/* 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_ipc_VsyncParent_h
#define mozilla_dom_ipc_VsyncParent_h
#include "mozilla/RefPtr.h"
#include "mozilla/VsyncDispatcher.h"
#include "mozilla/dom/PVsyncParent.h"
#include "nsCOMPtr.h"
#include "nsIThread.h"
namespace mozilla::dom {
// Use PBackground thread in the main process to send vsync notifications to
// content process. This actor will be released when its parent protocol calls
// DeallocPVsyncParent().
class VsyncParent final :
public PVsyncParent,
public VsyncObserver {
friend class PVsyncParent;
NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_DELETE_ON_EVENT_TARGET(
VsyncParent, mInitialThread, override)
public:
VsyncParent();
void UpdateVsyncDispatcher(
const RefPtr<VsyncDispatcher>& aVsyncDispatcher);
private:
virtual ~VsyncParent() =
default;
void NotifyVsync(
const VsyncEvent& aVsync) override;
virtual void ActorDestroy(ActorDestroyReason aActorDestroyReason) override;
mozilla::ipc::IPCResult RecvObserve();
mozilla::ipc::IPCResult RecvUnobserve();
void DispatchVsyncEvent(
const VsyncEvent& aVsync);
void UpdateVsyncRate();
bool IsOnInitialThread();
void AssertIsOnInitialThread();
bool mObservingVsync;
bool mDestroyed;
nsCOMPtr<nsIThread> mInitialThread;
RefPtr<VsyncDispatcher> mVsyncDispatcher;
};
}
// namespace mozilla::dom
#endif // mozilla_dom_ipc_VsyncParent_h