dom/workers/WorkerDebuggerManager.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_dom_workers_workerdebuggermanager_h
   8 #define mozilla_dom_workers_workerdebuggermanager_h
   9
  10 #include "MainThreadUtils.h"
  11 #include "mozilla/AlreadyAddRefed.h"
  12 #include "mozilla/Mutex.h"
  13 #include "nsCOMPtr.h"
  14 #include "nsDebug.h"
  15 #include "nsIObserver.h"
  16 #include "nsISupports.h"
  17 #include "nsIWorkerDebuggerManager.h"
  18 #include "nsTArray.h"
  19
  20 #define WORKERDEBUGGERMANAGER_CID                    \
  21   {                                                  \
  22     0x62ec8731, 0x55ad, 0x4246, {                    \
  23       0xb2, 0xea, 0xf2, 0x6c, 0x1f, 0xe1, 0x9d, 0x2d \
  24     }                                                \
  25   }
  26 #define WORKERDEBUGGERMANAGER_CONTRACTID \
  27   "@mozilla.org/dom/workers/workerdebuggermanager;1"
  28
  29 namespace mozilla {
  30 namespace dom {
  31
  32 class WorkerDebugger;
  33 class WorkerPrivate;
  34
  35 class WorkerDebuggerManager final : public nsIObserver,
  36                                     public nsIWorkerDebuggerManager {
  37   Mutex mMutex;
  38
  39   // Protected by mMutex.
  40   nsTArray<nsCOMPtr<nsIWorkerDebuggerManagerListener>> mListeners;
  41
  42   // Only touched on the main thread.
  43   nsTArray<RefPtr<WorkerDebugger>> mDebuggers;
  44
  45  public:
  46   static already_AddRefed<WorkerDebuggerManager> GetInstance();
  47
  48   static WorkerDebuggerManager* GetOrCreate();
  49
  50   static WorkerDebuggerManager* Get();
  51
  52   WorkerDebuggerManager();
  53
  54   NS_DECL_ISUPPORTS
  55   NS_DECL_NSIOBSERVER
  56   NS_DECL_NSIWORKERDEBUGGERMANAGER
  57
  58   nsresult Init();
  59
  60   void Shutdown();
  61
  62   void RegisterDebugger(WorkerPrivate* aWorkerPrivate);
  63
  64   void RegisterDebuggerMainThread(WorkerPrivate* aWorkerPrivate,
  65                                   bool aNotifyListeners);
  66
  67   void UnregisterDebugger(WorkerPrivate* aWorkerPrivate);
  68
  69   void UnregisterDebuggerMainThread(WorkerPrivate* aWorkerPrivate);
  70
  71   uint32_t GetDebuggersLength() const;
  72
  73   WorkerDebugger* GetDebuggerAt(uint32_t aIndex) const;
  74
  75  private:
  76   nsTArray<nsCOMPtr<nsIWorkerDebuggerManagerListener>> CloneListeners();
  77
  78   virtual ~WorkerDebuggerManager();
  79 };
  80
  81 inline nsresult RegisterWorkerDebugger(WorkerPrivate* aWorkerPrivate) {
  82   WorkerDebuggerManager* manager;
  83
  84   if (NS_IsMainThread()) {
  85     manager = WorkerDebuggerManager::GetOrCreate();
  86     if (!manager) {
  87       NS_WARNING("Failed to create worker debugger manager!");
  88       return NS_ERROR_FAILURE;
  89     }
  90   } else {
  91     manager = WorkerDebuggerManager::Get();
  92   }
  93
  94   manager->RegisterDebugger(aWorkerPrivate);
  95   return NS_OK;
  96 }
  97
  98 inline nsresult UnregisterWorkerDebugger(WorkerPrivate* aWorkerPrivate) {
  99   WorkerDebuggerManager* manager;
 100
 101   if (NS_IsMainThread()) {
 102     manager = WorkerDebuggerManager::GetOrCreate();
 103     if (!manager) {
 104       NS_WARNING("Failed to create worker debugger manager!");
 105       return NS_ERROR_FAILURE;
 106     }
 107   } else {
 108     manager = WorkerDebuggerManager::Get();
 109   }
 110
 111   manager->UnregisterDebugger(aWorkerPrivate);
 112   return NS_OK;
 113 }
 114
 115 }  // namespace dom
 116 }  // namespace mozilla
 117
 118 #endif  // mozilla_dom_workers_workerdebuggermanager_h