| /* |
| * Copyright (c) 2008, 2016, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 6772683 |
| * @summary Thread.isInterrupted() fails to return true on multiprocessor PC |
| * |
| * @run main/othervm compiler.c2.InterruptedTest 100 |
| */ |
| |
| package compiler.c2; |
| |
| public class InterruptedTest { |
| |
| public static void main(String[] args) throws Exception { |
| /* The value of the threshold determines for how many seconds |
| * the main thread must wait for the worker thread. On highly |
| * loaded systems it can take a while until the worker thread |
| * obtains CPU time and is able to check if it was interrupted |
| * by the main thread. The higher the threshold the likelier |
| * the worker thread can check if it was interrupted (that is |
| * required for successul test execution). |
| */ |
| int threshold = 100; |
| |
| if (args.length != 1) { |
| System.out.println("Incorrect number of arguments"); |
| System.exit(1); |
| } |
| |
| try { |
| threshold = Integer.parseInt(args[0]); |
| } catch (NumberFormatException e) { |
| System.out.println("Invalid argument format"); |
| System.exit(1); |
| } |
| |
| if (threshold < 1) { |
| System.out.println("Threshold must be at least 1"); |
| System.exit(1); |
| } |
| |
| Thread workerThread = new Thread("worker") { |
| public void run() { |
| System.out.println("Worker thread: running..."); |
| while (!Thread.currentThread().isInterrupted()) { |
| } |
| System.out.println("Worker thread: bye"); |
| } |
| }; |
| System.out.println("Main thread: starts a worker thread..."); |
| workerThread.start(); |
| System.out.println("Main thread: waits 5 seconds after starting the worker thread"); |
| workerThread.join(5000); // Wait 5 sec to let run() method to be compiled |
| |
| int ntries = 0; |
| while (workerThread.isAlive() && ntries < threshold) { |
| System.out.println("Main thread: interrupts the worker thread..."); |
| workerThread.interrupt(); |
| if (workerThread.isInterrupted()) { |
| System.out.println("Main thread: worker thread is interrupted"); |
| } |
| ntries++; |
| System.out.println("Main thread: waits 1 second for the worker thread to die..."); |
| workerThread.join(1000); // Wait 1 sec and try again |
| } |
| |
| if (ntries == threshold) { |
| System.out.println("Main thread: the worker thread did not die after " + |
| ntries + " seconds have elapsed"); |
| System.exit(97); |
| } |
| |
| System.out.println("Main thread: bye"); |
| } |
| } |