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Diffstat (limited to 'liblo/pthreads.2/ChangeLog')
| -rw-r--r-- | liblo/pthreads.2/ChangeLog | 4821 |
1 files changed, 4821 insertions, 0 deletions
diff --git a/liblo/pthreads.2/ChangeLog b/liblo/pthreads.2/ChangeLog new file mode 100644 index 0000000..d26d980 --- /dev/null +++ b/liblo/pthreads.2/ChangeLog @@ -0,0 +1,4821 @@ +2006-12-20 Ross Johnson <ross.johnson@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.
|