зеркало из https://github.com/mozilla/gecko-dev.git
479 строки
16 KiB
C++
479 строки
16 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set sw=4 ts=8 et 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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#ifndef mozilla_layers_CompositorParent_h
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#define mozilla_layers_CompositorParent_h
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// Enable this pref to turn on compositor performance warning.
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// This will print warnings if the compositor isn't meeting
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// its responsiveness objectives:
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// 1) Compose a frame within 15ms of receiving a ScheduleCompositeCall
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// 2) Unless a frame was composited within the throttle threshold in
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// which the deadline will be 15ms + throttle threshold
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//#define COMPOSITOR_PERFORMANCE_WARNING
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#include <stdint.h> // for uint64_t
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#include "Layers.h" // for Layer
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#include "base/basictypes.h" // for DISALLOW_EVIL_CONSTRUCTORS
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#include "base/platform_thread.h" // for PlatformThreadId
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#include "base/thread.h" // for Thread
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#include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2
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#include "mozilla/Attributes.h" // for override
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#include "mozilla/Monitor.h" // for Monitor
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#include "mozilla/RefPtr.h" // for RefPtr
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#include "mozilla/TimeStamp.h" // for TimeStamp
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#include "mozilla/gfx/Point.h" // for IntSize
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#include "mozilla/ipc/ProtocolUtils.h"
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#include "mozilla/layers/GeckoContentController.h"
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#include "mozilla/layers/LayersMessages.h" // for TargetConfig
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#include "mozilla/layers/PCompositorParent.h"
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#include "mozilla/layers/ShadowLayersManager.h" // for ShadowLayersManager
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#include "mozilla/layers/APZTestData.h"
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#include "nsAutoPtr.h" // for nsRefPtr
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#include "nsISupportsImpl.h"
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#include "ThreadSafeRefcountingWithMainThreadDestruction.h"
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#include "mozilla/VsyncDispatcher.h"
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class CancelableTask;
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class MessageLoop;
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class nsIWidget;
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namespace mozilla {
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namespace gfx {
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class DrawTarget;
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} // namespace gfx
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namespace layers {
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class APZCTreeManager;
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class AsyncCompositionManager;
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class Compositor;
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class CompositorParent;
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class LayerManagerComposite;
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class LayerTransactionParent;
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struct ScopedLayerTreeRegistration
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{
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ScopedLayerTreeRegistration(uint64_t aLayersId,
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Layer* aRoot,
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GeckoContentController* aController);
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~ScopedLayerTreeRegistration();
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private:
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uint64_t mLayersId;
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};
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class CompositorThreadHolder final
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{
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_MAIN_THREAD_DESTRUCTION(CompositorThreadHolder)
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public:
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CompositorThreadHolder();
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base::Thread* GetCompositorThread() const {
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return mCompositorThread;
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}
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private:
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~CompositorThreadHolder();
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base::Thread* const mCompositorThread;
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static base::Thread* CreateCompositorThread();
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static void DestroyCompositorThread(base::Thread* aCompositorThread);
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friend class CompositorParent;
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};
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/**
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* Manages the vsync (de)registration and tracking on behalf of the
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* compositor when it need to paint.
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* Turns vsync notifications into scheduled composites.
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**/
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class CompositorVsyncScheduler
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{
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CompositorVsyncScheduler)
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public:
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explicit CompositorVsyncScheduler(CompositorParent* aCompositorParent, nsIWidget* aWidget);
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bool NotifyVsync(TimeStamp aVsyncTimestamp);
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void SetNeedsComposite(bool aSchedule);
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void OnForceComposeToTarget();
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void ScheduleTask(CancelableTask*, int);
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void ResumeComposition();
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void ComposeToTarget(gfx::DrawTarget* aTarget, const gfx::IntRect* aRect = nullptr);
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void PostCompositeTask(TimeStamp aCompositeTimestamp);
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void Destroy();
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void ScheduleComposition();
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void CancelCurrentCompositeTask();
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bool NeedsComposite();
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void Composite(TimeStamp aVsyncTimestamp);
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void ForceComposeToTarget(gfx::DrawTarget* aTarget, const gfx::IntRect* aRect);
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const TimeStamp& GetLastComposeTime()
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{
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return mLastCompose;
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}
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#ifdef COMPOSITOR_PERFORMANCE_WARNING
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const TimeStamp& GetExpectedComposeStartTime()
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{
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return mExpectedComposeStartTime;
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}
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#endif
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private:
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virtual ~CompositorVsyncScheduler();
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void NotifyCompositeTaskExecuted();
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void ObserveVsync();
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void UnobserveVsync();
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void DispatchTouchEvents(TimeStamp aVsyncTimestamp);
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void CancelCurrentSetNeedsCompositeTask();
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class Observer final : public VsyncObserver
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{
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public:
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explicit Observer(CompositorVsyncScheduler* aOwner);
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virtual bool NotifyVsync(TimeStamp aVsyncTimestamp) override;
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void Destroy();
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private:
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virtual ~Observer();
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Mutex mMutex;
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// Hold raw pointer to avoid mutual reference.
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CompositorVsyncScheduler* mOwner;
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};
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CompositorParent* mCompositorParent;
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TimeStamp mLastCompose;
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CancelableTask* mCurrentCompositeTask;
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#ifdef COMPOSITOR_PERFORMANCE_WARNING
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TimeStamp mExpectedComposeStartTime;
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#endif
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bool mAsapScheduling;
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bool mNeedsComposite;
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bool mIsObservingVsync;
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int32_t mVsyncNotificationsSkipped;
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nsRefPtr<CompositorVsyncDispatcher> mCompositorVsyncDispatcher;
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nsRefPtr<CompositorVsyncScheduler::Observer> mVsyncObserver;
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mozilla::Monitor mCurrentCompositeTaskMonitor;
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mozilla::Monitor mSetNeedsCompositeMonitor;
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CancelableTask* mSetNeedsCompositeTask;
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};
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class CompositorUpdateObserver
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{
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CompositorUpdateObserver);
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virtual void ObserveUpdate(uint64_t aLayersId, bool aActive) = 0;
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protected:
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virtual ~CompositorUpdateObserver() {}
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};
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class CompositorParent final : public PCompositorParent,
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public ShadowLayersManager
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{
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_MAIN_THREAD_DESTRUCTION(CompositorParent)
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friend class CompositorVsyncScheduler;
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public:
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explicit CompositorParent(nsIWidget* aWidget,
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bool aUseExternalSurfaceSize = false,
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int aSurfaceWidth = -1, int aSurfaceHeight = -1);
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// IToplevelProtocol::CloneToplevel()
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virtual IToplevelProtocol*
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CloneToplevel(const InfallibleTArray<mozilla::ipc::ProtocolFdMapping>& aFds,
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base::ProcessHandle aPeerProcess,
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mozilla::ipc::ProtocolCloneContext* aCtx) override;
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virtual bool RecvGetFrameUniformity(FrameUniformityData* aOutData) override;
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virtual bool RecvRequestOverfill() override;
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virtual bool RecvWillStop() override;
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virtual bool RecvStop() override;
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virtual bool RecvPause() override;
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virtual bool RecvResume() override;
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virtual bool RecvNotifyHidden(const uint64_t& id) override { return true; }
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virtual bool RecvNotifyVisible(const uint64_t& id) override { return true; }
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virtual bool RecvNotifyChildCreated(const uint64_t& child) override;
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virtual bool RecvAdoptChild(const uint64_t& child) override;
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virtual bool RecvMakeSnapshot(const SurfaceDescriptor& aInSnapshot,
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const gfx::IntRect& aRect) override;
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virtual bool RecvMakeWidgetSnapshot(const SurfaceDescriptor& aInSnapshot) override;
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virtual bool RecvFlushRendering() override;
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virtual bool RecvGetTileSize(int32_t* aWidth, int32_t* aHeight) override;
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virtual bool RecvNotifyRegionInvalidated(const nsIntRegion& aRegion) override;
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virtual bool RecvStartFrameTimeRecording(const int32_t& aBufferSize, uint32_t* aOutStartIndex) override;
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virtual bool RecvStopFrameTimeRecording(const uint32_t& aStartIndex, InfallibleTArray<float>* intervals) override;
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// Unused for chrome <-> compositor communication (which this class does).
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// @see CrossProcessCompositorParent::RecvRequestNotifyAfterRemotePaint
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virtual bool RecvRequestNotifyAfterRemotePaint() override { return true; };
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virtual void ActorDestroy(ActorDestroyReason why) override;
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virtual void ShadowLayersUpdated(LayerTransactionParent* aLayerTree,
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const uint64_t& aTransactionId,
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const TargetConfig& aTargetConfig,
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const InfallibleTArray<PluginWindowData>& aPlugins,
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bool aIsFirstPaint,
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bool aScheduleComposite,
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uint32_t aPaintSequenceNumber,
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bool aIsRepeatTransaction,
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int32_t aPaintSyncId) override;
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virtual void ForceComposite(LayerTransactionParent* aLayerTree) override;
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virtual bool SetTestSampleTime(LayerTransactionParent* aLayerTree,
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const TimeStamp& aTime) override;
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virtual void LeaveTestMode(LayerTransactionParent* aLayerTree) override;
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virtual void ApplyAsyncProperties(LayerTransactionParent* aLayerTree)
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override;
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virtual void FlushApzRepaints(const LayerTransactionParent* aLayerTree) override;
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virtual void GetAPZTestData(const LayerTransactionParent* aLayerTree,
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APZTestData* aOutData) override;
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virtual void SetConfirmedTargetAPZC(const LayerTransactionParent* aLayerTree,
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const uint64_t& aInputBlockId,
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const nsTArray<ScrollableLayerGuid>& aTargets) override;
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virtual AsyncCompositionManager* GetCompositionManager(LayerTransactionParent* aLayerTree) override { return mCompositionManager; }
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/**
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* This forces the is-first-paint flag to true. This is intended to
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* be called by the widget code when it loses its viewport information
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* (or for whatever reason wants to refresh the viewport information).
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* The information refresh happens because the compositor will call
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* SetFirstPaintViewport on the next frame of composition.
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*/
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void ForceIsFirstPaint();
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void Destroy();
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static void SetShadowProperties(Layer* aLayer);
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void NotifyChildCreated(const uint64_t& aChild);
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void AsyncRender();
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// Can be called from any thread
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void ScheduleRenderOnCompositorThread();
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void SchedulePauseOnCompositorThread();
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void InvalidateOnCompositorThread();
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/**
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* Returns true if a surface was obtained and the resume succeeded; false
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* otherwise.
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*/
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bool ScheduleResumeOnCompositorThread();
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bool ScheduleResumeOnCompositorThread(int width, int height);
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virtual void ScheduleComposition();
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void NotifyShadowTreeTransaction(uint64_t aId, bool aIsFirstPaint,
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bool aScheduleComposite, uint32_t aPaintSequenceNumber,
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bool aIsRepeatTransaction);
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/**
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* Check rotation info and schedule a rendering task if needed.
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* Only can be called from compositor thread.
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*/
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void ScheduleRotationOnCompositorThread(const TargetConfig& aTargetConfig, bool aIsFirstPaint);
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/**
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* Returns the unique layer tree identifier that corresponds to the root
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* tree of this compositor.
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*/
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uint64_t RootLayerTreeId();
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/**
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* Returns a pointer to the compositor corresponding to the given ID.
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*/
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static CompositorParent* GetCompositor(uint64_t id);
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/**
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* Returns the compositor thread's message loop.
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*
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* This message loop is used by CompositorParent and ImageBridgeParent.
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*/
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static MessageLoop* CompositorLoop();
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/**
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* Creates the compositor thread and the global compositor map.
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*/
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static void StartUp();
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/**
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* Waits for all [CrossProcess]CompositorParent's to be gone,
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* and destroys the compositor thread and global compositor map.
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*
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* Does not return until all of that has completed.
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*/
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static void ShutDown();
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/**
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* Allocate an ID that can be used to refer to a layer tree and
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* associated resources that live only on the compositor thread.
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*
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* Must run on the content main thread.
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*/
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static uint64_t AllocateLayerTreeId();
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/**
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* Release compositor-thread resources referred to by |aID|.
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*
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* Must run on the content main thread.
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*/
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static void DeallocateLayerTreeId(uint64_t aId);
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/**
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* Set aController as the pan/zoom callback for the subtree referred
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* to by aLayersId.
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*
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* Must run on content main thread.
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*/
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static void SetControllerForLayerTree(uint64_t aLayersId,
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GeckoContentController* aController);
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/**
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* This returns a reference to the APZCTreeManager to which
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* pan/zoom-related events can be sent.
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*/
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static APZCTreeManager* GetAPZCTreeManager(uint64_t aLayersId);
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/**
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* A new child process has been configured to push transactions
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* directly to us. Transport is to its thread context.
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*/
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static PCompositorParent*
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Create(Transport* aTransport, ProcessId aOtherProcess);
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struct LayerTreeState {
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LayerTreeState();
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~LayerTreeState();
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nsRefPtr<Layer> mRoot;
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nsRefPtr<GeckoContentController> mController;
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CompositorParent* mParent;
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LayerManagerComposite* mLayerManager;
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// Pointer to the CrossProcessCompositorParent. Used by APZCs to share
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// their FrameMetrics with the corresponding child process that holds
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// the PCompositorChild
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PCompositorParent* mCrossProcessParent;
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TargetConfig mTargetConfig;
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APZTestData mApzTestData;
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LayerTransactionParent* mLayerTree;
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nsTArray<PluginWindowData> mPluginData;
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bool mUpdatedPluginDataAvailable;
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nsRefPtr<CompositorUpdateObserver> mLayerTreeReadyObserver;
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nsRefPtr<CompositorUpdateObserver> mLayerTreeClearedObserver;
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};
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/**
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* Lookup the indirect shadow tree for |aId| and return it if it
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* exists. Otherwise null is returned. This must only be called on
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* the compositor thread.
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*/
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static LayerTreeState* GetIndirectShadowTree(uint64_t aId);
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/**
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* Used by the profiler to denote when a vsync occured
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*/
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static void PostInsertVsyncProfilerMarker(mozilla::TimeStamp aVsyncTimestamp);
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static void RequestNotifyLayerTreeReady(uint64_t aLayersId, CompositorUpdateObserver* aObserver);
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static void RequestNotifyLayerTreeCleared(uint64_t aLayersId, CompositorUpdateObserver* aObserver);
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static void SwapLayerTreeObservers(uint64_t aLayer, uint64_t aOtherLayer);
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float ComputeRenderIntegrity();
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/**
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* Returns true if the calling thread is the compositor thread.
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*/
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static bool IsInCompositorThread();
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nsIWidget* GetWidget() { return mWidget; }
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protected:
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// Protected destructor, to discourage deletion outside of Release():
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virtual ~CompositorParent();
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void DeferredDestroy();
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virtual PLayerTransactionParent*
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AllocPLayerTransactionParent(const nsTArray<LayersBackend>& aBackendHints,
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const uint64_t& aId,
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TextureFactoryIdentifier* aTextureFactoryIdentifier,
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bool* aSuccess) override;
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virtual bool DeallocPLayerTransactionParent(PLayerTransactionParent* aLayers) override;
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virtual void ScheduleTask(CancelableTask*, int);
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void CompositeToTarget(gfx::DrawTarget* aTarget, const gfx::IntRect* aRect = nullptr);
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void ForceComposeToTarget(gfx::DrawTarget* aTarget, const gfx::IntRect* aRect = nullptr);
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void SetEGLSurfaceSize(int width, int height);
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void InitializeLayerManager(const nsTArray<LayersBackend>& aBackendHints);
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void PauseComposition();
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void ResumeComposition();
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void ResumeCompositionAndResize(int width, int height);
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void ForceComposition();
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void CancelCurrentCompositeTask();
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void Invalidate();
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/**
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* Add a compositor to the global compositor map.
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*/
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static void AddCompositor(CompositorParent* compositor, uint64_t* id);
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/**
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* Remove a compositor from the global compositor map.
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*/
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static CompositorParent* RemoveCompositor(uint64_t id);
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/**
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* Return true if current state allows compositing, that is
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* finishing a layers transaction.
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*/
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bool CanComposite();
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void DidComposite(TimeStamp& aCompositeStart, TimeStamp& aCompositeEnd);
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nsRefPtr<LayerManagerComposite> mLayerManager;
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nsRefPtr<Compositor> mCompositor;
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RefPtr<AsyncCompositionManager> mCompositionManager;
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nsIWidget* mWidget;
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TimeStamp mTestTime;
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bool mIsTesting;
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uint64_t mPendingTransaction;
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bool mPaused;
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bool mUseExternalSurfaceSize;
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gfx::IntSize mEGLSurfaceSize;
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mozilla::Monitor mPauseCompositionMonitor;
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mozilla::Monitor mResumeCompositionMonitor;
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uint64_t mCompositorID;
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uint64_t mRootLayerTreeID;
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bool mOverrideComposeReadiness;
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CancelableTask* mForceCompositionTask;
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nsRefPtr<APZCTreeManager> mApzcTreeManager;
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nsRefPtr<CompositorThreadHolder> mCompositorThreadHolder;
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nsRefPtr<CompositorVsyncScheduler> mCompositorScheduler;
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DISALLOW_EVIL_CONSTRUCTORS(CompositorParent);
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};
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} // namespace layers
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} // namespace mozilla
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#endif // mozilla_layers_CompositorParent_h
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