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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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> |
* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
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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.*; |
11 |
< |
import java.util.concurrent.*; |
10 |
> |
import java.util.Arrays; |
11 |
> |
import java.util.ArrayList; |
12 |
> |
import java.util.Collection; |
13 |
> |
import java.util.Iterator; |
14 |
> |
import java.util.NoSuchElementException; |
15 |
> |
import java.util.Queue; |
16 |
> |
import java.util.concurrent.BlockingQueue; |
17 |
> |
import java.util.concurrent.CountDownLatch; |
18 |
> |
import java.util.concurrent.LinkedBlockingQueue; |
19 |
> |
import java.util.concurrent.Executors; |
20 |
> |
import java.util.concurrent.ExecutorService; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.io.*; |
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|
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public class LinkedBlockingQueueTest extends JSR166TestCase { |
24 |
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|
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|
31 |
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public static class Bounded extends BlockingQueueTest { |
32 |
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protected BlockingQueue emptyCollection() { |
33 |
< |
return new LinkedBlockingQueue(20); |
33 |
> |
return new LinkedBlockingQueue(SIZE); |
34 |
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} |
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} |
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|
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new Bounded().testSuite()); |
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} |
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|
39 |
– |
|
47 |
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/** |
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* Create a queue of given size containing consecutive |
49 |
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* Integers 0 ... n. |
50 |
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*/ |
51 |
< |
private LinkedBlockingQueue populatedQueue(int n) { |
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< |
LinkedBlockingQueue q = new LinkedBlockingQueue(n); |
51 |
> |
private LinkedBlockingQueue<Integer> populatedQueue(int n) { |
52 |
> |
LinkedBlockingQueue<Integer> q = |
53 |
> |
new LinkedBlockingQueue<Integer>(n); |
54 |
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assertTrue(q.isEmpty()); |
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for (int i = 0; i < n; i++) |
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assertTrue(q.offer(new Integer(i))); |
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} |
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|
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/** |
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* Constructor throws IAE if capacity argument nonpositive |
73 |
> |
* Constructor throws IllegalArgumentException if capacity argument nonpositive |
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*/ |
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public void testConstructor2() { |
76 |
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try { |
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< |
LinkedBlockingQueue q = new LinkedBlockingQueue(0); |
77 |
> |
new LinkedBlockingQueue(0); |
78 |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
80 |
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} |
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|
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/** |
83 |
< |
* Initializing from null Collection throws NPE |
83 |
> |
* Initializing from null Collection throws NullPointerException |
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*/ |
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public void testConstructor3() { |
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try { |
87 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(null); |
87 |
> |
new LinkedBlockingQueue(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
90 |
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} |
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|
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/** |
93 |
< |
* Initializing from Collection of null elements throws NPE |
93 |
> |
* Initializing from Collection of null elements throws NullPointerException |
94 |
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*/ |
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public void testConstructor4() { |
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+ |
Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
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try { |
98 |
< |
Integer[] ints = new Integer[SIZE]; |
90 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
98 |
> |
new LinkedBlockingQueue(elements); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
101 |
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} |
102 |
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|
103 |
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/** |
104 |
< |
* Initializing from Collection with some null elements throws NPE |
104 |
> |
* Initializing from Collection with some null elements throws |
105 |
> |
* NullPointerException |
106 |
|
*/ |
107 |
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public void testConstructor5() { |
108 |
+ |
Integer[] ints = new Integer[SIZE]; |
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+ |
for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new Integer(i); |
111 |
+ |
Collection<Integer> elements = Arrays.asList(ints); |
112 |
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try { |
113 |
< |
Integer[] ints = new Integer[SIZE]; |
101 |
< |
for (int i = 0; i < SIZE-1; ++i) |
102 |
< |
ints[i] = new Integer(i); |
103 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
113 |
> |
new LinkedBlockingQueue(elements); |
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shouldThrow(); |
115 |
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} catch (NullPointerException success) {} |
116 |
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} |
160 |
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} |
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|
162 |
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/** |
153 |
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* offer(null) throws NPE |
154 |
– |
*/ |
155 |
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public void testOfferNull() { |
156 |
– |
try { |
157 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
158 |
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q.offer(null); |
159 |
– |
shouldThrow(); |
160 |
– |
} catch (NullPointerException success) {} |
161 |
– |
} |
162 |
– |
|
163 |
– |
/** |
164 |
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* add(null) throws NPE |
165 |
– |
*/ |
166 |
– |
public void testAddNull() { |
167 |
– |
try { |
168 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
169 |
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q.add(null); |
170 |
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shouldThrow(); |
171 |
– |
} catch (NullPointerException success) {} |
172 |
– |
} |
173 |
– |
|
174 |
– |
/** |
163 |
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* Offer succeeds if not full; fails if full |
164 |
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*/ |
165 |
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public void testOffer() { |
169 |
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} |
170 |
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|
171 |
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/** |
172 |
< |
* add succeeds if not full; throws ISE if full |
172 |
> |
* add succeeds if not full; throws IllegalStateException if full |
173 |
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*/ |
174 |
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public void testAdd() { |
175 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
176 |
+ |
for (int i = 0; i < SIZE; ++i) |
177 |
+ |
assertTrue(q.add(new Integer(i))); |
178 |
+ |
assertEquals(0, q.remainingCapacity()); |
179 |
|
try { |
188 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
189 |
– |
for (int i = 0; i < SIZE; ++i) { |
190 |
– |
assertTrue(q.add(new Integer(i))); |
191 |
– |
} |
192 |
– |
assertEquals(0, q.remainingCapacity()); |
180 |
|
q.add(new Integer(SIZE)); |
181 |
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shouldThrow(); |
182 |
|
} catch (IllegalStateException success) {} |
183 |
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} |
184 |
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|
185 |
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/** |
186 |
< |
* addAll(null) throws NPE |
200 |
< |
*/ |
201 |
< |
public void testAddAll1() { |
202 |
< |
try { |
203 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
204 |
< |
q.addAll(null); |
205 |
< |
shouldThrow(); |
206 |
< |
} catch (NullPointerException success) {} |
207 |
< |
} |
208 |
< |
|
209 |
< |
/** |
210 |
< |
* addAll(this) throws IAE |
186 |
> |
* addAll(this) throws IllegalArgumentException |
187 |
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*/ |
188 |
|
public void testAddAllSelf() { |
189 |
+ |
LinkedBlockingQueue q = populatedQueue(SIZE); |
190 |
|
try { |
214 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
191 |
|
q.addAll(q); |
192 |
|
shouldThrow(); |
193 |
|
} catch (IllegalArgumentException success) {} |
194 |
|
} |
195 |
|
|
196 |
|
/** |
221 |
– |
* addAll of a collection with null elements throws NPE |
222 |
– |
*/ |
223 |
– |
public void testAddAll2() { |
224 |
– |
try { |
225 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
226 |
– |
Integer[] ints = new Integer[SIZE]; |
227 |
– |
q.addAll(Arrays.asList(ints)); |
228 |
– |
shouldThrow(); |
229 |
– |
} catch (NullPointerException success) {} |
230 |
– |
} |
231 |
– |
|
232 |
– |
/** |
197 |
|
* addAll of a collection with any null elements throws NPE after |
198 |
|
* possibly adding some elements |
199 |
|
*/ |
200 |
|
public void testAddAll3() { |
201 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
202 |
+ |
Integer[] ints = new Integer[SIZE]; |
203 |
+ |
for (int i = 0; i < SIZE-1; ++i) |
204 |
+ |
ints[i] = new Integer(i); |
205 |
+ |
Collection<Integer> elements = Arrays.asList(ints); |
206 |
|
try { |
207 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
239 |
< |
Integer[] ints = new Integer[SIZE]; |
240 |
< |
for (int i = 0; i < SIZE-1; ++i) |
241 |
< |
ints[i] = new Integer(i); |
242 |
< |
q.addAll(Arrays.asList(ints)); |
207 |
> |
q.addAll(elements); |
208 |
|
shouldThrow(); |
209 |
|
} catch (NullPointerException success) {} |
210 |
|
} |
211 |
|
|
212 |
|
/** |
213 |
< |
* addAll throws ISE if not enough room |
213 |
> |
* addAll throws IllegalStateException if not enough room |
214 |
|
*/ |
215 |
|
public void testAddAll4() { |
216 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE - 1); |
217 |
+ |
Integer[] ints = new Integer[SIZE]; |
218 |
+ |
for (int i = 0; i < SIZE; ++i) |
219 |
+ |
ints[i] = new Integer(i); |
220 |
+ |
Collection<Integer> elements = Arrays.asList(ints); |
221 |
|
try { |
222 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
253 |
< |
Integer[] ints = new Integer[SIZE]; |
254 |
< |
for (int i = 0; i < SIZE; ++i) |
255 |
< |
ints[i] = new Integer(i); |
256 |
< |
q.addAll(Arrays.asList(ints)); |
222 |
> |
q.addAll(elements); |
223 |
|
shouldThrow(); |
224 |
|
} catch (IllegalStateException success) {} |
225 |
|
} |
240 |
|
} |
241 |
|
|
242 |
|
/** |
277 |
– |
* put(null) throws NPE |
278 |
– |
*/ |
279 |
– |
public void testPutNull() throws InterruptedException { |
280 |
– |
try { |
281 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
282 |
– |
q.put(null); |
283 |
– |
shouldThrow(); |
284 |
– |
} catch (NullPointerException success) {} |
285 |
– |
} |
286 |
– |
|
287 |
– |
/** |
243 |
|
* all elements successfully put are contained |
244 |
|
*/ |
245 |
|
public void testPut() throws InterruptedException { |
257 |
|
*/ |
258 |
|
public void testBlockingPut() throws InterruptedException { |
259 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
260 |
< |
Thread t = new Thread(new CheckedRunnable() { |
260 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
261 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
262 |
|
public void realRun() throws InterruptedException { |
263 |
|
for (int i = 0; i < SIZE; ++i) |
264 |
|
q.put(i); |
265 |
|
assertEquals(SIZE, q.size()); |
266 |
|
assertEquals(0, q.remainingCapacity()); |
267 |
+ |
|
268 |
+ |
Thread.currentThread().interrupt(); |
269 |
+ |
try { |
270 |
+ |
q.put(99); |
271 |
+ |
shouldThrow(); |
272 |
+ |
} catch (InterruptedException success) {} |
273 |
+ |
assertFalse(Thread.interrupted()); |
274 |
+ |
|
275 |
+ |
pleaseInterrupt.countDown(); |
276 |
|
try { |
277 |
|
q.put(99); |
278 |
|
shouldThrow(); |
279 |
|
} catch (InterruptedException success) {} |
280 |
+ |
assertFalse(Thread.interrupted()); |
281 |
|
}}); |
282 |
|
|
283 |
< |
t.start(); |
284 |
< |
Thread.sleep(SHORT_DELAY_MS); |
283 |
> |
await(pleaseInterrupt); |
284 |
> |
assertThreadStaysAlive(t); |
285 |
|
t.interrupt(); |
286 |
< |
t.join(); |
286 |
> |
awaitTermination(t); |
287 |
|
assertEquals(SIZE, q.size()); |
288 |
|
assertEquals(0, q.remainingCapacity()); |
289 |
|
} |
290 |
|
|
291 |
|
/** |
292 |
< |
* put blocks waiting for take when full |
292 |
> |
* put blocks interruptibly waiting for take when full |
293 |
|
*/ |
294 |
|
public void testPutWithTake() throws InterruptedException { |
295 |
|
final int capacity = 2; |
296 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
297 |
< |
Thread t = new Thread(new CheckedRunnable() { |
297 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
298 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
299 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
300 |
|
public void realRun() throws InterruptedException { |
301 |
< |
for (int i = 0; i < capacity + 1; i++) |
301 |
> |
for (int i = 0; i < capacity; i++) |
302 |
|
q.put(i); |
303 |
+ |
pleaseTake.countDown(); |
304 |
+ |
q.put(86); |
305 |
+ |
|
306 |
+ |
pleaseInterrupt.countDown(); |
307 |
|
try { |
308 |
|
q.put(99); |
309 |
|
shouldThrow(); |
310 |
|
} catch (InterruptedException success) {} |
311 |
+ |
assertFalse(Thread.interrupted()); |
312 |
|
}}); |
313 |
|
|
314 |
< |
t.start(); |
315 |
< |
Thread.sleep(SHORT_DELAY_MS); |
343 |
< |
assertEquals(q.remainingCapacity(), 0); |
314 |
> |
await(pleaseTake); |
315 |
> |
assertEquals(0, q.remainingCapacity()); |
316 |
|
assertEquals(0, q.take()); |
317 |
< |
Thread.sleep(SHORT_DELAY_MS); |
317 |
> |
|
318 |
> |
await(pleaseInterrupt); |
319 |
> |
assertThreadStaysAlive(t); |
320 |
|
t.interrupt(); |
321 |
< |
t.join(); |
322 |
< |
assertEquals(q.remainingCapacity(), 0); |
321 |
> |
awaitTermination(t); |
322 |
> |
assertEquals(0, q.remainingCapacity()); |
323 |
|
} |
324 |
|
|
325 |
|
/** |
326 |
|
* timed offer times out if full and elements not taken |
327 |
|
*/ |
328 |
< |
public void testTimedOffer() throws InterruptedException { |
328 |
> |
public void testTimedOffer() { |
329 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
330 |
< |
Thread t = new Thread(new CheckedRunnable() { |
330 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
331 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
332 |
|
public void realRun() throws InterruptedException { |
333 |
|
q.put(new Object()); |
334 |
|
q.put(new Object()); |
335 |
< |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
335 |
> |
long startTime = System.nanoTime(); |
336 |
> |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
337 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
338 |
> |
pleaseInterrupt.countDown(); |
339 |
|
try { |
340 |
< |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
340 |
> |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
341 |
|
shouldThrow(); |
342 |
|
} catch (InterruptedException success) {} |
343 |
|
}}); |
344 |
|
|
345 |
< |
t.start(); |
346 |
< |
Thread.sleep(SMALL_DELAY_MS); |
345 |
> |
await(pleaseInterrupt); |
346 |
> |
assertThreadStaysAlive(t); |
347 |
|
t.interrupt(); |
348 |
< |
t.join(); |
348 |
> |
awaitTermination(t); |
349 |
|
} |
350 |
|
|
351 |
|
/** |
362 |
|
* Take removes existing elements until empty, then blocks interruptibly |
363 |
|
*/ |
364 |
|
public void testBlockingTake() throws InterruptedException { |
365 |
< |
final LinkedBlockingQueue q = populatedQueue(SIZE); |
366 |
< |
Thread t = new Thread(new CheckedRunnable() { |
365 |
> |
final BlockingQueue q = populatedQueue(SIZE); |
366 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
367 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
368 |
|
public void realRun() throws InterruptedException { |
369 |
|
for (int i = 0; i < SIZE; ++i) { |
370 |
|
assertEquals(i, q.take()); |
371 |
|
} |
372 |
+ |
|
373 |
+ |
Thread.currentThread().interrupt(); |
374 |
|
try { |
375 |
|
q.take(); |
376 |
|
shouldThrow(); |
377 |
|
} catch (InterruptedException success) {} |
378 |
+ |
assertFalse(Thread.interrupted()); |
379 |
+ |
|
380 |
+ |
pleaseInterrupt.countDown(); |
381 |
+ |
try { |
382 |
+ |
q.take(); |
383 |
+ |
shouldThrow(); |
384 |
+ |
} catch (InterruptedException success) {} |
385 |
+ |
assertFalse(Thread.interrupted()); |
386 |
|
}}); |
387 |
|
|
388 |
< |
t.start(); |
389 |
< |
Thread.sleep(SHORT_DELAY_MS); |
388 |
> |
await(pleaseInterrupt); |
389 |
> |
assertThreadStaysAlive(t); |
390 |
|
t.interrupt(); |
391 |
< |
t.join(); |
391 |
> |
awaitTermination(t); |
392 |
|
} |
393 |
|
|
394 |
|
/** |
417 |
|
* timed poll with nonzero timeout succeeds when non-empty, else times out |
418 |
|
*/ |
419 |
|
public void testTimedPoll() throws InterruptedException { |
420 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
420 |
> |
LinkedBlockingQueue<Integer> q = populatedQueue(SIZE); |
421 |
|
for (int i = 0; i < SIZE; ++i) { |
422 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
423 |
< |
} |
424 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
422 |
> |
long startTime = System.nanoTime(); |
423 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
424 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
425 |
> |
} |
426 |
> |
long startTime = System.nanoTime(); |
427 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
428 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
429 |
> |
checkEmpty(q); |
430 |
|
} |
431 |
|
|
432 |
|
/** |
434 |
|
* returning timeout status |
435 |
|
*/ |
436 |
|
public void testInterruptedTimedPoll() throws InterruptedException { |
437 |
< |
Thread t = new Thread(new CheckedRunnable() { |
437 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
438 |
> |
final CountDownLatch aboutToWait = new CountDownLatch(1); |
439 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
440 |
|
public void realRun() throws InterruptedException { |
445 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
441 |
|
for (int i = 0; i < SIZE; ++i) { |
442 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
442 |
> |
long t0 = System.nanoTime(); |
443 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
444 |
> |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
445 |
|
} |
446 |
+ |
long t0 = System.nanoTime(); |
447 |
+ |
aboutToWait.countDown(); |
448 |
|
try { |
449 |
< |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
449 |
> |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
450 |
|
shouldThrow(); |
451 |
< |
} catch (InterruptedException success) {} |
451 |
> |
} catch (InterruptedException success) { |
452 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
453 |
> |
} |
454 |
|
}}); |
455 |
|
|
456 |
< |
t.start(); |
457 |
< |
Thread.sleep(SHORT_DELAY_MS); |
456 |
> |
aboutToWait.await(); |
457 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
458 |
|
t.interrupt(); |
459 |
< |
t.join(); |
459 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
460 |
> |
checkEmpty(q); |
461 |
|
} |
462 |
|
|
463 |
|
/** |
504 |
|
} |
505 |
|
|
506 |
|
/** |
505 |
– |
* remove(x) removes x and returns true if present |
506 |
– |
*/ |
507 |
– |
public void testRemoveElement() { |
508 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
509 |
– |
for (int i = 1; i < SIZE; i+=2) { |
510 |
– |
assertTrue(q.remove(new Integer(i))); |
511 |
– |
} |
512 |
– |
for (int i = 0; i < SIZE; i+=2) { |
513 |
– |
assertTrue(q.remove(new Integer(i))); |
514 |
– |
assertFalse(q.remove(new Integer(i+1))); |
515 |
– |
} |
516 |
– |
assertTrue(q.isEmpty()); |
517 |
– |
} |
518 |
– |
|
519 |
– |
/** |
507 |
|
* An add following remove(x) succeeds |
508 |
|
*/ |
509 |
|
public void testRemoveElementAndAdd() throws InterruptedException { |
607 |
|
* toArray(a) contains all elements in FIFO order |
608 |
|
*/ |
609 |
|
public void testToArray2() throws InterruptedException { |
610 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
610 |
> |
LinkedBlockingQueue<Integer> q = populatedQueue(SIZE); |
611 |
|
Integer[] ints = new Integer[SIZE]; |
612 |
< |
assertSame(ints, q.toArray(ints)); |
612 |
> |
Integer[] array = q.toArray(ints); |
613 |
> |
assertSame(ints, array); |
614 |
|
for (int i = 0; i < ints.length; i++) |
615 |
|
assertSame(ints[i], q.poll()); |
616 |
|
} |
617 |
|
|
618 |
|
/** |
631 |
– |
* toArray(null) throws NullPointerException |
632 |
– |
*/ |
633 |
– |
public void testToArray_NullArg() { |
634 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
635 |
– |
try { |
636 |
– |
q.toArray(null); |
637 |
– |
shouldThrow(); |
638 |
– |
} catch (NullPointerException success) {} |
639 |
– |
} |
640 |
– |
|
641 |
– |
/** |
619 |
|
* toArray(incompatible array type) throws ArrayStoreException |
620 |
|
*/ |
621 |
|
public void testToArray1_BadArg() { |
626 |
|
} catch (ArrayStoreException success) {} |
627 |
|
} |
628 |
|
|
652 |
– |
|
629 |
|
/** |
630 |
|
* iterator iterates through all elements |
631 |
|
*/ |
656 |
|
assertFalse(it.hasNext()); |
657 |
|
} |
658 |
|
|
683 |
– |
|
659 |
|
/** |
660 |
|
* iterator ordering is FIFO |
661 |
|
*/ |
687 |
|
assertEquals(0, q.size()); |
688 |
|
} |
689 |
|
|
715 |
– |
|
690 |
|
/** |
691 |
|
* toString contains toStrings of elements |
692 |
|
*/ |
694 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
695 |
|
String s = q.toString(); |
696 |
|
for (int i = 0; i < SIZE; ++i) { |
697 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
697 |
> |
assertTrue(s.contains(String.valueOf(i))); |
698 |
|
} |
699 |
|
} |
700 |
|
|
727 |
– |
|
701 |
|
/** |
702 |
|
* offer transfers elements across Executor tasks |
703 |
|
*/ |
706 |
|
q.add(one); |
707 |
|
q.add(two); |
708 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
709 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
710 |
|
executor.execute(new CheckedRunnable() { |
711 |
|
public void realRun() throws InterruptedException { |
712 |
|
assertFalse(q.offer(three)); |
713 |
< |
assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS)); |
713 |
> |
threadsStarted.await(); |
714 |
> |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
715 |
|
assertEquals(0, q.remainingCapacity()); |
716 |
|
}}); |
717 |
|
|
718 |
|
executor.execute(new CheckedRunnable() { |
719 |
|
public void realRun() throws InterruptedException { |
720 |
< |
Thread.sleep(SMALL_DELAY_MS); |
720 |
> |
threadsStarted.await(); |
721 |
|
assertSame(one, q.take()); |
722 |
|
}}); |
723 |
|
|
725 |
|
} |
726 |
|
|
727 |
|
/** |
728 |
< |
* poll retrieves elements across Executor threads |
728 |
> |
* timed poll retrieves elements across Executor threads |
729 |
|
*/ |
730 |
|
public void testPollInExecutor() { |
731 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
732 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
733 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
734 |
|
executor.execute(new CheckedRunnable() { |
735 |
|
public void realRun() throws InterruptedException { |
736 |
|
assertNull(q.poll()); |
737 |
< |
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
738 |
< |
assertTrue(q.isEmpty()); |
737 |
> |
threadsStarted.await(); |
738 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
739 |
> |
checkEmpty(q); |
740 |
|
}}); |
741 |
|
|
742 |
|
executor.execute(new CheckedRunnable() { |
743 |
|
public void realRun() throws InterruptedException { |
744 |
< |
Thread.sleep(SMALL_DELAY_MS); |
744 |
> |
threadsStarted.await(); |
745 |
|
q.put(one); |
746 |
|
}}); |
747 |
|
|
752 |
|
* A deserialized serialized queue has same elements in same order |
753 |
|
*/ |
754 |
|
public void testSerialization() throws Exception { |
755 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
756 |
< |
|
780 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
781 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
782 |
< |
out.writeObject(q); |
783 |
< |
out.close(); |
755 |
> |
Queue x = populatedQueue(SIZE); |
756 |
> |
Queue y = serialClone(x); |
757 |
|
|
758 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
759 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
760 |
< |
LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject(); |
761 |
< |
assertEquals(q.size(), r.size()); |
762 |
< |
while (!q.isEmpty()) |
763 |
< |
assertEquals(q.remove(), r.remove()); |
764 |
< |
} |
765 |
< |
|
766 |
< |
/** |
794 |
< |
* drainTo(null) throws NPE |
795 |
< |
*/ |
796 |
< |
public void testDrainToNull() { |
797 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
798 |
< |
try { |
799 |
< |
q.drainTo(null); |
800 |
< |
shouldThrow(); |
801 |
< |
} catch (NullPointerException success) {} |
802 |
< |
} |
803 |
< |
|
804 |
< |
/** |
805 |
< |
* drainTo(this) throws IAE |
806 |
< |
*/ |
807 |
< |
public void testDrainToSelf() { |
808 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
809 |
< |
try { |
810 |
< |
q.drainTo(q); |
811 |
< |
shouldThrow(); |
812 |
< |
} catch (IllegalArgumentException success) {} |
758 |
> |
assertTrue(x != y); |
759 |
> |
assertEquals(x.size(), y.size()); |
760 |
> |
assertEquals(x.toString(), y.toString()); |
761 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
762 |
> |
while (!x.isEmpty()) { |
763 |
> |
assertFalse(y.isEmpty()); |
764 |
> |
assertEquals(x.remove(), y.remove()); |
765 |
> |
} |
766 |
> |
assertTrue(y.isEmpty()); |
767 |
|
} |
768 |
|
|
769 |
|
/** |
773 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
774 |
|
ArrayList l = new ArrayList(); |
775 |
|
q.drainTo(l); |
776 |
< |
assertEquals(q.size(), 0); |
777 |
< |
assertEquals(l.size(), SIZE); |
776 |
> |
assertEquals(0, q.size()); |
777 |
> |
assertEquals(SIZE, l.size()); |
778 |
|
for (int i = 0; i < SIZE; ++i) |
779 |
|
assertEquals(l.get(i), new Integer(i)); |
780 |
|
q.add(zero); |
784 |
|
assertTrue(q.contains(one)); |
785 |
|
l.clear(); |
786 |
|
q.drainTo(l); |
787 |
< |
assertEquals(q.size(), 0); |
788 |
< |
assertEquals(l.size(), 2); |
787 |
> |
assertEquals(0, q.size()); |
788 |
> |
assertEquals(2, l.size()); |
789 |
|
for (int i = 0; i < 2; ++i) |
790 |
|
assertEquals(l.get(i), new Integer(i)); |
791 |
|
} |
811 |
|
} |
812 |
|
|
813 |
|
/** |
860 |
– |
* drainTo(null, n) throws NPE |
861 |
– |
*/ |
862 |
– |
public void testDrainToNullN() { |
863 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
864 |
– |
try { |
865 |
– |
q.drainTo(null, 0); |
866 |
– |
shouldThrow(); |
867 |
– |
} catch (NullPointerException success) {} |
868 |
– |
} |
869 |
– |
|
870 |
– |
/** |
871 |
– |
* drainTo(this, n) throws IAE |
872 |
– |
*/ |
873 |
– |
public void testDrainToSelfN() { |
874 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
875 |
– |
try { |
876 |
– |
q.drainTo(q, 0); |
877 |
– |
shouldThrow(); |
878 |
– |
} catch (IllegalArgumentException success) {} |
879 |
– |
} |
880 |
– |
|
881 |
– |
/** |
814 |
|
* drainTo(c, n) empties first min(n, size) elements of queue into c |
815 |
|
*/ |
816 |
|
public void testDrainToN() { |