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2003-09-01Reuse the thread struct on failure.rpj
2003-08-14Reuse of thread IDs, improved thread ID validation, new tests, bug fixes.rpj
2003-08-13Bug fixes plus adaptation to current MinGW/MsysDTK environment. Changes to ↵rpj
tests/benchmarks.
2003-08-12Invalid thread param now returns ESRCH instead of EINVAL.rpj
2003-06-24pthread_spin_destroy was not freeing the spinlock struct.rpj
2003-06-21pthread_mutex_destroy.c (pthread_mutex_destroy): When calledrpj
with a recursive mutex that was locked by the current thread, the function was failing with a success return code.
2003-05-15Fixed memory leaks caused by destructors calling pthreads routines at thread ↵rpj
exit.
2003-05-14Fix compiler flag in Visual Studio project file.rpj
2003-03-04Indenting.rpj
2002-12-18Adjust attribution.rpj
2002-12-17 * pthread_mutex_lock.c (ptw32_semwait): New static routine to providerpj
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().
2002-12-112002-12-11 Thomas Pfaff <tpfaff@gmx.net>rpj
* 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.
2002-09-202002-09-20 Michael Johnson <michaelj@maine.rr.com>rpj
* 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.
2002-07-30*** empty log message ***rpj
2002-07-30* pthread_cond_wait.c (ptw32_cond_wait_cleanup):rpj
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* sem_timedwait.c (sem_timedwait): Tighten checks forrpj
unreasonable abstime values - that would result in unexpected timeout values. * w32_CancelableWait.c (ptw32_cancelable_wait): Tighten up return value checking and add comments.
2002-06-04Another attempt to get sem_getvalue working.rpj
2002-06-03An attempt to get sem_getvalue working properly.rpj
2002-03-02 * errno.c: Compiler directive was incorrectly including code.rpj
* 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.
2002-02-27 * exception3.c (terminateFunction): For MSVC++, callrpj
exit() rather than pthread_exit(). Add comments to explain why. * rwlock2_t.c: New test. * rwlock3_t.c: New test. * rwlock4_t.c: New test. * rwlock5_t.c: New test. * rwlock6_t.c: New test. * rwlock6_t2.c: New test. * rwlock6.c (main): Swap thread and result variables to correspond to actual thread functions. * rwlock1.c: Change test description comment to correspond to the actual test.
2002-02-23New functions from POSIX 1003.1 2001. Untested.rpj
2002-02-23 * pthread_cond_destroy.c: Expand the time changerpj
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.
2002-02-20Enter the time change critical section earlierrpj
2002-02-18Major reorganisation of source code; new routine and tests added.rpj
2002-02-11Splitting files. See ChangeLog file for details.rpj
2002-02-08Copyright notice updates; module splitting; POSIX versionrpj
conditional compilation; refinements; bug fixes. See the ChangeLog.
2002-02-07 * nonportable.c (pthread_delay_np): Make a truerpj
cancelation point. Deferred cancels will interrupt the wait.
2002-02-02 * cancel.c: Rearranged some code and introduced checksrpj
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. tests/ * mutex8: New test. * mutex8n: New test. * mutex8e: New test. * mutex8r: New test. * cancel6a: New test. * cancel6d: New test. * cleanup0.c: Add pragmas for inline optimisation control. * cleanup1.c: Add pragmas for inline optimisation control. * cleanup2.c: Add pragmas for inline optimisation control. * cleanup3.c: Add pragmas for inline optimisation control. * condvar7.c: Add pragmas for inline optimisation control. * condvar8.c: Add pragmas for inline optimisation control. * condvar9.c: Add pragmas for inline optimisation control.
2002-02-01 * semaphore.c (sem_trywait): Fix missing errno returnrpj
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().
2002-01-312002-01-27 Ross Johnson <rpj@special.ise.canberra.edu.au>rpj
* mutex.c (pthread_mutex_timedlock): New function suggested by Alexander Terekhov. The logic required to implement this properly came from Alexander, with some collaboration with Thomas Pfaff. (pthread_mutex_unlock): Wrap the waiters check and sema post in a critical section to prevent a race with pthread_mutex_timedlock. (ptw32_timed_semwait): New function; returns a special result if the absolute timeout parameter represents a time already passed when called; used by pthread_mutex_timedwait(). Have deliberately not reused the name "ptw32_sem_timedwait" because they are not the same routine. * condvar.c (ptw32_cond_timedwait): Use the new sem_timedwait() instead of ptw32_sem_timedwait(), which now has a different function. See previous. * implement.h: Remove prototype for ptw32_sem_timedwait. See next. (pthread_mutex_t_): Add critical section element for access to lock_idx during mutex post-timeout processing. * semaphore.h (sem_timedwait): See next. * semaphore.c (sem_timedwait): See next. * private.c (ptw32_sem_timedwait): Move to semaphore.c and rename as sem_timedwait(). 2002-01-18 Ross Johnson <rpj@special.ise.canberra.edu.au> * sync.c (pthread_join): Was getting the exit code from the calling thread rather than the joined thread if defined(__MINGW32__) && !defined(__MSVCRT__). 2002-01-15 Ross Johnson <rpj@special.ise.canberra.edu.au> * pthread.h: Unless the build explicitly defines __CLEANUP_SEH, __CLEANUP_CXX, or __CLEANUP_C, then the build defaults to __CLEANUP_C style cleanup. This style uses setjmp/longjmp in the cancelation and thread exit implementations and therefore won't do stack unwinding if linked to applications that have it (e.g. C++ apps). This is currently consistent with most/all commercial Unix POSIX threads implementations. * spin.c (pthread_spin_init): Edit renamed function call. * nonportable.c (pthread_num_processors_np): New. (pthread_getprocessors_np): Renamed to ptw32_getprocessors and moved to private.c. * private.c (pthread_getprocessors): Moved here from nonportable.c. * pthread.def (pthread_getprocessors_np): Removed from export list. * rwlock.c (pthread_rwlockattr_init): New. (pthread_rwlockattr_destroy): New. (pthread_rwlockattr_getpshared): New. (pthread_rwlockattr_setpshared): New.
2002-01-13 * attr.c (pthread_attr_setscope): Fix struct pointerrpj
indirection error introduced 2002-01-04. (pthread_attr_getscope): Likewise. * pthread.dsp (SOURCE): Add missing source files. ./tests/: * exception3.c (main): Shorten wait time. * mutex7.c: New test. * mutex7n.c: New test. * mutex7e.c: New test. * mutex7r.c: New test. * mutex6.c: Modified to avoid leaving the locked mutex around on exit.
2002-01-08 * mutex.c (pthread_mutex_trylock): userpj
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 * mutex.c (pthread_mutex_init): Remove criticalrpj
section calls. (pthread_mutex_destroy): Likewise. (pthread_mutex_unlock): Likewise. (pthread_mutex_trylock): Likewise; 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 * attr.c (pthread_attr_setscope): Add more errorrpj
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.
2001-12-20 * mutex.c (pthread_mutex_lock): Decrementing lock_idx wasrpj
not thread-safe. (pthread_mutex_trylock): Likewise.
2001-10-26semaphore.c (sem_init): somehow when sem_t reverted to an opaque structrpj
the calloc NULL check was left in the conditionally included section. (sem_destroy): Likewise, the calloced sem_t wasn't being freed.
2001-10-26 * semaphore.c (sem_init): Fix typo and missing bracketrpj
in conditionally compiled code. Only older versions of WinCE require this code, hence it doesn't normally get tested.
2001-10-25 * GNUmakefile (libwsock32): Add to linker flags forrpj
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.
2001-10-25 * barrier.c: Move _LONG and _LPLONG defines intorpj
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.
2001-10-24 * attr.c (pthread_attr_setstacksize): Quell warningrpj
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).
2001-10-15 * spin.c (pthread_spin_lock): PTHREAD_SPINLOCK_INITIALIZERrpj
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 * spin.c (pthread_spin_unlock): Was not returningrpj
EPERM if the spinlock was not locked, for multi CPU machines.
2001-10-08pthread_spin_trylock was not returning EBUSY on multi CPU machines.rpj
2001-08-24 * condvar.c (pthread_cond_destroy): Remove cv elementrpj
that is no longer used. * implement.h: Likewise.
2001-08-23 Contributed by - "Alexander Terekhov" <TEREKHOV@de.ibm.com>rpj
* 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 * tsd.c (pthread_getspecific): Preserve the lastrpj
winsock error [from WSAGetLastError()].
2001-07-18 * rwlock.c (pthread_rwlock_wrlock): Is allowed to berpj
a cancelation point; re-enable deferred cancelability around the CV call.
2001-07-18Fix potential NULL pointer dereferences.rpj
Contributed by - "Scott McCaskill" <scott@magruder.org> * mutex.c (pthread_mutexattr_init): Return ENOMEM immediately and don't dereference the NULL pointer if calloc fails. (pthread_mutexattr_getpshared): Don't dereference a pointer that is possibly NULL. * barrier.c (pthread_barrierattr_init): Likewise (pthread_barrierattr_getpshared): Don't dereference a pointer that is possibly NULL. * condvar.c (pthread_condattr_getpshared): Don't dereference a pointer that is possibly NULL.
2001-07-18 * mutex.c (pthread_mutexattr_init): Return ENOMEMrpj
immediately and don't dereference the NULL pointer if calloc fails. - "Scott McCaskill" <scott@magruder.org>
2001-07-10Untested revamp of barrier.c.rpj
* 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.