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46 lines
861 B
C++
46 lines
861 B
C++
/*++
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Copyright (c) 2019 Microsoft Corporation
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Module Name:
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mutex.h
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Abstract:
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Auxiliary macros for mutual exclusion
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--*/
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#pragma once
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#ifdef SINGLE_THREAD
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template<typename T> using atomic = T;
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struct mutex {
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void lock() {}
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void unlock() {}
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};
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struct lock_guard {
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lock_guard(mutex &) {}
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};
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#define DECLARE_MUTEX(name) mutex *name = nullptr
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#define DECLARE_INIT_MUTEX(name) mutex *name = nullptr
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#define ALLOC_MUTEX(name) (void)0
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#define DEALLOC_MUTEX(name) (void)0
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#else
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#include <atomic>
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#include <mutex>
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template<typename T> using atomic = std::atomic<T>;
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typedef std::mutex mutex;
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typedef std::lock_guard<std::mutex> lock_guard;
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#define DECLARE_MUTEX(name) mutex *name = nullptr
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#define DECLARE_INIT_MUTEX(name) mutex *name = new mutex
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#define ALLOC_MUTEX(name) name = alloc(mutex)
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#define DEALLOC_MUTEX(name) dealloc(name)
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#endif
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