cpl_atomic_ops.h

/**********************************************************************
 *
 * Name:     cpl_atomic_ops.h
 * Project:  CPL - Common Portability Library
 * Purpose:  Atomic operation functions.
 * Author:   Even Rouault, <even dot rouault at spatialys.com>
 *
 **********************************************************************
 * Copyright (c) 2009-2010, Even Rouault <even dot rouault at spatialys.com>
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/
 
#ifndef CPL_ATOMIC_OPS_INCLUDED
#define CPL_ATOMIC_OPS_INCLUDED
 
#include "cpl_port.h"
 
CPL_C_START

int CPL_DLL CPLAtomicAdd(volatile int *ptr, int increment);

#define CPLAtomicInc(ptr) CPLAtomicAdd(ptr, 1)

#define CPLAtomicDec(ptr) CPLAtomicAdd(ptr, -1)

int CPLAtomicCompareAndExchange(volatile int *ptr, int oldval, int newval);
 
CPL_C_END
 
#endif /* CPL_ATOMIC_OPS_INCLUDED */