tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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VsyncBridgeParent.cpp (2267B)

      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