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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libgomp/] [config/] [posix95/] [lock.c] - Blame information for rev 300

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1 273 jeremybenn 
/* Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.
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   This file is part of the GNU OpenMP Library (libgomp).
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   Libgomp is free software; you can redistribute it and/or modify it
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   under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3, or (at your option)
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   any later version.
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   Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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   more details.
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   Under Section 7 of GPL version 3, you are granted additional
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   permissions described in the GCC Runtime Library Exception, version
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   3.1, as published by the Free Software Foundation.
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   You should have received a copy of the GNU General Public License and
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   a copy of the GCC Runtime Library Exception along with this program;
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   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
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   <http://www.gnu.org/licenses/>.  */
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/* This is the POSIX95 implementation of the public OpenMP locking primitives.
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   Because OpenMP uses different entry points for normal and recursive
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   locks, and pthreads uses only one entry point, a system may be able
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   to do better and streamline the locking as well as reduce the size
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   of the types exported.  */
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#include "libgomp.h"
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#ifdef HAVE_BROKEN_POSIX_SEMAPHORES
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void
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gomp_init_lock_30 (omp_lock_t *lock)
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{
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  pthread_mutex_init (lock, NULL);
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}
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void
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gomp_destroy_lock_30 (omp_lock_t *lock)
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{
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  pthread_mutex_destroy (lock);
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}
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void
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gomp_set_lock_30 (omp_lock_t *lock)
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{
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  pthread_mutex_lock (lock);
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}
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void
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gomp_unset_lock_30 (omp_lock_t *lock)
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{
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  pthread_mutex_unlock (lock);
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}
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int
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gomp_test_lock_30 (omp_lock_t *lock)
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{
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  return pthread_mutex_trylock (lock) == 0;
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}
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void
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gomp_init_nest_lock_30 (omp_nest_lock_t *lock)
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{
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  pthread_mutex_init (&lock->lock, NULL);
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  lock->owner = NULL;
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  lock->count = 0;
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}
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void
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gomp_destroy_nest_lock_30 (omp_nest_lock_t *lock)
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{
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  pthread_mutex_destroy (&lock->lock);
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}
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void
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gomp_set_nest_lock_30 (omp_nest_lock_t *lock)
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{
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  void *me = gomp_icv (true);
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  if (lock->owner != me)
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    {
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      pthread_mutex_lock (&lock->lock);
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      lock->owner = me;
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    }
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  lock->count++;
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}
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void
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gomp_unset_nest_lock_30 (omp_nest_lock_t *lock)
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{
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  lock->count--;
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  if (lock->count == 0)
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    {
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      lock->owner = NULL;
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      pthread_mutex_unlock (&lock->lock);
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    }
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}
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int
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gomp_test_nest_lock_30 (omp_nest_lock_t *lock)
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{
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  void *me = gomp_icv (true);
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  if (lock->owner != me)
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    {
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      if (pthread_mutex_trylock (&lock->lock) != 0)
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        return 0;
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      lock->owner = me;
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    }
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  return ++lock->count;
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}
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#else
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void
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gomp_init_lock_30 (omp_lock_t *lock)
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{
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  sem_init (lock, 0, 1);
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}
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void
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gomp_destroy_lock_30 (omp_lock_t *lock)
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{
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  sem_destroy (lock);
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}
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void
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gomp_set_lock_30 (omp_lock_t *lock)
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{
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  while (sem_wait (lock) != 0)
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    ;
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}
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void
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gomp_unset_lock_30 (omp_lock_t *lock)
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{
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  sem_post (lock);
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}
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int
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gomp_test_lock_30 (omp_lock_t *lock)
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{
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  return sem_trywait (lock) == 0;
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}
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void
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gomp_init_nest_lock_30 (omp_nest_lock_t *lock)
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{
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  sem_init (&lock->lock, 0, 1);
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  lock->count = 0;
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  lock->owner = NULL;
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}
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void
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gomp_destroy_nest_lock_30 (omp_nest_lock_t *lock)
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{
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  sem_destroy (&lock->lock);
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}
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void
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gomp_set_nest_lock_30 (omp_nest_lock_t *lock)
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{
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  void *me = gomp_icv (true);
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171 
  if (lock->owner != me)
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    {
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      while (sem_wait (&lock->lock) != 0)
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        ;
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      lock->owner = me;
176 
    }
177 
  lock->count++;
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}
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180 
void
181 
gomp_unset_nest_lock_30 (omp_nest_lock_t *lock)
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{
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  if (--lock->count == 0)
184 
    {
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      lock->owner = NULL;
186 
      sem_post (&lock->lock);
187 
    }
188 
}
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190 
int
191 
gomp_test_nest_lock_30 (omp_nest_lock_t *lock)
192 
{
193 
  void *me = gomp_icv (true);
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195 
  if (lock->owner != me)
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    {
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      if (sem_trywait (&lock->lock) != 0)
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        return 0;
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      lock->owner = me;
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    }
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  return ++lock->count;
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}
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#endif
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#ifdef LIBGOMP_GNU_SYMBOL_VERSIONING
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void
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gomp_init_lock_25 (omp_lock_25_t *lock)
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{
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  pthread_mutex_init (lock, NULL);
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}
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void
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gomp_destroy_lock_25 (omp_lock_25_t *lock)
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{
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  pthread_mutex_destroy (lock);
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}
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void
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gomp_set_lock_25 (omp_lock_25_t *lock)
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{
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  pthread_mutex_lock (lock);
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}
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225 
void
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gomp_unset_lock_25 (omp_lock_25_t *lock)
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{
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  pthread_mutex_unlock (lock);
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}
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231 
int
232 
gomp_test_lock_25 (omp_lock_25_t *lock)
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{
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  return pthread_mutex_trylock (lock) == 0;
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}
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237 
void
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gomp_init_nest_lock_25 (omp_nest_lock_25_t *lock)
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{
240 
  pthread_mutex_init (&lock->lock, NULL);
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  lock->owner = (pthread_t) 0;
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  lock->count = 0;
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}
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void
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gomp_destroy_nest_lock_25 (omp_nest_lock_25_t *lock)
247 
{
248 
  pthread_mutex_destroy (&lock->lock);
249 
}
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251 
void
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gomp_set_nest_lock_25 (omp_nest_lock_25_t *lock)
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{
254 
  pthread_t me = pthread_self ();
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256 
  if (lock->owner != me)
257 
    {
258 
      pthread_mutex_lock (&lock->lock);
259 
      lock->owner = me;
260 
    }
261 
 
262 
  lock->count++;
263 
}
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265 
void
266 
gomp_unset_nest_lock_25 (omp_nest_lock_25_t *lock)
267 
{
268 
  lock->count--;
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270 
  if (lock->count == 0)
271 
    {
272 
      lock->owner = (pthread_t) 0;
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      pthread_mutex_unlock (&lock->lock);
274 
    }
275 
}
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277 
int
278 
gomp_test_nest_lock_25 (omp_nest_lock_25_t *lock)
279 
{
280 
  pthread_t me = pthread_self ();
281 
 
282 
  if (lock->owner != me)
283 
    {
284 
      if (pthread_mutex_trylock (&lock->lock) != 0)
285 
        return 0;
286 
      lock->owner = me;
287 
    }
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289 
  return ++lock->count;
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}
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292 
omp_lock_symver (omp_init_lock)
293 
omp_lock_symver (omp_destroy_lock)
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omp_lock_symver (omp_set_lock)
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omp_lock_symver (omp_unset_lock)
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omp_lock_symver (omp_test_lock)
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omp_lock_symver (omp_init_nest_lock)
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omp_lock_symver (omp_destroy_nest_lock)
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omp_lock_symver (omp_set_nest_lock)
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omp_lock_symver (omp_unset_nest_lock)
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omp_lock_symver (omp_test_nest_lock)
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303 
#else
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ialias (omp_init_lock)
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ialias (omp_init_nest_lock)
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ialias (omp_destroy_lock)
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ialias (omp_destroy_nest_lock)
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ialias (omp_set_lock)
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ialias (omp_set_nest_lock)
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ialias (omp_unset_lock)
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ialias (omp_unset_nest_lock)
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ialias (omp_test_lock)
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ialias (omp_test_nest_lock)
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#endif

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