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.scenarios.sampling.SP05; 25 26 import java.io.PrintStream; 27 28 import nsk.share.*; 29 import nsk.share.jvmti.*; 30 31 public class sp05t003 extends DebugeeClass { 32 33 // load native library if required 34 static { 35 System.loadLibrary("sp05t003"); 36 } 37 38 // run test from command line main(String argv[])39 public static void main(String argv[]) { 40 argv = nsk.share.jvmti.JVMTITest.commonInit(argv); 41 42 // JCK-compatible exit 43 System.exit(run(argv, System.out) + Consts.JCK_STATUS_BASE); 44 } 45 46 // run test from JCK-compatible environment run(String argv[], PrintStream out)47 public static int run(String argv[], PrintStream out) { 48 return new sp05t003().runIt(argv, out); 49 } 50 51 /* =================================================================== */ 52 53 // scaffold objects 54 ArgumentHandler argHandler = null; 55 Log log = null; 56 int status = Consts.TEST_PASSED; 57 58 // monitors for threads synchronization 59 static Object endingMonitor = new Object(); 60 61 // tested threads list 62 static sp05t003Thread threads[] = null; 63 64 // run debuggee runIt(String argv[], PrintStream out)65 public int runIt(String argv[], PrintStream out) { 66 argHandler = new ArgumentHandler(argv); 67 log = new Log(out, argHandler); 68 69 // create threads list 70 threads = new sp05t003Thread[] { 71 new sp05t003ThreadRunningJava(), 72 new sp05t003ThreadRunningNative() 73 }; 74 75 // sync for prepare data 76 log.display("Sync: threads created"); 77 status = checkStatus(status); 78 79 // run threads 80 try { 81 82 // start threads 83 log.display("Starting tested threads"); 84 for (int i = 0; i < threads.length; i++) { 85 threads[i].start(); 86 } 87 88 // check threads started 89 for (int i = 0; i < threads.length; i++) { 90 if (!threads[i].checkStarted()) { 91 throw new Failure("Unable to prepare thread #" + i + ": " + threads[i]); 92 } 93 } 94 95 // sync after thread started 96 log.display("Sync: threads started"); 97 status = checkStatus(status); 98 99 // let threads to finish 100 } finally { 101 for (int i = 0; i < threads.length; i++) { 102 threads[i].letFinish(); 103 } 104 } 105 106 // wait for all threads to finish 107 log.display("Finishing tested threads"); 108 try { 109 for (int i = 0; i < threads.length; i++) { 110 threads[i].join(); 111 } 112 } catch (InterruptedException e) { 113 throw new Failure(e); 114 } 115 116 // sync after thread finished 117 log.display("Sync: threads finished"); 118 status = checkStatus(status); 119 120 return status; 121 } 122 } 123 124 /* =================================================================== */ 125 126 // basic class for tested threads 127 abstract class sp05t003Thread extends Thread { 128 // check if thread started checkStarted()129 public abstract boolean checkStarted(); 130 131 // let thread to finish letFinish()132 public abstract void letFinish(); 133 } 134 135 /* =================================================================== */ 136 137 class sp05t003ThreadRunningJava extends sp05t003Thread { 138 private volatile boolean hasStarted = false; 139 private volatile boolean shouldFinish = false; 140 run()141 public void run() { 142 hasStarted = true; 143 144 // run in a loop 145 int i = 0; 146 int n = 1000; 147 while (!shouldFinish) { 148 if (n <= 0) { 149 n = 1000; 150 } 151 if (i > n) { 152 i = 0; 153 n = n - 1; 154 } 155 i = i + 1; 156 } 157 } 158 checkStarted()159 public boolean checkStarted() { 160 try { 161 while(!hasStarted) { 162 sleep(1000); 163 } 164 } catch (InterruptedException e) { 165 throw new Failure("Interrupted while waiting for thread started:\n\t" + e); 166 } 167 return hasStarted; 168 } 169 letFinish()170 public void letFinish() { 171 shouldFinish = true; 172 } 173 } 174 175 class sp05t003ThreadRunningNative extends sp05t003Thread { run()176 public native void run(); checkStarted()177 public native boolean checkStarted(); letFinish()178 public native void letFinish(); 179 } 180