32 lines
464 B
C
32 lines
464 B
C
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#ifndef SINGLETON_H_INCLUDED
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#define SINGLETON_H_INCLUDED
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#include <memory>
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#include <cassert>
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#include <thread>
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#include <mutex>
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namespace Loki
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{
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template <typename T>
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struct SingletonHolder
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{
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static T& Instance()
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{
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static std::once_flag onceFlag;
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static std::unique_ptr<T> singleton;
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std::call_once(onceFlag,
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[] {
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singleton = std::make_unique<T>();
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});
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return *singleton.get();
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}
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};
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}
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#endif
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