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; |
14 |
< |
import java.util.ArrayList; |
8 |
> |
import junit.framework.*; |
9 |
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import java.util.Arrays; |
10 |
+ |
import java.util.ArrayList; |
11 |
+ |
import java.util.Collection; |
12 |
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import java.util.Iterator; |
13 |
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import java.util.List; |
14 |
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import java.util.NoSuchElementException; |
15 |
< |
import java.util.concurrent.*; |
15 |
> |
import java.util.Queue; |
16 |
> |
import java.util.concurrent.BlockingQueue; |
17 |
> |
import java.util.concurrent.CountDownLatch; |
18 |
> |
import java.util.concurrent.Executors; |
19 |
> |
import java.util.concurrent.ExecutorService; |
20 |
> |
import java.util.concurrent.LinkedTransferQueue; |
21 |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
22 |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
22 |
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import junit.framework.Test; |
23 |
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import junit.framework.TestSuite; |
23 |
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|
24 |
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@SuppressWarnings({"unchecked", "rawtypes"}) |
25 |
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public class LinkedTransferQueueTest extends JSR166TestCase { |
64 |
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* NullPointerException |
65 |
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*/ |
66 |
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public void testConstructor3() { |
67 |
+ |
Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
68 |
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try { |
69 |
< |
Integer[] ints = new Integer[SIZE]; |
70 |
< |
new LinkedTransferQueue(Arrays.asList(ints)); |
69 |
> |
new LinkedTransferQueue(elements); |
70 |
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shouldThrow(); |
71 |
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} catch (NullPointerException success) {} |
72 |
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} |
76 |
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* throws NullPointerException |
77 |
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*/ |
78 |
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public void testConstructor4() { |
79 |
+ |
Integer[] ints = new Integer[SIZE]; |
80 |
+ |
for (int i = 0; i < SIZE-1; ++i) |
81 |
+ |
ints[i] = i; |
82 |
+ |
Collection<Integer> elements = Arrays.asList(ints); |
83 |
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try { |
84 |
< |
Integer[] ints = new Integer[SIZE]; |
82 |
< |
for (int i = 0; i < SIZE - 1; ++i) { |
83 |
< |
ints[i] = i; |
84 |
< |
} |
85 |
< |
new LinkedTransferQueue(Arrays.asList(ints)); |
84 |
> |
new LinkedTransferQueue(elements); |
85 |
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shouldThrow(); |
86 |
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} catch (NullPointerException success) {} |
87 |
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} |
128 |
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} |
129 |
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|
130 |
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/** |
132 |
– |
* offer(null) throws NullPointerException |
133 |
– |
*/ |
134 |
– |
public void testOfferNull() { |
135 |
– |
try { |
136 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
137 |
– |
q.offer(null); |
138 |
– |
shouldThrow(); |
139 |
– |
} catch (NullPointerException success) {} |
140 |
– |
} |
141 |
– |
|
142 |
– |
/** |
143 |
– |
* add(null) throws NullPointerException |
144 |
– |
*/ |
145 |
– |
public void testAddNull() { |
146 |
– |
try { |
147 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
148 |
– |
q.add(null); |
149 |
– |
shouldThrow(); |
150 |
– |
} catch (NullPointerException success) {} |
151 |
– |
} |
152 |
– |
|
153 |
– |
/** |
154 |
– |
* addAll(null) throws NullPointerException |
155 |
– |
*/ |
156 |
– |
public void testAddAll1() { |
157 |
– |
try { |
158 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
159 |
– |
q.addAll(null); |
160 |
– |
shouldThrow(); |
161 |
– |
} catch (NullPointerException success) {} |
162 |
– |
} |
163 |
– |
|
164 |
– |
/** |
131 |
|
* addAll(this) throws IllegalArgumentException |
132 |
|
*/ |
133 |
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public void testAddAllSelf() { |
139 |
|
} |
140 |
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|
141 |
|
/** |
176 |
– |
* addAll of a collection with null elements throws NullPointerException |
177 |
– |
*/ |
178 |
– |
public void testAddAll2() { |
179 |
– |
try { |
180 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
181 |
– |
Integer[] ints = new Integer[SIZE]; |
182 |
– |
q.addAll(Arrays.asList(ints)); |
183 |
– |
shouldThrow(); |
184 |
– |
} catch (NullPointerException success) {} |
185 |
– |
} |
186 |
– |
|
187 |
– |
/** |
142 |
|
* addAll of a collection with any null elements throws |
143 |
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* NullPointerException after possibly adding some elements |
144 |
|
*/ |
172 |
|
} |
173 |
|
|
174 |
|
/** |
221 |
– |
* put(null) throws NullPointerException |
222 |
– |
*/ |
223 |
– |
public void testPutNull() throws InterruptedException { |
224 |
– |
try { |
225 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
226 |
– |
q.put(null); |
227 |
– |
shouldThrow(); |
228 |
– |
} catch (NullPointerException success) {} |
229 |
– |
} |
230 |
– |
|
231 |
– |
/** |
175 |
|
* all elements successfully put are contained |
176 |
|
*/ |
177 |
|
public void testPut() { |
197 |
|
* take removes existing elements until empty, then blocks interruptibly |
198 |
|
*/ |
199 |
|
public void testBlockingTake() throws InterruptedException { |
200 |
< |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
201 |
< |
final CountDownLatch aboutToWait = new CountDownLatch(1); |
200 |
> |
final BlockingQueue q = populatedQueue(SIZE); |
201 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
202 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
203 |
|
public void realRun() throws InterruptedException { |
204 |
|
for (int i = 0; i < SIZE; ++i) { |
205 |
< |
assertEquals(i, (int) q.take()); |
205 |
> |
assertEquals(i, q.take()); |
206 |
|
} |
207 |
< |
aboutToWait.countDown(); |
207 |
> |
|
208 |
> |
Thread.currentThread().interrupt(); |
209 |
|
try { |
210 |
|
q.take(); |
211 |
|
shouldThrow(); |
212 |
|
} catch (InterruptedException success) {} |
213 |
+ |
assertFalse(Thread.interrupted()); |
214 |
+ |
|
215 |
+ |
pleaseInterrupt.countDown(); |
216 |
+ |
try { |
217 |
+ |
q.take(); |
218 |
+ |
shouldThrow(); |
219 |
+ |
} catch (InterruptedException success) {} |
220 |
+ |
assertFalse(Thread.interrupted()); |
221 |
|
}}); |
222 |
|
|
223 |
< |
aboutToWait.await(); |
224 |
< |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
223 |
> |
await(pleaseInterrupt); |
224 |
> |
assertThreadStaysAlive(t); |
225 |
|
t.interrupt(); |
226 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
275 |
< |
checkEmpty(q); |
226 |
> |
awaitTermination(t); |
227 |
|
} |
228 |
|
|
229 |
|
/** |
256 |
|
public void testTimedPoll() throws InterruptedException { |
257 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
258 |
|
for (int i = 0; i < SIZE; ++i) { |
259 |
< |
long t0 = System.nanoTime(); |
260 |
< |
assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS)); |
261 |
< |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
262 |
< |
} |
263 |
< |
long t0 = System.nanoTime(); |
264 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
265 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
259 |
> |
long startTime = System.nanoTime(); |
260 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
261 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
262 |
> |
} |
263 |
> |
long startTime = System.nanoTime(); |
264 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
265 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
266 |
|
checkEmpty(q); |
267 |
|
} |
268 |
|
|
504 |
|
} |
505 |
|
|
506 |
|
/** |
556 |
– |
* toArray(null) throws NullPointerException |
557 |
– |
*/ |
558 |
– |
public void testToArray_NullArg() { |
559 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
560 |
– |
try { |
561 |
– |
q.toArray(null); |
562 |
– |
shouldThrow(); |
563 |
– |
} catch (NullPointerException success) {} |
564 |
– |
} |
565 |
– |
|
566 |
– |
/** |
507 |
|
* toArray(incompatible array type) throws ArrayStoreException |
508 |
|
*/ |
509 |
|
public void testToArray1_BadArg() { |
586 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
587 |
|
String s = q.toString(); |
588 |
|
for (int i = 0; i < SIZE; ++i) { |
589 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
589 |
> |
assertTrue(s.contains(String.valueOf(i))); |
590 |
|
} |
591 |
|
} |
592 |
|
|
595 |
|
*/ |
596 |
|
public void testOfferInExecutor() { |
597 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
598 |
< |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
598 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
599 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
600 |
|
|
601 |
|
executor.execute(new CheckedRunnable() { |
602 |
|
public void realRun() throws InterruptedException { |
663 |
– |
threadsStarted.countDown(); |
603 |
|
threadsStarted.await(); |
604 |
< |
assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS)); |
604 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
605 |
|
}}); |
606 |
|
|
607 |
|
executor.execute(new CheckedRunnable() { |
608 |
|
public void realRun() throws InterruptedException { |
670 |
– |
threadsStarted.countDown(); |
609 |
|
threadsStarted.await(); |
610 |
|
assertSame(one, q.take()); |
611 |
|
checkEmpty(q); |
619 |
|
*/ |
620 |
|
public void testPollInExecutor() { |
621 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
622 |
< |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
622 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
623 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
624 |
|
|
625 |
|
executor.execute(new CheckedRunnable() { |
626 |
|
public void realRun() throws InterruptedException { |
627 |
|
assertNull(q.poll()); |
690 |
– |
threadsStarted.countDown(); |
628 |
|
threadsStarted.await(); |
629 |
< |
assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS)); |
629 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
630 |
|
checkEmpty(q); |
631 |
|
}}); |
632 |
|
|
633 |
|
executor.execute(new CheckedRunnable() { |
634 |
|
public void realRun() throws InterruptedException { |
698 |
– |
threadsStarted.countDown(); |
635 |
|
threadsStarted.await(); |
636 |
|
q.put(one); |
637 |
|
}}); |
643 |
|
* A deserialized serialized queue has same elements in same order |
644 |
|
*/ |
645 |
|
public void testSerialization() throws Exception { |
646 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
647 |
< |
|
712 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
713 |
< |
ObjectOutputStream out |
714 |
< |
= new ObjectOutputStream(new BufferedOutputStream(bout)); |
715 |
< |
out.writeObject(q); |
716 |
< |
out.close(); |
717 |
< |
|
718 |
< |
ByteArrayInputStream bin |
719 |
< |
= new ByteArrayInputStream(bout.toByteArray()); |
720 |
< |
ObjectInputStream in |
721 |
< |
= new ObjectInputStream(new BufferedInputStream(bin)); |
722 |
< |
LinkedTransferQueue r = (LinkedTransferQueue) in.readObject(); |
646 |
> |
Queue x = populatedQueue(SIZE); |
647 |
> |
Queue y = serialClone(x); |
648 |
|
|
649 |
< |
assertEquals(q.size(), r.size()); |
650 |
< |
assertEquals(q.toString(), r.toString()); |
651 |
< |
assertTrue(Arrays.equals(q.toArray(), r.toArray())); |
652 |
< |
while (!q.isEmpty()) { |
653 |
< |
assertEquals(q.remove(), r.remove()); |
649 |
> |
assertTrue(x != y); |
650 |
> |
assertEquals(x.size(), y.size()); |
651 |
> |
assertEquals(x.toString(), y.toString()); |
652 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
653 |
> |
while (!x.isEmpty()) { |
654 |
> |
assertFalse(y.isEmpty()); |
655 |
> |
assertEquals(x.remove(), y.remove()); |
656 |
|
} |
657 |
< |
} |
731 |
< |
|
732 |
< |
/** |
733 |
< |
* drainTo(null) throws NullPointerException |
734 |
< |
*/ |
735 |
< |
public void testDrainToNull() { |
736 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
737 |
< |
try { |
738 |
< |
q.drainTo(null); |
739 |
< |
shouldThrow(); |
740 |
< |
} catch (NullPointerException success) {} |
741 |
< |
} |
742 |
< |
|
743 |
< |
/** |
744 |
< |
* drainTo(this) throws IllegalArgumentException |
745 |
< |
*/ |
746 |
< |
public void testDrainToSelf() { |
747 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
748 |
< |
try { |
749 |
< |
q.drainTo(q); |
750 |
< |
shouldThrow(); |
751 |
< |
} catch (IllegalArgumentException success) {} |
657 |
> |
assertTrue(y.isEmpty()); |
658 |
|
} |
659 |
|
|
660 |
|
/** |
703 |
|
} |
704 |
|
|
705 |
|
/** |
800 |
– |
* drainTo(null, n) throws NullPointerException |
801 |
– |
*/ |
802 |
– |
public void testDrainToNullN() { |
803 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
804 |
– |
try { |
805 |
– |
q.drainTo(null, SIZE); |
806 |
– |
shouldThrow(); |
807 |
– |
} catch (NullPointerException success) {} |
808 |
– |
} |
809 |
– |
|
810 |
– |
/** |
811 |
– |
* drainTo(this, n) throws IllegalArgumentException |
812 |
– |
*/ |
813 |
– |
public void testDrainToSelfN() { |
814 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
815 |
– |
try { |
816 |
– |
q.drainTo(q, SIZE); |
817 |
– |
shouldThrow(); |
818 |
– |
} catch (IllegalArgumentException success) {} |
819 |
– |
} |
820 |
– |
|
821 |
– |
/** |
706 |
|
* drainTo(c, n) empties first min(n, size) elements of queue into c |
707 |
|
*/ |
708 |
|
public void testDrainToN() { |
935 |
|
} |
936 |
|
|
937 |
|
/** |
938 |
< |
* tryTransfer waits the amount given, and throws |
1055 |
< |
* InterruptedException when interrupted. |
938 |
> |
* tryTransfer blocks interruptibly if no takers |
939 |
|
*/ |
940 |
|
public void testTryTransfer5() throws InterruptedException { |
941 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
942 |
< |
final CountDownLatch threadStarted = new CountDownLatch(1); |
942 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
943 |
|
assertTrue(q.isEmpty()); |
944 |
|
|
945 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
946 |
|
public void realRun() throws InterruptedException { |
947 |
< |
long t0 = System.nanoTime(); |
1065 |
< |
threadStarted.countDown(); |
947 |
> |
Thread.currentThread().interrupt(); |
948 |
|
try { |
949 |
|
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
950 |
|
shouldThrow(); |
951 |
|
} catch (InterruptedException success) {} |
952 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
953 |
< |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
952 |
> |
assertFalse(Thread.interrupted()); |
953 |
> |
|
954 |
> |
pleaseInterrupt.countDown(); |
955 |
> |
try { |
956 |
> |
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
957 |
> |
shouldThrow(); |
958 |
> |
} catch (InterruptedException success) {} |
959 |
> |
assertFalse(Thread.interrupted()); |
960 |
|
}}); |
961 |
|
|
962 |
< |
threadStarted.await(); |
963 |
< |
while (q.isEmpty()) |
1076 |
< |
Thread.yield(); |
1077 |
< |
Thread.sleep(SHORT_DELAY_MS); |
962 |
> |
await(pleaseInterrupt); |
963 |
> |
assertThreadStaysAlive(t); |
964 |
|
t.interrupt(); |
965 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
965 |
> |
awaitTermination(t); |
966 |
|
checkEmpty(q); |
967 |
|
} |
968 |
|
|
976 |
|
public void realRun() throws InterruptedException { |
977 |
|
long t0 = System.nanoTime(); |
978 |
|
assertFalse(q.tryTransfer(new Object(), |
979 |
< |
SHORT_DELAY_MS, MILLISECONDS)); |
980 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
979 |
> |
timeoutMillis(), MILLISECONDS)); |
980 |
> |
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
981 |
|
checkEmpty(q); |
982 |
|
}}); |
983 |
|
|
984 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
984 |
> |
awaitTermination(t); |
985 |
|
checkEmpty(q); |
986 |
|
} |
987 |
|
|
1017 |
|
assertTrue(q.offer(four)); |
1018 |
|
assertEquals(1, q.size()); |
1019 |
|
long t0 = System.nanoTime(); |
1020 |
< |
assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS)); |
1021 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
1020 |
> |
assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS)); |
1021 |
> |
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
1022 |
|
assertEquals(1, q.size()); |
1023 |
|
assertSame(four, q.poll()); |
1024 |
|
assertNull(q.poll()); |