1 /* 2 * Copyright (C) 2016 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 17 package art; 18 19 import java.util.ArrayList; 20 import java.util.List; 21 22 public class AllTraces { 23 private final static List<Object> RETAIN = new ArrayList<Object>(); 24 doTest()25 public static void doTest() throws Exception { 26 System.out.println("################################"); 27 System.out.println("### Other threads (suspended) ###"); 28 System.out.println("################################"); 29 30 // Also create an unstarted and a dead thread. 31 RETAIN.add(new Thread("UNSTARTED")); 32 Thread deadThread = new Thread("DEAD"); 33 RETAIN.add(deadThread); 34 deadThread.start(); 35 deadThread.join(); 36 37 final int N = 10; 38 39 final ControlData data = new ControlData(N); 40 data.waitFor = new Object(); 41 42 Thread threads[] = new Thread[N]; 43 44 for (int i = 0; i < N; i++) { 45 Thread t = new Thread("AllTraces Thread " + i) { 46 public void run() { 47 Recurse.foo(4, 0, 0, data); 48 } 49 }; 50 t.start(); 51 threads[i] = t; 52 } 53 data.reached.await(); 54 Thread.yield(); 55 Thread.sleep(500); // A little bit of time... 56 57 printAll(0); 58 59 printAll(7); 60 61 printAll(25); 62 63 // Let the thread make progress and die. 64 synchronized(data.waitFor) { 65 data.waitFor.notifyAll(); 66 } 67 for (int i = 0; i < N; i++) { 68 threads[i].join(); 69 } 70 71 RETAIN.clear(); 72 } 73 printAll(int max)74 public static void printAll(int max) { 75 PrintThread.printAll(getAllStackTraces(max)); 76 } 77 78 // Get all stack traces. This will return an array with an element for each thread. The element 79 // is an array itself with the first element being the thread, and the second element a nested 80 // String array as in getStackTrace. getAllStackTraces(int max)81 public static native Object[][] getAllStackTraces(int max); 82 } 83