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annotate test/compiler/6772683/InterruptedTest.java @ 14649:f6301b007a16

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6498581: ThreadInterruptTest3 produces wrong output on Windows Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set. Reviewed-by: acorn, kvn Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com
author minqi
date Wed, 26 Feb 2014 15:20:41 -0800
parents c18cbe5936b8
children
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1 /*
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2 * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 /*
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26 * @test
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27 * @bug 6772683
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28 * @summary Thread.isInterrupted() fails to return true on multiprocessor PC
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29 * @run main/othervm InterruptedTest
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30 */
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31
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32 public class InterruptedTest {
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33
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34 public static void main(String[] args) throws Exception {
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35 Thread workerThread = new Thread("worker") {
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36 public void run() {
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37 System.out.println("Worker thread: running...");
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38 while (!Thread.currentThread().isInterrupted()) {
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39 }
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40 System.out.println("Worker thread: bye");
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41 }
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42 };
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43 System.out.println("Main thread: starts a worker thread...");
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44 workerThread.start();
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45 System.out.println("Main thread: waits at most 5s for the worker thread to die...");
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46 workerThread.join(5000); // Wait 5 sec to let run() method to be compiled
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47 int ntries = 0;
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48 while (workerThread.isAlive() && ntries < 5) {
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49 System.out.println("Main thread: interrupts the worker thread...");
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50 workerThread.interrupt();
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51 if (workerThread.isInterrupted()) {
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52 System.out.println("Main thread: worker thread is interrupted");
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53 }
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54 ntries++;
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55 System.out.println("Main thread: waits for the worker thread to die...");
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56 workerThread.join(1000); // Wait 1 sec and try again
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57 }
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58 if (ntries == 5) {
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59 System.out.println("Main thread: the worker thread dod not die");
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60 System.exit(97);
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61 }
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62 System.out.println("Main thread: bye");
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63 }
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64
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65 }