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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef threading_LockGuard_h
#define threading_LockGuard_h
#include "mozilla/Attributes.h"
namespace js {
template <typename GuardT>
class MOZ_RAII UnlockGuard;
template <typename Mutex>
class MOZ_RAII LockGuard {
friend class UnlockGuard<LockGuard<Mutex>>;
friend class ConditionVariable;
Mutex& mutex;
public:
explicit LockGuard(Mutex& mutex) : mutex(mutex) { lock(); }
~LockGuard() { unlock(); }
LockGuard(const LockGuard& other) = delete;
protected:
void lock() { mutex.lock(); }
void unlock() { mutex.unlock(); }
};
// RAII class to temporarily unlock a LockGuard.
template <typename GuardT>
class MOZ_RAII UnlockGuard {
GuardT& guard;
public:
explicit UnlockGuard(GuardT& guard) : guard(guard) { guard.unlock(); }
~UnlockGuard() { guard.lock(); }
UnlockGuard(const UnlockGuard& other) = delete;
};
} // namespace js
#endif // threading_LockGuard_h
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