GDAL
cpl_atomic_ops.h
1 /**********************************************************************
2  * $Id: cpl_atomic_ops.h 27044 2014-03-16 23:41:27Z rouault $
3  *
4  * Name: cpl_atomic_ops.h
5  * Project: CPL - Common Portability Library
6  * Purpose: Atomic operation functions.
7  * Author: Even Rouault, <even dot rouault at mines dash paris dot org>
8  *
9  **********************************************************************
10  * Copyright (c) 2009-2010, Even Rouault <even dot rouault at mines-paris dot org>
11  *
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13  * copy of this software and associated documentation files (the "Software"),
14  * to deal in the Software without restriction, including without limitation
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16  * and/or sell copies of the Software, and to permit persons to whom the
17  * Software is furnished to do so, subject to the following conditions:
18  *
19  * The above copyright notice and this permission notice shall be included
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21  *
22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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29  ****************************************************************************/
30 
31 #ifndef _CPL_ATOMIC_OPS_INCLUDED
32 #define _CPL_ATOMIC_OPS_INCLUDED
33 
34 #include "cpl_port.h"
35 
36 CPL_C_START
37 
61 int CPL_DLL CPLAtomicAdd(volatile int* ptr, int increment);
62 
72 #ifdef HAS_CPL_INLINE
73 CPL_INLINE int CPLAtomicInc(volatile int* ptr)
74 {
75  return CPLAtomicAdd(ptr, 1);
76 }
77 #else
78 int CPL_DLL CPLAtomicInc(volatile int* ptr);
79 #endif
80 
90 #ifdef HAS_CPL_INLINE
91 CPL_INLINE int CPLAtomicDec(volatile int* ptr)
92 {
93  return CPLAtomicAdd(ptr, -1);
94 }
95 #else
96 int CPL_DLL CPLAtomicDec(volatile int* ptr);
97 #endif
98 
99 CPL_C_END
100 
101 #endif /* _CPL_ATOMIC_OPS_INCLUDED */
Core portability definitions for CPL.

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