/*

 * Copyright (c) 2004-2006 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.

 *

 */

/*

 * Abstract:

 *	Implementation specific header files for atomic operations.

 */

#ifndef _CL_ATOMIC_OSD_H_

#define _CL_ATOMIC_OSD_H_

#include <complib/cl_types.h>

#include <complib/cl_spinlock.h>

#ifdef __cplusplus

#  define BEGIN_C_DECLS extern "C" {

#  define END_C_DECLS   }

#else				/* !__cplusplus */

#  define BEGIN_C_DECLS

#  define END_C_DECLS

#endif				/* __cplusplus */

BEGIN_C_DECLS

extern cl_spinlock_t cl_atomic_spinlock;

static inline int32_t cl_atomic_inc(IN atomic32_t * const p_value)

{

	int32_t new_val;

	cl_spinlock_acquire(&cl_atomic_spinlock);

	new_val = *p_value + 1;

	*p_value = new_val;

	cl_spinlock_release(&cl_atomic_spinlock);

	return (new_val);

}

static inline int32_t cl_atomic_dec(IN atomic32_t * const p_value)

{

	int32_t new_val;

	cl_spinlock_acquire(&cl_atomic_spinlock);

	new_val = *p_value - 1;

	*p_value = new_val;

	cl_spinlock_release(&cl_atomic_spinlock);

	return (new_val);

}

static inline int32_t

cl_atomic_add(IN atomic32_t * const p_value, IN const int32_t increment)

{

	int32_t new_val;

	cl_spinlock_acquire(&cl_atomic_spinlock);

	new_val = *p_value + increment;

	*p_value = new_val;

	cl_spinlock_release(&cl_atomic_spinlock);

	return (new_val);

}

static inline int32_t

cl_atomic_sub(IN atomic32_t * const p_value, IN const int32_t decrement)

{

	int32_t new_val;

	cl_spinlock_acquire(&cl_atomic_spinlock);

	new_val = *p_value - decrement;

	*p_value = new_val;

	cl_spinlock_release(&cl_atomic_spinlock);

	return (new_val);

}

END_C_DECLS

#endif				/* _CL_ATOMIC_OSD_H_ */