ViewVC Help

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

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

Comparing jsr166/src/test/tck/AtomicMarkableReferenceTest.java (file contents):
Revision 1.2 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.18 by jsr166, Fri Jun 10 20:01:21 2011 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.concurrent.atomic.*;
10	>	import java.util.concurrent.atomic.AtomicMarkableReference;
11
12	<	public class AtomicMarkableReferenceTest extends JSR166TestCase{
13	<	public static void main (String[] args) {
14	<	junit.textui.TestRunner.run (suite());
12	>	public class AtomicMarkableReferenceTest extends JSR166TestCase {
13	>	public static void main(String[] args) {
14	>	junit.textui.TestRunner.run(suite());
15		}
16		public static Test suite() {
17		return new TestSuite(AtomicMarkableReferenceTest.class);
18		}
18	–
19	–	static final Integer zero = new Integer(0);
20	–	static final Integer one = new Integer(1);
21	–	static final Integer two = new Integer(2);
22	–	static final Integer m3  = new Integer(-3);
19
20	<	public void testConstructor(){
20	>	/**
21	>	* constructor initializes to given reference and mark
22	>	*/
23	>	public void testConstructor() {
24		AtomicMarkableReference ai = new AtomicMarkableReference(one, false);
25	<	assertEquals(one,ai.getReference());
26	<	assertFalse(ai.isMarked());
25	>	assertSame(one, ai.getReference());
26	>	assertFalse(ai.isMarked());
27		AtomicMarkableReference a2 = new AtomicMarkableReference(null, true);
28	<	assertNull(a2.getReference());
29	<	assertTrue(a2.isMarked());
31	<
28	>	assertNull(a2.getReference());
29	>	assertTrue(a2.isMarked());
30		}
31
32	<	public void testGetSet(){
32	>	/**
33	>	* get returns the last values of reference and mark set
34	>	*/
35	>	public void testGetSet() {
36		boolean[] mark = new boolean[1];
37		AtomicMarkableReference ai = new AtomicMarkableReference(one, false);
38	<	assertEquals(one,ai.getReference());
39	<	assertFalse(ai.isMarked());
40	<	assertEquals(one, ai.get(mark));
41	<	assertFalse(mark[0]);
42	<	ai.set(two, false);
43	<	assertEquals(two,ai.getReference());
44	<	assertFalse(ai.isMarked());
45	<	assertEquals(two, ai.get(mark));
46	<	assertFalse(mark[0]);
47	<	ai.set(one, true);
48	<	assertEquals(one,ai.getReference());
49	<	assertTrue(ai.isMarked());
50	<	assertEquals(one, ai.get(mark));
38	>	assertSame(one, ai.getReference());
39	>	assertFalse(ai.isMarked());
40	>	assertSame(one, ai.get(mark));
41	>	assertFalse(mark[0]);
42	>	ai.set(two, false);
43	>	assertSame(two, ai.getReference());
44	>	assertFalse(ai.isMarked());
45	>	assertSame(two, ai.get(mark));
46	>	assertFalse(mark[0]);
47	>	ai.set(one, true);
48	>	assertSame(one, ai.getReference());
49	>	assertTrue(ai.isMarked());
50	>	assertSame(one, ai.get(mark));
51		assertTrue(mark[0]);
52		}
53
54	<	public void testAttemptMark(){
54	>	/**
55	>	* attemptMark succeeds in single thread
56	>	*/
57	>	public void testAttemptMark() {
58		boolean[] mark = new boolean[1];
59		AtomicMarkableReference ai = new AtomicMarkableReference(one, false);
60		assertFalse(ai.isMarked());
61		assertTrue(ai.attemptMark(one, true));
62	<	assertTrue(ai.isMarked());
63	<	assertEquals(one, ai.get(mark));
62	>	assertTrue(ai.isMarked());
63	>	assertSame(one, ai.get(mark));
64		assertTrue(mark[0]);
65		}
66
67	<	public void testCompareAndSet(){
67	>	/**
68	>	* compareAndSet succeeds in changing values if equal to expected reference
69	>	* and mark else fails
70	>	*/
71	>	public void testCompareAndSet() {
72		boolean[] mark = new boolean[1];
73		AtomicMarkableReference ai = new AtomicMarkableReference(one, false);
74	<	assertEquals(one, ai.get(mark));
74	>	assertSame(one, ai.get(mark));
75		assertFalse(ai.isMarked());
76	<	assertFalse(mark[0]);
76	>	assertFalse(mark[0]);
77
78		assertTrue(ai.compareAndSet(one, two, false, false));
79	<	assertEquals(two, ai.get(mark));
80	<	assertFalse(mark[0]);
79	>	assertSame(two, ai.get(mark));
80	>	assertFalse(mark[0]);
81
82		assertTrue(ai.compareAndSet(two, m3, false, true));
83	<	assertEquals(m3, ai.get(mark));
84	<	assertTrue(mark[0]);
83	>	assertSame(m3, ai.get(mark));
84	>	assertTrue(mark[0]);
85
86		assertFalse(ai.compareAndSet(two, m3, true, true));
87	<	assertEquals(m3, ai.get(mark));
88	<	assertTrue(mark[0]);
87	>	assertSame(m3, ai.get(mark));
88	>	assertTrue(mark[0]);
89		}
90
91	<	public void testWeakCompareAndSet(){
91	>	/**
92	>	* compareAndSet in one thread enables another waiting for reference value
93	>	* to succeed
94	>	*/
95	>	public void testCompareAndSetInMultipleThreads() throws Exception {
96	>	final AtomicMarkableReference ai = new AtomicMarkableReference(one, false);
97	>	Thread t = new Thread(new CheckedRunnable() {
98	>	public void realRun() {
99	>	while (!ai.compareAndSet(two, three, false, false))
100	>	Thread.yield();
101	>	}});
102	>
103	>	t.start();
104	>	assertTrue(ai.compareAndSet(one, two, false, false));
105	>	t.join(LONG_DELAY_MS);
106	>	assertFalse(t.isAlive());
107	>	assertSame(ai.getReference(), three);
108	>	assertFalse(ai.isMarked());
109	>	}
110	>
111	>	/**
112	>	* compareAndSet in one thread enables another waiting for mark value
113	>	* to succeed
114	>	*/
115	>	public void testCompareAndSetInMultipleThreads2() throws Exception {
116	>	final AtomicMarkableReference ai = new AtomicMarkableReference(one, false);
117	>	Thread t = new Thread(new CheckedRunnable() {
118	>	public void realRun() {
119	>	while (!ai.compareAndSet(one, one, true, false))
120	>	Thread.yield();
121	>	}});
122	>
123	>	t.start();
124	>	assertTrue(ai.compareAndSet(one, one, false, true));
125	>	t.join(LONG_DELAY_MS);
126	>	assertFalse(t.isAlive());
127	>	assertSame(ai.getReference(), one);
128	>	assertFalse(ai.isMarked());
129	>	}
130	>
131	>	/**
132	>	* repeated weakCompareAndSet succeeds in changing values when equal
133	>	* to expected
134	>	*/
135	>	public void testWeakCompareAndSet() {
136		boolean[] mark = new boolean[1];
137		AtomicMarkableReference ai = new AtomicMarkableReference(one, false);
138	<	assertEquals(one, ai.get(mark));
138	>	assertSame(one, ai.get(mark));
139		assertFalse(ai.isMarked());
140	<	assertFalse(mark[0]);
140	>	assertFalse(mark[0]);
141
142	<	while(!ai.weakCompareAndSet(one, two, false, false));
143	<	assertEquals(two, ai.get(mark));
144	<	assertFalse(mark[0]);
142	>	while (!ai.weakCompareAndSet(one, two, false, false));
143	>	assertSame(two, ai.get(mark));
144	>	assertFalse(mark[0]);
145
146	<	while(!ai.weakCompareAndSet(two, m3, false, true));
147	<	assertEquals(m3, ai.get(mark));
148	<	assertTrue(mark[0]);
146	>	while (!ai.weakCompareAndSet(two, m3, false, true));
147	>	assertSame(m3, ai.get(mark));
148	>	assertTrue(mark[0]);
149		}
150
151		}

Diff Legend

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