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Commit 42faeabc authored by Matt Pietal's avatar Matt Pietal
Browse files

Transitions - add tracing 

Add sync tracing that includes the name of the 'to' and 'from' states

Bug: 195430376
Test: Take trace and view in perfetto
Change-Id: I3bc15180edf64ff57bb59d382875a4bc35764689
parent 09f2defc

packages/SystemUI/src/com/android/systemui/keyguard/data/repository/KeyguardTransitionRepository.kt

+25 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ import android.animation.AnimatorListenerAdapter 
import android.animation.ValueAnimator

import android.animation.ValueAnimator.AnimatorUpdateListener

import android.annotation.FloatRange

import android.os.Trace

import android.util.Log

import com.android.systemui.dagger.SysUISingleton

import com.android.systemui.keyguard.shared.model.KeyguardState
@@ -157,12 +158,36 @@ class KeyguardTransitionRepository @Inject constructor() { 
        value: Float,

        transitionState: TransitionState

    ) {

        trace(info, transitionState)



        if (transitionState == TransitionState.FINISHED) {

            currentTransitionInfo = null

        }

        _transitions.value = TransitionStep(info.from, info.to, value, transitionState)

    }



    private fun trace(info: TransitionInfo, transitionState: TransitionState) {

        if (

            transitionState != TransitionState.STARTED &&

                transitionState != TransitionState.FINISHED

        ) {

            return

        }

        val traceName =

            "Transition: ${info.from} -> ${info.to} " +

                if (info.animator == null) {

                    "(manual)"

                } else {

                    ""

                }

        val traceCookie = traceName.hashCode()

        if (transitionState == TransitionState.STARTED) {

            Trace.beginAsyncSection(traceName, traceCookie)

        } else if (transitionState == TransitionState.FINISHED) {

            Trace.endAsyncSection(traceName, traceCookie)

        }

    }



    companion object {

        private const val TAG = "KeyguardTransitionRepository"

    }