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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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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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public class AtomicLongFieldUpdaterTest extends JSR166TestCase { |
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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; |
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long w; |
19 |
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|
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float z; |
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public static void main(String[] args) { |
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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); |
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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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/** |
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* Construction with non-existent field throws RuntimeException |
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*/ |
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public void testConstructor() { |
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try { |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
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a = AtomicLongFieldUpdater.newUpdater |
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(AtomicLongFieldUpdaterTest.class, "y"); |
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updaterFor("y"); |
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shouldThrow(); |
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} catch (RuntimeException success) {} |
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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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/** |
45 |
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* construction with field not of given type throws RuntimeException |
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> |
* construction with field not of given type throws IllegalArgumentException |
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*/ |
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public void testConstructor2() { |
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try { |
49 |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
42 |
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a = AtomicLongFieldUpdater.newUpdater |
43 |
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(AtomicLongFieldUpdaterTest.class, "z"); |
49 |
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updaterFor("z"); |
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shouldThrow(); |
51 |
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} catch (RuntimeException success) {} |
51 |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
55 |
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* construction with non-volatile field throws RuntimeException |
55 |
> |
* construction with non-volatile field throws IllegalArgumentException |
56 |
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*/ |
57 |
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public void testConstructor3() { |
58 |
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try { |
59 |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
54 |
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a = AtomicLongFieldUpdater.newUpdater |
55 |
< |
(AtomicLongFieldUpdaterTest.class, "w"); |
59 |
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updaterFor("w"); |
60 |
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shouldThrow(); |
61 |
< |
} catch (RuntimeException success) {} |
61 |
> |
} catch (IllegalArgumentException success) {} |
62 |
> |
} |
63 |
> |
|
64 |
> |
/** |
65 |
> |
* construction using private field from subclass throws RuntimeException |
66 |
> |
*/ |
67 |
> |
public void testPrivateFieldInSubclass() { |
68 |
> |
new NonNestmates.AtomicLongFieldUpdaterTestSubclass() |
69 |
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.checkPrivateAccess(); |
70 |
> |
} |
71 |
> |
|
72 |
> |
/** |
73 |
> |
* construction from unrelated class; package access is allowed, |
74 |
> |
* private access is not |
75 |
> |
*/ |
76 |
> |
public void testUnrelatedClassAccess() { |
77 |
> |
new NonNestmates().checkPackageAccess(this); |
78 |
> |
new NonNestmates().checkPrivateAccess(this); |
79 |
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} |
80 |
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|
81 |
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/** |
83 |
|
*/ |
84 |
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public void testGetSet() { |
85 |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
86 |
< |
try { |
66 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
67 |
< |
} catch (RuntimeException ok) { |
68 |
< |
return; |
69 |
< |
} |
86 |
> |
a = updaterFor("x"); |
87 |
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x = 1; |
88 |
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assertEquals(1, a.get(this)); |
89 |
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a.set(this, 2); |
97 |
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*/ |
98 |
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public void testGetLazySet() { |
99 |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
100 |
< |
try { |
84 |
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a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
85 |
< |
} catch (RuntimeException ok) { |
86 |
< |
return; |
87 |
< |
} |
100 |
> |
a = updaterFor("x"); |
101 |
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x = 1; |
102 |
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assertEquals(1, a.get(this)); |
103 |
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a.lazySet(this, 2); |
111 |
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*/ |
112 |
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public void testCompareAndSet() { |
113 |
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AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
114 |
< |
try { |
102 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
103 |
< |
} catch (RuntimeException ok) { |
104 |
< |
return; |
105 |
< |
} |
114 |
> |
a = updaterFor("x"); |
115 |
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x = 1; |
116 |
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assertTrue(a.compareAndSet(this, 1, 2)); |
117 |
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assertTrue(a.compareAndSet(this, 2, -4)); |
123 |
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} |
124 |
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|
125 |
|
/** |
126 |
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* compareAndSet succeeds in changing protected field value if |
127 |
+ |
* equal to expected else fails |
128 |
+ |
*/ |
129 |
+ |
public void testCompareAndSetProtected() { |
130 |
+ |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
131 |
+ |
a = updaterFor("protectedField"); |
132 |
+ |
protectedField = 1; |
133 |
+ |
assertTrue(a.compareAndSet(this, 1, 2)); |
134 |
+ |
assertTrue(a.compareAndSet(this, 2, -4)); |
135 |
+ |
assertEquals(-4, a.get(this)); |
136 |
+ |
assertFalse(a.compareAndSet(this, -5, 7)); |
137 |
+ |
assertEquals(-4, a.get(this)); |
138 |
+ |
assertTrue(a.compareAndSet(this, -4, 7)); |
139 |
+ |
assertEquals(7, a.get(this)); |
140 |
+ |
} |
141 |
+ |
|
142 |
+ |
/** |
143 |
+ |
* compareAndSet succeeds in changing protected field value if |
144 |
+ |
* equal to expected else fails |
145 |
+ |
*/ |
146 |
+ |
public void testCompareAndSetProtectedInSubclass() { |
147 |
+ |
new NonNestmates.AtomicLongFieldUpdaterTestSubclass() |
148 |
+ |
.checkCompareAndSetProtectedSub(); |
149 |
+ |
} |
150 |
+ |
|
151 |
+ |
/** |
152 |
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* compareAndSet in one thread enables another waiting for value |
153 |
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* to succeed |
154 |
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*/ |
155 |
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public void testCompareAndSetInMultipleThreads() throws Exception { |
156 |
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x = 1; |
157 |
< |
final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a; |
158 |
< |
try { |
124 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
125 |
< |
} catch (RuntimeException ok) { |
126 |
< |
return; |
127 |
< |
} |
157 |
> |
final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
158 |
> |
a = updaterFor("x"); |
159 |
|
|
160 |
|
Thread t = new Thread(new CheckedRunnable() { |
161 |
|
public void realRun() { |
176 |
|
*/ |
177 |
|
public void testWeakCompareAndSet() { |
178 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
179 |
< |
try { |
149 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
150 |
< |
} catch (RuntimeException ok) { |
151 |
< |
return; |
152 |
< |
} |
179 |
> |
a = updaterFor("x"); |
180 |
|
x = 1; |
181 |
< |
while (!a.weakCompareAndSet(this, 1, 2)); |
182 |
< |
while (!a.weakCompareAndSet(this, 2, -4)); |
181 |
> |
do {} while (!a.weakCompareAndSet(this, 1, 2)); |
182 |
> |
do {} while (!a.weakCompareAndSet(this, 2, -4)); |
183 |
|
assertEquals(-4, a.get(this)); |
184 |
< |
while (!a.weakCompareAndSet(this, -4, 7)); |
184 |
> |
do {} while (!a.weakCompareAndSet(this, -4, 7)); |
185 |
|
assertEquals(7, a.get(this)); |
186 |
|
} |
187 |
|
|
190 |
|
*/ |
191 |
|
public void testGetAndSet() { |
192 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
193 |
< |
try { |
167 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
168 |
< |
} catch (RuntimeException ok) { |
169 |
< |
return; |
170 |
< |
} |
193 |
> |
a = updaterFor("x"); |
194 |
|
x = 1; |
195 |
|
assertEquals(1, a.getAndSet(this, 0)); |
196 |
|
assertEquals(0, a.getAndSet(this, -10)); |
202 |
|
*/ |
203 |
|
public void testGetAndAdd() { |
204 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
205 |
< |
try { |
183 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
184 |
< |
} catch (RuntimeException ok) { |
185 |
< |
return; |
186 |
< |
} |
205 |
> |
a = updaterFor("x"); |
206 |
|
x = 1; |
207 |
|
assertEquals(1, a.getAndAdd(this, 2)); |
208 |
|
assertEquals(3, a.get(this)); |
215 |
|
*/ |
216 |
|
public void testGetAndDecrement() { |
217 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
218 |
< |
try { |
200 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
201 |
< |
} catch (RuntimeException ok) { |
202 |
< |
return; |
203 |
< |
} |
218 |
> |
a = updaterFor("x"); |
219 |
|
x = 1; |
220 |
|
assertEquals(1, a.getAndDecrement(this)); |
221 |
|
assertEquals(0, a.getAndDecrement(this)); |
227 |
|
*/ |
228 |
|
public void testGetAndIncrement() { |
229 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
230 |
< |
try { |
216 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
217 |
< |
} catch (RuntimeException ok) { |
218 |
< |
return; |
219 |
< |
} |
230 |
> |
a = updaterFor("x"); |
231 |
|
x = 1; |
232 |
|
assertEquals(1, a.getAndIncrement(this)); |
233 |
|
assertEquals(2, a.get(this)); |
243 |
|
*/ |
244 |
|
public void testAddAndGet() { |
245 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
246 |
< |
try { |
236 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
237 |
< |
} catch (RuntimeException ok) { |
238 |
< |
return; |
239 |
< |
} |
246 |
> |
a = updaterFor("x"); |
247 |
|
x = 1; |
248 |
|
assertEquals(3, a.addAndGet(this, 2)); |
249 |
|
assertEquals(3, a.get(this)); |
256 |
|
*/ |
257 |
|
public void testDecrementAndGet() { |
258 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
259 |
< |
try { |
253 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
254 |
< |
} catch (RuntimeException ok) { |
255 |
< |
return; |
256 |
< |
} |
259 |
> |
a = updaterFor("x"); |
260 |
|
x = 1; |
261 |
|
assertEquals(0, a.decrementAndGet(this)); |
262 |
|
assertEquals(-1, a.decrementAndGet(this)); |
269 |
|
*/ |
270 |
|
public void testIncrementAndGet() { |
271 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
272 |
< |
try { |
270 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
271 |
< |
} catch (RuntimeException ok) { |
272 |
< |
return; |
273 |
< |
} |
272 |
> |
a = updaterFor("x"); |
273 |
|
x = 1; |
274 |
|
assertEquals(2, a.incrementAndGet(this)); |
275 |
|
assertEquals(2, a.get(this)); |