47 lines
739 B
C++
47 lines
739 B
C++
// Copyright (C) 2007 Id Software, Inc.
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//
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#ifndef __SINGLETON_H__
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#define __SINGLETON_H__
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static sdLock singletonLock;
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template < typename T > class sdSingleton {
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public:
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sdSingleton( void ) { ; }
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private:
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~sdSingleton( void ) {
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DestroyInstance();
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}
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public:
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static T& GetInstance( void ) {
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if ( !instance ) {
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singletonLock.Acquire();
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if ( !instance ) {
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instance = new T;
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}
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singletonLock.Release();
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}
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return *instance;
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}
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static void DestroyInstance( void ) {
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if ( instance ) {
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delete instance;
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instance = NULL;
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}
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}
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private:
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static T* instance;
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};
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template < typename T > T* sdSingleton< T >::instance = NULL;
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#endif /* !__SINGLETON_H__ */
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