1 /* 2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 4929401 27 * @summary ThreadMXBean.getThreadCpuTime() throws IllegalArgumentException 28 * if id <= 0 and returns -1 if the thread doesn't exist. 29 * @author Mandy Chung 30 * 31 * @modules java.management 32 * @run main InvalidThreadID 33 */ 34 35 import java.lang.management.ThreadMXBean; 36 import java.lang.management.ManagementFactory; 37 38 public class InvalidThreadID { 39 40 public static void main(String argv[]) { 41 42 ThreadMXBean mbean = ManagementFactory.getThreadMXBean(); 43 int cnt = 0; 44 long [] idArr = {0, -1, -2, (Long.MIN_VALUE + 1), Long.MIN_VALUE}; 45 46 if (mbean.isThreadCpuTimeSupported()) { 47 for (int i = 0; i < idArr.length; i++) { 48 try { 49 mbean.getThreadCpuTime(idArr[i]); 50 System.out.println("Test failed. IllegalArgumentException" + 51 " expected for ID = " + idArr[i]); 52 } catch (IllegalArgumentException iae) { 53 cnt++; 54 } 55 } 56 if (cnt != idArr.length) { 57 throw new RuntimeException("Unexpected number of " + 58 "IllegalArgumentException = " + cnt + 59 " expected = " + idArr.length); 60 } 61 62 // CPU time for a non-existence thread 63 long time = mbean.getThreadCpuTime(999999); 64 if (time < 0 && time != -1) { 65 throw new RuntimeException("Cpu time for thread 999999" + 66 " is invalid = " + time + " expected to be -1."); 67 } 68 } 69 System.out.println("Test passed."); 70 } 71 }