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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.concurrent.atomic.AtomicLongFieldUpdater; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
14 |
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public class AtomicLongFieldUpdaterTest extends JSR166TestCase { |
15 |
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volatile long x = 0; |
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< |
int z; |
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> |
protected volatile long protectedField; |
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> |
private volatile long privateField; |
18 |
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long w; |
19 |
< |
|
19 |
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float z; |
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public static void main(String[] args) { |
21 |
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junit.textui.TestRunner.run(suite()); |
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main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(AtomicLongFieldUpdaterTest.class); |
25 |
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} |
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|
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// for testing subclass access |
28 |
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static class AtomicLongFieldUpdaterTestSubclass extends AtomicLongFieldUpdaterTest { |
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public void checkPrivateAccess() { |
30 |
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try { |
31 |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = |
32 |
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AtomicLongFieldUpdater.newUpdater |
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(AtomicLongFieldUpdaterTest.class, "privateField"); |
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shouldThrow(); |
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} catch (RuntimeException success) { |
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assertNotNull(success.getCause()); |
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} |
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} |
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|
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public void checkCompareAndSetProtectedSub() { |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
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a = updaterFor("protectedField"); |
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protectedField = 1; |
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assertTrue(a.compareAndSet(this, 1, 2)); |
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assertTrue(a.compareAndSet(this, 2, -4)); |
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assertEquals(-4, a.get(this)); |
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assertFalse(a.compareAndSet(this, -5, 7)); |
48 |
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assertEquals(-4, a.get(this)); |
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assertTrue(a.compareAndSet(this, -4, 7)); |
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assertEquals(7, a.get(this)); |
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} |
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} |
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|
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static class UnrelatedClass { |
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public void checkPackageAccess(AtomicLongFieldUpdaterTest obj) { |
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obj.x = 72L; |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = |
58 |
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AtomicLongFieldUpdater.newUpdater |
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(AtomicLongFieldUpdaterTest.class, "x"); |
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assertEquals(72L, a.get(obj)); |
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assertTrue(a.compareAndSet(obj, 72L, 73L)); |
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assertEquals(73L, a.get(obj)); |
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} |
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|
65 |
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public void checkPrivateAccess(AtomicLongFieldUpdaterTest obj) { |
66 |
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try { |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = |
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AtomicLongFieldUpdater.newUpdater |
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(AtomicLongFieldUpdaterTest.class, "privateField"); |
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throw new AssertionError("should throw"); |
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} catch (RuntimeException success) { |
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assertNotNull(success.getCause()); |
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} |
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} |
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} |
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|
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> updaterFor(String fieldName) { |
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return AtomicLongFieldUpdater.newUpdater |
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(AtomicLongFieldUpdaterTest.class, fieldName); |
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} |
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|
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/** |
83 |
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* Construction with non-existent field throws RuntimeException |
84 |
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*/ |
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public void testConstructor() { |
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try { |
87 |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
30 |
< |
a = AtomicLongFieldUpdater.newUpdater |
31 |
< |
(AtomicLongFieldUpdaterTest.class, "y"); |
87 |
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updaterFor("y"); |
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shouldThrow(); |
89 |
< |
} catch (RuntimeException success) {} |
89 |
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} catch (RuntimeException success) { |
90 |
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assertNotNull(success.getCause()); |
91 |
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} |
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} |
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|
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/** |
95 |
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* construction with field not of given type throws RuntimeException |
95 |
> |
* construction with field not of given type throws IllegalArgumentException |
96 |
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*/ |
97 |
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public void testConstructor2() { |
98 |
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try { |
99 |
< |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
42 |
< |
a = AtomicLongFieldUpdater.newUpdater |
43 |
< |
(AtomicLongFieldUpdaterTest.class, "z"); |
99 |
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updaterFor("z"); |
100 |
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shouldThrow(); |
101 |
< |
} catch (RuntimeException success) {} |
101 |
> |
} catch (IllegalArgumentException success) {} |
102 |
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} |
103 |
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|
104 |
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/** |
105 |
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* construction with non-volatile field throws RuntimeException |
105 |
> |
* construction with non-volatile field throws IllegalArgumentException |
106 |
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*/ |
107 |
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public void testConstructor3() { |
108 |
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try { |
109 |
< |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
54 |
< |
a = AtomicLongFieldUpdater.newUpdater |
55 |
< |
(AtomicLongFieldUpdaterTest.class, "w"); |
109 |
> |
updaterFor("w"); |
110 |
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shouldThrow(); |
111 |
< |
} catch (RuntimeException success) {} |
111 |
> |
} catch (IllegalArgumentException success) {} |
112 |
> |
} |
113 |
> |
|
114 |
> |
/** |
115 |
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* construction using private field from subclass throws RuntimeException |
116 |
> |
*/ |
117 |
> |
public void testPrivateFieldInSubclass() { |
118 |
> |
AtomicLongFieldUpdaterTestSubclass s = |
119 |
> |
new AtomicLongFieldUpdaterTestSubclass(); |
120 |
> |
s.checkPrivateAccess(); |
121 |
> |
} |
122 |
> |
|
123 |
> |
/** |
124 |
> |
* construction from unrelated class; package access is allowed, |
125 |
> |
* private access is not |
126 |
> |
*/ |
127 |
> |
public void testUnrelatedClassAccess() { |
128 |
> |
new UnrelatedClass().checkPackageAccess(this); |
129 |
> |
new UnrelatedClass().checkPrivateAccess(this); |
130 |
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} |
131 |
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|
132 |
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/** |
134 |
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*/ |
135 |
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public void testGetSet() { |
136 |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
137 |
< |
try { |
66 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
67 |
< |
} catch (RuntimeException ok) { |
68 |
< |
return; |
69 |
< |
} |
137 |
> |
a = updaterFor("x"); |
138 |
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x = 1; |
139 |
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assertEquals(1, a.get(this)); |
140 |
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a.set(this, 2); |
148 |
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*/ |
149 |
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public void testGetLazySet() { |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
151 |
< |
try { |
84 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
85 |
< |
} catch (RuntimeException ok) { |
86 |
< |
return; |
87 |
< |
} |
151 |
> |
a = updaterFor("x"); |
152 |
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x = 1; |
153 |
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assertEquals(1, a.get(this)); |
154 |
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a.lazySet(this, 2); |
162 |
|
*/ |
163 |
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public void testCompareAndSet() { |
164 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
165 |
< |
try { |
102 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
103 |
< |
} catch (RuntimeException ok) { |
104 |
< |
return; |
105 |
< |
} |
165 |
> |
a = updaterFor("x"); |
166 |
|
x = 1; |
167 |
|
assertTrue(a.compareAndSet(this, 1, 2)); |
168 |
|
assertTrue(a.compareAndSet(this, 2, -4)); |
174 |
|
} |
175 |
|
|
176 |
|
/** |
177 |
+ |
* compareAndSet succeeds in changing protected field value if |
178 |
+ |
* equal to expected else fails |
179 |
+ |
*/ |
180 |
+ |
public void testCompareAndSetProtected() { |
181 |
+ |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
182 |
+ |
a = updaterFor("protectedField"); |
183 |
+ |
protectedField = 1; |
184 |
+ |
assertTrue(a.compareAndSet(this, 1, 2)); |
185 |
+ |
assertTrue(a.compareAndSet(this, 2, -4)); |
186 |
+ |
assertEquals(-4, a.get(this)); |
187 |
+ |
assertFalse(a.compareAndSet(this, -5, 7)); |
188 |
+ |
assertEquals(-4, a.get(this)); |
189 |
+ |
assertTrue(a.compareAndSet(this, -4, 7)); |
190 |
+ |
assertEquals(7, a.get(this)); |
191 |
+ |
} |
192 |
+ |
|
193 |
+ |
/** |
194 |
+ |
* compareAndSet succeeds in changing protected field value if |
195 |
+ |
* equal to expected else fails |
196 |
+ |
*/ |
197 |
+ |
public void testCompareAndSetProtectedInSubclass() { |
198 |
+ |
AtomicLongFieldUpdaterTestSubclass s = |
199 |
+ |
new AtomicLongFieldUpdaterTestSubclass(); |
200 |
+ |
s.checkCompareAndSetProtectedSub(); |
201 |
+ |
} |
202 |
+ |
|
203 |
+ |
/** |
204 |
|
* compareAndSet in one thread enables another waiting for value |
205 |
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* to succeed |
206 |
|
*/ |
207 |
|
public void testCompareAndSetInMultipleThreads() throws Exception { |
208 |
|
x = 1; |
209 |
< |
final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a; |
210 |
< |
try { |
124 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
125 |
< |
} catch (RuntimeException ok) { |
126 |
< |
return; |
127 |
< |
} |
209 |
> |
final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
210 |
> |
a = updaterFor("x"); |
211 |
|
|
212 |
|
Thread t = new Thread(new CheckedRunnable() { |
213 |
|
public void realRun() { |
228 |
|
*/ |
229 |
|
public void testWeakCompareAndSet() { |
230 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
231 |
< |
try { |
149 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
150 |
< |
} catch (RuntimeException ok) { |
151 |
< |
return; |
152 |
< |
} |
231 |
> |
a = updaterFor("x"); |
232 |
|
x = 1; |
233 |
< |
while (!a.weakCompareAndSet(this, 1, 2)); |
234 |
< |
while (!a.weakCompareAndSet(this, 2, -4)); |
233 |
> |
do {} while (!a.weakCompareAndSet(this, 1, 2)); |
234 |
> |
do {} while (!a.weakCompareAndSet(this, 2, -4)); |
235 |
|
assertEquals(-4, a.get(this)); |
236 |
< |
while (!a.weakCompareAndSet(this, -4, 7)); |
236 |
> |
do {} while (!a.weakCompareAndSet(this, -4, 7)); |
237 |
|
assertEquals(7, a.get(this)); |
238 |
|
} |
239 |
|
|
242 |
|
*/ |
243 |
|
public void testGetAndSet() { |
244 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
245 |
< |
try { |
167 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
168 |
< |
} catch (RuntimeException ok) { |
169 |
< |
return; |
170 |
< |
} |
245 |
> |
a = updaterFor("x"); |
246 |
|
x = 1; |
247 |
|
assertEquals(1, a.getAndSet(this, 0)); |
248 |
|
assertEquals(0, a.getAndSet(this, -10)); |
254 |
|
*/ |
255 |
|
public void testGetAndAdd() { |
256 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
257 |
< |
try { |
183 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
184 |
< |
} catch (RuntimeException ok) { |
185 |
< |
return; |
186 |
< |
} |
257 |
> |
a = updaterFor("x"); |
258 |
|
x = 1; |
259 |
|
assertEquals(1, a.getAndAdd(this, 2)); |
260 |
|
assertEquals(3, a.get(this)); |
267 |
|
*/ |
268 |
|
public void testGetAndDecrement() { |
269 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
270 |
< |
try { |
200 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
201 |
< |
} catch (RuntimeException ok) { |
202 |
< |
return; |
203 |
< |
} |
270 |
> |
a = updaterFor("x"); |
271 |
|
x = 1; |
272 |
|
assertEquals(1, a.getAndDecrement(this)); |
273 |
|
assertEquals(0, a.getAndDecrement(this)); |
279 |
|
*/ |
280 |
|
public void testGetAndIncrement() { |
281 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
282 |
< |
try { |
216 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
217 |
< |
} catch (RuntimeException ok) { |
218 |
< |
return; |
219 |
< |
} |
282 |
> |
a = updaterFor("x"); |
283 |
|
x = 1; |
284 |
|
assertEquals(1, a.getAndIncrement(this)); |
285 |
|
assertEquals(2, a.get(this)); |
295 |
|
*/ |
296 |
|
public void testAddAndGet() { |
297 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
298 |
< |
try { |
236 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
237 |
< |
} catch (RuntimeException ok) { |
238 |
< |
return; |
239 |
< |
} |
298 |
> |
a = updaterFor("x"); |
299 |
|
x = 1; |
300 |
|
assertEquals(3, a.addAndGet(this, 2)); |
301 |
|
assertEquals(3, a.get(this)); |
308 |
|
*/ |
309 |
|
public void testDecrementAndGet() { |
310 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
311 |
< |
try { |
253 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
254 |
< |
} catch (RuntimeException ok) { |
255 |
< |
return; |
256 |
< |
} |
311 |
> |
a = updaterFor("x"); |
312 |
|
x = 1; |
313 |
|
assertEquals(0, a.decrementAndGet(this)); |
314 |
|
assertEquals(-1, a.decrementAndGet(this)); |
321 |
|
*/ |
322 |
|
public void testIncrementAndGet() { |
323 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
324 |
< |
try { |
270 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
271 |
< |
} catch (RuntimeException ok) { |
272 |
< |
return; |
273 |
< |
} |
324 |
> |
a = updaterFor("x"); |
325 |
|
x = 1; |
326 |
|
assertEquals(2, a.incrementAndGet(this)); |
327 |
|
assertEquals(2, a.get(this)); |