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Comparing jsr166/src/test/tck/AtomicMarkableReferenceTest.java (file contents):
Revision 1.4 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.13 by jsr166, Tue Dec 1 09:56:28 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.*;
10   import java.util.concurrent.atomic.*;
11  
12 < public class AtomicMarkableReferenceTest extends JSR166TestCase{
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      }
19 <    
19 >
20      /**
21 <     *  constructeor initializes to given reference and mark
21 >     *  constructor initializes to given reference and mark
22       */
23 <    public void testConstructor(){
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());
29 <
28 >        assertNull(a2.getReference());
29 >        assertTrue(a2.isMarked());
30      }
31  
32      /**
33       *  get returns the last values of reference and mark set
34       */
35 <    public void testGetSet(){
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      /**
55       * attemptMark succeeds in single thread
56       */
57 <    public void testAttemptMark(){
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  
# Line 68 | Line 68 | public class AtomicMarkableReferenceTest
68       * compareAndSet succeeds in changing values if equal to expected reference
69       * and mark else fails
70       */
71 <    public void testCompareAndSet(){
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      /**
92       * compareAndSet in one thread enables another waiting for reference value
93       * to succeed
94       */
95 <    public void testCompareAndSetInMultipleThreads() {
95 >    public void testCompareAndSetInMultipleThreads() throws Exception {
96          final AtomicMarkableReference ai = new AtomicMarkableReference(one, false);
97 <        Thread t = new Thread(new Runnable() {
98 <                public void run() {
99 <                    while(!ai.compareAndSet(two, three, false, false)) Thread.yield();
100 <                }});
101 <        try {
102 <            t.start();
103 <            assertTrue(ai.compareAndSet(one, two, false, false));
104 <            t.join(LONG_DELAY_MS);
105 <            assertFalse(t.isAlive());
106 <            assertEquals(ai.getReference(), three);
107 <            assertFalse(ai.isMarked());
108 <        }
109 <        catch(Exception e) {
110 <            unexpectedException();
111 <        }
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() {
115 >    public void testCompareAndSetInMultipleThreads2() throws Exception {
116          final AtomicMarkableReference ai = new AtomicMarkableReference(one, false);
117 <        Thread t = new Thread(new Runnable() {
118 <                public void run() {
119 <                    while(!ai.compareAndSet(one, one, true, false)) Thread.yield();
120 <                }});
121 <        try {
122 <            t.start();
123 <            assertTrue(ai.compareAndSet(one, one, false, true));
124 <            t.join(LONG_DELAY_MS);
125 <            assertFalse(t.isAlive());
126 <            assertEquals(ai.getReference(), one);
127 <            assertFalse(ai.isMarked());
128 <        }
132 <        catch(Exception e) {
133 <            unexpectedException();
134 <        }
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
133 >     * to expected
134       */
135 <    public void testWeakCompareAndSet(){
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   }

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