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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libgomp/] [config/] [posix/] [lock.c] - Rev 288
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/* Copyright (C) 2005, 2008, 2009 Free Software Foundation, Inc. Contributed by Richard Henderson <rth@redhat.com>. This file is part of the GNU OpenMP Library (libgomp). Libgomp is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. Libgomp 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 General Public License for more details. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ /* This is the default PTHREADS implementation of the public OpenMP locking primitives. Because OpenMP uses different entry points for normal and recursive locks, and pthreads uses only one entry point, a system may be able to do better and streamline the locking as well as reduce the size of the types exported. */ /* We need Unix98 extensions to get recursive locks. On Tru64 UNIX V4.0F, the declarations are available without _XOPEN_SOURCE, which actually breaks compilation. */ #ifndef __osf__ #define _XOPEN_SOURCE 500 #endif #include "libgomp.h" #ifdef HAVE_BROKEN_POSIX_SEMAPHORES void gomp_init_lock_30 (omp_lock_t *lock) { pthread_mutex_init (lock, NULL); } void gomp_destroy_lock_30 (omp_lock_t *lock) { pthread_mutex_destroy (lock); } void gomp_set_lock_30 (omp_lock_t *lock) { pthread_mutex_lock (lock); } void gomp_unset_lock_30 (omp_lock_t *lock) { pthread_mutex_unlock (lock); } int gomp_test_lock_30 (omp_lock_t *lock) { return pthread_mutex_trylock (lock) == 0; } void gomp_init_nest_lock_30 (omp_nest_lock_t *lock) { pthread_mutex_init (&lock->lock, NULL); lock->count = 0; lock->owner = NULL; } void gomp_destroy_nest_lock_30 (omp_nest_lock_t *lock) { pthread_mutex_destroy (&lock->lock); } void gomp_set_nest_lock_30 (omp_nest_lock_t *lock) { void *me = gomp_icv (true); if (lock->owner != me) { pthread_mutex_lock (&lock->lock); lock->owner = me; } lock->count++; } void gomp_unset_nest_lock_30 (omp_nest_lock_t *lock) { if (--lock->count == 0) { lock->owner = NULL; pthread_mutex_unlock (&lock->lock); } } int gomp_test_nest_lock_30 (omp_nest_lock_t *lock) { void *me = gomp_icv (true); if (lock->owner != me) { if (pthread_mutex_trylock (&lock->lock) != 0) return 0; lock->owner = me; } return ++lock->count; } #else void gomp_init_lock_30 (omp_lock_t *lock) { sem_init (lock, 0, 1); } void gomp_destroy_lock_30 (omp_lock_t *lock) { sem_destroy (lock); } void gomp_set_lock_30 (omp_lock_t *lock) { while (sem_wait (lock) != 0) ; } void gomp_unset_lock_30 (omp_lock_t *lock) { sem_post (lock); } int gomp_test_lock_30 (omp_lock_t *lock) { return sem_trywait (lock) == 0; } void gomp_init_nest_lock_30 (omp_nest_lock_t *lock) { sem_init (&lock->lock, 0, 1); lock->count = 0; lock->owner = NULL; } void gomp_destroy_nest_lock_30 (omp_nest_lock_t *lock) { sem_destroy (&lock->lock); } void gomp_set_nest_lock_30 (omp_nest_lock_t *lock) { void *me = gomp_icv (true); if (lock->owner != me) { while (sem_wait (&lock->lock) != 0) ; lock->owner = me; } lock->count++; } void gomp_unset_nest_lock_30 (omp_nest_lock_t *lock) { if (--lock->count == 0) { lock->owner = NULL; sem_post (&lock->lock); } } int gomp_test_nest_lock_30 (omp_nest_lock_t *lock) { void *me = gomp_icv (true); if (lock->owner != me) { if (sem_trywait (&lock->lock) != 0) return 0; lock->owner = me; } return ++lock->count; } #endif #ifdef LIBGOMP_GNU_SYMBOL_VERSIONING void gomp_init_lock_25 (omp_lock_25_t *lock) { pthread_mutex_init (lock, NULL); } void gomp_destroy_lock_25 (omp_lock_25_t *lock) { pthread_mutex_destroy (lock); } void gomp_set_lock_25 (omp_lock_25_t *lock) { pthread_mutex_lock (lock); } void gomp_unset_lock_25 (omp_lock_25_t *lock) { pthread_mutex_unlock (lock); } int gomp_test_lock_25 (omp_lock_25_t *lock) { return pthread_mutex_trylock (lock) == 0; } void gomp_init_nest_lock_25 (omp_nest_lock_25_t *lock) { pthread_mutexattr_t attr; pthread_mutexattr_init (&attr); pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE); pthread_mutex_init (&lock->lock, &attr); lock->count = 0; pthread_mutexattr_destroy (&attr); } void gomp_destroy_nest_lock_25 (omp_nest_lock_25_t *lock) { pthread_mutex_destroy (&lock->lock); } void gomp_set_nest_lock_25 (omp_nest_lock_25_t *lock) { pthread_mutex_lock (&lock->lock); lock->count++; } void gomp_unset_nest_lock_25 (omp_nest_lock_25_t *lock) { lock->count--; pthread_mutex_unlock (&lock->lock); } int gomp_test_nest_lock_25 (omp_nest_lock_25_t *lock) { if (pthread_mutex_trylock (&lock->lock) == 0) return ++lock->count; return 0; } omp_lock_symver (omp_init_lock) omp_lock_symver (omp_destroy_lock) omp_lock_symver (omp_set_lock) omp_lock_symver (omp_unset_lock) omp_lock_symver (omp_test_lock) omp_lock_symver (omp_init_nest_lock) omp_lock_symver (omp_destroy_nest_lock) omp_lock_symver (omp_set_nest_lock) omp_lock_symver (omp_unset_nest_lock) omp_lock_symver (omp_test_nest_lock) #else ialias (omp_init_lock) ialias (omp_init_nest_lock) ialias (omp_destroy_lock) ialias (omp_destroy_nest_lock) ialias (omp_set_lock) ialias (omp_set_nest_lock) ialias (omp_unset_lock) ialias (omp_unset_nest_lock) ialias (omp_test_lock) ialias (omp_test_nest_lock) #endif
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