/*

 * 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);

}