1 /* 2 * Copyright (C) 2006 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 /** 18 * This causes most VMs to lock up. 19 * 20 * Interrupting threads in class initialization should NOT work. 21 */ 22 public class Main { 23 public static boolean aInitialized = false; 24 public static boolean bInitialized = false; 25 26 static public void main(String[] args) { 27 Thread thread1, thread2; 28 29 System.out.println("Deadlock test starting."); 30 thread1 = new Thread() { public void run() { new A(); } }; 31 thread2 = new Thread() { public void run() { new B(); } }; 32 thread1.start(); 33 // Give thread1 a chance to start before starting thread2. 34 try { Thread.sleep(1000); } catch (InterruptedException ie) { } 35 thread2.start(); 36 37 try { Thread.sleep(6000); } catch (InterruptedException ie) { } 38 39 System.out.println("Deadlock test interrupting threads."); 40 thread1.interrupt(); 41 thread2.interrupt(); 42 System.out.println("Deadlock test main thread bailing."); 43 System.out.println("A initialized: " + aInitialized); 44 System.out.println("B initialized: " + bInitialized); 45 System.exit(0); 46 } 47 } 48 49 class A { 50 static { 51 System.out.println("A initializing..."); 52 try { Thread.sleep(3000); } catch (InterruptedException ie) { } 53 new B(); 54 System.out.println("A initialized"); 55 Main.aInitialized = true; 56 } 57 } 58 59 class B { 60 static { 61 System.out.println("B initializing..."); 62 try { Thread.sleep(3000); } catch (InterruptedException ie) { } 63 new A(); 64 System.out.println("B initialized"); 65 Main.bInitialized = true; 66 } 67 } 68
