| /* |
| * 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. |
| */ |
| |
| /* |
| * This file is available under and governed by the GNU General Public |
| * License version 2 only, as published by the Free Software Foundation. |
| * However, the following notice accompanied the original version of this |
| * file: |
| * |
| * Written by Doug Lea with assistance from members of JCP JSR-166 |
| * Expert Group and released to the public domain, as explained at |
| * http://creativecommons.org/publicdomain/zero/1.0/ |
| */ |
| |
| /* |
| * @test |
| * @bug 6445158 |
| * @summary tests for Phaser.arrive() |
| */ |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.Phaser; |
| import java.util.concurrent.ThreadLocalRandom; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| public class Arrive { |
| void test(String[] args) throws Throwable { |
| for (int i = 0; i < 100; ++i) |
| doTest(args); |
| } |
| void doTest(String[] args) throws Throwable { |
| final int n = ThreadLocalRandom.current().nextInt(1, 10); |
| final Phaser startingGate = new Phaser(n); |
| final Phaser phaser = new Phaser(n); |
| final List<Thread> threads = new ArrayList<>(); |
| final AtomicInteger count0 = new AtomicInteger(0); |
| final AtomicInteger count1 = new AtomicInteger(0); |
| final Runnable task = new Runnable() { public void run() { |
| equal(startingGate.getPhase(), 0); |
| startingGate.arriveAndAwaitAdvance(); |
| equal(startingGate.getPhase(), 1); |
| int phase = phaser.arrive(); |
| if (phase == 0) |
| count0.getAndIncrement(); |
| else if (phase == 1) |
| count1.getAndIncrement(); |
| else |
| fail(); |
| }}; |
| for (int i = 0; i < n; i++) |
| threads.add(new Thread(task)); |
| for (Thread thread : threads) |
| thread.start(); |
| for (Thread thread : threads) |
| thread.join(); |
| equal(count0.get(), n); |
| equal(count1.get(), 0); |
| equal(phaser.getPhase(), 1); |
| } |
| |
| //--------------------- 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 Arrive().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");} |
| } |