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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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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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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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|
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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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|
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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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|
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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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|
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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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} |
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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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} |
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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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} |
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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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import java.util.Arrays; |
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import java.util.ArrayList; |
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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.Queue; |
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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 static java.util.concurrent.TimeUnit.MILLISECONDS; |
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|
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public class SynchronousQueueTest extends JSR166TestCase { |
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|
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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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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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} |
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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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|
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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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} |
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} |
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}); |
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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(); |
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t.join(); |
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} catch (Exception e){ |
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fail("Unexpected exception"); |
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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 testTimedOffer() { |
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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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try { |
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|
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assertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS)); |
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q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
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fail("Should block"); |
161 |
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} catch (InterruptedException success){} |
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} |
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}); |
164 |
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|
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try { |
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t.start(); |
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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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} catch (Exception e){ |
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fail("Unexpected exception"); |
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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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|
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|
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public void testTakeFromEmpty() { |
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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(){ |
180 |
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try { |
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q.take(); |
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fail("Should block"); |
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} catch (InterruptedException success){ } |
184 |
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} |
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}); |
186 |
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try { |
187 |
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
189 |
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t.interrupt(); |
190 |
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t.join(); |
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} catch (Exception e){ |
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fail("Unexpected exception"); |
193 |
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} |
41 |
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public static Test suite() { |
42 |
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return newTestSuite(SynchronousQueueTest.class, |
43 |
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new Fair().testSuite(), |
44 |
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new NonFair().testSuite()); |
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} |
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|
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public void testPoll(){ |
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SynchronousQueue q = new SynchronousQueue(); |
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assertNull(q.poll()); |
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/** |
48 |
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* Any SynchronousQueue is both empty and full |
49 |
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*/ |
50 |
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public void testEmptyFull() { testEmptyFull(false); } |
51 |
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public void testEmptyFull_fair() { testEmptyFull(true); } |
52 |
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public void testEmptyFull(boolean fair) { |
53 |
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final SynchronousQueue q = new SynchronousQueue(fair); |
54 |
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assertTrue(q.isEmpty()); |
55 |
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assertEquals(0, q.size()); |
56 |
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assertEquals(0, q.remainingCapacity()); |
57 |
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assertFalse(q.offer(zero)); |
58 |
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} |
59 |
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|
60 |
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public void testTimedPoll0() { |
60 |
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/** |
61 |
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* offer fails if no active taker |
62 |
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*/ |
63 |
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public void testOffer() { testOffer(false); } |
64 |
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public void testOffer_fair() { testOffer(true); } |
65 |
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public void testOffer(boolean fair) { |
66 |
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SynchronousQueue q = new SynchronousQueue(fair); |
67 |
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assertFalse(q.offer(one)); |
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} |
69 |
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|
70 |
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/** |
71 |
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* add throws IllegalStateException if no active taker |
72 |
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*/ |
73 |
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public void testAdd() { testAdd(false); } |
74 |
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public void testAdd_fair() { testAdd(true); } |
75 |
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public void testAdd(boolean fair) { |
76 |
> |
SynchronousQueue q = new SynchronousQueue(fair); |
77 |
> |
assertEquals(0, q.remainingCapacity()); |
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|
try { |
79 |
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SynchronousQueue q = new SynchronousQueue(); |
80 |
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assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
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} catch (InterruptedException e){ |
82 |
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fail("Unexpected exception"); |
83 |
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} |
84 |
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} |
79 |
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q.add(one); |
80 |
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shouldThrow(); |
81 |
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} catch (IllegalStateException success) {} |
82 |
> |
} |
83 |
> |
|
84 |
> |
/** |
85 |
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* addAll(this) throws IllegalArgumentException |
86 |
> |
*/ |
87 |
> |
public void testAddAll_self() { testAddAll_self(false); } |
88 |
> |
public void testAddAll_self_fair() { testAddAll_self(true); } |
89 |
> |
public void testAddAll_self(boolean fair) { |
90 |
> |
SynchronousQueue q = new SynchronousQueue(fair); |
91 |
> |
try { |
92 |
> |
q.addAll(q); |
93 |
> |
shouldThrow(); |
94 |
> |
} catch (IllegalArgumentException success) {} |
95 |
> |
} |
96 |
> |
|
97 |
> |
/** |
98 |
> |
* addAll throws ISE if no active taker |
99 |
> |
*/ |
100 |
> |
public void testAddAll_ISE() { testAddAll_ISE(false); } |
101 |
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public void testAddAll_ISE_fair() { testAddAll_ISE(true); } |
102 |
> |
public void testAddAll_ISE(boolean fair) { |
103 |
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SynchronousQueue q = new SynchronousQueue(fair); |
104 |
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Integer[] ints = new Integer[1]; |
105 |
> |
for (int i = 0; i < ints.length; i++) |
106 |
> |
ints[i] = i; |
107 |
> |
Collection<Integer> coll = Arrays.asList(ints); |
108 |
> |
try { |
109 |
> |
q.addAll(coll); |
110 |
> |
shouldThrow(); |
111 |
> |
} catch (IllegalStateException success) {} |
112 |
> |
} |
113 |
> |
|
114 |
> |
/** |
115 |
> |
* put blocks interruptibly if no active taker |
116 |
> |
*/ |
117 |
> |
public void testBlockingPut() { testBlockingPut(false); } |
118 |
> |
public void testBlockingPut_fair() { testBlockingPut(true); } |
119 |
> |
public void testBlockingPut(boolean fair) { |
120 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
121 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
122 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
123 |
> |
public void realRun() throws InterruptedException { |
124 |
> |
Thread.currentThread().interrupt(); |
125 |
> |
try { |
126 |
> |
q.put(99); |
127 |
> |
shouldThrow(); |
128 |
> |
} catch (InterruptedException success) {} |
129 |
> |
assertFalse(Thread.interrupted()); |
130 |
|
|
131 |
< |
public void testTimedPoll() { |
132 |
< |
try { |
133 |
< |
SynchronousQueue q = new SynchronousQueue(); |
134 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
135 |
< |
} catch (InterruptedException e){ |
136 |
< |
fail("Unexpected exception"); |
137 |
< |
} |
138 |
< |
} |
139 |
< |
|
140 |
< |
public void testInterruptedTimedPoll(){ |
141 |
< |
Thread t = new Thread(new Runnable() { |
142 |
< |
public void run() { |
143 |
< |
try { |
223 |
< |
SynchronousQueue q = new SynchronousQueue(); |
224 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
225 |
< |
} catch (InterruptedException success){ |
226 |
< |
} |
227 |
< |
}}); |
228 |
< |
t.start(); |
229 |
< |
try { |
230 |
< |
Thread.sleep(SHORT_DELAY_MS); |
231 |
< |
t.interrupt(); |
232 |
< |
t.join(); |
233 |
< |
} |
234 |
< |
catch (InterruptedException ie) { |
235 |
< |
fail("Unexpected exception"); |
236 |
< |
} |
131 |
> |
pleaseInterrupt.countDown(); |
132 |
> |
try { |
133 |
> |
q.put(99); |
134 |
> |
shouldThrow(); |
135 |
> |
} catch (InterruptedException success) {} |
136 |
> |
assertFalse(Thread.interrupted()); |
137 |
> |
}}); |
138 |
> |
|
139 |
> |
await(pleaseInterrupt); |
140 |
> |
assertThreadStaysAlive(t); |
141 |
> |
t.interrupt(); |
142 |
> |
awaitTermination(t); |
143 |
> |
assertEquals(0, q.remainingCapacity()); |
144 |
|
} |
145 |
|
|
146 |
< |
public void testTimedPollWithOffer(){ |
147 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
148 |
< |
Thread t = new Thread(new Runnable() { |
149 |
< |
public void run(){ |
150 |
< |
try { |
151 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
152 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
153 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
154 |
< |
fail("Should block"); |
155 |
< |
} catch (InterruptedException success) { } |
156 |
< |
} |
157 |
< |
}); |
158 |
< |
try { |
252 |
< |
t.start(); |
253 |
< |
Thread.sleep(SHORT_DELAY_MS * 2); |
254 |
< |
assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
255 |
< |
t.interrupt(); |
256 |
< |
t.join(); |
257 |
< |
} catch (Exception e){ |
258 |
< |
fail("Unexpected exception"); |
259 |
< |
} |
260 |
< |
} |
146 |
> |
/** |
147 |
> |
* put blocks interruptibly waiting for take |
148 |
> |
*/ |
149 |
> |
public void testPutWithTake() { testPutWithTake(false); } |
150 |
> |
public void testPutWithTake_fair() { testPutWithTake(true); } |
151 |
> |
public void testPutWithTake(boolean fair) { |
152 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
153 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
154 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
155 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
156 |
> |
public void realRun() throws InterruptedException { |
157 |
> |
pleaseTake.countDown(); |
158 |
> |
q.put(one); |
159 |
|
|
160 |
+ |
pleaseInterrupt.countDown(); |
161 |
+ |
try { |
162 |
+ |
q.put(99); |
163 |
+ |
shouldThrow(); |
164 |
+ |
} catch (InterruptedException success) {} |
165 |
+ |
assertFalse(Thread.interrupted()); |
166 |
+ |
}}); |
167 |
+ |
|
168 |
+ |
await(pleaseTake); |
169 |
+ |
assertEquals(q.remainingCapacity(), 0); |
170 |
+ |
try { assertSame(one, q.take()); } |
171 |
+ |
catch (InterruptedException e) { threadUnexpectedException(e); } |
172 |
+ |
|
173 |
+ |
await(pleaseInterrupt); |
174 |
+ |
assertThreadStaysAlive(t); |
175 |
+ |
t.interrupt(); |
176 |
+ |
awaitTermination(t); |
177 |
+ |
assertEquals(q.remainingCapacity(), 0); |
178 |
+ |
} |
179 |
+ |
|
180 |
+ |
/** |
181 |
+ |
* timed offer times out if elements not taken |
182 |
+ |
*/ |
183 |
+ |
public void testTimedOffer() { testTimedOffer(false); } |
184 |
+ |
public void testTimedOffer_fair() { testTimedOffer(true); } |
185 |
+ |
public void testTimedOffer(boolean fair) { |
186 |
+ |
final SynchronousQueue q = new SynchronousQueue(fair); |
187 |
+ |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
188 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
189 |
+ |
public void realRun() throws InterruptedException { |
190 |
+ |
long startTime = System.nanoTime(); |
191 |
+ |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
192 |
+ |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
193 |
+ |
pleaseInterrupt.countDown(); |
194 |
+ |
try { |
195 |
+ |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
196 |
+ |
shouldThrow(); |
197 |
+ |
} catch (InterruptedException success) {} |
198 |
+ |
}}); |
199 |
+ |
|
200 |
+ |
await(pleaseInterrupt); |
201 |
+ |
assertThreadStaysAlive(t); |
202 |
+ |
t.interrupt(); |
203 |
+ |
awaitTermination(t); |
204 |
+ |
} |
205 |
+ |
|
206 |
+ |
/** |
207 |
+ |
* poll return null if no active putter |
208 |
+ |
*/ |
209 |
+ |
public void testPoll() { testPoll(false); } |
210 |
+ |
public void testPoll_fair() { testPoll(true); } |
211 |
+ |
public void testPoll(boolean fair) { |
212 |
+ |
final SynchronousQueue q = new SynchronousQueue(fair); |
213 |
+ |
assertNull(q.poll()); |
214 |
+ |
} |
215 |
+ |
|
216 |
+ |
/** |
217 |
+ |
* timed poll with zero timeout times out if no active putter |
218 |
+ |
*/ |
219 |
+ |
public void testTimedPoll0() { testTimedPoll0(false); } |
220 |
+ |
public void testTimedPoll0_fair() { testTimedPoll0(true); } |
221 |
+ |
public void testTimedPoll0(boolean fair) { |
222 |
+ |
final SynchronousQueue q = new SynchronousQueue(fair); |
223 |
+ |
try { assertNull(q.poll(0, MILLISECONDS)); } |
224 |
+ |
catch (InterruptedException e) { threadUnexpectedException(e); } |
225 |
+ |
} |
226 |
+ |
|
227 |
+ |
/** |
228 |
+ |
* timed poll with nonzero timeout times out if no active putter |
229 |
+ |
*/ |
230 |
+ |
public void testTimedPoll() { testTimedPoll(false); } |
231 |
+ |
public void testTimedPoll_fair() { testTimedPoll(true); } |
232 |
+ |
public void testTimedPoll(boolean fair) { |
233 |
+ |
final SynchronousQueue q = new SynchronousQueue(fair); |
234 |
+ |
long startTime = System.nanoTime(); |
235 |
+ |
try { assertNull(q.poll(timeoutMillis(), MILLISECONDS)); } |
236 |
+ |
catch (InterruptedException e) { threadUnexpectedException(e); } |
237 |
+ |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
238 |
+ |
} |
239 |
+ |
|
240 |
+ |
/** |
241 |
+ |
* timed poll before a delayed offer times out, returning null; |
242 |
+ |
* after offer succeeds; on interruption throws |
243 |
+ |
*/ |
244 |
+ |
public void testTimedPollWithOffer() { testTimedPollWithOffer(false); } |
245 |
+ |
public void testTimedPollWithOffer_fair() { testTimedPollWithOffer(true); } |
246 |
+ |
public void testTimedPollWithOffer(boolean fair) { |
247 |
+ |
final SynchronousQueue q = new SynchronousQueue(fair); |
248 |
+ |
final CountDownLatch pleaseOffer = new CountDownLatch(1); |
249 |
+ |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
250 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
251 |
+ |
public void realRun() throws InterruptedException { |
252 |
+ |
long startTime = System.nanoTime(); |
253 |
+ |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
254 |
+ |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
255 |
+ |
|
256 |
+ |
pleaseOffer.countDown(); |
257 |
+ |
startTime = System.nanoTime(); |
258 |
+ |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
259 |
+ |
assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS); |
260 |
|
|
261 |
< |
public void testPeek(){ |
262 |
< |
SynchronousQueue q = new SynchronousQueue(); |
263 |
< |
assertNull(q.peek()); |
264 |
< |
} |
261 |
> |
Thread.currentThread().interrupt(); |
262 |
> |
try { |
263 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
264 |
> |
shouldThrow(); |
265 |
> |
} catch (InterruptedException success) {} |
266 |
> |
assertFalse(Thread.interrupted()); |
267 |
|
|
268 |
< |
public void testElement(){ |
269 |
< |
SynchronousQueue q = new SynchronousQueue(); |
268 |
> |
pleaseInterrupt.countDown(); |
269 |
> |
try { |
270 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
271 |
> |
shouldThrow(); |
272 |
> |
} catch (InterruptedException success) {} |
273 |
> |
assertFalse(Thread.interrupted()); |
274 |
> |
}}); |
275 |
> |
|
276 |
> |
await(pleaseOffer); |
277 |
> |
long startTime = System.nanoTime(); |
278 |
> |
try { assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); } |
279 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
280 |
> |
assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS); |
281 |
> |
|
282 |
> |
await(pleaseInterrupt); |
283 |
> |
assertThreadStaysAlive(t); |
284 |
> |
t.interrupt(); |
285 |
> |
awaitTermination(t); |
286 |
> |
} |
287 |
> |
|
288 |
> |
/** |
289 |
> |
* peek() returns null if no active putter |
290 |
> |
*/ |
291 |
> |
public void testPeek() { testPeek(false); } |
292 |
> |
public void testPeek_fair() { testPeek(true); } |
293 |
> |
public void testPeek(boolean fair) { |
294 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
295 |
> |
assertNull(q.peek()); |
296 |
> |
} |
297 |
> |
|
298 |
> |
/** |
299 |
> |
* element() throws NoSuchElementException if no active putter |
300 |
> |
*/ |
301 |
> |
public void testElement() { testElement(false); } |
302 |
> |
public void testElement_fair() { testElement(true); } |
303 |
> |
public void testElement(boolean fair) { |
304 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
305 |
|
try { |
306 |
|
q.element(); |
307 |
< |
fail("no such element"); |
308 |
< |
} |
274 |
< |
catch (NoSuchElementException success) {} |
307 |
> |
shouldThrow(); |
308 |
> |
} catch (NoSuchElementException success) {} |
309 |
|
} |
310 |
|
|
311 |
< |
public void testRemove(){ |
312 |
< |
SynchronousQueue q = new SynchronousQueue(); |
311 |
> |
/** |
312 |
> |
* remove() throws NoSuchElementException if no active putter |
313 |
> |
*/ |
314 |
> |
public void testRemove() { testRemove(false); } |
315 |
> |
public void testRemove_fair() { testRemove(true); } |
316 |
> |
public void testRemove(boolean fair) { |
317 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
318 |
|
try { |
319 |
|
q.remove(); |
320 |
< |
fail("remove should throw"); |
321 |
< |
} catch (NoSuchElementException success){ |
283 |
< |
} |
320 |
> |
shouldThrow(); |
321 |
> |
} catch (NoSuchElementException success) {} |
322 |
|
} |
323 |
|
|
324 |
< |
public void testRemoveElement(){ |
325 |
< |
SynchronousQueue q = new SynchronousQueue(); |
326 |
< |
for (int i = 1; i < N; i+=2) { |
327 |
< |
assertFalse(q.remove(new Integer(i))); |
328 |
< |
} |
329 |
< |
assert(q.isEmpty()); |
330 |
< |
} |
331 |
< |
|
332 |
< |
public void testContains(){ |
333 |
< |
SynchronousQueue q = new SynchronousQueue(); |
334 |
< |
for (int i = 0; i < N; ++i) { |
335 |
< |
assertFalse(q.contains(new Integer(i))); |
336 |
< |
} |
337 |
< |
} |
338 |
< |
|
339 |
< |
public void testClear(){ |
340 |
< |
SynchronousQueue q = new SynchronousQueue(); |
324 |
> |
/** |
325 |
> |
* contains returns false |
326 |
> |
*/ |
327 |
> |
public void testContains() { testContains(false); } |
328 |
> |
public void testContains_fair() { testContains(true); } |
329 |
> |
public void testContains(boolean fair) { |
330 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
331 |
> |
assertFalse(q.contains(zero)); |
332 |
> |
} |
333 |
> |
|
334 |
> |
/** |
335 |
> |
* clear ensures isEmpty |
336 |
> |
*/ |
337 |
> |
public void testClear() { testClear(false); } |
338 |
> |
public void testClear_fair() { testClear(true); } |
339 |
> |
public void testClear(boolean fair) { |
340 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
341 |
|
q.clear(); |
342 |
|
assertTrue(q.isEmpty()); |
343 |
|
} |
344 |
|
|
345 |
< |
public void testContainsAll(){ |
346 |
< |
SynchronousQueue q = new SynchronousQueue(); |
345 |
> |
/** |
346 |
> |
* containsAll returns false unless empty |
347 |
> |
*/ |
348 |
> |
public void testContainsAll() { testContainsAll(false); } |
349 |
> |
public void testContainsAll_fair() { testContainsAll(true); } |
350 |
> |
public void testContainsAll(boolean fair) { |
351 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
352 |
|
Integer[] empty = new Integer[0]; |
353 |
< |
Integer[] ints = new Integer[1]; ints[0] = new Integer(0); |
354 |
< |
// assertTrue(q.containsAll(Arrays.asList(empty))); |
353 |
> |
assertTrue(q.containsAll(Arrays.asList(empty))); |
354 |
> |
Integer[] ints = new Integer[1]; ints[0] = zero; |
355 |
|
assertFalse(q.containsAll(Arrays.asList(ints))); |
356 |
|
} |
357 |
|
|
358 |
< |
public void testRetainAll(){ |
359 |
< |
SynchronousQueue q = new SynchronousQueue(); |
358 |
> |
/** |
359 |
> |
* retainAll returns false |
360 |
> |
*/ |
361 |
> |
public void testRetainAll() { testRetainAll(false); } |
362 |
> |
public void testRetainAll_fair() { testRetainAll(true); } |
363 |
> |
public void testRetainAll(boolean fair) { |
364 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
365 |
|
Integer[] empty = new Integer[0]; |
366 |
< |
Integer[] ints = new Integer[1]; ints[0] = new Integer(0); |
367 |
< |
q.retainAll(Arrays.asList(ints)); |
368 |
< |
// assertTrue(q.containsAll(Arrays.asList(empty))); |
321 |
< |
assertFalse(q.containsAll(Arrays.asList(ints))); |
366 |
> |
assertFalse(q.retainAll(Arrays.asList(empty))); |
367 |
> |
Integer[] ints = new Integer[1]; ints[0] = zero; |
368 |
> |
assertFalse(q.retainAll(Arrays.asList(ints))); |
369 |
|
} |
370 |
|
|
371 |
< |
public void testRemoveAll(){ |
372 |
< |
SynchronousQueue q = new SynchronousQueue(); |
371 |
> |
/** |
372 |
> |
* removeAll returns false |
373 |
> |
*/ |
374 |
> |
public void testRemoveAll() { testRemoveAll(false); } |
375 |
> |
public void testRemoveAll_fair() { testRemoveAll(true); } |
376 |
> |
public void testRemoveAll(boolean fair) { |
377 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
378 |
|
Integer[] empty = new Integer[0]; |
379 |
< |
Integer[] ints = new Integer[1]; ints[0] = new Integer(0); |
380 |
< |
q.removeAll(Arrays.asList(ints)); |
329 |
< |
// assertTrue(q.containsAll(Arrays.asList(empty))); |
379 |
> |
assertFalse(q.removeAll(Arrays.asList(empty))); |
380 |
> |
Integer[] ints = new Integer[1]; ints[0] = zero; |
381 |
|
assertFalse(q.containsAll(Arrays.asList(ints))); |
382 |
|
} |
383 |
|
|
384 |
< |
|
385 |
< |
public void testToArray(){ |
386 |
< |
SynchronousQueue q = new SynchronousQueue(); |
387 |
< |
Object[] o = q.toArray(); |
384 |
> |
/** |
385 |
> |
* toArray is empty |
386 |
> |
*/ |
387 |
> |
public void testToArray() { testToArray(false); } |
388 |
> |
public void testToArray_fair() { testToArray(true); } |
389 |
> |
public void testToArray(boolean fair) { |
390 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
391 |
> |
Object[] o = q.toArray(); |
392 |
|
assertEquals(o.length, 0); |
393 |
|
} |
394 |
|
|
395 |
< |
public void testToArray2(){ |
396 |
< |
SynchronousQueue q = new SynchronousQueue(); |
397 |
< |
Integer[] ints = new Integer[1]; |
395 |
> |
/** |
396 |
> |
* toArray(a) is nulled at position 0 |
397 |
> |
*/ |
398 |
> |
public void testToArray2() { testToArray2(false); } |
399 |
> |
public void testToArray2_fair() { testToArray2(true); } |
400 |
> |
public void testToArray2(boolean fair) { |
401 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
402 |
> |
Integer[] ints = new Integer[1]; |
403 |
|
assertNull(ints[0]); |
404 |
|
} |
405 |
< |
|
406 |
< |
public void testIterator(){ |
407 |
< |
SynchronousQueue q = new SynchronousQueue(); |
408 |
< |
Iterator it = q.iterator(); |
405 |
> |
|
406 |
> |
/** |
407 |
> |
* toArray(null) throws NPE |
408 |
> |
*/ |
409 |
> |
public void testToArray_null() { testToArray_null(false); } |
410 |
> |
public void testToArray_null_fair() { testToArray_null(true); } |
411 |
> |
public void testToArray_null(boolean fair) { |
412 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
413 |
> |
try { |
414 |
> |
Object o[] = q.toArray(null); |
415 |
> |
shouldThrow(); |
416 |
> |
} catch (NullPointerException success) {} |
417 |
> |
} |
418 |
> |
|
419 |
> |
/** |
420 |
> |
* iterator does not traverse any elements |
421 |
> |
*/ |
422 |
> |
public void testIterator() { testIterator(false); } |
423 |
> |
public void testIterator_fair() { testIterator(true); } |
424 |
> |
public void testIterator(boolean fair) { |
425 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
426 |
> |
Iterator it = q.iterator(); |
427 |
|
assertFalse(it.hasNext()); |
428 |
|
try { |
429 |
|
Object x = it.next(); |
430 |
< |
fail("should throw"); |
431 |
< |
} |
354 |
< |
catch (NoSuchElementException success) {} |
430 |
> |
shouldThrow(); |
431 |
> |
} catch (NoSuchElementException success) {} |
432 |
|
} |
433 |
|
|
434 |
< |
public void testIteratorRemove(){ |
435 |
< |
SynchronousQueue q = new SynchronousQueue(); |
436 |
< |
Iterator it = q.iterator(); |
434 |
> |
/** |
435 |
> |
* iterator remove throws ISE |
436 |
> |
*/ |
437 |
> |
public void testIteratorRemove() { testIteratorRemove(false); } |
438 |
> |
public void testIteratorRemove_fair() { testIteratorRemove(true); } |
439 |
> |
public void testIteratorRemove(boolean fair) { |
440 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
441 |
> |
Iterator it = q.iterator(); |
442 |
|
try { |
443 |
|
it.remove(); |
444 |
< |
fail("should throw"); |
445 |
< |
} |
364 |
< |
catch (IllegalStateException success) {} |
444 |
> |
shouldThrow(); |
445 |
> |
} catch (IllegalStateException success) {} |
446 |
|
} |
447 |
|
|
448 |
< |
public void testToString(){ |
449 |
< |
SynchronousQueue q = new SynchronousQueue(); |
448 |
> |
/** |
449 |
> |
* toString returns a non-null string |
450 |
> |
*/ |
451 |
> |
public void testToString() { testToString(false); } |
452 |
> |
public void testToString_fair() { testToString(true); } |
453 |
> |
public void testToString(boolean fair) { |
454 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
455 |
|
String s = q.toString(); |
456 |
< |
assertTrue(s != null); |
457 |
< |
} |
372 |
< |
|
456 |
> |
assertNotNull(s); |
457 |
> |
} |
458 |
|
|
459 |
< |
public void testOfferInExecutor() { |
460 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
459 |
> |
/** |
460 |
> |
* offer transfers elements across Executor tasks |
461 |
> |
*/ |
462 |
> |
public void testOfferInExecutor() { testOfferInExecutor(false); } |
463 |
> |
public void testOfferInExecutor_fair() { testOfferInExecutor(true); } |
464 |
> |
public void testOfferInExecutor(boolean fair) { |
465 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
466 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
467 |
< |
final Integer one = new Integer(1); |
467 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
468 |
|
|
469 |
< |
executor.execute(new Runnable() { |
470 |
< |
public void run() { |
469 |
> |
executor.execute(new CheckedRunnable() { |
470 |
> |
public void realRun() throws InterruptedException { |
471 |
|
assertFalse(q.offer(one)); |
472 |
< |
try { |
473 |
< |
assertTrue(q.offer(one, MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS)); |
474 |
< |
assertEquals(0, q.remainingCapacity()); |
475 |
< |
} |
476 |
< |
catch (InterruptedException e) { |
477 |
< |
fail("should not be interrupted"); |
478 |
< |
} |
479 |
< |
} |
480 |
< |
}); |
481 |
< |
|
482 |
< |
executor.execute(new Runnable() { |
483 |
< |
public void run() { |
484 |
< |
try { |
485 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
486 |
< |
assertEquals(one, q.take()); |
487 |
< |
} |
488 |
< |
catch (InterruptedException e) { |
489 |
< |
fail("should not be interrupted"); |
490 |
< |
} |
491 |
< |
} |
492 |
< |
}); |
493 |
< |
|
404 |
< |
executor.shutdown(); |
405 |
< |
|
406 |
< |
} |
407 |
< |
|
408 |
< |
public void testPollInExecutor() { |
409 |
< |
|
410 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
411 |
< |
|
472 |
> |
threadsStarted.await(); |
473 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
474 |
> |
assertEquals(0, q.remainingCapacity()); |
475 |
> |
}}); |
476 |
> |
|
477 |
> |
executor.execute(new CheckedRunnable() { |
478 |
> |
public void realRun() throws InterruptedException { |
479 |
> |
threadsStarted.await(); |
480 |
> |
assertSame(one, q.take()); |
481 |
> |
}}); |
482 |
> |
|
483 |
> |
joinPool(executor); |
484 |
> |
} |
485 |
> |
|
486 |
> |
/** |
487 |
> |
* timed poll retrieves elements across Executor threads |
488 |
> |
*/ |
489 |
> |
public void testPollInExecutor() { testPollInExecutor(false); } |
490 |
> |
public void testPollInExecutor_fair() { testPollInExecutor(true); } |
491 |
> |
public void testPollInExecutor(boolean fair) { |
492 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
493 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
494 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
495 |
< |
|
496 |
< |
executor.execute(new Runnable() { |
415 |
< |
public void run() { |
495 |
> |
executor.execute(new CheckedRunnable() { |
496 |
> |
public void realRun() throws InterruptedException { |
497 |
|
assertNull(q.poll()); |
498 |
< |
try { |
499 |
< |
assertTrue(null != q.poll(MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS)); |
500 |
< |
assertTrue(q.isEmpty()); |
501 |
< |
} |
502 |
< |
catch (InterruptedException e) { |
503 |
< |
fail("should not be interrupted"); |
504 |
< |
} |
505 |
< |
} |
506 |
< |
}); |
507 |
< |
|
508 |
< |
executor.execute(new Runnable() { |
509 |
< |
public void run() { |
510 |
< |
try { |
511 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
512 |
< |
q.put(new Integer(1)); |
513 |
< |
} |
514 |
< |
catch (InterruptedException e) { |
515 |
< |
fail("should not be interrupted"); |
516 |
< |
} |
517 |
< |
} |
518 |
< |
}); |
519 |
< |
|
520 |
< |
executor.shutdown(); |
521 |
< |
|
498 |
> |
threadsStarted.await(); |
499 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
500 |
> |
assertTrue(q.isEmpty()); |
501 |
> |
}}); |
502 |
> |
|
503 |
> |
executor.execute(new CheckedRunnable() { |
504 |
> |
public void realRun() throws InterruptedException { |
505 |
> |
threadsStarted.await(); |
506 |
> |
q.put(one); |
507 |
> |
}}); |
508 |
> |
|
509 |
> |
joinPool(executor); |
510 |
> |
} |
511 |
> |
|
512 |
> |
/** |
513 |
> |
* a deserialized serialized queue is usable |
514 |
> |
*/ |
515 |
> |
public void testSerialization() { testSerialization(false); } |
516 |
> |
public void testSerialization_fair() { testSerialization(true); } |
517 |
> |
public void testSerialization(boolean fair) { |
518 |
> |
final SynchronousQueue x = new SynchronousQueue(fair); |
519 |
> |
final SynchronousQueue y = serialClone(x); |
520 |
> |
assertTrue(x != y); |
521 |
> |
assertTrue(x.isEmpty()); |
522 |
> |
assertTrue(y.isEmpty()); |
523 |
> |
} |
524 |
> |
|
525 |
> |
/** |
526 |
> |
* drainTo(c) of empty queue doesn't transfer elements |
527 |
> |
*/ |
528 |
> |
public void testDrainTo() { testDrainTo(false); } |
529 |
> |
public void testDrainTo_fair() { testDrainTo(true); } |
530 |
> |
public void testDrainTo(boolean fair) { |
531 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
532 |
> |
ArrayList l = new ArrayList(); |
533 |
> |
q.drainTo(l); |
534 |
> |
assertEquals(q.size(), 0); |
535 |
> |
assertEquals(l.size(), 0); |
536 |
> |
} |
537 |
> |
|
538 |
> |
/** |
539 |
> |
* drainTo empties queue, unblocking a waiting put. |
540 |
> |
*/ |
541 |
> |
public void testDrainToWithActivePut() { testDrainToWithActivePut(false); } |
542 |
> |
public void testDrainToWithActivePut_fair() { testDrainToWithActivePut(true); } |
543 |
> |
public void testDrainToWithActivePut(boolean fair) { |
544 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
545 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
546 |
> |
public void realRun() throws InterruptedException { |
547 |
> |
q.put(one); |
548 |
> |
}}); |
549 |
> |
|
550 |
> |
ArrayList l = new ArrayList(); |
551 |
> |
long startTime = System.nanoTime(); |
552 |
> |
while (l.isEmpty()) { |
553 |
> |
q.drainTo(l); |
554 |
> |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
555 |
> |
fail("timed out"); |
556 |
> |
Thread.yield(); |
557 |
> |
} |
558 |
> |
assertTrue(l.size() == 1); |
559 |
> |
assertSame(one, l.get(0)); |
560 |
> |
awaitTermination(t); |
561 |
> |
} |
562 |
> |
|
563 |
> |
/** |
564 |
> |
* drainTo(c, n) empties up to n elements of queue into c |
565 |
> |
*/ |
566 |
> |
public void testDrainToN() throws InterruptedException { |
567 |
> |
final SynchronousQueue q = new SynchronousQueue(); |
568 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
569 |
> |
public void realRun() throws InterruptedException { |
570 |
> |
q.put(one); |
571 |
> |
}}); |
572 |
> |
|
573 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
574 |
> |
public void realRun() throws InterruptedException { |
575 |
> |
q.put(two); |
576 |
> |
}}); |
577 |
> |
|
578 |
> |
ArrayList l = new ArrayList(); |
579 |
> |
delay(SHORT_DELAY_MS); |
580 |
> |
q.drainTo(l, 1); |
581 |
> |
assertEquals(1, l.size()); |
582 |
> |
q.drainTo(l, 1); |
583 |
> |
assertEquals(2, l.size()); |
584 |
> |
assertTrue(l.contains(one)); |
585 |
> |
assertTrue(l.contains(two)); |
586 |
> |
awaitTermination(t1); |
587 |
> |
awaitTermination(t2); |
588 |
|
} |
589 |
|
|
590 |
|
} |