2617d1d179
Update copyright year for files that have been modified in 2008 Reviewed-by: ohair, tbell
90 lines
3.7 KiB
Java
90 lines
3.7 KiB
Java
/*
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* Copyright 2005-2008 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* @test
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* @bug 6316155 6595669
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* @summary Test concurrent offer vs. remove
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* @author Martin Buchholz
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*/
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import java.util.concurrent.*;
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public class OfferRemoveLoops {
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private static void realMain(String[] args) throws Throwable {
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testQueue(new LinkedBlockingQueue<String>(10));
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testQueue(new LinkedBlockingQueue<String>());
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testQueue(new LinkedBlockingDeque<String>(10));
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testQueue(new LinkedBlockingDeque<String>());
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testQueue(new ArrayBlockingQueue<String>(10));
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testQueue(new PriorityBlockingQueue<String>(10));
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}
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private abstract static class ControlledThread extends Thread {
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abstract protected void realRun();
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public void run() {
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try { realRun(); } catch (Throwable t) { unexpected(t); }
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}
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}
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private static void testQueue(final BlockingQueue<String> q) throws Throwable {
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System.out.println(q.getClass());
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final int count = 10000;
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final long quittingTime = System.nanoTime() + 1L * 1000L * 1000L * 1000L;
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Thread t1 = new ControlledThread() {
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protected void realRun() {
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for (int i = 0, j = 0; i < count; i++)
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while (! q.remove(String.valueOf(i))
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&& System.nanoTime() - quittingTime < 0)
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Thread.yield();}};
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Thread t2 = new ControlledThread() {
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protected void realRun() {
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for (int i = 0, j = 0; i < count; i++)
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while (! q.offer(String.valueOf(i))
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&& System.nanoTime() - quittingTime < 0)
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Thread.yield();}};
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t1.setDaemon(true); t2.setDaemon(true);
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t1.start(); t2.start();
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t1.join(10000); t2.join(10000);
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check(! t1.isAlive());
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check(! t2.isAlive());
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}
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//--------------------- Infrastructure ---------------------------
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static volatile int passed = 0, failed = 0;
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static void pass() { passed++; }
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static void fail() { failed++; Thread.dumpStack(); }
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static void unexpected(Throwable t) { failed++; t.printStackTrace(); }
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static void check(boolean cond) { if (cond) pass(); else fail(); }
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static void equal(Object x, Object y) {
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if (x == null ? y == null : x.equals(y)) pass();
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else {System.out.println(x + " not equal to " + y); fail(); }}
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public static void main(String[] args) throws Throwable {
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try { realMain(args); } catch (Throwable t) { unexpected(t); }
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System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
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if (failed > 0) throw new Exception("Some tests failed");
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}
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}
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