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

Comparing jsr166/src/test/tck/ExchangerTest.java (file contents):
Revision 1.2 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.10 by jsr166, Sat Nov 21 02:07:26 2009 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/licenses/publicdomain
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
#	Line 10 | Line 11 | import java.util.*;
11		import java.util.concurrent.*;
12
13		public class ExchangerTest extends JSR166TestCase {
14	<
14	>
15		public static void main(String[] args) {
16	<	junit.textui.TestRunner.run (suite());
16	>	junit.textui.TestRunner.run (suite());
17		}
18		public static Test suite() {
19	<	return new TestSuite(ExchangerTest.class);
19	>	return new TestSuite(ExchangerTest.class);
20	>	}
21	>
22	>	/**
23	>	* exchange exchanges objects across two threads
24	>	*/
25	>	public void testExchange() throws InterruptedException {
26	>	final Exchanger e = new Exchanger();
27	>	Thread t1 = new Thread(new CheckedRunnable() {
28	>	public void realRun() throws InterruptedException {
29	>	Object v = e.exchange(one);
30	>	threadAssertEquals(v, two);
31	>	Object w = e.exchange(v);
32	>	threadAssertEquals(w, one);
33	>	}});
34	>	Thread t2 = new Thread(new CheckedRunnable() {
35	>	public void realRun() throws InterruptedException {
36	>	Object v = e.exchange(two);
37	>	threadAssertEquals(v, one);
38	>	Object w = e.exchange(v);
39	>	threadAssertEquals(w, two);
40	>	}});
41	>
42	>	t1.start();
43	>	t2.start();
44	>	t1.join();
45	>	t2.join();
46	>	}
47	>
48	>	/**
49	>	* timed exchange exchanges objects across two threads
50	>	*/
51	>	public void testTimedExchange() throws InterruptedException {
52	>	final Exchanger e = new Exchanger();
53	>	Thread t1 = new Thread(new CheckedRunnable() {
54	>	public void realRun() throws Exception {
55	>	Object v = e.exchange(one, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
56	>	threadAssertEquals(v, two);
57	>	Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
58	>	threadAssertEquals(w, one);
59	>	}});
60	>	Thread t2 = new Thread(new CheckedRunnable() {
61	>	public void realRun() throws Exception {
62	>	Object v = e.exchange(two, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
63	>	threadAssertEquals(v, one);
64	>	Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
65	>	threadAssertEquals(w, two);
66	>	}});
67	>
68	>	t1.start();
69	>	t2.start();
70	>	t1.join();
71	>	t2.join();
72	>	}
73	>
74	>	/**
75	>	* interrupt during wait for exchange throws IE
76	>	*/
77	>	public void testExchange_InterruptedException() throws InterruptedException {
78	>	final Exchanger e = new Exchanger();
79	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
80	>	public void realRun() throws InterruptedException {
81	>	e.exchange(one);
82	>	}});
83	>
84	>	t.start();
85	>	Thread.sleep(SHORT_DELAY_MS);
86	>	t.interrupt();
87	>	t.join();
88		}
89
90	<	public void testExchange() {
90	>	/**
91	>	* interrupt during wait for timed exchange throws IE
92	>	*/
93	>	public void testTimedExchange_InterruptedException() throws InterruptedException {
94		final Exchanger e = new Exchanger();
95	<	Thread t1 = new Thread(new Runnable(){
96	<	public void run(){
97	<	try {
98	<	Object v = e.exchange(one);
99	<	threadAssertEquals(v, two);
100	<	Object w = e.exchange(v);
101	<	threadAssertEquals(w, one);
102	<	} catch(InterruptedException e){
31	<	threadFail("unexpected exception");
32	<	}
33	<	}
34	<	});
35	<	Thread t2 = new Thread(new Runnable(){
36	<	public void run(){
37	<	try {
38	<	Object v = e.exchange(two);
39	<	threadAssertEquals(v, one);
40	<	Object w = e.exchange(v);
41	<	threadAssertEquals(w, two);
42	<	} catch(InterruptedException e){
43	<	threadFail("unexpected exception");
44	<	}
45	<	}
46	<	});
47	<	try {
48	<	t1.start();
49	<	t2.start();
50	<	t1.join();
51	<	t2.join();
52	<	} catch(InterruptedException ex) {
53	<	fail("unexpected exception");
54	<	}
55	<	}
56	<
57	<	public void testTimedExchange() {
58	<	final Exchanger e = new Exchanger();
59	<	Thread t1 = new Thread(new Runnable(){
60	<	public void run(){
61	<	try {
62	<	Object v = e.exchange(one, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
63	<	threadAssertEquals(v, two);
64	<	Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
65	<	threadAssertEquals(w, one);
66	<	} catch(InterruptedException e){
67	<	threadFail("unexpected exception");
68	<	} catch(TimeoutException toe) {
69	<	threadFail("unexpected exception");
70	<	}
71	<	}
72	<	});
73	<	Thread t2 = new Thread(new Runnable(){
74	<	public void run(){
75	<	try {
76	<	Object v = e.exchange(two, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
77	<	threadAssertEquals(v, one);
78	<	Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
79	<	threadAssertEquals(w, two);
80	<	} catch(InterruptedException e){
81	<	threadFail("unexpected exception");
82	<	} catch(TimeoutException toe) {
83	<	threadFail("unexpected exception");
84	<	}
85	<	}
86	<	});
87	<	try {
88	<	t1.start();
89	<	t2.start();
90	<	t1.join();
91	<	t2.join();
92	<	} catch(InterruptedException ex) {
93	<	fail("unexpected exception");
94	<	}
95	<	}
96	<
97	<	public void testExchange_InterruptedException(){
98	<	final Exchanger e = new Exchanger();
99	<	Thread t = new Thread(new Runnable() {
100	<	public void run(){
101	<	try {
102	<	e.exchange(one);
103	<	threadFail("should throw");
104	<	} catch(InterruptedException success){
105	<	}
106	<	}
107	<	});
108	<	try {
109	<	t.start();
110	<	Thread.sleep(SHORT_DELAY_MS);
111	<	t.interrupt();
112	<	t.join();
113	<	} catch(InterruptedException ex) {
114	<	fail("unexpected exception");
115	<	}
116	<	}
117	<
118	<	public void testTimedExchange_InterruptedException(){
119	<	final Exchanger e = new Exchanger();
120	<	Thread t = new Thread(new Runnable() {
121	<	public void run(){
122	<	try {
123	<	e.exchange(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
124	<	threadFail("should throw");
125	<	} catch(InterruptedException success){
126	<	} catch(Exception e2){
127	<	threadFail("should throw IE");
128	<	}
129	<	}
130	<	});
131	<	try {
132	<	t.start();
133	<	t.interrupt();
134	<	t.join();
135	<	} catch(InterruptedException ex){
136	<	fail("unexpected exception");
137	<	}
138	<	}
139	<
140	<	public void testExchange_TimeOutException(){
141	<	final Exchanger e = new Exchanger();
142	<	Thread t = new Thread(new Runnable() {
143	<	public void run(){
144	<	try {
145	<	e.exchange(null, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
146	<	threadFail("should throw");
147	<	} catch(TimeoutException success){
148	<	} catch(InterruptedException e2){
149	<	threadFail("should throw TOE");
150	<	}
151	<	}
152	<	});
153	<	try {
154	<	t.start();
155	<	t.join();
156	<	} catch(InterruptedException ex){
157	<	fail("unexpected exception");
158	<	}
95	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
96	>	public void realRun() throws Exception {
97	>	e.exchange(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
98	>	}});
99	>
100	>	t.start();
101	>	t.interrupt();
102	>	t.join();
103		}
104	+
105	+	/**
106	+	* timeout during wait for timed exchange throws TOE
107	+	*/
108	+	public void testExchange_TimeOutException() throws InterruptedException {
109	+	final Exchanger e = new Exchanger();
110	+	Thread t = new Thread(new CheckedRunnable() {
111	+	public void realRun() throws Exception {
112	+	try {
113	+	e.exchange(null, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
114	+	threadShouldThrow();
115	+	} catch (TimeoutException success) {}
116	+	}});
117	+
118	+	t.start();
119	+	t.join();
120	+	}
121	+
122	+	/**
123	+	* If one exchanging thread is interrupted, another succeeds.
124	+	*/
125	+	public void testReplacementAfterExchange() throws InterruptedException {
126	+	final Exchanger e = new Exchanger();
127	+	Thread t1 = new Thread(new CheckedInterruptedRunnable() {
128	+	public void realRun() throws InterruptedException {
129	+	Object v = e.exchange(one);
130	+	threadAssertEquals(v, two);
131	+	Object w = e.exchange(v);
132	+	}});
133	+	Thread t2 = new Thread(new CheckedRunnable() {
134	+	public void realRun() throws InterruptedException {
135	+	Object v = e.exchange(two);
136	+	threadAssertEquals(v, one);
137	+	Thread.sleep(SMALL_DELAY_MS);
138	+	Object w = e.exchange(v);
139	+	threadAssertEquals(w, three);
140	+	}});
141	+	Thread t3 = new Thread(new CheckedRunnable() {
142	+	public void realRun() throws InterruptedException {
143	+	Thread.sleep(SMALL_DELAY_MS);
144	+	Object w = e.exchange(three);
145	+	threadAssertEquals(w, one);
146	+	}});
147	+
148	+	t1.start();
149	+	t2.start();
150	+	t3.start();
151	+	Thread.sleep(SHORT_DELAY_MS);
152	+	t1.interrupt();
153	+	t1.join();
154	+	t2.join();
155	+	t3.join();
156	+	}
157	+
158		}

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