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root/jsr166/jsr166/src/test/tck/ExchangerTest.java

Comparing jsr166/src/test/tck/ExchangerTest.java (file contents):
Revision 1.3 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.20 by jsr166, Sun May 29 06:48:42 2011 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13
14		public class ExchangerTest extends JSR166TestCase {
15	<
15	>
16		public static void main(String[] args) {
17	<	junit.textui.TestRunner.run (suite());
17	>	junit.textui.TestRunner.run(suite());
18		}
19		public static Test suite() {
20	<	return new TestSuite(ExchangerTest.class);
20	>	return new TestSuite(ExchangerTest.class);
21		}
22
23		/**
24	<	*
24	>	* exchange exchanges objects across two threads
25		*/
26		public void testExchange() {
27		final Exchanger e = new Exchanger();
28	<	Thread t1 = new Thread(new Runnable(){
29	<	public void run(){
30	<	try {
31	<	Object v = e.exchange(one);
32	<	threadAssertEquals(v, two);
33	<	Object w = e.exchange(v);
34	<	threadAssertEquals(w, one);
35	<	} catch(InterruptedException e){
36	<	threadUnexpectedException();
37	<	}
38	<	}
39	<	});
40	<	Thread t2 = new Thread(new Runnable(){
39	<	public void run(){
40	<	try {
41	<	Object v = e.exchange(two);
42	<	threadAssertEquals(v, one);
43	<	Object w = e.exchange(v);
44	<	threadAssertEquals(w, two);
45	<	} catch(InterruptedException e){
46	<	threadUnexpectedException();
47	<	}
48	<	}
49	<	});
50	<	try {
51	<	t1.start();
52	<	t2.start();
53	<	t1.join();
54	<	t2.join();
55	<	} catch(InterruptedException ex) {
56	<	unexpectedException();
57	<	}
28	>	Thread t1 = newStartedThread(new CheckedRunnable() {
29	>	public void realRun() throws InterruptedException {
30	>	assertSame(one, e.exchange(two));
31	>	assertSame(two, e.exchange(one));
32	>	}});
33	>	Thread t2 = newStartedThread(new CheckedRunnable() {
34	>	public void realRun() throws InterruptedException {
35	>	assertSame(two, e.exchange(one));
36	>	assertSame(one, e.exchange(two));
37	>	}});
38	>
39	>	awaitTermination(t1);
40	>	awaitTermination(t2);
41		}
42
43		/**
44	<	*
44	>	* timed exchange exchanges objects across two threads
45		*/
46		public void testTimedExchange() {
47		final Exchanger e = new Exchanger();
48	<	Thread t1 = new Thread(new Runnable(){
49	<	public void run(){
50	<	try {
51	<	Object v = e.exchange(one, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
52	<	threadAssertEquals(v, two);
53	<	Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
54	<	threadAssertEquals(w, one);
55	<	} catch(InterruptedException e){
56	<	threadUnexpectedException();
57	<	} catch(TimeoutException toe) {
58	<	threadUnexpectedException();
59	<	}
60	<	}
61	<	});
62	<	Thread t2 = new Thread(new Runnable(){
63	<	public void run(){
64	<	try {
65	<	Object v = e.exchange(two, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
66	<	threadAssertEquals(v, one);
67	<	Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
68	<	threadAssertEquals(w, two);
69	<	} catch(InterruptedException e){
70	<	threadUnexpectedException();
71	<	} catch(TimeoutException toe) {
72	<	threadUnexpectedException();
73	<	}
74	<	}
75	<	});
76	<	try {
77	<	t1.start();
78	<	t2.start();
79	<	t1.join();
80	<	t2.join();
81	<	} catch(InterruptedException ex) {
82	<	unexpectedException();
83	<	}
84	<	}
85	<
86	<	/**
87	<	*
88	<	*/
89	<	public void testExchange_InterruptedException(){
90	<	final Exchanger e = new Exchanger();
91	<	Thread t = new Thread(new Runnable() {
92	<	public void run(){
93	<	try {
94	<	e.exchange(one);
112	<	threadShouldThrow();
113	<	} catch(InterruptedException success){
114	<	}
115	<	}
116	<	});
117	<	try {
118	<	t.start();
119	<	Thread.sleep(SHORT_DELAY_MS);
120	<	t.interrupt();
121	<	t.join();
122	<	} catch(InterruptedException ex) {
123	<	unexpectedException();
124	<	}
125	<	}
126	<
127	<	/**
128	<	*
129	<	*/
130	<	public void testTimedExchange_InterruptedException(){
131	<	final Exchanger e = new Exchanger();
132	<	Thread t = new Thread(new Runnable() {
133	<	public void run(){
134	<	try {
135	<	e.exchange(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
136	<	threadShouldThrow();
137	<	} catch(InterruptedException success){
138	<	} catch(Exception e2){
139	<	threadFail("should throw IE");
140	<	}
141	<	}
142	<	});
143	<	try {
144	<	t.start();
145	<	t.interrupt();
146	<	t.join();
147	<	} catch(InterruptedException ex){
148	<	unexpectedException();
149	<	}
150	<	}
151	<
152	<	/**
153	<	*
154	<	*/
155	<	public void testExchange_TimeOutException(){
156	<	final Exchanger e = new Exchanger();
157	<	Thread t = new Thread(new Runnable() {
158	<	public void run(){
159	<	try {
160	<	e.exchange(null, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
161	<	threadShouldThrow();
162	<	} catch(TimeoutException success){
163	<	} catch(InterruptedException e2){
164	<	threadFail("should throw TOE");
165	<	}
166	<	}
167	<	});
168	<	try {
169	<	t.start();
170	<	t.join();
171	<	} catch(InterruptedException ex){
172	<	unexpectedException();
173	<	}
48	>	Thread t1 = newStartedThread(new CheckedRunnable() {
49	>	public void realRun() throws Exception {
50	>	assertSame(one, e.exchange(two, LONG_DELAY_MS, MILLISECONDS));
51	>	assertSame(two, e.exchange(one, LONG_DELAY_MS, MILLISECONDS));
52	>	}});
53	>	Thread t2 = newStartedThread(new CheckedRunnable() {
54	>	public void realRun() throws Exception {
55	>	assertSame(two, e.exchange(one, LONG_DELAY_MS, MILLISECONDS));
56	>	assertSame(one, e.exchange(two, LONG_DELAY_MS, MILLISECONDS));
57	>	}});
58	>
59	>	awaitTermination(t1);
60	>	awaitTermination(t2);
61	>	}
62	>
63	>	/**
64	>	* interrupt during wait for exchange throws IE
65	>	*/
66	>	public void testExchange_InterruptedException() {
67	>	final Exchanger e = new Exchanger();
68	>	final CountDownLatch threadStarted = new CountDownLatch(1);
69	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
70	>	public void realRun() throws InterruptedException {
71	>	threadStarted.countDown();
72	>	e.exchange(one);
73	>	}});
74	>
75	>	await(threadStarted);
76	>	t.interrupt();
77	>	awaitTermination(t);
78	>	}
79	>
80	>	/**
81	>	* interrupt during wait for timed exchange throws IE
82	>	*/
83	>	public void testTimedExchange_InterruptedException() {
84	>	final Exchanger e = new Exchanger();
85	>	final CountDownLatch threadStarted = new CountDownLatch(1);
86	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
87	>	public void realRun() throws Exception {
88	>	threadStarted.countDown();
89	>	e.exchange(null, LONG_DELAY_MS, MILLISECONDS);
90	>	}});
91	>
92	>	await(threadStarted);
93	>	t.interrupt();
94	>	awaitTermination(t);
95		}
96	+
97	+	/**
98	+	* timeout during wait for timed exchange throws TimeoutException
99	+	*/
100	+	public void testExchange_TimeoutException() {
101	+	final Exchanger e = new Exchanger();
102	+	Thread t = newStartedThread(new CheckedRunnable() {
103	+	public void realRun() throws Exception {
104	+	long startTime = System.nanoTime();
105	+	try {
106	+	e.exchange(null, timeoutMillis(), MILLISECONDS);
107	+	shouldThrow();
108	+	} catch (TimeoutException success) {}
109	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
110	+	}});
111	+
112	+	awaitTermination(t);
113	+	}
114	+
115	+	/**
116	+	* If one exchanging thread is interrupted, another succeeds.
117	+	*/
118	+	public void testReplacementAfterExchange() {
119	+	final Exchanger e = new Exchanger();
120	+	final CountDownLatch exchanged = new CountDownLatch(2);
121	+	final CountDownLatch interrupted = new CountDownLatch(1);
122	+	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
123	+	public void realRun() throws InterruptedException {
124	+	assertSame(two, e.exchange(one));
125	+	exchanged.countDown();
126	+	e.exchange(two);
127	+	}});
128	+	Thread t2 = newStartedThread(new CheckedRunnable() {
129	+	public void realRun() throws InterruptedException {
130	+	assertSame(one, e.exchange(two));
131	+	exchanged.countDown();
132	+	interrupted.await();
133	+	assertSame(three, e.exchange(one));
134	+	}});
135	+	Thread t3 = newStartedThread(new CheckedRunnable() {
136	+	public void realRun() throws InterruptedException {
137	+	interrupted.await();
138	+	assertSame(one, e.exchange(three));
139	+	}});
140	+
141	+	await(exchanged);
142	+	t1.interrupt();
143	+	awaitTermination(t1);
144	+	interrupted.countDown();
145	+	awaitTermination(t2);
146	+	awaitTermination(t3);
147	+	}
148	+
149		}

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