93 |
|
* compareAndSet in one thread enables another waiting for reference value |
94 |
|
* to succeed |
95 |
|
*/ |
96 |
< |
public void testCompareAndSetInMultipleThreads() { |
96 |
> |
public void testCompareAndSetInMultipleThreads() throws Exception { |
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 |
< |
} |
102 |
> |
|
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 |
|
|
111 |
|
/** |
112 |
|
* compareAndSet in one thread enables another waiting for stamp value |
113 |
|
* to succeed |
114 |
|
*/ |
115 |
< |
public void testCompareAndSetInMultipleThreads2() { |
115 |
> |
public void testCompareAndSetInMultipleThreads2() throws Exception { |
116 |
|
final AtomicStampedReference ai = new AtomicStampedReference(one, 0); |
117 |
|
Thread t = new Thread(new Runnable() { |
118 |
|
public void run() { |
119 |
|
while (!ai.compareAndSet(one, one, 1, 2)) Thread.yield(); |
120 |
|
}}); |
121 |
< |
try { |
122 |
< |
t.start(); |
123 |
< |
assertTrue(ai.compareAndSet(one, one, 0, 1)); |
124 |
< |
t.join(LONG_DELAY_MS); |
125 |
< |
assertFalse(t.isAlive()); |
126 |
< |
assertEquals(ai.getReference(), one); |
127 |
< |
assertEquals(ai.getStamp(), 2); |
132 |
< |
} |
133 |
< |
catch (Exception e) { |
134 |
< |
unexpectedException(); |
135 |
< |
} |
121 |
> |
|
122 |
> |
t.start(); |
123 |
> |
assertTrue(ai.compareAndSet(one, one, 0, 1)); |
124 |
> |
t.join(LONG_DELAY_MS); |
125 |
> |
assertFalse(t.isAlive()); |
126 |
> |
assertEquals(ai.getReference(), one); |
127 |
> |
assertEquals(ai.getStamp(), 2); |
128 |
|
} |
129 |
|
|
130 |
|
/** |