1 /* 2 * Copyright (c) 2017, 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 /** 26 * @test 27 * @summary Verifies the JVMTI GetOwnedMonitorInfo API 28 * @modules jdk.jdi 29 * @compile GetOwnedMonitorInfoTest.java 30 * @run main/othervm/native -agentlib:GetOwnedMonitorInfoTest GetOwnedMonitorInfoTest 31 */ 32 33 import java.io.PrintStream; 34 35 public class GetOwnedMonitorInfoTest implements Runnable { 36 37 static { 38 try { 39 System.loadLibrary("GetOwnedMonitorInfoTest"); 40 } catch (UnsatisfiedLinkError ule) { 41 System.err.println("Could not load GetOwnedMonitorInfoTest library"); 42 System.err.println("java.library.path: " 43 + System.getProperty("java.library.path")); 44 throw ule; 45 } 46 } 47 48 native static int check(); 49 native static boolean hasEventPosted(); 50 51 public void run() { 52 String name = Thread.currentThread().getName(); 53 try { 54 synchronized (GetOwnedMonitorInfoTest.class) { 55 System.out.println("Thread in sync section: " + name); 56 } 57 } catch (Exception e) { 58 e.printStackTrace(); 59 } 60 } 61 62 public static void main(String[] args) throws Exception { 63 Thread t1 = new Thread(new GetOwnedMonitorInfoTest()); 64 65 // Make sure t1 contends on the monitor. 66 synchronized (GetOwnedMonitorInfoTest.class) { 67 System.out.println("Main starting worker thread."); 68 t1.start(); 69 70 // Wait for the MonitorContendedEnter event 71 while (!hasEventPosted()) { 72 System.out.println("Main waiting for event."); 73 Thread.sleep(100); 74 } 75 } 76 77 t1.join(); 78 79 int status = check(); 80 if (status != 0) { 81 throw new RuntimeException("FAILED status returned from the agent"); 82 } 83 } 84 }