diff options
| author | dartraiden <wowemuh@gmail.com> | 2018-06-01 18:25:57 +0300 |
|---|---|---|
| committer | dartraiden <wowemuh@gmail.com> | 2018-06-01 18:26:31 +0300 |
| commit | 0a55fa14f462169bbd8a8de623804f039854f95f (patch) | |
| tree | 19fb2ef7ee1d7b6f3c80b3d83bc010733bc0f58f /libs/pthreads/docs/ChangeLog | |
| parent | 25f2c798a74bf6f72f2d6ba40e37a89c662204ba (diff) | |
we only needs license, contributors and version info
Diffstat (limited to 'libs/pthreads/docs/ChangeLog')
| -rw-r--r-- | libs/pthreads/docs/ChangeLog | 5211 |
1 files changed, 0 insertions, 5211 deletions
diff --git a/libs/pthreads/docs/ChangeLog b/libs/pthreads/docs/ChangeLog deleted file mode 100644 index 42abcc457a..0000000000 --- a/libs/pthreads/docs/ChangeLog +++ /dev/null @@ -1,5211 +0,0 @@ -2012-03-18 Ross Johnson <ross dot johnson at homemail dot com dot au> - - * create.c (pthread_create): add __cdecl attribute to thread routine - arg - * implement.h (pthread_key_t): add __cdecl attribute to destructor - element - (ThreadParms): likewise for start element - * pthread.h (pthread_create): add __cdecl to prototype start arg - (pthread_once): likewise for init_routine arg - (pthread_key_create): likewise for destructor arg - (ptw32_cleanup_push): replace type of routine arg with previously - defined ptw32_cleanup_callback_t - * pthread_key_create.c: add __cdecl attribute to destructor arg - * pthread_once.c: add __cdecl attribute to init_routine arg - * ptw32_threadStart.c (start): add __cdecl to start variable type - - -2011-07-06 Ross Johnson <ross dot johnson at homemail dot com dot au> - - * pthread_cond_wait.c (pragma inline_depth): this is almost redundant - now nevertheless fixed thei controlling MSC_VER from "< 800" to - "< 1400" (i.e. any prior to VC++ 8.0). - * pthread_once.ci (pragma inline_depth): Likewise. - * pthread_rwlock_timedwrlock.ci (pragma inline_depth): Likewise. - * pthread_rwlock_wrlock.ci (pragma inline_depth): Likewise. - * sem_timedwait.ci (pragma inline_depth): Likewise. - * sem_wait.ci (pragma inline_depth): Likewise. - -2011-07-05 Ross Johnson <ross dot johnson at homemail dot com dot au> - - * pthread_win32_attach_detach_np.c: Use strncat_s if available - to removei a compile warning; MingW supports this routine but we - continue to use strncat anyway there because it is secure if - given the correct parameters; fix strncat param 3 to avoid - buffer overrun exploitation potential. - -2011-07-03 Ross Johnson <ross dot johnson at homemail dot com dot au> - - * pthread_spin_unlock.c (EPERM): Return success if unlocking a lock - that is not locked, because single CPU machines wrap a - PTHREAD_MUTEX_NORMAL mutex, which returns success in this case. - * pthread_win32_attach_detach_np.c (QUSEREX.DLL): Load from an - absolute path only which must be the Windows System folder. - -2011-07-03 Daniel Richard G. <skunk at iskunk dot org> - - * Makefile (_WIN32_WINNT): Removed; duplicate definition in - implement.h; more cleanup and enhancements. - -2011-07-02 Daniel Richard G. <skunk at iskunk dot org> - - * Makefile: Cleanups and implovements. - * ptw32_MCS_locks.c: Casting fixes. - * implement.h: Interlocked call and argument casting macro fixes - to support older and newer build environments. - -2011-07-01 Ross Johnson <ross dot johnson at homemail dot com dot au> - - * *.[ch] (PTW32_INTERLOCKED_*): Redo 23 and 64 bit versions of these - macros and re-apply in code to undo the incorrect changes from - 2011-06-29; remove some size_t casts which should not be required - and may be problematic.a - There are now two sets of macros: - PTW32_INTERLOCKED_*_LONG which work only on 32 bit integer variables; - PTW32_INTERLOCKED_*_SIZE which work on size_t integer variables, i.e. - LONG for 32 bit systems and LONGLONG for 64 bit systems. - * implement.h (MCS locks): nextFlag and waitFlag are now HANDLE type. - * ptw32_MCS_locks.c: Likewise. - * pthread.h (#include <setjmp.h>): Removed. - * ptw32_throw.c (#include <setjmp.h>): Added. - * ptw32_threadStart.c (#include <setjmp.h>): Added. - * implement.h (#include <setjmp.h>): Added. - -2011-06-30 Ross Johnson <ross dot johnson at homemail dot com dot au> - - * pthread_once.c: Tighten 'if' statement casting; fix interlocked - pointer cast for 64 bit compatibility (missed yesterday); remove - the superfluous static cleanup routine and call the release routine - directly if popped. - * create.c (stackSize): Now type size_t. - * pthread.h (struct ptw32_thread_t_): Rearrange to fix element alignments. - -2011-06-29 Daniel Richard G. <skunk at iskunk dot org> - - * ptw32_relmillisecs.c (ftime): - _ftime64_s() is only available in MSVC 2005 or later; - _ftime64() is available in MinGW or MSVC 2002 or later; - _ftime() is always available. - * pthread.h (long long): Not defined in older MSVC 6. - * implement.h (long long): Likewise. - * pthread_getunique_np.c (long long): Likewise. - -2011-06-29 Ross Johnson <ross dot johnson at homemail dot com dot au> - - * *.[ch] (PTW32_INTERLOCKED_*): These macros should now work for - both 32 and 64 bit builds. The MingW versions are all inlined asm - while the MSVC versions expand to their Interlocked* or Interlocked*64 - counterparts appropriately. The argument type have also been changed - to cast to the appropriate value or pointer size for the architecture. - -2011-05-29 Ross Johnson <ross dot johnson at homemail dot com dot au> - - * *.[ch] (#ifdef): Extended cleanup to whole project. - -2011-05-29 Daniel Richard G. <skunk at iskunk dot org> - - * Makefile (CC): Define CC to allow use of other compatible - compilers such as the Intel compilter icl. - * implement.h (#if): Fix forms like #if HAVE_SOMETHING. - * pthread.h: Likewise. - * sched.h: Likewise; PTW32_LEVEL_* becomes PTW32_SCHED_LEVEL_*. - * semaphore.h: Likewise. - -2011-05-11 Ross Johnson <ross.johnson at homemail.com.au> - - * ptw32_callUserDestroyRoutines.c (terminate): Altered includes - to match ptw32_threadStart.c. - * GNUmakefile (GCE-inlined-debug, DOPT): Fixed. - -2011-04-31 Ross Johnson <ross.johnson at homemail.com.au> - - * (robust mutexes): Added this API. The API is not - mandatory for implementations that don't support PROCESS_SHARED - mutexes, nevertheless it was considered useful both functionally - and for source-level compatibility. - -2011-03-26 Ross Johnson <ross.johnson at homemail.com.au> - - * pthread_getunique_np.c: New non-POSIX interface for compatibility - with some other implementations; returns a 64 bit sequence number - that is unique to each thread in the process. - * pthread.h (pthread_getunique_np): Added. - * global.c: Add global sequence counter for above. - * implement.h: Likewise. - -2011-03-25 Ross Johnson <ross.johnson at homemail.com.au> - - * (cancelLock): Convert to an MCS lock and rename to stateLock. - * (threadLock): Likewise. - * (keyLock): Likewise. - * pthread_mutex*.c: First working robust mutexes. - -2011-03-11 Ross Johnson <ross.johnson at homemail.com.au> - - * implement.h (PTW32_INTERLOCKED_*CREMENT macros): increment/decrement - using ++/-- instead of add/subtract 1. - * ptw32_MCS_lock.c: Make casts consistent. - -2011-03-09 Ross Johnson <ross.johnson at homemail.com.au> - - * implement.h (ptw32_thread_t_): Add process unique sequence number. - * global.c: Replace global Critical Section objects with MCS - queue locks. - * implement.h: Likewise. - * pthread_cond_destroy.c: Likewise. - * pthread_cond_init.c: Likewise. - * pthread_detach.c: Likewise. - * pthread_join.c: Likewise. - * pthread_kill.c: Likewise. - * pthread_mutex_destroy.c: Likewise. - * pthread_rwlock_destroy.c: Likewise. - * pthread_spin_destroy.c: Likewise. - * pthread_timechange_handler_np.c: Likewise. - * ptw32_cond_check_need_init.c: Likewise. - * ptw32_mutex_check_need_init.c: Likewise. - * ptw32_processInitialize.c: Likewise. - * ptw32_processTerminate.c: Likewise. - * ptw32_reuse.c: Likewise. - * ptw32_rwlock_check_need_init.c: Likewise. - * ptw32_spinlock_check_need_init.c: Likewise. - -2011-03-06 Ross Johnson <ross.johnson at homemail.com.au> - - * several (MINGW64): Cast and call fixups for 64 bit compatibility; - clean build via x86_64-w64-mingw32 cross toolchain on Linux i686 - targeting x86_64 win64. - * ptw32_threadStart.c (ptw32_threadStart): Routine no longer attempts - to pass [unexpected C++] exceptions out of scope but ends the thread - normally setting EINTR as the exit status. - * ptw32_throw.c: Fix C++ exception throwing warnings; ignore - informational warning. - * implement.h: Likewise with the corresponding header definition. - -2011-03-04 Ross Johnson <ross.johnson at homemail.com.au> - - * implement.h (PTW32_INTERLOCKED_*): Mingw32 does not provide - the __sync_* intrinsics so implemented them here as macro - assembler routines. MSVS Interlocked* are emmitted as intrinsics - wherever possible, so we want mingw to match it; Extended to - include all interlocked routines used by the library; implemented - x86_64 versions also. - * ptw32_InterlockedCompareExchange.c: No code remaining here. - * ptw32_MCS_lock.c: Converted interlocked calls to use new macros. - * pthread_barrier_wait.c: Likewise. - * pthread_once.c: Likewise. - * ptw32_MCS_lock.c (ptw32_mcs_node_substitute): Name changed to - ptw32_mcs_node_transfer. - -2011-02-28 Ross Johnson <ross.johnson at homemail.com.au> - - * ptw32_relmillisecs.c: If possible, use _ftime64_s or _ftime64 - before resorting to _ftime. - -2011-02-27 Ross Johnson <ross.johnson at homemail.com.au> - - * sched_setscheduler.c: Ensure the handle is closed after use. - * sched_getscheduler.c: Likewise. - * pthread.h: Remove POSIX compatibility macros; don't define - timespec if already defined. - * context.h: Changes for 64 bit. - * pthread_cancel.c: Likewise. - * pthread_exit.c: Likewise. - * pthread_spin_destroy.c: Likewise. - * pthread_timechange_handler_np.c: Likewise. - * ptw32_MCS_lock.c: Likewise; some of these changes may - not be compatible with pre Windows 2000 systems; reverse the order of - the includes. - * ptw32_threadStart.c: Likewise. - * ptw32_throw.c: Likewise. - -2011-02-13 Ross Johnson <ross.johnson at homemail.com.au> - - * pthread_self: Add comment re returning 'nil' value to - indicate failure only to win32 threads that call us. - * pthread_attr_setstackaddr: Fix comments; note this - function and it's compliment are now removed from SUSv4. - -2011-02-12 Ross Johnson <ross.johnson at homemail.com.au> - - README.NONPORTABLE: Record a description of an obvious - method for nulling/comparing/hashing pthread_t using a - union; plus and investigation of a change of type for - pthread_t (to a union) to neutralise any padding bits and - bytes if they occur in pthread_t (the current pthread_t struct - does not contain padding AFAIK, but porting the library to a - future architecture may introduce them). Padding affects - byte-by-byte copies and compare operations. - -2010-11-16 Ross Johnson <ross.johnson at homemail.com.au> - - * ChangeLog: Add this entry ;-) - Restore entries from 2007 through 2009 that went missing - at the last update. - -2010-06-19 Ross Johnson <ross.johnson at homemail.com.au> - - * ptw32_MCS_lock.c (ptw32_mcs_node_substitute): Fix variable - names to avoid using C++ keyword ("new"). - * implement.h (ptw32_mcs_node_substitute): Likewise. - * pthread_barrier_wait.c: Fix signed/unsigned comparison warning. - -2010-06-18 Ramiro Polla <ramiro.polla at gmail.com > - - * autostatic.c: New file; call pthread_win32_process_*() - libary init/cleanup routines automatically on application start - when statically linked. - * pthread.c (autostatic.c): Included. - * pthread.h (declspec): Remove import/export defines if compiler - is MINGW. - * sched.h (declspec): Likewise. - * semaphore.h (declspec): Likewise. - * need_errno.h (declspec): Likewise. - * Makefile (autostatic.obj): Add for small static builds. - * GNUmakefile (autostatic.o): Likewise. - * NEWS (Version 2.9.0): Add changes. - * README.NONPORTABLE (pthread_win32_process_*): Update - description. - -2010-06-15 Ramiro Polla <ramiro.polla at gmail.com > - - * Makefile: Remove linkage with the winsock library by default. - * GNUmakefile: Likewise. - * pthread_getspecific.c: Likewise by removing calls to WSA - functions. - * config.h (RETAIN_WSALASTERROR): Can be defined if necessary. - -2010-01-26 Ross Johnson <ross.johnson at homemail.com.au> - - * ptw32_MCS_lock.c (ptw32_mcs_node_substitute): New routine - to allow relocating the lock owners thread-local node to somewhere - else, e.g. to global space so that another thread can release the - lock. Used in pthread_barrier_wait. - (ptw32_mcs_lock_try_acquire): New routine. - * pthread_barrier_init: Only one semaphore is used now. - * pthread_barrier_wait: Added an MCS guard lock with the last thread - to leave the barrier releasing the lock. This removes a deadlock bug - observed when there are greater than barrier-count threads - attempting to cross. - * pthread_barrier_destroy: Added an MCS guard lock. - -2009-03-03 Stephan O'Farrill <stephan dot ofarrill at gmail dot com> - - * pthread_attr_getschedpolicy.c: Add "const" to function parameter - in accordance with SUSv3 (POSIX). - * pthread_attr_getinheritsched.c: Likewise. - * pthread_mutexattr_gettype.c: Likewise. - -2008-06-06 Robert Kindred <RKindred at SwRI dot edu> - - * ptw32_throw.c (ptw32_throw): Remove possible reference to NULL - pointer. (At the same time made the switch block conditionally - included only if exitCode is needed - RPJ.) - * pthread_testcancel.c (pthread_testcancel): Remove duplicate and - misplaced pthread_mutex_unlock(). - -2008-02-21 Sebastian Gottschalk <seppig_relay at gmx dot de> - - * pthread_attr_getdetachstate.c (pthread_attr_getdetachstate): - Remove potential and superfluous null pointer assignment. - -2007-11-22 Ivan Pizhenko <ivanp4 at ua dot fm> - - * pthread.h (gmtime_r): gmtime returns 0 if tm represents a time - prior to 1/1/1970. Notice this to prevent raising an exception. - * pthread.h (localtime_r): Likewise for localtime. - -2007-07-14 Marcel Ruff <mr at marcelruff dot info> - - * errno.c (_errno): Fix test for pthread_self() success. - * need_errno.h: Remove unintentional line wrap from #if line. - -2007-07-14 Mike Romanchuk <mromanchuk at empirix dot com> - - * pthread.h (timespec): Fix tv_sec type. - -2007-01-07 Sinan Kaya <sinan.kaya at siemens dot com> - - * need_errno.h: Fix declaration of _errno - the local version of - _errno() is used, e.g. by WinCE. - -2007-01-06 Ross Johnson <ross.johnson at homemail dot com dot au> - - * ptw32_semwait.c: Add check for invalid sem_t after acquiring the - sem_t state guard mutex and before affecting changes to sema state. - -2007-01-06 Marcel Ruff <mr at marcelruff dot info> - - * error.c: Fix reference to pthread handle exitStatus member for - builds that use NEED_ERRNO (i.e. WINCE). - * context.h: Add support for ARM processor (WinCE). - * mutex.c (process.h): Exclude for WINCE. - * create.c: Likewise. - * exit.c: Likewise. - * implement.h: Likewise. - * pthread_detach.c (signal.h): Exclude for WINCE. - * pthread_join.c: Likewise. - * pthread_kill.c: Likewise. - * pthread_rwlock_init.c (errno.h): Remove - included by pthread.h. - * pthread_rwlock_destroy.c: Likewise. - * pthread_rwlock_rdlock.c: Likewise. - * pthread_rwlock_timedrdlock.c: Likewise. - * pthread_rwlock_timedwrlock.c: Likewise. - * pthread_rwlock_tryrdlock.c: Likewise. - * pthread_rwlock_trywrlock.c: likewise. - * pthread_rwlock_unlock.c: Likewise. - * pthread_rwlock_wrlock.c: Likewise. - * pthread_rwlockattr_destroy.c: Likewise. - * pthread_rwlockattr_getpshared.c: Likewise. - * pthread_rwlockattr_init.c: Likewise. - * pthread_rwlockattr_setpshared.c: Likewise. - -2007-01-06 Romano Paolo Tenca <rotenca at telvia dot it> - - * pthread_cond_destroy.c: Replace sem_wait() with non-cancelable - ptw32_semwait() since pthread_cond_destroy() is not a cancelation - point. - * implement.h (ptw32_spinlock_check_need_init): Add prototype. - * ptw32_MCS_lock.c: Reverse order of includes. - -2007-01-06 Eric Berge <eric dot berge at quantum dot com> - - * pthread_cond_destroy.c: Add LeaveCriticalSection before returning - after errors. - -2007-01-04 Ross Johnson <ross.johnson at homemail dot com dot au> - - * ptw32_InterlockedCompareExchange.c: Conditionally skip for - Win64 as not required. - * pthread_win32_attach_detach_np.c (pthread_win32_process_attach_np): - Test for InterlockedCompareExchange is not required for Win64. - * context.h: New file. Included by pthread_cancel.h and any tests - that need it (e.g. context1.c). - * pthread_cancel.c: Architecture-dependent context macros moved - to context.h. - -2007-01-04 Kip Streithorst <KSTREITH at ball dot com> - - * implement.h (PTW32_INTERLOCKED_COMPARE_EXCHANGE): Add Win64 - support. - -2006-12-20 Ross Johnson <ross.johnson at homemail.com.au> - - * sem_destroy.c: Fix the race involving invalidation of the sema; - fix incorrect return of EBUSY resulting from the mutex trylock - on the private mutex guard. - * sem_wait.c: Add check for invalid sem_t after acquiring the - sem_t state guard mutex and before affecting changes to sema state. - * sem_trywait.c: Likewise. - * sem_timedwait.c: Likewise. - * sem_getvalue.c: Likewise. - * sem_post.c: Similar. - * sem_post_multiple.c: Likewise. - * sem_init.c: Set max Win32 semaphore count to SEM_VALUE_MAX (was - _POSIX_SEM_VALUE_MAX, which is a lower value - the minimum). - - * pthread_win32_attach_detach_np.c (pthread_win32_process_attach_np): - Load COREDLL.DLL under WINCE to check existence of - InterlockedCompareExchange() routine. This used to be done to test - for TryEnterCriticalSection() but was removed when this was no - longer needed. - -2006-01-25 Prashant Thakre <prashant.thakre at gmail.com> - - * pthread_cancel.c: Added _M_IA64 register context support. - -2005-05-13 Ross Johnson <ross at callisto.canberra.edu.au> - - * pthread_kill.c (pthread_kill): Remove check for Win32 thread - priority (to confirm HANDLE validity). Useless since thread HANDLEs - a not recycle-unique. - -2005-05-30 Vladimir Kliatchko <vladimir at kliatchko.com> - - * pthread_once.c: Re-implement using an MCS queue-based lock. The form - of pthread_once is as proposed by Alexander Terekhov (see entry of - 2005-03-13). The MCS lock implementation does not require a unique - 'name' to identify the lock between threads. Attempts to get the Event - or Semaphore based versions of pthread_once to a satisfactory level - of robustness have thus far failed. The last problem (avoiding races - involving non recycle-unique Win32 HANDLEs) was giving everyone - grey hair trying to solve it. - - * ptw32_MCS_lock.c: New MCS queue-based lock implementation. These - locks are efficient: they have very low overhead in the uncontended case; - are efficient in contention and minimise cache-coherence updates in - managing the user level FIFO queue; do not require an ABI change in the - library. - -2005-05-27 Alexander Gottwald <alexander.gottwald at s1999.tu-chemnitz.de> - - * pthread.h: Some things, like HANDLE, were only defined if - PTW32_LEVEL was >= 3. They should always be defined. - -2005-05-25 Vladimir Kliatchko <vladimir at kliatchko.com> - - * pthread_once.c: Eliminate all priority operations and other - complexity by replacing the event with a semaphore. The advantage - of the change is the ability to release just one waiter if the - init_routine thread is cancelled yet still release all waiters when - done. Simplify once_control state checks to improve efficiency - further. - -2005-05-24 Mikael Magnusson <mikaelmagnusson at glocalnet.net> - - * GNUmakefile: Patched to allow cross-compile with mingw32 on Linux. - It uses macros instead of referencing dlltool, gcc and g++ directly; - added a call to ranlib. For example the GC static library can be - built with: - make CC=i586-mingw32msvc-gcc RC=i586-mingw32msvc-windres \ - RANLIB=i586-mingw32msvc-ranlib clean GC-static - -2005-05-13 Ross Johnson <ross at callisto.canberra.edu.au> - - * pthread_win32_attach_detach_np.c (pthread_win32_thread_detach_np): - Move on-exit-only stuff from ptw32_threadDestroy() to here. - * ptw32_threadDestroy.c: It's purpose is now only to reclaim thread - resources for detached threads, or via pthread_join() or - pthread_detach() on joinable threads. - * ptw32_threadStart.c: Calling user destruct routines has moved to - pthread_win32_thread_detach_np(); call pthread_win32_thread_detach_np() - directly if statically linking, otherwise do so via dllMain; store - thread return value in thread struct for all cases, including - cancellation and exception exits; thread abnormal exits go via - pthread_win32_thread_detach_np. - * pthread_join.c (pthread_join): Don't try to get return code from - Win32 thread - always get it from he thread struct. - * pthread_detach.c (pthread_detach): reduce extent of the thread - existence check since we now don't care if the Win32 thread HANDLE has - been closed; reclaim thread resources if the thread has exited already. - * ptw32_throw.c (ptw32_throw): For Win32 threads that are not implicit, - only Call thread cleanup if statically linking, otherwise leave it to - dllMain. - * sem_post.c (_POSIX_SEM_VALUE_MAX): Change to SEM_VALUE_MAX. - * sem_post_multiple.c: Likewise. - * sem_init.c: Likewise. - -2005-05-10 Ross Johnson <ross at callisto.canberra.edu.au> - - * pthread_join.c (pthread_join): Add missing check for thread ID - reference count in thread existence test; reduce extent of the - existence test since we don't care if the Win32 thread HANDLE has - been closed. - -2005-05-09 Ross Johnson <ross at callisto.canberra.edu.au> - - * ptw32_callUserDestroyRoutines.c: Run destructor process (i.e. - loop over all keys calling destructors) up to - PTHREAD_DESTRUCTOR_ITERATIONS times if TSD value isn't NULL yet; - modify assoc management. - * pthread_key_delete.c: Modify assoc management. - * ptw32_tkAssocDestroy.c: Fix error in assoc removal from chains. - * pthread.h - (_POSIX_THREAD_DESTRUCTOR_ITERATIONS): Define to value specified by - POSIX. - (_POSIX_THREAD_KEYS_MAX): Define to value specified by POSIX. - (PTHREAD_KEYS_MAX): Redefine [upward] to minimum required by POSIX. - (SEM_NSEMS_MAX): Define to implementation value. - (SEM_VALUE_MAX): Define to implementation value. - (_POSIX_SEM_NSEMS_MAX): Redefine to value specified by POSIX. - (_POSIX_SEM_VALUE_MAX): Redefine to value specified by POSIX. - -2005-05-06 Ross Johnson <ross at callisto.canberra.edu.au> - - * signal.c (sigwait): Add a cancellation point to this otherwise - no-op. - * sem_init.c (sem_init): Check for and return ERANGE error. - * sem_post.c (sem_post): Likewise. - * sem_post_multiple.c (sem_post_multiple): Likewise. - * manual (directory): Added; see ChangeLog inside. - -2005-05-02 Ross Johnson <ross at callisto.canberra.edu.au> - - * implement.h (struct pthread_key_t_): Change threadsLock to keyLock - so as not to be confused with the per thread lock 'threadlock'; - change all references to it. - * implement.h (struct ThreadKeyAssoc): Remove lock; add prevKey - and prevThread pointers; re-implemented all routines that use this - struct. The effect of this is to save one handle per association, - which could potentially equal the number of keys multiplied by the - number of threads, accumulating over time - and to free the - association memory as soon as it is no longer referenced by either - the key or the thread. Previously, the handle and memory were - released only after BOTH key and thread no longer referenced the - association. That is, often no association resources were released - until the process itself exited. In addition, at least one race - condition has been removed - where two threads could attempt to - release the association resources simultaneously - one via - ptw32_callUserDestroyRoutines and the other via - pthread_key_delete. - - thanks to Richard Hughes at Aculab for discovering the problem. - * pthread_key_create.c: See above. - * pthread_key_delete.c: See above. - * pthread_setspecific.c: See above. - * ptw32_callUserDestroyRoutines.c: See above. - * ptw32_tkAssocCreate.c: See above. - * ptw32_tkAssocDestroy.c: See above. - -2005-04-27 Ross Johnson <ross at callisto.canberra.edu.au> - - * sem_wait.c (ptw32_sem_wait_cleanup): after cancellation re-attempt - to acquire the semaphore to avoid a race with a late sem_post. - * sem_timedwait.c: Modify comments. - -2005-04-25 Ross Johnson <ross at callisto.canberra.edu.au> - - * ptw32_relmillisecs.c: New module; converts future abstime to - milliseconds relative to 'now'. - * pthread_mutex_timedlock.c: Use new ptw32_relmillisecs routine in - place of internal code; remove the NEED_SEM code - this routine is now - implemented for builds that define NEED_SEM (WinCE etc) - * sem_timedwait.c: Likewise; after timeout or cancellation, - re-attempt to acquire the semaphore in case one has been posted since - the timeout/cancel occurred. Thanks to Stefan Mueller. - * Makefile: Add ptw32_relmillisecs.c module; remove - ptw32_{in,de}crease_semaphore.c modules. - * GNUmakefile: Likewise. - * Bmakefile: Likewise. - - * sem_init.c: Re-write the NEED_SEM code to be consistent with the - non-NEED_SEM code, but retaining use of an event in place of the w32 sema - for w32 systems that don't include semaphores (WinCE); - the NEED_SEM versions of semaphores has been broken for a long time but is - now fixed and supports all of the same routines as the non-NEED_SEM case. - * sem_destroy.c: Likewise. - * sem_wait.c: Likewise. - * sem_post.c: Likewise. - * sem_post_multple.c: Likewise. - * implement.h: Likewise. - * sem_timedwait.c: Likewise; this routine is now - implemented for builds that define NEED_SEM (WinCE etc). - * sem_trywait.c: Likewise. - * sem_getvalue.c: Likewise. - - * pthread_once.c: Yet more changes, reverting closer to Gottlob Frege's - first design, but retaining cancellation, priority boosting, and adding - preservation of W32 error codes to make pthread_once transparent to - GetLastError. - -2005-04-11 Ross Johnson <ross at callisto.canberra.edu.au> - - * pthread_once.c (pthread_once): Added priority boosting to - solve starvation problem after once_routine cancellation. - See notes in file. - -2005-04-06 Kevin Lussier <Kevin at codegreennetworks.com> - - * Makefile: Added debug targets for all versions of the library. - -2005-04-01 Ross Johnson <ross at callisto.canberra.edu.au> - - * GNUmakefile: Add target to build libpthreadGC1.a as a static link - library. - * Makefile: Likewise for pthreadGC1.lib. - -2005-04-01 Kevin Lussier <Kevin at codegreennetworks.com> - - * sem_timedwait.c (sem_timedwait): Increase size of temp variables to - avoid int overflows for large timeout values. - * implement.h (int64_t): Include or define. - -2005-03-31 Dimitar Panayotov <develop at mail.bg>^M - - * pthread.h: Fix conditional defines for static linking. - * sched.h: Liekwise. - * semaphore.h: Likewise. - * dll.c (PTW32_STATIC_LIB): Module is conditionally included - in the build. - -2005-03-16 Ross Johnson <ross at callisto.canberra.edu.au>^M - - * pthread_setcancelstate.c: Undo the last change. - -2005-03-16 Ross Johnson <ross at callisto.canberra.edu.au>^M - - * pthread_setcancelstate.c: Don't check for an async cancel event - if the library is using alertable async cancel.. - -2005-03-14 Ross Johnson <ross at callisto.canberra.edu.au> - - * pthread_once.c (pthread_once): Downgrade interlocked operations to simple - memory operations where these are protected by the critical section; edit - comments. - -2005-03-13 Ross Johnson <rpj at callisto.canberra.edu.au> - - * pthread_once.c (pthread_once): Completely redesigned; a change was - required to the ABI (pthread_once_t_), and resulting in a version - compatibility index increment. - - NOTES: - The design (based on pseudo code contributed by Gottlob Frege) avoids - creating a kernel object if there is no contention. See URL for details:- - http://sources.redhat.com/ml/pthreads-win32/2005/msg00029.html - This uses late initialisation similar to the technique already used for - pthreads-win32 mutexes and semaphores (from Alexander Terekhov). - - The subsequent cancelation cleanup additions (by rpj) could not be implemented - without sacrificing some of the efficiency in Gottlob's design. In particular, - although each once_control uses it's own event to block on, a global CS is - required to manage it - since the event must be either re-usable or - re-creatable under cancelation. This is not needed in the non-cancelable - design because it is able to mark the event as closed (forever). - - When uncontested, a CS operation is equivalent to an Interlocked operation - in speed. So, in the final design with cancelability, an uncontested - once_control operation involves a minimum of five interlocked operations - (including the LeaveCS operation). - - ALTERNATIVES: - An alternative design from Alexander Terekhov proposed using a named mutex, - as sketched below:- - - if (!once_control) { // May be in TLS - named_mutex::guard guard(&once_control2); - if (!once_control2) { - <init> - once_control2 = true; - } - once_control = true; - } - - A more detailed description of this can be found here:- - http://groups.yahoo.com/group/boost/message/15442 - - [Although the definition of a suitable PTHREAD_ONCE_INIT precludes use of the - TLS located flag, this is not critical.] - - There are three primary concerns though:- - 1) The [named] mutex is 'created' even in the uncontended case. - 2) A system wide unique name must be generated. - 3) Win32 mutexes are VERY slow even in the uncontended case. An uncontested - Win32 mutex lock operation can be 50 (or more) times slower than an - uncontested EnterCS operation. - - Ultimately, the named mutex trick is making use of the global locks maintained - by the kernel. - - * pthread.h (pthread_once_t_): One flag and an event HANDLE added. - (PTHREAD_ONCE_INIT): Additional values included. - -2005-03-08 Ross Johnson <rpj at callisto.canberra.edu.au> - - * pthread_once.c (pthread_once): Redesigned to elliminate potential - starvation problem. - - reported by Gottlob Frege <gottlobfrege at gmail.com> - - * ptw32_threadDestroy.c (ptw32_threadDestroy): Implicit threads were - not closing their Win32 thread duplicate handle. - - reported by Dmitrii Semii <bogolt at gmail.com> - -2005-01-25 Ralf Kubis <RKubis at mc.com> - - * Attempted acquisition of recursive mutex was causing waiting - threads to not be woken when the mutex is released. - - * GNUmakefile (GCE): Generate correct version resource comments. - -2005-01-01 Konstantin Voronkov <beowinkle at yahoo.com> - - * pthread_mutex_lock.c (pthread_mutex_lock): The new atomic exchange - mutex algorithm is known to allow a thread to steal the lock off - FIFO waiting threads. The next waiting FIFO thread gets a spurious - wake-up and must attempt to re-acquire the lock. The woken thread - was setting itself as the mutex's owner before the re-acquisition. - -2004-11-22 Ross Johnson <rpj at callisto.canberra.edu.au> - - * pthread_cond_wait.c (ptw32_cond_wait_cleanup): Undo change - from 2004-11-02. - * Makefile (DLL_VER): Added for DLL naming suffix - see README. - * GNUmakefile (DLL_VER): Likewise. - * Wmakefile (DLL_VER): Likewise. - * Bmakefile (DLL_VER): Likewise. - * pthread.dsw (version.rc): Added to MSVS workspace. - -2004-11-20 Boudewijn Dekker <b.dekker at ellipsis.nl> - - * pthread_getspecific.c (pthread_getspecific): Check for - invalid (NULL) key argument. - -2004-11-19 Ross Johnson <rpj at callisto.canberra.edu.au> - - * config.h (PTW32_THREAD_ID_REUSE_INCREMENT): Added to allow - building the library for either unique thread IDs like Solaris - or non-unique thread IDs like Linux; allows application developers - to override the library's default insensitivity to some apps - that may not be strictly POSIX compliant. - * version.rc: New resource module to encode version information - within the DLL. - * pthread.h: Added PTW32_VERSION* defines and grouped sections - required by resource compiler together; bulk of file is skipped - if RC_INVOKED. Defined some error numbers and other names for - Borland compiler. - -2004-11-02 Ross Johnson <rpj at callisto.canberra.edu.au> - - * 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. - -2004-10-31 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. - * sem_wait.c (sem_wait): Use new 'lock'element. - * sem_timedwait.c (sem_timedwait): Likewise. - * sem_trywait.c (sem_trywait): Likewise. - * sem_post.c (sem_post): Likewise. - * sem_post_multiple.c (sem_post_multiple): Likewise. - * sem_getvalue.c (sem_getvalue): Likewise. - * ptw32_semwait.c (ptw32_semwait): Likewise. - * sem_destroy.c (sem_destroy): Likewise; also tightened the conditions - for semaphore destruction; in particular, a semaphore will not be - destroyed if it has waiters. - * sem_timedwait.c (sem_timedwait): Added cancel cleanup handler to - restore sema value when cancelled. - * sem_wait.c (sem_wait): Likewise. - -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> - - * 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. 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. - * sem_timedwait.c (sem_timedwait): Likewise. - * sem_post_multiple.c (sem_post_multiple): Likewise. - * sem_getvalue.c (sem_getvalue): Likewise. - * 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 (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. |