gfx/ipc/VsyncBridgeParent.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 #include "VsyncBridgeParent.h"
   7 #include "mozilla/ipc/Endpoint.h"
   8 #include "mozilla/layers/CompositorBridgeParent.h"
   9 #include "mozilla/layers/CompositorThread.h"
  10
  11 using mozilla::layers::CompositorBridgeParent;
  12 using mozilla::layers::CompositorThreadHolder;
  13
  14 namespace mozilla {
  15 namespace gfx {
  16
  17 RefPtr<VsyncBridgeParent> VsyncBridgeParent::Start(
  18     Endpoint<PVsyncBridgeParent>&& aEndpoint) {
  19   RefPtr<VsyncBridgeParent> parent = new VsyncBridgeParent();
  20
  21   RefPtr<Runnable> task = NewRunnableMethod<Endpoint<PVsyncBridgeParent>&&>(
  22       "gfx::VsyncBridgeParent::Open", parent, &VsyncBridgeParent::Open,
  23       std::move(aEndpoint));
  24   layers::CompositorThread()->Dispatch(task.forget());
  25
  26   return parent;
  27 }
  28
  29 VsyncBridgeParent::VsyncBridgeParent() : mOpen(false) {
  30   MOZ_COUNT_CTOR(VsyncBridgeParent);
  31   mCompositorThreadRef = CompositorThreadHolder::GetSingleton();
  32 }
  33
  34 VsyncBridgeParent::~VsyncBridgeParent() { MOZ_COUNT_DTOR(VsyncBridgeParent); }
  35
  36 void VsyncBridgeParent::Open(Endpoint<PVsyncBridgeParent>&& aEndpoint) {
  37   if (!aEndpoint.Bind(this)) {
  38     // We can't recover from this.
  39     MOZ_CRASH("Failed to bind VsyncBridgeParent to endpoint");
  40   }
  41   mOpen = true;
  42 }
  43
  44 mozilla::ipc::IPCResult VsyncBridgeParent::RecvNotifyVsync(
  45     const VsyncEvent& aVsync, const LayersId& aLayersId) {
  46   CompositorBridgeParent::NotifyVsync(aVsync, aLayersId);
  47   return IPC_OK();
  48 }
  49
  50 void VsyncBridgeParent::Shutdown() {
  51   if (!CompositorThreadHolder::IsInCompositorThread()) {
  52     layers::CompositorThread()->Dispatch(
  53         NewRunnableMethod("gfx::VsyncBridgeParent::ShutdownImpl", this,
  54                           &VsyncBridgeParent::ShutdownImpl));
  55     return;
  56   }
  57
  58   ShutdownImpl();
  59 }
  60
  61 void VsyncBridgeParent::ShutdownImpl() {
  62   if (mOpen) {
  63     Close();
  64     mOpen = false;
  65   }
  66 }
  67
  68 void VsyncBridgeParent::ActorDestroy(ActorDestroyReason aWhy) {
  69   mOpen = false;
  70   mCompositorThreadRef = nullptr;
  71 }
  72
  73 }  // namespace gfx
  74 }  // namespace mozilla