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

Comparing jsr166/src/test/tck/AtomicStampedReferenceTest.java (file contents):
Revision 1.3 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.8 by jsr166, Mon Nov 2 20:28:31 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.*;
#	Line 15 | Line 16 | public class AtomicStampedReferenceTest
16		public static Test suite() {
17		return new TestSuite(AtomicStampedReferenceTest.class);
18		}
19	<
19	>
20		/**
21	<	*
21	>	* constructor initializes to given reference and stamp
22		*/
23		public void testConstructor(){
24		AtomicStampedReference ai = new AtomicStampedReference(one, 0);
#	Line 30 | Line 31 | public class AtomicStampedReferenceTest
31		}
32
33		/**
34	<	*
34	>	*  get returns the last values of reference and stamp set
35		*/
36		public void testGetSet(){
37		int[] mark = new int[1];
#	Line 52 | Line 53 | public class AtomicStampedReferenceTest
53		}
54
55		/**
56	<	*
56	>	*  attemptStamp succeeds in single thread
57		*/
58		public void testAttemptStamp(){
59		int[] mark = new int[1];
#	Line 65 | Line 66 | public class AtomicStampedReferenceTest
66		}
67
68		/**
69	<	*
69	>	* compareAndSet succeeds in changing values if equal to expected reference
70	>	* and stamp else fails
71		*/
72		public void testCompareAndSet(){
73		int[] mark = new int[1];
#	Line 88 | Line 90 | public class AtomicStampedReferenceTest
90		}
91
92		/**
93	<	*
93	>	* compareAndSet in one thread enables another waiting for reference value
94	>	* to succeed
95	>	*/
96	>	public void testCompareAndSetInMultipleThreads() {
97	>	final AtomicStampedReference ai = new AtomicStampedReference(one, 0);
98	>	Thread t = new Thread(new Runnable() {
99	>	public void run() {
100	>	while(!ai.compareAndSet(two, three, 0, 0)) Thread.yield();
101	>	}});
102	>	try {
103	>	t.start();
104	>	assertTrue(ai.compareAndSet(one, two, 0, 0));
105	>	t.join(LONG_DELAY_MS);
106	>	assertFalse(t.isAlive());
107	>	assertEquals(ai.getReference(), three);
108	>	assertEquals(ai.getStamp(), 0);
109	>	}
110	>	catch(Exception e) {
111	>	unexpectedException();
112	>	}
113	>	}
114	>
115	>	/**
116	>	* compareAndSet in one thread enables another waiting for stamp value
117	>	* to succeed
118	>	*/
119	>	public void testCompareAndSetInMultipleThreads2() {
120	>	final AtomicStampedReference ai = new AtomicStampedReference(one, 0);
121	>	Thread t = new Thread(new Runnable() {
122	>	public void run() {
123	>	while(!ai.compareAndSet(one, one, 1, 2)) Thread.yield();
124	>	}});
125	>	try {
126	>	t.start();
127	>	assertTrue(ai.compareAndSet(one, one, 0, 1));
128	>	t.join(LONG_DELAY_MS);
129	>	assertFalse(t.isAlive());
130	>	assertEquals(ai.getReference(), one);
131	>	assertEquals(ai.getStamp(), 2);
132	>	}
133	>	catch(Exception e) {
134	>	unexpectedException();
135	>	}
136	>	}
137	>
138	>	/**
139	>	* repeated weakCompareAndSet succeeds in changing values when equal
140	>	* to expected
141		*/
142		public void testWeakCompareAndSet(){
143		int[] mark = new int[1];

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