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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 1.16 by dl, Fri May 6 11:22:07 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	>	* exchange exchanges objects across two threads
25	>	*/
26	>	public void testExchange() throws InterruptedException {
27	>	final Exchanger e = new Exchanger();
28	>	Thread t1 = new Thread(new CheckedRunnable() {
29	>	public void realRun() throws InterruptedException {
30	>	assertSame(one, e.exchange(two));
31	>	assertSame(two, e.exchange(one));
32	>	}});
33	>	Thread t2 = new Thread(new CheckedRunnable() {
34	>	public void realRun() throws InterruptedException {
35	>	assertSame(two, e.exchange(one));
36	>	assertSame(one, e.exchange(two));
37	>	}});
38	>
39	>	t1.start();
40	>	t2.start();
41	>	t1.join();
42	>	t2.join();
43	>	}
44	>
45	>	/**
46	>	* timed exchange exchanges objects across two threads
47	>	*/
48	>	public void testTimedExchange() throws InterruptedException {
49	>	final Exchanger e = new Exchanger();
50	>	Thread t1 = new Thread(new CheckedRunnable() {
51	>	public void realRun() throws Exception {
52	>	assertSame(one, e.exchange(two, SHORT_DELAY_MS, MILLISECONDS));
53	>	assertSame(two, e.exchange(one, SHORT_DELAY_MS, MILLISECONDS));
54	>	}});
55	>	Thread t2 = new Thread(new CheckedRunnable() {
56	>	public void realRun() throws Exception {
57	>	assertSame(two, e.exchange(one, SHORT_DELAY_MS, MILLISECONDS));
58	>	assertSame(one, e.exchange(two, SHORT_DELAY_MS, MILLISECONDS));
59	>	}});
60	>
61	>	t1.start();
62	>	t2.start();
63	>	t1.join();
64	>	t2.join();
65	>	}
66	>
67	>	/**
68	>	* interrupt during wait for exchange throws IE
69	>	*/
70	>	public void testExchange_InterruptedException() throws InterruptedException {
71	>	final Exchanger e = new Exchanger();
72	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
73	>	public void realRun() throws InterruptedException {
74	>	e.exchange(one);
75	>	}});
76	>
77	>	t.start();
78	>	delay(SHORT_DELAY_MS);
79	>	t.interrupt();
80	>	t.join();
81	>	}
82	>
83	>	/**
84	>	* interrupt during wait for timed exchange throws IE
85	>	*/
86	>	public void testTimedExchange_InterruptedException() throws InterruptedException {
87	>	final Exchanger e = new Exchanger();
88	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
89	>	public void realRun() throws Exception {
90	>	e.exchange(null, SMALL_DELAY_MS, MILLISECONDS);
91	>	}});
92	>
93	>	t.start();
94	>	delay(SHORT_DELAY_MS);
95	>	t.interrupt();
96	>	t.join();
97		}
98
99		/**
100	<	*
100	>	* timeout during wait for timed exchange throws TOE
101		*/
102	<	public void testExchange() {
102	>	public void testExchange_TimeOutException() throws InterruptedException {
103		final Exchanger e = new Exchanger();
104	<	Thread t1 = new Thread(new Runnable(){
105	<	public void run(){
106	<	try {
107	<	Object v = e.exchange(one);
108	<	threadAssertEquals(v, two);
109	<	Object w = e.exchange(v);
110	<	threadAssertEquals(w, one);
33	<	} catch(InterruptedException e){
34	<	threadUnexpectedException();
35	<	}
36	<	}
37	<	});
38	<	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	<	}
58	<	}
59	<
60	<	/**
61	<	*
62	<	*/
63	<	public void testTimedExchange() {
64	<	final Exchanger e = new Exchanger();
65	<	Thread t1 = new Thread(new Runnable(){
66	<	public void run(){
67	<	try {
68	<	Object v = e.exchange(one, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
69	<	threadAssertEquals(v, two);
70	<	Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
71	<	threadAssertEquals(w, one);
72	<	} catch(InterruptedException e){
73	<	threadUnexpectedException();
74	<	} catch(TimeoutException toe) {
75	<	threadUnexpectedException();
76	<	}
77	<	}
78	<	});
79	<	Thread t2 = new Thread(new Runnable(){
80	<	public void run(){
81	<	try {
82	<	Object v = e.exchange(two, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
83	<	threadAssertEquals(v, one);
84	<	Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
85	<	threadAssertEquals(w, two);
86	<	} catch(InterruptedException e){
87	<	threadUnexpectedException();
88	<	} catch(TimeoutException toe) {
89	<	threadUnexpectedException();
90	<	}
91	<	}
92	<	});
93	<	try {
94	<	t1.start();
95	<	t2.start();
96	<	t1.join();
97	<	t2.join();
98	<	} catch(InterruptedException ex) {
99	<	unexpectedException();
100	<	}
101	<	}
102	<
103	<	/**
104	<	*
105	<	*/
106	<	public void testExchange_InterruptedException(){
107	<	final Exchanger e = new Exchanger();
108	<	Thread t = new Thread(new Runnable() {
109	<	public void run(){
110	<	try {
111	<	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	<	}
104	>	Thread t = new ThreadShouldThrow(TimeoutException.class) {
105	>	public void realRun() throws Exception {
106	>	e.exchange(null, SHORT_DELAY_MS, MILLISECONDS);
107	>	}};
108	>
109	>	t.start();
110	>	t.join();
111		}
112	+
113	+	/**
114	+	* If one exchanging thread is interrupted, another succeeds.
115	+	*/
116	+	public void testReplacementAfterExchange() throws InterruptedException {
117	+	final Exchanger e = new Exchanger();
118	+	Thread t1 = new Thread(new CheckedInterruptedRunnable() {
119	+	public void realRun() throws InterruptedException {
120	+	assertSame(two, e.exchange(one));
121	+	e.exchange(two);
122	+	}});
123	+	Thread t2 = new Thread(new CheckedRunnable() {
124	+	public void realRun() throws InterruptedException {
125	+	assertSame(one, e.exchange(two));
126	+	delay(SMALL_DELAY_MS);
127	+	assertSame(three, e.exchange(one));
128	+	}});
129	+	Thread t3 = new Thread(new CheckedRunnable() {
130	+	public void realRun() throws InterruptedException {
131	+	delay(SMALL_DELAY_MS);
132	+	assertSame(one, e.exchange(three));
133	+	}});
134	+
135	+	t1.start();
136	+	t2.start();
137	+	t3.start();
138	+	delay(SHORT_DELAY_MS);
139	+	t1.interrupt();
140	+	t1.join();
141	+	t2.join();
142	+	t3.join();
143	+	}
144	+
145		}

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