xpcom/threads/HangMonitor.h
author Gregory Szorc <gps@mozilla.com>
Tue, 06 Nov 2012 17:00:19 -0800
changeset 112403 f561a4ffeeb9f523fb59c678b7ac901763e32911
parent 94825 831ff2eb9a281b918276f4998b43dfec141f0b62
child 185145 747dc2140460792408f3a799fd00fd5b1a4e6741
permissions -rw-r--r--
Bug 808346 - Don't scan sys.path to discover mach commands; r=jhammel All mach modules are now explicitly listed in the mach driver.

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 mozilla_HangMonitor_h
#define mozilla_HangMonitor_h

namespace mozilla { namespace HangMonitor {

/**
 * Signifies the type of activity in question
*/
enum ActivityType {
  /* There is activity and it is known to be UI related activity. */
  kUIActivity,

  /* There is non UI activity and no UI activity is pending */
  kActivityNoUIAVail,

  /* There is non UI activity and UI activity is known to be pending */
  kActivityUIAVail,

  /* There is non UI activity and UI activity pending is unknown */
  kGeneralActivity
};

/**
 * Start monitoring hangs. Should be called by the XPCOM startup process only.
 */
void Startup();

/**
 * Stop monitoring hangs and join the thread.
 */
void Shutdown();

/**
 * Notify the hang monitor of activity which will reset its internal timer.
 * 
 * @param activityType The type of activity being reported.
 * @see ActivityType
 */
void NotifyActivity(ActivityType activityType = kGeneralActivity);

/*
 * Notify the hang monitor that the browser is now idle and no detection should
 * be done.
 */
void Suspend();

} } // namespace mozilla::HangMonitor

#endif // mozilla_HangMonitor_h