From 682f23e7bb4a52bedf46eff5c4859e1308eda124 Mon Sep 17 00:00:00 2001 From: Michał Cichoń Date: Tue, 25 Aug 2015 19:56:24 +0200 Subject: Update build ref --- pthreads/src/sem_wait.c | 187 ------------------------------------------------ 1 file changed, 187 deletions(-) delete mode 100644 pthreads/src/sem_wait.c (limited to 'pthreads/src/sem_wait.c') diff --git a/pthreads/src/sem_wait.c b/pthreads/src/sem_wait.c deleted file mode 100644 index 50c11d8..0000000 --- a/pthreads/src/sem_wait.c +++ /dev/null @@ -1,187 +0,0 @@ -/* - * ------------------------------------------------------------- - * - * Module: sem_wait.c - * - * Purpose: - * Semaphores aren't actually part of the PThreads standard. - * They are defined by the POSIX Standard: - * - * POSIX 1003.1b-1993 (POSIX.1b) - * - * ------------------------------------------------------------- - * - * -------------------------------------------------------------------------- - * - * Pthreads-win32 - POSIX Threads Library for Win32 - * Copyright(C) 1998 John E. Bossom - * Copyright(C) 1999,2005 Pthreads-win32 contributors - * - * Contact Email: rpj@callisto.canberra.edu.au - * - * The current list of contributors is contained - * in the file CONTRIBUTORS included with the source - * code distribution. The list can also be seen at the - * following World Wide Web location: - * http://sources.redhat.com/pthreads-win32/contributors.html - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library in the file COPYING.LIB; - * if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include "pthread.h" -#include "semaphore.h" -#include "implement.h" - - -static void PTW32_CDECL -ptw32_sem_wait_cleanup(void * sem) -{ - sem_t s = (sem_t) sem; - - if (pthread_mutex_lock (&s->lock) == 0) - { - /* - * If sema is destroyed do nothing, otherwise:- - * If the sema is posted between us being cancelled and us locking - * the sema again above then we need to consume that post but cancel - * anyway. If we don't get the semaphore we indicate that we're no - * longer waiting. - */ - if (*((sem_t *)sem) != NULL && !(WaitForSingleObject(s->sem, 0) == WAIT_OBJECT_0)) - { - ++s->value; -#if defined(NEED_SEM) - if (s->value > 0) - { - s->leftToUnblock = 0; - } -#else - /* - * Don't release the W32 sema, it doesn't need adjustment - * because it doesn't record the number of waiters. - */ -#endif /* NEED_SEM */ - } - (void) pthread_mutex_unlock (&s->lock); - } -} - -int -sem_wait (sem_t * sem) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function waits on a semaphore. - * - * PARAMETERS - * sem - * pointer to an instance of sem_t - * - * DESCRIPTION - * This function waits on a semaphore. If the - * semaphore value is greater than zero, it decreases - * its value by one. If the semaphore value is zero, then - * the calling thread (or process) is blocked until it can - * successfully decrease the value or until interrupted by - * a signal. - * - * RESULTS - * 0 successfully decreased semaphore, - * -1 failed, error in errno - * ERRNO - * EINVAL 'sem' is not a valid semaphore, - * ENOSYS semaphores are not supported, - * EINTR the function was interrupted by a signal, - * EDEADLK a deadlock condition was detected. - * - * ------------------------------------------------------ - */ -{ - int result = 0; - sem_t s = *sem; - - pthread_testcancel(); - - if (s == NULL) - { - result = EINVAL; - } - else - { - if ((result = pthread_mutex_lock (&s->lock)) == 0) - { - int v; - - /* See sem_destroy.c - */ - if (*sem == NULL) - { - (void) pthread_mutex_unlock (&s->lock); - errno = EINVAL; - return -1; - } - - v = --s->value; - (void) pthread_mutex_unlock (&s->lock); - - if (v < 0) - { -#if defined(_MSC_VER) && _MSC_VER < 1400 -#pragma inline_depth(0) -#endif - /* Must wait */ - pthread_cleanup_push(ptw32_sem_wait_cleanup, (void *) s); - result = pthreadCancelableWait (s->sem); - /* Cleanup if we're canceled or on any other error */ - pthread_cleanup_pop(result); -#if defined(_MSC_VER) && _MSC_VER < 1400 -#pragma inline_depth() -#endif - } -#if defined(NEED_SEM) - - if (!result && pthread_mutex_lock (&s->lock) == 0) - { - if (*sem == NULL) - { - (void) pthread_mutex_unlock (&s->lock); - errno = EINVAL; - return -1; - } - - if (s->leftToUnblock > 0) - { - --s->leftToUnblock; - SetEvent(s->sem); - } - (void) pthread_mutex_unlock (&s->lock); - } - -#endif /* NEED_SEM */ - - } - - } - - if (result != 0) - { - errno = result; - return -1; - } - - return 0; - -} /* sem_wait */ -- cgit v1.2.3