1 /* 2 * Copyright (c) 2004, 2018, 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 package nsk.jvmti.GetThreadState; 25 26 import java.io.PrintStream; 27 28 public class thrstat001 { 29 30 public static final int STATUS_RUNNING = 0; 31 public static final int STATUS_MONITOR = 1; 32 public static final int STATUS_WAIT = 2; 33 checkStatus(int statInd)34 native static void checkStatus(int statInd); getRes()35 native static int getRes(); 36 main(String[] args)37 public static void main(String[] args) { 38 args = nsk.share.jvmti.JVMTITest.commonInit(args); 39 40 System.exit(run(args, System.out) + 95/*STATUS_TEMP*/); 41 } 42 run(String argv[], PrintStream ref)43 public static int run(String argv[], PrintStream ref) { 44 thrstat001 t = new thrstat001(); 45 t.meth(); 46 return getRes(); 47 } 48 49 // barriers for testing thread status values 50 public static Lock startingMonitor = new Lock(); 51 public static Object blockingMonitor = new Object(); 52 public static Lock endingMonitor = new Lock(); 53 meth()54 void meth() { 55 thrstat001a thr = new thrstat001a("thr1"); 56 57 synchronized (blockingMonitor) { 58 synchronized (startingMonitor) { 59 startingMonitor.val = 0; 60 thr.start(); 61 while (startingMonitor.val == 0) { 62 try { 63 startingMonitor.wait(); 64 } catch (InterruptedException e) { 65 throw new Error("Unexpected: " + e); 66 } 67 } 68 } 69 Thread.yield(); 70 checkStatus(STATUS_MONITOR); 71 } 72 73 synchronized (endingMonitor) { 74 checkStatus(STATUS_WAIT); 75 endingMonitor.val++; 76 endingMonitor.notify(); 77 } 78 79 try { 80 thr.join(); 81 } catch (InterruptedException e) { 82 throw new Error("Unexpected: " + e); 83 } 84 } 85 86 static class Lock { 87 public int val = 0; 88 } 89 } 90 91 class thrstat001a extends Thread { 92 thrstat001a(String name)93 public thrstat001a(String name) { 94 super(name); 95 } 96 run()97 public void run() { 98 synchronized (thrstat001.endingMonitor) { 99 thrstat001.checkStatus(thrstat001.STATUS_RUNNING); 100 synchronized (thrstat001.startingMonitor) { 101 thrstat001.startingMonitor.val++; 102 thrstat001.startingMonitor.notifyAll(); 103 } 104 105 synchronized (thrstat001.blockingMonitor) { 106 } 107 108 thrstat001.endingMonitor.val = 0; 109 while (thrstat001.endingMonitor.val == 0) { 110 try { 111 thrstat001.endingMonitor.wait(); 112 } catch (InterruptedException e) { 113 throw new Error("Unexpected: " + e); 114 } 115 } 116 } 117 } 118 } 119