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Commit 2cd009c5 authored by Jernej Virag's avatar Jernej Virag
Browse files

Trace callbacks for user switcher 

This allows us to debug slow user switch latency with more accuracy.

Bug: 376759407
Test: trace only
Flag: EXEMPT log only update
Change-Id: I3aa30c00596386b4012d8c073bd964dda5b9028c
parent 5ddbc132

packages/SystemUI/src/com/android/systemui/settings/UserTrackerImpl.kt

+5 −2
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ import android.os.UserManager 
import android.util.Log

import androidx.annotation.GuardedBy

import androidx.annotation.WorkerThread

import com.android.app.tracing.coroutines.launchTraced as launch

import com.android.app.tracing.traceSection

import com.android.systemui.Dumpable

import com.android.systemui.dump.DumpManager

import com.android.systemui.flags.FeatureFlagsClassic
@@ -49,7 +51,6 @@ import kotlinx.coroutines.Job 
import kotlinx.coroutines.asCoroutineDispatcher

import kotlinx.coroutines.coroutineScope

import kotlinx.coroutines.delay

import com.android.app.tracing.coroutines.launchTraced as launch

import kotlinx.coroutines.sync.Mutex



/**
@@ -314,7 +315,9 @@ internal constructor( 
        list.forEach {

            val callback = it.callback.get()

            if (callback != null) {

                it.executor.execute { action(callback) { latch.countDown() } }

                it.executor.execute {

                    traceSection({ "$callback" }) { action(callback) { latch.countDown() } }

                }

            } else {

                latch.countDown()

            }