summaryrefslogtreecommitdiff
path: root/spin.c
AgeCommit message (Collapse)Author
2002-02-08Copyright notice updates; module splitting; POSIX versionrpj
conditional compilation; refinements; bug fixes. See the ChangeLog.
2002-01-312002-01-27 Ross Johnson <rpj@special.ise.canberra.edu.au>rpj
* mutex.c (pthread_mutex_timedlock): New function suggested by Alexander Terekhov. The logic required to implement this properly came from Alexander, with some collaboration with Thomas Pfaff. (pthread_mutex_unlock): Wrap the waiters check and sema post in a critical section to prevent a race with pthread_mutex_timedlock. (ptw32_timed_semwait): New function; returns a special result if the absolute timeout parameter represents a time already passed when called; used by pthread_mutex_timedwait(). Have deliberately not reused the name "ptw32_sem_timedwait" because they are not the same routine. * condvar.c (ptw32_cond_timedwait): Use the new sem_timedwait() instead of ptw32_sem_timedwait(), which now has a different function. See previous. * implement.h: Remove prototype for ptw32_sem_timedwait. See next. (pthread_mutex_t_): Add critical section element for access to lock_idx during mutex post-timeout processing. * semaphore.h (sem_timedwait): See next. * semaphore.c (sem_timedwait): See next. * private.c (ptw32_sem_timedwait): Move to semaphore.c and rename as sem_timedwait(). 2002-01-18 Ross Johnson <rpj@special.ise.canberra.edu.au> * sync.c (pthread_join): Was getting the exit code from the calling thread rather than the joined thread if defined(__MINGW32__) && !defined(__MSVCRT__). 2002-01-15 Ross Johnson <rpj@special.ise.canberra.edu.au> * pthread.h: Unless the build explicitly defines __CLEANUP_SEH, __CLEANUP_CXX, or __CLEANUP_C, then the build defaults to __CLEANUP_C style cleanup. This style uses setjmp/longjmp in the cancelation and thread exit implementations and therefore won't do stack unwinding if linked to applications that have it (e.g. C++ apps). This is currently consistent with most/all commercial Unix POSIX threads implementations. * spin.c (pthread_spin_init): Edit renamed function call. * nonportable.c (pthread_num_processors_np): New. (pthread_getprocessors_np): Renamed to ptw32_getprocessors and moved to private.c. * private.c (pthread_getprocessors): Moved here from nonportable.c. * pthread.def (pthread_getprocessors_np): Removed from export list. * rwlock.c (pthread_rwlockattr_init): New. (pthread_rwlockattr_destroy): New. (pthread_rwlockattr_getpshared): New. (pthread_rwlockattr_setpshared): New.
2001-12-18Include an interim complete Copyright notice in each source file;rpj
Remove unused autoconf files; Add the file COPYING, which describes the pthread-win32 license relative to the FSF LGPL.
2001-10-25 * GNUmakefile (libwsock32): Add to linker flags forrpj
WSAGetLastError() and WSASetLastError(). * Makefile (wsock32.lib): Likewise. * create.c: Minor mostly inert changes. * implement.h (PTW32_MAX): Move into here and renamed from sched.h. (PTW32_MIN): Likewise. * GNUmakefile (TEST_ICE): Define if testing internal implementation of InterlockedCompareExchange. * Makefile (TEST_ICE): Likewise. * private.c (TEST_ICE): Likewise.
2001-10-25 * barrier.c: Move _LONG and _LPLONG defines intorpj
implement.h; rename to PTW32_INTERLOCKED_LONG and PTW32_INTERLOCKED_LPLONG respectively. * spin.c: Likewise; ptw32_interlocked_compare_exchange used in place of InterlockedCompareExchange directly. * global.c (ptw32_interlocked_compare_exchange): Add prototype for this new routine pointer to be used when InterlockedCompareExchange isn't supported by Windows. * nonportable.c (pthread_win32_process_attach_np): Check for support of InterlockedCompareExchange in kernel32 and assign its address to ptw32_interlocked_compare_exchange if it exists, or our own ix86 specific implementation ptw32_InterlockedCompareExchange. *private.c (ptw32_InterlockedCompareExchange): An implementation of InterlockedCompareExchange() which is specific to ix86; written directly in assembler for either MSVC or GNU C; needed because Windows 95 doesn't support InterlockedCompareExchange(). * sched.c (sched_get_priority_min): Extend to return THREAD_PRIORITY_IDLE. (sched_get_priority_max): Extend to return THREAD_PRIORITY_CRITICAL.
2001-10-15 * spin.c (pthread_spin_lock): PTHREAD_SPINLOCK_INITIALIZERrpj
was causing a program fault. (pthread_spin_init): Could have alloced memory without freeing under some error conditions. * mutex.c (pthread_mutex_init): Move memory allocation of mutex struct after checking for PROCESS_SHARED.
2001-10-12 * spin.c (pthread_spin_unlock): Was not returningrpj
EPERM if the spinlock was not locked, for multi CPU machines.
2001-10-08pthread_spin_trylock was not returning EBUSY on multi CPU machines.rpj
2001-07-10Untested revamp of barrier.c.rpj
* barrier.c: Still more revamping. The exclusive access mutex isn't really needed so it has been removed and replaced by an InterlockedDecrement(). nSerial has been removed. iStep is now dual-purpose. The process shared attribute is now stored in the barrier struct. * implement.h (pthread_barrier_t_): Lost some/gained one elements. * private.c (ptw32_threadStart): Removed some comments.
2001-07-06Spinlocks and barriers fixed and working. Beta level.rpj
* 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.
2001-07-05Fixups to last commit.rpj
2001-07-05Added new routines from POSIX 1003.1j. This is alpha level code.rpj
* 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.