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/pthread_rwlock_tryrdlock.c | 102 -------------------------------- 1 file changed, 102 deletions(-) delete mode 100644 pthreads/src/pthread_rwlock_tryrdlock.c (limited to 'pthreads/src/pthread_rwlock_tryrdlock.c') diff --git a/pthreads/src/pthread_rwlock_tryrdlock.c b/pthreads/src/pthread_rwlock_tryrdlock.c deleted file mode 100644 index 0fc5458..0000000 --- a/pthreads/src/pthread_rwlock_tryrdlock.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * pthread_rwlock_tryrdlock.c - * - * Description: - * This translation unit implements read/write lock primitives. - * - * -------------------------------------------------------------------------- - * - * 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 - -#include "pthread.h" -#include "implement.h" - -int -pthread_rwlock_tryrdlock (pthread_rwlock_t * rwlock) -{ - int result; - pthread_rwlock_t rwl; - - if (rwlock == NULL || *rwlock == NULL) - { - return EINVAL; - } - - /* - * We do a quick check to see if we need to do more work - * to initialise a static rwlock. We check - * again inside the guarded section of ptw32_rwlock_check_need_init() - * to avoid race conditions. - */ - if (*rwlock == PTHREAD_RWLOCK_INITIALIZER) - { - result = ptw32_rwlock_check_need_init (rwlock); - - if (result != 0 && result != EBUSY) - { - return result; - } - } - - rwl = *rwlock; - - if (rwl->nMagic != PTW32_RWLOCK_MAGIC) - { - return EINVAL; - } - - if ((result = pthread_mutex_trylock (&(rwl->mtxExclusiveAccess))) != 0) - { - return result; - } - - if (++rwl->nSharedAccessCount == INT_MAX) - { - if ((result = - pthread_mutex_lock (&(rwl->mtxSharedAccessCompleted))) != 0) - { - (void) pthread_mutex_unlock (&(rwl->mtxExclusiveAccess)); - return result; - } - - rwl->nSharedAccessCount -= rwl->nCompletedSharedAccessCount; - rwl->nCompletedSharedAccessCount = 0; - - if ((result = - pthread_mutex_unlock (&(rwl->mtxSharedAccessCompleted))) != 0) - { - (void) pthread_mutex_unlock (&(rwl->mtxExclusiveAccess)); - return result; - } - } - - return (pthread_mutex_unlock (&rwl->mtxExclusiveAccess)); -} -- cgit v1.2.3