author James Willcox <jwillcox@mozilla.com>
Mon, 30 Jan 2012 16:47:19 -0500
changeset 88195 b735935813b2174fed1330293f25802c673b43ae
parent 79146 e7854b4d29ba905ae3994f821b160c989bac4260
child 98529 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Bug 719872 (part 1) - Backout 8de271eee34b r=mattwoodrow DONTBUILD

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is mozilla.org code.
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 *   Stuart Parmenter <pavlov@netscape.com>
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */

#ifndef TimerThread_h___
#define TimerThread_h___

#include "nsIObserver.h"
#include "nsIRunnable.h"
#include "nsIThread.h"

#include "nsTimerImpl.h"

#include "nsTArray.h"

#include "mozilla/Monitor.h"
#include "mozilla/TimeStamp.h"

class TimerThread : public nsIRunnable,
                    public nsIObserver
  typedef mozilla::Monitor Monitor;
  typedef mozilla::TimeStamp TimeStamp;
  typedef mozilla::TimeDuration TimeDuration;

  NS_HIDDEN_(nsresult) InitLocks();

  NS_HIDDEN_(nsresult) Init();
  NS_HIDDEN_(nsresult) Shutdown();

  nsresult AddTimer(nsTimerImpl *aTimer);
  nsresult TimerDelayChanged(nsTimerImpl *aTimer);
  nsresult RemoveTimer(nsTimerImpl *aTimer);

#define FILTER_DURATION         1e3     /* one second */
#define FILTER_FEEDBACK_MAX     100     /* 1/10th of a second */

  void UpdateFilter(PRUint32 aDelay, TimeStamp aTimeout,
                    TimeStamp aNow);

  void DoBeforeSleep();
  void DoAfterSleep();


  PRInt32 mInitInProgress;
  bool    mInitialized;

  // These two internal helper methods must be called while mLock is held.
  // AddTimerInternal returns the position where the timer was added in the
  // list, or -1 if it failed.
  PRInt32 AddTimerInternal(nsTimerImpl *aTimer);
  bool    RemoveTimerInternal(nsTimerImpl *aTimer);
  void    ReleaseTimerInternal(nsTimerImpl *aTimer);

  nsCOMPtr<nsIThread> mThread;
  Monitor mMonitor;

  bool mShutdown;
  bool mWaiting;
  bool mSleeping;
  nsTArray<nsTimerImpl*> mTimers;


  PRInt32  mDelayLine[DELAY_LINE_LENGTH]; // milliseconds
  PRUint32 mDelayLineCounter;
  PRUint32 mMinTimerPeriod;     // milliseconds
  TimeDuration mTimeoutAdjustment;

#endif /* TimerThread_h___ */