1 /* 2 * Copyright (C) 2008 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 /** 19 * Exercise monitors. 20 */ 21 public class Monitor { 22 public static int mVal = 0; 23 24 public synchronized void subTest() { 25 Object obj = new Object(); 26 synchronized (obj) { 27 mVal++; 28 obj = null; // does NOT cause a failure on exit 29 Main.assertTrue(obj == null); 30 } 31 } 32 33 34 public static void run() { 35 System.out.println("Monitor.run"); 36 37 Object obj = null; 38 39 try { 40 synchronized (obj) { 41 mVal++; 42 } 43 Main.assertTrue(false); 44 } catch (NullPointerException npe) { 45 /* expected */ 46 } 47 48 obj = new Object(); 49 synchronized (obj) { 50 mVal++; 51 } 52 53 new Monitor().subTest(); 54 55 Main.assertTrue(mVal == 2); 56 } 57 } 58
