ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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 1.24 by jsr166, Sat Mar 25 21:41:10 2017 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.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>
11	>	import java.util.concurrent.CountDownLatch;
12	>	import java.util.concurrent.Exchanger;
13	>	import java.util.concurrent.TimeoutException;
14	>
15	>	import junit.framework.Test;
16	>	import junit.framework.TestSuite;
17	>
18	>	public class ExchangerTest extends JSR166TestCase {
19
12	–	public class ExchangerTest extends TestCase{
13	–
20		public static void main(String[] args) {
21	<	junit.textui.TestRunner.run (suite());
21	>	main(suite(), args);
22		}
23		public static Test suite() {
24	<	return new TestSuite(ExchangerTest.class);
24	>	return new TestSuite(ExchangerTest.class);
25		}
26
27	<	private static long SHORT_DELAY_MS = 100;
28	<	private static long MEDIUM_DELAY_MS = 1000;
29	<	private static long LONG_DELAY_MS = 10000;
30	<
31	<	private final static Integer one = new Integer(1);
32	<	private final static Integer two = new Integer(2);
33	<
34	<	public void testExchange(){
35	<	final Exchanger e = new Exchanger();
36	<	Thread t1 = new Thread(new Runnable(){
37	<	public void run(){
38	<	try{
39	<	Object v = e.exchange(one);
40	<	assertEquals(v, two);
41	<	Object w = e.exchange(v);
42	<	assertEquals(w, one);
43	<	}catch(InterruptedException e){
44	<	fail("unexpected exception");
45	<	}
46	<	}
47	<	});
48	<	Thread t2 = new Thread(new Runnable(){
49	<	public void run(){
50	<	try{
51	<	Object v = e.exchange(two);
52	<	assertEquals(v, one);
53	<	Object w = e.exchange(v);
54	<	assertEquals(w, two);
55	<	}catch(InterruptedException e){
56	<	fail("unexpected exception");
57	<	}
58	<	}
59	<	});
60	<	try {
61	<	t1.start();
62	<	t2.start();
63	<	t1.join();
64	<	t2.join();
65	<	} catch(InterruptedException ex) {
66	<	fail("unexpected exception");
67	<	}
68	<	}
69	<
70	<	public void testExchange1_InterruptedException(){
71	<	final Exchanger e = new Exchanger();
72	<	Thread t = new Thread(new Runnable() {
73	<	public void run(){
74	<	try{
75	<	e.exchange(one);
76	<	fail("should throw");
77	<	}catch(InterruptedException success){
78	<	}
79	<	}
80	<	});
81	<	try{
82	<	t.start();
83	<	Thread.sleep(SHORT_DELAY_MS);
84	<	t.interrupt();
85	<	t.join();
86	<	} catch(InterruptedException ex) {
87	<	fail("unexpected exception");
88	<	}
89	<	}
90	<
91	<	public void testExchange2_InterruptedException(){
92	<	final Exchanger e = new Exchanger();
93	<	Thread t = new Thread(new Runnable() {
94	<	public void run(){
95	<	try{
96	<	e.exchange(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
97	<	fail("should throw");
98	<	} catch(InterruptedException success){
99	<	} catch(Exception e2){
100	<	fail("should throw IE");
101	<	}
102	<	}
103	<	});
104	<	try{
105	<	t.start();
106	<	t.interrupt();
107	<	t.join();
108	<	} catch(InterruptedException ex){
109	<	fail("unexpected exception");
110	<	}
111	<	}
112	<
113	<	public void testExchange3_TimeOutException(){
114	<	final Exchanger e = new Exchanger();
115	<	Thread t = new Thread(new Runnable() {
116	<	public void run(){
117	<	try{
118	<	e.exchange(null, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
119	<	fail("should throw");
120	<	}catch(TimeoutException success){}
121	<	catch(InterruptedException e2){
122	<	fail("should throw TOE");
123	<	}
124	<	}
125	<	});
126	<	try{
127	<	t.start();
128	<	t.join();
129	<	} catch(InterruptedException ex){
130	<	fail("unexpected exception");
131	<	}
27	>	/**
28	>	* exchange exchanges objects across two threads
29	>	*/
30	>	public void testExchange() {
31	>	final Exchanger e = new Exchanger();
32	>	Thread t1 = newStartedThread(new CheckedRunnable() {
33	>	public void realRun() throws InterruptedException {
34	>	assertSame(one, e.exchange(two));
35	>	assertSame(two, e.exchange(one));
36	>	}});
37	>	Thread t2 = newStartedThread(new CheckedRunnable() {
38	>	public void realRun() throws InterruptedException {
39	>	assertSame(two, e.exchange(one));
40	>	assertSame(one, e.exchange(two));
41	>	}});
42	>
43	>	awaitTermination(t1);
44	>	awaitTermination(t2);
45	>	}
46	>
47	>	/**
48	>	* timed exchange exchanges objects across two threads
49	>	*/
50	>	public void testTimedExchange() {
51	>	final Exchanger e = new Exchanger();
52	>	Thread t1 = newStartedThread(new CheckedRunnable() {
53	>	public void realRun() throws Exception {
54	>	assertSame(one, e.exchange(two, LONG_DELAY_MS, MILLISECONDS));
55	>	assertSame(two, e.exchange(one, LONG_DELAY_MS, MILLISECONDS));
56	>	}});
57	>	Thread t2 = newStartedThread(new CheckedRunnable() {
58	>	public void realRun() throws Exception {
59	>	assertSame(two, e.exchange(one, LONG_DELAY_MS, MILLISECONDS));
60	>	assertSame(one, e.exchange(two, LONG_DELAY_MS, MILLISECONDS));
61	>	}});
62	>
63	>	awaitTermination(t1);
64	>	awaitTermination(t2);
65	>	}
66	>
67	>	/**
68	>	* interrupt during wait for exchange throws IE
69	>	*/
70	>	public void testExchange_InterruptedException() {
71	>	final Exchanger e = new Exchanger();
72	>	final CountDownLatch threadStarted = new CountDownLatch(1);
73	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
74	>	public void realRun() throws InterruptedException {
75	>	threadStarted.countDown();
76	>	e.exchange(one);
77	>	}});
78	>
79	>	await(threadStarted);
80	>	t.interrupt();
81	>	awaitTermination(t);
82	>	}
83	>
84	>	/**
85	>	* interrupt during wait for timed exchange throws IE
86	>	*/
87	>	public void testTimedExchange_InterruptedException() {
88	>	final Exchanger e = new Exchanger();
89	>	final CountDownLatch threadStarted = new CountDownLatch(1);
90	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
91	>	public void realRun() throws Exception {
92	>	threadStarted.countDown();
93	>	e.exchange(null, LONG_DELAY_MS, MILLISECONDS);
94	>	}});
95	>
96	>	await(threadStarted);
97	>	t.interrupt();
98	>	awaitTermination(t);
99	>	}
100	>
101	>	/**
102	>	* timeout during wait for timed exchange throws TimeoutException
103	>	*/
104	>	public void testExchange_TimeoutException() {
105	>	final Exchanger e = new Exchanger();
106	>	Thread t = newStartedThread(new CheckedRunnable() {
107	>	public void realRun() throws Exception {
108	>	long startTime = System.nanoTime();
109	>	try {
110	>	e.exchange(null, timeoutMillis(), MILLISECONDS);
111	>	shouldThrow();
112	>	} catch (TimeoutException success) {}
113	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
114	>	}});
115	>
116	>	awaitTermination(t);
117	>	}
118	>
119	>	/**
120	>	* If one exchanging thread is interrupted, another succeeds.
121	>	*/
122	>	public void testReplacementAfterExchange() {
123	>	final Exchanger e = new Exchanger();
124	>	final CountDownLatch exchanged = new CountDownLatch(2);
125	>	final CountDownLatch interrupted = new CountDownLatch(1);
126	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
127	>	public void realRun() throws InterruptedException {
128	>	assertSame(two, e.exchange(one));
129	>	exchanged.countDown();
130	>	e.exchange(two);
131	>	}});
132	>	Thread t2 = newStartedThread(new CheckedRunnable() {
133	>	public void realRun() throws InterruptedException {
134	>	assertSame(one, e.exchange(two));
135	>	exchanged.countDown();
136	>	await(interrupted);
137	>	assertSame(three, e.exchange(one));
138	>	}});
139	>	Thread t3 = newStartedThread(new CheckedRunnable() {
140	>	public void realRun() throws InterruptedException {
141	>	await(interrupted);
142	>	assertSame(one, e.exchange(three));
143	>	}});
144	>
145	>	await(exchanged);
146	>	t1.interrupt();
147	>	awaitTermination(t1);
148	>	interrupted.countDown();
149	>	awaitTermination(t2);
150	>	awaitTermination(t3);
151		}
152	+
153		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines