1 /* <lambda>null2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.example.tracing.demo.experiments 17 18 import com.android.app.tracing.coroutines.launchTraced 19 import com.android.app.tracing.coroutines.traceCoroutine 20 import com.android.app.tracing.coroutines.withContextTraced 21 import com.example.tracing.demo.FixedPool 22 import com.example.tracing.demo.FixedThread1 23 import com.example.tracing.demo.FixedThread2 24 import com.example.tracing.demo.FixedThread3 25 import com.example.tracing.demo.FixedThread4 26 import javax.inject.Inject 27 import javax.inject.Singleton 28 import kotlinx.coroutines.CoroutineDispatcher 29 import kotlinx.coroutines.coroutineScope 30 import kotlinx.coroutines.delay 31 32 @Singleton 33 class LaunchStressTest 34 @Inject 35 constructor( 36 @FixedThread1 private var dispatcher1: CoroutineDispatcher, 37 @FixedThread2 private var dispatcher2: CoroutineDispatcher, 38 @FixedThread3 private val dispatcher3: CoroutineDispatcher, 39 @FixedThread4 private val dispatcher4: CoroutineDispatcher, 40 @FixedPool private var fixedPoolDispatcher: CoroutineDispatcher, 41 ) : TracedExperiment() { 42 43 override val description: String = "Simultaneous launch{} calls on different threads" 44 45 override suspend fun runExperiment(): Unit = coroutineScope { 46 repeat(16) { n -> 47 launchTraced("launch#$n", fixedPoolDispatcher) { 48 withContextTraced("context-switch-pool", fixedPoolDispatcher) { 49 withContextTraced("context-switch-1", dispatcher1) { 50 traceCoroutine("delay#$n:1") { delay(5) } 51 } 52 traceCoroutine("delay#$n:2") { delay(5) } 53 withContextTraced("context-switch-2", dispatcher2) { 54 traceCoroutine("delay#$n:3") { delay(5) } 55 } 56 } 57 withContextTraced("context-switch-3", dispatcher3) { 58 traceCoroutine("delay#$n:3") { 59 traceCoroutine("delay#$n:4") { delay(5) } 60 withContextTraced("context-switch-4", dispatcher4) { 61 traceCoroutine("delay#$n:5") { delay(5) } 62 } 63 } 64 } 65 } 66 } 67 } 68 } 69