mirror of
https://github.com/classilla/tenfourfox.git
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202 lines
5.4 KiB
C++
202 lines
5.4 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "MainThreadUtils.h"
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#include "VsyncDispatcher.h"
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#include "VsyncSource.h"
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#include "gfxPlatform.h"
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#include "mozilla/layers/Compositor.h"
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#include "mozilla/layers/CompositorParent.h"
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#ifdef MOZ_ENABLE_PROFILER_SPS
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#include "GeckoProfiler.h"
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#include "ProfilerMarkers.h"
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#endif
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namespace mozilla {
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static bool sThreadAssertionsEnabled = true;
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void CompositorVsyncDispatcher::SetThreadAssertionsEnabled(bool aEnable)
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{
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// Should only be used in test environments
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MOZ_ASSERT(NS_IsMainThread());
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sThreadAssertionsEnabled = aEnable;
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}
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CompositorVsyncDispatcher::CompositorVsyncDispatcher()
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: mCompositorObserverLock("CompositorObserverLock")
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, mDidShutdown(false)
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{
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(NS_IsMainThread());
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}
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CompositorVsyncDispatcher::~CompositorVsyncDispatcher()
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{
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MOZ_ASSERT(XRE_IsParentProcess());
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// We auto remove this vsync dispatcher from the vsync source in the nsBaseWidget
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}
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void
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CompositorVsyncDispatcher::NotifyVsync(TimeStamp aVsyncTimestamp)
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{
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// In vsync thread
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#ifdef MOZ_ENABLE_PROFILER_SPS
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layers::CompositorParent::PostInsertVsyncProfilerMarker(aVsyncTimestamp);
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#endif
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MutexAutoLock lock(mCompositorObserverLock);
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if (mCompositorVsyncObserver) {
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mCompositorVsyncObserver->NotifyVsync(aVsyncTimestamp);
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}
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}
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void
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CompositorVsyncDispatcher::AssertOnCompositorThread()
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{
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if (!sThreadAssertionsEnabled) {
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return;
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}
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Compositor::AssertOnCompositorThread();
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}
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void
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CompositorVsyncDispatcher::ObserveVsync(bool aEnable)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(XRE_IsParentProcess());
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if (mDidShutdown) {
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return;
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}
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if (aEnable) {
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gfxPlatform::GetPlatform()->GetHardwareVsync()->AddCompositorVsyncDispatcher(this);
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} else {
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gfxPlatform::GetPlatform()->GetHardwareVsync()->RemoveCompositorVsyncDispatcher(this);
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}
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}
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void
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CompositorVsyncDispatcher::SetCompositorVsyncObserver(VsyncObserver* aVsyncObserver)
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{
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AssertOnCompositorThread();
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{ // scope lock
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MutexAutoLock lock(mCompositorObserverLock);
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mCompositorVsyncObserver = aVsyncObserver;
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}
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bool observeVsync = aVsyncObserver != nullptr;
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nsCOMPtr<nsIRunnable> vsyncControl = NS_NewRunnableMethodWithArg<bool>(this,
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&CompositorVsyncDispatcher::ObserveVsync,
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observeVsync);
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NS_DispatchToMainThread(vsyncControl);
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}
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void
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CompositorVsyncDispatcher::Shutdown()
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{
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// Need to explicitly remove CompositorVsyncDispatcher when the nsBaseWidget shuts down.
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// Otherwise, we would get dead vsync notifications between when the nsBaseWidget
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// shuts down and the CompositorParent shuts down.
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(NS_IsMainThread());
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ObserveVsync(false);
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mDidShutdown = true;
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{ // scope lock
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MutexAutoLock lock(mCompositorObserverLock);
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mCompositorVsyncObserver = nullptr;
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}
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}
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RefreshTimerVsyncDispatcher::RefreshTimerVsyncDispatcher()
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: mRefreshTimersLock("RefreshTimers lock")
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{
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(NS_IsMainThread());
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}
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RefreshTimerVsyncDispatcher::~RefreshTimerVsyncDispatcher()
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{
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(NS_IsMainThread());
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}
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void
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RefreshTimerVsyncDispatcher::NotifyVsync(TimeStamp aVsyncTimestamp)
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{
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MutexAutoLock lock(mRefreshTimersLock);
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for (size_t i = 0; i < mChildRefreshTimers.Length(); i++) {
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mChildRefreshTimers[i]->NotifyVsync(aVsyncTimestamp);
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}
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if (mParentRefreshTimer) {
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mParentRefreshTimer->NotifyVsync(aVsyncTimestamp);
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}
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}
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void
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RefreshTimerVsyncDispatcher::SetParentRefreshTimer(VsyncObserver* aVsyncObserver)
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{
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MOZ_ASSERT(NS_IsMainThread());
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{ // lock scope because UpdateVsyncStatus runs on main thread and will deadlock
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MutexAutoLock lock(mRefreshTimersLock);
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mParentRefreshTimer = aVsyncObserver;
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}
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UpdateVsyncStatus();
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}
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void
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RefreshTimerVsyncDispatcher::AddChildRefreshTimer(VsyncObserver* aVsyncObserver)
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{
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{ // scope lock - called on pbackground thread
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MutexAutoLock lock(mRefreshTimersLock);
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MOZ_ASSERT(aVsyncObserver);
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if (!mChildRefreshTimers.Contains(aVsyncObserver)) {
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mChildRefreshTimers.AppendElement(aVsyncObserver);
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}
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}
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UpdateVsyncStatus();
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}
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void
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RefreshTimerVsyncDispatcher::RemoveChildRefreshTimer(VsyncObserver* aVsyncObserver)
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{
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{ // scope lock - called on pbackground thread
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MutexAutoLock lock(mRefreshTimersLock);
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MOZ_ASSERT(aVsyncObserver);
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mChildRefreshTimers.RemoveElement(aVsyncObserver);
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}
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UpdateVsyncStatus();
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}
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void
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RefreshTimerVsyncDispatcher::UpdateVsyncStatus()
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{
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if (!NS_IsMainThread()) {
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nsCOMPtr<nsIRunnable> vsyncControl = NS_NewRunnableMethod(this,
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&RefreshTimerVsyncDispatcher::UpdateVsyncStatus);
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NS_DispatchToMainThread(vsyncControl);
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return;
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}
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gfx::VsyncSource::Display& display = gfxPlatform::GetPlatform()->GetHardwareVsync()->GetGlobalDisplay();
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display.NotifyRefreshTimerVsyncStatus(NeedsVsync());
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}
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bool
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RefreshTimerVsyncDispatcher::NeedsVsync()
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{
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MOZ_ASSERT(NS_IsMainThread());
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MutexAutoLock lock(mRefreshTimersLock);
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return (mParentRefreshTimer != nullptr) || !mChildRefreshTimers.IsEmpty();
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}
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} // namespace mozilla
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