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conditional compilation; refinements; bug fixes. See the ChangeLog.
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* mutex.c (pthread_mutex_timedlock): New function suggested by
Alexander Terekhov. The logic required to implement this
properly came from Alexander, with some collaboration
with Thomas Pfaff.
(pthread_mutex_unlock): Wrap the waiters check and sema
post in a critical section to prevent a race with
pthread_mutex_timedlock.
(ptw32_timed_semwait): New function;
returns a special result if the absolute timeout parameter
represents a time already passed when called; used by
pthread_mutex_timedwait(). Have deliberately not reused
the name "ptw32_sem_timedwait" because they are not the same
routine.
* condvar.c (ptw32_cond_timedwait): Use the new sem_timedwait()
instead of ptw32_sem_timedwait(), which now has a different
function. See previous.
* implement.h: Remove prototype for ptw32_sem_timedwait.
See next.
(pthread_mutex_t_): Add critical section element for access
to lock_idx during mutex post-timeout processing.
* semaphore.h (sem_timedwait): See next.
* semaphore.c (sem_timedwait): See next.
* private.c (ptw32_sem_timedwait): Move to semaphore.c
and rename as sem_timedwait().
2002-01-18 Ross Johnson <rpj@special.ise.canberra.edu.au>
* sync.c (pthread_join): Was getting the exit code from the
calling thread rather than the joined thread if
defined(__MINGW32__) && !defined(__MSVCRT__).
2002-01-15 Ross Johnson <rpj@special.ise.canberra.edu.au>
* pthread.h: Unless the build explicitly defines __CLEANUP_SEH,
__CLEANUP_CXX, or __CLEANUP_C, then the build defaults to
__CLEANUP_C style cleanup. This style uses setjmp/longjmp
in the cancelation and thread exit implementations and therefore
won't do stack unwinding if linked to applications that have it
(e.g. C++ apps). This is currently consistent with most/all
commercial Unix POSIX threads implementations.
* spin.c (pthread_spin_init): Edit renamed function call.
* nonportable.c (pthread_num_processors_np): New.
(pthread_getprocessors_np): Renamed to ptw32_getprocessors
and moved to private.c.
* private.c (pthread_getprocessors): Moved here from
nonportable.c.
* pthread.def (pthread_getprocessors_np): Removed
from export list.
* rwlock.c (pthread_rwlockattr_init): New.
(pthread_rwlockattr_destroy): New.
(pthread_rwlockattr_getpshared): New.
(pthread_rwlockattr_setpshared): New.
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Remove unused autoconf files;
Add the file COPYING, which describes the pthread-win32 license
relative to the FSF LGPL.
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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.
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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.
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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.
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EPERM if the spinlock was not locked, for multi CPU
machines.
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* 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.
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* spin.c: Revamped and working; included static initialiser.
* 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.
tests/ChangeLog:
* spin3.c: Changed test and fixed.
* spin4.c: Fixed.
* barrier3.c: Fixed.
* barrier4.c: Fixed.
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* 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.
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