18f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle/* 28f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * Written by Doug Lea with assistance from members of JCP JSR-166 38f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * Expert Group and released to the public domain, as explained at 48f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * http://creativecommons.org/publicdomain/zero/1.0/ 58f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * Other contributors include Andrew Wright, Jeffrey Hayes, 68f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * Pat Fisher, Mike Judd. 78f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 88f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 98f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravlepackage jsr166; 108f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 118f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport junit.framework.*; 128f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.Arrays; 138f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.ArrayList; 148f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.Collection; 158f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.Iterator; 168f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.NoSuchElementException; 178f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.Queue; 188f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.concurrent.BlockingQueue; 198f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.concurrent.CountDownLatch; 208f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.concurrent.Executors; 218f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.concurrent.ExecutorService; 228f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport java.util.concurrent.SynchronousQueue; 238f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravleimport static java.util.concurrent.TimeUnit.MILLISECONDS; 248f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 258f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravlepublic class SynchronousQueueTest extends JSR166TestCase { 268f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 278f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 288f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * Any SynchronousQueue is both empty and full 298f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 308f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testEmptyFull() { testEmptyFull(false); } 318f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testEmptyFull_fair() { testEmptyFull(true); } 328f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testEmptyFull(boolean fair) { 338f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 348f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(q.isEmpty()); 358f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, q.size()); 368f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, q.remainingCapacity()); 378f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.offer(zero)); 388f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 398f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 408f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 418f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * offer fails if no active taker 428f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 438f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testOffer() { testOffer(false); } 448f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testOffer_fair() { testOffer(true); } 458f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testOffer(boolean fair) { 468f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle SynchronousQueue q = new SynchronousQueue(fair); 478f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.offer(one)); 488f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 498f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 508f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 518f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * add throws IllegalStateException if no active taker 528f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 538f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testAdd() { testAdd(false); } 548f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testAdd_fair() { testAdd(true); } 558f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testAdd(boolean fair) { 568f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle SynchronousQueue q = new SynchronousQueue(fair); 578f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, q.remainingCapacity()); 588f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 598f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.add(one); 608f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 618f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (IllegalStateException success) {} 628f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 638f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 648f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 658f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * addAll(this) throws IllegalArgumentException 668f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 678f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testAddAll_self() { testAddAll_self(false); } 688f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testAddAll_self_fair() { testAddAll_self(true); } 698f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testAddAll_self(boolean fair) { 708f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle SynchronousQueue q = new SynchronousQueue(fair); 718f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 728f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.addAll(q); 738f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 748f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (IllegalArgumentException success) {} 758f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 768f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 778f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 788f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * addAll throws ISE if no active taker 798f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 808f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testAddAll_ISE() { testAddAll_ISE(false); } 818f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testAddAll_ISE_fair() { testAddAll_ISE(true); } 828f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testAddAll_ISE(boolean fair) { 838f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle SynchronousQueue q = new SynchronousQueue(fair); 848f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Integer[] ints = new Integer[1]; 858f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle for (int i = 0; i < ints.length; i++) 868f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle ints[i] = i; 878f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Collection<Integer> coll = Arrays.asList(ints); 888f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 898f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.addAll(coll); 908f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 918f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (IllegalStateException success) {} 928f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 938f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 948f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 958f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * put blocks interruptibly if no active taker 968f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 978f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testBlockingPut() { testBlockingPut(false); } 988f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testBlockingPut_fair() { testBlockingPut(true); } 998f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testBlockingPut(boolean fair) { 1008f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 1018f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final CountDownLatch pleaseInterrupt = new CountDownLatch(1); 1028f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread t = newStartedThread(new CheckedRunnable() { 1038f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 1048f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread.currentThread().interrupt(); 1058f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 1068f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.put(99); 1078f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 1088f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (InterruptedException success) {} 1098f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(Thread.interrupted()); 1108f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1118f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle pleaseInterrupt.countDown(); 1128f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 1138f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.put(99); 1148f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 1158f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (InterruptedException success) {} 1168f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(Thread.interrupted()); 1178f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 1188f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1198f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle await(pleaseInterrupt); 1208f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertThreadStaysAlive(t); 1218f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle t.interrupt(); 1228f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle awaitTermination(t); 1238f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, q.remainingCapacity()); 1248f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 1258f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1268f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 1278f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * put blocks interruptibly waiting for take 1288f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 1298f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPutWithTake() { testPutWithTake(false); } 1308f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPutWithTake_fair() { testPutWithTake(true); } 1318f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPutWithTake(boolean fair) { 1328f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 1338f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final CountDownLatch pleaseTake = new CountDownLatch(1); 1348f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final CountDownLatch pleaseInterrupt = new CountDownLatch(1); 1358f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread t = newStartedThread(new CheckedRunnable() { 1368f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 1378f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle pleaseTake.countDown(); 1388f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.put(one); 1398f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1408f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle pleaseInterrupt.countDown(); 1418f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 1428f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.put(99); 1438f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 1448f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (InterruptedException success) {} 1458f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(Thread.interrupted()); 1468f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 1478f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1488f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle await(pleaseTake); 1498f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, q.remainingCapacity()); 1508f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { assertSame(one, q.take()); } 1518f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle catch (InterruptedException e) { threadUnexpectedException(e); } 1528f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1538f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle await(pleaseInterrupt); 1548f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertThreadStaysAlive(t); 1558f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle t.interrupt(); 1568f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle awaitTermination(t); 1578f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, q.remainingCapacity()); 1588f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 1598f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1608f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 1618f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * timed offer times out if elements not taken 1628f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 1638f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedOffer() { testTimedOffer(false); } 1648f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedOffer_fair() { testTimedOffer(true); } 1658f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedOffer(boolean fair) { 1668f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 1678f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final CountDownLatch pleaseInterrupt = new CountDownLatch(1); 1688f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread t = newStartedThread(new CheckedRunnable() { 1698f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 1708f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle long startTime = System.nanoTime(); 1718f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); 1728f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); 1738f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle pleaseInterrupt.countDown(); 1748f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 1758f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); 1768f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 1778f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (InterruptedException success) {} 1788f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 1798f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1808f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle await(pleaseInterrupt); 1818f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertThreadStaysAlive(t); 1828f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle t.interrupt(); 1838f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle awaitTermination(t); 1848f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 1858f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1868f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 1878f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * poll return null if no active putter 1888f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 1898f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPoll() { testPoll(false); } 1908f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPoll_fair() { testPoll(true); } 1918f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPoll(boolean fair) { 1928f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 1938f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertNull(q.poll()); 1948f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 1958f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 1968f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 1978f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * timed poll with zero timeout times out if no active putter 1988f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 1998f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedPoll0() { testTimedPoll0(false); } 2008f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedPoll0_fair() { testTimedPoll0(true); } 2018f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedPoll0(boolean fair) { 2028f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 2038f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { assertNull(q.poll(0, MILLISECONDS)); } 2048f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle catch (InterruptedException e) { threadUnexpectedException(e); } 2058f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 2068f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2078f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 2088f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * timed poll with nonzero timeout times out if no active putter 2098f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 2108f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedPoll() { testTimedPoll(false); } 2118f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedPoll_fair() { testTimedPoll(true); } 2128f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedPoll(boolean fair) { 2138f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 2148f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle long startTime = System.nanoTime(); 2158f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { assertNull(q.poll(timeoutMillis(), MILLISECONDS)); } 2168f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle catch (InterruptedException e) { threadUnexpectedException(e); } 2178f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); 2188f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 2198f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2208f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 2218f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * timed poll before a delayed offer times out, returning null; 2228f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * after offer succeeds; on interruption throws 2238f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 2248f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedPollWithOffer() { testTimedPollWithOffer(false); } 2258f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedPollWithOffer_fair() { testTimedPollWithOffer(true); } 2268f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testTimedPollWithOffer(boolean fair) { 2278f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 2288f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final CountDownLatch pleaseOffer = new CountDownLatch(1); 2298f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final CountDownLatch pleaseInterrupt = new CountDownLatch(1); 2308f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread t = newStartedThread(new CheckedRunnable() { 2318f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 2328f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle long startTime = System.nanoTime(); 2338f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertNull(q.poll(timeoutMillis(), MILLISECONDS)); 2348f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); 2358f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2368f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle pleaseOffer.countDown(); 2378f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle startTime = System.nanoTime(); 2388f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); 2398f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS); 2408f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2418f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread.currentThread().interrupt(); 2428f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 2438f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.poll(LONG_DELAY_MS, MILLISECONDS); 2448f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 2458f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (InterruptedException success) {} 2468f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(Thread.interrupted()); 2478f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2488f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle pleaseInterrupt.countDown(); 2498f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 2508f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.poll(LONG_DELAY_MS, MILLISECONDS); 2518f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 2528f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (InterruptedException success) {} 2538f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(Thread.interrupted()); 2548f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 2558f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2568f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle await(pleaseOffer); 2578f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle long startTime = System.nanoTime(); 2588f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); } 2598f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle catch (InterruptedException e) { threadUnexpectedException(e); } 2608f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS); 2618f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2628f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle await(pleaseInterrupt); 2638f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertThreadStaysAlive(t); 2648f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle t.interrupt(); 2658f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle awaitTermination(t); 2668f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 2678f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2688f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 2698f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * peek() returns null if no active putter 2708f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 2718f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPeek() { testPeek(false); } 2728f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPeek_fair() { testPeek(true); } 2738f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPeek(boolean fair) { 2748f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 2758f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertNull(q.peek()); 2768f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 2778f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2788f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 2798f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * element() throws NoSuchElementException if no active putter 2808f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 2818f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testElement() { testElement(false); } 2828f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testElement_fair() { testElement(true); } 2838f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testElement(boolean fair) { 2848f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 2858f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 2868f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.element(); 2878f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 2888f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (NoSuchElementException success) {} 2898f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 2908f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 2918f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 2928f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * remove() throws NoSuchElementException if no active putter 2938f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 2948f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testRemove() { testRemove(false); } 2958f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testRemove_fair() { testRemove(true); } 2968f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testRemove(boolean fair) { 2978f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 2988f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 2998f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.remove(); 3008f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 3018f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (NoSuchElementException success) {} 3028f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 3038f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3048f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 3058f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * contains returns false 3068f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 3078f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testContains() { testContains(false); } 3088f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testContains_fair() { testContains(true); } 3098f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testContains(boolean fair) { 3108f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 3118f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.contains(zero)); 3128f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 3138f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3148f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 3158f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * clear ensures isEmpty 3168f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 3178f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testClear() { testClear(false); } 3188f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testClear_fair() { testClear(true); } 3198f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testClear(boolean fair) { 3208f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 3218f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.clear(); 3228f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(q.isEmpty()); 3238f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 3248f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3258f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 3268f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * containsAll returns false unless empty 3278f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 3288f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testContainsAll() { testContainsAll(false); } 3298f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testContainsAll_fair() { testContainsAll(true); } 3308f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testContainsAll(boolean fair) { 3318f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 3328f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Integer[] empty = new Integer[0]; 3338f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(q.containsAll(Arrays.asList(empty))); 3348f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Integer[] ints = new Integer[1]; ints[0] = zero; 3358f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.containsAll(Arrays.asList(ints))); 3368f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 3378f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3388f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 3398f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * retainAll returns false 3408f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 3418f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testRetainAll() { testRetainAll(false); } 3428f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testRetainAll_fair() { testRetainAll(true); } 3438f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testRetainAll(boolean fair) { 3448f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 3458f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Integer[] empty = new Integer[0]; 3468f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.retainAll(Arrays.asList(empty))); 3478f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Integer[] ints = new Integer[1]; ints[0] = zero; 3488f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.retainAll(Arrays.asList(ints))); 3498f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 3508f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3518f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 3528f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * removeAll returns false 3538f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 3548f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testRemoveAll() { testRemoveAll(false); } 3558f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testRemoveAll_fair() { testRemoveAll(true); } 3568f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testRemoveAll(boolean fair) { 3578f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 3588f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Integer[] empty = new Integer[0]; 3598f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.removeAll(Arrays.asList(empty))); 3608f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Integer[] ints = new Integer[1]; ints[0] = zero; 3618f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.containsAll(Arrays.asList(ints))); 3628f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 3638f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3648f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 3658f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * toArray is empty 3668f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 3678f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToArray() { testToArray(false); } 3688f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToArray_fair() { testToArray(true); } 3698f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToArray(boolean fair) { 3708f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 3718f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Object[] o = q.toArray(); 3728f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, o.length); 3738f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 3748f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3758f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 3768f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * toArray(Integer array) returns its argument with the first 3778f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * element (if present) nulled out 3788f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 3798f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToArray2() { testToArray2(false); } 3808f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToArray2_fair() { testToArray2(true); } 3818f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToArray2(boolean fair) { 3828f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue<Integer> q 3838f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle = new SynchronousQueue<Integer>(fair); 3848f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Integer[] a; 3858f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3868f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle a = new Integer[0]; 3878f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertSame(a, q.toArray(a)); 3888f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3898f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle a = new Integer[3]; 3908f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Arrays.fill(a, 42); 3918f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertSame(a, q.toArray(a)); 3928f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertNull(a[0]); 3938f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle for (int i = 1; i < a.length; i++) 3948f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(42, (int) a[i]); 3958f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 3968f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 3978f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 3988f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * toArray(null) throws NPE 3998f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 4008f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToArray_null() { testToArray_null(false); } 4018f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToArray_null_fair() { testToArray_null(true); } 4028f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToArray_null(boolean fair) { 4038f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 4048f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 4058f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Object o[] = q.toArray(null); 4068f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 4078f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (NullPointerException success) {} 4088f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 4098f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 4108f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 4118f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * iterator does not traverse any elements 4128f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 4138f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testIterator() { testIterator(false); } 4148f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testIterator_fair() { testIterator(true); } 4158f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testIterator(boolean fair) { 4168f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 4178f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Iterator it = q.iterator(); 4188f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(it.hasNext()); 4198f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 4208f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Object x = it.next(); 4218f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 4228f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (NoSuchElementException success) {} 4238f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 4248f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 4258f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 4268f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * iterator remove throws ISE 4278f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 4288f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testIteratorRemove() { testIteratorRemove(false); } 4298f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testIteratorRemove_fair() { testIteratorRemove(true); } 4308f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testIteratorRemove(boolean fair) { 4318f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 4328f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Iterator it = q.iterator(); 4338f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle try { 4348f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle it.remove(); 4358f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle shouldThrow(); 4368f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } catch (IllegalStateException success) {} 4378f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 4388f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 4398f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 4408f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * toString returns a non-null string 4418f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 4428f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToString() { testToString(false); } 4438f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToString_fair() { testToString(true); } 4448f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testToString(boolean fair) { 4458f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 4468f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle String s = q.toString(); 4478f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertNotNull(s); 4488f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 4498f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 4508f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 4518f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * offer transfers elements across Executor tasks 4528f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 4538f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testOfferInExecutor() { testOfferInExecutor(false); } 4548f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testOfferInExecutor_fair() { testOfferInExecutor(true); } 4558f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testOfferInExecutor(boolean fair) { 4568f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 4578f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle ExecutorService executor = Executors.newFixedThreadPool(2); 4588f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final CheckedBarrier threadsStarted = new CheckedBarrier(2); 4598f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 4608f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle executor.execute(new CheckedRunnable() { 4618f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 4628f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(q.offer(one)); 4638f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle threadsStarted.await(); 4648f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); 4658f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, q.remainingCapacity()); 4668f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 4678f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 4688f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle executor.execute(new CheckedRunnable() { 4698f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 4708f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle threadsStarted.await(); 4718f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertSame(one, q.take()); 4728f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 4738f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 4748f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle joinPool(executor); 4758f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 4768f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 4778f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 4788f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * timed poll retrieves elements across Executor threads 4798f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 4808f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPollInExecutor() { testPollInExecutor(false); } 4818f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPollInExecutor_fair() { testPollInExecutor(true); } 4828f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testPollInExecutor(boolean fair) { 4838f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 4848f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final CheckedBarrier threadsStarted = new CheckedBarrier(2); 4858f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle ExecutorService executor = Executors.newFixedThreadPool(2); 4868f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle executor.execute(new CheckedRunnable() { 4878f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 4888f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertNull(q.poll()); 4898f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle threadsStarted.await(); 4908f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); 4918f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(q.isEmpty()); 4928f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 4938f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 4948f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle executor.execute(new CheckedRunnable() { 4958f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 4968f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle threadsStarted.await(); 4978f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.put(one); 4988f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 4998f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 5008f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle joinPool(executor); 5018f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 5028f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 5038f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 5048f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * a deserialized serialized queue is usable 5058f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 5068f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testSerialization() { 5078f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue x = new SynchronousQueue(); 5088f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue y = new SynchronousQueue(false); 5098f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue z = new SynchronousQueue(true); 5108f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertSerialEquals(x, y); 5118f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertNotSerialEquals(x, z); 5128f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle SynchronousQueue[] qs = { x, y, z }; 5138f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle for (SynchronousQueue q : qs) { 5148f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle SynchronousQueue clone = serialClone(q); 5158f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertNotSame(q, clone); 5168f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertSerialEquals(q, clone); 5178f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(clone.isEmpty()); 5188f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, clone.size()); 5198f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, clone.remainingCapacity()); 5208f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertFalse(clone.offer(zero)); 5218f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 5228f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 5238f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 5248f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 5258f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * drainTo(c) of empty queue doesn't transfer elements 5268f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 5278f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testDrainTo() { testDrainTo(false); } 5288f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testDrainTo_fair() { testDrainTo(true); } 5298f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testDrainTo(boolean fair) { 5308f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 5318f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle ArrayList l = new ArrayList(); 5328f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.drainTo(l); 5338f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, q.size()); 5348f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(0, l.size()); 5358f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 5368f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 5378f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 5388f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * drainTo empties queue, unblocking a waiting put. 5398f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 5408f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testDrainToWithActivePut() { testDrainToWithActivePut(false); } 5418f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testDrainToWithActivePut_fair() { testDrainToWithActivePut(true); } 5428f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testDrainToWithActivePut(boolean fair) { 5438f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(fair); 5448f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread t = newStartedThread(new CheckedRunnable() { 5458f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 5468f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.put(one); 5478f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 5488f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 5498f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle ArrayList l = new ArrayList(); 5508f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle long startTime = System.nanoTime(); 5518f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle while (l.isEmpty()) { 5528f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.drainTo(l); 5538f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle if (millisElapsedSince(startTime) > LONG_DELAY_MS) 5548f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle fail("timed out"); 5558f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread.yield(); 5568f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 5578f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(l.size() == 1); 5588f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertSame(one, l.get(0)); 5598f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle awaitTermination(t); 5608f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 5618f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 5628f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle /** 5638f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle * drainTo(c, n) empties up to n elements of queue into c 5648f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle */ 5658f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void testDrainToN() throws InterruptedException { 5668f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle final SynchronousQueue q = new SynchronousQueue(); 5678f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread t1 = newStartedThread(new CheckedRunnable() { 5688f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 5698f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.put(one); 5708f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 5718f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 5728f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle Thread t2 = newStartedThread(new CheckedRunnable() { 5738f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle public void realRun() throws InterruptedException { 5748f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.put(two); 5758f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle }}); 5768f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 5778f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle ArrayList l = new ArrayList(); 5788f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle delay(SHORT_DELAY_MS); 5798f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.drainTo(l, 1); 5808f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(1, l.size()); 5818f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle q.drainTo(l, 1); 5828f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertEquals(2, l.size()); 5838f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(l.contains(one)); 5848f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle assertTrue(l.contains(two)); 5858f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle awaitTermination(t1); 5868f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle awaitTermination(t2); 5878f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle } 5888f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle 5898f0d92bba199d906c70a5e40d7f3516c1a424117Calin Juravle} 590