Quelle WorkerDebuggerManager.h Sprache: C

/* -*- 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_dom_workers_workerdebuggermanager_h
#define mozilla_dom_workers_workerdebuggermanager_h

#include "MainThreadUtils.h"
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/Mutex.h"
#include "nsCOMPtr.h"
#include "nsDebug.h"
#include "nsIObserver.h"
#include "nsISupports.h"
#include "nsIWorkerDebuggerManager.h"
#include "nsTArray.h"

#define WORKERDEBUGGERMANAGER_CID                    \
  {                                                  \
    0x62ec8731, 0x55ad, 0x4246, {                    \
      0xb2, 0xea, 0xf2, 0x6c, 0x1f, 0xe1, 0x9d, 0x2d \
    }                                                \
  }
#define WORKERDEBUGGERMANAGER_CONTRACTID \
  "@mozilla.org/dom/workers/workerdebuggermanager;1"

namespace mozilla::dom {

class WorkerDebugger;
class WorkerPrivate;

class WorkerDebuggerManager final : public nsIObserver,
                                    public nsIWorkerDebuggerManager {
  Mutex mMutex MOZ_UNANNOTATED;

  // Protected by mMutex.
  nsTArray<nsCOMPtr<nsIWorkerDebuggerManagerListener>> mListeners;

  // Only touched on the main thread.
  nsTArray<RefPtr<WorkerDebugger>> mDebuggers;

public:
  static already_AddRefed<WorkerDebuggerManager> GetInstance();

  static WorkerDebuggerManager* GetOrCreate();

  static WorkerDebuggerManager* Get();

  WorkerDebuggerManager();

  NS_DECL_ISUPPORTS
  NS_DECL_NSIOBSERVER
  NS_DECL_NSIWORKERDEBUGGERMANAGER

  nsresult Init();

  void Shutdown();

  void RegisterDebugger(WorkerPrivate* aWorkerPrivate);

  void RegisterDebuggerMainThread(WorkerPrivate* aWorkerPrivate,
                                  bool aNotifyListeners);

  void UnregisterDebugger(WorkerPrivate* aWorkerPrivate);

  void UnregisterDebuggerMainThread(WorkerPrivate* aWorkerPrivate);

  uint32_t GetDebuggersLength() const;

  WorkerDebugger* GetDebuggerAt(uint32_t aIndex) const;

private:
  nsTArray<nsCOMPtr<nsIWorkerDebuggerManagerListener>> CloneListeners();

  virtual ~WorkerDebuggerManager();
};

inline nsresult RegisterWorkerDebugger(WorkerPrivate* aWorkerPrivate) {
  WorkerDebuggerManager* manager;

  if (NS_IsMainThread()) {
    manager = WorkerDebuggerManager::GetOrCreate();
    if (!manager) {
      NS_WARNING("Failed to create worker debugger manager!");
      return NS_ERROR_FAILURE;
    }
  } else {
    manager = WorkerDebuggerManager::Get();
  }

  manager->RegisterDebugger(aWorkerPrivate);
  return NS_OK;
}

inline nsresult UnregisterWorkerDebugger(WorkerPrivate* aWorkerPrivate) {
  WorkerDebuggerManager* manager;

  if (NS_IsMainThread()) {
    manager = WorkerDebuggerManager::GetOrCreate();
    if (!manager) {
      NS_WARNING("Failed to create worker debugger manager!");
      return NS_ERROR_FAILURE;
    }
  } else {
    manager = WorkerDebuggerManager::Get();
  }

  manager->UnregisterDebugger(aWorkerPrivate);
  return NS_OK;
}

}  // namespace mozilla::dom

#endif  // mozilla_dom_workers_workerdebuggermanager_h

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