--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/util/concurrent/tck/ExchangerTest.java Fri Jan 29 11:44:19 2016 -0800
@@ -0,0 +1,180 @@
+/*
+ * 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/
+ * Other contributors include Andrew Wright, Jeffrey Hayes,
+ * Pat Fisher, Mike Judd.
+ */
+
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.Exchanger;
+import java.util.concurrent.TimeoutException;
+
+import junit.framework.Test;
+import junit.framework.TestSuite;
+
+public class ExchangerTest extends JSR166TestCase {
+
+ public static void main(String[] args) {
+ main(suite(), args);
+ }
+ public static Test suite() {
+ return new TestSuite(ExchangerTest.class);
+ }
+
+ /**
+ * exchange exchanges objects across two threads
+ */
+ public void testExchange() {
+ final Exchanger e = new Exchanger();
+ Thread t1 = newStartedThread(new CheckedRunnable() {
+ public void realRun() throws InterruptedException {
+ assertSame(one, e.exchange(two));
+ assertSame(two, e.exchange(one));
+ }});
+ Thread t2 = newStartedThread(new CheckedRunnable() {
+ public void realRun() throws InterruptedException {
+ assertSame(two, e.exchange(one));
+ assertSame(one, e.exchange(two));
+ }});
+
+ awaitTermination(t1);
+ awaitTermination(t2);
+ }
+
+ /**
+ * timed exchange exchanges objects across two threads
+ */
+ public void testTimedExchange() {
+ final Exchanger e = new Exchanger();
+ Thread t1 = newStartedThread(new CheckedRunnable() {
+ public void realRun() throws Exception {
+ assertSame(one, e.exchange(two, LONG_DELAY_MS, MILLISECONDS));
+ assertSame(two, e.exchange(one, LONG_DELAY_MS, MILLISECONDS));
+ }});
+ Thread t2 = newStartedThread(new CheckedRunnable() {
+ public void realRun() throws Exception {
+ assertSame(two, e.exchange(one, LONG_DELAY_MS, MILLISECONDS));
+ assertSame(one, e.exchange(two, LONG_DELAY_MS, MILLISECONDS));
+ }});
+
+ awaitTermination(t1);
+ awaitTermination(t2);
+ }
+
+ /**
+ * interrupt during wait for exchange throws IE
+ */
+ public void testExchange_InterruptedException() {
+ final Exchanger e = new Exchanger();
+ final CountDownLatch threadStarted = new CountDownLatch(1);
+ Thread t = newStartedThread(new CheckedInterruptedRunnable() {
+ public void realRun() throws InterruptedException {
+ threadStarted.countDown();
+ e.exchange(one);
+ }});
+
+ await(threadStarted);
+ t.interrupt();
+ awaitTermination(t);
+ }
+
+ /**
+ * interrupt during wait for timed exchange throws IE
+ */
+ public void testTimedExchange_InterruptedException() {
+ final Exchanger e = new Exchanger();
+ final CountDownLatch threadStarted = new CountDownLatch(1);
+ Thread t = newStartedThread(new CheckedInterruptedRunnable() {
+ public void realRun() throws Exception {
+ threadStarted.countDown();
+ e.exchange(null, LONG_DELAY_MS, MILLISECONDS);
+ }});
+
+ await(threadStarted);
+ t.interrupt();
+ awaitTermination(t);
+ }
+
+ /**
+ * timeout during wait for timed exchange throws TimeoutException
+ */
+ public void testExchange_TimeoutException() {
+ final Exchanger e = new Exchanger();
+ Thread t = newStartedThread(new CheckedRunnable() {
+ public void realRun() throws Exception {
+ long startTime = System.nanoTime();
+ try {
+ e.exchange(null, timeoutMillis(), MILLISECONDS);
+ shouldThrow();
+ } catch (TimeoutException success) {}
+ assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
+ }});
+
+ awaitTermination(t);
+ }
+
+ /**
+ * If one exchanging thread is interrupted, another succeeds.
+ */
+ public void testReplacementAfterExchange() {
+ final Exchanger e = new Exchanger();
+ final CountDownLatch exchanged = new CountDownLatch(2);
+ final CountDownLatch interrupted = new CountDownLatch(1);
+ Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
+ public void realRun() throws InterruptedException {
+ assertSame(two, e.exchange(one));
+ exchanged.countDown();
+ e.exchange(two);
+ }});
+ Thread t2 = newStartedThread(new CheckedRunnable() {
+ public void realRun() throws InterruptedException {
+ assertSame(one, e.exchange(two));
+ exchanged.countDown();
+ interrupted.await();
+ assertSame(three, e.exchange(one));
+ }});
+ Thread t3 = newStartedThread(new CheckedRunnable() {
+ public void realRun() throws InterruptedException {
+ interrupted.await();
+ assertSame(one, e.exchange(three));
+ }});
+
+ await(exchanged);
+ t1.interrupt();
+ awaitTermination(t1);
+ interrupted.countDown();
+ awaitTermination(t2);
+ awaitTermination(t3);
+ }
+
+}