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 java.util.concurrent.atomic.*; |
29 |
|
try{ |
30 |
|
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer> |
31 |
|
a = AtomicReferenceFieldUpdater.newUpdater |
32 |
< |
(getClass(), Integer.class, "y"); |
32 |
> |
(AtomicReferenceFieldUpdaterTest.class, Integer.class, "y"); |
33 |
|
shouldThrow(); |
34 |
|
} |
35 |
|
catch (RuntimeException rt) {} |
43 |
|
try{ |
44 |
|
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer> |
45 |
|
a = AtomicReferenceFieldUpdater.newUpdater |
46 |
< |
(getClass(), Integer.class, "z"); |
46 |
> |
(AtomicReferenceFieldUpdaterTest.class, Integer.class, "z"); |
47 |
|
shouldThrow(); |
48 |
|
} |
49 |
|
catch (RuntimeException rt) {} |
56 |
|
try{ |
57 |
|
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer> |
58 |
|
a = AtomicReferenceFieldUpdater.newUpdater |
59 |
< |
(getClass(), Integer.class, "w"); |
59 |
> |
(AtomicReferenceFieldUpdaterTest.class, Integer.class, "w"); |
60 |
|
shouldThrow(); |
61 |
|
} |
62 |
|
catch (RuntimeException rt) {} |
66 |
|
* get returns the last value set or assigned |
67 |
|
*/ |
68 |
|
public void testGetSet(){ |
69 |
< |
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x"); |
69 |
> |
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); |
70 |
|
x = one; |
71 |
|
assertEquals(one,a.get(this)); |
72 |
|
a.set(this,two); |
79 |
|
* compareAndSet succeeds in changing value if equal to expected else fails |
80 |
|
*/ |
81 |
|
public void testCompareAndSet(){ |
82 |
< |
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x"); |
82 |
> |
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); |
83 |
|
x = one; |
84 |
|
assertTrue(a.compareAndSet(this,one,two)); |
85 |
|
assertTrue(a.compareAndSet(this,two,m4)); |
96 |
|
*/ |
97 |
|
public void testCompareAndSetInMultipleThreads() { |
98 |
|
x = one; |
99 |
< |
final AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x"); |
99 |
> |
final AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); |
100 |
|
|
101 |
|
Thread t = new Thread(new Runnable() { |
102 |
|
public void run() { |
119 |
|
* to expected |
120 |
|
*/ |
121 |
|
public void testWeakCompareAndSet(){ |
122 |
< |
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x"); |
122 |
> |
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); |
123 |
|
x = one; |
124 |
|
while(!a.weakCompareAndSet(this,one,two)); |
125 |
|
while(!a.weakCompareAndSet(this,two,m4)); |
132 |
|
* getAndSet returns previous value and sets to given value |
133 |
|
*/ |
134 |
|
public void testGetAndSet(){ |
135 |
< |
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x"); |
135 |
> |
AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); |
136 |
|
x = one; |
137 |
|
assertEquals(one,a.getAndSet(this, zero)); |
138 |
|
assertEquals(zero,a.getAndSet(this,m10)); |