/*
* 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_ */