diff -r 746229cc1ab0 -r cc29d7717e3a test/hotspot/jtreg/vmTestbase/nsk/monitoring/ThreadInfo/getLockName/getlockname001.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/hotspot/jtreg/vmTestbase/nsk/monitoring/ThreadInfo/getLockName/getlockname001.java Wed May 02 16:43:56 2018 -0700 @@ -0,0 +1,112 @@ +/* + * Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package nsk.monitoring.ThreadInfo.getLockName; + +import java.lang.management.*; +import java.io.*; +import nsk.share.*; + +public class getlockname001 { + private static Wicket mainEntrance = new Wicket(); + private static Object backDoor = new Object(); + private static String lock + = backDoor.getClass().getName() + "@" + + Integer.toHexString(System.identityHashCode(backDoor)); + private static boolean testFailed = false; + + public static void main(String[] argv) { + System.exit(Consts.JCK_STATUS_BASE + run(argv, System.out)); + } + + public static int run(String[] argv, PrintStream out) { + ThreadMXBean mbean = ManagementFactory.getThreadMXBean(); + ThreadInfo info; + String name; + + // Test MyThread that is going to be locked on "backDoor" object + MyThread myThread = new MyThread(out); + myThread.start(); + long id = myThread.getId(); + + // Wait for MyThread to start + mainEntrance.waitFor(); + + synchronized(backDoor) { + + // MyThread is about to be locked on "backDoor" right now + info = mbean.getThreadInfo(id, Integer.MAX_VALUE); + name = info.getLockName(); + backDoor.notify(); + + if (!lock.equals(name)) { + out.println("Failure 1."); + out.println("ThreadInfo.getLockName() returned string \"" + name + + "\" for a locked thread, but \"" + lock + + "\" expected."); + testFailed = true; + } + } + + // Test "main" that is not locked on any object + id = Thread.currentThread().getId(); + info = mbean.getThreadInfo(id, Integer.MAX_VALUE); + name = info.getLockName(); + + if (name != null) { + out.println("Failure 2."); + out.println("ThreadInfo.getLockName() returned not-null \"" + name + + "\" for a running thread."); + testFailed = true; + } + + if (testFailed) + out.println("TEST FAILED"); + return (testFailed) ? Consts.TEST_FAILED : Consts.TEST_PASSED; + } + + private static class MyThread extends Thread { + PrintStream out; + + MyThread(PrintStream out) { + this.out = out; + } + + public void run() { + synchronized(backDoor) { + + // Notify "main" thread that "backDoor" is waiting for a signal + mainEntrance.unlock(); + + // The thread is locked on "backDoor" object + try { + backDoor.wait(); + } catch (InterruptedException e) { + out.println("Unexpected exception."); + e.printStackTrace(out); + testFailed = true; + } + } + } // run() + } // MyThread +}