15 |
|
int z; |
16 |
|
long w; |
17 |
|
|
18 |
< |
public static void main(String[] args){ |
18 |
> |
public static void main(String[] args) { |
19 |
|
junit.textui.TestRunner.run(suite()); |
20 |
|
} |
21 |
|
public static Test suite() { |
25 |
|
/** |
26 |
|
* Construction with non-existent field throws RuntimeException |
27 |
|
*/ |
28 |
< |
public void testConstructor(){ |
28 |
> |
public void testConstructor() { |
29 |
|
try { |
30 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
31 |
|
a = AtomicLongFieldUpdater.newUpdater |
32 |
|
(AtomicLongFieldUpdaterTest.class, "y"); |
33 |
|
shouldThrow(); |
34 |
< |
} |
35 |
< |
catch (RuntimeException rt) {} |
34 |
> |
} catch (RuntimeException success) {} |
35 |
|
} |
36 |
|
|
37 |
|
/** |
38 |
|
* construction with field not of given type throws RuntimeException |
39 |
|
*/ |
40 |
< |
public void testConstructor2(){ |
40 |
> |
public void testConstructor2() { |
41 |
|
try { |
42 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
43 |
|
a = AtomicLongFieldUpdater.newUpdater |
44 |
|
(AtomicLongFieldUpdaterTest.class, "z"); |
45 |
|
shouldThrow(); |
46 |
< |
} |
48 |
< |
catch (RuntimeException rt) {} |
46 |
> |
} catch (RuntimeException success) {} |
47 |
|
} |
48 |
|
|
49 |
|
/** |
50 |
|
* construction with non-volatile field throws RuntimeException |
51 |
|
*/ |
52 |
< |
public void testConstructor3(){ |
52 |
> |
public void testConstructor3() { |
53 |
|
try { |
54 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
55 |
|
a = AtomicLongFieldUpdater.newUpdater |
56 |
|
(AtomicLongFieldUpdaterTest.class, "w"); |
57 |
|
shouldThrow(); |
58 |
< |
} |
61 |
< |
|
62 |
< |
catch (RuntimeException rt) {} |
58 |
> |
} catch (RuntimeException success) {} |
59 |
|
} |
60 |
|
|
61 |
|
/** |
62 |
< |
* get returns the last value set or assigned |
62 |
> |
* get returns the last value set or assigned |
63 |
|
*/ |
64 |
< |
public void testGetSet(){ |
64 |
> |
public void testGetSet() { |
65 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
66 |
|
try { |
67 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
69 |
|
return; |
70 |
|
} |
71 |
|
x = 1; |
72 |
< |
assertEquals(1,a.get(this)); |
73 |
< |
a.set(this,2); |
74 |
< |
assertEquals(2,a.get(this)); |
75 |
< |
a.set(this,-3); |
76 |
< |
assertEquals(-3,a.get(this)); |
72 |
> |
assertEquals(1,a.get(this)); |
73 |
> |
a.set(this,2); |
74 |
> |
assertEquals(2,a.get(this)); |
75 |
> |
a.set(this,-3); |
76 |
> |
assertEquals(-3,a.get(this)); |
77 |
|
} |
78 |
|
|
79 |
|
/** |
80 |
< |
* get returns the last value lazySet by same thread |
80 |
> |
* get returns the last value lazySet by same thread |
81 |
|
*/ |
82 |
< |
public void testGetLazySet(){ |
82 |
> |
public void testGetLazySet() { |
83 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
84 |
|
try { |
85 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
87 |
|
return; |
88 |
|
} |
89 |
|
x = 1; |
90 |
< |
assertEquals(1,a.get(this)); |
91 |
< |
a.lazySet(this,2); |
92 |
< |
assertEquals(2,a.get(this)); |
93 |
< |
a.lazySet(this,-3); |
94 |
< |
assertEquals(-3,a.get(this)); |
90 |
> |
assertEquals(1,a.get(this)); |
91 |
> |
a.lazySet(this,2); |
92 |
> |
assertEquals(2,a.get(this)); |
93 |
> |
a.lazySet(this,-3); |
94 |
> |
assertEquals(-3,a.get(this)); |
95 |
|
} |
96 |
|
|
97 |
|
|
98 |
|
/** |
99 |
|
* compareAndSet succeeds in changing value if equal to expected else fails |
100 |
|
*/ |
101 |
< |
public void testCompareAndSet(){ |
101 |
> |
public void testCompareAndSet() { |
102 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
103 |
|
try { |
104 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
106 |
|
return; |
107 |
|
} |
108 |
|
x = 1; |
109 |
< |
assertTrue(a.compareAndSet(this,1,2)); |
110 |
< |
assertTrue(a.compareAndSet(this,2,-4)); |
111 |
< |
assertEquals(-4,a.get(this)); |
112 |
< |
assertFalse(a.compareAndSet(this,-5,7)); |
113 |
< |
assertFalse((7 == a.get(this))); |
114 |
< |
assertTrue(a.compareAndSet(this,-4,7)); |
115 |
< |
assertEquals(7,a.get(this)); |
109 |
> |
assertTrue(a.compareAndSet(this,1,2)); |
110 |
> |
assertTrue(a.compareAndSet(this,2,-4)); |
111 |
> |
assertEquals(-4,a.get(this)); |
112 |
> |
assertFalse(a.compareAndSet(this,-5,7)); |
113 |
> |
assertEquals(-4,a.get(this)); |
114 |
> |
assertTrue(a.compareAndSet(this,-4,7)); |
115 |
> |
assertEquals(7,a.get(this)); |
116 |
|
} |
117 |
|
|
118 |
|
|
120 |
|
* compareAndSet in one thread enables another waiting for value |
121 |
|
* to succeed |
122 |
|
*/ |
123 |
< |
public void testCompareAndSetInMultipleThreads() { |
123 |
> |
public void testCompareAndSetInMultipleThreads() throws Exception { |
124 |
|
x = 1; |
125 |
|
final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a; |
126 |
|
try { |
129 |
|
return; |
130 |
|
} |
131 |
|
|
132 |
< |
Thread t = new Thread(new Runnable() { |
133 |
< |
public void run() { |
134 |
< |
while (!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) Thread.yield(); |
135 |
< |
}}); |
136 |
< |
try { |
137 |
< |
t.start(); |
138 |
< |
assertTrue(a.compareAndSet(this, 1, 2)); |
139 |
< |
t.join(LONG_DELAY_MS); |
140 |
< |
assertFalse(t.isAlive()); |
141 |
< |
assertEquals(a.get(this), 3); |
142 |
< |
} |
147 |
< |
catch (Exception e) { |
148 |
< |
unexpectedException(); |
149 |
< |
} |
132 |
> |
Thread t = new Thread(new CheckedRunnable() { |
133 |
> |
public void realRun() { |
134 |
> |
while (!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) |
135 |
> |
Thread.yield(); |
136 |
> |
}}); |
137 |
> |
|
138 |
> |
t.start(); |
139 |
> |
assertTrue(a.compareAndSet(this, 1, 2)); |
140 |
> |
t.join(LONG_DELAY_MS); |
141 |
> |
assertFalse(t.isAlive()); |
142 |
> |
assertEquals(a.get(this), 3); |
143 |
|
} |
144 |
|
|
145 |
|
/** |
146 |
|
* repeated weakCompareAndSet succeeds in changing value when equal |
147 |
|
* to expected |
148 |
|
*/ |
149 |
< |
public void testWeakCompareAndSet(){ |
149 |
> |
public void testWeakCompareAndSet() { |
150 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
151 |
|
try { |
152 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
154 |
|
return; |
155 |
|
} |
156 |
|
x = 1; |
157 |
< |
while (!a.weakCompareAndSet(this,1,2)); |
157 |
> |
while (!a.weakCompareAndSet(this,1,2)); |
158 |
|
while (!a.weakCompareAndSet(this,2,-4)); |
159 |
< |
assertEquals(-4,a.get(this)); |
160 |
< |
while (!a.weakCompareAndSet(this,-4,7)); |
161 |
< |
assertEquals(7,a.get(this)); |
159 |
> |
assertEquals(-4,a.get(this)); |
160 |
> |
while (!a.weakCompareAndSet(this,-4,7)); |
161 |
> |
assertEquals(7,a.get(this)); |
162 |
|
} |
163 |
|
|
164 |
|
/** |
165 |
< |
* getAndSet returns previous value and sets to given value |
165 |
> |
* getAndSet returns previous value and sets to given value |
166 |
|
*/ |
167 |
< |
public void testGetAndSet(){ |
167 |
> |
public void testGetAndSet() { |
168 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
169 |
|
try { |
170 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
172 |
|
return; |
173 |
|
} |
174 |
|
x = 1; |
175 |
< |
assertEquals(1,a.getAndSet(this, 0)); |
176 |
< |
assertEquals(0,a.getAndSet(this,-10)); |
177 |
< |
assertEquals(-10,a.getAndSet(this,1)); |
175 |
> |
assertEquals(1,a.getAndSet(this, 0)); |
176 |
> |
assertEquals(0,a.getAndSet(this,-10)); |
177 |
> |
assertEquals(-10,a.getAndSet(this,1)); |
178 |
|
} |
179 |
|
|
180 |
|
/** |
181 |
|
* getAndAdd returns previous value and adds given value |
182 |
|
*/ |
183 |
< |
public void testGetAndAdd(){ |
183 |
> |
public void testGetAndAdd() { |
184 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
185 |
|
try { |
186 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
188 |
|
return; |
189 |
|
} |
190 |
|
x = 1; |
191 |
< |
assertEquals(1,a.getAndAdd(this,2)); |
192 |
< |
assertEquals(3,a.get(this)); |
193 |
< |
assertEquals(3,a.getAndAdd(this,-4)); |
194 |
< |
assertEquals(-1,a.get(this)); |
191 |
> |
assertEquals(1,a.getAndAdd(this,2)); |
192 |
> |
assertEquals(3,a.get(this)); |
193 |
> |
assertEquals(3,a.getAndAdd(this,-4)); |
194 |
> |
assertEquals(-1,a.get(this)); |
195 |
|
} |
196 |
|
|
197 |
|
/** |
198 |
|
* getAndDecrement returns previous value and decrements |
199 |
|
*/ |
200 |
< |
public void testGetAndDecrement(){ |
200 |
> |
public void testGetAndDecrement() { |
201 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
202 |
|
try { |
203 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
205 |
|
return; |
206 |
|
} |
207 |
|
x = 1; |
208 |
< |
assertEquals(1,a.getAndDecrement(this)); |
209 |
< |
assertEquals(0,a.getAndDecrement(this)); |
210 |
< |
assertEquals(-1,a.getAndDecrement(this)); |
208 |
> |
assertEquals(1,a.getAndDecrement(this)); |
209 |
> |
assertEquals(0,a.getAndDecrement(this)); |
210 |
> |
assertEquals(-1,a.getAndDecrement(this)); |
211 |
|
} |
212 |
|
|
213 |
|
/** |
214 |
|
* getAndIncrement returns previous value and increments |
215 |
|
*/ |
216 |
< |
public void testGetAndIncrement(){ |
216 |
> |
public void testGetAndIncrement() { |
217 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
218 |
|
try { |
219 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
221 |
|
return; |
222 |
|
} |
223 |
|
x = 1; |
224 |
< |
assertEquals(1,a.getAndIncrement(this)); |
225 |
< |
assertEquals(2,a.get(this)); |
226 |
< |
a.set(this,-2); |
227 |
< |
assertEquals(-2,a.getAndIncrement(this)); |
228 |
< |
assertEquals(-1,a.getAndIncrement(this)); |
229 |
< |
assertEquals(0,a.getAndIncrement(this)); |
230 |
< |
assertEquals(1,a.get(this)); |
224 |
> |
assertEquals(1,a.getAndIncrement(this)); |
225 |
> |
assertEquals(2,a.get(this)); |
226 |
> |
a.set(this,-2); |
227 |
> |
assertEquals(-2,a.getAndIncrement(this)); |
228 |
> |
assertEquals(-1,a.getAndIncrement(this)); |
229 |
> |
assertEquals(0,a.getAndIncrement(this)); |
230 |
> |
assertEquals(1,a.get(this)); |
231 |
|
} |
232 |
|
|
233 |
|
/** |
234 |
|
* addAndGet adds given value to current, and returns current value |
235 |
|
*/ |
236 |
< |
public void testAddAndGet(){ |
236 |
> |
public void testAddAndGet() { |
237 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
238 |
|
try { |
239 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
241 |
|
return; |
242 |
|
} |
243 |
|
x = 1; |
244 |
< |
assertEquals(3,a.addAndGet(this,2)); |
245 |
< |
assertEquals(3,a.get(this)); |
246 |
< |
assertEquals(-1,a.addAndGet(this,-4)); |
247 |
< |
assertEquals(-1,a.get(this)); |
244 |
> |
assertEquals(3,a.addAndGet(this,2)); |
245 |
> |
assertEquals(3,a.get(this)); |
246 |
> |
assertEquals(-1,a.addAndGet(this,-4)); |
247 |
> |
assertEquals(-1,a.get(this)); |
248 |
|
} |
249 |
|
|
250 |
|
/** |
251 |
< |
* decrementAndGet decrements and returns current value |
251 |
> |
* decrementAndGet decrements and returns current value |
252 |
|
*/ |
253 |
< |
public void testDecrementAndGet(){ |
253 |
> |
public void testDecrementAndGet() { |
254 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
255 |
|
try { |
256 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
258 |
|
return; |
259 |
|
} |
260 |
|
x = 1; |
261 |
< |
assertEquals(0,a.decrementAndGet(this)); |
262 |
< |
assertEquals(-1,a.decrementAndGet(this)); |
263 |
< |
assertEquals(-2,a.decrementAndGet(this)); |
264 |
< |
assertEquals(-2,a.get(this)); |
261 |
> |
assertEquals(0,a.decrementAndGet(this)); |
262 |
> |
assertEquals(-1,a.decrementAndGet(this)); |
263 |
> |
assertEquals(-2,a.decrementAndGet(this)); |
264 |
> |
assertEquals(-2,a.get(this)); |
265 |
|
} |
266 |
|
|
267 |
|
/** |
268 |
|
* incrementAndGet increments and returns current value |
269 |
|
*/ |
270 |
< |
public void testIncrementAndGet(){ |
270 |
> |
public void testIncrementAndGet() { |
271 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
272 |
|
try { |
273 |
|
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
275 |
|
return; |
276 |
|
} |
277 |
|
x = 1; |
278 |
< |
assertEquals(2,a.incrementAndGet(this)); |
279 |
< |
assertEquals(2,a.get(this)); |
280 |
< |
a.set(this,-2); |
281 |
< |
assertEquals(-1,a.incrementAndGet(this)); |
282 |
< |
assertEquals(0,a.incrementAndGet(this)); |
283 |
< |
assertEquals(1,a.incrementAndGet(this)); |
284 |
< |
assertEquals(1,a.get(this)); |
278 |
> |
assertEquals(2,a.incrementAndGet(this)); |
279 |
> |
assertEquals(2,a.get(this)); |
280 |
> |
a.set(this,-2); |
281 |
> |
assertEquals(-1,a.incrementAndGet(this)); |
282 |
> |
assertEquals(0,a.incrementAndGet(this)); |
283 |
> |
assertEquals(1,a.incrementAndGet(this)); |
284 |
> |
assertEquals(1,a.get(this)); |
285 |
|
} |
286 |
|
|
287 |
|
} |