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/**
* @file llatomic.h
* @brief Base classes for atomic.
*
* $LicenseInfo:firstyear=2018&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2018, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLATOMIC_H
#define LL_LLATOMIC_H
#include "stdtypes.h"
#include <atomic>
template <typename Type, typename AtomicType = std::atomic< Type > > class LLAtomicBase
{
public:
LLAtomicBase() {};
LLAtomicBase(Type x) { mData.store(x); }
~LLAtomicBase() {};
operator const Type() { return mData; }
Type CurrentValue() const { return mData; }
Type operator =(const Type& x) { mData.store(x); return mData; }
void operator -=(Type x) { mData -= x; }
void operator +=(Type x) { mData += x; }
Type operator ++(int) { return mData++; }
Type operator --(int) { return mData--; }
Type operator ++() { return ++mData; }
Type operator --() { return --mData; }
private:
AtomicType mData;
};
// Typedefs for specialized versions. Using std::atomic_(u)int32_t to get the optimzed implementation.
#ifdef LL_WINDOWS
typedef LLAtomicBase<U32, std::atomic_uint32_t> LLAtomicU32;
typedef LLAtomicBase<S32, std::atomic_int32_t> LLAtomicS32;
#else
typedef LLAtomicBase<U32, std::atomic_uint> LLAtomicU32;
typedef LLAtomicBase<S32, std::atomic_int> LLAtomicS32;
#endif
typedef LLAtomicBase<bool, std::atomic_bool> LLAtomicBool;
#endif // LL_LLATOMIC_H
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