96 lines
4.0 KiB
Java
96 lines
4.0 KiB
Java
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/*
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* Copyright 2007 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 6523756
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* @summary Race task submission against shutdownNow
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* @author Martin Buchholz
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*/
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// For extra chances to detect shutdownNow vs. execute races,
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// crank up the iterations to, say 1<<22 and
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// add a call to Thread.yield() before the call to t.start()
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// in ThreadPoolExecutor.addWorker.
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import java.util.*;
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import java.util.concurrent.*;
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public class ShutdownNowExecuteRace {
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static volatile boolean quit = false;
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static volatile ThreadPoolExecutor pool = null;
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final static Runnable sleeper = new Runnable() { public void run() {
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final long ONE_HOUR = 1000L * 60L * 60L;
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try { Thread.sleep(ONE_HOUR); }
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catch (InterruptedException ie) {}
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catch (Throwable t) { unexpected(t); }}};
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static void realMain(String[] args) throws Throwable {
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final int iterations = 1 << 8;
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Thread thread = new Thread() { public void run() {
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while (! quit) {
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ThreadPoolExecutor pool = ShutdownNowExecuteRace.pool;
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if (pool != null)
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try { pool.execute(sleeper); }
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catch (RejectedExecutionException e) {/* OK */}
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catch (Throwable t) { unexpected(t); }}}};
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thread.start();
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for (int i = 0; i < iterations; i++) {
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pool = new ThreadPoolExecutor(
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10, 10, 3L, TimeUnit.DAYS,
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new ArrayBlockingQueue<Runnable>(10));
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pool.shutdownNow();
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check(pool.awaitTermination(3L, TimeUnit.MINUTES));
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}
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quit = true;
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thread.join();
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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 fail(String msg) {System.out.println(msg); fail();}
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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 fail(x + " not equal to " + y);}
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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 AssertionError("Some tests failed");}
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private static abstract class Fun {abstract void f() throws Throwable;}
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static void THROWS(Class<? extends Throwable> k, Fun... fs) {
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for (Fun f : fs)
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try { f.f(); fail("Expected " + k.getName() + " not thrown"); }
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catch (Throwable t) {
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if (k.isAssignableFrom(t.getClass())) pass();
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else unexpected(t);}}
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private static abstract class CheckedThread extends Thread {
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abstract void realRun() throws Throwable;
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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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