/*
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* Copyright (C) 2016 Rockchip Electronics Co., Ltd.
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* Authors:
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* Zhiqin Wei <wzq@rock-chips.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LIBS_RGA_SINGLETON_H
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#define _LIBS_RGA_SINGLETON_H
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#ifndef ANDROID
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#include "RgaMutex.h"
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#if defined(__clang__)
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wundefined-var-template"
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#endif
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template <typename TYPE>
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class Singleton {
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public:
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static TYPE& getInstance() {
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Mutex::Autolock _l(sLock);
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TYPE* instance = sInstance;
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if (instance == nullptr) {
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instance = new TYPE();
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sInstance = instance;
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}
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return *instance;
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}
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static bool hasInstance() {
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Mutex::Autolock _l(sLock);
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return sInstance != nullptr;
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}
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protected:
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~Singleton() { }
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Singleton() { }
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private:
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Singleton(const Singleton&);
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Singleton& operator = (const Singleton&);
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static Mutex sLock;
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static TYPE* sInstance;
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};
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#if defined(__clang__)
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#pragma clang diagnostic pop
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#endif
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#define RGA_SINGLETON_STATIC_INSTANCE(TYPE) \
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template<> ::Mutex \
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(::Singleton< TYPE >::sLock)(::Mutex::PRIVATE); \
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template<> TYPE* ::Singleton< TYPE >::sInstance(nullptr); /* NOLINT */ \
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template class ::Singleton< TYPE >;
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#endif //ANDROID
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#endif //_LIBS_RGA_SINGLETON_H
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