dom/ipc/ProcessHangMonitor.h
author André Bargull <andre.bargull@gmail.com>
Fri, 17 Aug 2018 14:30:37 -0700
changeset 432230 fd8d17192696250a5396894301478f36c6c75be7
parent 429191 383e6ae8f7d4d1961a56aa6f5a69b4c3e8c3e2e5
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1346211 - Part 7: Clobber after modifying ICU data file. r=clobber

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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_ProcessHangMonitor_h
#define mozilla_ProcessHangMonitor_h

#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/Atomics.h"
#include "nsCOMPtr.h"
#include "nsIObserver.h"
#include "nsStringFwd.h"

class nsIRunnable;
class nsITabChild;
class nsIThread;

namespace mozilla {

namespace dom {
class ContentParent;
class TabParent;
} // namespace dom

namespace layers {
struct LayersObserverEpoch;
} // namespace layers

class PProcessHangMonitorParent;

class ProcessHangMonitor final
  : public nsIObserver
{
 private:
  ProcessHangMonitor();
  virtual ~ProcessHangMonitor();

 public:
  static ProcessHangMonitor* Get() { return sInstance; }
  static ProcessHangMonitor* GetOrCreate();

  NS_DECL_ISUPPORTS
  NS_DECL_NSIOBSERVER

  static PProcessHangMonitorParent* AddProcess(dom::ContentParent* aContentParent);
  static void RemoveProcess(PProcessHangMonitorParent* aParent);

  static void ClearHang();

  static void PaintWhileInterruptingJS(PProcessHangMonitorParent* aParent,
                                       dom::TabParent* aTab,
                                       bool aForceRepaint,
                                       const layers::LayersObserverEpoch& aEpoch);
  static void ClearPaintWhileInterruptingJS(const layers::LayersObserverEpoch& aEpoch);
  static void MaybeStartPaintWhileInterruptingJS();

  enum SlowScriptAction {
    Continue,
    Terminate,
    StartDebugger,
    TerminateGlobal,
  };
  SlowScriptAction NotifySlowScript(nsITabChild* aTabChild,
                                    const char* aFileName,
                                    const nsString& aAddonId);

  void NotifyPluginHang(uint32_t aPluginId);

  bool IsDebuggerStartupComplete();

  void InitiateCPOWTimeout();
  bool ShouldTimeOutCPOWs();

  void Dispatch(already_AddRefed<nsIRunnable> aRunnable);
  bool IsOnThread();

 private:
  static ProcessHangMonitor* sInstance;

  Atomic<bool> mCPOWTimeout;

  nsCOMPtr<nsIThread> mThread;
};

} // namespace mozilla

#endif // mozilla_ProcessHangMonitor_h