * implement.h (ptw32_mutexattr_t): Remove shared attribute.
+
+ * mutex.c (pthread_mutexattr_setpshared): This optional function
+ is no longer supported, since we want to implement POSIX mutex
+ variables using the much more efficient Win32 critical section
+ primitives. Critical section objects in Win32 cannot be shared
+ between processes.
+ (pthread_mutexattr_getpshared): Likewise.
+ (pthread_mutexattr_init): No need to malloc any storage; the
+ attributes structure is now empty.
+ (pthread_mutexattr_destroy): This is now a nop.
+ (pthread_mutex_init): Use InitializeCriticalSection().
+ (pthread_mutex_destroy): Use DeleteCriticalSection().
+ (pthread_mutex_lock): Use EnterCriticalSection().
+ (pthread_mutex_trylock): Use TryEnterCriticalSection(). This is
+ not supported by Windows 9x, but trylock is a hack anyway, IMHO.
+ (pthread_mutex_unlock): Use LeaveCriticalSection().
+
+1998-07-14 Ben Elliston <bje@cygnus.com>
+
+ * attr.c (pthread_attr_setstacksize): Implement.
+ (pthread_attr_getstacksize): Likewise.
+ (pthread_attr_setstackaddr): Likewise.
+ (pthread_attr_getstackaddr): Likewise.
+ (pthread_attr_init): Likewise.
+ (pthread_attr_destroy): Likewise.
+
+ * condvar.c (pthread_condattr_init): Add `_cond' to function name.
+
+ * mutex.c (pthread_mutex_lock): Add `_mutex' to function name.
+ (pthread_mutex_trylock): Likewise.
+ (pthread_mutex_unlock): Likewise.
+
+ * pthread.h (pthread_condattr_setpshared): Fix typo.
+ (pthread_attr_init): Add function prototype.
+ (pthread_attr_destroy): Likewise.
+ (pthread_attr_setstacksize): Likewise.
+ (pthread_attr_getstacksize): Likewise.
+ (pthread_attr_setstackaddr): Likewise.
+ (pthread_attr_getstackaddr): Likewise.
+
+Mon Jul 13 01:09:55 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h: Wrap in #ifndef _IMPLEMENT_H
+
+ * create.c (pthread_create): Map stacksize attr to Win32.
+
+ * mutex.c: Include implement.h
+
+1998-07-13 Ben Elliston <bje@cygnus.com>
+
+ * condvar.c (pthread_condattr_init): Implement.
+ (pthread_condattr_destroy): Likewise.
+ (pthread_condattr_setpshared): Likewise.
+ (pthread_condattr_getpshared): Likewise.
+
+ * implement.h (PTHREAD_THREADS_MAX): Remove trailing semicolon.
+ (PTHREAD_STACK_MIN): Specify; needs confirming.
+ (ptw32_attr_t): Define this type.
+ (ptw32_condattr_t): Likewise.
+
+ * pthread.h (pthread_mutex_t): Define this type.
+ (pthread_condattr_t): Likewise.
+ (pthread_mutex_destroy): Add function prototype.
+ (pthread_lock): Likewise.
+ (pthread_trylock): Likewise.
+ (pthread_unlock): Likewise.
+ (pthread_condattr_init): Likewise.
+ (pthread_condattr_destroy): Likewise.
+ (pthread_condattr_setpshared): Likewise.
+ (pthread_condattr_getpshared): Likewise.
+
+ * mutex.c (pthread_mutex_init): Implement.
+ (pthread_mutex_destroy): Likewise.
+ (pthread_lock): Likewise.
+ (pthread_trylock): Likewise.
+ (pthread_unlock): Likewise.
+
+1998-07-12 Ben Elliston <bje@cygnus.com>
+
+ * implement.h (ptw32_mutexattr_t): Define this implementation
+ internal type. Application programmers only see a mutex attribute
+ object as a void pointer.
+
+ * pthread.h (pthread_mutexattr_t): Define this type.
+ (pthread_mutexattr_init): Add function prototype.
+ (pthread_mutexattr_destroy): Likewise.
+ (pthread_mutexattr_setpshared): Likewise.
+ (pthread_mutexattr_getpshared): Likewise.
+ (pthread_mutexattr_setprotocol): Likewise.
+ (pthread_mutexattr_getprotocol): Likewise.
+ (pthread_mutexattr_setprioceiling): Likewise.
+ (pthread_mutexattr_getprioceiling): Likewise.
+ (PTHREAD_PROCESS_PRIVATE): Define.
+ (PTHREAD_PROCESS_SHARED): Define.
+
+ * mutex.c (pthread_mutexattr_init): Implement.
+ (pthread_mutexattr_destroy): Implement.
+ (pthread_mutexattr_setprotocol): Implement.
+ (pthread_mutexattr_getprotocol): Likewise.
+ (pthread_mutexattr_setprioceiling): Likewise.
+ (pthread_mutexattr_getprioceiling): Likewise.
+ (pthread_mutexattr_setpshared): Likewise.
+ (pthread_mutexattr_getpshared): Likewise.
+ (insert_attr): New function; very preliminary implementation!
+ (is_attr): Likewise.
+ (remove_attr): Likewise.
+
+Sat Jul 11 14:48:54 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
+
+ * implement.h: Preliminary implementation specific defines.
+
+ * create.c (pthread_create): Preliminary implementation.
+
+1998-07-11 Ben Elliston <bje@cygnus.com>
+
+ * sync.c (pthread_join): Implement.
+
+ * misc.c (pthread_equal): Likewise.
+
+ * pthread.h (pthread_join): Add function prototype.
+ (pthread_equal): Likewise.
+
+1998-07-10 Ben Elliston <bje@cygnus.com>
+
+ * misc.c (pthread_self): Implement.
+
+ * exit.c (pthread_exit): Implement.
+
+ * pthread.h (pthread_exit): Add function prototype.
+ (pthread_self): Likewise.
+ (pthread_t): Define this type.
+
+1998-07-09 Ben Elliston <bje@cygnus.com>
+
+ * create.c (pthread_create): A dummy stub right now.
+
+ * pthread.h (pthread_create): Add function prototype.
diff --git a/GNUmakefile b/GNUmakefile index ad995ff..aaa19bb 100644 --- a/GNUmakefile +++ b/GNUmakefile @@ -47,9 +47,9 @@ CXX = g++ AR = ar -OPT = -O3 +#OPT = -g #OPT = -O3 -DTEST_ICE -#OPT = -O2 -DNDEBUG -finline-functions +OPT = -O3 -finline-functions LFLAGS = -lwsock32 @@ -63,6 +63,9 @@ CFLAGS = $(OPT) -I. -D_WIN32_WINNT=0x400 -DHAVE_CONFIG_H -Wall ## Cygwin G++ #CFLAGS = $(OPT) -x $(GLANG) -fhandle-exceptions -D_WIN32_WINNT=0x400 -I. -DHAVE_CONFIG_H -Wall +DLL_INLINED_OBJS = \ + pthread.o + # Agregate modules for inlinability DLL_OBJS = \ attr.o \ @@ -314,6 +317,7 @@ PRIVATE_SRCS = \ RWLOCK_SRCS = \ ptw32_rwlock_check_need_init.c \ + ptw32_rwlock_cancelwrwait.c \ pthread_rwlock_init.c \ pthread_rwlock_destroy.c \ pthread_rwlockattr_init.c \ @@ -321,7 +325,9 @@ RWLOCK_SRCS = \ pthread_rwlockattr_getpshared.c \ pthread_rwlockattr_setpshared.c \ pthread_rwlock_rdlock.c \ + pthread_rwlock_timedrdlock.c \ pthread_rwlock_wrlock.c \ + pthread_rwlock_timedwrlock.c \ pthread_rwlock_unlock.c \ pthread_rwlock_tryrdlock.c \ pthread_rwlock_trywrlock.c @@ -375,27 +381,38 @@ TSD_SRCS = \ pthread_getspecific.c -GC_DLL = pthreadGC.dll GCE_DLL = pthreadGCE.dll +GCE_LIB = libpthreadGCE.a +GCE_INLINED_STAMP = pthreadGCE.stamp +GC_DLL = pthreadGC.dll GC_LIB = libpthreadGC.a -GCE_LIB = libpthreadGCE.a +GC_INLINED_STAMP = pthreadGC.stamp +PTHREAD_DEF = pthread.def -all: +help: @ echo Run one of the following command lines: - @ echo make clean GCE (to build the GNU C dll with C++ exception handling) - @ echo make clean GC (to build the GNU C dll with C cleanup code) + @ echo make clean GCE (to build the GNU C dll with C++ exception handling) + @ echo make clean GC (to build the GNU C dll with C cleanup code) + @ echo make clean GCE-inlined (to build the GNU C inlined dll with C++ exception handling) + @ echo make clean GC-inlined (to build the GNU C inlined dll with C cleanup code) -auto: +all: @ $(MAKE) clean GCE @ $(MAKE) clean GC GC: - $(MAKE) CLEANUP_FLAGS="$(GC_CFLAGS)" $(GC_DLL) + $(MAKE) CLEANUP_FLAGS="$(GC_CFLAGS)" OBJ="$(DLL_OBJS)" $(GC_DLL) GCE: - $(MAKE) CLEANUP_FLAGS="$(GCE_CFLAGS)" $(GCE_DLL) + $(MAKE) CLEANUP_FLAGS="$(GCE_CFLAGS)" OBJ="$(DLL_OBJS)" $(GCE_DLL) + +GC-inlined: + $(MAKE) CLEANUP_FLAGS="$(GC_CFLAGS)" OBJ="$(DLL_INLINED_OBJS)" $(GC_INLINED_STAMP) + +GCE-inlined: + $(MAKE) CLEANUP_FLAGS="$(GCE_CFLAGS)" OBJ="$(DLL_INLINED_OBJS)" $(GCE_INLINED_STAMP) tests: @ cd tests @@ -412,19 +429,33 @@ tests: .c.o:; $(CC) -c -o $@ $(CFLAGS) $(CLEANUP_FLAGS) $< -$(GC_DLL): $(DLL_OBJS) - $(CC) $(OPT) -shared -o $@ $^ $(LFLAGS) - dlltool -k --dllname $@ --output-lib $(GC_LIB) --def pthread.def +$(PTHREAD_DEF): $(OBJS) + dlltool -z pthread.def $(DLL_INLINED_OBJS) + +$(GC_DLL): $(DLL_OBJS) $(PTHREAD_DEF) + $(CC) $(OPT) -shared -o $(GC_DLL) $(DLL_OBJS) $(LFLAGS) + dlltool -k --dllname $@ --output-lib $(GC_LIB) --def $(PTHREAD_DEF) + +$(GCE_DLL): $(DLL_OBJS) $(PTHREAD_DEF) + $(CXX) $(OPT) -mthreads -shared -o $(GCE_DLL) $(DLL_OBJS) $(LFLAGS) + dlltool -k --dllname $@ --output-lib $(GCE_LIB) --def $(PTHREAD_DEF) + +$(GC_INLINED_STAMP): $(DLL_INLINED_OBJS) $(PTHREAD_DEF) + $(CC) $(OPT) -shared -o $(GC_DLL) $(DLL_INLINED_OBJS) $(LFLAGS) + dlltool -k --dllname $(GC_DLL) --output-lib $(GC_LIB) --def $(PTHREAD_DEF) + echo touched > $(GC_INLINED_STAMP) -$(GCE_DLL): $(DLL_OBJS) - $(CXX) $(OPT) -mthreads -shared -o $@ $^ $(LFLAGS) - dlltool -k --dllname $@ --output-lib $(GCE_LIB) --def pthread.def +$(GCE_INLINED_STAMP): $(DLL_INLINED_OBJS) $(PTHREAD_DEF) + $(CXX) $(OPT) -mthreads -shared -o $(GCE_DLL) $(DLL_INLINED_OBJS) $(LFLAGS) + dlltool -k --dllname $(GCE_DLL) --output-lib $(GCE_LIB) --def $(PTHREAD_DEF) + echo touched > $(GCE_INLINED_STAMP) clean: -$(RM) *~ -$(RM) *.pre -$(RM) *.o -$(RM) *.exe + -$(RM) $(PTHREAD_DEF) realclean: clean -$(RM) $(GC_LIB) @@ -11,18 +11,22 @@ DLLDEST=$(DEVROOT)\DLL LIBDEST=$(DEVROOT)\DLL
DLLS = pthreadVCE.dll pthreadVSE.dll pthreadVC.dll
+INLINED_STAMPS = pthreadVCE.stamp pthreadVSE.stamp pthreadVC.stamp
OPTIM = /O2
+#CFLAGS = /W3 /MT /nologo /Yd /Zi /I. /D_WIN32_WINNT=0x400 /DHAVE_CONFIG_H /DTEST_ICE
+CFLAGS = /W3 /MT /nologo /Yd /Zi /I. /D_WIN32_WINNT=0x400 /DHAVE_CONFIG_H
+
# C++ Exceptions
-VCEFLAGS = /GX /TP /D__CLEANUP_CXX
+VCEFLAGS = /GX /TP /D__CLEANUP_CXX $(CFLAGS)
#Structured Exceptions
-VSEFLAGS = /D__CLEANUP_SEH
+VSEFLAGS = /D__CLEANUP_SEH $(CFLAGS)
#C cleanup code
-VCFLAGS = /D__CLEANUP_C
+VCFLAGS = /D__CLEANUP_C $(CFLAGS)
-#CFLAGS = $(OPTIM) /W3 /MT /nologo /Yd /Zi /I. /D_WIN32_WINNT=0x400 /DHAVE_CONFIG_H /DTEST_ICE
-CFLAGS = $(OPTIM) /W3 /MT /nologo /Yd /Zi /I. /D_WIN32_WINNT=0x400 /DHAVE_CONFIG_H
+DLL_INLINED_OBJS = \
+ pthread.obj
# Agregate modules for inlinability
DLL_OBJS = \
@@ -270,6 +274,7 @@ PRIVATE_SRCS = \ RWLOCK_SRCS = \
ptw32_rwlock_check_need_init.c \
+ ptw32_rwlock_cancelwrwait.c \
pthread_rwlock_init.c \
pthread_rwlock_destroy.c \
pthread_rwlockattr_init.c \
@@ -277,7 +282,9 @@ RWLOCK_SRCS = \ pthread_rwlockattr_getpshared.c \
pthread_rwlockattr_setpshared.c \
pthread_rwlock_rdlock.c \
+ pthread_rwlock_timedrdlock.c \
pthread_rwlock_wrlock.c \
+ pthread_rwlock_timedwrlock.c \
pthread_rwlock_unlock.c \
pthread_rwlock_tryrdlock.c \
pthread_rwlock_trywrlock.c
@@ -336,6 +343,9 @@ all: @ echo nmake clean VCE (to build the MSVC dll with C++ exception handling)
@ echo nmake clean VSE (to build the MSVC dll with structured exception handling)
@ echo nmake clean VC (to build the MSVC dll with C cleanup code)
+ @ echo nmake clean VCE-inlined (to build the MSVC inlined dll with C++ exception handling)
+ @ echo nmake clean VSE-inlined (to build the MSVC inlined dll with structured exception handling)
+ @ echo nmake clean VC-inlined (to build the MSVC inlined dll with C cleanup code)
auto:
@ nmake clean VCE
@@ -343,17 +353,31 @@ auto: @ nmake clean VC
VCE:
- @ nmake /nologo EHFLAGS="$(VCEFLAGS)" pthreadVCE.dll
+ @ nmake /nologo EHFLAGS="$(OPTIM) $(VCEFLAGS)" pthreadVCE.dll
VSE:
- @ nmake /nologo EHFLAGS="$(VSEFLAGS)" pthreadVSE.dll
+ @ nmake /nologo EHFLAGS="$(OPTIM) $(VSEFLAGS)" pthreadVSE.dll
VC:
- @ nmake /nologo EHFLAGS="$(VCFLAGS)" pthreadVC.dll
+ @ nmake /nologo EHFLAGS="$(OPTIM) $(VCFLAGS)" pthreadVC.dll
+
+#
+# The so-called inlined DLL is just a single translation unit with
+# inlining optimisation turned on.
+#
+VCE-inlined:
+ @ nmake /nologo EHFLAGS="/O2 /Ob1 $(VCEFLAGS)" pthreadVCE.stamp
+
+VSE-inlined:
+ @ nmake /nologo EHFLAGS="/O2 /Ob1 $(VSEFLAGS)" pthreadVSE.stamp
+
+VC-inlined:
+ @ nmake /nologo EHFLAGS="/O2 /Ob1 $(VCFLAGS)" pthreadVC.stamp
realclean: clean
if exist *.dll del *.dll
if exist *.lib del *.lib
+ if exist *.stamp del *.stamp
clean:
if exist *.obj del *.obj
@@ -367,13 +391,18 @@ install: $(DLLS) copy pthread*.dll $(DLLDEST)
copy pthread*.lib $(LIBDEST)
-$(DLLS): $(DLL_OBJS) pthread.def
+$(DLLS): $(DLL_OBJS)
cl /LD /Zi /nologo $(DLL_OBJS) \
/link /nodefaultlib:libcmt /implib:$*.lib \
- msvcrt.lib wsock32.lib /def:pthread.def /out:$@
+ msvcrt.lib wsock32.lib /out:$@
+
+$(INLINED_STAMPS): $(DLL_INLINED_OBJS)
+ cl /LD /Zi /nologo $(DLL_INLINED_OBJS) \
+ /link /nodefaultlib:libcmt /implib:$*.lib \
+ msvcrt.lib wsock32.lib /out:$*.dll
.c.obj:
- cl $(EHFLAGS) $(CFLAGS) -c $<
+ cl $(EHFLAGS) -c $<
attr.obj: attr.c $(ATTR_SRCS) $(INCL)
barrier.obj: barrier.c $(BARRIER_SRCS) $(INCL)
@@ -1,24 +1,24 @@ -/* - * nmake file for uwin pthread library - */ - -VERSION = - -CCFLAGS = -V -g $(CC.DLL) -HAVE_CONFIG_H == 1 -_MT == 1 -_timeb == timeb -_ftime == ftime -_errno == _ast_errno - -$(INCLUDEDIR) :INSTALLDIR: pthread.h sched.h - -pthread $(VERSION) :LIBRARY: pthread.def attr.c barrier.c cancel.c cleanup.c condvar.c \ - create.c dll.c exit.c fork.c global.c misc.c mutex.c private.c \ - rwlock.c sched.c semaphore.c spin.c sync.c tsd.c nonportable.c - -:: ANNOUNCE CONTRIBUTORS COPYING.LIB ChangeLog FAQ GNUmakefile MAINTAINERS \ - Makefile Makefile.in Makefile.vc NEWS PROGRESS README README.WinCE \ - TODO WinCE-PORT install-sh errno.c tests tests.mk acconfig.h \ - config.guess config.h.in config.sub configure configure.in signal.c \ - README.CV README.NONPORTABLE pthread.dsp pthread.dsw - +/*
+ * nmake file for uwin pthread library
+ */
+
+VERSION = -
+CCFLAGS = -V -g $(CC.DLL)
+HAVE_CONFIG_H == 1
+_MT == 1
+_timeb == timeb
+_ftime == ftime
+_errno == _ast_errno
+
+$(INCLUDEDIR) :INSTALLDIR: pthread.h sched.h
+
+pthread $(VERSION) :LIBRARY: attr.c barrier.c cancel.c cleanup.c condvar.c \
+ create.c dll.c exit.c fork.c global.c misc.c mutex.c private.c \
+ rwlock.c sched.c semaphore.c spin.c sync.c tsd.c nonportable.c
+
+:: ANNOUNCE CONTRIBUTORS COPYING.LIB ChangeLog FAQ GNUmakefile MAINTAINERS \
+ Makefile Makefile.in Makefile.vc NEWS PROGRESS README README.WinCE \
+ TODO WinCE-PORT install-sh errno.c tests tests.mk acconfig.h \
+ config.guess config.h.in config.sub configure configure.in signal.c \
+ README.CV README.NONPORTABLE pthread.dsp pthread.dsw
+
@@ -42,9 +42,22 @@ #include "attr.c" #include "barrier.c" #include "cancel.c" +#include "cleanup.c" #include "condvar.c" +#include "create.c" +#include "dll.c" +#include "errno.c" +#include "exit.c" +#include "fork.c" +#include "global.c" #include "misc.c" #include "mutex.c" +#include "nonportable.c" #include "private.c" #include "rwlock.c" +#include "sched.c" #include "semaphore.c" +#include "signal.c" +#include "spin.c" +#include "sync.c" +#include "tsd.c" diff --git a/pthread.def b/pthread.def deleted file mode 100644 index 621ee09..0000000 --- a/pthread.def +++ /dev/null @@ -1,163 +0,0 @@ -; pthread.def
-; Last updated: $Date: 2002/02/18 03:16:55 $
-
-; Currently unimplemented functions are commented out.
-
-;LIBRARY pthread
-
-EXPORTS
-;pthread_atfork
-pthread_attr_destroy
-pthread_attr_getdetachstate
-pthread_attr_getinheritsched
-pthread_attr_getschedparam
-pthread_attr_getschedpolicy
-pthread_attr_getscope
-pthread_attr_getstackaddr
-pthread_attr_getstacksize
-pthread_attr_init
-pthread_attr_setdetachstate
-pthread_attr_setinheritsched
-pthread_attr_setschedparam
-pthread_attr_setschedpolicy
-pthread_attr_setscope
-pthread_attr_setstackaddr
-pthread_attr_setstacksize
-pthread_cancel
-;
-; These two are implemented as macros in pthread.h
-;
-;pthread_cleanup_pop
-;pthread_cleanup_push
-;
-pthread_condattr_destroy
-pthread_condattr_getpshared
-pthread_condattr_init
-pthread_condattr_setpshared
-pthread_cond_broadcast
-pthread_cond_destroy
-pthread_cond_init
-pthread_cond_signal
-pthread_cond_timedwait
-pthread_cond_wait
-pthread_create
-pthread_detach
-pthread_equal
-pthread_exit
-pthread_getconcurrency
-pthread_getschedparam
-pthread_getspecific
-pthread_join
-pthread_key_create
-pthread_key_delete
-;pthread_kill
-pthread_mutexattr_destroy
-;pthread_mutexattr_getprioceiling
-;pthread_mutexattr_getprotocol
-pthread_mutexattr_getpshared
-pthread_mutexattr_gettype
-pthread_mutexattr_init
-;pthread_mutexattr_setprioceiling
-;pthread_mutexattr_setprotocol
-pthread_mutexattr_setpshared
-pthread_mutexattr_settype
-pthread_mutexattr_destroy
-pthread_mutex_init
-pthread_mutex_destroy
-pthread_mutex_lock
-pthread_mutex_trylock
-pthread_mutex_timedlock
-pthread_mutex_unlock
-pthread_once
-pthread_self
-pthread_setcancelstate
-pthread_setcanceltype
-pthread_setconcurrency
-pthread_setschedparam
-pthread_setspecific
-;pthread_sigmask
-pthread_testcancel
-;
-; Scheduling
-;
-sched_get_priority_min
-sched_get_priority_max
-sched_getscheduler
-sched_setscheduler
-sched_yield
-;
-; Semaphores
-;
-sem_init
-sem_destroy
-sem_trywait
-sem_wait
-sem_timedwait
-sem_post
-sem_open
-sem_close
-sem_unlink
-sem_getvalue
-;
-; This next one is a macro
-;sched_rr_get_interval
-;
-;
-; Read/Write Locks
-;
-pthread_rwlock_init
-pthread_rwlock_destroy
-pthread_rwlock_tryrdlock
-pthread_rwlock_trywrlock
-pthread_rwlock_rdlock
-pthread_rwlock_wrlock
-pthread_rwlock_unlock
-;
-; Spin locks
-;
-pthread_spin_init
-pthread_spin_destroy
-pthread_spin_lock
-pthread_spin_unlock
-pthread_spin_trylock
-;
-; Barriers
-;
-pthread_barrier_init
-pthread_barrier_destroy
-pthread_barrier_wait
-pthread_barrierattr_init
-pthread_barrierattr_destroy
-pthread_barrierattr_getpshared
-pthread_barrierattr_setpshared
-;
-; Non-portable/compatibility with other implementations
-;
-pthread_delay_np
-pthread_mutexattr_getkind_np
-pthread_mutexattr_setkind_np
-pthread_num_processors_np
-;
-; Non-portable local implementation only
-;
-pthread_getw32threadhandle_np
-pthread_timechange_handler_np
-pthreadCancelableWait
-pthreadCancelableTimedWait
-;
-; For use when linking statically
-;
-pthread_win32_process_attach_np
-pthread_win32_process_detach_np
-pthread_win32_thread_attach_np
-pthread_win32_thread_detach_np
-;
-; Needed if !defined(_MSC_VER) && !defined(__cplusplus)
-;
-ptw32_push_cleanup
-ptw32_pop_cleanup
-;
-; Not for use directly. Needed by macros in pthread.h
-; to return internal SEH code.
-;
-ptw32_get_exception_services_code
@@ -437,6 +437,23 @@ extern "C" #define PTHREAD_THREADS_MAX 2019 +#if __GNUC__ && ! defined (__declspec) +# error Please upgrade your GNU compiler to one that supports __declspec. +#endif + +/* + * When building the DLL code, you should define PTW32_BUILD so that + * the variables/functions are exported correctly. When using the DLL, + * do NOT define PTW32_BUILD, and then the variables/functions will + * be imported correctly. + */ +#ifdef PTW32_BUILD +# define PTW32_DLLPORT __declspec (dllexport) +#else +# define PTW32_DLLPORT __declspec (dllimport) +#endif + + #if defined(_UWIN) && PTW32_LEVEL >= PTW32_LEVEL_MAX # include <sys/types.h> #else @@ -759,253 +776,259 @@ struct ptw32_cleanup_t /* * PThread Attribute Functions */ -int pthread_attr_init (pthread_attr_t * attr); +PTW32_DLLPORT int pthread_attr_init (pthread_attr_t * attr); -int pthread_attr_destroy (pthread_attr_t * attr); +PTW32_DLLPORT int pthread_attr_destroy (pthread_attr_t * attr); -int pthread_attr_getdetachstate (const pthread_attr_t * attr, - int *detachstate); +PTW32_DLLPORT int pthread_attr_getdetachstate (const pthread_attr_t * attr, + int *detachstate); -int pthread_attr_getstackaddr (const pthread_attr_t * attr, - void **stackaddr); +PTW32_DLLPORT int pthread_attr_getstackaddr (const pthread_attr_t * attr, + void **stackaddr); -int pthread_attr_getstacksize (const pthread_attr_t * attr, - size_t * stacksize); +PTW32_DLLPORT int pthread_attr_getstacksize (const pthread_attr_t * attr, + size_t * stacksize); -int pthread_attr_setdetachstate (pthread_attr_t * attr, - int detachstate); +PTW32_DLLPORT int pthread_attr_setdetachstate (pthread_attr_t * attr, + int detachstate); -int pthread_attr_setstackaddr (pthread_attr_t * attr, - void *stackaddr); +PTW32_DLLPORT int pthread_attr_setstackaddr (pthread_attr_t * attr, + void *stackaddr); -int pthread_attr_setstacksize (pthread_attr_t * attr, - size_t stacksize); +PTW32_DLLPORT int pthread_attr_setstacksize (pthread_attr_t * attr, + size_t stacksize); -int pthread_attr_getschedparam (const pthread_attr_t *attr, - struct sched_param *param); +PTW32_DLLPORT int pthread_attr_getschedparam (const pthread_attr_t *attr, + struct sched_param *param); -int pthread_attr_setschedparam (pthread_attr_t *attr, - const struct sched_param *param); +PTW32_DLLPORT int pthread_attr_setschedparam (pthread_attr_t *attr, + const struct sched_param *param); -int pthread_attr_setschedpolicy (pthread_attr_t *, - int); +PTW32_DLLPORT int pthread_attr_setschedpolicy (pthread_attr_t *, + int); -int pthread_attr_getschedpolicy (pthread_attr_t *, - int *); +PTW32_DLLPORT int pthread_attr_getschedpolicy (pthread_attr_t *, + int *); -int pthread_attr_setinheritsched(pthread_attr_t * attr, - int inheritsched); +PTW32_DLLPORT int pthread_attr_setinheritsched(pthread_attr_t * attr, + int inheritsched); -int pthread_attr_getinheritsched(pthread_attr_t * attr, - int * inheritsched); +PTW32_DLLPORT int pthread_attr_getinheritsched(pthread_attr_t * attr, + int * inheritsched); -int pthread_attr_setscope (pthread_attr_t *, - int); +PTW32_DLLPORT int pthread_attr_setscope (pthread_attr_t *, + int); -int pthread_attr_getscope (const pthread_attr_t *, - int *); +PTW32_DLLPORT int pthread_attr_getscope (const pthread_attr_t *, + int *); /* * PThread Functions */ -int pthread_create (pthread_t * tid, - const pthread_attr_t * attr, - void *(*start) (void *), - void *arg); +PTW32_DLLPORT int pthread_create (pthread_t * tid, + const pthread_attr_t * attr, + void *(*start) (void *), + void *arg); -int pthread_detach (pthread_t tid); +PTW32_DLLPORT int pthread_detach (pthread_t tid); -int pthread_equal (pthread_t t1, - pthread_t t2); +PTW32_DLLPORT int pthread_equal (pthread_t t1, + pthread_t t2); -void pthread_exit (void *value_ptr); +PTW32_DLLPORT void pthread_exit (void *value_ptr); -int pthread_join (pthread_t thread, - void **value_ptr); +PTW32_DLLPORT int pthread_join (pthread_t thread, + void **value_ptr); -pthread_t pthread_self (void); +PTW32_DLLPORT pthread_t pthread_self (void); -int pthread_cancel (pthread_t thread); +PTW32_DLLPORT int pthread_cancel (pthread_t thread); -int pthread_setcancelstate (int state, - int *oldstate); +PTW32_DLLPORT int pthread_setcancelstate (int state, + int *oldstate); -int pthread_setcanceltype (int type, - int *oldtype); +PTW32_DLLPORT int pthread_setcanceltype (int type, + int *oldtype); -void pthread_testcancel (void); +PTW32_DLLPORT void pthread_testcancel (void); -int pthread_once (pthread_once_t * once_control, - void (*init_routine) (void)); +PTW32_DLLPORT int pthread_once (pthread_once_t * once_control, + void (*init_routine) (void)); #if PTW32_LEVEL >= PTW32_LEVEL_MAX -ptw32_cleanup_t *ptw32_pop_cleanup (int execute); +PTW32_DLLPORT ptw32_cleanup_t *ptw32_pop_cleanup (int execute); -void ptw32_push_cleanup (ptw32_cleanup_t * cleanup, - void (*routine) (void *), - void *arg); +PTW32_DLLPORT void ptw32_push_cleanup (ptw32_cleanup_t * cleanup, + void (*routine) (void *), + void *arg); #endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */ /* * Thread Specific Data Functions */ -int pthread_key_create (pthread_key_t * key, - void (*destructor) (void *)); +PTW32_DLLPORT int pthread_key_create (pthread_key_t * key, + void (*destructor) (void *)); -int pthread_key_delete (pthread_key_t key); +PTW32_DLLPORT int pthread_key_delete (pthread_key_t key); -int pthread_setspecific (pthread_key_t key, - const void *value); +PTW32_DLLPORT int pthread_setspecific (pthread_key_t key, + const void *value); -void *pthread_getspecific (pthread_key_t key); +PTW32_DLLPORT void *pthread_getspecific (pthread_key_t key); /* * Mutex Attribute Functions */ -int pthread_mutexattr_init (pthread_mutexattr_t * attr); +PTW32_DLLPORT int pthread_mutexattr_init (pthread_mutexattr_t * attr); -int pthread_mutexattr_destroy (pthread_mutexattr_t * attr); +PTW32_DLLPORT int pthread_mutexattr_destroy (pthread_mutexattr_t * attr); -int pthread_mutexattr_getpshared (const pthread_mutexattr_t - * attr, - int *pshared); +PTW32_DLLPORT int pthread_mutexattr_getpshared (const pthread_mutexattr_t + * attr, + int *pshared); -int pthread_mutexattr_setpshared (pthread_mutexattr_t * attr, - int pshared); +PTW32_DLLPORT int pthread_mutexattr_setpshared (pthread_mutexattr_t * attr, + int pshared); -int pthread_mutexattr_settype (pthread_mutexattr_t * attr, int kind); -int pthread_mutexattr_gettype (pthread_mutexattr_t * attr, int *kind); +PTW32_DLLPORT int pthread_mutexattr_settype (pthread_mutexattr_t * attr, int kind); +PTW32_DLLPORT int pthread_mutexattr_gettype (pthread_mutexattr_t * attr, int *kind); /* * Barrier Attribute Functions */ -int pthread_barrierattr_init (pthread_barrierattr_t * attr); +PTW32_DLLPORT int pthread_barrierattr_init (pthread_barrierattr_t * attr); -int pthread_barrierattr_destroy (pthread_barrierattr_t * attr); +PTW32_DLLPORT int pthread_barrierattr_destroy (pthread_barrierattr_t * attr); -int pthread_barrierattr_getpshared (const pthread_barrierattr_t - * attr, - int *pshared); +PTW32_DLLPORT int pthread_barrierattr_getpshared (const pthread_barrierattr_t + * attr, + int *pshared); -int pthread_barrierattr_setpshared (pthread_barrierattr_t * attr, - int pshared); +PTW32_DLLPORT int pthread_barrierattr_setpshared (pthread_barrierattr_t * attr, + int pshared); /* * Mutex Functions */ -int pthread_mutex_init (pthread_mutex_t * mutex, - const pthread_mutexattr_t * attr); +PTW32_DLLPORT int pthread_mutex_init (pthread_mutex_t * mutex, + const pthread_mutexattr_t * attr); -int pthread_mutex_destroy (pthread_mutex_t * mutex); +PTW32_DLLPORT int pthread_mutex_destroy (pthread_mutex_t * mutex); -int pthread_mutex_lock (pthread_mutex_t * mutex); +PTW32_DLLPORT int pthread_mutex_lock (pthread_mutex_t * mutex); -int pthread_mutex_timedlock(pthread_mutex_t *mutex, - const struct timespec *abstime); +PTW32_DLLPORT int pthread_mutex_timedlock(pthread_mutex_t *mutex, + const struct timespec *abstime); -int pthread_mutex_trylock (pthread_mutex_t * mutex); +PTW32_DLLPORT int pthread_mutex_trylock (pthread_mutex_t * mutex); -int pthread_mutex_unlock (pthread_mutex_t * mutex); +PTW32_DLLPORT int pthread_mutex_unlock (pthread_mutex_t * mutex); /* * Spinlock Functions */ -int pthread_spin_init (pthread_spinlock_t * lock, int pshared); +PTW32_DLLPORT int pthread_spin_init (pthread_spinlock_t * lock, int pshared); -int pthread_spin_destroy (pthread_spinlock_t * lock); +PTW32_DLLPORT int pthread_spin_destroy (pthread_spinlock_t * lock); -int pthread_spin_lock (pthread_spinlock_t * lock); +PTW32_DLLPORT int pthread_spin_lock (pthread_spinlock_t * lock); -int pthread_spin_trylock (pthread_spinlock_t * lock); +PTW32_DLLPORT int pthread_spin_trylock (pthread_spinlock_t * lock); -int pthread_spin_unlock (pthread_spinlock_t * lock); +PTW32_DLLPORT int pthread_spin_unlock (pthread_spinlock_t * lock); /* * Barrier Functions */ -int pthread_barrier_init (pthread_barrier_t * barrier, - const pthread_barrierattr_t * attr, - unsigned int count); +PTW32_DLLPORT int pthread_barrier_init (pthread_barrier_t * barrier, + const pthread_barrierattr_t * attr, + unsigned int count); -int pthread_barrier_destroy (pthread_barrier_t * barrier); +PTW32_DLLPORT int pthread_barrier_destroy (pthread_barrier_t * barrier); -int pthread_barrier_wait (pthread_barrier_t * barrier); +PTW32_DLLPORT int pthread_barrier_wait (pthread_barrier_t * barrier); /* * Condition Variable Attribute Functions */ -int pthread_condattr_init (pthread_condattr_t * attr); +PTW32_DLLPORT int pthread_condattr_init (pthread_condattr_t * attr); -int pthread_condattr_destroy (pthread_condattr_t * attr); +PTW32_DLLPORT int pthread_condattr_destroy (pthread_condattr_t * attr); -int pthread_condattr_getpshared (const pthread_condattr_t * attr, - int *pshared); +PTW32_DLLPORT int pthread_condattr_getpshared (const pthread_condattr_t * attr, + int *pshared); -int pthread_condattr_setpshared (pthread_condattr_t * attr, - int pshared); +PTW32_DLLPORT int pthread_condattr_setpshared (pthread_condattr_t * attr, + int pshared); /* * Condition Variable Functions */ -int pthread_cond_init (pthread_cond_t * cond, - const pthread_condattr_t * attr); +PTW32_DLLPORT int pthread_cond_init (pthread_cond_t * cond, + const pthread_condattr_t * attr); -int pthread_cond_destroy (pthread_cond_t * cond); +PTW32_DLLPORT int pthread_cond_destroy (pthread_cond_t * cond); -int pthread_cond_wait (pthread_cond_t * cond, - pthread_mutex_t * mutex); +PTW32_DLLPORT int pthread_cond_wait (pthread_cond_t * cond, + pthread_mutex_t * mutex); -int pthread_cond_timedwait (pthread_cond_t * cond, - pthread_mutex_t * mutex, - const struct timespec *abstime); +PTW32_DLLPORT int pthread_cond_timedwait (pthread_cond_t * cond, + pthread_mutex_t * mutex, + const struct timespec *abstime); -int pthread_cond_signal (pthread_cond_t * cond); +PTW32_DLLPORT int pthread_cond_signal (pthread_cond_t * cond); -int pthread_cond_broadcast (pthread_cond_t * cond); +PTW32_DLLPORT int pthread_cond_broadcast (pthread_cond_t * cond); /* * Scheduling */ -int pthread_setschedparam (pthread_t thread, - int policy, - const struct sched_param *param); +PTW32_DLLPORT int pthread_setschedparam (pthread_t thread, + int policy, + const struct sched_param *param); -int pthread_getschedparam (pthread_t thread, - int *policy, - struct sched_param *param); +PTW32_DLLPORT int pthread_getschedparam (pthread_t thread, + int *policy, + struct sched_param *param); -int pthread_setconcurrency (int); +PTW32_DLLPORT int pthread_setconcurrency (int); -int pthread_getconcurrency (void); +PTW32_DLLPORT int pthread_getconcurrency (void); /* * Read-Write Lock Functions */ -int pthread_rwlock_init(pthread_rwlock_t *lock, - const pthread_rwlockattr_t *attr); +PTW32_DLLPORT int pthread_rwlock_init(pthread_rwlock_t *lock, + const pthread_rwlockattr_t *attr); -int pthread_rwlock_destroy(pthread_rwlock_t *lock); +PTW32_DLLPORT int pthread_rwlock_destroy(pthread_rwlock_t *lock); -int pthread_rwlock_tryrdlock(pthread_rwlock_t *); +PTW32_DLLPORT int pthread_rwlock_tryrdlock(pthread_rwlock_t *); -int pthread_rwlock_trywrlock(pthread_rwlock_t *); +PTW32_DLLPORT int pthread_rwlock_trywrlock(pthread_rwlock_t *); -int pthread_rwlock_rdlock(pthread_rwlock_t *lock); +PTW32_DLLPORT int pthread_rwlock_rdlock(pthread_rwlock_t *lock); -int pthread_rwlock_wrlock(pthread_rwlock_t *lock); +PTW32_DLLPORT int pthread_rwlock_timedrdlock(pthread_rwlock_t *lock, + const struct timespec *abstime); -int pthread_rwlock_unlock(pthread_rwlock_t *lock); +PTW32_DLLPORT int pthread_rwlock_wrlock(pthread_rwlock_t *lock); -int pthread_rwlockattr_init (pthread_rwlockattr_t * attr); +PTW32_DLLPORT int pthread_rwlock_timedwrlock(pthread_rwlock_t *lock, + const struct timespec *abstime); -int pthread_rwlockattr_destroy (pthread_rwlockattr_t * attr); +PTW32_DLLPORT int pthread_rwlock_unlock(pthread_rwlock_t *lock); -int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t * attr, - int *pshared); +PTW32_DLLPORT int pthread_rwlockattr_init (pthread_rwlockattr_t * attr); -int pthread_rwlockattr_setpshared (pthread_rwlockattr_t * attr, - int pshared); +PTW32_DLLPORT int pthread_rwlockattr_destroy (pthread_rwlockattr_t * attr); + +PTW32_DLLPORT int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t * attr, + int *pshared); + +PTW32_DLLPORT int pthread_rwlockattr_setpshared (pthread_rwlockattr_t * attr, + int pshared); #if PTW32_LEVEL >= PTW32_LEVEL_MAX - 1 @@ -1016,23 +1039,25 @@ int pthread_rwlockattr_setpshared (pthread_rwlockattr_t * attr, /* * Compatibility with Linux. */ -int pthread_mutexattr_setkind_np(pthread_mutexattr_t * attr, int kind); -int pthread_mutexattr_getkind_np(pthread_mutexattr_t * attr, int *kind); +PTW32_DLLPORT int pthread_mutexattr_setkind_np(pthread_mutexattr_t * attr, + int kind); +PTW32_DLLPORT int pthread_mutexattr_getkind_np(pthread_mutexattr_t * attr, + int *kind); /* * Possibly supported by other POSIX threads implementations */ -int pthread_delay_np (struct timespec * interval); -int pthread_num_processors_np(void); +PTW32_DLLPORT int pthread_delay_np (struct timespec * interval); +PTW32_DLLPORT int pthread_num_processors_np(void); /* * Useful if an application wants to statically link * the lib rather than load the DLL at run-time. */ -int pthread_win32_process_attach_np(void); -int pthread_win32_process_detach_np(void); -int pthread_win32_thread_attach_np(void); -int pthread_win32_thread_detach_np(void); +PTW32_DLLPORT int pthread_win32_process_attach_np(void); +PTW32_DLLPORT int pthread_win32_process_detach_np(void); +PTW32_DLLPORT int pthread_win32_thread_attach_np(void); +PTW32_DLLPORT int pthread_win32_thread_detach_np(void); /* * Register a system time change with the library. @@ -1042,7 +1067,7 @@ int pthread_win32_thread_detach_np(void); * WM_TIMECHANGE message. It can be passed directly to * pthread_create() as a new thread if desired. */ -void * pthread_timechange_handler_np(void *); +PTW32_DLLPORT void * pthread_timechange_handler_np(void *); #endif /*PTW32_LEVEL >= PTW32_LEVEL_MAX - 1 */ @@ -1051,7 +1076,7 @@ void * pthread_timechange_handler_np(void *); /* * Returns the Win32 HANDLE for the POSIX thread. */ -HANDLE pthread_getw32threadhandle_np(pthread_t thread); +PTW32_DLLPORT HANDLE pthread_getw32threadhandle_np(pthread_t thread); /* @@ -1069,8 +1094,9 @@ HANDLE pthread_getw32threadhandle_np(pthread_t thread); * argument to TimedWait is simply passed to * WaitForMultipleObjects. */ -int pthreadCancelableWait (HANDLE waitHandle); -int pthreadCancelableTimedWait (HANDLE waitHandle, DWORD timeout); +PTW32_DLLPORT int pthreadCancelableWait (HANDLE waitHandle); +PTW32_DLLPORT int pthreadCancelableTimedWait (HANDLE waitHandle, + DWORD timeout); #endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */ @@ -1078,18 +1104,8 @@ int pthreadCancelableTimedWait (HANDLE waitHandle, DWORD timeout); * Thread-Safe C Runtime Library Mappings. */ #ifndef _UWIN -#if 1 -#if (! defined(HAVE_ERRNO)) && (! defined(_REENTRANT)) && (! defined(_MT)) -int * _errno( void ); -#endif -#else -#if (! defined(NEED_ERRNO)) || (! defined( _REENTRANT ) && (! defined( _MT ) || ! defined( _MD ))) -#if defined(PTW32_BUILD) -__declspec( dllexport ) int * _errno( void ); -#else -int * _errno( void ); -#endif -#endif +#if (! defined(HAVE_ERRNO)) && (! defined(_REENTRANT)) && (! defined(_MT)) && (! defined(_MD)) +PTW32_DLLPORT int * _errno( void ); #endif #endif @@ -1144,7 +1160,7 @@ class ptw32_exception_exit : public ptw32_exception {}; /* * Get internal SEH tag */ -DWORD ptw32_get_exception_services_code(void); +PTW32_DLLPORT DWORD ptw32_get_exception_services_code(void); #endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */ @@ -1199,9 +1215,6 @@ DWORD ptw32_get_exception_services_code(void); catch( ptw32_exception & ) { throw; } \ catch( ... ) -/* I believe this is used by TRU64 POSIX threads implementation. */ -#define CATCHALL PtW32CatchAll - #else /* _MSC_VER */ #define catch( E ) \ diff --git a/pthread_cond_destroy.c b/pthread_cond_destroy.c index 5eab110..9c4a214 100644 --- a/pthread_cond_destroy.c +++ b/pthread_cond_destroy.c @@ -126,6 +126,8 @@ pthread_cond_destroy (pthread_cond_t * cond) return EINVAL; } + EnterCriticalSection(&ptw32_cond_list_lock); + if (*cond != PTHREAD_COND_INITIALIZER) { cv = *cond; @@ -168,8 +170,6 @@ pthread_cond_destroy (pthread_cond_t * cond) /* * Now it is safe to destroy */ - EnterCriticalSection(&ptw32_cond_list_lock); - *cond = NULL; if (sem_destroy(&(cv->semBlockLock)) != 0) @@ -205,8 +205,6 @@ pthread_cond_destroy (pthread_cond_t * cond) cv->next->prev = cv->prev; } - LeaveCriticalSection(&ptw32_cond_list_lock); - (void) free(cv); } } @@ -242,5 +240,7 @@ pthread_cond_destroy (pthread_cond_t * cond) LeaveCriticalSection(&ptw32_cond_test_init_lock); } + LeaveCriticalSection(&ptw32_cond_list_lock); + return ((result != 0) ? result : ((result1 != 0) ? result1 : result2)); } diff --git a/pthread_key_delete.c b/pthread_key_delete.c index 0fb3fbb..4ea1180 100644 --- a/pthread_key_delete.c +++ b/pthread_key_delete.c @@ -77,7 +77,7 @@ pthread_key_delete (pthread_key_t key) /* * Run through all Thread<-->Key associations * for this key. - * If the pthread_t still exits (ie the assoc->thread + * If the pthread_t still exists (ie the assoc->thread * is not NULL) then leave the assoc for the thread to * destroy. * Notes: diff --git a/pthread_rwlock_wrlock.c b/pthread_rwlock_wrlock.c index 6e85bf1..60061f3 100644 --- a/pthread_rwlock_wrlock.c +++ b/pthread_rwlock_wrlock.c @@ -40,18 +40,6 @@ #include "pthread.h" #include "implement.h" -static void -ptw32_rwlock_cancelwrwait(void * arg) -{ - pthread_rwlock_t rwl = (pthread_rwlock_t) arg; - - rwl->nSharedAccessCount = -rwl->nCompletedSharedAccessCount; - rwl->nCompletedSharedAccessCount = 0; - - (void) pthread_mutex_unlock(&(rwl->mtxSharedAccessCompleted)); - (void) pthread_mutex_unlock(&(rwl->mtxExclusiveAccess)); -} - int pthread_rwlock_wrlock(pthread_rwlock_t * rwlock) { @@ -35,6 +35,7 @@ */ #include "ptw32_rwlock_check_need_init.c" +#include "ptw32_rwlock_cancelwrwait.c" #include "pthread_rwlock_init.c" #include "pthread_rwlock_destroy.c" #include "pthread_rwlockattr_init.c" @@ -42,7 +43,9 @@ #include "pthread_rwlockattr_getpshared.c" #include "pthread_rwlockattr_setpshared.c" #include "pthread_rwlock_rdlock.c" +#include "pthread_rwlock_timedrdlock.c" #include "pthread_rwlock_wrlock.c" +#include "pthread_rwlock_timedwrlock.c" #include "pthread_rwlock_unlock.c" #include "pthread_rwlock_tryrdlock.c" #include "pthread_rwlock_trywrlock.c" @@ -65,6 +65,24 @@ /* Include everything */ #endif + +#if __GNUC__ && ! defined (__declspec) +# error Please upgrade your GNU compiler to one that supports __declspec. +#endif + +/* + * When building the DLL code, you should define PTW32_BUILD so that + * the variables/functions are exported correctly. When using the DLL, + * do NOT define PTW32_BUILD, and then the variables/functions will + * be imported correctly. + */ +#ifdef PTW32_BUILD +# define PTW32_DLLPORT __declspec (dllexport) +#else +# define PTW32_DLLPORT __declspec (dllimport) +#endif + + #if defined(__MINGW32__) || defined(_UWIN) #if PTW32_LEVEL >= PTW32_LEVEL_MAX /* For pid_t */ @@ -95,15 +113,15 @@ extern "C" { #endif /* __cplusplus */ -int sched_yield (void); +PTW32_DLLPORT int sched_yield (void); -int sched_get_priority_min (int policy); +PTW32_DLLPORT int sched_get_priority_min (int policy); -int sched_get_priority_max (int policy); +PTW32_DLLPORT int sched_get_priority_max (int policy); -int sched_setscheduler (pid_t pid, int policy); +PTW32_DLLPORT int sched_setscheduler (pid_t pid, int policy); -int sched_getscheduler (pid_t pid); +PTW32_DLLPORT int sched_getscheduler (pid_t pid); /* * Note that this macro returns ENOTSUP rather than diff --git a/semaphore.h b/semaphore.h index 78a627c..2956066 100644 --- a/semaphore.h +++ b/semaphore.h @@ -2,39 +2,39 @@ * Module: semaphore.h * * Purpose: - * Semaphores aren't actually part of the PThreads standard. - * They are defined by the POSIX Standard: + * Semaphores aren't actually part of the PThreads standard. + * They are defined by the POSIX Standard: * - * POSIX 1003.1b-1993 (POSIX.1b) + * POSIX 1003.1b-1993 (POSIX.1b) * * -------------------------------------------------------------------------- * - * Pthreads-win32 - POSIX Threads Library for Win32 - * Copyright(C) 1998 John E. Bossom - * Copyright(C) 1999,2002 Pthreads-win32 contributors + * Pthreads-win32 - POSIX Threads Library for Win32 + * Copyright(C) 1998 John E. Bossom + * Copyright(C) 1999,2002 Pthreads-win32 contributors * - * Contact Email: rpj@ise.canberra.edu.au + * Contact Email: rpj@ise.canberra.edu.au * - * The current list of contributors is contained - * in the file CONTRIBUTORS included with the source - * code distribution. The list can also be seen at the - * following World Wide Web location: - * http://sources.redhat.com/pthreads-win32/contributors.html + * The current list of contributors is contained + * in the file CONTRIBUTORS included with the source + * code distribution. The list can also be seen at the + * following World Wide Web location: + * http://sources.redhat.com/pthreads-win32/contributors.html * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. * - * You should have received a copy of the GNU Lesser General Public - * License along with this library in the file COPYING.LIB; - * if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * You should have received a copy of the GNU Lesser General Public + * License along with this library in the file COPYING.LIB; + * if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ #if !defined( SEMAPHORE_H ) #define SEMAPHORE_H @@ -65,6 +65,23 @@ /* Include everything */ #endif +#if __GNUC__ && ! defined (__declspec) +# error Please upgrade your GNU compiler to one that supports __declspec. +#endif + +/* + * When building the DLL code, you should define PTW32_BUILD so that + * the variables/functions are exported correctly. When using the DLL, + * do NOT define PTW32_BUILD, and then the variables/functions will + * be imported correctly. + */ +#ifdef PTW32_BUILD +# define PTW32_DLLPORT __declspec (dllexport) +#else +# define PTW32_DLLPORT __declspec (dllimport) +#endif + + /* * This is a duplicate of what is in the autoconf config.h, * which is only used when building the pthread-win32 libraries. @@ -97,7 +114,7 @@ #ifdef __cplusplus extern "C" { -#endif /* __cplusplus */ +#endif /* __cplusplus */ #ifndef HAVE_MODE_T typedef unsigned int mode_t; @@ -106,41 +123,41 @@ typedef unsigned int mode_t; typedef struct sem_t_ * sem_t; -int sem_init (sem_t * sem, - int pshared, - unsigned int value); +PTW32_DLLPORT int sem_init (sem_t * sem, + int pshared, + unsigned int value); -int sem_destroy (sem_t * sem); +PTW32_DLLPORT int sem_destroy (sem_t * sem); -int sem_trywait (sem_t * sem); +PTW32_DLLPORT int sem_trywait (sem_t * sem); -int sem_wait (sem_t * sem); +PTW32_DLLPORT int sem_wait (sem_t * sem); -int sem_timedwait (sem_t * sem, - const struct timespec * abstime); +PTW32_DLLPORT int sem_timedwait (sem_t * sem, + const struct timespec * abstime); -int sem_post (sem_t * sem); +PTW32_DLLPORT int sem_post (sem_t * sem); -int sem_post_multiple (sem_t * sem, - int count); +PTW32_DLLPORT int sem_post_multiple (sem_t * sem, + int count); -int sem_open (const char * name, - int oflag, - mode_t mode, - unsigned int value); +PTW32_DLLPORT int sem_open (const char * name, + int oflag, + mode_t mode, + unsigned int value); -int sem_close (sem_t * sem); +PTW32_DLLPORT int sem_close (sem_t * sem); -int sem_unlink (const char * name); +PTW32_DLLPORT int sem_unlink (const char * name); -int sem_getvalue (sem_t * sem, - int * sval); +PTW32_DLLPORT int sem_getvalue (sem_t * sem, + int * sval); #ifdef __cplusplus -} /* End of extern "C" */ -#endif /* __cplusplus */ +} /* End of extern "C" */ +#endif /* __cplusplus */ #undef PTW32_LEVEL #undef PTW32_LEVEL_MAX -#endif /* !SEMAPHORE_H */ +#endif /* !SEMAPHORE_H */ diff --git a/tests/ChangeLog b/tests/ChangeLog index 944961d..afd2cbb 100644 --- a/tests/ChangeLog +++ b/tests/ChangeLog @@ -1,3 +1,11 @@ +2002-02-23 Ross Johnson <rpj@special.ise.canberra.edu.au>
+
+ * condvar1_2.c: Loop over the test many times in the hope
+ of detecting any intermittent deadlocks. This is to
+ test a fixed problem in pthread_cond_destroy.c.
+
+ * spin4.c: Remove unused variable.
+
2002-02-17 Ross Johnson <rpj@special.ise.canberra.edu.au>
* condvar1_1.c: New test.
diff --git a/tests/GNUmakefile b/tests/GNUmakefile index 74bd6b3..9e6cf89 100644 --- a/tests/GNUmakefile +++ b/tests/GNUmakefile @@ -49,9 +49,8 @@ MAKE = make GLANG = c++ CC = gcc XXCFLAGS = -#CFLAGS = -g -O0 -mthreads -UNDEBUG -Wall -x $(GLANG) -#CFLAGS = -O3 -mthreads -UNDEBUG -Wall -x $(GLANG) -CFLAGS = -g -O0 -UNDEBUG -Wall $(XXCFLAGS) +CFLAGS = -O3 -UNDEBUG -Wall $(XXCFLAGS) +#CFLAGS = -g -O0 -UNDEBUG -Wall $(XXCFLAGS) BUILD_DIR = .. INCLUDES = -I. diff --git a/tests/condvar1_2.c b/tests/condvar1_2.c index 66237ba..4cb7d9d 100644 --- a/tests/condvar1_2.c +++ b/tests/condvar1_2.c @@ -81,7 +81,8 @@ #include "test.h" enum { - NUM_CV = 100 + NUM_CV = 100, + NUM_LOOPS = 100 }; static pthread_cond_t cv[NUM_CV]; @@ -89,34 +90,37 @@ static pthread_cond_t cv[NUM_CV]; int main() { - int i, j; + int i, j, k; int result = -1; pthread_t t; - for (i = 0; i < NUM_CV; i++) + for (k = 0; k < NUM_LOOPS; k++) { - assert(pthread_cond_init(&cv[i], NULL) == 0); - } + for (i = 0; i < NUM_CV; i++) + { + assert(pthread_cond_init(&cv[i], NULL) == 0); + } - j = NUM_CV; - (void) srand((unsigned)time(NULL)); + j = NUM_CV; + (void) srand((unsigned)time(NULL)); - /* Traverse the list asynchronously. */ - assert(pthread_create(&t, NULL, pthread_timechange_handler_np, NULL) == 0); + /* Traverse the list asynchronously. */ + assert(pthread_create(&t, NULL, pthread_timechange_handler_np, NULL) == 0); - do - { - i = (NUM_CV - 1) * rand() / RAND_MAX; - if (cv[i] != NULL) + do { - j--; - assert(pthread_cond_destroy(&cv[i]) == 0); + i = (NUM_CV - 1) * rand() / RAND_MAX; + if (cv[i] != NULL) + { + j--; + assert(pthread_cond_destroy(&cv[i]) == 0); + } } - } - while (j > 0); + while (j > 0); - assert(pthread_join(t, (void **) &result) == 0); - assert (result == 0); + assert(pthread_join(t, (void **) &result) == 0); + assert (result == 0); + } return 0; } diff --git a/tests/spin4.c b/tests/spin4.c index 3cd6d64..aabbb28 100644 --- a/tests/spin4.c +++ b/tests/spin4.c @@ -6,32 +6,32 @@ * * -------------------------------------------------------------------------- * - * Pthreads-win32 - POSIX Threads Library for Win32 - * Copyright(C) 1998 John E. Bossom - * Copyright(C) 1999,2002 Pthreads-win32 contributors + * Pthreads-win32 - POSIX Threads Library for Win32 + * Copyright(C) 1998 John E. Bossom + * Copyright(C) 1999,2002 Pthreads-win32 contributors * - * Contact Email: rpj@ise.canberra.edu.au + * Contact Email: rpj@ise.canberra.edu.au * - * The current list of contributors is contained - * in the file CONTRIBUTORS included with the source - * code distribution. The list can also be seen at the - * following World Wide Web location: - * http://sources.redhat.com/pthreads-win32/contributors.html + * The current list of contributors is contained + * in the file CONTRIBUTORS included with the source + * code distribution. The list can also be seen at the + * following World Wide Web location: + * http://sources.redhat.com/pthreads-win32/contributors.html * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. * - * You should have received a copy of the GNU Lesser General Public - * License along with this library in the file COPYING.LIB; - * if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * You should have received a copy of the GNU Lesser General Public + * License along with this library in the file COPYING.LIB; + * if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * * -------------------------------------------------------------------------- * @@ -47,7 +47,7 @@ struct _timeb currSysTimeStart; struct _timeb currSysTimeStop; #define GetDurationMilliSecs(_TStart, _TStop) ((_TStop.time*1000+_TStop.millitm) \ - - (_TStart.time*1000+_TStart.millitm)) + - (_TStart.time*1000+_TStart.millitm)) static int washere = 0; @@ -66,7 +66,6 @@ int main() { long result = 0; - int i; pthread_t t; int CPUs; struct _timeb sysTime; |