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/*
* 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 (c) 2007 Los Alamos National Security, LLC. 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) OPAL_ENABLE_PROGRESS_THREADS;
bool opal_mutex_check_locks = false;
#ifdef __WINDOWS__
static void opal_mutex_construct(opal_mutex_t *m)
{
InterlockedExchange(&m->m_lock, 0);
#if !OPAL_HAVE_THREAD_SUPPORT && OPAL_ENABLE_DEBUG
m->m_lock_debug = 0;
m->m_lock_file = NULL;
m->m_lock_line = 0;
#endif /* !OPAL_HAVE_THREAD_SUPPORT && OPAL_ENABLE_DEBUG */
}
static void opal_mutex_destruct(opal_mutex_t *m)
{
}
#else
static void opal_mutex_construct(opal_mutex_t *m)
{
#if OPAL_HAVE_POSIX_THREADS
#if OPAL_ENABLE_DEBUG
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
/* set type to ERRORCHECK so that we catch recursive locks */
#if OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK_NP
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK_NP);
#elif OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
#endif /* OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK_NP */
pthread_mutex_init(&m->m_lock_pthread, &attr);
pthread_mutexattr_destroy(&attr);
#else
/* Without debugging, choose the fastest available mutexes */
pthread_mutex_init(&m->m_lock_pthread, NULL);
#endif /* OPAL_ENABLE_DEBUG */
#elif OPAL_HAVE_SOLARIS_THREADS
mutex_init(&m->m_lock_solaris, USYNC_THREAD, NULL);
#endif
#if OPAL_ENABLE_DEBUG && !OPAL_HAVE_THREAD_SUPPORT
m->m_lock_debug = 0;
m->m_lock_file = NULL;
m->m_lock_line = 0;
#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 OPAL_HAVE_POSIX_THREADS
pthread_mutex_destroy(&m->m_lock_pthread);
#elif OPAL_HAVE_SOLARIS_THREADS
mutex_destroy(&m->m_lock_solaris);
#endif
}
#endif /* __WINDOWS__ */
OBJ_CLASS_INSTANCE(opal_mutex_t,
opal_object_t,
opal_mutex_construct,
opal_mutex_destruct);
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