117 lines
4.3 KiB
Java
117 lines
4.3 KiB
Java
/*
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* Copyright (c) 2008, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 6730507
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* @summary java.util.Timer schedule delay Long.MAX_VALUE causes task to execute multiple times
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* @author Chris Hegarty
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* @author Martin Buchholz
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* @key randomness
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*/
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import java.util.Date;
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import java.util.Timer;
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import java.util.TimerTask;
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import java.util.concurrent.*;
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import java.util.concurrent.atomic.AtomicInteger;
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public class DelayOverflow
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{
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void scheduleNow(Timer timer, TimerTask task, int how) {
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switch (how) {
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case 0 :
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timer.schedule(task, new Date(), Long.MAX_VALUE);
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break;
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case 1:
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timer.schedule(task, 0L, Long.MAX_VALUE);
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break;
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case 2:
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timer.scheduleAtFixedRate(task, new Date(), Long.MAX_VALUE);
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break;
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case 3:
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timer.scheduleAtFixedRate(task, 0L, Long.MAX_VALUE);
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break;
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default:
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fail(String.valueOf(how));
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}
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}
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void sleep(long millis) {
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try { Thread.sleep(millis); }
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catch (Throwable t) { unexpected(t); }
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}
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/** Checks that scheduledExecutionTime returns a "recent" time. */
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void checkScheduledExecutionTime(TimerTask task) {
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long t = System.currentTimeMillis()
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- task.scheduledExecutionTime();
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check(t >= 0 && t < 1000 * 600);
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}
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void test(String[] args) throws Throwable {
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for (int how=0; how<4; how++) {
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final CountDownLatch done = new CountDownLatch(1);
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final AtomicInteger count = new AtomicInteger(0);
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final Timer timer = new Timer();
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final TimerTask task = new TimerTask() {
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@Override
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public void run() {
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checkScheduledExecutionTime(this);
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count.incrementAndGet();
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done.countDown();
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}};
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scheduleNow(timer, task, how);
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done.await();
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equal(count.get(), 1);
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checkScheduledExecutionTime(task);
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if (new java.util.Random().nextBoolean())
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sleep(10);
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check(task.cancel());
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timer.cancel();
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checkScheduledExecutionTime(task);
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}
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}
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//--------------------- Infrastructure ---------------------------
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volatile int passed = 0, failed = 0;
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void pass() {passed++;}
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void fail() {failed++; Thread.dumpStack();}
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void fail(String msg) {System.err.println(msg); fail();}
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void unexpected(Throwable t) {failed++; t.printStackTrace();}
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void check(boolean cond) {if (cond) pass(); else fail();}
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void equal(Object x, Object y) {
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if (x == null ? y == null : x.equals(y)) pass();
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else fail(x + " not equal to " + y);}
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public static void main(String[] args) throws Throwable {
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Class<?> k = new Object(){}.getClass().getEnclosingClass();
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try {k.getMethod("instanceMain",String[].class)
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.invoke( k.newInstance(), (Object) args);}
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catch (Throwable e) {throw e.getCause();}}
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public void instanceMain(String[] args) throws Throwable {
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try {test(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 AssertionError("Some tests failed");}
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}
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