| 1 |
dl |
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. |
| 6 |
|
|
*/ |
| 7 |
|
|
|
| 8 |
|
|
import junit.framework.*; |
| 9 |
|
|
import java.util.concurrent.atomic.*; |
| 10 |
|
|
|
| 11 |
dl |
1.2 |
public class AtomicMarkableReferenceTest extends JSR166TestCase{ |
| 12 |
dl |
1.1 |
public static void main (String[] args) { |
| 13 |
|
|
junit.textui.TestRunner.run (suite()); |
| 14 |
|
|
} |
| 15 |
|
|
public static Test suite() { |
| 16 |
|
|
return new TestSuite(AtomicMarkableReferenceTest.class); |
| 17 |
|
|
} |
| 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); |
| 23 |
|
|
|
| 24 |
|
|
public void testConstructor(){ |
| 25 |
|
|
AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
| 26 |
|
|
assertEquals(one,ai.getReference()); |
| 27 |
|
|
assertFalse(ai.isMarked()); |
| 28 |
|
|
AtomicMarkableReference a2 = new AtomicMarkableReference(null, true); |
| 29 |
|
|
assertNull(a2.getReference()); |
| 30 |
|
|
assertTrue(a2.isMarked()); |
| 31 |
|
|
|
| 32 |
|
|
} |
| 33 |
|
|
|
| 34 |
|
|
public void testGetSet(){ |
| 35 |
|
|
boolean[] mark = new boolean[1]; |
| 36 |
|
|
AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
| 37 |
|
|
assertEquals(one,ai.getReference()); |
| 38 |
|
|
assertFalse(ai.isMarked()); |
| 39 |
|
|
assertEquals(one, ai.get(mark)); |
| 40 |
|
|
assertFalse(mark[0]); |
| 41 |
|
|
ai.set(two, false); |
| 42 |
|
|
assertEquals(two,ai.getReference()); |
| 43 |
|
|
assertFalse(ai.isMarked()); |
| 44 |
|
|
assertEquals(two, ai.get(mark)); |
| 45 |
|
|
assertFalse(mark[0]); |
| 46 |
|
|
ai.set(one, true); |
| 47 |
|
|
assertEquals(one,ai.getReference()); |
| 48 |
|
|
assertTrue(ai.isMarked()); |
| 49 |
|
|
assertEquals(one, ai.get(mark)); |
| 50 |
|
|
assertTrue(mark[0]); |
| 51 |
|
|
} |
| 52 |
|
|
|
| 53 |
|
|
public void testAttemptMark(){ |
| 54 |
|
|
boolean[] mark = new boolean[1]; |
| 55 |
|
|
AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
| 56 |
|
|
assertFalse(ai.isMarked()); |
| 57 |
|
|
assertTrue(ai.attemptMark(one, true)); |
| 58 |
|
|
assertTrue(ai.isMarked()); |
| 59 |
|
|
assertEquals(one, ai.get(mark)); |
| 60 |
|
|
assertTrue(mark[0]); |
| 61 |
|
|
} |
| 62 |
|
|
|
| 63 |
|
|
public void testCompareAndSet(){ |
| 64 |
|
|
boolean[] mark = new boolean[1]; |
| 65 |
|
|
AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
| 66 |
|
|
assertEquals(one, ai.get(mark)); |
| 67 |
|
|
assertFalse(ai.isMarked()); |
| 68 |
|
|
assertFalse(mark[0]); |
| 69 |
|
|
|
| 70 |
|
|
assertTrue(ai.compareAndSet(one, two, false, false)); |
| 71 |
|
|
assertEquals(two, ai.get(mark)); |
| 72 |
|
|
assertFalse(mark[0]); |
| 73 |
|
|
|
| 74 |
|
|
assertTrue(ai.compareAndSet(two, m3, false, true)); |
| 75 |
|
|
assertEquals(m3, ai.get(mark)); |
| 76 |
|
|
assertTrue(mark[0]); |
| 77 |
|
|
|
| 78 |
|
|
assertFalse(ai.compareAndSet(two, m3, true, true)); |
| 79 |
|
|
assertEquals(m3, ai.get(mark)); |
| 80 |
|
|
assertTrue(mark[0]); |
| 81 |
|
|
} |
| 82 |
|
|
|
| 83 |
|
|
public void testWeakCompareAndSet(){ |
| 84 |
|
|
boolean[] mark = new boolean[1]; |
| 85 |
|
|
AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
| 86 |
|
|
assertEquals(one, ai.get(mark)); |
| 87 |
|
|
assertFalse(ai.isMarked()); |
| 88 |
|
|
assertFalse(mark[0]); |
| 89 |
|
|
|
| 90 |
|
|
while(!ai.weakCompareAndSet(one, two, false, false)); |
| 91 |
|
|
assertEquals(two, ai.get(mark)); |
| 92 |
|
|
assertFalse(mark[0]); |
| 93 |
|
|
|
| 94 |
|
|
while(!ai.weakCompareAndSet(two, m3, false, true)); |
| 95 |
|
|
assertEquals(m3, ai.get(mark)); |
| 96 |
|
|
assertTrue(mark[0]); |
| 97 |
|
|
} |
| 98 |
|
|
|
| 99 |
|
|
} |
