| /* |
| * 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.jvmti.scenarios.contention.TC03; |
| |
| import java.io.PrintStream; |
| |
| import nsk.share.*; |
| import nsk.share.jvmti.*; |
| |
| public class tc03t001 extends DebugeeClass { |
| |
| final static int WAIT_TIME = 100; |
| |
| // run test from command line |
| public static void main(String argv[]) { |
| argv = nsk.share.jvmti.JVMTITest.commonInit(argv); |
| |
| // JCK-compatible exit |
| System.exit(run(argv, System.out) + Consts.JCK_STATUS_BASE); |
| } |
| |
| // run test from JCK-compatible environment |
| public static int run(String argv[], PrintStream out) { |
| return new tc03t001().runIt(argv, out); |
| } |
| |
| /* =================================================================== */ |
| |
| // scaffold objects |
| ArgumentHandler argHandler = null; |
| static Log log = null; |
| int status = Consts.TEST_PASSED; |
| long timeout = 0; |
| |
| // run debuggee |
| public int runIt(String argv[], PrintStream out) { |
| argHandler = new ArgumentHandler(argv); |
| log = new Log(out, argHandler); |
| timeout = argHandler.getWaitTime() * 60 * 1000; |
| log.display("Timeout = " + timeout + " msc."); |
| long MAX_LOOP = timeout / WAIT_TIME; |
| |
| String A = "A"; |
| String B = "B"; |
| tc03t001Thread threadAB = new tc03t001Thread(A, B); |
| tc03t001Thread threadBA = new tc03t001Thread(B, A); |
| |
| threadAB.start(); |
| threadBA.start(); |
| |
| int v1 = 0; |
| int v2 = 0; |
| int v3 = 0; |
| int v4 = 0; |
| int old_v1 = 0; |
| int old_v2 = 0; |
| int old_v3 = 0; |
| int old_v4 = 0; |
| |
| for (long i = 0; i < MAX_LOOP; ++i) { |
| |
| v1 = threadAB.getLock1Counter(); |
| v2 = threadAB.getLock2Counter(); |
| v3 = threadBA.getLock1Counter(); |
| v4 = threadBA.getLock2Counter(); |
| |
| log.display("Iteration " + i); |
| log.display(" threadAB: lock1Counter = " + v1 + |
| ", lock2Counter = " + v2); |
| log.display(" threadBA: lock1Counter = " + v3 + |
| ", lock2Counter = " + v4); |
| |
| // break loop if threads are making no more progress |
| if ((v1 + v2 + v3 + v4 > 0) |
| && (v1 == old_v1) |
| && (v2 == old_v2) |
| && (v3 == old_v3) |
| && (v4 == old_v4)) { |
| return checkStatus(status); |
| } else { |
| old_v1 = v1; |
| old_v2 = v2; |
| old_v3 = v3; |
| old_v4 = v4; |
| } |
| |
| // wait a bit before checking again |
| try { |
| Thread.sleep(WAIT_TIME); |
| Thread.sleep(WAIT_TIME); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| |
| } |
| |
| log.display("Debugee timed out waiting deadlock"); |
| return status; |
| } |
| } |
| |
| /* =================================================================== */ |
| |
| class tc03t001Thread extends Thread { |
| |
| Object lock1; |
| Object lock2; |
| int lock1Counter = 0; |
| int lock2Counter = 0; |
| |
| public tc03t001Thread(Object o1, Object o2) { |
| super("Debuggee Thread " + o1 + o2); |
| lock1 = o1; |
| lock2 = o2; |
| } |
| |
| public void run() { |
| tc03t001.log.display("Started " + this); |
| while (true) { |
| synchronized (lock1) { |
| ++lock1Counter; |
| synchronized (lock2) { |
| ++lock2Counter; |
| } |
| } |
| } |
| } |
| |
| public int getLock1Counter() { |
| return lock1Counter; |
| } |
| |
| public int getLock2Counter() { |
| return lock2Counter; |
| } |
| } |