Add inputEventId to SurfaceFrame
SurfaceFrame will now be aware of the id of the input event that caused
the current frame.
The flow of input event id is inputflinger -> app -> surfaceflinger.
Here, we are adding the 'inputEventId' parameter to the
'setFrameTimelineVsync' call. This call will now be responsible for
setting two pieces of information: the vsync id, and the input event id.
Since it will no longer be limited to the vsync id, we rename this call
to "setFrameTimelineInfo".
Once the inputEventId is stored in SurfaceFrame, we will add a binder
call to send the frame timing information to inputflinger (separate,
future CL). This will allow input to reconstruct the entire sequence of
events (at what time was input event getting processed in system_server,
app, and surfaceflinger) and will provide the ability to measure
end-to-end touch latency.
In a separate change, we will also add ATRACE calls to allow manual /
script-based latency analysis for local debugging. We will now know
which input event is being processed in surfaceflinger.
Bug: 169866723
Bug: 129481165
Design doc: https://docs.google.com/document/d/1G3bLaZYSmbe6AKcL-6ZChvrw_B_LXEz29Z6Ed9QoYXY/edit#
Test: atest WMShellUnitTests SurfaceParcelable_test libgui_test IPC_test SurfaceFlinger_test
Change-Id: If7e0eee82603b38b396b53ad7ced660973efcb50
Merged-In: If7e0eee82603b38b396b53ad7ced660973efcb50
diff --git a/services/surfaceflinger/FrameTimeline/FrameTimeline.h b/services/surfaceflinger/FrameTimeline/FrameTimeline.h
index ed38cc6..54e8efb 100644
--- a/services/surfaceflinger/FrameTimeline/FrameTimeline.h
+++ b/services/surfaceflinger/FrameTimeline/FrameTimeline.h
@@ -154,10 +154,10 @@
// Only FrameTimeline can construct a SurfaceFrame as it provides Predictions(through
// TokenManager), Thresholds and TimeStats pointer.
- SurfaceFrame(int64_t token, pid_t ownerPid, uid_t ownerUid, std::string layerName,
- std::string debugName, PredictionState predictionState, TimelineItem&& predictions,
- std::shared_ptr<TimeStats> timeStats, JankClassificationThresholds thresholds,
- TraceCookieCounter* traceCookieCounter);
+ SurfaceFrame(const FrameTimelineInfo& frameTimelineInfo, pid_t ownerPid, uid_t ownerUid,
+ std::string layerName, std::string debugName, PredictionState predictionState,
+ TimelineItem&& predictions, std::shared_ptr<TimeStats> timeStats,
+ JankClassificationThresholds thresholds, TraceCookieCounter* traceCookieCounter);
~SurfaceFrame() = default;
// Returns std::nullopt if the frame hasn't been classified yet.
@@ -166,6 +166,7 @@
// Functions called by SF
int64_t getToken() const { return mToken; };
+ int32_t getInputEventId() const { return mInputEventId; };
TimelineItem getPredictions() const { return mPredictions; };
// Actual timestamps of the app are set individually at different functions.
// Start time (if the app provides) and Queue time are accessible after queueing the frame,
@@ -198,6 +199,7 @@
private:
const int64_t mToken;
+ const int32_t mInputEventId;
const pid_t mOwnerPid;
const uid_t mOwnerUid;
const std::string mLayerName;
@@ -243,10 +245,9 @@
// Create a new surface frame, set the predictions based on a token and return it to the caller.
// Debug name is the human-readable debugging string for dumpsys.
- virtual std::shared_ptr<SurfaceFrame> createSurfaceFrameForToken(std::optional<int64_t> token,
- pid_t ownerPid, uid_t ownerUid,
- std::string layerName,
- std::string debugName) = 0;
+ virtual std::shared_ptr<SurfaceFrame> createSurfaceFrameForToken(
+ const FrameTimelineInfo& frameTimelineInfo, pid_t ownerPid, uid_t ownerUid,
+ std::string layerName, std::string debugName) = 0;
// Adds a new SurfaceFrame to the current DisplayFrame. Frames from multiple layers can be
// composited into one display frame.
@@ -279,7 +280,7 @@
class TokenManager : public android::frametimeline::TokenManager {
public:
- TokenManager() : mCurrentToken(ISurfaceComposer::INVALID_VSYNC_ID + 1) {}
+ TokenManager() : mCurrentToken(FrameTimelineInfo::INVALID_VSYNC_ID + 1) {}
~TokenManager() = default;
int64_t generateTokenForPredictions(TimelineItem&& predictions) override;
@@ -353,7 +354,7 @@
private:
void dump(std::string& result, nsecs_t baseTime) const;
- int64_t mToken = ISurfaceComposer::INVALID_VSYNC_ID;
+ int64_t mToken = FrameTimelineInfo::INVALID_VSYNC_ID;
/* Usage of TimelineItem w.r.t SurfaceFlinger
* startTime Time when SurfaceFlinger wakes up to handle transactions and buffer updates
@@ -393,10 +394,9 @@
~FrameTimeline() = default;
frametimeline::TokenManager* getTokenManager() override { return &mTokenManager; }
- std::shared_ptr<SurfaceFrame> createSurfaceFrameForToken(std::optional<int64_t> token,
- pid_t ownerPid, uid_t ownerUid,
- std::string layerName,
- std::string debugName) override;
+ std::shared_ptr<SurfaceFrame> createSurfaceFrameForToken(
+ const FrameTimelineInfo& frameTimelineInfo, pid_t ownerPid, uid_t ownerUid,
+ std::string layerName, std::string debugName) override;
void addSurfaceFrame(std::shared_ptr<frametimeline::SurfaceFrame> surfaceFrame) override;
void setSfWakeUp(int64_t token, nsecs_t wakeupTime, nsecs_t vsyncPeriod) override;
void setSfPresent(nsecs_t sfPresentTime,