Improve unfold related logging in perfetto traces (2b2a5651) · Commits · e / os / android_frameworks_base

packages/SystemUI/shared/src/com/android/systemui/unfold/system/DeviceStateRepository.kt

0 → 100644

+50 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 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.
		*/
		package com.android.systemui.unfold.system

		import com.android.systemui.unfold.dagger.UnfoldMain
		import com.android.systemui.unfold.updates.FoldProvider
		import com.android.systemui.unfold.updates.FoldProvider.FoldCallback
		import java.util.concurrent.Executor
		import javax.inject.Inject
		import javax.inject.Singleton
		import kotlinx.coroutines.channels.Channel
		import kotlinx.coroutines.channels.awaitClose
		import kotlinx.coroutines.flow.Flow
		import kotlinx.coroutines.flow.buffer
		import kotlinx.coroutines.flow.callbackFlow

		/** Provides whether the device is folded. */
		interface DeviceStateRepository {
		val isFolded: Flow<Boolean>
		}

		@Singleton
		class DeviceStateRepositoryImpl
		@Inject
		constructor(
		private val foldProvider: FoldProvider,
		@UnfoldMain private val executor: Executor,
		) : DeviceStateRepository {

		override val isFolded: Flow<Boolean>
		get() =
		callbackFlow {
		val callback = FoldCallback { isFolded -> trySend(isFolded) }
		foldProvider.registerCallback(callback, executor)
		awaitClose { foldProvider.unregisterCallback(callback) }
		}
		.buffer(capacity = Channel.CONFLATED)
		}

packages/SystemUI/shared/src/com/android/systemui/unfold/system/SystemUnfoldSharedModule.kt

+3 −0

Original line number	Diff line number	Diff line
		@@ -47,6 +47,9 @@ abstract class SystemUnfoldSharedModule {
		@Binds
		abstract fun foldState(provider: DeviceStateManagerFoldProvider): FoldProvider

		@Binds
		abstract fun deviceStateRepository(provider: DeviceStateRepositoryImpl): DeviceStateRepository

		@Binds
		@UnfoldMain
		abstract fun mainExecutor(@Main executor: Executor): Executor

packages/SystemUI/shared/src/com/android/systemui/util/TraceStateLogger.kt

0 → 100644

+54 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 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.
		*/
		package com.android.systemui.util

		import android.os.Trace

		/**
		* Utility class used to log state changes easily in a track with a custom name.
		*
		* Example of usage:
		* ```kotlin
		* class MyClass {
		* val screenStateLogger = TraceStateLogger("Screen state")
		*
		* fun onTurnedOn() { screenStateLogger.log("on") }
		* fun onTurnedOff() { screenStateLogger.log("off") }
		* }
		* ```
		*
		* This creates a new slice in a perfetto trace only if the state is different than the previous
		* one.
		*/
		class TraceStateLogger(
		private val trackName: String,
		private val logOnlyIfDifferent: Boolean = true,
		private val instantEvent: Boolean = true
		) {

		private var previousValue: String? = null

		/** If needed, logs the value to a track with name [trackName]. */
		fun log(newValue: String) {
		if (instantEvent) {
		Trace.instantForTrack(Trace.TRACE_TAG_APP, trackName, newValue)
		}
		if (logOnlyIfDifferent && previousValue == newValue) return
		Trace.asyncTraceForTrackEnd(Trace.TRACE_TAG_APP, trackName, 0)
		Trace.asyncTraceForTrackBegin(Trace.TRACE_TAG_APP, trackName, newValue, 0)
		previousValue = newValue
		}
		}

packages/SystemUI/src/com/android/systemui/unfold/UnfoldLatencyTracker.kt

+22 −3

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@ package com.android.systemui.unfold
		import android.content.ContentResolver
		import android.content.Context
		import android.hardware.devicestate.DeviceStateManager
		import android.os.Trace
		import android.util.Log
		import com.android.internal.util.LatencyTracker
		import com.android.systemui.dagger.SysUISingleton
		@@ -57,6 +58,7 @@ constructor(
		private var folded: Boolean? = null
		private var isTransitionEnabled: Boolean? = null
		private val foldStateListener = FoldStateListener(context)
		private var unfoldInProgress = false
		private val isFoldable: Boolean
		get() =
		context.resources
		@@ -95,7 +97,7 @@ constructor(
		// the unfold animation (e.g. it could be disabled because of battery saver).
		// When animation is enabled finishing of the tracking will be done in onTransitionStarted.
		if (folded == false && isTransitionEnabled == false) {
		latencyTracker.onActionEnd(LatencyTracker.ACTION_SWITCH_DISPLAY_UNFOLD)
		onUnfoldEnded()

		if (DEBUG) {
		Log.d(TAG, "onScreenTurnedOn: ending ACTION_SWITCH_DISPLAY_UNFOLD")
		@@ -116,7 +118,7 @@ constructor(
		}

		if (folded == false && isTransitionEnabled == true) {
		latencyTracker.onActionEnd(LatencyTracker.ACTION_SWITCH_DISPLAY_UNFOLD)
		onUnfoldEnded()

		if (DEBUG) {
		Log.d(TAG, "onTransitionStarted: ending ACTION_SWITCH_DISPLAY_UNFOLD")
		@@ -124,6 +126,22 @@ constructor(
		}
		}

		private fun onUnfoldStarted() {
		if (unfoldInProgress) return
		unfoldInProgress = true
		// As LatencyTracker might be disabled, let's also log a parallel slice to the trace to be
		// able to debug all cases.
		latencyTracker.onActionStart(LatencyTracker.ACTION_SWITCH_DISPLAY_UNFOLD)
		Trace.asyncTraceBegin(Trace.TRACE_TAG_APP, UNFOLD_IN_PROGRESS_TRACE_NAME, /* cookie= */ 0)
		}

		private fun onUnfoldEnded() {
		if (!unfoldInProgress) return
		unfoldInProgress = false
		latencyTracker.onActionEnd(LatencyTracker.ACTION_SWITCH_DISPLAY_UNFOLD)
		Trace.endAsyncSection(UNFOLD_IN_PROGRESS_TRACE_NAME, 0)
		}

		private fun onFoldEvent(folded: Boolean) {
		val oldFolded = this.folded

		@@ -139,7 +157,7 @@ constructor(
		// unfolding the device.
		if (oldFolded != null && !folded) {
		// Unfolding started
		latencyTracker.onActionStart(LatencyTracker.ACTION_SWITCH_DISPLAY_UNFOLD)
		onUnfoldStarted()
		isTransitionEnabled =
		transitionProgressProvider.isPresent && contentResolver.areAnimationsEnabled()

		@@ -159,4 +177,5 @@ constructor(
		}

		private const val TAG = "UnfoldLatencyTracker"
		private const val UNFOLD_IN_PROGRESS_TRACE_NAME = "Switch displays during unfold"
		private val DEBUG = Compile.IS_DEBUG && Log.isLoggable(TAG, Log.VERBOSE)

packages/SystemUI/src/com/android/systemui/unfold/UnfoldTraceLogger.kt

0 → 100644

+75 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 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.
		*/
		package com.android.systemui.unfold

		import android.content.Context
		import android.os.Trace
		import com.android.systemui.CoreStartable
		import com.android.systemui.dagger.SysUISingleton
		import com.android.systemui.dagger.qualifiers.Application
		import com.android.systemui.unfold.system.DeviceStateRepository
		import com.android.systemui.unfold.updates.FoldStateRepository
		import com.android.systemui.util.TraceStateLogger
		import javax.inject.Inject
		import kotlinx.coroutines.CoroutineScope
		import kotlinx.coroutines.launch

		/**
		* Logs several unfold related details in a trace. Mainly used for debugging and investigate
		* droidfooders traces.
		*/
		@SysUISingleton
		class UnfoldTraceLogger
		@Inject
		constructor(
		private val context: Context,
		private val foldStateRepository: FoldStateRepository,
		@Application private val applicationScope: CoroutineScope,
		private val deviceStateRepository: DeviceStateRepository
		) : CoreStartable {
		private val isFoldable: Boolean
		get() =
		context.resources
		.getIntArray(com.android.internal.R.array.config_foldedDeviceStates)
		.isNotEmpty()

		override fun start() {
		if (!isFoldable) return

		applicationScope.launch {
		val foldUpdateLogger = TraceStateLogger("FoldUpdate")
		foldStateRepository.foldUpdate.collect { foldUpdateLogger.log(it.name) }
		}

		applicationScope.launch {
		foldStateRepository.hingeAngle.collect {
		Trace.traceCounter(Trace.TRACE_TAG_APP, "hingeAngle", it.toInt())
		}
		}
		applicationScope.launch {
		val foldedStateLogger = TraceStateLogger("FoldedState")
		deviceStateRepository.isFolded.collect { isFolded ->
		foldedStateLogger.log(
		if (isFolded) {
		"folded"
		} else {
		"unfolded"
		}
		)
		}
		}
		}
		}