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 public class ThreadListTraces { doTest()20 public static void doTest() throws Exception { 21 System.out.println("########################################"); 22 System.out.println("### Other select threads (suspended) ###"); 23 System.out.println("########################################"); 24 25 final int N = 10; 26 27 final ControlData data = new ControlData(N); 28 data.waitFor = new Object(); 29 30 Thread threads[] = new Thread[N]; 31 32 Thread list[] = new Thread[N/2 + 1]; 33 34 for (int i = 0; i < N; i++) { 35 Thread t = new Thread("ThreadListTraces Thread " + i) { 36 public void run() { 37 Recurse.foo(4, 0, 0, data); 38 } 39 }; 40 t.start(); 41 threads[i] = t; 42 if (i % 2 == 0) { 43 list[i/2] = t; 44 } 45 } 46 list[list.length - 1] = Thread.currentThread(); 47 48 data.reached.await(); 49 Thread.yield(); 50 Thread.sleep(500); // A little bit of time... 51 52 printList(list, 0); 53 54 printList(list, 7); 55 56 printList(list, 25); 57 58 // Let the thread make progress and die. 59 synchronized(data.waitFor) { 60 data.waitFor.notifyAll(); 61 } 62 for (int i = 0; i < N; i++) { 63 threads[i].join(); 64 } 65 } 66 printList(Thread[] threads, int max)67 public static void printList(Thread[] threads, int max) { 68 PrintThread.printAll(getThreadListStackTraces(threads, max)); 69 } 70 71 // Similar to getAllStackTraces, but restricted to the given threads. getThreadListStackTraces(Thread threads[], int max)72 public static native Object[][] getThreadListStackTraces(Thread threads[], int max); 73 } 74