1 |
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/* |
2 |
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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/ |
5 |
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* Other contributors include John Vint |
6 |
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*/ |
7 |
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|
8 |
< |
import java.io.BufferedInputStream; |
9 |
< |
import java.io.BufferedOutputStream; |
10 |
< |
import java.io.ByteArrayInputStream; |
11 |
< |
import java.io.ByteArrayOutputStream; |
12 |
< |
import java.io.ObjectInputStream; |
13 |
< |
import java.io.ObjectOutputStream; |
8 |
> |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
9 |
> |
|
10 |
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import java.util.ArrayList; |
11 |
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import java.util.Arrays; |
12 |
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import java.util.Collection; |
13 |
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import java.util.Iterator; |
14 |
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import java.util.List; |
15 |
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import java.util.NoSuchElementException; |
16 |
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import java.util.concurrent.*; |
17 |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
18 |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
16 |
> |
import java.util.Queue; |
17 |
> |
import java.util.concurrent.BlockingQueue; |
18 |
> |
import java.util.concurrent.CountDownLatch; |
19 |
> |
import java.util.concurrent.Executors; |
20 |
> |
import java.util.concurrent.ExecutorService; |
21 |
> |
import java.util.concurrent.LinkedTransferQueue; |
22 |
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|
23 |
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import junit.framework.Test; |
23 |
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import junit.framework.TestSuite; |
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|
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@SuppressWarnings({"unchecked", "rawtypes"}) |
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public class LinkedTransferQueueTest extends JSR166TestCase { |
40 |
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new Generic().testSuite()); |
41 |
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} |
42 |
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|
43 |
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void checkEmpty(LinkedTransferQueue q) throws InterruptedException { |
44 |
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assertTrue(q.isEmpty()); |
45 |
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assertEquals(0, q.size()); |
46 |
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assertNull(q.peek()); |
47 |
– |
assertNull(q.poll()); |
48 |
– |
assertNull(q.poll(0, MILLISECONDS)); |
49 |
– |
assertEquals(q.toString(), "[]"); |
50 |
– |
assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
51 |
– |
assertFalse(q.iterator().hasNext()); |
52 |
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try { |
53 |
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q.element(); |
54 |
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shouldThrow(); |
55 |
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} catch (NoSuchElementException success) {} |
56 |
– |
try { |
57 |
– |
q.iterator().next(); |
58 |
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shouldThrow(); |
59 |
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} catch (NoSuchElementException success) {} |
60 |
– |
try { |
61 |
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q.remove(); |
62 |
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shouldThrow(); |
63 |
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} catch (NoSuchElementException success) {} |
64 |
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} |
65 |
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|
43 |
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/** |
44 |
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* Constructor builds new queue with size being zero and empty |
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* being true |
65 |
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* NullPointerException |
66 |
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*/ |
67 |
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public void testConstructor3() { |
68 |
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Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
69 |
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try { |
70 |
< |
Integer[] ints = new Integer[SIZE]; |
93 |
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new LinkedTransferQueue(Arrays.asList(ints)); |
70 |
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new LinkedTransferQueue(elements); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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* throws NullPointerException |
78 |
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*/ |
79 |
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public void testConstructor4() { |
80 |
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Integer[] ints = new Integer[SIZE]; |
81 |
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for (int i = 0; i < SIZE-1; ++i) |
82 |
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ints[i] = i; |
83 |
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Collection<Integer> elements = Arrays.asList(ints); |
84 |
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try { |
85 |
< |
Integer[] ints = new Integer[SIZE]; |
105 |
< |
for (int i = 0; i < SIZE - 1; ++i) { |
106 |
< |
ints[i] = i; |
107 |
< |
} |
108 |
< |
new LinkedTransferQueue(Arrays.asList(ints)); |
85 |
> |
new LinkedTransferQueue(elements); |
86 |
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shouldThrow(); |
87 |
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} catch (NullPointerException success) {} |
88 |
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} |
129 |
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} |
130 |
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|
131 |
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/** |
155 |
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* offer(null) throws NullPointerException |
156 |
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*/ |
157 |
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public void testOfferNull() { |
158 |
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try { |
159 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
160 |
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q.offer(null); |
161 |
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shouldThrow(); |
162 |
– |
} catch (NullPointerException success) {} |
163 |
– |
} |
164 |
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|
165 |
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/** |
166 |
– |
* add(null) throws NullPointerException |
167 |
– |
*/ |
168 |
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public void testAddNull() { |
169 |
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try { |
170 |
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LinkedTransferQueue q = new LinkedTransferQueue(); |
171 |
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q.add(null); |
172 |
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shouldThrow(); |
173 |
– |
} catch (NullPointerException success) {} |
174 |
– |
} |
175 |
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|
176 |
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/** |
177 |
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* addAll(null) throws NullPointerException |
178 |
– |
*/ |
179 |
– |
public void testAddAll1() { |
180 |
– |
try { |
181 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
182 |
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q.addAll(null); |
183 |
– |
shouldThrow(); |
184 |
– |
} catch (NullPointerException success) {} |
185 |
– |
} |
186 |
– |
|
187 |
– |
/** |
132 |
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* addAll(this) throws IllegalArgumentException |
133 |
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*/ |
134 |
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public void testAddAllSelf() { |
140 |
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} |
141 |
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|
142 |
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/** |
199 |
– |
* addAll of a collection with null elements throws NullPointerException |
200 |
– |
*/ |
201 |
– |
public void testAddAll2() { |
202 |
– |
try { |
203 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
204 |
– |
Integer[] ints = new Integer[SIZE]; |
205 |
– |
q.addAll(Arrays.asList(ints)); |
206 |
– |
shouldThrow(); |
207 |
– |
} catch (NullPointerException success) {} |
208 |
– |
} |
209 |
– |
|
210 |
– |
/** |
143 |
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* addAll of a collection with any null elements throws |
144 |
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* NullPointerException after possibly adding some elements |
145 |
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*/ |
173 |
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} |
174 |
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|
175 |
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/** |
244 |
– |
* put(null) throws NullPointerException |
245 |
– |
*/ |
246 |
– |
public void testPutNull() throws InterruptedException { |
247 |
– |
try { |
248 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
249 |
– |
q.put(null); |
250 |
– |
shouldThrow(); |
251 |
– |
} catch (NullPointerException success) {} |
252 |
– |
} |
253 |
– |
|
254 |
– |
/** |
176 |
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* all elements successfully put are contained |
177 |
|
*/ |
178 |
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public void testPut() { |
179 |
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LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>(); |
180 |
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for (int i = 0; i < SIZE; ++i) { |
181 |
< |
assertEquals(q.size(), i); |
181 |
> |
assertEquals(i, q.size()); |
182 |
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q.put(i); |
183 |
|
assertTrue(q.contains(i)); |
184 |
|
} |
198 |
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* take removes existing elements until empty, then blocks interruptibly |
199 |
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*/ |
200 |
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public void testBlockingTake() throws InterruptedException { |
201 |
< |
final LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
202 |
< |
Thread t = new Thread(new CheckedRunnable() { |
201 |
> |
final BlockingQueue q = populatedQueue(SIZE); |
202 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
203 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
204 |
|
public void realRun() throws InterruptedException { |
205 |
|
for (int i = 0; i < SIZE; ++i) { |
206 |
< |
assertEquals(i, (int) q.take()); |
206 |
> |
assertEquals(i, q.take()); |
207 |
|
} |
208 |
+ |
|
209 |
+ |
Thread.currentThread().interrupt(); |
210 |
|
try { |
211 |
|
q.take(); |
212 |
|
shouldThrow(); |
213 |
|
} catch (InterruptedException success) {} |
214 |
+ |
assertFalse(Thread.interrupted()); |
215 |
+ |
|
216 |
+ |
pleaseInterrupt.countDown(); |
217 |
+ |
try { |
218 |
+ |
q.take(); |
219 |
+ |
shouldThrow(); |
220 |
+ |
} catch (InterruptedException success) {} |
221 |
+ |
assertFalse(Thread.interrupted()); |
222 |
|
}}); |
223 |
|
|
224 |
< |
t.start(); |
225 |
< |
Thread.sleep(SHORT_DELAY_MS); |
224 |
> |
await(pleaseInterrupt); |
225 |
> |
assertThreadStaysAlive(t); |
226 |
|
t.interrupt(); |
227 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
296 |
< |
checkEmpty(q); |
227 |
> |
awaitTermination(t); |
228 |
|
} |
229 |
|
|
230 |
|
/** |
240 |
|
} |
241 |
|
|
242 |
|
/** |
243 |
< |
* timed pool with zero timeout succeeds when non-empty, else times out |
243 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
244 |
|
*/ |
245 |
|
public void testTimedPoll0() throws InterruptedException { |
246 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
252 |
|
} |
253 |
|
|
254 |
|
/** |
255 |
< |
* timed pool with nonzero timeout succeeds when non-empty, else times out |
255 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
256 |
|
*/ |
257 |
|
public void testTimedPoll() throws InterruptedException { |
258 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
259 |
|
for (int i = 0; i < SIZE; ++i) { |
260 |
< |
long t0 = System.nanoTime(); |
260 |
> |
long startTime = System.nanoTime(); |
261 |
|
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
262 |
< |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
262 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
263 |
|
} |
264 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
264 |
> |
long startTime = System.nanoTime(); |
265 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
266 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
267 |
|
checkEmpty(q); |
268 |
|
} |
269 |
|
|
272 |
|
* returning timeout status |
273 |
|
*/ |
274 |
|
public void testInterruptedTimedPoll() throws InterruptedException { |
275 |
< |
final LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
275 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
276 |
> |
final CountDownLatch aboutToWait = new CountDownLatch(1); |
277 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
278 |
|
public void realRun() throws InterruptedException { |
279 |
|
for (int i = 0; i < SIZE; ++i) { |
281 |
|
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
282 |
|
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
283 |
|
} |
284 |
+ |
long t0 = System.nanoTime(); |
285 |
+ |
aboutToWait.countDown(); |
286 |
|
try { |
287 |
< |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
287 |
> |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
288 |
|
shouldThrow(); |
289 |
< |
} catch (InterruptedException success) {} |
289 |
> |
} catch (InterruptedException success) { |
290 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
291 |
> |
} |
292 |
|
}}); |
293 |
|
|
294 |
< |
Thread.sleep(SMALL_DELAY_MS); |
294 |
> |
aboutToWait.await(); |
295 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
296 |
|
t.interrupt(); |
297 |
|
awaitTermination(t, MEDIUM_DELAY_MS); |
298 |
|
checkEmpty(q); |
299 |
|
} |
300 |
|
|
301 |
|
/** |
302 |
+ |
* timed poll after thread interrupted throws InterruptedException |
303 |
+ |
* instead of returning timeout status |
304 |
+ |
*/ |
305 |
+ |
public void testTimedPollAfterInterrupt() throws InterruptedException { |
306 |
+ |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
307 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
308 |
+ |
public void realRun() throws InterruptedException { |
309 |
+ |
Thread.currentThread().interrupt(); |
310 |
+ |
for (int i = 0; i < SIZE; ++i) { |
311 |
+ |
long t0 = System.nanoTime(); |
312 |
+ |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
313 |
+ |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
314 |
+ |
} |
315 |
+ |
try { |
316 |
+ |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
317 |
+ |
shouldThrow(); |
318 |
+ |
} catch (InterruptedException success) {} |
319 |
+ |
}}); |
320 |
+ |
|
321 |
+ |
awaitTermination(t, MEDIUM_DELAY_MS); |
322 |
+ |
checkEmpty(q); |
323 |
+ |
} |
324 |
+ |
|
325 |
+ |
/** |
326 |
|
* peek returns next element, or null if empty |
327 |
|
*/ |
328 |
|
public void testPeek() throws InterruptedException { |
369 |
|
} |
370 |
|
|
371 |
|
/** |
409 |
– |
* remove(x) removes x and returns true if present |
410 |
– |
*/ |
411 |
– |
public void testRemoveElement() throws InterruptedException { |
412 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
413 |
– |
for (int i = 1; i < SIZE; i += 2) { |
414 |
– |
assertTrue(q.remove(i)); |
415 |
– |
} |
416 |
– |
for (int i = 0; i < SIZE; i += 2) { |
417 |
– |
assertTrue(q.remove(i)); |
418 |
– |
assertFalse(q.remove(i + 1)); |
419 |
– |
} |
420 |
– |
checkEmpty(q); |
421 |
– |
} |
422 |
– |
|
423 |
– |
/** |
372 |
|
* An add following remove(x) succeeds |
373 |
|
*/ |
374 |
|
public void testRemoveElementAndAdd() throws InterruptedException { |
460 |
|
} |
461 |
|
|
462 |
|
/** |
463 |
< |
* toArray() contains all elements |
463 |
> |
* toArray() contains all elements in FIFO order |
464 |
|
*/ |
465 |
< |
public void testToArray() throws InterruptedException { |
465 |
> |
public void testToArray() { |
466 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
467 |
|
Object[] o = q.toArray(); |
468 |
|
for (int i = 0; i < o.length; i++) { |
469 |
< |
assertEquals(o[i], q.take()); |
469 |
> |
assertSame(o[i], q.poll()); |
470 |
|
} |
471 |
|
} |
472 |
|
|
473 |
|
/** |
474 |
< |
* toArray(a) contains all elements |
474 |
> |
* toArray(a) contains all elements in FIFO order |
475 |
|
*/ |
476 |
< |
public void testToArray2() throws InterruptedException { |
476 |
> |
public void testToArray2() { |
477 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
478 |
|
Integer[] ints = new Integer[SIZE]; |
479 |
< |
ints = q.toArray(ints); |
479 |
> |
Integer[] array = q.toArray(ints); |
480 |
> |
assertSame(ints, array); |
481 |
|
for (int i = 0; i < ints.length; i++) { |
482 |
< |
assertEquals(ints[i], q.take()); |
482 |
> |
assertSame(ints[i], q.poll()); |
483 |
|
} |
484 |
|
} |
485 |
|
|
486 |
|
/** |
487 |
< |
* toArray(null) throws NullPointerException |
539 |
< |
*/ |
540 |
< |
public void testToArray_BadArg() { |
541 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
542 |
< |
try { |
543 |
< |
Object o[] = q.toArray(null); |
544 |
< |
shouldThrow(); |
545 |
< |
} catch (NullPointerException success) {} |
546 |
< |
} |
547 |
< |
|
548 |
< |
/** |
549 |
< |
* toArray(incompatible array type) throws CCE |
487 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
488 |
|
*/ |
489 |
|
public void testToArray1_BadArg() { |
490 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
491 |
|
try { |
492 |
< |
Object o[] = q.toArray(new String[10]); |
492 |
> |
q.toArray(new String[10]); |
493 |
|
shouldThrow(); |
494 |
|
} catch (ArrayStoreException success) {} |
495 |
|
} |
500 |
|
public void testIterator() throws InterruptedException { |
501 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
502 |
|
Iterator it = q.iterator(); |
503 |
< |
int i = 0; |
504 |
< |
while (it.hasNext()) { |
505 |
< |
assertEquals(it.next(), i++); |
506 |
< |
} |
503 |
> |
int i; |
504 |
> |
for (i = 0; it.hasNext(); i++) |
505 |
> |
assertTrue(q.contains(it.next())); |
506 |
> |
assertEquals(i, SIZE); |
507 |
> |
assertIteratorExhausted(it); |
508 |
> |
|
509 |
> |
it = q.iterator(); |
510 |
> |
for (i = 0; it.hasNext(); i++) |
511 |
> |
assertEquals(it.next(), q.take()); |
512 |
|
assertEquals(i, SIZE); |
513 |
+ |
assertIteratorExhausted(it); |
514 |
+ |
} |
515 |
+ |
|
516 |
+ |
/** |
517 |
+ |
* iterator of empty collection has no elements |
518 |
+ |
*/ |
519 |
+ |
public void testEmptyIterator() { |
520 |
+ |
assertIteratorExhausted(new LinkedTransferQueue().iterator()); |
521 |
|
} |
522 |
|
|
523 |
|
/** |
579 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
580 |
|
String s = q.toString(); |
581 |
|
for (int i = 0; i < SIZE; ++i) { |
582 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
582 |
> |
assertTrue(s.contains(String.valueOf(i))); |
583 |
|
} |
584 |
|
} |
585 |
|
|
588 |
|
*/ |
589 |
|
public void testOfferInExecutor() { |
590 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
591 |
< |
q.add(one); |
641 |
< |
q.add(two); |
591 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
592 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
593 |
|
|
594 |
|
executor.execute(new CheckedRunnable() { |
595 |
< |
public void realRun() { |
596 |
< |
assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS)); |
595 |
> |
public void realRun() throws InterruptedException { |
596 |
> |
threadsStarted.await(); |
597 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
598 |
|
}}); |
599 |
|
|
600 |
|
executor.execute(new CheckedRunnable() { |
601 |
|
public void realRun() throws InterruptedException { |
602 |
< |
Thread.sleep(SMALL_DELAY_MS); |
602 |
> |
threadsStarted.await(); |
603 |
|
assertSame(one, q.take()); |
604 |
+ |
checkEmpty(q); |
605 |
|
}}); |
606 |
|
|
607 |
|
joinPool(executor); |
612 |
|
*/ |
613 |
|
public void testPollInExecutor() { |
614 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
615 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
616 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
617 |
|
|
618 |
|
executor.execute(new CheckedRunnable() { |
619 |
|
public void realRun() throws InterruptedException { |
620 |
|
assertNull(q.poll()); |
621 |
< |
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
622 |
< |
assertTrue(q.isEmpty()); |
621 |
> |
threadsStarted.await(); |
622 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
623 |
> |
checkEmpty(q); |
624 |
|
}}); |
625 |
|
|
626 |
|
executor.execute(new CheckedRunnable() { |
627 |
|
public void realRun() throws InterruptedException { |
628 |
< |
Thread.sleep(SMALL_DELAY_MS); |
628 |
> |
threadsStarted.await(); |
629 |
|
q.put(one); |
630 |
|
}}); |
631 |
|
|
636 |
|
* A deserialized serialized queue has same elements in same order |
637 |
|
*/ |
638 |
|
public void testSerialization() throws Exception { |
639 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
640 |
< |
|
687 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
688 |
< |
ObjectOutputStream out |
689 |
< |
= new ObjectOutputStream(new BufferedOutputStream(bout)); |
690 |
< |
out.writeObject(q); |
691 |
< |
out.close(); |
692 |
< |
|
693 |
< |
ByteArrayInputStream bin |
694 |
< |
= new ByteArrayInputStream(bout.toByteArray()); |
695 |
< |
ObjectInputStream in |
696 |
< |
= new ObjectInputStream(new BufferedInputStream(bin)); |
697 |
< |
LinkedTransferQueue r = (LinkedTransferQueue) in.readObject(); |
639 |
> |
Queue x = populatedQueue(SIZE); |
640 |
> |
Queue y = serialClone(x); |
641 |
|
|
642 |
< |
assertEquals(q.size(), r.size()); |
643 |
< |
while (!q.isEmpty()) { |
644 |
< |
assertEquals(q.remove(), r.remove()); |
642 |
> |
assertNotSame(y, x); |
643 |
> |
assertEquals(x.size(), y.size()); |
644 |
> |
assertEquals(x.toString(), y.toString()); |
645 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
646 |
> |
while (!x.isEmpty()) { |
647 |
> |
assertFalse(y.isEmpty()); |
648 |
> |
assertEquals(x.remove(), y.remove()); |
649 |
|
} |
650 |
< |
} |
704 |
< |
|
705 |
< |
/** |
706 |
< |
* drainTo(null) throws NullPointerException |
707 |
< |
*/ |
708 |
< |
public void testDrainToNull() { |
709 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
710 |
< |
try { |
711 |
< |
q.drainTo(null); |
712 |
< |
shouldThrow(); |
713 |
< |
} catch (NullPointerException success) {} |
714 |
< |
} |
715 |
< |
|
716 |
< |
/** |
717 |
< |
* drainTo(this) throws IllegalArgumentException |
718 |
< |
*/ |
719 |
< |
public void testDrainToSelf() { |
720 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
721 |
< |
try { |
722 |
< |
q.drainTo(q); |
723 |
< |
shouldThrow(); |
724 |
< |
} catch (IllegalArgumentException success) {} |
650 |
> |
assertTrue(y.isEmpty()); |
651 |
|
} |
652 |
|
|
653 |
|
/** |
657 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
658 |
|
ArrayList l = new ArrayList(); |
659 |
|
q.drainTo(l); |
660 |
< |
assertEquals(q.size(), 0); |
661 |
< |
assertEquals(l.size(), SIZE); |
660 |
> |
assertEquals(0, q.size()); |
661 |
> |
assertEquals(SIZE, l.size()); |
662 |
|
for (int i = 0; i < SIZE; ++i) { |
663 |
< |
assertEquals(l.get(i), i); |
663 |
> |
assertEquals(i, l.get(i)); |
664 |
|
} |
665 |
|
q.add(zero); |
666 |
|
q.add(one); |
669 |
|
assertTrue(q.contains(one)); |
670 |
|
l.clear(); |
671 |
|
q.drainTo(l); |
672 |
< |
assertEquals(q.size(), 0); |
673 |
< |
assertEquals(l.size(), 2); |
672 |
> |
assertEquals(0, q.size()); |
673 |
> |
assertEquals(2, l.size()); |
674 |
|
for (int i = 0; i < 2; ++i) { |
675 |
< |
assertEquals(l.get(i), i); |
675 |
> |
assertEquals(i, l.get(i)); |
676 |
|
} |
677 |
|
} |
678 |
|
|
688 |
|
ArrayList l = new ArrayList(); |
689 |
|
q.drainTo(l); |
690 |
|
assertTrue(l.size() >= SIZE); |
691 |
< |
for (int i = 0; i < SIZE; ++i) { |
692 |
< |
assertEquals(l.get(i), i); |
767 |
< |
} |
691 |
> |
for (int i = 0; i < SIZE; ++i) |
692 |
> |
assertEquals(i, l.get(i)); |
693 |
|
awaitTermination(t, MEDIUM_DELAY_MS); |
694 |
|
assertTrue(q.size() + l.size() >= SIZE); |
695 |
|
} |
696 |
|
|
697 |
|
/** |
773 |
– |
* drainTo(null, n) throws NullPointerException |
774 |
– |
*/ |
775 |
– |
public void testDrainToNullN() { |
776 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
777 |
– |
try { |
778 |
– |
q.drainTo(null, SIZE); |
779 |
– |
shouldThrow(); |
780 |
– |
} catch (NullPointerException success) {} |
781 |
– |
} |
782 |
– |
|
783 |
– |
/** |
784 |
– |
* drainTo(this, n) throws IllegalArgumentException |
785 |
– |
*/ |
786 |
– |
public void testDrainToSelfN() { |
787 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
788 |
– |
try { |
789 |
– |
q.drainTo(q, SIZE); |
790 |
– |
shouldThrow(); |
791 |
– |
} catch (IllegalArgumentException success) {} |
792 |
– |
} |
793 |
– |
|
794 |
– |
/** |
698 |
|
* drainTo(c, n) empties first min(n, size) elements of queue into c |
699 |
|
*/ |
700 |
|
public void testDrainToN() { |
706 |
|
ArrayList l = new ArrayList(); |
707 |
|
q.drainTo(l, i); |
708 |
|
int k = (i < SIZE) ? i : SIZE; |
709 |
< |
assertEquals(l.size(), k); |
710 |
< |
assertEquals(q.size(), SIZE - k); |
711 |
< |
for (int j = 0; j < k; ++j) { |
712 |
< |
assertEquals(l.get(j), j); |
713 |
< |
} |
811 |
< |
while (q.poll() != null) |
812 |
< |
; |
709 |
> |
assertEquals(k, l.size()); |
710 |
> |
assertEquals(SIZE - k, q.size()); |
711 |
> |
for (int j = 0; j < k; ++j) |
712 |
> |
assertEquals(j, l.get(j)); |
713 |
> |
do {} while (q.poll() != null); |
714 |
|
} |
715 |
|
} |
716 |
|
|
720 |
|
*/ |
721 |
|
public void testWaitingConsumer() throws InterruptedException { |
722 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
723 |
< |
assertEquals(q.getWaitingConsumerCount(), 0); |
723 |
> |
assertEquals(0, q.getWaitingConsumerCount()); |
724 |
|
assertFalse(q.hasWaitingConsumer()); |
725 |
+ |
final CountDownLatch threadStarted = new CountDownLatch(1); |
726 |
|
|
727 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
728 |
|
public void realRun() throws InterruptedException { |
729 |
< |
Thread.sleep(SMALL_DELAY_MS); |
730 |
< |
assertTrue(q.hasWaitingConsumer()); |
731 |
< |
assertEquals(q.getWaitingConsumerCount(), 1); |
830 |
< |
assertTrue(q.offer(one)); |
729 |
> |
threadStarted.countDown(); |
730 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
731 |
> |
assertEquals(0, q.getWaitingConsumerCount()); |
732 |
|
assertFalse(q.hasWaitingConsumer()); |
832 |
– |
assertEquals(q.getWaitingConsumerCount(), 0); |
733 |
|
}}); |
734 |
|
|
735 |
< |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
736 |
< |
assertEquals(q.getWaitingConsumerCount(), 0); |
735 |
> |
threadStarted.await(); |
736 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
737 |
> |
assertEquals(1, q.getWaitingConsumerCount()); |
738 |
> |
assertTrue(q.hasWaitingConsumer()); |
739 |
> |
|
740 |
> |
assertTrue(q.offer(one)); |
741 |
> |
assertEquals(0, q.getWaitingConsumerCount()); |
742 |
|
assertFalse(q.hasWaitingConsumer()); |
743 |
+ |
|
744 |
|
awaitTermination(t, MEDIUM_DELAY_MS); |
745 |
|
} |
746 |
|
|
762 |
|
public void testTransfer2() throws InterruptedException { |
763 |
|
final LinkedTransferQueue<Integer> q |
764 |
|
= new LinkedTransferQueue<Integer>(); |
765 |
+ |
final CountDownLatch threadStarted = new CountDownLatch(1); |
766 |
|
|
767 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
768 |
|
public void realRun() throws InterruptedException { |
769 |
< |
q.transfer(SIZE); |
770 |
< |
assertTrue(q.isEmpty()); |
769 |
> |
threadStarted.countDown(); |
770 |
> |
q.transfer(five); |
771 |
> |
checkEmpty(q); |
772 |
|
}}); |
773 |
|
|
774 |
< |
Thread.sleep(SHORT_DELAY_MS); |
774 |
> |
threadStarted.await(); |
775 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
776 |
|
assertEquals(1, q.size()); |
777 |
< |
assertEquals(SIZE, (int) q.poll()); |
778 |
< |
assertTrue(q.isEmpty()); |
777 |
> |
assertSame(five, q.poll()); |
778 |
> |
checkEmpty(q); |
779 |
|
awaitTermination(t, MEDIUM_DELAY_MS); |
780 |
|
} |
781 |
|
|
788 |
|
|
789 |
|
Thread first = newStartedThread(new CheckedRunnable() { |
790 |
|
public void realRun() throws InterruptedException { |
791 |
< |
Integer i = SIZE + 1; |
792 |
< |
q.transfer(i); |
884 |
< |
assertTrue(!q.contains(i)); |
791 |
> |
q.transfer(four); |
792 |
> |
assertTrue(!q.contains(four)); |
793 |
|
assertEquals(1, q.size()); |
794 |
|
}}); |
795 |
|
|
796 |
|
Thread interruptedThread = newStartedThread( |
797 |
|
new CheckedInterruptedRunnable() { |
798 |
|
public void realRun() throws InterruptedException { |
799 |
< |
while (q.size() == 0) |
799 |
> |
while (q.isEmpty()) |
800 |
|
Thread.yield(); |
801 |
< |
q.transfer(SIZE); |
801 |
> |
q.transfer(five); |
802 |
|
}}); |
803 |
|
|
804 |
|
while (q.size() < 2) |
805 |
|
Thread.yield(); |
806 |
|
assertEquals(2, q.size()); |
807 |
< |
assertEquals(SIZE + 1, (int) q.poll()); |
807 |
> |
assertSame(four, q.poll()); |
808 |
|
first.join(); |
809 |
|
assertEquals(1, q.size()); |
810 |
|
interruptedThread.interrupt(); |
811 |
|
interruptedThread.join(); |
812 |
< |
assertEquals(0, q.size()); |
905 |
< |
assertTrue(q.isEmpty()); |
812 |
> |
checkEmpty(q); |
813 |
|
} |
814 |
|
|
815 |
|
/** |
826 |
|
assertSame(three, q.poll()); |
827 |
|
}}); |
828 |
|
|
829 |
< |
Thread.sleep(SHORT_DELAY_MS); |
829 |
> |
while (q.isEmpty()) |
830 |
> |
Thread.yield(); |
831 |
> |
assertFalse(q.isEmpty()); |
832 |
> |
assertEquals(1, q.size()); |
833 |
|
assertTrue(q.offer(three)); |
834 |
|
assertSame(four, q.poll()); |
835 |
|
awaitTermination(t, MEDIUM_DELAY_MS); |
845 |
|
|
846 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
847 |
|
public void realRun() throws InterruptedException { |
848 |
< |
q.transfer(SIZE); |
848 |
> |
q.transfer(four); |
849 |
|
checkEmpty(q); |
850 |
|
}}); |
851 |
|
|
852 |
< |
Thread.sleep(SHORT_DELAY_MS); |
853 |
< |
assertEquals(SIZE, (int) q.take()); |
852 |
> |
while (q.isEmpty()) |
853 |
> |
Thread.yield(); |
854 |
> |
assertFalse(q.isEmpty()); |
855 |
> |
assertEquals(1, q.size()); |
856 |
> |
assertSame(four, q.take()); |
857 |
|
checkEmpty(q); |
858 |
|
awaitTermination(t, MEDIUM_DELAY_MS); |
859 |
|
} |
893 |
|
while (! q.hasWaitingConsumer()) |
894 |
|
Thread.yield(); |
895 |
|
assertTrue(q.hasWaitingConsumer()); |
896 |
< |
assertTrue(q.isEmpty()); |
984 |
< |
assertEquals(q.size(), 0); |
896 |
> |
checkEmpty(q); |
897 |
|
assertTrue(q.tryTransfer(hotPotato)); |
898 |
|
}}); |
899 |
|
|
915 |
|
while (! q.hasWaitingConsumer()) |
916 |
|
Thread.yield(); |
917 |
|
assertTrue(q.hasWaitingConsumer()); |
918 |
< |
assertTrue(q.isEmpty()); |
1007 |
< |
assertEquals(q.size(), 0); |
918 |
> |
checkEmpty(q); |
919 |
|
assertTrue(q.tryTransfer(hotPotato)); |
920 |
|
}}); |
921 |
|
|
925 |
|
} |
926 |
|
|
927 |
|
/** |
928 |
< |
* tryTransfer waits the amount given if interrupted, and |
1018 |
< |
* throws interrupted exception |
928 |
> |
* tryTransfer blocks interruptibly if no takers |
929 |
|
*/ |
930 |
|
public void testTryTransfer5() throws InterruptedException { |
931 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
932 |
+ |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
933 |
+ |
assertTrue(q.isEmpty()); |
934 |
|
|
935 |
< |
Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() { |
935 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
936 |
|
public void realRun() throws InterruptedException { |
937 |
< |
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
937 |
> |
Thread.currentThread().interrupt(); |
938 |
> |
try { |
939 |
> |
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
940 |
> |
shouldThrow(); |
941 |
> |
} catch (InterruptedException success) {} |
942 |
> |
assertFalse(Thread.interrupted()); |
943 |
> |
|
944 |
> |
pleaseInterrupt.countDown(); |
945 |
> |
try { |
946 |
> |
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
947 |
> |
shouldThrow(); |
948 |
> |
} catch (InterruptedException success) {} |
949 |
> |
assertFalse(Thread.interrupted()); |
950 |
|
}}); |
951 |
|
|
952 |
< |
Thread.sleep(SMALL_DELAY_MS); |
953 |
< |
toInterrupt.interrupt(); |
954 |
< |
toInterrupt.join(); |
952 |
> |
await(pleaseInterrupt); |
953 |
> |
assertThreadStaysAlive(t); |
954 |
> |
t.interrupt(); |
955 |
> |
awaitTermination(t); |
956 |
> |
checkEmpty(q); |
957 |
|
} |
958 |
|
|
959 |
|
/** |
960 |
< |
* tryTransfer gives up after the timeout and return false |
960 |
> |
* tryTransfer gives up after the timeout and returns false |
961 |
|
*/ |
962 |
|
public void testTryTransfer6() throws InterruptedException { |
963 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
966 |
|
public void realRun() throws InterruptedException { |
967 |
|
long t0 = System.nanoTime(); |
968 |
|
assertFalse(q.tryTransfer(new Object(), |
969 |
< |
SHORT_DELAY_MS, MILLISECONDS)); |
970 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
969 |
> |
timeoutMillis(), MILLISECONDS)); |
970 |
> |
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
971 |
> |
checkEmpty(q); |
972 |
|
}}); |
973 |
|
|
974 |
< |
checkEmpty(q); |
1048 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
974 |
> |
awaitTermination(t); |
975 |
|
checkEmpty(q); |
976 |
|
} |
977 |
|
|
986 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
987 |
|
public void realRun() throws InterruptedException { |
988 |
|
assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS)); |
989 |
< |
assertTrue(q.isEmpty()); |
989 |
> |
checkEmpty(q); |
990 |
|
}}); |
991 |
|
|
992 |
< |
Thread.sleep(SHORT_DELAY_MS); |
992 |
> |
while (q.size() != 2) |
993 |
> |
Thread.yield(); |
994 |
|
assertEquals(2, q.size()); |
995 |
|
assertSame(four, q.poll()); |
996 |
|
assertSame(five, q.poll()); |
999 |
|
} |
1000 |
|
|
1001 |
|
/** |
1002 |
< |
* tryTransfer attempts to enqueue into the q and fails returning |
1003 |
< |
* false not enqueueing and the successive poll is null |
1002 |
> |
* tryTransfer attempts to enqueue into the queue and fails |
1003 |
> |
* returning false not enqueueing and the successive poll is null |
1004 |
|
*/ |
1005 |
|
public void testTryTransfer8() throws InterruptedException { |
1006 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
1007 |
|
assertTrue(q.offer(four)); |
1008 |
|
assertEquals(1, q.size()); |
1009 |
< |
assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS)); |
1009 |
> |
long t0 = System.nanoTime(); |
1010 |
> |
assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS)); |
1011 |
> |
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
1012 |
|
assertEquals(1, q.size()); |
1013 |
|
assertSame(four, q.poll()); |
1014 |
|
assertNull(q.poll()); |
1017 |
|
|
1018 |
|
private LinkedTransferQueue<Integer> populatedQueue(int n) { |
1019 |
|
LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>(); |
1020 |
< |
assertTrue(q.isEmpty()); |
1020 |
> |
checkEmpty(q); |
1021 |
|
for (int i = 0; i < n; i++) { |
1022 |
|
assertEquals(i, q.size()); |
1023 |
|
assertTrue(q.offer(i)); |
1026 |
|
assertFalse(q.isEmpty()); |
1027 |
|
return q; |
1028 |
|
} |
1029 |
+ |
|
1030 |
+ |
/** |
1031 |
+ |
* remove(null), contains(null) always return false |
1032 |
+ |
*/ |
1033 |
+ |
public void testNeverContainsNull() { |
1034 |
+ |
Collection<?>[] qs = { |
1035 |
+ |
new LinkedTransferQueue<Object>(), |
1036 |
+ |
populatedQueue(2), |
1037 |
+ |
}; |
1038 |
+ |
|
1039 |
+ |
for (Collection<?> q : qs) { |
1040 |
+ |
assertFalse(q.contains(null)); |
1041 |
+ |
assertFalse(q.remove(null)); |
1042 |
+ |
} |
1043 |
+ |
} |
1044 |
|
} |