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Comparing jsr166/src/test/tck/AtomicStampedReferenceTest.java (file contents):
Revision 1.11 by jsr166, Tue Nov 17 03:12:51 2009 UTC vs.
Revision 1.22 by jsr166, Wed Dec 31 19:21:20 2014 UTC

#	Line 1 | Line 1
1		/*
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
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.*;
9	>	import java.util.concurrent.atomic.AtomicStampedReference;
10	>
11	>	import junit.framework.Test;
12	>	import junit.framework.TestSuite;
13
14		public class AtomicStampedReferenceTest extends JSR166TestCase {
15	<	public static void main (String[] args) {
16	<	junit.textui.TestRunner.run (suite());
15	>	public static void main(String[] args) {
16	>	junit.textui.TestRunner.run(suite());
17		}
18		public static Test suite() {
19		return new TestSuite(AtomicStampedReferenceTest.class);
#	Line 22 | Line 24 | public class AtomicStampedReferenceTest
24		*/
25		public void testConstructor() {
26		AtomicStampedReference ai = new AtomicStampedReference(one, 0);
27	<	assertEquals(one,ai.getReference());
28	<	assertEquals(0, ai.getStamp());
27	>	assertSame(one, ai.getReference());
28	>	assertEquals(0, ai.getStamp());
29		AtomicStampedReference a2 = new AtomicStampedReference(null, 1);
30	<	assertNull(a2.getReference());
31	<	assertEquals(1, a2.getStamp());
30	<
30	>	assertNull(a2.getReference());
31	>	assertEquals(1, a2.getStamp());
32		}
33
34		/**
35	<	*  get returns the last values of reference and stamp set
35	>	* get returns the last values of reference and stamp set
36		*/
37		public void testGetSet() {
38		int[] mark = new int[1];
39		AtomicStampedReference ai = new AtomicStampedReference(one, 0);
40	<	assertEquals(one,ai.getReference());
41	<	assertEquals(0, ai.getStamp());
42	<	assertEquals(one, ai.get(mark));
40	>	assertSame(one, ai.getReference());
41	>	assertEquals(0, ai.getStamp());
42	>	assertSame(one, ai.get(mark));
43		assertEquals(0, mark[0]);
44	<	ai.set(two, 0);
45	<	assertEquals(two,ai.getReference());
46	<	assertEquals(0, ai.getStamp());
47	<	assertEquals(two, ai.get(mark));
44	>	ai.set(two, 0);
45	>	assertSame(two, ai.getReference());
46	>	assertEquals(0, ai.getStamp());
47	>	assertSame(two, ai.get(mark));
48		assertEquals(0, mark[0]);
49	<	ai.set(one, 1);
50	<	assertEquals(one,ai.getReference());
51	<	assertEquals(1, ai.getStamp());
52	<	assertEquals(one, ai.get(mark));
53	<	assertEquals(1,mark[0]);
49	>	ai.set(one, 1);
50	>	assertSame(one, ai.getReference());
51	>	assertEquals(1, ai.getStamp());
52	>	assertSame(one, ai.get(mark));
53	>	assertEquals(1, mark[0]);
54		}
55
56		/**
57	<	*  attemptStamp succeeds in single thread
57	>	* attemptStamp succeeds in single thread
58		*/
59		public void testAttemptStamp() {
60		int[] mark = new int[1];
61		AtomicStampedReference ai = new AtomicStampedReference(one, 0);
62		assertEquals(0, ai.getStamp());
63		assertTrue(ai.attemptStamp(one, 1));
64	<	assertEquals(1, ai.getStamp());
65	<	assertEquals(one, ai.get(mark));
64	>	assertEquals(1, ai.getStamp());
65	>	assertSame(one, ai.get(mark));
66		assertEquals(1, mark[0]);
67		}
68
#	Line 72 | Line 73 | public class AtomicStampedReferenceTest
73		public void testCompareAndSet() {
74		int[] mark = new int[1];
75		AtomicStampedReference ai = new AtomicStampedReference(one, 0);
76	<	assertEquals(one, ai.get(mark));
76	>	assertSame(one, ai.get(mark));
77		assertEquals(0, ai.getStamp());
78	<	assertEquals(0, mark[0]);
78	>	assertEquals(0, mark[0]);
79
80		assertTrue(ai.compareAndSet(one, two, 0, 0));
81	<	assertEquals(two, ai.get(mark));
82	<	assertEquals(0, mark[0]);
81	>	assertSame(two, ai.get(mark));
82	>	assertEquals(0, mark[0]);
83
84		assertTrue(ai.compareAndSet(two, m3, 0, 1));
85	<	assertEquals(m3, ai.get(mark));
86	<	assertEquals(1, mark[0]);
85	>	assertSame(m3, ai.get(mark));
86	>	assertEquals(1, mark[0]);
87
88		assertFalse(ai.compareAndSet(two, m3, 1, 1));
89	<	assertEquals(m3, ai.get(mark));
90	<	assertEquals(1, mark[0]);
89	>	assertSame(m3, ai.get(mark));
90	>	assertEquals(1, mark[0]);
91		}
92
93		/**
#	Line 95 | Line 96 | public class AtomicStampedReferenceTest
96		*/
97		public void testCompareAndSetInMultipleThreads() throws Exception {
98		final AtomicStampedReference ai = new AtomicStampedReference(one, 0);
99	<	Thread t = new Thread(new Runnable() {
100	<	public void run() {
101	<	while (!ai.compareAndSet(two, three, 0, 0)) Thread.yield();
102	<	}});
99	>	Thread t = new Thread(new CheckedRunnable() {
100	>	public void realRun() {
101	>	while (!ai.compareAndSet(two, three, 0, 0))
102	>	Thread.yield();
103	>	}});
104
105		t.start();
106		assertTrue(ai.compareAndSet(one, two, 0, 0));
107		t.join(LONG_DELAY_MS);
108		assertFalse(t.isAlive());
109	<	assertEquals(ai.getReference(), three);
110	<	assertEquals(ai.getStamp(), 0);
109	>	assertSame(three, ai.getReference());
110	>	assertEquals(0, ai.getStamp());
111		}
112
113		/**
#	Line 114 | Line 116 | public class AtomicStampedReferenceTest
116		*/
117		public void testCompareAndSetInMultipleThreads2() throws Exception {
118		final AtomicStampedReference ai = new AtomicStampedReference(one, 0);
119	<	Thread t = new Thread(new Runnable() {
120	<	public void run() {
121	<	while (!ai.compareAndSet(one, one, 1, 2)) Thread.yield();
122	<	}});
119	>	Thread t = new Thread(new CheckedRunnable() {
120	>	public void realRun() {
121	>	while (!ai.compareAndSet(one, one, 1, 2))
122	>	Thread.yield();
123	>	}});
124
125		t.start();
126		assertTrue(ai.compareAndSet(one, one, 0, 1));
127		t.join(LONG_DELAY_MS);
128		assertFalse(t.isAlive());
129	<	assertEquals(ai.getReference(), one);
130	<	assertEquals(ai.getStamp(), 2);
129	>	assertSame(one, ai.getReference());
130	>	assertEquals(2, ai.getStamp());
131		}
132
133		/**
#	Line 134 | Line 137 | public class AtomicStampedReferenceTest
137		public void testWeakCompareAndSet() {
138		int[] mark = new int[1];
139		AtomicStampedReference ai = new AtomicStampedReference(one, 0);
140	<	assertEquals(one, ai.get(mark));
141	<	assertEquals(0, ai.getStamp ());
142	<	assertEquals(0, mark[0]);
143	<
144	<	while (!ai.weakCompareAndSet(one, two, 0, 0));
145	<	assertEquals(two, ai.get(mark));
146	<	assertEquals(0, mark[0]);
147	<
148	<	while (!ai.weakCompareAndSet(two, m3, 0, 1));
149	<	assertEquals(m3, ai.get(mark));
150	<	assertEquals(1, mark[0]);
140	>	assertSame(one, ai.get(mark));
141	>	assertEquals(0, ai.getStamp());
142	>	assertEquals(0, mark[0]);
143	>
144	>	do {} while (!ai.weakCompareAndSet(one, two, 0, 0));
145	>	assertSame(two, ai.get(mark));
146	>	assertEquals(0, mark[0]);
147	>
148	>	do {} while (!ai.weakCompareAndSet(two, m3, 0, 1));
149	>	assertSame(m3, ai.get(mark));
150	>	assertEquals(1, mark[0]);
151		}
152
153		}

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