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openmpi/opal/threads/mutex.c

85 строки
2.3 KiB
C
Исходник Обычный вид История

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include "opal/threads/mutex.h"
/*
* If we have progress threads, always default to using threads.
* Otherwise, wait and see if some upper layer wants to use threads.
*/
bool opal_uses_threads = (bool) OMPI_ENABLE_PROGRESS_THREADS;
#ifdef __WINDOWS__
#include <windows.h>
static void opal_mutex_construct(opal_mutex_t *m)
{
InterlockedExchange(&m->m_lock, 0);
}
static void opal_mutex_destruct(opal_mutex_t *m)
{
}
#else
static void opal_mutex_construct(opal_mutex_t *m)
{
#if OMPI_HAVE_POSIX_THREADS
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
#if OMPI_ENABLE_DEBUG && OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK_NP
/* set type to ERRORCHECK so that we catch recursive locks */
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK_NP);
#elif OMPI_ENABLE_DEBUG && OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK
/* set type to ERRORCHECK so that we catch recursive locks */
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
#endif
pthread_mutex_init(&m->m_lock_pthread, &attr);
pthread_mutexattr_destroy(&attr);
#endif /* OMPI_HAVE_POSIX_THREADS */
#if OMPI_HAVE_SOLARIS_THREADS
mutex_init(&m->m_lock_solaris, USYNC_THREAD, NULL);
#endif
#if OPAL_HAVE_ATOMIC_SPINLOCKS
opal_atomic_init( &m->m_lock_atomic, OPAL_ATOMIC_UNLOCKED );
#endif
}
static void opal_mutex_destruct(opal_mutex_t *m)
{
#if OMPI_HAVE_POSIX_THREADS
pthread_mutex_destroy(&m->m_lock_pthread);
#endif
}
#endif
OBJ_CLASS_INSTANCE(opal_mutex_t,
opal_object_t,
opal_mutex_construct,
opal_mutex_destruct);