19 |
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import java.util.concurrent.CountDownLatch; |
20 |
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import java.util.concurrent.Executors; |
21 |
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import java.util.concurrent.ExecutorService; |
22 |
+ |
import java.util.concurrent.ThreadLocalRandom; |
23 |
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24 |
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import junit.framework.Test; |
25 |
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|
42 |
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} |
43 |
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|
44 |
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public static Test suite() { |
45 |
+ |
class Implementation implements CollectionImplementation { |
46 |
+ |
public Class<?> klazz() { return ArrayBlockingQueue.class; } |
47 |
+ |
public Collection emptyCollection() { return new ArrayBlockingQueue(SIZE, false); } |
48 |
+ |
public Object makeElement(int i) { return i; } |
49 |
+ |
public boolean isConcurrent() { return true; } |
50 |
+ |
public boolean permitsNulls() { return false; } |
51 |
+ |
} |
52 |
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return newTestSuite(ArrayBlockingQueueTest.class, |
53 |
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new Fair().testSuite(), |
54 |
< |
new NonFair().testSuite()); |
54 |
> |
new NonFair().testSuite(), |
55 |
> |
CollectionTest.testSuite(new Implementation())); |
56 |
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} |
57 |
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|
58 |
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/** |
59 |
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* Returns a new queue of given size containing consecutive |
60 |
< |
* Integers 0 ... n. |
60 |
> |
* Integers 0 ... n - 1. |
61 |
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*/ |
62 |
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private ArrayBlockingQueue<Integer> populatedQueue(int n) { |
63 |
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ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n); |
67 |
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assertFalse(q.isEmpty()); |
68 |
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assertEquals(0, q.remainingCapacity()); |
69 |
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assertEquals(n, q.size()); |
70 |
+ |
assertEquals((Integer) 0, q.peek()); |
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return q; |
72 |
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} |
73 |
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|
461 |
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final CountDownLatch aboutToWait = new CountDownLatch(1); |
462 |
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Thread t = newStartedThread(new CheckedRunnable() { |
463 |
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public void realRun() throws InterruptedException { |
464 |
+ |
long startTime = System.nanoTime(); |
465 |
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for (int i = 0; i < SIZE; ++i) { |
455 |
– |
long t0 = System.nanoTime(); |
466 |
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assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
457 |
– |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
467 |
|
} |
459 |
– |
long t0 = System.nanoTime(); |
468 |
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aboutToWait.countDown(); |
469 |
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try { |
470 |
< |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
470 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
471 |
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shouldThrow(); |
472 |
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} catch (InterruptedException success) { |
473 |
< |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
473 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
474 |
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} |
475 |
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}}); |
476 |
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|
477 |
< |
aboutToWait.await(); |
478 |
< |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
477 |
> |
await(aboutToWait); |
478 |
> |
waitForThreadToEnterWaitState(t); |
479 |
|
t.interrupt(); |
480 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
480 |
> |
awaitTermination(t); |
481 |
|
checkEmpty(q); |
482 |
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} |
483 |
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|
601 |
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} |
602 |
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} |
603 |
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|
604 |
< |
void checkToArray(ArrayBlockingQueue q) { |
604 |
> |
void checkToArray(ArrayBlockingQueue<Integer> q) { |
605 |
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int size = q.size(); |
606 |
< |
Object[] o = q.toArray(); |
607 |
< |
assertEquals(size, o.length); |
606 |
> |
Object[] a1 = q.toArray(); |
607 |
> |
assertEquals(size, a1.length); |
608 |
> |
Integer[] a2 = q.toArray(new Integer[0]); |
609 |
> |
assertEquals(size, a2.length); |
610 |
> |
Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]); |
611 |
> |
assertEquals(size, a3.length); |
612 |
> |
Integer[] a4 = new Integer[size]; |
613 |
> |
assertSame(a4, q.toArray(a4)); |
614 |
> |
Integer[] a5 = new Integer[size + 1]; |
615 |
> |
Arrays.fill(a5, 42); |
616 |
> |
assertSame(a5, q.toArray(a5)); |
617 |
> |
Integer[] a6 = new Integer[size + 2]; |
618 |
> |
Arrays.fill(a6, 42); |
619 |
> |
assertSame(a6, q.toArray(a6)); |
620 |
> |
Object[][] as = { a1, a2, a3, a4, a5, a6 }; |
621 |
> |
for (Object[] a : as) { |
622 |
> |
if (a.length > size) assertNull(a[size]); |
623 |
> |
if (a.length > size + 1) assertEquals(42, a[size + 1]); |
624 |
> |
} |
625 |
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Iterator it = q.iterator(); |
626 |
+ |
Integer s = q.peek(); |
627 |
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for (int i = 0; i < size; i++) { |
628 |
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Integer x = (Integer) it.next(); |
629 |
< |
assertEquals((Integer)o[0] + i, (int) x); |
630 |
< |
assertSame(o[i], x); |
629 |
> |
assertEquals(s + i, (int) x); |
630 |
> |
for (Object[] a : as) |
631 |
> |
assertSame(a1[i], x); |
632 |
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} |
633 |
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} |
634 |
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|
635 |
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/** |
636 |
< |
* toArray() contains all elements in FIFO order |
636 |
> |
* toArray() and toArray(a) contain all elements in FIFO order |
637 |
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*/ |
638 |
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public void testToArray() { |
639 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
640 |
< |
for (int i = 0; i < SIZE; i++) { |
639 |
> |
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
640 |
> |
final int size = rnd.nextInt(6); |
641 |
> |
final int capacity = Math.max(1, size + rnd.nextInt(size + 1)); |
642 |
> |
ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
643 |
> |
for (int i = 0; i < size; i++) { |
644 |
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checkToArray(q); |
645 |
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q.add(i); |
646 |
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} |
647 |
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// Provoke wraparound |
648 |
< |
for (int i = 0; i < SIZE; i++) { |
648 |
> |
int added = size * 2; |
649 |
> |
for (int i = 0; i < added; i++) { |
650 |
|
checkToArray(q); |
651 |
< |
assertEquals(i, q.poll()); |
652 |
< |
checkToArray(q); |
622 |
< |
q.add(SIZE + i); |
623 |
< |
} |
624 |
< |
for (int i = 0; i < SIZE; i++) { |
625 |
< |
checkToArray(q); |
626 |
< |
assertEquals(SIZE + i, q.poll()); |
651 |
> |
assertEquals((Integer) i, q.poll()); |
652 |
> |
q.add(size + i); |
653 |
|
} |
628 |
– |
} |
629 |
– |
|
630 |
– |
void checkToArray2(ArrayBlockingQueue q) { |
631 |
– |
int size = q.size(); |
632 |
– |
Integer[] a1 = size == 0 ? null : new Integer[size-1]; |
633 |
– |
Integer[] a2 = new Integer[size]; |
634 |
– |
Integer[] a3 = new Integer[size+2]; |
635 |
– |
if (size > 0) Arrays.fill(a1, 42); |
636 |
– |
Arrays.fill(a2, 42); |
637 |
– |
Arrays.fill(a3, 42); |
638 |
– |
Integer[] b1 = size == 0 ? null : (Integer[]) q.toArray(a1); |
639 |
– |
Integer[] b2 = (Integer[]) q.toArray(a2); |
640 |
– |
Integer[] b3 = (Integer[]) q.toArray(a3); |
641 |
– |
assertSame(a2, b2); |
642 |
– |
assertSame(a3, b3); |
643 |
– |
Iterator it = q.iterator(); |
654 |
|
for (int i = 0; i < size; i++) { |
655 |
< |
Integer x = (Integer) it.next(); |
656 |
< |
assertSame(b1[i], x); |
647 |
< |
assertEquals(b1[0] + i, (int) x); |
648 |
< |
assertSame(b2[i], x); |
649 |
< |
assertSame(b3[i], x); |
650 |
< |
} |
651 |
< |
assertNull(a3[size]); |
652 |
< |
assertEquals(42, (int) a3[size+1]); |
653 |
< |
if (size > 0) { |
654 |
< |
assertNotSame(a1, b1); |
655 |
< |
assertEquals(size, b1.length); |
656 |
< |
for (int i = 0; i < a1.length; i++) { |
657 |
< |
assertEquals(42, (int) a1[i]); |
658 |
< |
} |
659 |
< |
} |
660 |
< |
} |
661 |
< |
|
662 |
< |
/** |
663 |
< |
* toArray(a) contains all elements in FIFO order |
664 |
< |
*/ |
665 |
< |
public void testToArray2() { |
666 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
667 |
< |
for (int i = 0; i < SIZE; i++) { |
668 |
< |
checkToArray2(q); |
669 |
< |
q.add(i); |
670 |
< |
} |
671 |
< |
// Provoke wraparound |
672 |
< |
for (int i = 0; i < SIZE; i++) { |
673 |
< |
checkToArray2(q); |
674 |
< |
assertEquals(i, q.poll()); |
675 |
< |
checkToArray2(q); |
676 |
< |
q.add(SIZE + i); |
677 |
< |
} |
678 |
< |
for (int i = 0; i < SIZE; i++) { |
679 |
< |
checkToArray2(q); |
680 |
< |
assertEquals(SIZE + i, q.poll()); |
655 |
> |
checkToArray(q); |
656 |
> |
assertEquals((Integer) (added + i), q.poll()); |
657 |
|
} |
658 |
|
} |
659 |
|
|
660 |
|
/** |
661 |
|
* toArray(incompatible array type) throws ArrayStoreException |
662 |
|
*/ |
663 |
< |
public void testToArray1_BadArg() { |
663 |
> |
public void testToArray_incompatibleArrayType() { |
664 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
665 |
|
try { |
666 |
|
q.toArray(new String[10]); |
667 |
|
shouldThrow(); |
668 |
|
} catch (ArrayStoreException success) {} |
669 |
+ |
try { |
670 |
+ |
q.toArray(new String[0]); |
671 |
+ |
shouldThrow(); |
672 |
+ |
} catch (ArrayStoreException success) {} |
673 |
|
} |
674 |
|
|
675 |
|
/** |
768 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
769 |
|
q.add(one); |
770 |
|
q.add(two); |
791 |
– |
ExecutorService executor = Executors.newFixedThreadPool(2); |
771 |
|
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
772 |
< |
executor.execute(new CheckedRunnable() { |
773 |
< |
public void realRun() throws InterruptedException { |
774 |
< |
assertFalse(q.offer(three)); |
775 |
< |
threadsStarted.await(); |
776 |
< |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
777 |
< |
assertEquals(0, q.remainingCapacity()); |
778 |
< |
}}); |
779 |
< |
|
780 |
< |
executor.execute(new CheckedRunnable() { |
781 |
< |
public void realRun() throws InterruptedException { |
782 |
< |
threadsStarted.await(); |
783 |
< |
assertEquals(0, q.remainingCapacity()); |
784 |
< |
assertSame(one, q.take()); |
785 |
< |
}}); |
786 |
< |
|
787 |
< |
joinPool(executor); |
772 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
773 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
774 |
> |
executor.execute(new CheckedRunnable() { |
775 |
> |
public void realRun() throws InterruptedException { |
776 |
> |
assertFalse(q.offer(three)); |
777 |
> |
threadsStarted.await(); |
778 |
> |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
779 |
> |
assertEquals(0, q.remainingCapacity()); |
780 |
> |
}}); |
781 |
> |
|
782 |
> |
executor.execute(new CheckedRunnable() { |
783 |
> |
public void realRun() throws InterruptedException { |
784 |
> |
threadsStarted.await(); |
785 |
> |
assertEquals(0, q.remainingCapacity()); |
786 |
> |
assertSame(one, q.take()); |
787 |
> |
}}); |
788 |
> |
} |
789 |
|
} |
790 |
|
|
791 |
|
/** |
794 |
|
public void testPollInExecutor() { |
795 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
796 |
|
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
797 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
798 |
< |
executor.execute(new CheckedRunnable() { |
799 |
< |
public void realRun() throws InterruptedException { |
800 |
< |
assertNull(q.poll()); |
801 |
< |
threadsStarted.await(); |
802 |
< |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
803 |
< |
checkEmpty(q); |
804 |
< |
}}); |
805 |
< |
|
806 |
< |
executor.execute(new CheckedRunnable() { |
807 |
< |
public void realRun() throws InterruptedException { |
808 |
< |
threadsStarted.await(); |
809 |
< |
q.put(one); |
810 |
< |
}}); |
811 |
< |
|
812 |
< |
joinPool(executor); |
797 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
798 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
799 |
> |
executor.execute(new CheckedRunnable() { |
800 |
> |
public void realRun() throws InterruptedException { |
801 |
> |
assertNull(q.poll()); |
802 |
> |
threadsStarted.await(); |
803 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
804 |
> |
checkEmpty(q); |
805 |
> |
}}); |
806 |
> |
|
807 |
> |
executor.execute(new CheckedRunnable() { |
808 |
> |
public void realRun() throws InterruptedException { |
809 |
> |
threadsStarted.await(); |
810 |
> |
q.put(one); |
811 |
> |
}}); |
812 |
> |
} |
813 |
|
} |
814 |
|
|
815 |
|
/** |