1 /* 2 * Copyright (c) 2003, 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.unit.functions; 25 26 import java.io.PrintStream; 27 28 public class rawmonitor { 29 30 final static int JCK_STATUS_BASE = 95; 31 final static int THREADS_LIMIT = 1000; 32 final static String NAME_PREFIX = "rawmonitor-"; 33 static int fail_id = 0; 34 35 static { 36 try { 37 System.loadLibrary("rawmonitor"); 38 } catch (UnsatisfiedLinkError ule) { 39 System.err.println("Could not load rawmonitor library"); 40 System.err.println("java.library.path:" 41 + System.getProperty("java.library.path")); 42 throw ule; 43 } 44 } 45 GetResult()46 native static int GetResult(); CreateRawMonitor(int i)47 native static void CreateRawMonitor(int i); RawMonitorEnter(int i)48 native static void RawMonitorEnter(int i); RawMonitorExit(int i)49 native static void RawMonitorExit(int i); RawMonitorWait(int i)50 native static void RawMonitorWait(int i); 51 52 53 static volatile int thrCount = 0; 54 main(String args[])55 public static void main(String args[]) { 56 args = nsk.share.jvmti.JVMTITest.commonInit(args); 57 58 // produce JCK-like exit status. 59 System.exit(run(args, System.out) + JCK_STATUS_BASE); 60 } 61 run(String args[], PrintStream out)62 public static int run(String args[], PrintStream out) { 63 CreateRawMonitor(1); 64 65 TestThread t = new TestThread(NAME_PREFIX + thrCount); 66 t.start(); 67 68 // Just to test raw monitor during onload. 69 // Created and entered in onload phase. Release it now. 70 RawMonitorExit(0); 71 72 try { 73 t.join(); 74 } catch (InterruptedException e) { 75 throw new Error("Unexpected: " + e); 76 } 77 return GetResult() + fail_id; 78 } 79 80 static class TestThread extends Thread { 81 static int counter=0; TestThread(String name)82 public TestThread(String name) { 83 super(name); 84 } run()85 public void run() { 86 thrCount++; 87 if (thrCount < THREADS_LIMIT) { 88 TestThread t = new TestThread(NAME_PREFIX + thrCount); 89 t.start(); 90 91 for (int i=0; i < 100; i++) { 92 RawMonitorEnter(0); 93 int tst = counter; 94 // System.out.print("."); 95 counter++; 96 if (counter != tst+1) { 97 System.out.println("Monitor Enter is not working"); 98 fail_id = 4; 99 } 100 101 // System.out.println(counter); 102 RawMonitorExit(0); 103 } 104 105 try { 106 t.join(); 107 } catch (InterruptedException e) { 108 throw new Error("Unexpected: " + e); 109 } 110 } 111 } 112 } 113 } 114