| /* |
| * Copyright (c) 2005, 2011, 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 6233235 6268386 |
| * @summary Test allowsCoreThreadTimeOut |
| * @library /lib/testlibrary/ |
| * @author Martin Buchholz |
| */ |
| |
| import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| |
| import java.util.concurrent.ArrayBlockingQueue; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| import jdk.testlibrary.Utils; |
| |
| public class CoreThreadTimeOut { |
| static final long LONG_DELAY_MS = Utils.adjustTimeout(10_000); |
| |
| static class IdentifiableThreadFactory implements ThreadFactory { |
| static ThreadFactory defaultThreadFactory |
| = Executors.defaultThreadFactory(); |
| |
| public Thread newThread(Runnable r) { |
| Thread t = defaultThreadFactory.newThread(r); |
| t.setName("CoreThreadTimeOut-" + t.getName()); |
| return t; |
| } |
| } |
| |
| int countExecutorThreads() { |
| Thread[] threads = new Thread[Thread.activeCount()+100]; |
| Thread.enumerate(threads); |
| int count = 0; |
| for (Thread t : threads) |
| if (t != null && |
| t.getName().matches |
| ("CoreThreadTimeOut-pool-[0-9]+-thread-[0-9]+")) |
| count++; |
| return count; |
| } |
| |
| static long millisElapsedSince(long startTime) { |
| return (System.nanoTime() - startTime) / (1000L * 1000L); |
| } |
| |
| void test(String[] args) throws Throwable { |
| final int threadCount = 10; |
| final int timeoutMillis = 30; |
| BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(2*threadCount); |
| ThreadPoolExecutor tpe |
| = new ThreadPoolExecutor(threadCount, threadCount, |
| timeoutMillis, TimeUnit.MILLISECONDS, |
| q, new IdentifiableThreadFactory()); |
| equal(tpe.getCorePoolSize(), threadCount); |
| check(! tpe.allowsCoreThreadTimeOut()); |
| tpe.allowCoreThreadTimeOut(true); |
| check(tpe.allowsCoreThreadTimeOut()); |
| equal(countExecutorThreads(), 0); |
| long startTime = System.nanoTime(); |
| for (int i = 0; i < threadCount; i++) { |
| tpe.submit(() -> {}); |
| int count = countExecutorThreads(); |
| if (millisElapsedSince(startTime) < timeoutMillis) |
| equal(count, i + 1); |
| } |
| while (countExecutorThreads() > 0 && |
| millisElapsedSince(startTime) < LONG_DELAY_MS) |
| Thread.yield(); |
| equal(countExecutorThreads(), 0); |
| check(millisElapsedSince(startTime) >= timeoutMillis); |
| tpe.shutdown(); |
| check(tpe.allowsCoreThreadTimeOut()); |
| check(tpe.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
| |
| System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
| if (failed > 0) throw new Exception("Some tests failed"); |
| } |
| |
| //--------------------- Infrastructure --------------------------- |
| volatile int passed = 0, failed = 0; |
| void pass() {passed++;} |
| void fail() {failed++; Thread.dumpStack();} |
| void fail(String msg) {System.err.println(msg); fail();} |
| void unexpected(Throwable t) {failed++; t.printStackTrace();} |
| void check(boolean cond) {if (cond) pass(); else fail();} |
| void equal(Object x, Object y) { |
| if (x == null ? y == null : x.equals(y)) pass(); |
| else fail(x + " not equal to " + y);} |
| public static void main(String[] args) throws Throwable { |
| new CoreThreadTimeOut().instanceMain(args);} |
| public void instanceMain(String[] args) throws Throwable { |
| try {test(args);} catch (Throwable t) {unexpected(t);} |
| System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
| if (failed > 0) throw new AssertionError("Some tests failed");} |
| } |