mirror of
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115 lines
2.6 KiB
C++
115 lines
2.6 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 TimerThread_h___
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#define TimerThread_h___
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#include "nsIObserver.h"
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#include "nsIRunnable.h"
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#include "nsIThread.h"
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#include "nsTimerImpl.h"
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#include "nsThreadUtils.h"
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#include "nsTArray.h"
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#include "mozilla/Atomics.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/Monitor.h"
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namespace mozilla {
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class TimeStamp;
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}
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class TimerThread MOZ_FINAL
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: public nsIRunnable
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, public nsIObserver
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{
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public:
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typedef mozilla::Monitor Monitor;
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typedef mozilla::TimeStamp TimeStamp;
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typedef mozilla::TimeDuration TimeDuration;
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TimerThread();
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nsresult InitLocks();
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIRUNNABLE
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NS_DECL_NSIOBSERVER
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nsresult Init();
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nsresult Shutdown();
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nsresult AddTimer(nsTimerImpl* aTimer);
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nsresult TimerDelayChanged(nsTimerImpl* aTimer);
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nsresult RemoveTimer(nsTimerImpl* aTimer);
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void DoBeforeSleep();
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void DoAfterSleep();
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bool IsOnTimerThread() const
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{
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return mThread == NS_GetCurrentThread();
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}
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private:
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~TimerThread();
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mozilla::Atomic<bool> mInitInProgress;
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bool mInitialized;
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// These two internal helper methods must be called while mLock is held.
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// AddTimerInternal returns the position where the timer was added in the
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// list, or -1 if it failed.
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int32_t AddTimerInternal(nsTimerImpl* aTimer);
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bool RemoveTimerInternal(nsTimerImpl* aTimer);
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void ReleaseTimerInternal(nsTimerImpl* aTimer);
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nsCOMPtr<nsIThread> mThread;
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Monitor mMonitor;
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bool mShutdown;
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bool mWaiting;
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bool mNotified;
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bool mSleeping;
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nsTArray<nsTimerImpl*> mTimers;
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};
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struct TimerAdditionComparator
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{
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TimerAdditionComparator(const mozilla::TimeStamp& aNow,
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nsTimerImpl* aTimerToInsert) :
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now(aNow)
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#ifdef DEBUG
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, timerToInsert(aTimerToInsert)
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#endif
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{
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}
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bool LessThan(nsTimerImpl* aFromArray, nsTimerImpl* aNewTimer) const
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{
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MOZ_ASSERT(aNewTimer == timerToInsert, "Unexpected timer ordering");
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// Skip any overdue timers.
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return aFromArray->mTimeout <= now ||
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aFromArray->mTimeout <= aNewTimer->mTimeout;
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}
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bool Equals(nsTimerImpl* aFromArray, nsTimerImpl* aNewTimer) const
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{
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return false;
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}
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private:
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const mozilla::TimeStamp& now;
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#ifdef DEBUG
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const nsTimerImpl* const timerToInsert;
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#endif
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};
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#endif /* TimerThread_h___ */
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