зеркало из https://github.com/mozilla/gecko-dev.git
65 строки
1.8 KiB
C++
65 строки
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_recordreplay_Monitor_h
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#define mozilla_recordreplay_Monitor_h
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#include "mozilla/PlatformConditionVariable.h"
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namespace mozilla {
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namespace recordreplay {
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// Simple wrapper around mozglue mutexes and condvars. This is a lighter weight
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// abstraction than mozilla::Monitor and has simpler interactions with the
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// record/replay system.
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class Monitor : public detail::MutexImpl {
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public:
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Monitor() : detail::MutexImpl(Behavior::DontPreserve) {}
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void Lock() { detail::MutexImpl::lock(); }
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void Unlock() { detail::MutexImpl::unlock(); }
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void Wait() { mCondVar.wait(*this); }
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void Notify() { mCondVar.notify_one(); }
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void NotifyAll() { mCondVar.notify_all(); }
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void WaitUntil(TimeStamp aTime) {
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AutoEnsurePassThroughThreadEvents pt;
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mCondVar.wait_for(*this, aTime - TimeStamp::Now());
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}
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private:
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detail::ConditionVariableImpl mCondVar;
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};
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// RAII class to lock a monitor.
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struct MOZ_RAII MonitorAutoLock {
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explicit MonitorAutoLock(Monitor& aMonitor) : mMonitor(aMonitor) {
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mMonitor.Lock();
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}
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~MonitorAutoLock() { mMonitor.Unlock(); }
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private:
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Monitor& mMonitor;
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};
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// RAII class to unlock a monitor.
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struct MOZ_RAII MonitorAutoUnlock {
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explicit MonitorAutoUnlock(Monitor& aMonitor) : mMonitor(aMonitor) {
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mMonitor.Unlock();
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}
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~MonitorAutoUnlock() { mMonitor.Lock(); }
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private:
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Monitor& mMonitor;
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};
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} // namespace recordreplay
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} // namespace mozilla
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#endif // mozilla_recordreplay_Monitor_h
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