127 lines
2.9 KiB
Plaintext
127 lines
2.9 KiB
Plaintext
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/*
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* Copyright (c) <2002-2005> <Jean-Philippe Barrette-LaPierre>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (curlpp), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef SINGLETON_HOLDER_INL
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#define SINGLETON_HOLDER_INL
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template
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<
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class T,
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template <class> class CreationPolicy,
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template <class> class LifetimePolicy,
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template <class> class ThreadingModel
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>
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T&
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utilspp::SingletonHolder
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<
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T,
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CreationPolicy,
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LifetimePolicy,
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ThreadingModel
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>
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::instance()
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{
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if (mInstance == NULL)
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{
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makeInstance();
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}
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return (*mInstance);
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};
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template
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<
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class T,
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template <class> class CreationPolicy,
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template <class> class LifetimePolicy,
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template <class> class ThreadingModel
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>
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void
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utilspp::SingletonHolder
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<
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T,
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CreationPolicy,
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LifetimePolicy,
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ThreadingModel
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>::makeInstance()
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{
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if (mInstance == NULL)
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{
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typename ThreadingModel<T>::lock guard;
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(void)guard;
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if (mInstance == NULL) {
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if (mDestroyed)
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{
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LifetimePolicy<T>::onDeadReference();
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mDestroyed = false;
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}
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mInstance = CreationPolicy<T>::create();
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LifetimePolicy<T>::scheduleDestruction(mInstance, & destroySingleton);
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}
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}
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}
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template
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<
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class T,
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template <class> class CreationPolicy,
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template <class> class LifetimePolicy,
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template <class> class ThreadingModel
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>
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void
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utilspp::SingletonHolder
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<
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T,
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CreationPolicy,
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LifetimePolicy,
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ThreadingModel
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>
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::destroySingleton()
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{
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assert(!mDestroyed);
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CreationPolicy<T>::destroy(mInstance);
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mInstance = NULL;
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mDestroyed = true;
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}
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template <class T,
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template <class> class C,
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template <class> class L,
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template <class> class M
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>
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typename utilspp::SingletonHolder<T, C, L, M>::InstanceType
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utilspp::SingletonHolder<T, C, L, M>::mInstance;
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template
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<
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class T,
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template <class> class C,
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template <class> class L,
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template <class> class M
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>
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bool utilspp::SingletonHolder<T, C, L, M>::mDestroyed;
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#endif
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