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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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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 John Vint |
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*/ |
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new Generic().testSuite()); |
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} |
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|
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void checkEmpty(BlockingQueue q) { |
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try { |
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assertTrue(q.isEmpty()); |
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assertEquals(0, q.size()); |
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assertNull(q.peek()); |
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assertNull(q.poll()); |
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assertNull(q.poll(0, MILLISECONDS)); |
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assertEquals(q.toString(), "[]"); |
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assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
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assertFalse(q.iterator().hasNext()); |
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try { |
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q.element(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) {} |
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try { |
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q.iterator().next(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) {} |
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try { |
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q.remove(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) {} |
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} catch (InterruptedException ie) { |
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threadUnexpectedException(ie); |
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} |
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} |
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|
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/** |
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* Constructor builds new queue with size being zero and empty |
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* being true |
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* take removes existing elements until empty, then blocks interruptibly |
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*/ |
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public void testBlockingTake() throws InterruptedException { |
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final BlockingQueue<Integer> q = populatedQueue(SIZE); |
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final CountDownLatch aboutToWait = new CountDownLatch(1); |
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final BlockingQueue q = populatedQueue(SIZE); |
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final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
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Thread t = newStartedThread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, (int) q.take()); |
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assertEquals(i, q.take()); |
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} |
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aboutToWait.countDown(); |
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|
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Thread.currentThread().interrupt(); |
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try { |
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q.take(); |
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shouldThrow(); |
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} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
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|
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pleaseInterrupt.countDown(); |
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try { |
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q.take(); |
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shouldThrow(); |
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} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
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}}); |
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aboutToWait.await(); |
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waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
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await(pleaseInterrupt); |
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assertThreadStaysAlive(t); |
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t.interrupt(); |
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awaitTermination(t, MEDIUM_DELAY_MS); |
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checkEmpty(q); |
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awaitTermination(t); |
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} |
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/** |
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public void testTimedPoll() throws InterruptedException { |
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LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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long t0 = System.nanoTime(); |
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assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS)); |
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assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
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} |
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long t0 = System.nanoTime(); |
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assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
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assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
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long startTime = System.nanoTime(); |
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assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
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assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
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} |
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long startTime = System.nanoTime(); |
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assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
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assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
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checkEmpty(q); |
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} |
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*/ |
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public void testRemoveElement() throws InterruptedException { |
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LinkedTransferQueue q = populatedQueue(SIZE); |
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for (int i = 1; i < SIZE; i += 2) { |
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for (int i = 1; i < SIZE; i+=2) { |
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assertTrue(q.contains(i)); |
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assertTrue(q.remove(i)); |
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assertFalse(q.contains(i)); |
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assertTrue(q.contains(i-1)); |
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} |
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for (int i = 0; i < SIZE; i += 2) { |
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for (int i = 0; i < SIZE; i+=2) { |
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assertTrue(q.contains(i)); |
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assertTrue(q.remove(i)); |
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assertFalse(q.remove(i + 1)); |
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assertFalse(q.contains(i)); |
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assertFalse(q.remove(i+1)); |
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assertFalse(q.contains(i+1)); |
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} |
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checkEmpty(q); |
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} |
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LinkedTransferQueue q = populatedQueue(SIZE); |
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String s = q.toString(); |
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for (int i = 0; i < SIZE; ++i) { |
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assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
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assertTrue(s.contains(String.valueOf(i))); |
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} |
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} |
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*/ |
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public void testOfferInExecutor() { |
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final LinkedTransferQueue q = new LinkedTransferQueue(); |
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final CountDownLatch threadsStarted = new CountDownLatch(2); |
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final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
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ExecutorService executor = Executors.newFixedThreadPool(2); |
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executor.execute(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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threadsStarted.countDown(); |
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threadsStarted.await(); |
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assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS)); |
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assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
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}}); |
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executor.execute(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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threadsStarted.countDown(); |
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threadsStarted.await(); |
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assertSame(one, q.take()); |
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checkEmpty(q); |
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*/ |
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public void testPollInExecutor() { |
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final LinkedTransferQueue q = new LinkedTransferQueue(); |
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final CountDownLatch threadsStarted = new CountDownLatch(2); |
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final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
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ExecutorService executor = Executors.newFixedThreadPool(2); |
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|
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executor.execute(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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assertNull(q.poll()); |
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threadsStarted.countDown(); |
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threadsStarted.await(); |
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assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS)); |
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assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
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checkEmpty(q); |
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}}); |
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executor.execute(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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threadsStarted.countDown(); |
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threadsStarted.await(); |
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q.put(one); |
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}}); |
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} |
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/** |
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* tryTransfer waits the amount given if interrupted, and |
1076 |
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* throws interrupted exception |
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* tryTransfer blocks interruptibly if no takers |
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*/ |
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public void testTryTransfer5() throws InterruptedException { |
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final LinkedTransferQueue q = new LinkedTransferQueue(); |
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final CountDownLatch threadStarted = new CountDownLatch(1); |
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final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
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assertTrue(q.isEmpty()); |
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|
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Thread t = newStartedThread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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long t0 = System.nanoTime(); |
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threadStarted.countDown(); |
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Thread.currentThread().interrupt(); |
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try { |
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q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
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shouldThrow(); |
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} catch (InterruptedException success) {} |
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assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
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assertFalse(Thread.interrupted()); |
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|
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pleaseInterrupt.countDown(); |
1075 |
> |
try { |
1076 |
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q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
1077 |
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shouldThrow(); |
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} catch (InterruptedException success) {} |
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> |
assertFalse(Thread.interrupted()); |
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}}); |
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threadStarted.await(); |
1083 |
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Thread.sleep(SHORT_DELAY_MS); |
1082 |
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await(pleaseInterrupt); |
1083 |
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assertThreadStaysAlive(t); |
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t.interrupt(); |
1085 |
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awaitTermination(t, MEDIUM_DELAY_MS); |
1085 |
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awaitTermination(t); |
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checkEmpty(q); |
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} |
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|
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public void realRun() throws InterruptedException { |
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long t0 = System.nanoTime(); |
1098 |
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assertFalse(q.tryTransfer(new Object(), |
1099 |
< |
SHORT_DELAY_MS, MILLISECONDS)); |
1100 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
1099 |
> |
timeoutMillis(), MILLISECONDS)); |
1100 |
> |
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
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checkEmpty(q); |
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}}); |
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1104 |
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awaitTermination(t, MEDIUM_DELAY_MS); |
1104 |
> |
awaitTermination(t); |
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checkEmpty(q); |
1106 |
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} |
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1129 |
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} |
1130 |
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1131 |
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/** |
1132 |
< |
* tryTransfer attempts to enqueue into the q and fails returning |
1133 |
< |
* false not enqueueing and the successive poll is null |
1132 |
> |
* tryTransfer attempts to enqueue into the queue and fails |
1133 |
> |
* returning false not enqueueing and the successive poll is null |
1134 |
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*/ |
1135 |
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public void testTryTransfer8() throws InterruptedException { |
1136 |
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final LinkedTransferQueue q = new LinkedTransferQueue(); |
1137 |
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assertTrue(q.offer(four)); |
1138 |
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assertEquals(1, q.size()); |
1139 |
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long t0 = System.nanoTime(); |
1140 |
< |
assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS)); |
1141 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
1140 |
> |
assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS)); |
1141 |
> |
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
1142 |
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assertEquals(1, q.size()); |
1143 |
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assertSame(four, q.poll()); |
1144 |
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assertNull(q.poll()); |