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

Comparing jsr166/src/test/tck/ExchangerTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:54 2003 UTC vs.
Revision 1.11 by jsr166, Sat Nov 21 02:33:20 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
12	–	public class ExchangerTest extends TestCase{
13	–
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	<	private static long SHORT_DELAY_MS = 100;
92	<	private static long MEDIUM_DELAY_MS = 1000;
93	<	private static long LONG_DELAY_MS = 10000;
94	<
95	<	private final static Integer one = new Integer(1);
96	<	private final static Integer two = new Integer(2);
97	<
98	<	public void testExchange(){
99	<	final Exchanger e = new Exchanger();
100	<	Thread t1 = new Thread(new Runnable(){
101	<	public void run(){
102	<	try{
103	<	Object v = e.exchange(one);
104	<	assertEquals(v, two);
105	<	Object w = e.exchange(v);
106	<	assertEquals(w, one);
107	<	}catch(InterruptedException e){
108	<	fail("unexpected exception");
109	<	}
110	<	}
111	<	});
112	<	Thread t2 = new Thread(new Runnable(){
113	<	public void run(){
114	<	try{
115	<	Object v = e.exchange(two);
116	<	assertEquals(v, one);
117	<	Object w = e.exchange(v);
118	<	assertEquals(w, two);
119	<	}catch(InterruptedException e){
120	<	fail("unexpected exception");
121	<	}
122	<	}
123	<	});
124	<	try {
125	<	t1.start();
126	<	t2.start();
127	<	t1.join();
128	<	t2.join();
129	<	} catch(InterruptedException ex) {
130	<	fail("unexpected exception");
131	<	}
132	<	}
133	<
134	<	public void testExchange1_InterruptedException(){
135	<	final Exchanger e = new Exchanger();
136	<	Thread t = new Thread(new Runnable() {
137	<	public void run(){
138	<	try{
139	<	e.exchange(one);
140	<	fail("should throw");
141	<	}catch(InterruptedException success){
142	<	}
143	<	}
144	<	});
145	<	try{
146	<	t.start();
147	<	Thread.sleep(SHORT_DELAY_MS);
148	<	t.interrupt();
149	<	t.join();
150	<	} catch(InterruptedException ex) {
151	<	fail("unexpected exception");
152	<	}
153	<	}
154	<
155	<	public void testExchange2_InterruptedException(){
156	<	final Exchanger e = new Exchanger();
87	<	Thread t = new Thread(new Runnable() {
88	<	public void run(){
89	<	try{
90	<	e.exchange(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
91	<	fail("should throw");
92	<	} catch(InterruptedException success){
93	<	} catch(Exception e2){
94	<	fail("should throw IE");
95	<	}
96	<	}
97	<	});
98	<	try{
99	<	t.start();
100	<	t.interrupt();
101	<	t.join();
102	<	} catch(InterruptedException ex){
103	<	fail("unexpected exception");
104	<	}
105	<	}
106	<
107	<	public void testExchange3_TimeOutException(){
108	<	final Exchanger e = new Exchanger();
109	<	Thread t = new Thread(new Runnable() {
110	<	public void run(){
111	<	try{
112	<	e.exchange(null, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
113	<	fail("should throw");
114	<	}catch(TimeoutException success){}
115	<	catch(InterruptedException e2){
116	<	fail("should throw TOE");
117	<	}
118	<	}
119	<	});
120	<	try{
121	<	t.start();
122	<	t.join();
123	<	} catch(InterruptedException ex){
124	<	fail("unexpected exception");
125	<	}
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 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	>	t.interrupt();
103	>	t.join();
104	>	}
105	>
106	>	/**
107	>	* timeout during wait for timed exchange throws TOE
108	>	*/
109	>	public void testExchange_TimeOutException() throws InterruptedException {
110	>	final Exchanger e = new Exchanger();
111	>	Thread t = new Thread(new CheckedRunnable() {
112	>	public void realRun() throws Exception {
113	>	try {
114	>	e.exchange(null, SHORT_DELAY_MS, MILLISECONDS);
115	>	threadShouldThrow();
116	>	} catch (TimeoutException success) {}
117	>	}});
118	>
119	>	t.start();
120	>	t.join();
121	>	}
122	>
123	>	/**
124	>	* If one exchanging thread is interrupted, another succeeds.
125	>	*/
126	>	public void testReplacementAfterExchange() throws InterruptedException {
127	>	final Exchanger e = new Exchanger();
128	>	Thread t1 = new Thread(new CheckedInterruptedRunnable() {
129	>	public void realRun() throws InterruptedException {
130	>	Object v = e.exchange(one);
131	>	threadAssertEquals(v, two);
132	>	Object w = e.exchange(v);
133	>	}});
134	>	Thread t2 = new Thread(new CheckedRunnable() {
135	>	public void realRun() throws InterruptedException {
136	>	Object v = e.exchange(two);
137	>	threadAssertEquals(v, one);
138	>	Thread.sleep(SMALL_DELAY_MS);
139	>	Object w = e.exchange(v);
140	>	threadAssertEquals(w, three);
141	>	}});
142	>	Thread t3 = new Thread(new CheckedRunnable() {
143	>	public void realRun() throws InterruptedException {
144	>	Thread.sleep(SMALL_DELAY_MS);
145	>	Object w = e.exchange(three);
146	>	threadAssertEquals(w, one);
147	>	}});
148	>
149	>	t1.start();
150	>	t2.start();
151	>	t3.start();
152	>	Thread.sleep(SHORT_DELAY_MS);
153	>	t1.interrupt();
154	>	t1.join();
155	>	t2.join();
156	>	t3.join();
157		}
158	+
159		}

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