зеркало из https://github.com/mozilla/gecko-dev.git
119 строки
2.5 KiB
C++
119 строки
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "VsyncChild.h"
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#include "mozilla/SchedulerGroup.h"
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#include "mozilla/VsyncDispatcher.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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namespace layout {
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VsyncChild::VsyncChild()
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: mObservingVsync(false)
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, mIsShutdown(false)
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, mVsyncRate(TimeDuration::Forever())
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{
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MOZ_ASSERT(NS_IsMainThread());
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}
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VsyncChild::~VsyncChild()
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{
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MOZ_ASSERT(NS_IsMainThread());
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}
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bool
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VsyncChild::SendObserve()
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (!mObservingVsync && !mIsShutdown) {
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mObservingVsync = true;
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PVsyncChild::SendObserve();
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}
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return true;
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}
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bool
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VsyncChild::SendUnobserve()
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (mObservingVsync && !mIsShutdown) {
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mObservingVsync = false;
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PVsyncChild::SendUnobserve();
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}
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return true;
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}
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void
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VsyncChild::ActorDestroy(ActorDestroyReason aActorDestroyReason)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(!mIsShutdown);
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mIsShutdown = true;
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mObserver = nullptr;
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if (recordreplay::IsRecordingOrReplaying()) {
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recordreplay::child::SetVsyncObserver(nullptr);
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}
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}
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mozilla::ipc::IPCResult
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VsyncChild::RecvNotify(const TimeStamp& aVsyncTimestamp)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(!mIsShutdown);
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// Ignore Vsync messages sent to a recording/replaying process. Vsyncs are
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// triggered at the top of the main thread's event loop instead.
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if (recordreplay::IsRecordingOrReplaying()) {
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return IPC_OK();
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}
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SchedulerGroup::MarkVsyncRan();
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if (mObservingVsync && mObserver) {
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mObserver->NotifyVsync(aVsyncTimestamp);
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}
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return IPC_OK();
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}
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void
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VsyncChild::SetVsyncObserver(VsyncObserver* aVsyncObserver)
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{
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MOZ_ASSERT(NS_IsMainThread());
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mObserver = aVsyncObserver;
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if (recordreplay::IsRecordingOrReplaying()) {
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recordreplay::child::SetVsyncObserver(mObserver);
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}
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}
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TimeDuration
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VsyncChild::GetVsyncRate()
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{
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if (mVsyncRate == TimeDuration::Forever()) {
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PVsyncChild::SendRequestVsyncRate();
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}
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return mVsyncRate;
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}
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TimeDuration
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VsyncChild::VsyncRate()
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{
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return mVsyncRate;
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}
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mozilla::ipc::IPCResult
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VsyncChild::RecvVsyncRate(const float& aVsyncRate)
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{
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mVsyncRate = TimeDuration::FromMilliseconds(aVsyncRate);
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return IPC_OK();
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}
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} // namespace layout
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} // namespace mozilla
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