VsyncWorkerChild.h (1518B)
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_ipc_VsyncWorkerChild_h 8 #define mozilla_dom_ipc_VsyncWorkerChild_h 9 10 #include "mozilla/RefPtr.h" 11 #include "mozilla/dom/VsyncChild.h" 12 #include "nsISupportsImpl.h" 13 14 namespace mozilla::dom { 15 class DedicatedWorkerGlobalScope; 16 class IPCWorkerRef; 17 class WorkerPrivate; 18 19 // The PVsyncWorkerChild actor receives a vsync event from the main process and 20 // delivers it to the child process. This is specific for workers which wish to 21 // subscribe to vsync events to drive requestAnimationFrame callbacks. 22 class VsyncWorkerChild final : public VsyncChild { 23 NS_INLINE_DECL_REFCOUNTING(VsyncWorkerChild, override) 24 25 friend class PVsyncChild; 26 27 public: 28 VsyncWorkerChild(); 29 30 bool Initialize(WorkerPrivate* aWorkerPrivate); 31 32 void Destroy(); 33 34 void TryObserve(); 35 36 void TryUnobserve(); 37 38 private: 39 ~VsyncWorkerChild() override; 40 41 mozilla::ipc::IPCResult RecvNotify(const VsyncEvent& aVsync, 42 const float& aVsyncRate) override; 43 44 void ActorDestroy(ActorDestroyReason aActorDestroyReason) override; 45 46 RefPtr<IPCWorkerRef> mWorkerRef; 47 bool mObserving = false; 48 }; 49 50 } // namespace mozilla::dom 51 52 #endif // mozilla_dom_ipc_VsyncWorkerChild_h