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conditional compilation; refinements; bug fixes. See the ChangeLog.
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Remove unused autoconf files;
Add the file COPYING, which describes the pthread-win32 license
relative to the FSF LGPL.
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winsock error [from WSAGetLastError()].
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* 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 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
Contributed by - Milan Gardian <Milan.Gardian@LEIBINGER.com>
* Makefile: fix typo.
* pthreads.h: Fix problems with stdcall/cdecl conventions, in particular
remove the need for PT_STDCALL everywhere; remove warning supression.
* (errno): Fix the longstanding "inconsistent dll linkage" problem
with errno; now also works with /MD debugging libs -
warnings emerged when compiling pthreads library with /MD (or /MDd)
compiler switch, instead of /MT (or /MTd) (i.e. when compiling pthreads
using Multithreaded DLL CRT instead of Multithreaded statically linked
CRT).
* create.c (pthread_create): Likewise; fix typo.
* private.c (ptw32_threadStart): Eliminate use of terminate() which doesn't
throw exceptions.
* Remove unnecessary #includes from a number of modules -
[I had to #include malloc.h in implement.h for gcc - rpj].
2001-05-29 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
Contributed by - Thomas Pfaff <tpfaff@gmx.net>
* pthread.h (PTHREAD_MUTEX_DEFAULT): New; equivalent to
PTHREAD_MUTEX_DEFAULT_NP.
* (PTHREAD_MUTEX_NORMAL): Similarly.
* (PTHREAD_MUTEX_ERRORCHECK): Similarly.
* (PTHREAD_MUTEX_RECURSIVE): Similarly.
* (pthread_mutex_setdefaultkind_np): New; Linux compatibility stub
for pthread_mutexattr_settype.
* (pthread_mutexattr_getkind_np): New; Linux compatibility stub
for pthread_mutexattr_gettype.
* mutex.c (pthread_mutexattr_settype): New; allow
the following types of mutex:
PTHREAD_MUTEX_DEFAULT_NP
PTHREAD_MUTEX_NORMAL_NP
PTHREAD_MUTEX_ERRORCHECK_NP
PTHREAD_MUTEX_RECURSIVE_NP
* Note that PTHREAD_MUTEX_DEFAULT is equivalent to
PTHREAD_MUTEX_NORMAL - ie. mutexes should no longer
be recursive by default, and a thread will deadlock if it
tries to relock a mutex it already owns. This is inline with
other pthreads implementations.
* (pthread_mutex_lock): Process the lock request
according to the mutex type.
* (pthread_mutex_init): Eliminate use of Win32 mutexes as the
basis of POSIX mutexes - instead, a combination of one critical section
and one semaphore are used in conjunction with Win32 Interlocked* routines.
* (pthread_mutex_destroy): Likewise.
* (pthread_mutex_lock): Likewise.
* (pthread_mutex_trylock): Likewise.
* (pthread_mutex_unlock): Likewise.
* Use longjmp/setjmp to implement cancelation when building the library
using a C compiler which doesn't support exceptions, e.g. gcc -x c (note
that gcc -x c++ uses exceptions).
* Also fixed some of the same typos and eliminated PT_STDCALL as
Milan Gardian's patches above.
2001-02-07 Ross Johnson <rpj@special.ise.canberra.edu.au>
Contributed by - Alexander Terekhov <TEREKHOV@de.ibm.com>
* rwlock.c: Revamped.
* implement.h (pthread_rwlock_t_): Redefined.
This implementation does not have reader/writer starvation problem.
Rwlock attempts to behave more like a normal mutex with
races and scheduling policy determining who is more important;
It also supports recursive locking,
has less synchronization overhead (no broadcasts at all,
readers are not blocked on any condition variable) and seem to
be faster than the current implementation [W98 appears to be
approximately 15 percent faster at least - on top of speed increase
from Thomas Pfaff's changes to mutex.c - rpj].
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2000-12-29 Ross Johnson <rpj@special.ise.canberra.edu.au>
* Makefile: Back-out "for" loops which don't work.
* GNUmakefile: Remove the fake.a target; add the "realclean"
target; don't remove built libs under the "clean" target.
* config.h: Add a guard against multiple inclusion.
* semaphore.h: Add some defines from config.h to make
semaphore.h independent of config.h when building apps.
* pthread.h (_errno): Back-out previous fix until we know how to
fix it properly.
* implement.h (lockCount): Add missing element to pthread_mutex_t_.
* sync.c (pthread_join): Spelling fix in comment.
* private.c (ptw32_threadStart): Reset original termination
function (C++).
(ptw32_threadStart): Cleanup detached threads early in case
the library is statically linked.
(ptw32_callUserDestroyRoutines): Remove [SEH] __try block from
destructor call so that unhandled exceptions will be passed through
to the system; call terminate() from [C++] try block for the same
reason.
* tsd.c (pthread_getspecific): Add comment.
* mutex.c (pthread_mutex_init): Initialise new elements in
pthread_mutex_t.
(pthread_mutex_unlock): Invert "pthread_equal()" test.
2000-12-28 Ross Johnson <rpj@special.ise.canberra.edu.au>
* semaphore.c (mode_t): Use ifndef HAVE_MODE_T to include definition.
* config.h.in (HAVE_MODE_T): Added.
(_UWIN): Start adding defines for the UWIN package.
./tests/ChangeLog:
2000-12-29 Ross Johnson <rpj@special.ise.canberra.edu.au>
* GNUmakefile: Add mutex4 test; ensure libpthreadw32.a is
removed for "clean" target.
* Makefile: Add mutex4 test.
* exception3.c: Remove SEH code; automatically pass the test
under SEH (which is an N/A environment).
* mutex4.c: New test.
* eyal1.c (do_work_unit): Add a dummy "if" to force the
optimiser to retain code; reduce thread work loads.
* condvar8.c (main): Add an additional "assert" for debugging;
increase pthread_cond_signal timeout.
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* private.c (ptw32_throw): Fix exception test;
move exceptionInformation declaration.
* tsd.c (pthread_key_create): newkey wrongly declared.
* pthread.h: Fix comment block.
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* 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.
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* 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).
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* tsd.c (pthread_create_key): Initialise temporary
key before returning it's address to avoid race
conditions.
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* sched.c (sched_get_priority_max): Handle different WinCE and
Win32 priority values together.
(sched_get_priority_min): Ditto.
- Tristan Savatier <tristan@mpegtv.com>
* 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 (_pthread_threadStart): Initialise ei[].
(_pthread_threadStart): When beginthread is used to start the
thread, force waiting until the creator thread had the
thread handle.
* cancel.c (_pthread_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 (_pthread_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 (_pthread_new): Change "new" variable to "t" to avoid
confusion with the C++ keyword of the same name.
* condvar.c (cond_wait_cleanup): Initialise lastWaiter variable.
(cond_timedwait): Remove unused local variables. to avoid
compiler warnings.
* dll.c (dllMain): Remove 2000-07-21 change - problem
appears to be in pthread_create().
2000-07-22 Ross Johnson <rpj@special.ise.canberra.edu.au>
* tsd.c (pthread_key_create): If a destructor was given
and the pthread_mutex_init failed, then would try to
reference a NULL pointer (*key); eliminate this section of
code by using a dynamically initialised mutex
(PTHREAD_MUTEX_INITIALIZER).
* tsd.c (pthread_setspecific): Return an error if
unable to set the value; simplify cryptic conditional.
* tsd.c (pthread_key_delete): Locking threadsLock relied
on mutex_lock returning an error if the key has no destructor.
ThreadsLock is only initialised if the key has a destructor.
Making this mutex a static could reduce the number of mutexes
used by an application since it is actually created only at
first use and it's often destroyed soon after.
2000-07-22 Ross Johnson <rpj@special.ise.canberra.edu.au>
* FAQ: Added Q5 and Q6.
tests/ChangeLog:
2000-07-25 Ross Johnson <rpj@special.ise.canberra.edu.au>
* runtest.bat: modified to work under W98.
* runall.bat: Add new tests; modified to work under W98.
It was ok under NT.
* Makefile: Add new tests.
* exception1.c: New; Test passing exceptions back to the
application and retaining library internal exceptions.
* join0.c: New; Test a single join.
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* dll.c (dllMain): Remove 2000-07-21 change - problem
appears to be in pthread_create().
2000-07-21 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
* create.c (pthread_create): Set threadH to 0 (zero)
everywhere. Some assignments were using NULL. Maybe
it should be NULL everywhere - need to check. (I know
they are nearly always the same thing - but not by
definition.)
* 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.
- "David Baggett" <dmb@itasoftware.com>
* 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.
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* 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.
- Tristan Savatier <tristan@mpegtv.com>
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* *.c (comments): Remove individual attributions - these are
documented sufficiently elsewhere.
* implement.h (pthread.h): Remove extraneous include.
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* all: Add GNU LGPL and Copyright and Warranty.
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Sun Jan 24 01:34:52 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* semaphore.c (sem_wait): Remove second arg to
pthreadCancelableWait() call.
Fri Jan 22 14:31:59 1999 Ross Johnson <rpj@swan.canberra.edu.au>
* Makefile.in (CFLAGS): Remove -fhandle-exceptions. Not needed
with egcs. Add -g for debugging.
* create.c (pthread_create): Replace __stdcall with PT_STDCALL
macro. This is a hack and must be fixed.
* misc.c (CancelableWait): Remove redundant statement.
* mutex.c (pthread_mutexattr_init): Cast calloc return value.
* misc.c (CancelableWait): Add cast.
(pthread_self): Add cast.
* exit.c (pthread_exit): Add cast.
* condvar.c (pthread_condattr_init): Cast calloc return value.
* cleanup.c: Reorganise conditional compilation.
* attr.c (pthread_attr_init): Remove unused 'result'.
Cast malloc return value.
* private.c (_pthread_callUserDestroyRoutines): Redo conditional
compilation.
* misc.c (CancelableWait): C++ version uses 'throw'.
* cancel.c (pthread_testcancel): Ditto.
* implement.h (class pthread_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.
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This will be tagged as snapshot-1999-01-04-1305
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* buildlib.bat: Fix args to CL when building the .DLL
* cleanup.c (_pthread_destructor_run_all): Fix TSD key management.
This is a tidy-up before TSD and Thread management is completely
replaced by John Bossom's much more elegant code.
* tsd.c (pthread_key_create): Fix TSD key management.
* global.c (_pthread_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.
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* 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.
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that hadn't been checked in. Those are to finish off the original TSD management
scheme which will now start to be replaced by John Bossom's implementation.
Anders' description of his changes:-
Fixes the problem with
`TryEnterCriticalSection' on w95 systems. Instead
of directly calling `TryEnterCriticalSection' it
tries to get a pointer at DLL startup and only calls
the function if it exists. See ChangeLog for things
changed.
1998-12-05 Anders Norlander <anorland@hem2.passagen.se>
* implement.h (_pthread_try_enter_critical_section): New extern
* dll.c (_pthread_try_enter_critical_section): New pointer to
TryEnterCriticalSection if it exists; otherwise NULL.
* dll.c (PthreadsEntryPoint):
Initialize _pthread_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 _pthread_try_enter_critical_section is valid
pointer to a function. Call _pthread_try_enter_critical_section
instead of TryEnterCriticalSection to avoid errors on Win95.
Sun Nov 15 21:24:06 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* cleanup.c (_pthread_destructor_run_all): Declare missing void * arg.
Fixup CVS merge conflicts.
Fri Oct 30 15:15:50 1998 Ross Johnson <rpj@swan.canberra.edu.au>
* cleanup.c (_pthread_handler_push): Fixed bug appending new
handler to list reported by Peter Slacik
<Peter.Slacik@leibinger.freinet.de>.
(new_thread): Rename poorly named local variable to
"new_handler".
Sat Oct 24 18:34:59 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* global.c: Add TSD key management array and index declarations.
* implement.h: Ditto for externs.
Fri Oct 23 00:08:09 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* implement.h (_PTHREAD_TSD_KEY_REUSE): Add enum.
* private.c (_pthread_delete_thread): Add call to
_pthread_destructor_run_all() to clean up the threads keys.
* cleanup.c (_pthread_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.
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* tsd.c: Add description of pthread_key_delete() from the
standard as a comment.
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* 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.
Yet again.
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* tsd.c (pthread_setspecific): Fix type declaration and cast.
(pthread_getspecific): Ditto.
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* global.c (_pthread_tsd_key_table): Fix declaration.
* implement.h(_pthread_TSD_keys_TlsIndex): Add missing extern.
(_pthread_tsd_mutex): Ditto.
* create.c (_pthread_start_call): Fix "keys" array declaration.
Add comment.
* tsd.c (pthread_setspecific): Fix type declaration and cast.
(pthread_getspecific): Ditto.
* cleanup.c (_pthread_destructor_run_all): Declare missing loop
counter.
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* private.c (_pthread_new_thread): Increment _pthread_threads_count.
(_pthread_delete_thread): Decrement _pthread_threads_count.
Remove some comments.
* exit.c (_pthread_exit): : Fix two pthread_mutex_lock() calls that
should have been pthread_mutex_unlock() calls.
(_pthread_vacuum): Remove call to _pthread_destructor_pop_all().
* create.c (pthread_create): Fix two pthread_mutex_lock() calls that
should have been pthread_mutex_unlock() calls.
* global.c (_pthread_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.
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* implement.h (_pthread_tsd_key_table): New.
* create.c (_pthread_start_call): Initialise per-thread TSD keys
to NULL.
* misc.c (pthread_once): Correct typo in comment.
* implement.h (_pthread_destructor_push): Remove.
(_pthread_destructor_pop): Remove.
(_pthread_destructor_run_all): Rename from _pthread_destructor_pop_all.
(_PTHREAD_TSD_KEY_DELETED): Add enum.
(_PTHREAD_TSD_KEY_INUSE): Add enum.
* cleanup.c (_pthread_destructor_push): Remove.
(_pthread_destructor_pop): Remove.
(_pthread_destructor_run_all): Totally revamped TSD.
* dll.c (_pthread_TSD_keys_TlsIndex): Initialise.
* tsd.c (pthread_setspecific): Totally revamped TSD.
(pthread_getspecific): Ditto.
(pthread_create): Ditto.
(pthread_delete): Ditto.
Sun Oct 11 22:44:55 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* global.c (_pthread_tsd_key_table): Add new global.
* implement.h (_pthread_tsd_key_t and struct _pthread_tsd_key):
Add.
(struct _pthread): Remove destructorstack.
* cleanup.c (_pthread_destructor_run_all): Rename from
_pthread_destructor_pop_all. The key destructor stack was made
global rather than per-thread. No longer removes destructor nodes
from the stack. Comments updated.
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POSIX TSD on top of Win32 TLS.
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* {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.
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* implement.h (_pthread_destructor_pop): Add prototype.
* tsd.c (implement.h): Add include.
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* cleanup.c (_pthread_destructor_pop): Implement. Removes
destructors associated with a key without executing them.
(_pthread_destructor_pop_all): Add FIXME comment.
* tsd.c (pthread_key_delete): Add call to _pthread_destructor_pop().
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* tsd.c (pthread_key_create): Update to properly associate
the destructor routine with the key.
* exit.c (_pthread_vacuum): Add call to
_pthread_destructor_pop_all().
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* tsd.c (pthread_getspecific): Update comments.
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* tsd.c (pthread_key_create): Implement.
(pthread_setspecific): Likewise.
(pthread_getspecific): Likewise.
(pthread_key_delete): Likewise.
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