/*
* Copyright (c) 2004, 2005 Voltaire, Inc. All rights reserved.
* Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved.
* Copyright (c) 1996-2003 Intel Corporation. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <complib/cl_spinlock.h>
void cl_spinlock_construct(IN cl_spinlock_t * const p_spinlock)
{
CL_ASSERT(p_spinlock);
p_spinlock->state = CL_UNINITIALIZED;
}
cl_status_t cl_spinlock_init(IN cl_spinlock_t * const p_spinlock)
{
CL_ASSERT(p_spinlock);
cl_spinlock_construct(p_spinlock);
/* Initialize with pthread_mutexattr_t = NULL */
if (pthread_mutex_init(&p_spinlock->mutex, NULL))
return (CL_ERROR);
p_spinlock->state = CL_INITIALIZED;
return (CL_SUCCESS);
}
void cl_spinlock_destroy(IN cl_spinlock_t * const p_spinlock)
{
CL_ASSERT(p_spinlock);
CL_ASSERT(cl_is_state_valid(p_spinlock->state));
if (p_spinlock->state == CL_INITIALIZED) {
p_spinlock->state = CL_UNINITIALIZED;
pthread_mutex_lock(&p_spinlock->mutex);
pthread_mutex_unlock(&p_spinlock->mutex);
pthread_mutex_destroy(&p_spinlock->mutex);
}
p_spinlock->state = CL_UNINITIALIZED;
}
void cl_spinlock_acquire(IN cl_spinlock_t * const p_spinlock)
{
CL_ASSERT(p_spinlock);
CL_ASSERT(p_spinlock->state == CL_INITIALIZED);
pthread_mutex_lock(&p_spinlock->mutex);
}
void cl_spinlock_release(IN cl_spinlock_t * const p_spinlock)
{
CL_ASSERT(p_spinlock);
CL_ASSERT(p_spinlock->state == CL_INITIALIZED);
pthread_mutex_unlock(&p_spinlock->mutex);
}