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 1.2 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.25 by jsr166, Sun May 14 01:37:52 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	<
19	>
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	+	/**
28	+	* exchange exchanges objects across two threads
29	+	*/
30		public void testExchange() {
31		final Exchanger e = new Exchanger();
32	<	Thread t1 = new Thread(new Runnable(){
33	<	public void run(){
34	<	try {
35	<	Object v = e.exchange(one);
36	<	threadAssertEquals(v, two);
37	<	Object w = e.exchange(v);
38	<	threadAssertEquals(w, one);
39	<	} catch(InterruptedException e){
40	<	threadFail("unexpected exception");
41	<	}
42	<	}
43	<	});
44	<	Thread t2 = new Thread(new Runnable(){
45	<	public void run(){
46	<	try {
47	<	Object v = e.exchange(two);
48	<	threadAssertEquals(v, one);
49	<	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	<
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 = new Thread(new Runnable(){
53	<	public void run(){
54	<	try {
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	<	} catch(InterruptedException e){
60	<	threadFail("unexpected exception");
61	<	} catch(TimeoutException toe) {
62	<	threadFail("unexpected exception");
63	<	}
64	<	}
65	<	});
66	<	Thread t2 = new Thread(new Runnable(){
67	<	public void run(){
68	<	try {
69	<	Object v = e.exchange(two, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
70	<	threadAssertEquals(v, one);
71	<	Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
72	<	threadAssertEquals(w, two);
73	<	} catch(InterruptedException e){
74	<	threadFail("unexpected exception");
75	<	} catch(TimeoutException toe) {
76	<	threadFail("unexpected exception");
77	<	}
78	<	}
79	<	});
80	<	try {
81	<	t1.start();
82	<	t2.start();
83	<	t1.join();
84	<	t2.join();
85	<	} catch(InterruptedException ex) {
86	<	fail("unexpected exception");
87	<	}
88	<	}
89	<
90	<	public void testExchange_InterruptedException(){
91	<	final Exchanger e = new Exchanger();
92	<	Thread t = new Thread(new Runnable() {
93	<	public void run(){
94	<	try {
95	<	e.exchange(one);
96	<	threadFail("should throw");
97	<	} catch(InterruptedException success){
98	<	}
99	<	}
100	<	});
101	<	try {
102	<	t.start();
103	<	Thread.sleep(SHORT_DELAY_MS);
104	<	t.interrupt();
105	<	t.join();
106	<	} catch(InterruptedException ex) {
107	<	fail("unexpected exception");
108	<	}
109	<	}
110	<
111	<	public void testTimedExchange_InterruptedException(){
112	<	final Exchanger e = new Exchanger();
113	<	Thread t = new Thread(new Runnable() {
114	<	public void run(){
115	<	try {
116	<	e.exchange(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
117	<	threadFail("should throw");
118	<	} catch(InterruptedException success){
119	<	} catch(Exception e2){
120	<	threadFail("should throw IE");
121	<	}
122	<	}
123	<	});
124	<	try {
125	<	t.start();
126	<	t.interrupt();
127	<	t.join();
128	<	} catch(InterruptedException ex){
129	<	fail("unexpected exception");
130	<	}
131	<	}
132	<
133	<	public void testExchange_TimeOutException(){
134	<	final Exchanger e = new Exchanger();
135	<	Thread t = new Thread(new Runnable() {
136	<	public void run(){
137	<	try {
138	<	e.exchange(null, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
139	<	threadFail("should throw");
140	<	} catch(TimeoutException success){
141	<	} catch(InterruptedException e2){
142	<	threadFail("should throw TOE");
143	<	}
144	<	}
145	<	});
146	<	try {
147	<	t.start();
148	<	t.join();
149	<	} catch(InterruptedException ex){
150	<	fail("unexpected exception");
158	<	}
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 InterruptedException
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 InterruptedException
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