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