dom/ipc/ProcessHangMonitor.h

   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 #include "nsIRemoteTab.h"
  15 #include "nsIThread.h"
  16 #include "nsStringFwd.h"
  17
  18 class nsIRunnable;
  19 class nsIBrowserChild;
  20 class nsIThread;
  21
  22 namespace mozilla {
  23
  24 namespace dom {
  25 class ContentParent;
  26 class BrowserParent;
  27 struct CancelContentJSOptions;
  28 }  // namespace dom
  29
  30 class PProcessHangMonitorParent;
  31
  32 class ProcessHangMonitor final : public nsIObserver {
  33  private:
  34   ProcessHangMonitor();
  35   virtual ~ProcessHangMonitor();
  36
  37  public:
  38   static ProcessHangMonitor* Get() { return sInstance; }
  39   static ProcessHangMonitor* GetOrCreate();
  40
  41   NS_DECL_ISUPPORTS
  42   NS_DECL_NSIOBSERVER
  43
  44   static already_AddRefed<PProcessHangMonitorParent> AddProcess(
  45       dom::ContentParent* aContentParent);
  46   static void RemoveProcess(PProcessHangMonitorParent* aParent);
  47
  48   static void ClearHang();
  49
  50   static void PaintWhileInterruptingJS(PProcessHangMonitorParent* aParent,
  51                                        dom::BrowserParent* aTab);
  52
  53   static void UnloadLayersWhileInterruptingJS(
  54       PProcessHangMonitorParent* aParent, dom::BrowserParent* aTab);
  55
  56   static void ClearPaintWhileInterruptingJS();
  57   static void MaybeStartPaintWhileInterruptingJS();
  58
  59   static void CancelContentJSExecutionIfRunning(
  60       PProcessHangMonitorParent* aParent, dom::BrowserParent* aTab,
  61       nsIRemoteTab::NavigationType aNavigationType,
  62       const dom::CancelContentJSOptions& aCancelContentJSOptions);
  63
  64   static void SetMainThreadQoSPriority(PProcessHangMonitorParent* aParent,
  65                                        nsIThread::QoSPriority aQoSPriority);
  66
  67   enum SlowScriptAction {
  68     Continue,
  69     Terminate,
  70     StartDebugger,
  71   };
  72   SlowScriptAction NotifySlowScript(nsIBrowserChild* aBrowserChild,
  73                                     const char* aFileName,
  74                                     const nsString& aAddonId,
  75                                     const double aDuration);
  76
  77   void NotifyPluginHang(uint32_t aPluginId);
  78
  79   bool IsDebuggerStartupComplete();
  80
  81   void InitiateCPOWTimeout();
  82   bool ShouldTimeOutCPOWs();
  83
  84   nsresult Dispatch(already_AddRefed<nsIRunnable> aRunnable);
  85   bool IsOnThread();
  86
  87  private:
  88   static ProcessHangMonitor* sInstance;
  89
  90   Atomic<bool> mCPOWTimeout;
  91
  92   nsCOMPtr<nsIThread> mThread;
  93 };
  94
  95 }  // namespace mozilla
  96
  97 #endif  // mozilla_ProcessHangMonitor_h