gfx/ipc/CompositorWidgetVsyncObserver.cpp

   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 #include "CompositorWidgetVsyncObserver.h"
   8 #include "mozilla/gfx/VsyncBridgeChild.h"
   9
  10 namespace mozilla {
  11 namespace widget {
  12
  13 CompositorWidgetVsyncObserver::CompositorWidgetVsyncObserver(
  14     RefPtr<VsyncBridgeChild> aVsyncBridge,
  15     const layers::LayersId& aRootLayerTreeId)
  16     : mVsyncBridge(aVsyncBridge), mRootLayerTreeId(aRootLayerTreeId) {
  17   MOZ_ASSERT(XRE_IsParentProcess());
  18   MOZ_ASSERT(NS_IsMainThread());
  19 }
  20
  21 CompositorWidgetVsyncObserver::~CompositorWidgetVsyncObserver() = default;
  22
  23 void CompositorWidgetVsyncObserver::NotifyVsync(const VsyncEvent& aVsync) {
  24   // Vsync notifications should only arrive on the vsync thread.
  25   MOZ_ASSERT(XRE_IsParentProcess());
  26   MOZ_ASSERT(!NS_IsMainThread());
  27
  28   mVsyncBridge->NotifyVsync(aVsync, mRootLayerTreeId);
  29 }
  30
  31 }  // namespace widget
  32 }  // namespace mozilla