genesis-3d_engine/Engine/foundation/threading/osx/osxinterlocked.h

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/****************************************************************************
Copyright (c) 2010, Radon Labs GmbH
Copyright (c) 2011-2013,WebJet Business Division,CYOU
http://www.genesis-3d.com.cn
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
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.
****************************************************************************/
#pragma once
#include "core/types.h"
//------------------------------------------------------------------------------
namespace OSX
{
class OSXInterlocked
{
public:
/// interlocked increment
static int Increment(int volatile& var);
/// interlocked decrement
static int Decrement(int volatile& var);
/// interlocked add
static void Add(int volatile& var, int add);
/// interlocked exchange
static int Exchange(int volatile* dest, int value);
/// interlocked compare-exchange
static int CompareExchange(int volatile* dest, int exchange, int comparand);
};
//------------------------------------------------------------------------------
/**
*/
inline int
OSXInterlocked::Increment(int volatile& var)
{
return __sync_add_and_fetch(&var, 1);
}
//------------------------------------------------------------------------------
/**
*/
inline int
OSXInterlocked::Decrement(int volatile& var)
{
return __sync_sub_and_fetch(&var, 1);
}
//------------------------------------------------------------------------------
/**
*/
inline void
OSXInterlocked::Add(int volatile& var, int add)
{
__sync_add_and_fetch(&var, add);
}
//------------------------------------------------------------------------------
/**
*/
inline int
OSXInterlocked::Exchange(int volatile* dest, int value)
{
return __sync_lock_test_and_set(dest, value);
}
//------------------------------------------------------------------------------
/**
*/
inline int
OSXInterlocked::CompareExchange(int volatile* dest, int exchange, int comparand)
{
return __sync_val_compare_and_swap(dest, comparand, exchange);
}
} // namespace OSX
//------------------------------------------------------------------------------