Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef mozilla_ProcessHangMonitor_h
       8             : #define mozilla_ProcessHangMonitor_h
       9             : 
      10             : #include "mozilla/AlreadyAddRefed.h"
      11             : #include "mozilla/Atomics.h"
      12             : #include "nsCOMPtr.h"
      13             : #include "nsIObserver.h"
      14             : 
      15             : class nsIRunnable;
      16             : class nsITabChild;
      17             : class nsIThread;
      18             : 
      19             : namespace mozilla {
      20             : 
      21             : namespace dom {
      22             : class ContentParent;
      23             : class TabParent;
      24             : } // namespace dom
      25             : 
      26             : class PProcessHangMonitorParent;
      27             : 
      28             : class ProcessHangMonitor final
      29             :   : public nsIObserver
      30             : {
      31             :  private:
      32             :   ProcessHangMonitor();
      33             :   virtual ~ProcessHangMonitor();
      34             : 
      35             :  public:
      36           0 :   static ProcessHangMonitor* Get() { return sInstance; }
      37             :   static ProcessHangMonitor* GetOrCreate();
      38             : 
      39             :   NS_DECL_ISUPPORTS
      40             :   NS_DECL_NSIOBSERVER
      41             : 
      42             :   static PProcessHangMonitorParent* AddProcess(dom::ContentParent* aContentParent);
      43             :   static void RemoveProcess(PProcessHangMonitorParent* aParent);
      44             : 
      45             :   static void ClearHang();
      46             : 
      47             :   static void ForcePaint(PProcessHangMonitorParent* aParent,
      48             :                          dom::TabParent* aTab,
      49             :                          uint64_t aLayerObserverEpoch);
      50             :   static void ClearForcePaint();
      51             : 
      52             :   enum SlowScriptAction {
      53             :     Continue,
      54             :     Terminate,
      55             :     StartDebugger
      56             :   };
      57             :   SlowScriptAction NotifySlowScript(nsITabChild* aTabChild,
      58             :                                     const char* aFileName);
      59             : 
      60             :   void NotifyPluginHang(uint32_t aPluginId);
      61             : 
      62             :   bool IsDebuggerStartupComplete();
      63             : 
      64             :   void InitiateCPOWTimeout();
      65             :   bool ShouldTimeOutCPOWs();
      66             : 
      67             :   void Dispatch(already_AddRefed<nsIRunnable> aRunnable);
      68             :   bool IsOnThread();
      69             : 
      70             :  private:
      71             :   static ProcessHangMonitor* sInstance;
      72             : 
      73             :   Atomic<bool> mCPOWTimeout;
      74             : 
      75             :   nsCOMPtr<nsIThread> mThread;
      76             : };
      77             : 
      78             : } // namespace mozilla
      79             : 
      80             : #endif // mozilla_ProcessHangMonitor_h