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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 1.10 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.*;
10		import java.util.*;
11		import java.util.concurrent.*;
12
13	<	public class ExchangerTest extends TestCase{
14	<
13	>	public class ExchangerTest extends JSR166TestCase {
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	<	private static long SHORT_DELAY_MS = 100;
91	<	private static long MEDIUM_DELAY_MS = 1000;
92	<	private static long LONG_DELAY_MS = 10000;
93	<
94	<	private final static Integer one = new Integer(1);
95	<	private final static Integer two = new Integer(2);
96	<
97	<	public void testExchange(){
98	<	final Exchanger e = new Exchanger();
99	<	Thread t1 = new Thread(new Runnable(){
100	<	public void run(){
101	<	try{
102	<	Object v = e.exchange(one);
103	<	assertEquals(v, two);
104	<	Object w = e.exchange(v);
105	<	assertEquals(w, one);
106	<	}catch(InterruptedException e){
107	<	fail("unexpected exception");
108	<	}
109	<	}
110	<	});
111	<	Thread t2 = new Thread(new Runnable(){
112	<	public void run(){
113	<	try{
114	<	Object v = e.exchange(two);
115	<	assertEquals(v, one);
116	<	Object w = e.exchange(v);
117	<	assertEquals(w, two);
118	<	}catch(InterruptedException e){
119	<	fail("unexpected exception");
120	<	}
121	<	}
122	<	});
123	<	try {
124	<	t1.start();
125	<	t2.start();
126	<	t1.join();
127	<	t2.join();
128	<	} catch(InterruptedException ex) {
129	<	fail("unexpected exception");
130	<	}
131	<	}
132	<
133	<	public void testExchange1_InterruptedException(){
134	<	final Exchanger e = new Exchanger();
135	<	Thread t = new Thread(new Runnable() {
136	<	public void run(){
137	<	try{
138	<	e.exchange(one);
139	<	fail("should throw");
140	<	}catch(InterruptedException success){
141	<	}
142	<	}
143	<	});
144	<	try{
145	<	t.start();
146	<	Thread.sleep(SHORT_DELAY_MS);
147	<	t.interrupt();
148	<	t.join();
149	<	} catch(InterruptedException ex) {
150	<	fail("unexpected exception");
151	<	}
152	<	}
153	<
154	<	public void testExchange2_InterruptedException(){
155	<	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	<	}
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 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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