/usr/include/infiniband/complib/cl_atomic.h is in libopensm-dev 3.3.20-1.
This file is owned by root:root, with mode 0o644.
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* 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:
* Declaration of atomic manipulation functions.
*/
#ifndef _CL_ATOMIC_H_
#define _CL_ATOMIC_H_
#include <complib/cl_atomic_osd.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
/****h* Component Library/Atomic Operations
* NAME
* Atomic Operations
*
* DESCRIPTION
* The Atomic Operations functions allow callers to operate on
* 32-bit signed integers in an atomic fashion.
*********/
/****f* Component Library: Atomic Operations/cl_atomic_inc
* NAME
* cl_atomic_inc
*
* DESCRIPTION
* The cl_atomic_inc function atomically increments a 32-bit signed
* integer and returns the incremented value.
*
* SYNOPSIS
*/
int32_t cl_atomic_inc(IN atomic32_t * const p_value);
/*
* PARAMETERS
* p_value
* [in] Pointer to a 32-bit integer to increment.
*
* RETURN VALUE
* Returns the incremented value pointed to by p_value.
*
* NOTES
* The provided value is incremented and its value returned in one atomic
* operation.
*
* cl_atomic_inc maintains data consistency without requiring additional
* synchronization mechanisms in multi-threaded environments.
*
* SEE ALSO
* Atomic Operations, cl_atomic_dec, cl_atomic_add, cl_atomic_sub
*********/
/****f* Component Library: Atomic Operations/cl_atomic_dec
* NAME
* cl_atomic_dec
*
* DESCRIPTION
* The cl_atomic_dec function atomically decrements a 32-bit signed
* integer and returns the decremented value.
*
* SYNOPSIS
*/
int32_t cl_atomic_dec(IN atomic32_t * const p_value);
/*
* PARAMETERS
* p_value
* [in] Pointer to a 32-bit integer to decrement.
*
* RETURN VALUE
* Returns the decremented value pointed to by p_value.
*
* NOTES
* The provided value is decremented and its value returned in one atomic
* operation.
*
* cl_atomic_dec maintains data consistency without requiring additional
* synchronization mechanisms in multi-threaded environments.
*
* SEE ALSO
* Atomic Operations, cl_atomic_inc, cl_atomic_add, cl_atomic_sub
*********/
/****f* Component Library: Atomic Operations/cl_atomic_add
* NAME
* cl_atomic_add
*
* DESCRIPTION
* The cl_atomic_add function atomically adds a value to a
* 32-bit signed integer and returns the resulting value.
*
* SYNOPSIS
*/
int32_t
cl_atomic_add(IN atomic32_t * const p_value, IN const int32_t increment);
/*
* PARAMETERS
* p_value
* [in] Pointer to a 32-bit integer that will be added to.
*
* increment
* [in] Value by which to increment the integer pointed to by p_value.
*
* RETURN VALUE
* Returns the value pointed to by p_value after the addition.
*
* NOTES
* The provided increment is added to the value and the result returned in
* one atomic operation.
*
* cl_atomic_add maintains data consistency without requiring additional
* synchronization mechanisms in multi-threaded environments.
*
* SEE ALSO
* Atomic Operations, cl_atomic_inc, cl_atomic_dec, cl_atomic_sub
*********/
/****f* Component Library: Atomic Operations/cl_atomic_sub
* NAME
* cl_atomic_sub
*
* DESCRIPTION
* The cl_atomic_sub function atomically subtracts a value from a
* 32-bit signed integer and returns the resulting value.
*
* SYNOPSIS
*/
int32_t
cl_atomic_sub(IN atomic32_t * const p_value, IN const int32_t decrement);
/*
* PARAMETERS
* p_value
* [in] Pointer to a 32-bit integer that will be subtracted from.
*
* decrement
* [in] Value by which to decrement the integer pointed to by p_value.
*
* RETURN VALUE
* Returns the value pointed to by p_value after the subtraction.
*
* NOTES
* The provided decrement is subtracted from the value and the result
* returned in one atomic operation.
*
* cl_atomic_sub maintains data consistency without requiring additional
* synchronization mechanisms in multi-threaded environments.
*
* SEE ALSO
* Atomic Operations, cl_atomic_inc, cl_atomic_dec, cl_atomic_add
*********/
END_C_DECLS
#endif /* _CL_ATOMIC_H_ */
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