1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/threads/TimerThread.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,108 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef TimerThread_h___
1.10 +#define TimerThread_h___
1.11 +
1.12 +#include "nsIObserver.h"
1.13 +#include "nsIRunnable.h"
1.14 +#include "nsIThread.h"
1.15 +
1.16 +#include "nsTimerImpl.h"
1.17 +#include "nsThreadUtils.h"
1.18 +
1.19 +#include "nsTArray.h"
1.20 +
1.21 +#include "mozilla/Atomics.h"
1.22 +#include "mozilla/Attributes.h"
1.23 +#include "mozilla/Monitor.h"
1.24 +
1.25 +namespace mozilla {
1.26 +class TimeStamp;
1.27 +}
1.28 +
1.29 +class TimerThread MOZ_FINAL : public nsIRunnable,
1.30 + public nsIObserver
1.31 +{
1.32 +public:
1.33 + typedef mozilla::Monitor Monitor;
1.34 + typedef mozilla::TimeStamp TimeStamp;
1.35 + typedef mozilla::TimeDuration TimeDuration;
1.36 +
1.37 + TimerThread();
1.38 + NS_HIDDEN_(nsresult) InitLocks();
1.39 +
1.40 + NS_DECL_THREADSAFE_ISUPPORTS
1.41 + NS_DECL_NSIRUNNABLE
1.42 + NS_DECL_NSIOBSERVER
1.43 +
1.44 + NS_HIDDEN_(nsresult) Init();
1.45 + NS_HIDDEN_(nsresult) Shutdown();
1.46 +
1.47 + nsresult AddTimer(nsTimerImpl *aTimer);
1.48 + nsresult TimerDelayChanged(nsTimerImpl *aTimer);
1.49 + nsresult RemoveTimer(nsTimerImpl *aTimer);
1.50 +
1.51 + void DoBeforeSleep();
1.52 + void DoAfterSleep();
1.53 +
1.54 + bool IsOnTimerThread() const
1.55 + {
1.56 + return mThread == NS_GetCurrentThread();
1.57 + }
1.58 +
1.59 +private:
1.60 + ~TimerThread();
1.61 +
1.62 + mozilla::Atomic<bool> mInitInProgress;
1.63 + bool mInitialized;
1.64 +
1.65 + // These two internal helper methods must be called while mLock is held.
1.66 + // AddTimerInternal returns the position where the timer was added in the
1.67 + // list, or -1 if it failed.
1.68 + int32_t AddTimerInternal(nsTimerImpl *aTimer);
1.69 + bool RemoveTimerInternal(nsTimerImpl *aTimer);
1.70 + void ReleaseTimerInternal(nsTimerImpl *aTimer);
1.71 +
1.72 + nsCOMPtr<nsIThread> mThread;
1.73 + Monitor mMonitor;
1.74 +
1.75 + bool mShutdown;
1.76 + bool mWaiting;
1.77 + bool mNotified;
1.78 + bool mSleeping;
1.79 +
1.80 + nsTArray<nsTimerImpl*> mTimers;
1.81 +};
1.82 +
1.83 +struct TimerAdditionComparator {
1.84 + TimerAdditionComparator(const mozilla::TimeStamp &aNow,
1.85 + nsTimerImpl *aTimerToInsert) :
1.86 + now(aNow)
1.87 +#ifdef DEBUG
1.88 + , timerToInsert(aTimerToInsert)
1.89 +#endif
1.90 + {}
1.91 +
1.92 + bool LessThan(nsTimerImpl *fromArray, nsTimerImpl *newTimer) const {
1.93 + NS_ABORT_IF_FALSE(newTimer == timerToInsert, "Unexpected timer ordering");
1.94 +
1.95 + // Skip any overdue timers.
1.96 + return fromArray->mTimeout <= now ||
1.97 + fromArray->mTimeout <= newTimer->mTimeout;
1.98 + }
1.99 +
1.100 + bool Equals(nsTimerImpl* fromArray, nsTimerImpl* newTimer) const {
1.101 + return false;
1.102 + }
1.103 +
1.104 +private:
1.105 + const mozilla::TimeStamp &now;
1.106 +#ifdef DEBUG
1.107 + const nsTimerImpl * const timerToInsert;
1.108 +#endif
1.109 +};
1.110 +
1.111 +#endif /* TimerThread_h___ */
