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replicant-frameworks_native/services/surfaceflinger/SurfaceFlinger.h
Dan Stoza 14cd37cf3d SF: Track missed frames and optionally drop them 
Adds code to track whether SurfaceFlinger has sent two frames to HWC in
the same vsync window. This can occur if one frame is delayed so far
it slips into the next window or just if one frame takes an abnormal
amount of time. If this occurs, it shows up as FrameMissed in systrace.

Also adds a property debug.sf.drop_missed_frames which, if set, tells
SurfaceFlinger to skip sending a frame to HWC (i.e., calling
prepare/set) when we detect this condition, which can help prevent
backpressure from the HWC implementation.

Bug: 22513558
Change-Id: I2df0d44cec5fd6edba419388d8c90b5710d1a5b6
2015-07-23 11:15:32 -07:00

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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_SURFACE_FLINGER_H
#define ANDROID_SURFACE_FLINGER_H
#include <stdint.h>
#include <sys/types.h>
#include <EGL/egl.h>
/*
* NOTE: Make sure this file doesn't include anything from <gl/ > or <gl2/ >
*/
#include <cutils/compiler.h>
#include <utils/Atomic.h>
#include <utils/Errors.h>
#include <utils/KeyedVector.h>
#include <utils/RefBase.h>
#include <utils/SortedVector.h>
#include <utils/threads.h>
#include <binder/IMemory.h>
#include <ui/PixelFormat.h>
#include <ui/mat4.h>
#include <gui/ISurfaceComposer.h>
#include <gui/ISurfaceComposerClient.h>
#include <hardware/hwcomposer_defs.h>
#include <private/gui/LayerState.h>
#include "Barrier.h"
#include "DisplayDevice.h"
#include "DispSync.h"
#include "FrameTracker.h"
#include "MessageQueue.h"
#include "DisplayHardware/HWComposer.h"
#include "Effects/Daltonizer.h"
namespace android {
// ---------------------------------------------------------------------------
class Client;
class DisplayEventConnection;
class EventThread;
class IGraphicBufferAlloc;
class Layer;
class LayerDim;
class Surface;
class RenderEngine;
class EventControlThread;
// ---------------------------------------------------------------------------
enum {
eTransactionNeeded = 0x01,
eTraversalNeeded = 0x02,
eDisplayTransactionNeeded = 0x04,
eTransactionMask = 0x07
};
class SurfaceFlinger : public BnSurfaceComposer,
private IBinder::DeathRecipient,
private HWComposer::EventHandler
{
public:
static char const* getServiceName() ANDROID_API {
return "SurfaceFlinger";
}
SurfaceFlinger() ANDROID_API;
// must be called before clients can connect
void init() ANDROID_API;
// starts SurfaceFlinger main loop in the current thread
void run() ANDROID_API;
enum {
EVENT_VSYNC = HWC_EVENT_VSYNC
};
// post an asynchronous message to the main thread
status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
// post a synchronous message to the main thread
status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
// force full composition on all displays
void repaintEverything();
// returns the default Display
sp<const DisplayDevice> getDefaultDisplayDevice() const {
return getDisplayDevice(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]);
}
// utility function to delete a texture on the main thread
void deleteTextureAsync(uint32_t texture);
// enable/disable h/w composer event
// TODO: this should be made accessible only to EventThread
void eventControl(int disp, int event, int enabled);
// called on the main thread by MessageQueue when an internal message
// is received
// TODO: this should be made accessible only to MessageQueue
void onMessageReceived(int32_t what);
// for debugging only
// TODO: this should be made accessible only to HWComposer
const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id);
RenderEngine& getRenderEngine() const {
return *mRenderEngine;
}
private:
friend class Client;
friend class DisplayEventConnection;
friend class Layer;
friend class MonitoredProducer;
// This value is specified in number of frames. Log frame stats at most
// every half hour.
enum { LOG_FRAME_STATS_PERIOD = 30*60*60 };
static const size_t MAX_LAYERS = 4096;
// We're reference counted, never destroy SurfaceFlinger directly
virtual ~SurfaceFlinger();
/* ------------------------------------------------------------------------
* Internal data structures
*/
class LayerVector : public SortedVector< sp<Layer> > {
public:
LayerVector();
LayerVector(const LayerVector& rhs);
virtual int do_compare(const void* lhs, const void* rhs) const;
};
struct DisplayDeviceState {
DisplayDeviceState();
DisplayDeviceState(DisplayDevice::DisplayType type);
bool isValid() const { return type >= 0; }
bool isMainDisplay() const { return type == DisplayDevice::DISPLAY_PRIMARY; }
bool isVirtualDisplay() const { return type >= DisplayDevice::DISPLAY_VIRTUAL; }
DisplayDevice::DisplayType type;
sp<IGraphicBufferProducer> surface;
uint32_t layerStack;
Rect viewport;
Rect frame;
uint8_t orientation;
uint32_t width, height;
String8 displayName;
bool isSecure;
};
struct State {
LayerVector layersSortedByZ;
DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays;
};
/* ------------------------------------------------------------------------
* IBinder interface
*/
virtual status_t onTransact(uint32_t code, const Parcel& data,
Parcel* reply, uint32_t flags);
virtual status_t dump(int fd, const Vector<String16>& args);
/* ------------------------------------------------------------------------
* ISurfaceComposer interface
*/
virtual sp<ISurfaceComposerClient> createConnection();
virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc();
virtual sp<IBinder> createDisplay(const String8& displayName, bool secure);
virtual void destroyDisplay(const sp<IBinder>& display);
virtual sp<IBinder> getBuiltInDisplay(int32_t id);
virtual void setTransactionState(const Vector<ComposerState>& state,
const Vector<DisplayState>& displays, uint32_t flags);
virtual void bootFinished();
virtual bool authenticateSurfaceTexture(
const sp<IGraphicBufferProducer>& bufferProducer) const;
virtual sp<IDisplayEventConnection> createDisplayEventConnection();
virtual status_t captureScreen(const sp<IBinder>& display,
const sp<IGraphicBufferProducer>& producer,
Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
uint32_t minLayerZ, uint32_t maxLayerZ,
bool useIdentityTransform, ISurfaceComposer::Rotation rotation);
virtual status_t getDisplayStats(const sp<IBinder>& display,
DisplayStatInfo* stats);
virtual status_t getDisplayConfigs(const sp<IBinder>& display,
Vector<DisplayInfo>* configs);
virtual int getActiveConfig(const sp<IBinder>& display);
virtual void setPowerMode(const sp<IBinder>& display, int mode);
virtual status_t setActiveConfig(const sp<IBinder>& display, int id);
virtual status_t clearAnimationFrameStats();
virtual status_t getAnimationFrameStats(FrameStats* outStats) const;
/* ------------------------------------------------------------------------
* DeathRecipient interface
*/
virtual void binderDied(const wp<IBinder>& who);
/* ------------------------------------------------------------------------
* RefBase interface
*/
virtual void onFirstRef();
/* ------------------------------------------------------------------------
* HWComposer::EventHandler interface
*/
virtual void onVSyncReceived(int type, nsecs_t timestamp);
virtual void onHotplugReceived(int disp, bool connected);
/* ------------------------------------------------------------------------
* Message handling
*/
void waitForEvent();
void signalTransaction();
void signalLayerUpdate();
void signalRefresh();
// called on the main thread in response to initializeDisplays()
void onInitializeDisplays();
// called on the main thread in response to setActiveConfig()
void setActiveConfigInternal(const sp<DisplayDevice>& hw, int mode);
// called on the main thread in response to setPowerMode()
void setPowerModeInternal(const sp<DisplayDevice>& hw, int mode);
// Returns whether the transaction actually modified any state
bool handleMessageTransaction();
// Returns whether a new buffer has been latched (see handlePageFlip())
bool handleMessageInvalidate();
void handleMessageRefresh();
void handleTransaction(uint32_t transactionFlags);
void handleTransactionLocked(uint32_t transactionFlags);
void updateCursorAsync();
/* handlePageFlip - latch a new buffer if available and compute the dirty
* region. Returns whether a new buffer has been latched, i.e., whether it
* is necessary to perform a refresh during this vsync.
*/
bool handlePageFlip();
/* ------------------------------------------------------------------------
* Transactions
*/
uint32_t getTransactionFlags(uint32_t flags);
uint32_t peekTransactionFlags(uint32_t flags);
uint32_t setTransactionFlags(uint32_t flags);
void commitTransaction();
uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s);
uint32_t setDisplayStateLocked(const DisplayState& s);
/* ------------------------------------------------------------------------
* Layer management
*/
status_t createLayer(const String8& name, const sp<Client>& client,
uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp);
status_t createNormalLayer(const sp<Client>& client, const String8& name,
uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp,
sp<Layer>* outLayer);
status_t createDimLayer(const sp<Client>& client, const String8& name,
uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
sp<IGraphicBufferProducer>* outGbp, sp<Layer>* outLayer);
// called in response to the window-manager calling
// ISurfaceComposerClient::destroySurface()
status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle);
// called when all clients have released all their references to
// this layer meaning it is entirely safe to destroy all
// resources associated to this layer.
status_t onLayerDestroyed(const wp<Layer>& layer);
// remove a layer from SurfaceFlinger immediately
status_t removeLayer(const sp<Layer>& layer);
// add a layer to SurfaceFlinger
status_t addClientLayer(const sp<Client>& client,
const sp<IBinder>& handle,
const sp<IGraphicBufferProducer>& gbc,
const sp<Layer>& lbc);
/* ------------------------------------------------------------------------
* Boot animation, on/off animations and screen capture
*/
void startBootAnim();
void renderScreenImplLocked(
const sp<const DisplayDevice>& hw,
Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
uint32_t minLayerZ, uint32_t maxLayerZ,
bool yswap, bool useIdentityTransform, Transform::orientation_flags rotation);
status_t captureScreenImplLocked(
const sp<const DisplayDevice>& hw,
const sp<IGraphicBufferProducer>& producer,
Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
uint32_t minLayerZ, uint32_t maxLayerZ,
bool useIdentityTransform, Transform::orientation_flags rotation);
/* ------------------------------------------------------------------------
* EGL
*/
size_t getMaxTextureSize() const;
size_t getMaxViewportDims() const;
/* ------------------------------------------------------------------------
* Display and layer stack management
*/
// called when starting, or restarting after system_server death
void initializeDisplays();
// Create an IBinder for a builtin display and add it to current state
void createBuiltinDisplayLocked(DisplayDevice::DisplayType type);
// NOTE: can only be called from the main thread or with mStateLock held
sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const {
return mDisplays.valueFor(dpy);
}
// NOTE: can only be called from the main thread or with mStateLock held
sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) {
return mDisplays.valueFor(dpy);
}
// mark a region of a layer stack dirty. this updates the dirty
// region of all screens presenting this layer stack.
void invalidateLayerStack(uint32_t layerStack, const Region& dirty);
// allocate a h/w composer display id
int32_t allocateHwcDisplayId(DisplayDevice::DisplayType type);
/* ------------------------------------------------------------------------
* H/W composer
*/
HWComposer& getHwComposer() const { return *mHwc; }
/* ------------------------------------------------------------------------
* Compositing
*/
void invalidateHwcGeometry();
static void computeVisibleRegions(
const LayerVector& currentLayers, uint32_t layerStack,
Region& dirtyRegion, Region& opaqueRegion);
void preComposition();
void postComposition();
void rebuildLayerStacks();
void setUpHWComposer();
void doComposition();
void doDebugFlashRegions();
void doDisplayComposition(const sp<const DisplayDevice>& hw, const Region& dirtyRegion);
// compose surfaces for display hw. this fails if using GL and the surface
// has been destroyed and is no longer valid.
bool doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty);
void postFramebuffer();
void drawWormhole(const sp<const DisplayDevice>& hw, const Region& region) const;
/* ------------------------------------------------------------------------
* Display management
*/
/* ------------------------------------------------------------------------
* VSync
*/
void enableHardwareVsync();
void disableHardwareVsync(bool makeUnavailable);
void resyncToHardwareVsync(bool makeAvailable);
/* ------------------------------------------------------------------------
* Debugging & dumpsys
*/
void listLayersLocked(const Vector<String16>& args, size_t& index, String8& result) const;
void dumpStatsLocked(const Vector<String16>& args, size_t& index, String8& result) const;
void clearStatsLocked(const Vector<String16>& args, size_t& index, String8& result);
void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const;
bool startDdmConnection();
static void appendSfConfigString(String8& result);
void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
const sp<const DisplayDevice>& hw,
uint32_t minLayerZ, uint32_t maxLayerZ);
void logFrameStats();
void dumpStaticScreenStats(String8& result) const;
/* ------------------------------------------------------------------------
* Attributes
*/
// access must be protected by mStateLock
mutable Mutex mStateLock;
State mCurrentState;
volatile int32_t mTransactionFlags;
Condition mTransactionCV;
bool mTransactionPending;
bool mAnimTransactionPending;
Vector< sp<Layer> > mLayersPendingRemoval;
SortedVector< wp<IBinder> > mGraphicBufferProducerList;
// protected by mStateLock (but we could use another lock)
bool mLayersRemoved;
// access must be protected by mInvalidateLock
volatile int32_t mRepaintEverything;
// constant members (no synchronization needed for access)
HWComposer* mHwc;
RenderEngine* mRenderEngine;
nsecs_t mBootTime;
bool mGpuToCpuSupported;
bool mDropMissedFrames;
sp<EventThread> mEventThread;
sp<EventThread> mSFEventThread;
sp<EventControlThread> mEventControlThread;
EGLContext mEGLContext;
EGLDisplay mEGLDisplay;
sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES];
// Can only accessed from the main thread, these members
// don't need synchronization
State mDrawingState;
bool mVisibleRegionsDirty;
bool mHwWorkListDirty;
bool mAnimCompositionPending;
// this may only be written from the main thread with mStateLock held
// it may be read from other threads with mStateLock held
DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays;
// don't use a lock for these, we don't care
int mDebugRegion;
int mDebugDDMS;
int mDebugDisableHWC;
int mDebugDisableTransformHint;
volatile nsecs_t mDebugInSwapBuffers;
nsecs_t mLastSwapBufferTime;
volatile nsecs_t mDebugInTransaction;
nsecs_t mLastTransactionTime;
bool mBootFinished;
bool mForceFullDamage;
// these are thread safe
mutable MessageQueue mEventQueue;
FrameTracker mAnimFrameTracker;
DispSync mPrimaryDispSync;
// protected by mDestroyedLayerLock;
mutable Mutex mDestroyedLayerLock;
Vector<Layer const *> mDestroyedLayers;
// protected by mHWVsyncLock
Mutex mHWVsyncLock;
bool mPrimaryHWVsyncEnabled;
bool mHWVsyncAvailable;
/* ------------------------------------------------------------------------
* Feature prototyping
*/
Daltonizer mDaltonizer;
bool mDaltonize;
mat4 mColorMatrix;
bool mHasColorMatrix;
// Static screen stats
bool mHasPoweredOff;
static const size_t NUM_BUCKETS = 8; // < 1-7, 7+
nsecs_t mFrameBuckets[NUM_BUCKETS];
nsecs_t mTotalTime;
nsecs_t mLastSwapTime;
};
}; // namespace android
#endif // ANDROID_SURFACE_FLINGER_H
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