/* * Copyright (c) 2005, 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 6267833 * @summary Tests for invokeAny, invokeAll * @author Martin Buchholz */ import java.util.Arrays; import java.util.List; import java.util.concurrent.Callable; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.Future; import java.util.concurrent.atomic.AtomicLong; public class Invoke { static volatile int passed = 0, failed = 0; static void fail(String msg) { failed++; new AssertionError(msg).printStackTrace(); } static void pass() { passed++; } static void unexpected(Throwable t) { failed++; t.printStackTrace(); } static void check(boolean condition, String msg) { if (condition) pass(); else fail(msg); } static void check(boolean condition) { check(condition, "Assertion failure"); } public static void main(String[] args) { try { final AtomicLong count = new AtomicLong(0); ExecutorService fixed = Executors.newFixedThreadPool(5); class Inc implements Callable<Long> { public Long call() throws Exception { Thread.sleep(200); // Catch IE from possible cancel return count.incrementAndGet(); } } List<Inc> tasks = Arrays.asList(new Inc(), new Inc(), new Inc()); List<Future<Long>> futures = fixed.invokeAll(tasks); check(futures.size() == tasks.size()); check(count.get() == tasks.size()); long gauss = 0; for (Future<Long> future : futures) gauss += future.get(); check(gauss == ((tasks.size()+1)*tasks.size())/2); ExecutorService single = Executors.newSingleThreadExecutor(); long save = count.get(); check(single.invokeAny(tasks) == save + 1); check(count.get() == save + 1); fixed.shutdown(); single.shutdown(); } catch (Throwable t) { unexpected(t); } System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); if (failed > 0) throw new Error("Some tests failed"); } }