Merge changes I22ff91e8,I6dcef977 into rvc-dev am: 52c8bac7d7 (41dbdf6e) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/SystemUIService.java

+7 −7

Original line number	Diff line number	Diff line
		@@ -28,7 +28,7 @@ import android.util.Slog;

		import com.android.internal.os.BinderInternal;
		import com.android.systemui.dagger.qualifiers.Main;
		import com.android.systemui.dump.DumpManager;
		import com.android.systemui.dump.DumpHandler;
		import com.android.systemui.dump.SystemUIAuxiliaryDumpService;

		import java.io.FileDescriptor;
		@@ -39,15 +39,15 @@ import javax.inject.Inject;
		public class SystemUIService extends Service {

		private final Handler mMainHandler;
		private final DumpManager mDumpManager;
		private final DumpHandler mDumpHandler;

		@Inject
		public SystemUIService(
		@Main Handler mainHandler,
		DumpManager dumpManager) {
		DumpHandler dumpHandler) {
		super();
		mMainHandler = mainHandler;
		mDumpManager = dumpManager;
		mDumpHandler = dumpHandler;
		}

		@Override
		@@ -94,10 +94,10 @@ public class SystemUIService extends Service {
		String[] massagedArgs = args;
		if (args.length == 0) {
		massagedArgs = new String[] {
		DumpManager.PRIORITY_ARG,
		DumpManager.PRIORITY_ARG_CRITICAL};
		DumpHandler.PRIORITY_ARG,
		DumpHandler.PRIORITY_ARG_CRITICAL};
		}

		mDumpManager.dump(fd, pw, massagedArgs);
		mDumpHandler.dump(fd, pw, massagedArgs);
		}
		}

packages/SystemUI/src/com/android/systemui/dump/DumpHandler.kt

0 → 100644

+311 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 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.dump

		import android.content.Context
		import android.os.SystemClock
		import android.os.Trace
		import com.android.systemui.R
		import com.android.systemui.dump.DumpHandler.Companion.PRIORITY_ARG_CRITICAL
		import com.android.systemui.dump.DumpHandler.Companion.PRIORITY_ARG_HIGH
		import com.android.systemui.dump.DumpHandler.Companion.PRIORITY_ARG_NORMAL
		import com.android.systemui.log.LogBuffer
		import java.io.FileDescriptor
		import java.io.PrintWriter
		import javax.inject.Inject

		/**
		* Oversees SystemUI's output during bug reports (and dumpsys in general)
		*
		* Dump output is split into two sections, CRITICAL and NORMAL. In general, the CRITICAL section
		* contains all dumpables that were registered to the [DumpManager], while the NORMAL sections
		* contains all [LogBuffer]s (due to their length).
		*
		* The CRITICAL and NORMAL sections can be found within a bug report by searching for
		* "SERVICE com.android.systemui/.SystemUIService" and
		* "SERVICE com.android.systemui/.dump.SystemUIAuxiliaryDumpService", respectively.
		*
		* Finally, some or all of the dump can be triggered on-demand via adb (see below).
		*
		* ```
		* # For the following, let <invocation> be:
		* $ adb shell dumpsys activity service com.android.systemui/.SystemUIService
		*
		* # To dump specific target(s), specify one or more registered names:
		* $ <invocation> NotifCollection
		* $ <invocation> StatusBar FalsingManager BootCompleteCacheImpl
		*
		* # Log buffers can be dumped in the same way (and can even be mixed in with other dump targets,
		* # although it's not clear why one would want such a thing):
		* $ <invocation> NotifLog
		* $ <invocation> StatusBar NotifLog BootCompleteCacheImpl
		*
		* # If passing -t or --tail, shows only the last N lines of any log buffers:
		* $ <invocation> NotifLog --tail 100
		*
		* # Dump targets are matched using String.endsWith(), so dumpables that register using their
		* # fully-qualified class name can still be dumped using their short name:
		* $ <invocation> com.android.keyguard.KeyguardUpdateMonitor
		* $ <invocation> keyguard.KeyguardUpdateMonitor
		* $ <invocation> KeyguardUpdateMonitor
		*
		* # To dump all dumpables or all buffers:
		* $ <invocation> dumpables
		* $ <invocation> buffers
		*
		* # Finally, the following will simulate what we dump during the CRITICAL and NORMAL sections of a
		* # bug report:
		* $ <invocation> bugreport-critical
		* $ <invocation> bugreport-normal
		*
		* # And if you need to be reminded of this list of commands:
		* $ <invocation> -h
		* $ <invocation> --help
		* ```
		*/
		class DumpHandler @Inject constructor(
		private val context: Context,
		private val dumpManager: DumpManager,
		private val logBufferEulogizer: LogBufferEulogizer
		) {
		/**
		* Dump the diagnostics! Behavior can be controlled via [args].
		*/
		fun dump(fd: FileDescriptor, pw: PrintWriter, args: Array<String>) {
		Trace.beginSection("DumpManager#dump()")
		val start = SystemClock.uptimeMillis()

		val parsedArgs = try {
		parseArgs(args)
		} catch (e: ArgParseException) {
		pw.println(e.message)
		return
		}

		when (parsedArgs.dumpPriority) {
		PRIORITY_ARG_CRITICAL -> dumpCritical(fd, pw, parsedArgs)
		PRIORITY_ARG_NORMAL -> dumpNormal(pw, parsedArgs)
		else -> dumpParameterized(fd, pw, parsedArgs)
		}

		pw.println()
		pw.println("Dump took ${SystemClock.uptimeMillis() - start}ms")
		Trace.endSection()
		}

		private fun dumpParameterized(fd: FileDescriptor, pw: PrintWriter, args: ParsedArgs) {
		when (args.command) {
		"bugreport-critical" -> dumpCritical(fd, pw, args)
		"bugreport-normal" -> dumpNormal(pw, args)
		"dumpables" -> dumpDumpables(fd, pw, args)
		"buffers" -> dumpBuffers(pw, args)
		"config" -> dumpConfig(pw)
		"help" -> dumpHelp(pw)
		else -> dumpTargets(args.nonFlagArgs, fd, pw, args)
		}
		}

		private fun dumpCritical(fd: FileDescriptor, pw: PrintWriter, args: ParsedArgs) {
		dumpManager.dumpDumpables(fd, pw, args.rawArgs)
		dumpConfig(pw)
		}

		private fun dumpNormal(pw: PrintWriter, args: ParsedArgs) {
		dumpManager.dumpBuffers(pw, args.tailLength)
		logBufferEulogizer.readEulogyIfPresent(pw)
		}

		private fun dumpDumpables(fw: FileDescriptor, pw: PrintWriter, args: ParsedArgs) {
		if (args.listOnly) {
		dumpManager.listDumpables(pw)
		} else {
		dumpManager.dumpDumpables(fw, pw, args.rawArgs)
		}
		}

		private fun dumpBuffers(pw: PrintWriter, args: ParsedArgs) {
		if (args.listOnly) {
		dumpManager.listBuffers(pw)
		} else {
		dumpManager.dumpBuffers(pw, args.tailLength)
		}
		}

		private fun dumpTargets(
		targets: List<String>,
		fd: FileDescriptor,
		pw: PrintWriter,
		args: ParsedArgs
		) {
		if (targets.isNotEmpty()) {
		for (target in targets) {
		dumpManager.dumpTarget(target, fd, pw, args.rawArgs, args.tailLength)
		}
		} else {
		if (args.listOnly) {
		pw.println("Dumpables:")
		dumpManager.listDumpables(pw)
		pw.println()

		pw.println("Buffers:")
		dumpManager.listBuffers(pw)
		} else {
		pw.println("Nothing to dump :(")
		}
		}
		}

		private fun dumpConfig(pw: PrintWriter) {
		pw.println("SystemUiServiceComponents configuration:")
		pw.print("vendor component: ")
		pw.println(context.resources.getString(R.string.config_systemUIVendorServiceComponent))
		dumpServiceList(pw, "global", R.array.config_systemUIServiceComponents)
		dumpServiceList(pw, "per-user", R.array.config_systemUIServiceComponentsPerUser)
		}

		private fun dumpServiceList(pw: PrintWriter, type: String, resId: Int) {
		val services: Array<String>? = context.resources.getStringArray(resId)
		pw.print(type)
		pw.print(": ")
		if (services == null) {
		pw.println("N/A")
		return
		}
		pw.print(services.size)
		pw.println(" services")
		for (i in services.indices) {
		pw.print(" ")
		pw.print(i)
		pw.print(": ")
		pw.println(services[i])
		}
		}

		private fun dumpHelp(pw: PrintWriter) {
		pw.println("Let <invocation> be:")
		pw.println("$ adb shell dumpsys activity service com.android.systemui/.SystemUIService")
		pw.println()

		pw.println("Most common usage:")
		pw.println("$ <invocation> <targets>")
		pw.println("$ <invocation> NotifLog")
		pw.println("$ <invocation> StatusBar FalsingManager BootCompleteCacheImpl")
		pw.println("etc.")
		pw.println()

		pw.println("Special commands:")
		pw.println("$ <invocation> dumpables")
		pw.println("$ <invocation> buffers")
		pw.println("$ <invocation> bugreport-critical")
		pw.println("$ <invocation> bugreport-normal")
		pw.println()

		pw.println("Targets can be listed:")
		pw.println("$ <invocation> --list")
		pw.println("$ <invocation> dumpables --list")
		pw.println("$ <invocation> buffers --list")
		pw.println()

		pw.println("Show only the most recent N lines of buffers")
		pw.println("$ <invocation> NotifLog --tail 30")
		}

		private fun parseArgs(args: Array<String>): ParsedArgs {
		val mutArgs = args.toMutableList()
		val pArgs = ParsedArgs(args, mutArgs)

		val iterator = mutArgs.iterator()
		while (iterator.hasNext()) {
		val arg = iterator.next()
		if (arg.startsWith("-")) {
		iterator.remove()
		when (arg) {
		PRIORITY_ARG -> {
		pArgs.dumpPriority = readArgument(iterator, PRIORITY_ARG) {
		if (PRIORITY_OPTIONS.contains(it)) {
		it
		} else {
		throw IllegalArgumentException()
		}
		}
		}
		"-t", "--tail" -> {
		pArgs.tailLength = readArgument(iterator, arg) {
		it.toInt()
		}
		}
		"-l", "--list" -> {
		pArgs.listOnly = true
		}
		"-h", "--help" -> {
		pArgs.command = "help"
		}
		else -> {
		throw ArgParseException("Unknown flag: $arg")
		}
		}
		}
		}

		if (pArgs.command == null && mutArgs.isNotEmpty() && COMMANDS.contains(mutArgs[0])) {
		pArgs.command = mutArgs.removeAt(0)
		}

		return pArgs
		}

		private fun <T> readArgument(
		iterator: MutableIterator<String>,
		flag: String,
		parser: (arg: String) -> T
		): T {
		if (!iterator.hasNext()) {
		throw ArgParseException("Missing argument for $flag")
		}
		val value = iterator.next()

		return try {
		parser(value).also { iterator.remove() }
		} catch (e: Exception) {
		throw ArgParseException("Invalid argument '$value' for flag $flag")
		}
		}

		companion object {
		const val PRIORITY_ARG = "--dump-priority"
		const val PRIORITY_ARG_CRITICAL = "CRITICAL"
		const val PRIORITY_ARG_HIGH = "HIGH"
		const val PRIORITY_ARG_NORMAL = "NORMAL"
		}
		}

		private val PRIORITY_OPTIONS =
		arrayOf(PRIORITY_ARG_CRITICAL, PRIORITY_ARG_HIGH, PRIORITY_ARG_NORMAL)

		private val COMMANDS = arrayOf("bugreport-critical", "bugreport-normal", "buffers", "dumpables")

		private class ParsedArgs(
		val rawArgs: Array<String>,
		val nonFlagArgs: List<String>
		) {
		var dumpPriority: String? = null
		var tailLength: Int = 0
		var command: String? = null
		var listOnly = false
		}

		class ArgParseException(message: String) : Exception(message)

packages/SystemUI/src/com/android/systemui/dump/DumpManager.kt

+43 −234

Original line number	Diff line number	Diff line
		@@ -16,15 +16,8 @@

		package com.android.systemui.dump

		import android.content.Context
		import android.os.SystemClock
		import android.os.Trace
		import android.util.ArrayMap
		import com.android.systemui.Dumpable
		import com.android.systemui.R
		import com.android.systemui.dump.DumpManager.Companion.PRIORITY_ARG_CRITICAL
		import com.android.systemui.dump.DumpManager.Companion.PRIORITY_ARG_HIGH
		import com.android.systemui.dump.DumpManager.Companion.PRIORITY_ARG_NORMAL
		import com.android.systemui.log.LogBuffer
		import java.io.FileDescriptor
		import java.io.PrintWriter
		@@ -32,58 +25,16 @@ import javax.inject.Inject
		import javax.inject.Singleton

		/**
		* Oversees SystemUI's output during bug reports (and dumpsys in general)
		* Maintains a registry of things that should be dumped when a bug report is taken
		*
		* When a bug report is taken, SystemUI dumps various diagnostic information that we hope will be
		* useful for the eventual readers of the bug report. Code that wishes to participate in this dump
		* should register itself here.
		*
		* Dump output is split into two sections, CRITICAL and NORMAL. All dumpables registered via
		* [registerDumpable] appear in the CRITICAL section, while all [LogBuffer]s appear in the NORMAL
		* section (due to their length).
		*
		* The CRITICAL and NORMAL sections can be found within a bug report by searching for
		* "SERVICE com.android.systemui/.SystemUIService" and
		* "SERVICE com.android.systemui/.dump.SystemUIAuxiliaryDumpService", respectively.
		*
		* Finally, some or all of the dump can be triggered on-demand via adb (see below).
		*
		* ```
		* # For the following, let <invocation> be:
		* $ adb shell dumpsys activity service com.android.systemui/.SystemUIService
		*
		* # To dump specific target(s), specify one or more registered names:
		* $ <invocation> NotifCollection
		* $ <invocation> StatusBar FalsingManager BootCompleteCacheImpl
		*
		* # Log buffers can be dumped in the same way (and can even be mixed in with other dump targets,
		* # although it's not clear why one would want such a thing):
		* $ <invocation> NotifLog
		* $ <invocation> StatusBar NotifLog BootCompleteCacheImpl
		*
		* # If passing -t or --tail, shows only the last N lines of any log buffers:
		* $ <invocation> NotifLog --tail 100
		*
		* # Dump targets are matched using String.endsWith(), so dumpables that register using their
		* # fully-qualified class name can still be dumped using their short name:
		* $ <invocation> com.android.keyguard.KeyguardUpdateMonitor
		* $ <invocation> keyguard.KeyguardUpdateMonitor
		* $ <invocation> KeyguardUpdateMonitor
		*
		* # To dump all dumpables or all buffers:
		* $ <invocation> dumpables
		* $ <invocation> buffers
		*
		* Finally, the following will simulate what we dump during the CRITICAL and NORMAL sections of a
		* bug report:
		* $ <invocation> bugreport-critical
		* $ <invocation> bugreport-normal
		* ```
		* See [DumpHandler] for more information on how and when this information is dumped.
		*/
		@Singleton
		class DumpManager @Inject constructor(
		private val context: Context
		) {
		class DumpManager @Inject constructor() {
		private val dumpables: MutableMap<String, RegisteredDumpable<Dumpable>> = ArrayMap()
		private val buffers: MutableMap<String, RegisteredDumpable<LogBuffer>> = ArrayMap()

		@@ -97,10 +48,6 @@ class DumpManager @Inject constructor(
		*/
		@Synchronized
		fun registerDumpable(name: String, module: Dumpable) {
		if (RESERVED_NAMES.contains(name)) {
		throw IllegalArgumentException("'$name' is reserved")
		}

		if (!canAssignToNameLocked(name, module)) {
		throw IllegalArgumentException("'$name' is already registered")
		}
		@@ -128,76 +75,16 @@ class DumpManager @Inject constructor(
		}

		/**
		* Dump the diagnostics! Behavior can be controlled via [args].
		* Dumps the first dumpable or buffer whose registered name ends with [target]
		*/
		@Synchronized
		fun dump(fd: FileDescriptor, pw: PrintWriter, args: Array<String>) {
		Trace.beginSection("DumpManager#dump()")
		val start = SystemClock.uptimeMillis()

		val parsedArgs = try {
		parseArgs(args)
		} catch (e: ArgParseException) {
		pw.println(e.message)
		return
		}

		when (parsedArgs.dumpPriority) {
		PRIORITY_ARG_CRITICAL -> dumpCriticalLocked(fd, pw, parsedArgs)
		PRIORITY_ARG_NORMAL -> dumpNormalLocked(pw, parsedArgs)
		else -> dumpParameterizedLocked(fd, pw, parsedArgs)
		}

		pw.println()
		pw.println("Dump took ${SystemClock.uptimeMillis() - start}ms")
		Trace.endSection()
		}

		private fun dumpCriticalLocked(fd: FileDescriptor, pw: PrintWriter, args: ParsedArgs) {
		dumpDumpablesLocked(fd, pw, args)
		dumpConfig(pw)
		}

		private fun dumpNormalLocked(pw: PrintWriter, args: ParsedArgs) {
		dumpBuffersLocked(pw, args)
		}

		private fun dumpParameterizedLocked(fd: FileDescriptor, pw: PrintWriter, args: ParsedArgs) {
		when (args.command) {
		"bugreport-critical" -> dumpCriticalLocked(fd, pw, args)
		"bugreport-normal" -> dumpNormalLocked(pw, args)
		"dumpables" -> dumpDumpablesLocked(fd, pw, args)
		"buffers" -> dumpBuffersLocked(pw, args)
		else -> dumpTargetsLocked(args.nonFlagArgs, fd, pw, args)
		}
		}

		private fun dumpTargetsLocked(
		targets: List<String>,
		fd: FileDescriptor,
		pw: PrintWriter,
		args: ParsedArgs
		) {
		if (targets.isEmpty()) {
		pw.println("Nothing to dump :(")
		} else {
		for (target in targets) {
		dumpTarget(target, fd, pw, args)
		}
		}
		}

		private fun dumpTarget(
		fun dumpTarget(
		target: String,
		fd: FileDescriptor,
		pw: PrintWriter,
		args: ParsedArgs
		args: Array<String>,
		tailLength: Int
		) {
		if (target == "config") {
		dumpConfig(pw)
		return
		}

		for (dumpable in dumpables.values) {
		if (dumpable.name.endsWith(target)) {
		dumpDumpable(dumpable, fd, pw, args)
		@@ -207,21 +94,49 @@ class DumpManager @Inject constructor(

		for (buffer in buffers.values) {
		if (buffer.name.endsWith(target)) {
		dumpBuffer(buffer, pw, args)
		dumpBuffer(buffer, pw, tailLength)
		return
		}
		}
		}

		private fun dumpDumpablesLocked(fd: FileDescriptor, pw: PrintWriter, args: ParsedArgs) {
		/**
		* Dumps all registered dumpables to [pw]
		*/
		@Synchronized
		fun dumpDumpables(fd: FileDescriptor, pw: PrintWriter, args: Array<String>) {
		for (module in dumpables.values) {
		dumpDumpable(module, fd, pw, args)
		}
		}

		private fun dumpBuffersLocked(pw: PrintWriter, args: ParsedArgs) {
		/**
		* Dumps the names of all registered dumpables (one per line)
		*/
		@Synchronized
		fun listDumpables(pw: PrintWriter) {
		for (module in dumpables.values) {
		pw.println(module.name)
		}
		}

		/**
		* Dumps all registered [LogBuffer]s to [pw]
		*/
		@Synchronized
		fun dumpBuffers(pw: PrintWriter, tailLength: Int) {
		for (buffer in buffers.values) {
		dumpBuffer(buffer, pw, tailLength)
		}
		}

		/**
		* Dumps the names of all registered buffers (one per line)
		*/
		@Synchronized
		fun listBuffers(pw: PrintWriter) {
		for (buffer in buffers.values) {
		dumpBuffer(buffer, pw, args)
		pw.println(buffer.name)
		}
		}

		@@ -229,139 +144,33 @@ class DumpManager @Inject constructor(
		dumpable: RegisteredDumpable<Dumpable>,
		fd: FileDescriptor,
		pw: PrintWriter,
		args: ParsedArgs
		args: Array<String>
		) {
		pw.println()
		pw.println("${dumpable.name}:")
		pw.println("----------------------------------------------------------------------------")
		dumpable.dumpable.dump(fd, pw, args.rawArgs)
		dumpable.dumpable.dump(fd, pw, args)
		}

		private fun dumpBuffer(
		buffer: RegisteredDumpable<LogBuffer>,
		pw: PrintWriter,
		args: ParsedArgs
		tailLength: Int
		) {
		pw.println()
		pw.println()
		pw.println("BUFFER ${buffer.name}:")
		pw.println("============================================================================")
		buffer.dumpable.dump(pw, args.tailLength)
		}

		private fun dumpConfig(pw: PrintWriter) {
		pw.println("SystemUiServiceComponents configuration:")
		pw.print("vendor component: ")
		pw.println(context.resources.getString(R.string.config_systemUIVendorServiceComponent))
		dumpServiceList(pw, "global", R.array.config_systemUIServiceComponents)
		dumpServiceList(pw, "per-user", R.array.config_systemUIServiceComponentsPerUser)
		}

		private fun dumpServiceList(pw: PrintWriter, type: String, resId: Int) {
		val services: Array<String>? = context.resources.getStringArray(resId)
		pw.print(type)
		pw.print(": ")
		if (services == null) {
		pw.println("N/A")
		return
		}
		pw.print(services.size)
		pw.println(" services")
		for (i in services.indices) {
		pw.print(" ")
		pw.print(i)
		pw.print(": ")
		pw.println(services[i])
		}
		}

		private fun parseArgs(args: Array<String>): ParsedArgs {
		val mutArgs = args.toMutableList()
		val pArgs = ParsedArgs(args, mutArgs)

		val iterator = mutArgs.iterator()
		while (iterator.hasNext()) {
		val arg = iterator.next()
		if (arg.startsWith("-")) {
		iterator.remove()
		when (arg) {
		PRIORITY_ARG -> {
		pArgs.dumpPriority = readArgument(iterator, PRIORITY_ARG) {
		if (PRIORITY_OPTIONS.contains(it)) {
		it
		} else {
		throw IllegalArgumentException()
		}
		}
		}
		"-t", "--tail" -> {
		pArgs.tailLength = readArgument(iterator, "--tail") {
		it.toInt()
		}
		}
		else -> {
		throw ArgParseException("Unknown flag: $arg")
		}
		}
		}
		}

		if (mutArgs.isNotEmpty() && COMMANDS.contains(mutArgs[0])) {
		pArgs.command = mutArgs.removeAt(0)
		}

		return pArgs
		}

		private fun <T> readArgument(
		iterator: MutableIterator<String>,
		flag: String,
		parser: (arg: String) -> T
		): T {
		if (!iterator.hasNext()) {
		throw ArgParseException("Missing argument for $flag")
		}
		val value = iterator.next()

		return try {
		parser(value).also { iterator.remove() }
		} catch (e: Exception) {
		throw ArgParseException("Invalid argument '$value' for flag $flag")
		}
		buffer.dumpable.dump(pw, tailLength)
		}

		private fun canAssignToNameLocked(name: String, newDumpable: Any): Boolean {
		val existingDumpable = dumpables[name]?.dumpable ?: buffers[name]?.dumpable
		return existingDumpable == null \|\| newDumpable == existingDumpable
		}

		companion object {
		const val PRIORITY_ARG = "--dump-priority"
		const val PRIORITY_ARG_CRITICAL = "CRITICAL"
		const val PRIORITY_ARG_HIGH = "HIGH"
		const val PRIORITY_ARG_NORMAL = "NORMAL"
		}
		}

		private val PRIORITY_OPTIONS =
		arrayOf(PRIORITY_ARG_CRITICAL, PRIORITY_ARG_HIGH, PRIORITY_ARG_NORMAL)

		private val COMMANDS = arrayOf("bugreport-critical", "bugreport-normal", "buffers", "dumpables")

		private val RESERVED_NAMES = arrayOf("config", *COMMANDS)

		private data class RegisteredDumpable<T>(
		val name: String,
		val dumpable: T
		)

		private class ParsedArgs(
		val rawArgs: Array<String>,
		val nonFlagArgs: List<String>
		) {
		var dumpPriority: String? = null
		var tailLength: Int = 0
		var command: String? = null
		}

		class ArgParseException(message: String) : Exception(message)
		No newline at end of file

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packages/SystemUI/src/com/android/systemui/dump/SystemUIAuxiliaryDumpService.java

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