GDAL
cpl_atomic_ops.h
1 /**********************************************************************
2  * $Id: cpl_atomic_ops.h 35921 2016-10-25 02:28:29Z goatbar $
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  *
12  * Permission is hereby granted, free of charge, to any person obtaining a
13  * copy of this software and associated documentation files (the "Software"),
14  * to deal in the Software without restriction, including without limitation
15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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
20  * in all copies or substantial portions of the Software.
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
25  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
28  * DEALINGS IN THE SOFTWARE.
29  ****************************************************************************/
30 
31 #ifndef CPL_ATOMIC_OPS_INCLUDED
32 #define CPL_ATOMIC_OPS_INCLUDED
33 
34 #include "cpl_port.h"
35 
37 
61 int CPL_DLL CPLAtomicAdd(volatile int* ptr, int increment);
62 
72 #define CPLAtomicInc(ptr) CPLAtomicAdd(ptr, 1)
73 
83 #define CPLAtomicDec(ptr) CPLAtomicAdd(ptr, -1)
84 
101 int CPLAtomicCompareAndExchange(volatile int* ptr, int oldval, int newval);
102 
103 CPL_C_END
104 
105 #endif /* CPL_ATOMIC_OPS_INCLUDED */
Core portability definitions for CPL.
#define CPL_C_START
Macro to start a block of C symbols.
Definition: cpl_port.h:352
#define CPL_C_END
Macro to end a block of C symbols.
Definition: cpl_port.h:354

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