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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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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/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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|
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.io.*; |
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|
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public class SynchronousQueueTest extends TestCase { |
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|
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private final static int N = 1; |
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private static long SHORT_DELAY_MS = 100; |
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private static long MEDIUM_DELAY_MS = 1000; |
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private static long LONG_DELAY_MS = 10000; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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} |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.concurrent.BlockingQueue; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.SynchronousQueue; |
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import java.util.concurrent.ThreadLocalRandom; |
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|
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public static Test suite() { |
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return new TestSuite(SynchronousQueueTest.class); |
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} |
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import junit.framework.Test; |
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|
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public void testEmptyFull() { |
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SynchronousQueue q = new SynchronousQueue(); |
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assertTrue(q.isEmpty()); |
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assertEquals(0, q.size()); |
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assertEquals(0, q.remainingCapacity()); |
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assertFalse(q.offer(new Integer(3))); |
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} |
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public class SynchronousQueueTest extends JSR166TestCase { |
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|
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public void testOfferNull(){ |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.offer(null); |
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fail("should throw NPE"); |
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} catch (NullPointerException success) { } |
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public static class Fair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new SynchronousQueue(true); |
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} |
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} |
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|
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public void testOffer(){ |
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SynchronousQueue q = new SynchronousQueue(); |
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assertFalse(q.offer(new Integer(1))); |
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public static class NonFair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new SynchronousQueue(false); |
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} |
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} |
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|
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public void testAdd(){ |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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assertEquals(0, q.remainingCapacity()); |
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q.add(new Integer(0)); |
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} catch (IllegalStateException success){ |
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} |
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public static void main(String[] args) { |
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main(suite(), args); |
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} |
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|
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public void testAddAll1(){ |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.addAll(null); |
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fail("Cannot add null collection"); |
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} |
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catch (NullPointerException success) {} |
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} |
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public void testAddAll2(){ |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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Integer[] ints = new Integer[N]; |
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q.addAll(Arrays.asList(ints)); |
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fail("Cannot add null elements"); |
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} |
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catch (NullPointerException success) {} |
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} |
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public void testAddAll4(){ |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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Integer[] ints = new Integer[N]; |
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for (int i = 0; i < N; ++i) |
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ints[i] = new Integer(i); |
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q.addAll(Arrays.asList(ints)); |
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fail("Cannot add with insufficient capacity"); |
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} |
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catch (IllegalStateException success) {} |
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public static Test suite() { |
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return newTestSuite(SynchronousQueueTest.class, |
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new Fair().testSuite(), |
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new NonFair().testSuite()); |
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} |
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|
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public void testPutNull() { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.put(null); |
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fail("put should throw NPE"); |
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} |
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catch (NullPointerException success){ |
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} |
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catch (InterruptedException ie) { |
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fail("Unexpected exception"); |
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} |
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} |
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|
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public void testBlockingPut(){ |
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Thread t = new Thread(new Runnable() { |
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public void run() { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.put(new Integer(0)); |
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fail("put should block"); |
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} catch (InterruptedException ie){ |
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} |
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}}); |
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t.start(); |
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try { |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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t.join(); |
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} |
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catch (InterruptedException ie) { |
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fail("Unexpected exception"); |
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} |
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/** |
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* Any SynchronousQueue is both empty and full |
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*/ |
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public void testEmptyFull() { testEmptyFull(false); } |
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public void testEmptyFull_fair() { testEmptyFull(true); } |
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public void testEmptyFull(boolean fair) { |
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final SynchronousQueue q = new SynchronousQueue(fair); |
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assertTrue(q.isEmpty()); |
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assertEquals(0, q.size()); |
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assertEquals(0, q.remainingCapacity()); |
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assertFalse(q.offer(zero)); |
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} |
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|
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public void testPutWithTake() { |
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final SynchronousQueue q = new SynchronousQueue(); |
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Thread t = new Thread(new Runnable() { |
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public void run(){ |
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int added = 0; |
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try { |
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q.put(new Object()); |
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++added; |
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q.put(new Object()); |
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++added; |
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q.put(new Object()); |
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++added; |
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q.put(new Object()); |
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++added; |
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fail("Should block"); |
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} catch (InterruptedException e){ |
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assertTrue(added >= 1); |
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} |
139 |
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} |
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}); |
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/** |
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* offer fails if no active taker |
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*/ |
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public void testOffer() { testOffer(false); } |
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public void testOffer_fair() { testOffer(true); } |
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public void testOffer(boolean fair) { |
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SynchronousQueue q = new SynchronousQueue(fair); |
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assertFalse(q.offer(one)); |
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} |
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|
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/** |
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* add throws IllegalStateException if no active taker |
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*/ |
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public void testAdd() { testAdd(false); } |
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public void testAdd_fair() { testAdd(true); } |
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public void testAdd(boolean fair) { |
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SynchronousQueue q = new SynchronousQueue(fair); |
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assertEquals(0, q.remainingCapacity()); |
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|
try { |
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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q.take(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
86 |
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t.join(); |
87 |
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} catch (Exception e){ |
88 |
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fail("Unexpected exception"); |
89 |
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} |
90 |
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} |
81 |
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q.add(one); |
82 |
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shouldThrow(); |
83 |
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} catch (IllegalStateException success) {} |
84 |
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} |
85 |
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|
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/** |
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* addAll(this) throws IllegalArgumentException |
88 |
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*/ |
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public void testAddAll_self() { testAddAll_self(false); } |
90 |
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public void testAddAll_self_fair() { testAddAll_self(true); } |
91 |
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public void testAddAll_self(boolean fair) { |
92 |
> |
SynchronousQueue q = new SynchronousQueue(fair); |
93 |
> |
try { |
94 |
> |
q.addAll(q); |
95 |
> |
shouldThrow(); |
96 |
> |
} catch (IllegalArgumentException success) {} |
97 |
> |
} |
98 |
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|
99 |
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/** |
100 |
> |
* addAll throws IllegalStateException if no active taker |
101 |
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*/ |
102 |
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public void testAddAll_ISE() { testAddAll_ISE(false); } |
103 |
> |
public void testAddAll_ISE_fair() { testAddAll_ISE(true); } |
104 |
> |
public void testAddAll_ISE(boolean fair) { |
105 |
> |
SynchronousQueue q = new SynchronousQueue(fair); |
106 |
> |
Integer[] ints = new Integer[1]; |
107 |
> |
for (int i = 0; i < ints.length; i++) |
108 |
> |
ints[i] = i; |
109 |
> |
Collection<Integer> coll = Arrays.asList(ints); |
110 |
> |
try { |
111 |
> |
q.addAll(coll); |
112 |
> |
shouldThrow(); |
113 |
> |
} catch (IllegalStateException success) {} |
114 |
> |
} |
115 |
> |
|
116 |
> |
/** |
117 |
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* put blocks interruptibly if no active taker |
118 |
> |
*/ |
119 |
> |
public void testBlockingPut() { testBlockingPut(false); } |
120 |
> |
public void testBlockingPut_fair() { testBlockingPut(true); } |
121 |
> |
public void testBlockingPut(boolean fair) { |
122 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
123 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
124 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
125 |
> |
public void realRun() throws InterruptedException { |
126 |
> |
Thread.currentThread().interrupt(); |
127 |
> |
try { |
128 |
> |
q.put(99); |
129 |
> |
shouldThrow(); |
130 |
> |
} catch (InterruptedException success) {} |
131 |
> |
assertFalse(Thread.interrupted()); |
132 |
|
|
133 |
< |
public void testTimedOffer() { |
134 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
135 |
< |
Thread t = new Thread(new Runnable() { |
136 |
< |
public void run(){ |
137 |
< |
try { |
138 |
< |
|
139 |
< |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS)); |
140 |
< |
q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
141 |
< |
fail("Should block"); |
142 |
< |
} catch (InterruptedException success){} |
143 |
< |
} |
144 |
< |
}); |
145 |
< |
|
166 |
< |
try { |
167 |
< |
t.start(); |
168 |
< |
Thread.sleep(SHORT_DELAY_MS); |
169 |
< |
t.interrupt(); |
170 |
< |
t.join(); |
171 |
< |
} catch (Exception e){ |
172 |
< |
fail("Unexpected exception"); |
173 |
< |
} |
133 |
> |
pleaseInterrupt.countDown(); |
134 |
> |
try { |
135 |
> |
q.put(99); |
136 |
> |
shouldThrow(); |
137 |
> |
} catch (InterruptedException success) {} |
138 |
> |
assertFalse(Thread.interrupted()); |
139 |
> |
}}); |
140 |
> |
|
141 |
> |
await(pleaseInterrupt); |
142 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
143 |
> |
t.interrupt(); |
144 |
> |
awaitTermination(t); |
145 |
> |
assertEquals(0, q.remainingCapacity()); |
146 |
|
} |
147 |
|
|
148 |
+ |
/** |
149 |
+ |
* put blocks interruptibly waiting for take |
150 |
+ |
*/ |
151 |
+ |
public void testPutWithTake() { testPutWithTake(false); } |
152 |
+ |
public void testPutWithTake_fair() { testPutWithTake(true); } |
153 |
+ |
public void testPutWithTake(boolean fair) { |
154 |
+ |
final SynchronousQueue q = new SynchronousQueue(fair); |
155 |
+ |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
156 |
+ |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
157 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
158 |
+ |
public void realRun() throws InterruptedException { |
159 |
+ |
pleaseTake.countDown(); |
160 |
+ |
q.put(one); |
161 |
|
|
162 |
< |
public void testTakeFromEmpty() { |
163 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
164 |
< |
Thread t = new Thread(new Runnable() { |
165 |
< |
public void run(){ |
166 |
< |
try { |
167 |
< |
q.take(); |
183 |
< |
fail("Should block"); |
184 |
< |
} catch (InterruptedException success){ } |
185 |
< |
} |
186 |
< |
}); |
187 |
< |
try { |
188 |
< |
t.start(); |
189 |
< |
Thread.sleep(SHORT_DELAY_MS); |
190 |
< |
t.interrupt(); |
191 |
< |
t.join(); |
192 |
< |
} catch (Exception e){ |
193 |
< |
fail("Unexpected exception"); |
194 |
< |
} |
195 |
< |
} |
162 |
> |
Thread.currentThread().interrupt(); |
163 |
> |
try { |
164 |
> |
q.put(99); |
165 |
> |
shouldThrow(); |
166 |
> |
} catch (InterruptedException success) {} |
167 |
> |
assertFalse(Thread.interrupted()); |
168 |
|
|
169 |
< |
public void testPoll(){ |
170 |
< |
SynchronousQueue q = new SynchronousQueue(); |
171 |
< |
assertNull(q.poll()); |
172 |
< |
} |
169 |
> |
pleaseInterrupt.countDown(); |
170 |
> |
try { |
171 |
> |
q.put(99); |
172 |
> |
shouldThrow(); |
173 |
> |
} catch (InterruptedException success) {} |
174 |
> |
assertFalse(Thread.interrupted()); |
175 |
> |
}}); |
176 |
|
|
177 |
< |
public void testTimedPoll0() { |
178 |
< |
try { |
179 |
< |
SynchronousQueue q = new SynchronousQueue(); |
180 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
206 |
< |
} catch (InterruptedException e){ |
207 |
< |
fail("Unexpected exception"); |
208 |
< |
} |
209 |
< |
} |
177 |
> |
await(pleaseTake); |
178 |
> |
assertEquals(0, q.remainingCapacity()); |
179 |
> |
try { assertSame(one, q.take()); } |
180 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
181 |
|
|
182 |
< |
public void testTimedPoll() { |
183 |
< |
try { |
184 |
< |
SynchronousQueue q = new SynchronousQueue(); |
185 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
186 |
< |
} catch (InterruptedException e){ |
216 |
< |
fail("Unexpected exception"); |
217 |
< |
} |
182 |
> |
await(pleaseInterrupt); |
183 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
184 |
> |
t.interrupt(); |
185 |
> |
awaitTermination(t); |
186 |
> |
assertEquals(0, q.remainingCapacity()); |
187 |
|
} |
188 |
|
|
189 |
< |
public void testInterruptedTimedPoll(){ |
190 |
< |
Thread t = new Thread(new Runnable() { |
191 |
< |
public void run() { |
192 |
< |
try { |
193 |
< |
SynchronousQueue q = new SynchronousQueue(); |
194 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
195 |
< |
} catch (InterruptedException success){ |
196 |
< |
} |
197 |
< |
}}); |
198 |
< |
t.start(); |
230 |
< |
try { |
231 |
< |
Thread.sleep(SHORT_DELAY_MS); |
232 |
< |
t.interrupt(); |
233 |
< |
t.join(); |
234 |
< |
} |
235 |
< |
catch (InterruptedException ie) { |
236 |
< |
fail("Unexpected exception"); |
237 |
< |
} |
238 |
< |
} |
189 |
> |
/** |
190 |
> |
* timed offer times out if elements not taken |
191 |
> |
*/ |
192 |
> |
public void testTimedOffer() { |
193 |
> |
final boolean fair = ThreadLocalRandom.current().nextBoolean(); |
194 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
195 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
196 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
197 |
> |
public void realRun() throws InterruptedException { |
198 |
> |
long startTime = System.nanoTime(); |
199 |
|
|
200 |
< |
public void testTimedPollWithOffer(){ |
201 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
242 |
< |
Thread t = new Thread(new Runnable() { |
243 |
< |
public void run(){ |
244 |
< |
try { |
245 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
246 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
247 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
248 |
< |
fail("Should block"); |
249 |
< |
} catch (InterruptedException success) { } |
250 |
< |
} |
251 |
< |
}); |
252 |
< |
try { |
253 |
< |
t.start(); |
254 |
< |
Thread.sleep(SHORT_DELAY_MS * 2); |
255 |
< |
assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
256 |
< |
t.interrupt(); |
257 |
< |
t.join(); |
258 |
< |
} catch (Exception e){ |
259 |
< |
fail("Unexpected exception"); |
260 |
< |
} |
261 |
< |
} |
200 |
> |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
201 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
202 |
|
|
203 |
+ |
Thread.currentThread().interrupt(); |
204 |
+ |
try { |
205 |
+ |
q.offer(new Object(), randomTimeout(), randomTimeUnit()); |
206 |
+ |
shouldThrow(); |
207 |
+ |
} catch (InterruptedException success) {} |
208 |
+ |
assertFalse(Thread.interrupted()); |
209 |
|
|
210 |
< |
public void testPeek(){ |
211 |
< |
SynchronousQueue q = new SynchronousQueue(); |
212 |
< |
assertNull(q.peek()); |
213 |
< |
} |
210 |
> |
pleaseInterrupt.countDown(); |
211 |
> |
try { |
212 |
> |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
213 |
> |
shouldThrow(); |
214 |
> |
} catch (InterruptedException success) {} |
215 |
> |
assertFalse(Thread.interrupted()); |
216 |
> |
|
217 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
218 |
> |
}}); |
219 |
> |
|
220 |
> |
await(pleaseInterrupt); |
221 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
222 |
> |
t.interrupt(); |
223 |
> |
awaitTermination(t); |
224 |
> |
} |
225 |
> |
|
226 |
> |
/** |
227 |
> |
* poll return null if no active putter |
228 |
> |
*/ |
229 |
> |
public void testPoll() { testPoll(false); } |
230 |
> |
public void testPoll_fair() { testPoll(true); } |
231 |
> |
public void testPoll(boolean fair) { |
232 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
233 |
> |
assertNull(q.poll()); |
234 |
> |
} |
235 |
> |
|
236 |
> |
/** |
237 |
> |
* timed poll with zero timeout times out if no active putter |
238 |
> |
*/ |
239 |
> |
public void testTimedPoll0() { testTimedPoll0(false); } |
240 |
> |
public void testTimedPoll0_fair() { testTimedPoll0(true); } |
241 |
> |
public void testTimedPoll0(boolean fair) { |
242 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
243 |
> |
try { assertNull(q.poll(0, MILLISECONDS)); } |
244 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
245 |
> |
} |
246 |
> |
|
247 |
> |
/** |
248 |
> |
* timed poll with nonzero timeout times out if no active putter |
249 |
> |
*/ |
250 |
> |
public void testTimedPoll() { |
251 |
> |
final boolean fair = ThreadLocalRandom.current().nextBoolean(); |
252 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
253 |
> |
final long startTime = System.nanoTime(); |
254 |
> |
try { assertNull(q.poll(timeoutMillis(), MILLISECONDS)); } |
255 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
256 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
257 |
> |
} |
258 |
> |
|
259 |
> |
/** |
260 |
> |
* timed poll before a delayed offer times out, returning null; |
261 |
> |
* after offer succeeds; on interruption throws |
262 |
> |
*/ |
263 |
> |
public void testTimedPollWithOffer() { |
264 |
> |
final boolean fair = ThreadLocalRandom.current().nextBoolean(); |
265 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
266 |
> |
final CountDownLatch pleaseOffer = new CountDownLatch(1); |
267 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
268 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
269 |
> |
public void realRun() throws InterruptedException { |
270 |
> |
long startTime = System.nanoTime(); |
271 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
272 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
273 |
> |
|
274 |
> |
pleaseOffer.countDown(); |
275 |
> |
startTime = System.nanoTime(); |
276 |
> |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
277 |
|
|
278 |
< |
public void testElement(){ |
279 |
< |
SynchronousQueue q = new SynchronousQueue(); |
278 |
> |
Thread.currentThread().interrupt(); |
279 |
> |
try { |
280 |
> |
q.poll(randomTimeout(), randomTimeUnit()); |
281 |
> |
shouldThrow(); |
282 |
> |
} catch (InterruptedException success) {} |
283 |
> |
assertFalse(Thread.interrupted()); |
284 |
> |
|
285 |
> |
pleaseInterrupt.countDown(); |
286 |
> |
try { |
287 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
288 |
> |
shouldThrow(); |
289 |
> |
} catch (InterruptedException success) {} |
290 |
> |
assertFalse(Thread.interrupted()); |
291 |
> |
|
292 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
293 |
> |
}}); |
294 |
> |
|
295 |
> |
await(pleaseOffer); |
296 |
> |
long startTime = System.nanoTime(); |
297 |
> |
try { assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); } |
298 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
299 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
300 |
> |
|
301 |
> |
await(pleaseInterrupt); |
302 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
303 |
> |
t.interrupt(); |
304 |
> |
awaitTermination(t); |
305 |
> |
} |
306 |
> |
|
307 |
> |
/** |
308 |
> |
* peek() returns null if no active putter |
309 |
> |
*/ |
310 |
> |
public void testPeek() { testPeek(false); } |
311 |
> |
public void testPeek_fair() { testPeek(true); } |
312 |
> |
public void testPeek(boolean fair) { |
313 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
314 |
> |
assertNull(q.peek()); |
315 |
> |
} |
316 |
> |
|
317 |
> |
/** |
318 |
> |
* element() throws NoSuchElementException if no active putter |
319 |
> |
*/ |
320 |
> |
public void testElement() { testElement(false); } |
321 |
> |
public void testElement_fair() { testElement(true); } |
322 |
> |
public void testElement(boolean fair) { |
323 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
324 |
|
try { |
325 |
|
q.element(); |
326 |
< |
fail("no such element"); |
327 |
< |
} |
275 |
< |
catch (NoSuchElementException success) {} |
326 |
> |
shouldThrow(); |
327 |
> |
} catch (NoSuchElementException success) {} |
328 |
|
} |
329 |
|
|
330 |
< |
public void testRemove(){ |
331 |
< |
SynchronousQueue q = new SynchronousQueue(); |
330 |
> |
/** |
331 |
> |
* remove() throws NoSuchElementException if no active putter |
332 |
> |
*/ |
333 |
> |
public void testRemove() { testRemove(false); } |
334 |
> |
public void testRemove_fair() { testRemove(true); } |
335 |
> |
public void testRemove(boolean fair) { |
336 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
337 |
|
try { |
338 |
|
q.remove(); |
339 |
< |
fail("remove should throw"); |
340 |
< |
} catch (NoSuchElementException success){ |
284 |
< |
} |
285 |
< |
} |
286 |
< |
|
287 |
< |
public void testRemoveElement(){ |
288 |
< |
SynchronousQueue q = new SynchronousQueue(); |
289 |
< |
for (int i = 1; i < N; i+=2) { |
290 |
< |
assertFalse(q.remove(new Integer(i))); |
291 |
< |
} |
292 |
< |
assertTrue(q.isEmpty()); |
293 |
< |
} |
294 |
< |
|
295 |
< |
public void testContains(){ |
296 |
< |
SynchronousQueue q = new SynchronousQueue(); |
297 |
< |
for (int i = 0; i < N; ++i) { |
298 |
< |
assertFalse(q.contains(new Integer(i))); |
299 |
< |
} |
339 |
> |
shouldThrow(); |
340 |
> |
} catch (NoSuchElementException success) {} |
341 |
|
} |
342 |
|
|
343 |
< |
public void testClear(){ |
344 |
< |
SynchronousQueue q = new SynchronousQueue(); |
343 |
> |
/** |
344 |
> |
* contains returns false |
345 |
> |
*/ |
346 |
> |
public void testContains() { testContains(false); } |
347 |
> |
public void testContains_fair() { testContains(true); } |
348 |
> |
public void testContains(boolean fair) { |
349 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
350 |
> |
assertFalse(q.contains(zero)); |
351 |
> |
} |
352 |
> |
|
353 |
> |
/** |
354 |
> |
* clear ensures isEmpty |
355 |
> |
*/ |
356 |
> |
public void testClear() { testClear(false); } |
357 |
> |
public void testClear_fair() { testClear(true); } |
358 |
> |
public void testClear(boolean fair) { |
359 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
360 |
|
q.clear(); |
361 |
|
assertTrue(q.isEmpty()); |
362 |
|
} |
363 |
|
|
364 |
< |
public void testContainsAll(){ |
365 |
< |
SynchronousQueue q = new SynchronousQueue(); |
364 |
> |
/** |
365 |
> |
* containsAll returns false unless empty |
366 |
> |
*/ |
367 |
> |
public void testContainsAll() { testContainsAll(false); } |
368 |
> |
public void testContainsAll_fair() { testContainsAll(true); } |
369 |
> |
public void testContainsAll(boolean fair) { |
370 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
371 |
|
Integer[] empty = new Integer[0]; |
372 |
< |
Integer[] ints = new Integer[1]; ints[0] = new Integer(0); |
373 |
< |
// assertTrue(q.containsAll(Arrays.asList(empty))); |
372 |
> |
assertTrue(q.containsAll(Arrays.asList(empty))); |
373 |
> |
Integer[] ints = new Integer[1]; ints[0] = zero; |
374 |
|
assertFalse(q.containsAll(Arrays.asList(ints))); |
375 |
|
} |
376 |
|
|
377 |
< |
public void testRetainAll(){ |
378 |
< |
SynchronousQueue q = new SynchronousQueue(); |
377 |
> |
/** |
378 |
> |
* retainAll returns false |
379 |
> |
*/ |
380 |
> |
public void testRetainAll() { testRetainAll(false); } |
381 |
> |
public void testRetainAll_fair() { testRetainAll(true); } |
382 |
> |
public void testRetainAll(boolean fair) { |
383 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
384 |
|
Integer[] empty = new Integer[0]; |
385 |
< |
Integer[] ints = new Integer[1]; ints[0] = new Integer(0); |
386 |
< |
q.retainAll(Arrays.asList(ints)); |
387 |
< |
// assertTrue(q.containsAll(Arrays.asList(empty))); |
322 |
< |
assertFalse(q.containsAll(Arrays.asList(ints))); |
385 |
> |
assertFalse(q.retainAll(Arrays.asList(empty))); |
386 |
> |
Integer[] ints = new Integer[1]; ints[0] = zero; |
387 |
> |
assertFalse(q.retainAll(Arrays.asList(ints))); |
388 |
|
} |
389 |
|
|
390 |
< |
public void testRemoveAll(){ |
391 |
< |
SynchronousQueue q = new SynchronousQueue(); |
390 |
> |
/** |
391 |
> |
* removeAll returns false |
392 |
> |
*/ |
393 |
> |
public void testRemoveAll() { testRemoveAll(false); } |
394 |
> |
public void testRemoveAll_fair() { testRemoveAll(true); } |
395 |
> |
public void testRemoveAll(boolean fair) { |
396 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
397 |
|
Integer[] empty = new Integer[0]; |
398 |
< |
Integer[] ints = new Integer[1]; ints[0] = new Integer(0); |
399 |
< |
q.removeAll(Arrays.asList(ints)); |
330 |
< |
// assertTrue(q.containsAll(Arrays.asList(empty))); |
398 |
> |
assertFalse(q.removeAll(Arrays.asList(empty))); |
399 |
> |
Integer[] ints = new Integer[1]; ints[0] = zero; |
400 |
|
assertFalse(q.containsAll(Arrays.asList(ints))); |
401 |
|
} |
402 |
|
|
403 |
< |
|
404 |
< |
public void testToArray(){ |
405 |
< |
SynchronousQueue q = new SynchronousQueue(); |
406 |
< |
Object[] o = q.toArray(); |
407 |
< |
assertEquals(o.length, 0); |
408 |
< |
} |
409 |
< |
|
410 |
< |
public void testToArray2(){ |
411 |
< |
SynchronousQueue q = new SynchronousQueue(); |
412 |
< |
Integer[] ints = new Integer[1]; |
413 |
< |
assertNull(ints[0]); |
414 |
< |
} |
415 |
< |
|
416 |
< |
public void testIterator(){ |
417 |
< |
SynchronousQueue q = new SynchronousQueue(); |
418 |
< |
Iterator it = q.iterator(); |
419 |
< |
assertFalse(it.hasNext()); |
420 |
< |
try { |
421 |
< |
Object x = it.next(); |
422 |
< |
fail("should throw"); |
423 |
< |
} |
424 |
< |
catch (NoSuchElementException success) {} |
425 |
< |
} |
426 |
< |
|
427 |
< |
public void testIteratorRemove(){ |
428 |
< |
SynchronousQueue q = new SynchronousQueue(); |
429 |
< |
Iterator it = q.iterator(); |
403 |
> |
/** |
404 |
> |
* toArray is empty |
405 |
> |
*/ |
406 |
> |
public void testToArray() { testToArray(false); } |
407 |
> |
public void testToArray_fair() { testToArray(true); } |
408 |
> |
public void testToArray(boolean fair) { |
409 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
410 |
> |
Object[] o = q.toArray(); |
411 |
> |
assertEquals(0, o.length); |
412 |
> |
} |
413 |
> |
|
414 |
> |
/** |
415 |
> |
* toArray(Integer array) returns its argument with the first |
416 |
> |
* element (if present) nulled out |
417 |
> |
*/ |
418 |
> |
public void testToArray2() { testToArray2(false); } |
419 |
> |
public void testToArray2_fair() { testToArray2(true); } |
420 |
> |
public void testToArray2(boolean fair) { |
421 |
> |
final SynchronousQueue<Integer> q = new SynchronousQueue<>(fair); |
422 |
> |
Integer[] a; |
423 |
> |
|
424 |
> |
a = new Integer[0]; |
425 |
> |
assertSame(a, q.toArray(a)); |
426 |
> |
|
427 |
> |
a = new Integer[3]; |
428 |
> |
Arrays.fill(a, 42); |
429 |
> |
assertSame(a, q.toArray(a)); |
430 |
> |
assertNull(a[0]); |
431 |
> |
for (int i = 1; i < a.length; i++) |
432 |
> |
assertEquals(42, (int) a[i]); |
433 |
> |
} |
434 |
> |
|
435 |
> |
/** |
436 |
> |
* toArray(null) throws NPE |
437 |
> |
*/ |
438 |
> |
public void testToArray_null() { testToArray_null(false); } |
439 |
> |
public void testToArray_null_fair() { testToArray_null(true); } |
440 |
> |
public void testToArray_null(boolean fair) { |
441 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
442 |
> |
try { |
443 |
> |
Object[] o = q.toArray((Object[])null); |
444 |
> |
shouldThrow(); |
445 |
> |
} catch (NullPointerException success) {} |
446 |
> |
} |
447 |
> |
|
448 |
> |
/** |
449 |
> |
* iterator does not traverse any elements |
450 |
> |
*/ |
451 |
> |
public void testIterator() { testIterator(false); } |
452 |
> |
public void testIterator_fair() { testIterator(true); } |
453 |
> |
public void testIterator(boolean fair) { |
454 |
> |
assertIteratorExhausted(new SynchronousQueue(fair).iterator()); |
455 |
> |
} |
456 |
> |
|
457 |
> |
/** |
458 |
> |
* iterator remove throws IllegalStateException |
459 |
> |
*/ |
460 |
> |
public void testIteratorRemove() { testIteratorRemove(false); } |
461 |
> |
public void testIteratorRemove_fair() { testIteratorRemove(true); } |
462 |
> |
public void testIteratorRemove(boolean fair) { |
463 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
464 |
> |
Iterator it = q.iterator(); |
465 |
|
try { |
466 |
|
it.remove(); |
467 |
< |
fail("should throw"); |
468 |
< |
} |
365 |
< |
catch (IllegalStateException success) {} |
467 |
> |
shouldThrow(); |
468 |
> |
} catch (IllegalStateException success) {} |
469 |
|
} |
470 |
|
|
471 |
< |
public void testToString(){ |
472 |
< |
SynchronousQueue q = new SynchronousQueue(); |
471 |
> |
/** |
472 |
> |
* toString returns a non-null string |
473 |
> |
*/ |
474 |
> |
public void testToString() { testToString(false); } |
475 |
> |
public void testToString_fair() { testToString(true); } |
476 |
> |
public void testToString(boolean fair) { |
477 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
478 |
|
String s = q.toString(); |
479 |
< |
assertTrue(s != null); |
480 |
< |
} |
373 |
< |
|
374 |
< |
|
375 |
< |
public void testOfferInExecutor() { |
376 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
377 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
378 |
< |
final Integer one = new Integer(1); |
479 |
> |
assertNotNull(s); |
480 |
> |
} |
481 |
|
|
482 |
< |
executor.execute(new Runnable() { |
483 |
< |
public void run() { |
484 |
< |
assertFalse(q.offer(one)); |
485 |
< |
try { |
486 |
< |
assertTrue(q.offer(one, MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS)); |
482 |
> |
/** |
483 |
> |
* offer transfers elements across Executor tasks |
484 |
> |
*/ |
485 |
> |
public void testOfferInExecutor() { testOfferInExecutor(false); } |
486 |
> |
public void testOfferInExecutor_fair() { testOfferInExecutor(true); } |
487 |
> |
public void testOfferInExecutor(boolean fair) { |
488 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
489 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
490 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
491 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
492 |
> |
|
493 |
> |
executor.execute(new CheckedRunnable() { |
494 |
> |
public void realRun() throws InterruptedException { |
495 |
> |
assertFalse(q.offer(one)); |
496 |
> |
threadsStarted.await(); |
497 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
498 |
|
assertEquals(0, q.remainingCapacity()); |
499 |
< |
} |
387 |
< |
catch (InterruptedException e) { |
388 |
< |
fail("should not be interrupted"); |
389 |
< |
} |
390 |
< |
} |
391 |
< |
}); |
392 |
< |
|
393 |
< |
executor.execute(new Runnable() { |
394 |
< |
public void run() { |
395 |
< |
try { |
396 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
397 |
< |
assertEquals(one, q.take()); |
398 |
< |
} |
399 |
< |
catch (InterruptedException e) { |
400 |
< |
fail("should not be interrupted"); |
401 |
< |
} |
402 |
< |
} |
403 |
< |
}); |
404 |
< |
|
405 |
< |
executor.shutdown(); |
499 |
> |
}}); |
500 |
|
|
501 |
+ |
executor.execute(new CheckedRunnable() { |
502 |
+ |
public void realRun() throws InterruptedException { |
503 |
+ |
threadsStarted.await(); |
504 |
+ |
assertSame(one, q.take()); |
505 |
+ |
}}); |
506 |
+ |
} |
507 |
|
} |
508 |
|
|
509 |
< |
public void testPollInExecutor() { |
510 |
< |
|
511 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
512 |
< |
|
513 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
514 |
< |
|
515 |
< |
executor.execute(new Runnable() { |
516 |
< |
public void run() { |
517 |
< |
assertNull(q.poll()); |
518 |
< |
try { |
519 |
< |
assertTrue(null != q.poll(MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS)); |
509 |
> |
/** |
510 |
> |
* timed poll retrieves elements across Executor threads |
511 |
> |
*/ |
512 |
> |
public void testPollInExecutor() { testPollInExecutor(false); } |
513 |
> |
public void testPollInExecutor_fair() { testPollInExecutor(true); } |
514 |
> |
public void testPollInExecutor(boolean fair) { |
515 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
516 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
517 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
518 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
519 |
> |
executor.execute(new CheckedRunnable() { |
520 |
> |
public void realRun() throws InterruptedException { |
521 |
> |
assertNull(q.poll()); |
522 |
> |
threadsStarted.await(); |
523 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
524 |
|
assertTrue(q.isEmpty()); |
525 |
< |
} |
422 |
< |
catch (InterruptedException e) { |
423 |
< |
fail("should not be interrupted"); |
424 |
< |
} |
425 |
< |
} |
426 |
< |
}); |
427 |
< |
|
428 |
< |
executor.execute(new Runnable() { |
429 |
< |
public void run() { |
430 |
< |
try { |
431 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
432 |
< |
q.put(new Integer(1)); |
433 |
< |
} |
434 |
< |
catch (InterruptedException e) { |
435 |
< |
fail("should not be interrupted"); |
436 |
< |
} |
437 |
< |
} |
438 |
< |
}); |
439 |
< |
|
440 |
< |
executor.shutdown(); |
525 |
> |
}}); |
526 |
|
|
527 |
+ |
executor.execute(new CheckedRunnable() { |
528 |
+ |
public void realRun() throws InterruptedException { |
529 |
+ |
threadsStarted.await(); |
530 |
+ |
q.put(one); |
531 |
+ |
}}); |
532 |
+ |
} |
533 |
|
} |
534 |
|
|
535 |
+ |
/** |
536 |
+ |
* a deserialized/reserialized queue is usable |
537 |
+ |
*/ |
538 |
|
public void testSerialization() { |
539 |
< |
SynchronousQueue q = new SynchronousQueue(); |
540 |
< |
try { |
541 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
542 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
543 |
< |
out.writeObject(q); |
544 |
< |
out.close(); |
545 |
< |
|
546 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
547 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
548 |
< |
SynchronousQueue r = (SynchronousQueue)in.readObject(); |
549 |
< |
assertEquals(q.size(), r.size()); |
550 |
< |
while (!q.isEmpty()) |
551 |
< |
assertEquals(q.remove(), r.remove()); |
552 |
< |
} catch(Exception e){ |
459 |
< |
fail("unexpected exception"); |
539 |
> |
final SynchronousQueue x = new SynchronousQueue(); |
540 |
> |
final SynchronousQueue y = new SynchronousQueue(false); |
541 |
> |
final SynchronousQueue z = new SynchronousQueue(true); |
542 |
> |
assertSerialEquals(x, y); |
543 |
> |
assertNotSerialEquals(x, z); |
544 |
> |
SynchronousQueue[] qs = { x, y, z }; |
545 |
> |
for (SynchronousQueue q : qs) { |
546 |
> |
SynchronousQueue clone = serialClone(q); |
547 |
> |
assertNotSame(q, clone); |
548 |
> |
assertSerialEquals(q, clone); |
549 |
> |
assertTrue(clone.isEmpty()); |
550 |
> |
assertEquals(0, clone.size()); |
551 |
> |
assertEquals(0, clone.remainingCapacity()); |
552 |
> |
assertFalse(clone.offer(zero)); |
553 |
|
} |
554 |
|
} |
555 |
|
|
556 |
+ |
/** |
557 |
+ |
* drainTo(c) of empty queue doesn't transfer elements |
558 |
+ |
*/ |
559 |
+ |
public void testDrainTo() { testDrainTo(false); } |
560 |
+ |
public void testDrainTo_fair() { testDrainTo(true); } |
561 |
+ |
public void testDrainTo(boolean fair) { |
562 |
+ |
final SynchronousQueue q = new SynchronousQueue(fair); |
563 |
+ |
ArrayList l = new ArrayList(); |
564 |
+ |
q.drainTo(l); |
565 |
+ |
assertEquals(0, q.size()); |
566 |
+ |
assertEquals(0, l.size()); |
567 |
+ |
} |
568 |
+ |
|
569 |
+ |
/** |
570 |
+ |
* drainTo empties queue, unblocking a waiting put. |
571 |
+ |
*/ |
572 |
+ |
public void testDrainToWithActivePut() { testDrainToWithActivePut(false); } |
573 |
+ |
public void testDrainToWithActivePut_fair() { testDrainToWithActivePut(true); } |
574 |
+ |
public void testDrainToWithActivePut(boolean fair) { |
575 |
+ |
final SynchronousQueue q = new SynchronousQueue(fair); |
576 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
577 |
+ |
public void realRun() throws InterruptedException { |
578 |
+ |
q.put(one); |
579 |
+ |
}}); |
580 |
+ |
|
581 |
+ |
ArrayList l = new ArrayList(); |
582 |
+ |
long startTime = System.nanoTime(); |
583 |
+ |
while (l.isEmpty()) { |
584 |
+ |
q.drainTo(l); |
585 |
+ |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
586 |
+ |
fail("timed out"); |
587 |
+ |
Thread.yield(); |
588 |
+ |
} |
589 |
+ |
assertEquals(1, l.size()); |
590 |
+ |
assertSame(one, l.get(0)); |
591 |
+ |
awaitTermination(t); |
592 |
+ |
} |
593 |
+ |
|
594 |
+ |
/** |
595 |
+ |
* drainTo(c, n) empties up to n elements of queue into c |
596 |
+ |
*/ |
597 |
+ |
public void testDrainToN() throws InterruptedException { |
598 |
+ |
final SynchronousQueue q = new SynchronousQueue(); |
599 |
+ |
Thread t1 = newStartedThread(new CheckedRunnable() { |
600 |
+ |
public void realRun() throws InterruptedException { |
601 |
+ |
q.put(one); |
602 |
+ |
}}); |
603 |
+ |
|
604 |
+ |
Thread t2 = newStartedThread(new CheckedRunnable() { |
605 |
+ |
public void realRun() throws InterruptedException { |
606 |
+ |
q.put(two); |
607 |
+ |
}}); |
608 |
+ |
|
609 |
+ |
ArrayList l = new ArrayList(); |
610 |
+ |
int drained; |
611 |
+ |
while ((drained = q.drainTo(l, 1)) == 0) Thread.yield(); |
612 |
+ |
assertEquals(1, drained); |
613 |
+ |
assertEquals(1, l.size()); |
614 |
+ |
while ((drained = q.drainTo(l, 1)) == 0) Thread.yield(); |
615 |
+ |
assertEquals(1, drained); |
616 |
+ |
assertEquals(2, l.size()); |
617 |
+ |
assertTrue(l.contains(one)); |
618 |
+ |
assertTrue(l.contains(two)); |
619 |
+ |
awaitTermination(t1); |
620 |
+ |
awaitTermination(t2); |
621 |
+ |
} |
622 |
+ |
|
623 |
+ |
/** |
624 |
+ |
* remove(null), contains(null) always return false |
625 |
+ |
*/ |
626 |
+ |
public void testNeverContainsNull() { |
627 |
+ |
Collection<?> q = new SynchronousQueue(); |
628 |
+ |
assertFalse(q.contains(null)); |
629 |
+ |
assertFalse(q.remove(null)); |
630 |
+ |
} |
631 |
+ |
|
632 |
|
} |