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root/jsr166/jsr166/src/test/tck/LinkedTransferQueueTest.java

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.26 by jsr166, Tue Oct 19 00:41:14 2010 UTC vs.
Revision 1.47 by jsr166, Mon May 30 22:43:20 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
#	Line 13 | Line 13 | import java.io.ObjectInputStream;
13		import java.io.ObjectOutputStream;
14		import java.util.ArrayList;
15		import java.util.Arrays;
16	+	import java.util.Collection;
17		import java.util.Iterator;
18		import java.util.List;
19		import java.util.NoSuchElementException;
20	<	import java.util.concurrent.*;
20	>	import java.util.concurrent.BlockingQueue;
21	>	import java.util.concurrent.CountDownLatch;
22	>	import java.util.concurrent.Executors;
23	>	import java.util.concurrent.ExecutorService;
24	>	import java.util.concurrent.LinkedTransferQueue;
25		import static java.util.concurrent.TimeUnit.MILLISECONDS;
26	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
27		import junit.framework.Test;
28		import junit.framework.TestSuite;
29
#	Line 39 | Line 45 | public class LinkedTransferQueueTest ext
45		new Generic().testSuite());
46		}
47
42	–	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
43	–	assertTrue(q.isEmpty());
44	–	assertEquals(0, q.size());
45	–	assertNull(q.peek());
46	–	assertNull(q.poll());
47	–	assertNull(q.poll(0, MILLISECONDS));
48	–	assertEquals(q.toString(), "[]");
49	–	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
50	–	assertFalse(q.iterator().hasNext());
51	–	try {
52	–	q.element();
53	–	shouldThrow();
54	–	} catch (NoSuchElementException success) {}
55	–	try {
56	–	q.iterator().next();
57	–	shouldThrow();
58	–	} catch (NoSuchElementException success) {}
59	–	try {
60	–	q.remove();
61	–	shouldThrow();
62	–	} catch (NoSuchElementException success) {}
63	–	}
64	–
48		/**
49		* Constructor builds new queue with size being zero and empty
50		* being true
#	Line 87 | Line 70 | public class LinkedTransferQueueTest ext
70		* NullPointerException
71		*/
72		public void testConstructor3() {
73	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
74		try {
75	<	Integer[] ints = new Integer[SIZE];
92	<	new LinkedTransferQueue(Arrays.asList(ints));
75	>	new LinkedTransferQueue(elements);
76		shouldThrow();
77		} catch (NullPointerException success) {}
78		}
#	Line 99 | Line 82 | public class LinkedTransferQueueTest ext
82		* throws NullPointerException
83		*/
84		public void testConstructor4() {
85	+	Integer[] ints = new Integer[SIZE];
86	+	for (int i = 0; i < SIZE-1; ++i)
87	+	ints[i] = i;
88	+	Collection<Integer> elements = Arrays.asList(ints);
89		try {
90	<	Integer[] ints = new Integer[SIZE];
104	<	for (int i = 0; i < SIZE - 1; ++i) {
105	<	ints[i] = i;
106	<	}
107	<	new LinkedTransferQueue(Arrays.asList(ints));
90	>	new LinkedTransferQueue(elements);
91		shouldThrow();
92		} catch (NullPointerException success) {}
93		}
#	Line 151 | Line 134 | public class LinkedTransferQueueTest ext
134		}
135
136		/**
154	–	* offer(null) throws NullPointerException
155	–	*/
156	–	public void testOfferNull() {
157	–	try {
158	–	LinkedTransferQueue q = new LinkedTransferQueue();
159	–	q.offer(null);
160	–	shouldThrow();
161	–	} catch (NullPointerException success) {}
162	–	}
163	–
164	–	/**
165	–	* add(null) throws NullPointerException
166	–	*/
167	–	public void testAddNull() {
168	–	try {
169	–	LinkedTransferQueue q = new LinkedTransferQueue();
170	–	q.add(null);
171	–	shouldThrow();
172	–	} catch (NullPointerException success) {}
173	–	}
174	–
175	–	/**
176	–	* addAll(null) throws NullPointerException
177	–	*/
178	–	public void testAddAll1() {
179	–	try {
180	–	LinkedTransferQueue q = new LinkedTransferQueue();
181	–	q.addAll(null);
182	–	shouldThrow();
183	–	} catch (NullPointerException success) {}
184	–	}
185	–
186	–	/**
137		* addAll(this) throws IllegalArgumentException
138		*/
139		public void testAddAllSelf() {
#	Line 195 | Line 145 | public class LinkedTransferQueueTest ext
145		}
146
147		/**
198	–	* addAll of a collection with null elements throws NullPointerException
199	–	*/
200	–	public void testAddAll2() {
201	–	try {
202	–	LinkedTransferQueue q = new LinkedTransferQueue();
203	–	Integer[] ints = new Integer[SIZE];
204	–	q.addAll(Arrays.asList(ints));
205	–	shouldThrow();
206	–	} catch (NullPointerException success) {}
207	–	}
208	–
209	–	/**
148		* addAll of a collection with any null elements throws
149		* NullPointerException after possibly adding some elements
150		*/
#	Line 240 | Line 178 | public class LinkedTransferQueueTest ext
178		}
179
180		/**
243	–	* put(null) throws NullPointerException
244	–	*/
245	–	public void testPutNull() throws InterruptedException {
246	–	try {
247	–	LinkedTransferQueue q = new LinkedTransferQueue();
248	–	q.put(null);
249	–	shouldThrow();
250	–	} catch (NullPointerException success) {}
251	–	}
252	–
253	–	/**
181		* all elements successfully put are contained
182		*/
183		public void testPut() {
#	Line 273 | Line 200 | public class LinkedTransferQueueTest ext
200		}
201
202		/**
203	<	* take blocks interruptibly when empty
277	<	*/
278	<	public void testTakeFromEmpty() throws InterruptedException {
279	<	final LinkedTransferQueue q = new LinkedTransferQueue();
280	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
281	<	public void realRun() throws InterruptedException {
282	<	q.take();
283	<	}});
284	<	Thread.sleep(SHORT_DELAY_MS);
285	<	t.interrupt();
286	<	t.join();
287	<	}
288	<
289	<	/**
290	<	* Take removes existing elements until empty, then blocks interruptibly
203	>	* take removes existing elements until empty, then blocks interruptibly
204		*/
205		public void testBlockingTake() throws InterruptedException {
206	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
207	<	Thread t = new Thread(new CheckedRunnable() {
206	>	final BlockingQueue q = populatedQueue(SIZE);
207	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
208	>	Thread t = newStartedThread(new CheckedRunnable() {
209		public void realRun() throws InterruptedException {
210		for (int i = 0; i < SIZE; ++i) {
211	<	assertEquals(i, (int) q.take());
211	>	assertEquals(i, q.take());
212		}
213	+
214	+	Thread.currentThread().interrupt();
215	+	try {
216	+	q.take();
217	+	shouldThrow();
218	+	} catch (InterruptedException success) {}
219	+	assertFalse(Thread.interrupted());
220	+
221	+	pleaseInterrupt.countDown();
222		try {
223		q.take();
224		shouldThrow();
225		} catch (InterruptedException success) {}
226	+	assertFalse(Thread.interrupted());
227		}});
228
229	<	t.start();
230	<	Thread.sleep(SHORT_DELAY_MS);
229	>	await(pleaseInterrupt);
230	>	assertThreadStaysAlive(t);
231		t.interrupt();
232	<	t.join();
309	<	checkEmpty(q);
232	>	awaitTermination(t);
233		}
234
235		/**
#	Line 322 | Line 245 | public class LinkedTransferQueueTest ext
245		}
246
247		/**
248	<	* timed pool with zero timeout succeeds when non-empty, else times out
248	>	* timed poll with zero timeout succeeds when non-empty, else times out
249		*/
250		public void testTimedPoll0() throws InterruptedException {
251		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 334 | Line 257 | public class LinkedTransferQueueTest ext
257		}
258
259		/**
260	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
260	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
261		*/
262		public void testTimedPoll() throws InterruptedException {
263		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
264		for (int i = 0; i < SIZE; ++i) {
265	<	long t0 = System.nanoTime();
265	>	long startTime = System.nanoTime();
266		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
267	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
345	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
267	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
268		}
269	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
269	>	long startTime = System.nanoTime();
270	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
271	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
272		checkEmpty(q);
273		}
274
#	Line 353 | Line 277 | public class LinkedTransferQueueTest ext
277		* returning timeout status
278		*/
279		public void testInterruptedTimedPoll() throws InterruptedException {
280	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
280	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
281	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
282		Thread t = newStartedThread(new CheckedRunnable() {
283		public void realRun() throws InterruptedException {
284		for (int i = 0; i < SIZE; ++i) {
285		long t0 = System.nanoTime();
286		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
287	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
363	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
287	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
288		}
289	+	long t0 = System.nanoTime();
290	+	aboutToWait.countDown();
291		try {
292	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
292	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
293		shouldThrow();
294	<	} catch (InterruptedException success) {}
294	>	} catch (InterruptedException success) {
295	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
296	>	}
297		}});
298
299	<	Thread.sleep(SMALL_DELAY_MS);
299	>	aboutToWait.await();
300	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
301		t.interrupt();
302	<	t.join();
302	>	awaitTermination(t, MEDIUM_DELAY_MS);
303	>	checkEmpty(q);
304	>	}
305	>
306	>	/**
307	>	* timed poll after thread interrupted throws InterruptedException
308	>	* instead of returning timeout status
309	>	*/
310	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
311	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
312	>	Thread t = newStartedThread(new CheckedRunnable() {
313	>	public void realRun() throws InterruptedException {
314	>	Thread.currentThread().interrupt();
315	>	for (int i = 0; i < SIZE; ++i) {
316	>	long t0 = System.nanoTime();
317	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
318	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
319	>	}
320	>	try {
321	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
322	>	shouldThrow();
323	>	} catch (InterruptedException success) {}
324	>	}});
325	>
326	>	awaitTermination(t, MEDIUM_DELAY_MS);
327		checkEmpty(q);
328		}
329
#	Line 425 | Line 378 | public class LinkedTransferQueueTest ext
378		*/
379		public void testRemoveElement() throws InterruptedException {
380		LinkedTransferQueue q = populatedQueue(SIZE);
381	<	for (int i = 1; i < SIZE; i += 2) {
381	>	for (int i = 1; i < SIZE; i+=2) {
382	>	assertTrue(q.contains(i));
383		assertTrue(q.remove(i));
384	+	assertFalse(q.contains(i));
385	+	assertTrue(q.contains(i-1));
386		}
387	<	for (int i = 0; i < SIZE; i += 2) {
387	>	for (int i = 0; i < SIZE; i+=2) {
388	>	assertTrue(q.contains(i));
389		assertTrue(q.remove(i));
390	<	assertFalse(q.remove(i + 1));
390	>	assertFalse(q.contains(i));
391	>	assertFalse(q.remove(i+1));
392	>	assertFalse(q.contains(i+1));
393		}
394		checkEmpty(q);
395		}
#	Line 527 | Line 486 | public class LinkedTransferQueueTest ext
486		}
487
488		/**
489	<	* toArray() contains all elements
489	>	* toArray() contains all elements in FIFO order
490		*/
491	<	public void testToArray() throws InterruptedException {
491	>	public void testToArray() {
492		LinkedTransferQueue q = populatedQueue(SIZE);
493		Object[] o = q.toArray();
494		for (int i = 0; i < o.length; i++) {
495	<	assertEquals(o[i], q.take());
495	>	assertSame(o[i], q.poll());
496		}
497		}
498
499		/**
500	<	* toArray(a) contains all elements
500	>	* toArray(a) contains all elements in FIFO order
501		*/
502	<	public void testToArray2() throws InterruptedException {
502	>	public void testToArray2() {
503		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
504		Integer[] ints = new Integer[SIZE];
505	<	ints = q.toArray(ints);
505	>	Integer[] array = q.toArray(ints);
506	>	assertSame(ints, array);
507		for (int i = 0; i < ints.length; i++) {
508	<	assertEquals(ints[i], q.take());
508	>	assertSame(ints[i], q.poll());
509		}
510		}
511
512		/**
513	<	* toArray(null) throws NullPointerException
554	<	*/
555	<	public void testToArray_BadArg() {
556	<	LinkedTransferQueue q = populatedQueue(SIZE);
557	<	try {
558	<	Object o[] = q.toArray(null);
559	<	shouldThrow();
560	<	} catch (NullPointerException success) {}
561	<	}
562	<
563	<	/**
564	<	* toArray(incompatible array type) throws CCE
513	>	* toArray(incompatible array type) throws ArrayStoreException
514		*/
515		public void testToArray1_BadArg() {
516		LinkedTransferQueue q = populatedQueue(SIZE);
517		try {
518	<	Object o[] = q.toArray(new String[10]);
518	>	q.toArray(new String[10]);
519		shouldThrow();
520		} catch (ArrayStoreException success) {}
521		}
#	Line 643 | Line 592 | public class LinkedTransferQueueTest ext
592		LinkedTransferQueue q = populatedQueue(SIZE);
593		String s = q.toString();
594		for (int i = 0; i < SIZE; ++i) {
595	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
595	>	assertTrue(s.contains(String.valueOf(i)));
596		}
597		}
598
#	Line 652 | Line 601 | public class LinkedTransferQueueTest ext
601		*/
602		public void testOfferInExecutor() {
603		final LinkedTransferQueue q = new LinkedTransferQueue();
604	<	q.add(one);
656	<	q.add(two);
604	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
605		ExecutorService executor = Executors.newFixedThreadPool(2);
606
607		executor.execute(new CheckedRunnable() {
608	<	public void realRun() {
609	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
608	>	public void realRun() throws InterruptedException {
609	>	threadsStarted.await();
610	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
611		}});
612
613		executor.execute(new CheckedRunnable() {
614		public void realRun() throws InterruptedException {
615	<	Thread.sleep(SMALL_DELAY_MS);
615	>	threadsStarted.await();
616		assertSame(one, q.take());
617	+	checkEmpty(q);
618		}});
619
620		joinPool(executor);
#	Line 675 | Line 625 | public class LinkedTransferQueueTest ext
625		*/
626		public void testPollInExecutor() {
627		final LinkedTransferQueue q = new LinkedTransferQueue();
628	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
629		ExecutorService executor = Executors.newFixedThreadPool(2);
630
631		executor.execute(new CheckedRunnable() {
632		public void realRun() throws InterruptedException {
633		assertNull(q.poll());
634	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
635	<	assertTrue(q.isEmpty());
634	>	threadsStarted.await();
635	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
636	>	checkEmpty(q);
637		}});
638
639		executor.execute(new CheckedRunnable() {
640		public void realRun() throws InterruptedException {
641	<	Thread.sleep(SMALL_DELAY_MS);
641	>	threadsStarted.await();
642		q.put(one);
643		}});
644
#	Line 712 | Line 664 | public class LinkedTransferQueueTest ext
664		LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
665
666		assertEquals(q.size(), r.size());
667	+	assertEquals(q.toString(), r.toString());
668	+	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
669		while (!q.isEmpty()) {
670		assertEquals(q.remove(), r.remove());
671		}
672		}
673
674		/**
721	–	* drainTo(null) throws NullPointerException
722	–	*/
723	–	public void testDrainToNull() {
724	–	LinkedTransferQueue q = populatedQueue(SIZE);
725	–	try {
726	–	q.drainTo(null);
727	–	shouldThrow();
728	–	} catch (NullPointerException success) {}
729	–	}
730	–
731	–	/**
732	–	* drainTo(this) throws IllegalArgumentException
733	–	*/
734	–	public void testDrainToSelf() {
735	–	LinkedTransferQueue q = populatedQueue(SIZE);
736	–	try {
737	–	q.drainTo(q);
738	–	shouldThrow();
739	–	} catch (IllegalArgumentException success) {}
740	–	}
741	–
742	–	/**
675		* drainTo(c) empties queue into another collection c
676		*/
677		public void testDrainTo() {
#	Line 780 | Line 712 | public class LinkedTransferQueueTest ext
712		for (int i = 0; i < SIZE; ++i) {
713		assertEquals(l.get(i), i);
714		}
715	<	t.join();
715	>	awaitTermination(t, MEDIUM_DELAY_MS);
716		assertTrue(q.size() + l.size() >= SIZE);
717		}
718
719		/**
788	–	* drainTo(null, n) throws NullPointerException
789	–	*/
790	–	public void testDrainToNullN() {
791	–	LinkedTransferQueue q = populatedQueue(SIZE);
792	–	try {
793	–	q.drainTo(null, SIZE);
794	–	shouldThrow();
795	–	} catch (NullPointerException success) {}
796	–	}
797	–
798	–	/**
799	–	* drainTo(this, n) throws IllegalArgumentException
800	–	*/
801	–	public void testDrainToSelfN() {
802	–	LinkedTransferQueue q = populatedQueue(SIZE);
803	–	try {
804	–	q.drainTo(q, SIZE);
805	–	shouldThrow();
806	–	} catch (IllegalArgumentException success) {}
807	–	}
808	–
809	–	/**
720		* drainTo(c, n) empties first min(n, size) elements of queue into c
721		*/
722		public void testDrainToN() {
#	Line 836 | Line 746 | public class LinkedTransferQueueTest ext
746		final LinkedTransferQueue q = new LinkedTransferQueue();
747		assertEquals(q.getWaitingConsumerCount(), 0);
748		assertFalse(q.hasWaitingConsumer());
749	+	final CountDownLatch threadStarted = new CountDownLatch(1);
750
751		Thread t = newStartedThread(new CheckedRunnable() {
752		public void realRun() throws InterruptedException {
753	<	Thread.sleep(SMALL_DELAY_MS);
754	<	assertTrue(q.hasWaitingConsumer());
844	<	assertEquals(q.getWaitingConsumerCount(), 1);
845	<	assertTrue(q.offer(one));
846	<	assertFalse(q.hasWaitingConsumer());
753	>	threadStarted.countDown();
754	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
755		assertEquals(q.getWaitingConsumerCount(), 0);
756	+	assertFalse(q.hasWaitingConsumer());
757		}});
758
759	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
759	>	threadStarted.await();
760	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
761	>	assertEquals(q.getWaitingConsumerCount(), 1);
762	>	assertTrue(q.hasWaitingConsumer());
763	>
764	>	assertTrue(q.offer(one));
765		assertEquals(q.getWaitingConsumerCount(), 0);
766		assertFalse(q.hasWaitingConsumer());
767	<	t.join();
767	>
768	>	awaitTermination(t, MEDIUM_DELAY_MS);
769		}
770
771		/**
#	Line 871 | Line 786 | public class LinkedTransferQueueTest ext
786		public void testTransfer2() throws InterruptedException {
787		final LinkedTransferQueue<Integer> q
788		= new LinkedTransferQueue<Integer>();
789	+	final CountDownLatch threadStarted = new CountDownLatch(1);
790
791		Thread t = newStartedThread(new CheckedRunnable() {
792		public void realRun() throws InterruptedException {
793	<	q.transfer(SIZE);
794	<	assertTrue(q.isEmpty());
793	>	threadStarted.countDown();
794	>	q.transfer(five);
795	>	checkEmpty(q);
796		}});
797
798	<	Thread.sleep(SHORT_DELAY_MS);
798	>	threadStarted.await();
799	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
800		assertEquals(1, q.size());
801	<	assertEquals(SIZE, (int) q.poll());
802	<	assertTrue(q.isEmpty());
803	<	t.join();
801	>	assertSame(five, q.poll());
802	>	checkEmpty(q);
803	>	awaitTermination(t, MEDIUM_DELAY_MS);
804		}
805
806		/**
#	Line 894 | Line 812 | public class LinkedTransferQueueTest ext
812
813		Thread first = newStartedThread(new CheckedRunnable() {
814		public void realRun() throws InterruptedException {
815	<	Integer i = SIZE + 1;
816	<	q.transfer(i);
899	<	assertTrue(!q.contains(i));
815	>	q.transfer(four);
816	>	assertTrue(!q.contains(four));
817		assertEquals(1, q.size());
818		}});
819
820		Thread interruptedThread = newStartedThread(
821		new CheckedInterruptedRunnable() {
822		public void realRun() throws InterruptedException {
823	<	while (q.size() == 0)
823	>	while (q.isEmpty())
824		Thread.yield();
825	<	q.transfer(SIZE);
825	>	q.transfer(five);
826		}});
827
828		while (q.size() < 2)
829		Thread.yield();
830		assertEquals(2, q.size());
831	<	assertEquals(SIZE + 1, (int) q.poll());
831	>	assertSame(four, q.poll());
832		first.join();
833		assertEquals(1, q.size());
834		interruptedThread.interrupt();
835		interruptedThread.join();
836	<	assertEquals(0, q.size());
920	<	assertTrue(q.isEmpty());
836	>	checkEmpty(q);
837		}
838
839		/**
#	Line 934 | Line 850 | public class LinkedTransferQueueTest ext
850		assertSame(three, q.poll());
851		}});
852
853	<	Thread.sleep(SHORT_DELAY_MS);
853	>	while (q.isEmpty())
854	>	Thread.yield();
855	>	assertFalse(q.isEmpty());
856	>	assertEquals(1, q.size());
857		assertTrue(q.offer(three));
858		assertSame(four, q.poll());
859	<	t.join();
859	>	awaitTermination(t, MEDIUM_DELAY_MS);
860		}
861
862		/**
#	Line 950 | Line 869 | public class LinkedTransferQueueTest ext
869
870		Thread t = newStartedThread(new CheckedRunnable() {
871		public void realRun() throws InterruptedException {
872	<	q.transfer(SIZE);
872	>	q.transfer(four);
873		checkEmpty(q);
874		}});
875
876	<	Thread.sleep(SHORT_DELAY_MS);
877	<	assertEquals(SIZE, (int) q.take());
876	>	while (q.isEmpty())
877	>	Thread.yield();
878	>	assertFalse(q.isEmpty());
879	>	assertEquals(1, q.size());
880	>	assertSame(four, q.take());
881		checkEmpty(q);
882	<	t.join();
882	>	awaitTermination(t, MEDIUM_DELAY_MS);
883		}
884
885		/**
#	Line 995 | Line 917 | public class LinkedTransferQueueTest ext
917		while (! q.hasWaitingConsumer())
918		Thread.yield();
919		assertTrue(q.hasWaitingConsumer());
920	<	assertTrue(q.isEmpty());
999	<	assertEquals(q.size(), 0);
920	>	checkEmpty(q);
921		assertTrue(q.tryTransfer(hotPotato));
922		}});
923
924		assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
925		checkEmpty(q);
926	<	t.join();
926	>	awaitTermination(t, MEDIUM_DELAY_MS);
927		}
928
929		/**
#	Line 1018 | Line 939 | public class LinkedTransferQueueTest ext
939		while (! q.hasWaitingConsumer())
940		Thread.yield();
941		assertTrue(q.hasWaitingConsumer());
942	<	assertTrue(q.isEmpty());
1022	<	assertEquals(q.size(), 0);
942	>	checkEmpty(q);
943		assertTrue(q.tryTransfer(hotPotato));
944		}});
945
946		assertSame(q.take(), hotPotato);
947		checkEmpty(q);
948	<	t.join();
948	>	awaitTermination(t, MEDIUM_DELAY_MS);
949		}
950
951		/**
952	<	* tryTransfer waits the amount given if interrupted, and
1033	<	* throws interrupted exception
952	>	* tryTransfer blocks interruptibly if no takers
953		*/
954		public void testTryTransfer5() throws InterruptedException {
955		final LinkedTransferQueue q = new LinkedTransferQueue();
956	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
957	+	assertTrue(q.isEmpty());
958
959	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
959	>	Thread t = newStartedThread(new CheckedRunnable() {
960		public void realRun() throws InterruptedException {
961	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
961	>	Thread.currentThread().interrupt();
962	>	try {
963	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
964	>	shouldThrow();
965	>	} catch (InterruptedException success) {}
966	>	assertFalse(Thread.interrupted());
967	>
968	>	pleaseInterrupt.countDown();
969	>	try {
970	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
971	>	shouldThrow();
972	>	} catch (InterruptedException success) {}
973	>	assertFalse(Thread.interrupted());
974		}});
975
976	<	Thread.sleep(SMALL_DELAY_MS);
977	<	toInterrupt.interrupt();
978	<	toInterrupt.join();
976	>	await(pleaseInterrupt);
977	>	assertThreadStaysAlive(t);
978	>	t.interrupt();
979	>	awaitTermination(t);
980	>	checkEmpty(q);
981		}
982
983		/**
984	<	* tryTransfer gives up after the timeout and return false
984	>	* tryTransfer gives up after the timeout and returns false
985		*/
986		public void testTryTransfer6() throws InterruptedException {
987		final LinkedTransferQueue q = new LinkedTransferQueue();
988
989		Thread t = newStartedThread(new CheckedRunnable() {
990		public void realRun() throws InterruptedException {
991	+	long t0 = System.nanoTime();
992		assertFalse(q.tryTransfer(new Object(),
993	<	SHORT_DELAY_MS, MILLISECONDS));
993	>	timeoutMillis(), MILLISECONDS));
994	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
995	>	checkEmpty(q);
996		}});
997
998	<	Thread.sleep(SMALL_DELAY_MS);
998	>	awaitTermination(t);
999		checkEmpty(q);
1062	–	t.join();
1000		}
1001
1002		/**
#	Line 1073 | Line 1010 | public class LinkedTransferQueueTest ext
1010		Thread t = newStartedThread(new CheckedRunnable() {
1011		public void realRun() throws InterruptedException {
1012		assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1013	<	assertTrue(q.isEmpty());
1013	>	checkEmpty(q);
1014		}});
1015
1016	<	Thread.sleep(SHORT_DELAY_MS);
1016	>	while (q.size() != 2)
1017	>	Thread.yield();
1018		assertEquals(2, q.size());
1019		assertSame(four, q.poll());
1020		assertSame(five, q.poll());
1021		checkEmpty(q);
1022	<	t.join();
1022	>	awaitTermination(t, MEDIUM_DELAY_MS);
1023		}
1024
1025		/**
1026	<	* tryTransfer attempts to enqueue into the q and fails returning
1027	<	* false not enqueueing and the successive poll is null
1026	>	* tryTransfer attempts to enqueue into the queue and fails
1027	>	* returning false not enqueueing and the successive poll is null
1028		*/
1029		public void testTryTransfer8() throws InterruptedException {
1030		final LinkedTransferQueue q = new LinkedTransferQueue();
1031		assertTrue(q.offer(four));
1032		assertEquals(1, q.size());
1033	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1033	>	long t0 = System.nanoTime();
1034	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1035	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
1036		assertEquals(1, q.size());
1037		assertSame(four, q.poll());
1038		assertNull(q.poll());
#	Line 1101 | Line 1041 | public class LinkedTransferQueueTest ext
1041
1042		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1043		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1044	<	assertTrue(q.isEmpty());
1044	>	checkEmpty(q);
1045		for (int i = 0; i < n; i++) {
1046		assertEquals(i, q.size());
1047		assertTrue(q.offer(i));

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