tor-browser

The Tor Browser
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SharedWorkerService.h (2485B)

      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_SharedWorkerService_h
      8 #define mozilla_dom_SharedWorkerService_h
      9 
     10 #include "mozilla/dom/quota/CheckedUnsafePtr.h"
     11 #include "nsISupportsImpl.h"
     12 #include "nsTArray.h"
     13 
     14 class nsIEventTarget;
     15 
     16 namespace mozilla {
     17 
     18 namespace ipc {
     19 class PrincipalInfo;
     20 }
     21 
     22 namespace dom {
     23 
     24 class MessagePortIdentifier;
     25 class RemoteWorkerData;
     26 class SharedWorkerManager;
     27 class SharedWorkerParent;
     28 class UniqueMessagePortId;
     29 
     30 /**
     31 * PBackground service that creates and tracks the per-worker
     32 * SharedWorkerManager instances, allowing rendezvous between SharedWorkerParent
     33 * instances and the SharedWorkerManagers they want to talk to (1:1).
     34 */
     35 class SharedWorkerService final {
     36 public:
     37  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SharedWorkerService);
     38 
     39  // This can be called on PBackground thread only.
     40  static already_AddRefed<SharedWorkerService> GetOrCreate();
     41 
     42  // The service, if already created, is available on any thread using this
     43  // method.
     44  static SharedWorkerService* Get();
     45 
     46  // PBackground method only.
     47  void GetOrCreateWorkerManager(SharedWorkerParent* aActor,
     48                                const RemoteWorkerData& aData,
     49                                uint64_t aWindowID,
     50                                const MessagePortIdentifier& aPortIdentifier);
     51 
     52  void GetOrCreateWorkerManagerOnMainThread(
     53      nsIEventTarget* aBackgroundEventTarget, SharedWorkerParent* aActor,
     54      const RemoteWorkerData& aData, uint64_t aWindowID,
     55      UniqueMessagePortId& aPortIdentifier);
     56 
     57  void RemoveWorkerManagerOnMainThread(SharedWorkerManager* aManager);
     58 
     59 private:
     60  SharedWorkerService() = default;
     61  ~SharedWorkerService() = default;
     62 
     63  void ErrorPropagationOnMainThread(nsIEventTarget* aBackgroundEventTarget,
     64                                    SharedWorkerParent* aActor,
     65                                    nsresult aError);
     66 
     67  void MismatchOptionsErrorPropagationOnMainThread(
     68      nsIEventTarget* aBackgroundEventTarget, SharedWorkerParent* aActor);
     69 
     70  // Touched on main-thread only.
     71  nsTArray<RefPtr<SharedWorkerManager>> mWorkerManagers;
     72 };
     73 
     74 }  // namespace dom
     75 }  // namespace mozilla
     76 
     77 #endif  // mozilla_dom_SharedWorkerService_h