diff options
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 8812 |
1 files changed, 4431 insertions, 4381 deletions
@@ -1,19 +1,59 @@ -2004-10-23 Ross Johnson <ross@localhost.localdomain> +2004-11-02 Ross Johnson <rpj at callisto.canberra.edu.au> - * sem_timedwait.c (ptw32_sem_timedwait_cleanup): Release - Win32 semaphore. - sem_wait.c (ptw32_sem_wait_cleanup): Likewise. + * pthread_cond_wait.c (ptw32_cond_wait_cleanup): Lock CV mutex at + start of cleanup handler rather than at the end. + * implement.h (PTW32_THREAD_REUSE_EMPTY): Renamed from *_BOTTOM. + (ptw32_threadReuseBottom): New global variable. + * global.c (ptw32_threadReuseBottom): Declare new variable. + * ptw32_reuse.c (ptw32_reuse): Change reuse LIFO stack to LILO queue + to more evenly distribute use of reusable thread IDs; use renamed + PTW32_THREAD_REUSE_EMPTY. + * ptw32_processTerminate.c (ptw2_processTerminate): Use renamed + PTW32_THREAD_REUSE_EMPTY. -2004-10-22 Ross Johnson <rpj at callisto.canberra.edu.au>
+2004-10-31 Ross Johnson <rpj at callisto.canberra.edu.au> + + * implement.h (PThreadState): Add new state value + 'PThreadStateCancelPending'. + * pthread_testcancel.c (pthread_testcancel): Use new thread + 'PThreadStateCancelPending' state as short cut to avoid entering + kernel space via WaitForSingleObject() call. This was obviated + by user space sema acquisition in sem_wait() and sem_timedwait(), + which are also cancelation points. A call to pthread_testcancel() + was required, which introduced a kernel call, effectively nullifying + any gains made by the user space sem acquisition checks. + * pthread_cancel.c (pthread_cancel): Set new thread + 'PThreadStateCancelPending' state. + +2004-10-29 Ross Johnson <rpj at callisto.canberra.edu.au> + + * implement.h (pthread_t): Renamed to ptw32_thread_t; struct contains + all thread state. + * pthread.h (ptw32_handle_t): New general purpose struct to serve + as a handle for various reusable object IDs - currently only used + by pthread_t; contains a pointer to ptw32_thread_t (thread state) + and a general purpose uint for use as a reuse counter or flags etc. + (pthread_t): typedef'ed to ptw32_handle_t; the uint is the reuse + counter that allows the library to maintain unique POSIX thread IDs. + When the pthread struct reuse stack was introduced, threads would + often acquire an identical ID to a previously destroyed thread. The + same was true for the pre-reuse stack library, by virtue of pthread_t + being the address of the thread struct. The new pthread_t retains + the reuse stack but provides virtually unique thread IDs. + * sem_wait.c (ptw32_sem_wait_cleanup): New routine used for + cancelation cleanup. + * sem_timedwait.c (ptw32_sem_timedwait_cleanup): Likewise. + +2004-10-22 Ross Johnson <rpj at callisto.canberra.edu.au> * sem_init.c (sem_init): Introduce a 'lock' element in order to replace the interlocked operations with conventional serialisation. - This is needed in order to be able to atomically modify the sema value - and perform Win32 sema release operations. Win32 semaphores are used - instead of events in order to support efficient multiple posting. - If the whole modify/release isn't atomic, a race between sem_timedwait() - and sem_post() could result in a release when there is no waiting - semaphore, which would cause too many threads to proceed. + This is needed in order to be able to atomically modify the sema + value and perform Win32 sema release operations. Win32 semaphores are + used instead of events in order to support efficient multiple posting. + If the whole modify/release isn't atomic, a race between + sem_timedwait() and sem_post() could result in a release when there is + no waiting semaphore, which would cause too many threads to proceed. * sem_wait.c (sem_wait): Use new 'lock'element. * sem_timedwait.c (sem_timedwait): Likewise. * sem_trywait.c (sem_trywait): Likewise. @@ -28,17 +68,27 @@ restore sema value when cancelled. * sem_wait.c (sem_wait): Likewise. -2004-10-21 Ross Johnson <rpj at callisto.canberra.edu.au>
+2004-10-21 Ross Johnson <rpj at callisto.canberra.edu.au> * pthread_mutex_unlock.c (pthread_mutex_unlock): Must use PulseEvent() rather than SetEvent() to reset the event if there are no waiters. -2004-10-19 Ross Johnson <rpj at callisto.canberra.edu.au>
+2004-10-19 Ross Johnson <rpj at callisto.canberra.edu.au> * sem_init.c (sem_init): New semaphore model based on the same idea as mutexes, i.e. user space interlocked check to avoid unnecessarily entering kernel space. Wraps the Win32 semaphore and - keeps it's own counter. + keeps it's own counter. Although the motivation to do this has existed + for a long time, credit goes to Alexander Terekhov for providing + the logic. I have deviated slightly from AT's logic to add the waiters + count, which has made the code more complicated by adding cancelation + cleanup. This also appears to have broken the VCE (C++ EH) version of + the library (the same problem as previously reported - see BUGS #2), + only apparently not fixable using the usual workaround, nor by turning + all optimisation off. The GCE version works fine, so it is presumed to + be a bug in MSVC++ 6.0. The cancelation exception is thrown and caught + correctly, but the cleanup class destructor is never called. The failing + test is tests\semaphore4.c. * sem_wait.c (sem_wait): Implemented user space check model. * sem_post.c (sem_post): Likewise. * sem_trywait.c (sem_trywait): Likewise. @@ -48,4370 +98,4370 @@ * ptw32_semwait.c (ptw32_semwait): Likewise. * implement.h (sem_t_): Add counter element. -2004-10-15 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * implement.h (othread_mutex_t_): Use an event in place of
- the POSIX semaphore.
- * pthread_mutex_init.c: Create the event; remove semaphore init.
- * pthread_mutex_destroy.c: Delete the event.
- * pthread_mutex_lock.c: Replace the semaphore wait with the event wait.
- * pthread_mutex_trylock.c: Likewise.
- * pthread_mutex_timedlock.c: Likewise.
- * pthread_mutex_unlock.c: Set the event.
-
-2004-10-14 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * pthread_mutex_lock.c (pthread_mutex_lock): New algorithm using
- Terekhov's xchg based variation of Drepper's cmpxchg model.
- Theoretically, xchg uses fewer clock cycles than cmpxchg (using IA-32
- as a reference), however, in my opinion bus locking dominates the
- equation on smp systems, so the model with the least number of bus
- lock operations in the execution path should win, which is Terekhov's
- variant. On IA-32 uni-processor systems, it's faster to use the
- CMPXCHG instruction without locking the bus than to use the XCHG
- instruction, which always locks the bus. This makes the two variants
- equal for the non-contended lock (fast lane) execution path on up
- IA-32. Testing shows that the xchg variant is faster on up IA-32 as
- well if the test forces higher lock contention frequency, even though
- kernel calls should be dominating the times (on up IA-32, both
- variants used CMPXCHG instructions and neither locked the bus).
- * pthread_mutex_timedlock.c pthread_mutex_timedlock(): Similarly.
- * pthread_mutex_trylock.c (pthread_mutex_trylock): Similarly.
- * pthread_mutex_unlock.c (pthread_mutex_unlock): Similarly.
- * ptw32_InterlockedCompareExchange.c (ptw32_InterlockExchange): New
- function.
- (PTW32_INTERLOCKED_EXCHANGE): Sets up macro to use inlined
- ptw32_InterlockedExchange.
- * implement.h (PTW32_INTERLOCKED_EXCHANGE): Set default to
- InterlockedExchange().
- * Makefile: Building using /Ob2 so that asm sections within inline
- functions are inlined.
- -2004-10-08 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * pthread_mutex_destroy.c (pthread_mutex_destroy): Critical Section
- element is no longer required.
- * pthread_mutex_init.c (pthread_mutex_init): Likewise.
- * pthread_mutex_lock.c (pthread_mutex_lock): New algorithm following
- Drepper's paper at http://people.redhat.com/drepper/futex.pdf, but
- using the existing semaphore in place of the futex described in the
- paper. Idea suggested by Alexander Terekhov - see:
- http://sources.redhat.com/ml/pthreads-win32/2003/msg00108.html
- * pthread_mutex_timedlock.c pthread_mutex_timedlock(): Similarly.
- * pthread_mutex_trylock.c (pthread_mutex_trylock): Similarly.
- * pthread_mutex_unlock.c (pthread_mutex_unlock): Similarly.
- * pthread_barrier_wait.c (pthread_barrier_wait): Use inlined version
- of InterlockedCompareExchange() if possible - determined at
- build-time.
- * pthread_spin_destroy.c pthread_spin_destroy(): Likewise.
- * pthread_spin_lock.c pthread_spin_lock():Likewise.
- * pthread_spin_trylock.c (pthread_spin_trylock):Likewise.
- * pthread_spin_unlock.c (pthread_spin_unlock):Likewise.
- * ptw32_InterlockedCompareExchange.c: Sets up macro for inlined use.
- * implement.h (pthread_mutex_t_): Remove Critical Section element.
- (PTW32_INTERLOCKED_COMPARE_EXCHANGE): Set to default non-inlined
- version of InterlockedCompareExchange().
- * private.c: Include ptw32_InterlockedCompareExchange.c first for
- inlining.
- * GNUmakefile: Add commandline option to use inlined
- InterlockedCompareExchange().
- * Makefile: Likewise.
- -2004-09-27 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * pthread_mutex_lock.c (pthread_mutex_lock): Separate
- PTHREAD_MUTEX_NORMAL logic since we do not need to keep or check some
- state required by other mutex types; do not check mutex pointer arg
- for validity - leave this to the system since we are only checking
- for NULL pointers. This should improve speed of NORMAL mutexes and
- marginally improve speed of other type.
- * pthread_mutex_trylock.c (pthread_mutex_trylock): Likewise.
- * pthread_mutex_unlock.c (pthread_mutex_unlock): Likewise; also avoid
- entering the critical section for the no-waiters case, with approx.
- 30% reduction in lock/unlock overhead for this case.
- * pthread_mutex_timedlock.c (pthread_mutex_timedlock): Likewise; also
- no longer keeps mutex if post-timeout second attempt succeeds - this
- will assist applications that wish to impose strict lock deadlines,
- rather than simply to escape from frozen locks.
- -2004-09-09 Tristan Savatier <tristan at mpegtv.com>
- * pthread.h (struct pthread_once_t_): Qualify the 'done' element
- as 'volatile'.
- * pthread_once.c: Concerned about possible race condition,
- specifically on MPU systems re concurrent access to multibyte types.
- [Maintainer's note: the race condition is harmless on SPU systems
- and only a problem on MPU systems if concurrent access results in an
- exception (presumably generated by a hardware interrupt). There are
- other instances of similar harmless race conditions that have not
- been identified as issues.]
- -2004-09-09 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * pthread.h: Declare additional types as volatile.
- -2004-08-27 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * pthread_barrier_wait.c (pthread_barrier_wait): Remove excessive code
- by substituting the internal non-cancelable version of sem_wait
- (ptw32_semwait).
- -2004-08-25 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * pthread_join.c (pthread_join): Rewrite and re-order the conditional
- tests in an attempt to improve efficiency and remove a race
- condition.
- -2004-08-23 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * create.c (pthread_create): Don't create a thread if the thread
- id pointer location (first arg) is inaccessible. A memory
- protection fault will result if the thread id arg isn't an accessible
- location. This is consistent with GNU/Linux but different to
- Solaris or MKS (and possibly others), which accept NULL as meaning
- 'don't return the created thread's ID'. Applications that run
- using pthreads-win32 will run on all other POSIX threads
- implementations, at least w.r.t. this feature.
- - It was decided not to copy the Solaris et al behaviour because,
- although it would have simplified some application porting (but only
- from Solaris to Windows), the feature is not technically necessary,
- and the alternative segfault behaviour helps avoid buggy application
- code.
- -2004-07-01 Anuj Goyal <anuj.goyal at gmail.com>
- - * builddmc.bat: New; Windows bat file to build the library.
- * config.h (__DMC__): Support for Digital Mars compiler.
- * create.c (__DMC__): Likewise.
- * pthread_exit.c (__DMC__): Likewise.
- * pthread_join.c (__DMC__): Likewise.
- * ptw32_threadDestroy.c (__DMC__): Likewise.
- * ptw32_threadStart.c (__DMC__): Likewise.
- * ptw32_throw.c (__DMC__): Likewise.
- -2004-06-29 Anuj Goyal <anuj.goyal at gmail.com>
- - * pthread.h (__DMC__): Initial support for Digital Mars compiler.
- -2004-06-29 Will Bryant <will.bryant at ecosm.com>
- - * README.Borland: New; description of Borland changes.
- * Bmakefile: New makefile for the Borland make utility.
- * ptw32_InterlockedCompareExchange.c:
- Add Borland compatible asm code.
- -2004-06-26 Jason Bard <BardJA at Npt.NUWC.Navy.Mil>
- - * pthread.h (HAVE_STRUCT_TIMESPEC): If undefined, define it
- to avoid timespec struct redefined errors elsewhere in an
- application.
- -2004-06-21 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * pthread.h (PTHREAD_RECURSIVE_MUTEX_INITIALIZER): Mutex
- initialiser added for compatibility with Linux threads and
- others; currently not included in SUSV3.
- * pthread.h (PTHREAD_ERRORCHECK_MUTEX_INITIALIZER): Likewise.
- * pthread.h (PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP): Likewise.
- * pthread.h (PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP): Likewise.
- - * ptw32_mutex_check_need_init.c (ptw32_mutex_check_need_init):
- Add new initialisers.
- - * pthread_mutex_lock.c (pthread_mutex_lock): Check for new
- initialisers.
- * pthread_mutex_trylock.c (pthread_mutex_trylock): Likewise.
- * pthread_mutex_timedlock.c (pthread_mutex_timedlock): Likewise.
- * pthread_mutex_unlock.c (pthread_mutex_unlock): Likewise.
- * pthread_mutex_destroy.c (pthread_mutex_destroy): Likewise.
- -2004-05-20 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * README.NONPORTABLE: Document pthread_win32_test_features_np().
- * FAQ: Update various answers.
- -2004-05-19 Ross Johnson <rpj at callisto.canberra.edu.au>
- - * Makefile: Don't define _WIN32_WINNT on compiler command line.
- * GNUmakefile: Likewise.
- -2004-05-16 Ross Johnson <rpj at callisto.canberra.edu.au>
-
- * pthread_cancel.c (pthread_cancel): Adapted to use auto-detected
- QueueUserAPCEx features at run-time.
- (ptw32_RegisterCancelation): Drop in replacement for QueueUserAPCEx()
- if it can't be used. Provides older style non-preemptive async
- cancelation.
- * pthread_win32_attach_detach_np.c (pthread_win32_attach_np):
- Auto-detect quserex.dll and the availability of alertdrv.sys;
- initialise and close on process attach/detach.
- * global.c (ptw32_register_cancelation): Pointer to either
- QueueUserAPCEx() or ptw32_RegisterCancelation() depending on
- availability. QueueUserAPCEx makes pre-emptive async cancelation
- possible.
- * implement.h: Add definitions and prototypes related to QueueUserAPC.
-
-2004-05-16 Panagiotis E. Hadjidoukas <peh at hpclab.ceid.upatras.gr>
-
- * QueueUserAPCEx (separate contributed package): Provides preemptive
- APC feature.
- * pthread_cancel.c (pthread_cancel): Initial integration of
- QueueUserAPCEx into pthreads-win32 to provide true pre-emptive
- async cancelation of threads, including blocked threads.
-
-2004-05-06 Makoto Kato <raven at oldskool.jp>
-
- * pthread.h (DWORD_PTR): Define typedef for older MSVC.
- * pthread_cancel.c (AMD64): Add architecture specific Context register.
- * ptw32_getprocessors.c: Use correct types (DWORD_PTR) for mask
- variables.
-
-2004-04-06 P. van Bruggen <pietvb at newbridges.nl>
-
- * ptw32_threadDestroy.c: Destroy threadLock mutex to
- close a memory leak.
-
-2004-02-13 Gustav Hallberg <gustav at virtutech.com>
-
- * pthread_equal.c: Remove redundant equality logic.
-
-2003-12-10 Philippe Di Cristo <philipped at voicebox.com>
-
- * sem_timedwait.c (sem_timedwait): Fix timeout calculations.
-
-2003-10-20 Alexander Terekhov <TEREKHOV at de.ibm.com>
-
- * pthread_mutex_timedlock.c (ptw32_semwait): Move to individual module.
- * ptw32_semwait.c: New module.
- * pthread_cond_wait.c (ptw32_cond_wait_cleanup): Replace cancelable
- sem_wait() call with non-cancelable ptw32_semwait() call.
- * pthread.c (private.c): Re-order for inlining. GNU C warned that
- function ptw32_semwait() was defined 'inline' after it was called.
- * pthread_cond_signal.c (ptw32_cond_unblock): Likewise.
- * pthread_delay_np.c: Disable Watcom warning with comment.
- * *.c (process.h): Remove include from .c files. This is conditionally
- included by the common project include files.
-
-2003-10-20 James Ewing <james.ewing at sveasoft.com>
-
- * ptw32_getprocessors.c: Some Win32 environments don't have
- GetProcessAffinityMask(), so always return CPU count = 1 for them.
- * config.h (NEED_PROCESSOR_AFFINITY_MASK): Define for WinCE.
-
-2003-10-15 Ross Johnson <ross at callisto.canberra.edu.au>
-
- * Re-indented all .c files using default GNU style to remove assorted
- editor ugliness (used GNU indent utility in default style).
-
-2003-10-15 Alex Blanco <Alex.Blanco at motorola.com>
-
- * sem_init.c (sem_init): Would call CreateSemaphore even if the sema
- struct calloc failed; was not freeing calloced memory if either
- CreateSemaphore or CreateEvent failed.
-
-2003-10-14 Ross Johnson <ross at callisto.canberra.edu.au>
-
- * pthread.h: Add Watcom compiler compatibility. Esssentially just add
- the cdecl attribute to all exposed function prototypes so that Watcom
- generates function call code compatible with non-Watcom built libraries.
- By default, Watcom uses registers to pass function args if possible rather
- than pushing to stack.
- * semaphore.h: Likewise.
- * sched.h: Likewise.
- * pthread_cond_wait.c (ptw32_cond_wait_cleanup): Define with cdecl attribute
- for Watcom compatibility. This routine is called via pthread_cleanup_push so
- it had to match function arg definition.
- * Wmakefile: New makefile for Watcom builds.
-
-2003-09-14 Ross Johnson <rpj at callisto.canberra.edu.au>
-
- * pthread_setschedparam.c (pthread_setschedparam): Attempt to map
- all priority levels between max and min (as returned by
- sched_get_priority_min/max) to reasonable Win32 priority levels - i.e.
- levels between THREAD_PRIORITY_LOWEST/IDLE to THREAD_PRIORITY_LOWEST and
- between THREAD_PRIORITY_HIGHEST/TIME_CRITICAL to THREAD_PRIORITY_HIGHEST
- while others remain unchanged; record specified thread priority level
- for return by pthread_getschedparam.
-
- Note that, previously, specified levels not matching Win32 priority levels
- would silently leave the current thread priority unaltered.
-
- * pthread_getschedparam.c (pthread_getschedparam): Return the priority
- level specified by the latest pthread_setschedparam or pthread_create rather
- than the actual running thread priority as returned by GetThreadPriority - as
- required by POSIX. I.e. temporary or adjusted actual priority levels are not
- returned by this routine.
-
- * pthread_create.c (pthread_create): For priority levels specified via
- pthread attributes, attempt to map all priority levels between max and
- min (as returned by sched_get_priority_min/max) to reasonable Win32
- priority levels; record priority level given via attributes, or
- inherited from parent thread, for later return by pthread_getschedparam.
-
- * ptw32_new.c (ptw32_new): Initialise pthread_t_ sched_priority element.
-
- * pthread_self.c (pthread_self): Set newly created implicit POSIX thread
- sched_priority to Win32 thread's current actual priority. Temporarily
- altered priorities can't be avoided in this case.
-
- * implement.h (struct pthread_t_): Add new sched_priority element.
-
-2003-09-12 Ross Johnson <rpj at callisto.canberra.edu.au>
-
- * sched_get_priority_min.c (sched_get_priority_min): On error should return -1
- with errno set.
- * sched_get_priority_max.c (sched_get_priority_max): Likewise.
-
-2003-09-03 Ross Johnson <rpj at callisto.canberra.edu.au>
-
- * w32_cancelableWait.c (ptw32_cancelable_wait): Allow cancelation
- of implicit POSIX threads as well.
-
-2003-09-02 Ross Johnson <rpj at callisto.canberra.edu.au>
-
- * pthread_win32_attach_detach_np.c (pthread_win32_thread_detach_np):
- Add comment.
-
- * pthread_exit.c (pthread_exit): Fix to recycle the POSIX thread handle in
- addition to calling user TSD destructors. Move the implicit POSIX thread exit
- handling to ptw32_throw to centralise the logic.
-
- * ptw32_throw.c (ptw32_throw): Implicit POSIX threads have no point
- to jump or throw to, so cleanup and exit the thread here in this case. For
- processes using the C runtime, the exit code will be set to the POSIX
- reason for the throw (i.e. PTHREAD_CANCEL or the value given to pthread_exit).
- Note that pthread_exit() already had similar logic, which has been moved to
- here.
-
- * ptw32_threadDestroy.c (ptw32_threadDestroy): Don't close the Win32 handle
- of implicit POSIX threads - expect this to be done by Win32?
-
-2003-09-01 Ross Johnson <rpj at callisto.canberra.edu.au>
-
- * pthread_self.c (pthread_self): The newly aquired pthread_t must be
- assigned to the reuse stack, not freed, if the routine fails somehow.
-
-2003-08-13 Ross Johnson <rpj at ise.canberra.edu.au>
-
- * pthread_getschedparam.c (pthread_getschedparam): An invalid thread ID
- parameter was returning an incorrect error value; now uses a more exhaustive
- check for validity.
-
- * pthread_setschedparam.c (pthread_setschedparam): Likewise.
-
- * pthread_join.c (pthread_join): Now uses a more exhaustive
- check for validity.
-
- * pthread_detach.c (pthread_detach): Likewise.
-
- * pthread_cancel.c (pthread_cancel): Likewise.
-
- * ptw32_threadDestroy.c (ptw32_threadDestroy): pthread_t structs are
- never freed - push them onto a stack for reuse.
-
- * ptw32_new.c (ptw32_new): Check for reusable pthread_t before dynamically
- allocating new memory for the struct.
-
- * pthread_kill.c (pthread_kill): New file; new routine; takes only a zero
- signal arg so that applications can check the thread arg for validity; checks
- that the underlying Win32 thread HANDLE is valid.
-
- * pthread.h (pthread_kill): Add prototype.
-
- * ptw32_reuse.c (ptw32_threadReusePop): New file; new routine; pop a
- pthread_t off the reuse stack. pthread_t_ structs that have been destroyed, i.e.
- have exited detached or have been joined, are cleaned up and put onto a reuse
- stack. Consequently, thread IDs are no longer freed once calloced. The library
- will attempt to get a struct off this stack before asking the system to alloc
- new memory when creating threads. The stack is guarded by a global mutex.
- (ptw32_threadReusePush): New routine; push a pthread_t onto the reuse stack.
-
- * implement.h (ptw32_threadReusePush): Add new prototype.
- (ptw32_threadReusePop): Likewise.
- (pthread_t): Add new element.
-
- * ptw32_processTerminate.c (ptw32_processTerminate): Delete the thread
- reuse lock; free all thread ID structs on the thread reuse stack.
-
- * ptw32_processInitialize.c (ptw32_processInitialize): Initialise the
- thread reuse lock.
-
-2003-07-19 Ross Johnson <rpj at ise.canberra.edu.au>
-
- * GNUmakefile: modified to work under MsysDTK environment.
- * pthread_spin_lock.c (pthread_spin_lock): Check for NULL arg.
- * pthread_spin_unlock.c (pthread_spin_unlock): Likewise.
- * pthread_spin_trylock.c (pthread_spin_trylock): Likewise;
- fix incorrect pointer value if lock is dynamically initialised by
- this function.
- * sem_init.c (sem_init): Initialise sem_t value to quell compiler warning.
- * sem_destroy.c (sem_destroy): Likewise.
- * ptw32_threadStart.c (non-MSVC code sections): Include <exception> rather
- than old-style <new.h>; fix all std:: namespace entities such as
- std::terminate_handler instances and associated methods.
- * ptw32_callUserDestroyRoutines.c (non-MSVC code sections): Likewise.
-
-2003-06-24 Piet van Bruggen <pietvb at newbridges.nl>
-
- * pthread_spin_destroy.c (pthread_spin_destroy): Was not freeing the
- spinlock struct.
-
-2003-06-22 Nicolas Barry <boozai at yahoo.com>
-
- * pthread_mutex_destroy.c (pthread_mutex_destroy): When called
- with a recursive mutex that was locked by the current thread, the
- function was failing with a success return code.
-
-2003-05-15 Steven Reddie <Steven.Reddie at ca.com>
-
- * pthread_win32_attach_detach_np.c (pthread_win32_process_detach_np):
- NULLify ptw32_selfThreadKey after the thread is destroyed, otherwise
- destructors calling pthreads routines might resurrect it again, creating
- memory leaks. Call the underlying Win32 Tls routine directly rather than
- pthread_setspecific().
- (pthread_win32_thread_detach_np): Likewise.
-
-2003-05-14 Viv <vcotirlea at hotmail.com>
-
- * pthread.dsp: Change /MT compile flag to /MD.
-
-2003-03-04 Alexander Terekhov <TEREKHOV at de.ibm.com>
-
- * pthread_mutex_timedlock.c (pthread_mutex_timedlock): Fix failure to
- set ownership of mutex on second grab after abstime timeout.
- - bug reported by Robert Strycek <strycek at posam.sk>
-
-2002-12-17 Thomas Pfaff <tpfaff at gmx.net>
-
- * pthread_mutex_lock.c (ptw32_semwait): New static routine to provide
- a non-cancelable sem_wait() function. This is consistent with the
- way that pthread_mutex_timedlock.c does it.
- (pthread_mutex_lock): Use ptw32_semwait() instead of sem_wait().
-
-2002-12-11 Thomas Pfaff <tpfaff at gmx.net>
-
- * pthread_mutex_trylock.c: Should return EBUSY rather than EDEADLK.
- * pthread_mutex_destroy.c: Remove redundant ownership test (the
- trylock call does this for us); do not destroy a recursively locked
- mutex.
-
-2002-09-20 Michael Johnson <michaelj at maine.rr.com>
-
- * pthread_cond_destroy.c (pthread_cond_destroy):
- When two different threads exist, and one is attempting to
- destroy a condition variable while the other is attempting to
- initialize a condition variable that was created with
- PTHREAD_COND_INITIALIZER, a deadlock can occur. Shrink
- the ptw32_cond_list_lock critical section to fix it.
-
-2002-07-31 Ross Johnson <rpj at special.ise.canberra.edu.au>
-
- * ptw32_threadStart.c (ptw32_threadStart): Thread cancelLock
- destruction moved to ptw32_threadDestroy().
-
- * ptw32_threadDestroy.c (ptw32_threadDestroy): Destroy
- the thread's cancelLock. Moved here from ptw32_threadStart.c
- to cleanup implicit threads as well.
-
-2002-07-30 Alexander Terekhov <TEREKHOV at de.ibm.com>
-
- * pthread_cond_wait.c (ptw32_cond_wait_cleanup):
- Remove code designed to avoid/prevent spurious wakeup
- problems. It is believed that the sem_timedwait() call
- is consuming a CV signal that it shouldn't and this is
- breaking the avoidance logic.
-
-2002-07-30 Ross Johnson <rpj at ise.canberra.edu.au>
-
- * sem_timedwait.c (sem_timedwait): Tighten checks for
- unreasonable abstime values - that would result in
- unexpected timeout values.
-
- * w32_CancelableWait.c (ptw32_cancelable_wait):
- Tighten up return value checking and add comments.
-
-
-2002-06-08 Ross Johnson <rpj at special.ise.canberra.edu.au>
-
- * sem_getvalue.c (sem_getvalue): Now returns a value for the
- NEED_SEM version (i.e. earlier versions of WinCE).
-
-
-2002-06-04 Rob Fanner <rfanner at stonethree.com>
-
- * sem_getvalue.c (sem_getvalue): The Johnson M. Hart
- approach didn't work - we are forced to take an
- intrusive approach. We try to decrement the sema
- and then immediately release it again to get the
- value. There is a small probability that this may
- block other threads, but only momentarily.
-
-2002-06-03 Ross Johnson <rpj at ise.canberra.edu.au>
-
- * sem_init.c (sem_init): Initialise Win32 semaphores
- to _POSIX_SEM_VALUE_MAX (which this implementation
- defines in pthread.h) so that sem_getvalue() can use
- the trick described in the comments in sem_getvalue().
- * pthread.h (_POSIX_SEM_VALUE_MAX): Defined.
- (_POSIX_SEM_NSEMS_MAX): Defined - not used but may be
- useful for source code portability.
-
-2002-06-03 Rob Fanner <rfanner at stonethree.com>
-
- * sem_getvalue.c (sem_getvalue): Did not work on NT.
- Use approach suggested by Johnson M. Hart in his book
- "Win32 System Programming".
-
-2002-02-28 Ross Johnson <rpj at setup1.ise.canberra.edu.au>
-
- * errno.c: Compiler directive was incorrectly including code.
- * pthread.h: Conditionally added some #defines from config.h
- needed when not building the library. e.g. NEED_ERRNO, NEED_SEM.
- (PTW32_DLLPORT): Now only defined if _DLL defined.
- (_errno): Compiler directive was incorrectly including prototype.
- * sched.h: Conditionally added some #defines from config.h
- needed when not building the library.
- * semaphore.h: Replace an instance of NEED_SEM that should
- have been NEED_ERRNO. This change currently has nil effect.
-
- * GNUmakefile: Correct some recent changes.
-
- * Makefile: Add rule to generate pre-processor output.
-
-2002-02-23 Ross Johnson <rpj at setup1.ise.canberra.edu.au>
-
- * pthread_rwlock_timedrdlock.c: New - untested.
- * pthread_rwlock_timedwrlock.c: New - untested.
-
- * 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at special.ise.canberra.edu.au>
-
- * pthread.dsp (SOURCE): Add missing source files.
-
-2002-01-08 Ross Johnson <rpj at 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 at gmx.net>, Alexander Terekhov <TEREKHOV at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at setup1.ise.canberra.edu.au>
-
- * spin.c (pthread_spin_trylock): Was not returning
- EBUSY for multi CPU machines.
-
-2001-08-24 Ross Johnson <rpj at 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 at 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 at hawksoft.com>
-
- * tsd.c (pthread_getspecific): Preserve the last
- winsock error [from WSAGetLastError()].
-
-2001-07-18 Scott McCaskill <scott at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at setup1.ise.canberra.edu.au>
-
- * pthread.h (_POSIX_READER_WRITER_LOCKS): Define it
- if not already defined.
-
-2001-07-01 Alexander Terekhov <TEREKHOV at 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 at 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 at 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 at pdb4.siemens.de>
-
- * create.c (pthread_create): Set thread priority from
- thread attributes.
-
-2001-06-18 Ross Johnson <rpj at 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 at 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 at 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 at 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 at setup1.ise.canberra.edu.au>
-
- * mutex.c (pthread_mutexattr_init): Remove
- ptw32_mutex_default_kind.
-
-2001-06-05 Ross Johnson <rpj at 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 at 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 at de.ibm.com>, Louis Thomas <lthomas at 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 at 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 at 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 at 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 at 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 at 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 at 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 at special.ise.canberra.edu.au>
-
- * FAQ: Update Answer 6 re getting a fully working
- Mingw32 built library.
-
-2000-10-10 Steven Reddie <smr at essemer.com.au>
-
- * misc.c (pthread_self): Restore Win32 "last error"
- cleared by TlsGetValue() call in
- pthread_getspecific()
-
-2000-09-20 Arthur Kantor <akantor at 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 at 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 at special.ise.canberra.edu.au>
-
- * pthread.h (ctime_r): Fix arg.
-
-2000-09-08 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at special.ise.canberra.edu.au>
-
- * pthread.h: Remove #warning - VC++ doesn't accept it.
-
-2000-08-05 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at special.ise.canberra.edu.au>
-
- * FAQ: Added Q5 and Q6.
-
-2000-07-21 David Baggett <dmb at 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 at 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 at 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 at 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 at 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 at group2000.nl>
-
- * Makefile: Remove inconsistencies in 'cl' args
-
-2000-01-04 Ross Johnson <rpj at 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 at 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 at 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 at nbnet.nb.ca>, Erik Hensema <erik.hensema at 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 at 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 at 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 at 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 at 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 at 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 at group2000.nl>
-
- * pthread.h (ctime_r): Fix incorrect argument "_tm"
-
-1999-10-21 Aurelio Medina <aureliom at 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 at 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 at xiphos.ca>, Peter Slacik <Peter.Slacik at 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 at 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 at 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 at 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 at tatramed.sk>
-
- * mutex.c (pthread_mutex_destroy): Free mutex memory.
-
-1999-08-22 Ross Johnson <rpj at ixobrychus.canberra.edu.au>
-
- * exit.c (pthread_exit): Fix reference to potentially
- uninitialised pointer.
-
-1999-08-21 Ross Johnson <rpj at 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 at ixobrychus.canberra.edu.au>
-
- * private.c (ptw32_threadStart): Return exit status from
- the application thread startup routine.
- - Milan Gardian <mg at tatramed.sk>
-
-1999-08-18 John Bossom <john.Bossom at 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 at 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 at 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 at 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 at 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 at 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 at xiphos.ca>, John Bossom <John.Bossom at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * semaphore.h (mode_t): Conditionally typedef it.
-
-Fri May 28 13:33:05 1999 Mark E. Armstrong <avail at pacbell.net>
-
- * condvar.c (pthread_cond_broadcast): Fix possible memory fault
-
-Thu May 27 13:08:46 1999 Peter Slacik <Peter.Slacik at tatramed.sk>
-
- * condvar.c (pthread_cond_broadcast): Fix logic bug
-
-Thu May 27 13:08:46 1999 Bossom, John <John.Bossom at Cognos.COM>
-
- * condvar.c (pthread_cond_broadcast): optimise sem_post loop
-
-Fri May 14 12:13:18 1999 Mike Russo <miker at eai.com>
-
- * attr.c (pthread_attr_setdetachstate): Fix logic bug
-
-Sat May 8 09:42:30 1999 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * Makefile.in (OBJS): Add errno.o.
-
-Fri Apr 2 11:08:50 1999 Ross Johnson <rpj at 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 at 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 at iki.fi>
-
- * semaphore.c (ptw32_sem_timedwait): Check for negative
- milliseconds.
-
-Wed Mar 24 11:32:07 1999 John Bossom <jebossom at 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 at swan.canberra.edu.au>
-
- * cancel.c (comments): Update and cleanup.
-
-Fri Mar 19 09:12:59 1999 Ross Johnson <rpj at ixobrychus.canberra.edu.au>
-
- * private.c (ptw32_threadStart): status returns PTHREAD_CANCELED.
-
- * pthread.h (PTHREAD_CANCELED): defined.
-
-Tue Mar 16 1999 Ross Johnson <rpj at ixobrychus.canberra.edu.au>
-
- * all: Add GNU LGPL and Copyright and Warranty.
-
-Mon Mar 15 00:20:13 1999 Ross Johnson <rpj at 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 at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * misc.c (CancelableWait): Undo changes from Mar 8 and 7.
-
-Mon Mar 8 11:18:59 1999 Ross Johnson <rpj at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * implement.h: Undate comments.
-
-Sun Feb 21 1999 Ross Johnson <rpj at ixobrychus.canberra.edu.au>
-
- * pthread.h (PTHREAD_MUTEX_INITIALIZER): missing braces around
- cs element initialiser.
-
-1999-02-21 Ben Elliston <bje at 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 at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * configure: Various temporary changes.
- - Kevin Ruland <Kevin.Ruland at 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 at swan.canberra.edu.au>
-
- * semaphore.c: Comment format changes.
-
-Thu Feb 4 10:07:28 1999 Ross Johnson <rpj at 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 at 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 at 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 at swan.canberra.edu.au>
-
- * implement.h: Add #include <pthread.h>.
- Change sem_t to ptw32_sem_t.
-
-Tue Feb 2 18:07:43 1999 Kevin Ruland <Kevin.Ruland at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * semaphore.c (sem_wait): Remove second arg to
- pthreadCancelableWait() call.
-
-Sat Jan 23 17:36:40 1999 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * condvar.c (cond_timedwait): Remove comment.
-
-Fri Jan 15 15:41:28 1999 Ross Johnson <rpj at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * build.bat: Delete old binaries before compiling/linking.
-
-Tue Jan 12 09:58:38 1999 Tor Lillqvist <tml at 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 at 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 at 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 at 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 at 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 at hem2.passagen.se>.
-
-Tue Jan 5 16:33:04 1999 Ross Johnson <rpj at 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 at toilet.to.cygnus.com>
-
- * README: Update info about subscribing to the mailing list.
-
-Mon Jan 4 11:23:40 1999 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at ise.canberra.edu.au>
-
- * README: Correct cygwin32 compatibility statement.
-
-Sun Nov 15 21:24:06 1998 Ross Johnson <rpj at ixobrychus.canberra.edu.au>
-
- * cleanup.c (ptw32_destructor_run_all): Declare missing void * arg.
- Fixup CVS merge conflicts.
-
-1998-10-30 Ben Elliston <bje at 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 at swan.canberra.edu.au>
-
- * cleanup.c (ptw32_handler_push): Fixed bug appending new
- handler to list reported by Peter Slacik
- <Peter.Slacik at leibinger.freinet.de>.
- (new_thread): Rename poorly named local variable to
- "new_handler".
-
-Sat Oct 24 18:34:59 1998 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * pthread.def: New file for building the DLL.
-
-1998-10-05 Ben Elliston <bje at 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 at 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 at 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 at cygnus.com>
-
- * COPYING: Remove.
-
- * COPYING.LIB: Add. This library is under the LGPL.
-
-1998-09-13 Ben Elliston <bje at 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 at cygnus.com>
-
- * windows.h: No longer needed; remove.
-
- * windows.c: Likewise.
-
-Sat Sep 12 20:09:24 1998 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at cygnus.com>
-
- * fork.c (fork): Autoconfiscate.
-
-Sat Jul 25 00:00:13 1998 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au>
-
- * implement.h: Preliminary implementation specific defines.
-
- * create.c (pthread_create): Preliminary implementation.
-
-1998-07-11 Ben Elliston <bje at 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 at 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 at cygnus.com>
-
- * create.c (pthread_create): A dummy stub right now.
-
- * pthread.h (pthread_create): Add function prototype.
+2004-10-15 Ross Johnson <rpj at callisto.canberra.edu.au> + + * implement.h (pthread_mutex_t_): Use an event in place of + the POSIX semaphore. + * pthread_mutex_init.c: Create the event; remove semaphore init. + * pthread_mutex_destroy.c: Delete the event. + * pthread_mutex_lock.c: Replace the semaphore wait with the event wait. + * pthread_mutex_trylock.c: Likewise. + * pthread_mutex_timedlock.c: Likewise. + * pthread_mutex_unlock.c: Set the event. + +2004-10-14 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread_mutex_lock.c (pthread_mutex_lock): New algorithm using + Terekhov's xchg based variation of Drepper's cmpxchg model. + Theoretically, xchg uses fewer clock cycles than cmpxchg (using IA-32 + as a reference), however, in my opinion bus locking dominates the + equation on smp systems, so the model with the least number of bus + lock operations in the execution path should win, which is Terekhov's + variant. On IA-32 uni-processor systems, it's faster to use the + CMPXCHG instruction without locking the bus than to use the XCHG + instruction, which always locks the bus. This makes the two variants + equal for the non-contended lock (fast lane) execution path on up + IA-32. Testing shows that the xchg variant is faster on up IA-32 as + well if the test forces higher lock contention frequency, even though + kernel calls should be dominating the times (on up IA-32, both + variants used CMPXCHG instructions and neither locked the bus). + * pthread_mutex_timedlock.c pthread_mutex_timedlock(): Similarly. + * pthread_mutex_trylock.c (pthread_mutex_trylock): Similarly. + * pthread_mutex_unlock.c (pthread_mutex_unlock): Similarly. + * ptw32_InterlockedCompareExchange.c (ptw32_InterlockExchange): New + function. + (PTW32_INTERLOCKED_EXCHANGE): Sets up macro to use inlined + ptw32_InterlockedExchange. + * implement.h (PTW32_INTERLOCKED_EXCHANGE): Set default to + InterlockedExchange(). + * Makefile: Building using /Ob2 so that asm sections within inline + functions are inlined. + +2004-10-08 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread_mutex_destroy.c (pthread_mutex_destroy): Critical Section + element is no longer required. + * pthread_mutex_init.c (pthread_mutex_init): Likewise. + * pthread_mutex_lock.c (pthread_mutex_lock): New algorithm following + Drepper's paper at http://people.redhat.com/drepper/futex.pdf, but + using the existing semaphore in place of the futex described in the + paper. Idea suggested by Alexander Terekhov - see: + http://sources.redhat.com/ml/pthreads-win32/2003/msg00108.html + * pthread_mutex_timedlock.c pthread_mutex_timedlock(): Similarly. + * pthread_mutex_trylock.c (pthread_mutex_trylock): Similarly. + * pthread_mutex_unlock.c (pthread_mutex_unlock): Similarly. + * pthread_barrier_wait.c (pthread_barrier_wait): Use inlined version + of InterlockedCompareExchange() if possible - determined at + build-time. + * pthread_spin_destroy.c pthread_spin_destroy(): Likewise. + * pthread_spin_lock.c pthread_spin_lock():Likewise. + * pthread_spin_trylock.c (pthread_spin_trylock):Likewise. + * pthread_spin_unlock.c (pthread_spin_unlock):Likewise. + * ptw32_InterlockedCompareExchange.c: Sets up macro for inlined use. + * implement.h (pthread_mutex_t_): Remove Critical Section element. + (PTW32_INTERLOCKED_COMPARE_EXCHANGE): Set to default non-inlined + version of InterlockedCompareExchange(). + * private.c: Include ptw32_InterlockedCompareExchange.c first for + inlining. + * GNUmakefile: Add commandline option to use inlined + InterlockedCompareExchange(). + * Makefile: Likewise. + +2004-09-27 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread_mutex_lock.c (pthread_mutex_lock): Separate + PTHREAD_MUTEX_NORMAL logic since we do not need to keep or check some + state required by other mutex types; do not check mutex pointer arg + for validity - leave this to the system since we are only checking + for NULL pointers. This should improve speed of NORMAL mutexes and + marginally improve speed of other type. + * pthread_mutex_trylock.c (pthread_mutex_trylock): Likewise. + * pthread_mutex_unlock.c (pthread_mutex_unlock): Likewise; also avoid + entering the critical section for the no-waiters case, with approx. + 30% reduction in lock/unlock overhead for this case. + * pthread_mutex_timedlock.c (pthread_mutex_timedlock): Likewise; also + no longer keeps mutex if post-timeout second attempt succeeds - this + will assist applications that wish to impose strict lock deadlines, + rather than simply to escape from frozen locks. + +2004-09-09 Tristan Savatier <tristan at mpegtv.com> + * pthread.h (struct pthread_once_t_): Qualify the 'done' element + as 'volatile'. + * pthread_once.c: Concerned about possible race condition, + specifically on MPU systems re concurrent access to multibyte types. + [Maintainer's note: the race condition is harmless on SPU systems + and only a problem on MPU systems if concurrent access results in an + exception (presumably generated by a hardware interrupt). There are + other instances of similar harmless race conditions that have not + been identified as issues.] + +2004-09-09 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread.h: Declare additional types as volatile. + +2004-08-27 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread_barrier_wait.c (pthread_barrier_wait): Remove excessive code + by substituting the internal non-cancelable version of sem_wait + (ptw32_semwait). + +2004-08-25 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread_join.c (pthread_join): Rewrite and re-order the conditional + tests in an attempt to improve efficiency and remove a race + condition. + +2004-08-23 Ross Johnson <rpj at callisto.canberra.edu.au> + + * create.c (pthread_create): Don't create a thread if the thread + id pointer location (first arg) is inaccessible. A memory + protection fault will result if the thread id arg isn't an accessible + location. This is consistent with GNU/Linux but different to + Solaris or MKS (and possibly others), which accept NULL as meaning + 'don't return the created thread's ID'. Applications that run + using pthreads-win32 will run on all other POSIX threads + implementations, at least w.r.t. this feature. + + It was decided not to copy the Solaris et al behaviour because, + although it would have simplified some application porting (but only + from Solaris to Windows), the feature is not technically necessary, + and the alternative segfault behaviour helps avoid buggy application + code. + +2004-07-01 Anuj Goyal <anuj.goyal at gmail.com> + + * builddmc.bat: New; Windows bat file to build the library. + * config.h (__DMC__): Support for Digital Mars compiler. + * create.c (__DMC__): Likewise. + * pthread_exit.c (__DMC__): Likewise. + * pthread_join.c (__DMC__): Likewise. + * ptw32_threadDestroy.c (__DMC__): Likewise. + * ptw32_threadStart.c (__DMC__): Likewise. + * ptw32_throw.c (__DMC__): Likewise. + +2004-06-29 Anuj Goyal <anuj.goyal at gmail.com> + + * pthread.h (__DMC__): Initial support for Digital Mars compiler. + +2004-06-29 Will Bryant <will.bryant at ecosm.com> + + * README.Borland: New; description of Borland changes. + * Bmakefile: New makefile for the Borland make utility. + * ptw32_InterlockedCompareExchange.c: + Add Borland compatible asm code. + +2004-06-26 Jason Bard <BardJA at Npt.NUWC.Navy.Mil> + + * pthread.h (HAVE_STRUCT_TIMESPEC): If undefined, define it + to avoid timespec struct redefined errors elsewhere in an + application. + +2004-06-21 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread.h (PTHREAD_RECURSIVE_MUTEX_INITIALIZER): Mutex + initialiser added for compatibility with Linux threads and + others; currently not included in SUSV3. + * pthread.h (PTHREAD_ERRORCHECK_MUTEX_INITIALIZER): Likewise. + * pthread.h (PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP): Likewise. + * pthread.h (PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP): Likewise. + + * ptw32_mutex_check_need_init.c (ptw32_mutex_check_need_init): + Add new initialisers. + + * pthread_mutex_lock.c (pthread_mutex_lock): Check for new + initialisers. + * pthread_mutex_trylock.c (pthread_mutex_trylock): Likewise. + * pthread_mutex_timedlock.c (pthread_mutex_timedlock): Likewise. + * pthread_mutex_unlock.c (pthread_mutex_unlock): Likewise. + * pthread_mutex_destroy.c (pthread_mutex_destroy): Likewise. + +2004-05-20 Ross Johnson <rpj at callisto.canberra.edu.au> + + * README.NONPORTABLE: Document pthread_win32_test_features_np(). + * FAQ: Update various answers. + +2004-05-19 Ross Johnson <rpj at callisto.canberra.edu.au> + + * Makefile: Don't define _WIN32_WINNT on compiler command line. + * GNUmakefile: Likewise. + +2004-05-16 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread_cancel.c (pthread_cancel): Adapted to use auto-detected + QueueUserAPCEx features at run-time. + (ptw32_RegisterCancelation): Drop in replacement for QueueUserAPCEx() + if it can't be used. Provides older style non-preemptive async + cancelation. + * pthread_win32_attach_detach_np.c (pthread_win32_attach_np): + Auto-detect quserex.dll and the availability of alertdrv.sys; + initialise and close on process attach/detach. + * global.c (ptw32_register_cancelation): Pointer to either + QueueUserAPCEx() or ptw32_RegisterCancelation() depending on + availability. QueueUserAPCEx makes pre-emptive async cancelation + possible. + * implement.h: Add definitions and prototypes related to QueueUserAPC. + +2004-05-16 Panagiotis E. Hadjidoukas <peh at hpclab.ceid.upatras.gr> + + * QueueUserAPCEx (separate contributed package): Provides preemptive + APC feature. + * pthread_cancel.c (pthread_cancel): Initial integration of + QueueUserAPCEx into pthreads-win32 to provide true pre-emptive + async cancelation of threads, including blocked threads. + +2004-05-06 Makoto Kato <raven at oldskool.jp> + + * pthread.h (DWORD_PTR): Define typedef for older MSVC. + * pthread_cancel.c (AMD64): Add architecture specific Context register. + * ptw32_getprocessors.c: Use correct types (DWORD_PTR) for mask + variables. + +2004-04-06 P. van Bruggen <pietvb at newbridges.nl> + + * ptw32_threadDestroy.c: Destroy threadLock mutex to + close a memory leak. + +2004-02-13 Gustav Hallberg <gustav at virtutech.com> + + * pthread_equal.c: Remove redundant equality logic. + +2003-12-10 Philippe Di Cristo <philipped at voicebox.com> + + * sem_timedwait.c (sem_timedwait): Fix timeout calculations. + +2003-10-20 Alexander Terekhov <TEREKHOV at de.ibm.com> + + * pthread_mutex_timedlock.c (ptw32_semwait): Move to individual module. + * ptw32_semwait.c: New module. + * pthread_cond_wait.c (ptw32_cond_wait_cleanup): Replace cancelable + sem_wait() call with non-cancelable ptw32_semwait() call. + * pthread.c (private.c): Re-order for inlining. GNU C warned that + function ptw32_semwait() was defined 'inline' after it was called. + * pthread_cond_signal.c (ptw32_cond_unblock): Likewise. + * pthread_delay_np.c: Disable Watcom warning with comment. + * *.c (process.h): Remove include from .c files. This is conditionally + included by the common project include files. + +2003-10-20 James Ewing <james.ewing at sveasoft.com> + + * ptw32_getprocessors.c: Some Win32 environments don't have + GetProcessAffinityMask(), so always return CPU count = 1 for them. + * config.h (NEED_PROCESSOR_AFFINITY_MASK): Define for WinCE. + +2003-10-15 Ross Johnson <ross at callisto.canberra.edu.au> + + * Re-indented all .c files using default GNU style to remove assorted + editor ugliness (used GNU indent utility in default style). + +2003-10-15 Alex Blanco <Alex.Blanco at motorola.com> + + * sem_init.c (sem_init): Would call CreateSemaphore even if the sema + struct calloc failed; was not freeing calloced memory if either + CreateSemaphore or CreateEvent failed. + +2003-10-14 Ross Johnson <ross at callisto.canberra.edu.au> + + * pthread.h: Add Watcom compiler compatibility. Esssentially just add + the cdecl attribute to all exposed function prototypes so that Watcom + generates function call code compatible with non-Watcom built libraries. + By default, Watcom uses registers to pass function args if possible rather + than pushing to stack. + * semaphore.h: Likewise. + * sched.h: Likewise. + * pthread_cond_wait.c (ptw32_cond_wait_cleanup): Define with cdecl attribute + for Watcom compatibility. This routine is called via pthread_cleanup_push so + it had to match function arg definition. + * Wmakefile: New makefile for Watcom builds. + +2003-09-14 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread_setschedparam.c (pthread_setschedparam): Attempt to map + all priority levels between max and min (as returned by + sched_get_priority_min/max) to reasonable Win32 priority levels - i.e. + levels between THREAD_PRIORITY_LOWEST/IDLE to THREAD_PRIORITY_LOWEST and + between THREAD_PRIORITY_HIGHEST/TIME_CRITICAL to THREAD_PRIORITY_HIGHEST + while others remain unchanged; record specified thread priority level + for return by pthread_getschedparam. + + Note that, previously, specified levels not matching Win32 priority levels + would silently leave the current thread priority unaltered. + + * pthread_getschedparam.c (pthread_getschedparam): Return the priority + level specified by the latest pthread_setschedparam or pthread_create rather + than the actual running thread priority as returned by GetThreadPriority - as + required by POSIX. I.e. temporary or adjusted actual priority levels are not + returned by this routine. + + * pthread_create.c (pthread_create): For priority levels specified via + pthread attributes, attempt to map all priority levels between max and + min (as returned by sched_get_priority_min/max) to reasonable Win32 + priority levels; record priority level given via attributes, or + inherited from parent thread, for later return by pthread_getschedparam. + + * ptw32_new.c (ptw32_new): Initialise pthread_t_ sched_priority element. + + * pthread_self.c (pthread_self): Set newly created implicit POSIX thread + sched_priority to Win32 thread's current actual priority. Temporarily + altered priorities can't be avoided in this case. + + * implement.h (struct pthread_t_): Add new sched_priority element. + +2003-09-12 Ross Johnson <rpj at callisto.canberra.edu.au> + + * sched_get_priority_min.c (sched_get_priority_min): On error should return -1 + with errno set. + * sched_get_priority_max.c (sched_get_priority_max): Likewise. + +2003-09-03 Ross Johnson <rpj at callisto.canberra.edu.au> + + * w32_cancelableWait.c (ptw32_cancelable_wait): Allow cancelation + of implicit POSIX threads as well. + +2003-09-02 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread_win32_attach_detach_np.c (pthread_win32_thread_detach_np): + Add comment. + + * pthread_exit.c (pthread_exit): Fix to recycle the POSIX thread handle in + addition to calling user TSD destructors. Move the implicit POSIX thread exit + handling to ptw32_throw to centralise the logic. + + * ptw32_throw.c (ptw32_throw): Implicit POSIX threads have no point + to jump or throw to, so cleanup and exit the thread here in this case. For + processes using the C runtime, the exit code will be set to the POSIX + reason for the throw (i.e. PTHREAD_CANCEL or the value given to pthread_exit). + Note that pthread_exit() already had similar logic, which has been moved to + here. + + * ptw32_threadDestroy.c (ptw32_threadDestroy): Don't close the Win32 handle + of implicit POSIX threads - expect this to be done by Win32? + +2003-09-01 Ross Johnson <rpj at callisto.canberra.edu.au> + + * pthread_self.c (pthread_self): The newly aquired pthread_t must be + assigned to the reuse stack, not freed, if the routine fails somehow. + +2003-08-13 Ross Johnson <rpj at ise.canberra.edu.au> + + * pthread_getschedparam.c (pthread_getschedparam): An invalid thread ID + parameter was returning an incorrect error value; now uses a more exhaustive + check for validity. + + * pthread_setschedparam.c (pthread_setschedparam): Likewise. + + * pthread_join.c (pthread_join): Now uses a more exhaustive + check for validity. + + * pthread_detach.c (pthread_detach): Likewise. + + * pthread_cancel.c (pthread_cancel): Likewise. + + * ptw32_threadDestroy.c (ptw32_threadDestroy): pthread_t structs are + never freed - push them onto a stack for reuse. + + * ptw32_new.c (ptw32_new): Check for reusable pthread_t before dynamically + allocating new memory for the struct. + + * pthread_kill.c (pthread_kill): New file; new routine; takes only a zero + signal arg so that applications can check the thread arg for validity; checks + that the underlying Win32 thread HANDLE is valid. + + * pthread.h (pthread_kill): Add prototype. + + * ptw32_reuse.c (ptw32_threadReusePop): New file; new routine; pop a + pthread_t off the reuse stack. pthread_t_ structs that have been destroyed, i.e. + have exited detached or have been joined, are cleaned up and put onto a reuse + stack. Consequently, thread IDs are no longer freed once calloced. The library + will attempt to get a struct off this stack before asking the system to alloc + new memory when creating threads. The stack is guarded by a global mutex. + (ptw32_threadReusePush): New routine; push a pthread_t onto the reuse stack. + + * implement.h (ptw32_threadReusePush): Add new prototype. + (ptw32_threadReusePop): Likewise. + (pthread_t): Add new element. + + * ptw32_processTerminate.c (ptw32_processTerminate): Delete the thread + reuse lock; free all thread ID structs on the thread reuse stack. + + * ptw32_processInitialize.c (ptw32_processInitialize): Initialise the + thread reuse lock. + +2003-07-19 Ross Johnson <rpj at ise.canberra.edu.au> + + * GNUmakefile: modified to work under MsysDTK environment. + * pthread_spin_lock.c (pthread_spin_lock): Check for NULL arg. + * pthread_spin_unlock.c (pthread_spin_unlock): Likewise. + * pthread_spin_trylock.c (pthread_spin_trylock): Likewise; + fix incorrect pointer value if lock is dynamically initialised by + this function. + * sem_init.c (sem_init): Initialise sem_t value to quell compiler warning. + * sem_destroy.c (sem_destroy): Likewise. + * ptw32_threadStart.c (non-MSVC code sections): Include <exception> rather + than old-style <new.h>; fix all std:: namespace entities such as + std::terminate_handler instances and associated methods. + * ptw32_callUserDestroyRoutines.c (non-MSVC code sections): Likewise. + +2003-06-24 Piet van Bruggen <pietvb at newbridges.nl> + + * pthread_spin_destroy.c (pthread_spin_destroy): Was not freeing the + spinlock struct. + +2003-06-22 Nicolas Barry <boozai at yahoo.com> + + * pthread_mutex_destroy.c (pthread_mutex_destroy): When called + with a recursive mutex that was locked by the current thread, the + function was failing with a success return code. + +2003-05-15 Steven Reddie <Steven.Reddie at ca.com> + + * pthread_win32_attach_detach_np.c (pthread_win32_process_detach_np): + NULLify ptw32_selfThreadKey after the thread is destroyed, otherwise + destructors calling pthreads routines might resurrect it again, creating + memory leaks. Call the underlying Win32 Tls routine directly rather than + pthread_setspecific(). + (pthread_win32_thread_detach_np): Likewise. + +2003-05-14 Viv <vcotirlea at hotmail.com> + + * pthread.dsp: Change /MT compile flag to /MD. + +2003-03-04 Alexander Terekhov <TEREKHOV at de.ibm.com> + + * pthread_mutex_timedlock.c (pthread_mutex_timedlock): Fix failure to + set ownership of mutex on second grab after abstime timeout. + - bug reported by Robert Strycek <strycek at posam.sk> + +2002-12-17 Thomas Pfaff <tpfaff at gmx.net> + + * pthread_mutex_lock.c (ptw32_semwait): New static routine to provide + a non-cancelable sem_wait() function. This is consistent with the + way that pthread_mutex_timedlock.c does it. + (pthread_mutex_lock): Use ptw32_semwait() instead of sem_wait(). + +2002-12-11 Thomas Pfaff <tpfaff at gmx.net> + + * pthread_mutex_trylock.c: Should return EBUSY rather than EDEADLK. + * pthread_mutex_destroy.c: Remove redundant ownership test (the + trylock call does this for us); do not destroy a recursively locked + mutex. + +2002-09-20 Michael Johnson <michaelj at maine.rr.com> + + * pthread_cond_destroy.c (pthread_cond_destroy): + When two different threads exist, and one is attempting to + destroy a condition variable while the other is attempting to + initialize a condition variable that was created with + PTHREAD_COND_INITIALIZER, a deadlock can occur. Shrink + the ptw32_cond_list_lock critical section to fix it. + +2002-07-31 Ross Johnson <rpj at special.ise.canberra.edu.au> + + * ptw32_threadStart.c (ptw32_threadStart): Thread cancelLock + destruction moved to ptw32_threadDestroy(). + + * ptw32_threadDestroy.c (ptw32_threadDestroy): Destroy + the thread's cancelLock. Moved here from ptw32_threadStart.c + to cleanup implicit threads as well. + +2002-07-30 Alexander Terekhov <TEREKHOV at de.ibm.com> + + * pthread_cond_wait.c (ptw32_cond_wait_cleanup): + Remove code designed to avoid/prevent spurious wakeup + problems. It is believed that the sem_timedwait() call + is consuming a CV signal that it shouldn't and this is + breaking the avoidance logic. + +2002-07-30 Ross Johnson <rpj at ise.canberra.edu.au> + + * sem_timedwait.c (sem_timedwait): Tighten checks for + unreasonable abstime values - that would result in + unexpected timeout values. + + * w32_CancelableWait.c (ptw32_cancelable_wait): + Tighten up return value checking and add comments. + + +2002-06-08 Ross Johnson <rpj at special.ise.canberra.edu.au> + + * sem_getvalue.c (sem_getvalue): Now returns a value for the + NEED_SEM version (i.e. earlier versions of WinCE). + + +2002-06-04 Rob Fanner <rfanner at stonethree.com> + + * sem_getvalue.c (sem_getvalue): The Johnson M. Hart + approach didn't work - we are forced to take an + intrusive approach. We try to decrement the sema + and then immediately release it again to get the + value. There is a small probability that this may + block other threads, but only momentarily. + +2002-06-03 Ross Johnson <rpj at ise.canberra.edu.au> + + * sem_init.c (sem_init): Initialise Win32 semaphores + to _POSIX_SEM_VALUE_MAX (which this implementation + defines in pthread.h) so that sem_getvalue() can use + the trick described in the comments in sem_getvalue(). + * pthread.h (_POSIX_SEM_VALUE_MAX): Defined. + (_POSIX_SEM_NSEMS_MAX): Defined - not used but may be + useful for source code portability. + +2002-06-03 Rob Fanner <rfanner at stonethree.com> + + * sem_getvalue.c (sem_getvalue): Did not work on NT. + Use approach suggested by Johnson M. Hart in his book + "Win32 System Programming". + +2002-02-28 Ross Johnson <rpj at setup1.ise.canberra.edu.au> + + * errno.c: Compiler directive was incorrectly including code. + * pthread.h: Conditionally added some #defines from config.h + needed when not building the library. e.g. NEED_ERRNO, NEED_SEM. + (PTW32_DLLPORT): Now only defined if _DLL defined. + (_errno): Compiler directive was incorrectly including prototype. + * sched.h: Conditionally added some #defines from config.h + needed when not building the library. + * semaphore.h: Replace an instance of NEED_SEM that should + have been NEED_ERRNO. This change currently has nil effect. + + * GNUmakefile: Correct some recent changes. + + * Makefile: Add rule to generate pre-processor output. + +2002-02-23 Ross Johnson <rpj at setup1.ise.canberra.edu.au> + + * pthread_rwlock_timedrdlock.c: New - untested. + * pthread_rwlock_timedwrlock.c: New - untested. + + * 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at special.ise.canberra.edu.au> + + * pthread.dsp (SOURCE): Add missing source files. + +2002-01-08 Ross Johnson <rpj at 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 at gmx.net>, Alexander Terekhov <TEREKHOV at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at setup1.ise.canberra.edu.au> + + * spin.c (pthread_spin_trylock): Was not returning + EBUSY for multi CPU machines. + +2001-08-24 Ross Johnson <rpj at 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 at 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 at hawksoft.com> + + * tsd.c (pthread_getspecific): Preserve the last + winsock error [from WSAGetLastError()]. + +2001-07-18 Scott McCaskill <scott at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at setup1.ise.canberra.edu.au> + + * pthread.h (_POSIX_READER_WRITER_LOCKS): Define it + if not already defined. + +2001-07-01 Alexander Terekhov <TEREKHOV at 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 at 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 at 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 at pdb4.siemens.de> + + * create.c (pthread_create): Set thread priority from + thread attributes. + +2001-06-18 Ross Johnson <rpj at 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 at 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 at 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 at 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 at setup1.ise.canberra.edu.au> + + * mutex.c (pthread_mutexattr_init): Remove + ptw32_mutex_default_kind. + +2001-06-05 Ross Johnson <rpj at 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 at 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 at de.ibm.com>, Louis Thomas <lthomas at 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 at 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 at 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 at 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 at 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 at 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 at 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 at special.ise.canberra.edu.au> + + * FAQ: Update Answer 6 re getting a fully working + Mingw32 built library. + +2000-10-10 Steven Reddie <smr at essemer.com.au> + + * misc.c (pthread_self): Restore Win32 "last error" + cleared by TlsGetValue() call in + pthread_getspecific() + +2000-09-20 Arthur Kantor <akantor at 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 at 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 at special.ise.canberra.edu.au> + + * pthread.h (ctime_r): Fix arg. + +2000-09-08 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at special.ise.canberra.edu.au> + + * pthread.h: Remove #warning - VC++ doesn't accept it. + +2000-08-05 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at special.ise.canberra.edu.au> + + * FAQ: Added Q5 and Q6. + +2000-07-21 David Baggett <dmb at 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 at 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 at 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 at 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 at 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 at group2000.nl> + + * Makefile: Remove inconsistencies in 'cl' args + +2000-01-04 Ross Johnson <rpj at 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 at 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 at 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 at nbnet.nb.ca>, Erik Hensema <erik.hensema at 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 at 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 at 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 at 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 at 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 at 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 at group2000.nl> + + * pthread.h (ctime_r): Fix incorrect argument "_tm" + +1999-10-21 Aurelio Medina <aureliom at 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 at 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 at xiphos.ca>, Peter Slacik <Peter.Slacik at 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 at 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 at 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 at 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 at tatramed.sk> + + * mutex.c (pthread_mutex_destroy): Free mutex memory. + +1999-08-22 Ross Johnson <rpj at ixobrychus.canberra.edu.au> + + * exit.c (pthread_exit): Fix reference to potentially + uninitialised pointer. + +1999-08-21 Ross Johnson <rpj at 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 at ixobrychus.canberra.edu.au> + + * private.c (ptw32_threadStart): Return exit status from + the application thread startup routine. + - Milan Gardian <mg at tatramed.sk> + +1999-08-18 John Bossom <john.Bossom at 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 at 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 at 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 at 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 at 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 at 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 at xiphos.ca>, John Bossom <John.Bossom at 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 at 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 at ixobrychus.canberra.edu.au> + + * semaphore.h (mode_t): Conditionally typedef it. + +Fri May 28 13:33:05 1999 Mark E. Armstrong <avail at pacbell.net> + + * condvar.c (pthread_cond_broadcast): Fix possible memory fault + +Thu May 27 13:08:46 1999 Peter Slacik <Peter.Slacik at tatramed.sk> + + * condvar.c (pthread_cond_broadcast): Fix logic bug + +Thu May 27 13:08:46 1999 Bossom, John <John.Bossom at Cognos.COM> + + * condvar.c (pthread_cond_broadcast): optimise sem_post loop + +Fri May 14 12:13:18 1999 Mike Russo <miker at eai.com> + + * attr.c (pthread_attr_setdetachstate): Fix logic bug + +Sat May 8 09:42:30 1999 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au> + + * Makefile.in (OBJS): Add errno.o. + +Fri Apr 2 11:08:50 1999 Ross Johnson <rpj at 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 at 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 at iki.fi> + + * semaphore.c (ptw32_sem_timedwait): Check for negative + milliseconds. + +Wed Mar 24 11:32:07 1999 John Bossom <jebossom at 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 at swan.canberra.edu.au> + + * cancel.c (comments): Update and cleanup. + +Fri Mar 19 09:12:59 1999 Ross Johnson <rpj at ixobrychus.canberra.edu.au> + + * private.c (ptw32_threadStart): status returns PTHREAD_CANCELED. + + * pthread.h (PTHREAD_CANCELED): defined. + +Tue Mar 16 1999 Ross Johnson <rpj at ixobrychus.canberra.edu.au> + + * all: Add GNU LGPL and Copyright and Warranty. + +Mon Mar 15 00:20:13 1999 Ross Johnson <rpj at 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 at 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 at 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 at ixobrychus.canberra.edu.au> + + * misc.c (CancelableWait): Undo changes from Mar 8 and 7. + +Mon Mar 8 11:18:59 1999 Ross Johnson <rpj at 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 at 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 at ixobrychus.canberra.edu.au> + + * implement.h: Undate comments. + +Sun Feb 21 1999 Ross Johnson <rpj at ixobrychus.canberra.edu.au> + + * pthread.h (PTHREAD_MUTEX_INITIALIZER): missing braces around + cs element initialiser. + +1999-02-21 Ben Elliston <bje at 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 at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au> + + * configure: Various temporary changes. + - Kevin Ruland <Kevin.Ruland at 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 at swan.canberra.edu.au> + + * semaphore.c: Comment format changes. + +Thu Feb 4 10:07:28 1999 Ross Johnson <rpj at 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 at 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 at 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 at swan.canberra.edu.au> + + * implement.h: Add #include <pthread.h>. + Change sem_t to ptw32_sem_t. + +Tue Feb 2 18:07:43 1999 Kevin Ruland <Kevin.Ruland at 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 at 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 at ixobrychus.canberra.edu.au> + + * semaphore.c (sem_wait): Remove second arg to + pthreadCancelableWait() call. + +Sat Jan 23 17:36:40 1999 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au> + + * condvar.c (cond_timedwait): Remove comment. + +Fri Jan 15 15:41:28 1999 Ross Johnson <rpj at 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 at 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 at ixobrychus.canberra.edu.au> + + * build.bat: Delete old binaries before compiling/linking. + +Tue Jan 12 09:58:38 1999 Tor Lillqvist <tml at 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 at 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 at 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 at 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 at 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 at hem2.passagen.se>. + +Tue Jan 5 16:33:04 1999 Ross Johnson <rpj at 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 at toilet.to.cygnus.com> + + * README: Update info about subscribing to the mailing list. + +Mon Jan 4 11:23:40 1999 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at ise.canberra.edu.au> + + * README: Correct cygwin32 compatibility statement. + +Sun Nov 15 21:24:06 1998 Ross Johnson <rpj at ixobrychus.canberra.edu.au> + + * cleanup.c (ptw32_destructor_run_all): Declare missing void * arg. + Fixup CVS merge conflicts. + +1998-10-30 Ben Elliston <bje at 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 at swan.canberra.edu.au> + + * cleanup.c (ptw32_handler_push): Fixed bug appending new + handler to list reported by Peter Slacik + <Peter.Slacik at leibinger.freinet.de>. + (new_thread): Rename poorly named local variable to + "new_handler". + +Sat Oct 24 18:34:59 1998 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au> + + * pthread.def: New file for building the DLL. + +1998-10-05 Ben Elliston <bje at 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 at 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 at 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 at cygnus.com> + + * COPYING: Remove. + + * COPYING.LIB: Add. This library is under the LGPL. + +1998-09-13 Ben Elliston <bje at 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 at cygnus.com> + + * windows.h: No longer needed; remove. + + * windows.c: Likewise. + +Sat Sep 12 20:09:24 1998 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at cygnus.com> + + * fork.c (fork): Autoconfiscate. + +Sat Jul 25 00:00:13 1998 Ross Johnson <rpj at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at ixobrychus.canberra.edu.au> + + * implement.h: Preliminary implementation specific defines. + + * create.c (pthread_create): Preliminary implementation. + +1998-07-11 Ben Elliston <bje at 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 at 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 at cygnus.com> + + * create.c (pthread_create): A dummy stub right now. + + * pthread.h (pthread_create): Add function prototype. |