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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 1.12 by jsr166, Mon Nov 30 08:31:09 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.*;
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	>	Object v = e.exchange(one);
31	>	threadAssertEquals(v, two);
32	>	Object w = e.exchange(v);
33	>	threadAssertEquals(w, one);
34	>	}});
35	>	Thread t2 = new Thread(new CheckedRunnable() {
36	>	public void realRun() throws InterruptedException {
37	>	Object v = e.exchange(two);
38	>	threadAssertEquals(v, one);
39	>	Object w = e.exchange(v);
40	>	threadAssertEquals(w, two);
41	>	}});
42	>
43	>	t1.start();
44	>	t2.start();
45	>	t1.join();
46	>	t2.join();
47	>	}
48	>
49	>	/**
50	>	* timed exchange exchanges objects across two threads
51	>	*/
52	>	public void testTimedExchange() throws InterruptedException {
53	>	final Exchanger e = new Exchanger();
54	>	Thread t1 = new Thread(new CheckedRunnable() {
55	>	public void realRun() throws Exception {
56	>	Object v = e.exchange(one, SHORT_DELAY_MS, MILLISECONDS);
57	>	threadAssertEquals(v, two);
58	>	Object w = e.exchange(v, SHORT_DELAY_MS, MILLISECONDS);
59	>	threadAssertEquals(w, one);
60	>	}});
61	>	Thread t2 = new Thread(new CheckedRunnable() {
62	>	public void realRun() throws Exception {
63	>	Object v = e.exchange(two, SHORT_DELAY_MS, MILLISECONDS);
64	>	threadAssertEquals(v, one);
65	>	Object w = e.exchange(v, SHORT_DELAY_MS, MILLISECONDS);
66	>	threadAssertEquals(w, two);
67	>	}});
68	>
69	>	t1.start();
70	>	t2.start();
71	>	t1.join();
72	>	t2.join();
73	>	}
74	>
75	>	/**
76	>	* interrupt during wait for exchange throws IE
77	>	*/
78	>	public void testExchange_InterruptedException() throws InterruptedException {
79	>	final Exchanger e = new Exchanger();
80	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
81	>	public void realRun() throws InterruptedException {
82	>	e.exchange(one);
83	>	}});
84	>
85	>	t.start();
86	>	Thread.sleep(SHORT_DELAY_MS);
87	>	t.interrupt();
88	>	t.join();
89		}
90
91	<	public void testExchange() {
91	>	/**
92	>	* interrupt during wait for timed exchange throws IE
93	>	*/
94	>	public void testTimedExchange_InterruptedException() throws InterruptedException {
95		final Exchanger e = new Exchanger();
96	<	Thread t1 = new Thread(new Runnable(){
97	<	public void run(){
98	<	try {
99	<	Object v = e.exchange(one);
100	<	threadAssertEquals(v, two);
101	<	Object w = e.exchange(v);
102	<	threadAssertEquals(w, one);
103	<	} catch(InterruptedException e){
104	<	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	<	}
96	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
97	>	public void realRun() throws Exception {
98	>	e.exchange(null, MEDIUM_DELAY_MS, MILLISECONDS);
99	>	}});
100	>
101	>	t.start();
102	>	Thread.sleep(SHORT_DELAY_MS);
103	>	t.interrupt();
104	>	t.join();
105		}
106	+
107	+	/**
108	+	* timeout during wait for timed exchange throws TOE
109	+	*/
110	+	public void testExchange_TimeOutException() throws InterruptedException {
111	+	final Exchanger e = new Exchanger();
112	+	Thread t = new Thread(new CheckedRunnable() {
113	+	public void realRun() throws Exception {
114	+	try {
115	+	e.exchange(null, SHORT_DELAY_MS, MILLISECONDS);
116	+	threadShouldThrow();
117	+	} catch (TimeoutException success) {}
118	+	}});
119	+
120	+	t.start();
121	+	t.join();
122	+	}
123	+
124	+	/**
125	+	* If one exchanging thread is interrupted, another succeeds.
126	+	*/
127	+	public void testReplacementAfterExchange() throws InterruptedException {
128	+	final Exchanger e = new Exchanger();
129	+	Thread t1 = new Thread(new CheckedInterruptedRunnable() {
130	+	public void realRun() throws InterruptedException {
131	+	Object v = e.exchange(one);
132	+	threadAssertEquals(v, two);
133	+	Object w = e.exchange(v);
134	+	}});
135	+	Thread t2 = new Thread(new CheckedRunnable() {
136	+	public void realRun() throws InterruptedException {
137	+	Object v = e.exchange(two);
138	+	threadAssertEquals(v, one);
139	+	Thread.sleep(SMALL_DELAY_MS);
140	+	Object w = e.exchange(v);
141	+	threadAssertEquals(w, three);
142	+	}});
143	+	Thread t3 = new Thread(new CheckedRunnable() {
144	+	public void realRun() throws InterruptedException {
145	+	Thread.sleep(SMALL_DELAY_MS);
146	+	Object w = e.exchange(three);
147	+	threadAssertEquals(w, one);
148	+	}});
149	+
150	+	t1.start();
151	+	t2.start();
152	+	t3.start();
153	+	Thread.sleep(SHORT_DELAY_MS);
154	+	t1.interrupt();
155	+	t1.join();
156	+	t2.join();
157	+	t3.join();
158	+	}
159	+
160		}

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