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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include 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 static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.io.*; |
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|
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import java.util.ArrayList; |
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import java.util.Arrays; |
13 |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
16 |
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import java.util.concurrent.BlockingQueue; |
17 |
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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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|
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import junit.framework.Test; |
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|
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public class SynchronousQueueTest extends JSR166TestCase { |
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|
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} |
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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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main(suite(), args); |
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} |
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|
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public static Test suite() { |
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} |
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|
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/** |
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* A SynchronousQueue is both empty and full |
41 |
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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()); |
47 |
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assertFalse(q.offer(zero)); |
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} |
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|
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/** |
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* A fair SynchronousQueue is both empty and full |
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* Any SynchronousQueue is both empty and full |
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*/ |
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public void testFairEmptyFull() { |
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SynchronousQueue q = new SynchronousQueue(true); |
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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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} |
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|
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/** |
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* offer(null) throws NPE |
63 |
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*/ |
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public void testOfferNull() { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
67 |
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q.offer(null); |
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shouldThrow(); |
69 |
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} catch (NullPointerException success) {} |
70 |
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} |
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|
72 |
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/** |
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* add(null) throws NPE |
74 |
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*/ |
75 |
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public void testAddNull() { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.add(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* offer fails if no active taker |
63 |
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*/ |
64 |
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public void testOffer() { |
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SynchronousQueue q = new SynchronousQueue(); |
64 |
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public void testOffer() { testOffer(false); } |
65 |
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public void testOffer_fair() { testOffer(true); } |
66 |
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public void testOffer(boolean fair) { |
67 |
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SynchronousQueue q = new SynchronousQueue(fair); |
68 |
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assertFalse(q.offer(one)); |
69 |
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} |
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|
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/** |
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* add throws ISE if no active taker |
72 |
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* add throws IllegalStateException if no active taker |
73 |
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*/ |
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public void testAdd() { |
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public void testAdd() { testAdd(false); } |
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public void testAdd_fair() { testAdd(true); } |
76 |
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public void testAdd(boolean fair) { |
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SynchronousQueue q = new SynchronousQueue(fair); |
78 |
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assertEquals(0, q.remainingCapacity()); |
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try { |
96 |
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SynchronousQueue q = new SynchronousQueue(); |
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assertEquals(0, q.remainingCapacity()); |
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q.add(one); |
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shouldThrow(); |
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} catch (IllegalStateException success) {} |
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} |
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|
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/** |
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* addAll(null) throws NPE |
105 |
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*/ |
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public void testAddAll1() { |
107 |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
109 |
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q.addAll(null); |
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shouldThrow(); |
111 |
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} catch (NullPointerException success) {} |
112 |
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} |
113 |
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|
114 |
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/** |
115 |
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* addAll(this) throws IAE |
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* addAll(this) throws IllegalArgumentException |
87 |
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*/ |
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public void testAddAllSelf() { |
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public void testAddAll_self() { testAddAll_self(false); } |
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public void testAddAll_self_fair() { testAddAll_self(true); } |
90 |
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public void testAddAll_self(boolean fair) { |
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SynchronousQueue q = new SynchronousQueue(fair); |
92 |
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try { |
119 |
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SynchronousQueue q = new SynchronousQueue(); |
93 |
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q.addAll(q); |
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shouldThrow(); |
95 |
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} catch (IllegalArgumentException success) {} |
96 |
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} |
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|
98 |
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/** |
126 |
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* addAll of a collection with null elements throws NPE |
127 |
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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[1]; |
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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
137 |
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/** |
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* addAll throws ISE if no active taker |
100 |
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*/ |
101 |
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public void testAddAll4() { |
101 |
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public void testAddAll_ISE() { testAddAll_ISE(false); } |
102 |
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public void testAddAll_ISE_fair() { testAddAll_ISE(true); } |
103 |
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public void testAddAll_ISE(boolean fair) { |
104 |
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SynchronousQueue q = new SynchronousQueue(fair); |
105 |
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Integer[] ints = new Integer[1]; |
106 |
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for (int i = 0; i < ints.length; i++) |
107 |
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ints[i] = i; |
108 |
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Collection<Integer> coll = Arrays.asList(ints); |
109 |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
143 |
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Integer[] ints = new Integer[1]; |
144 |
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for (int i = 0; i < 1; ++i) |
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ints[i] = new Integer(i); |
146 |
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q.addAll(Arrays.asList(ints)); |
110 |
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q.addAll(coll); |
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shouldThrow(); |
112 |
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} catch (IllegalStateException success) {} |
113 |
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} |
114 |
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|
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/** |
152 |
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* put(null) throws NPE |
153 |
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*/ |
154 |
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public void testPutNull() throws InterruptedException { |
155 |
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try { |
156 |
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SynchronousQueue q = new SynchronousQueue(); |
157 |
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q.put(null); |
158 |
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shouldThrow(); |
159 |
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} catch (NullPointerException success) {} |
160 |
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} |
161 |
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|
162 |
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/** |
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* put blocks interruptibly if no active taker |
117 |
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*/ |
118 |
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public void testBlockingPut() throws InterruptedException { |
119 |
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Thread t = new Thread(new CheckedInterruptedRunnable() { |
118 |
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public void testBlockingPut() { testBlockingPut(false); } |
119 |
> |
public void testBlockingPut_fair() { testBlockingPut(true); } |
120 |
> |
public void testBlockingPut(boolean fair) { |
121 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
122 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
123 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
124 |
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public void realRun() throws InterruptedException { |
125 |
< |
SynchronousQueue q = new SynchronousQueue(); |
169 |
< |
q.put(zero); |
170 |
< |
}}); |
171 |
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|
172 |
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t.start(); |
173 |
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Thread.sleep(SHORT_DELAY_MS); |
174 |
< |
t.interrupt(); |
175 |
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t.join(); |
176 |
< |
} |
177 |
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|
178 |
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/** |
179 |
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* put blocks waiting for take |
180 |
< |
*/ |
181 |
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public void testPutWithTake() throws InterruptedException { |
182 |
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final SynchronousQueue q = new SynchronousQueue(); |
183 |
< |
Thread t = new Thread(new CheckedRunnable() { |
184 |
< |
public void realRun() throws InterruptedException { |
185 |
< |
int added = 0; |
125 |
> |
Thread.currentThread().interrupt(); |
126 |
|
try { |
127 |
< |
while (true) { |
128 |
< |
q.put(added); |
129 |
< |
++added; |
130 |
< |
} |
191 |
< |
} catch (InterruptedException success) { |
192 |
< |
assertEquals(1, added); |
193 |
< |
} |
194 |
< |
}}); |
195 |
< |
|
196 |
< |
t.start(); |
197 |
< |
Thread.sleep(SHORT_DELAY_MS); |
198 |
< |
assertEquals(0, q.take()); |
199 |
< |
Thread.sleep(SHORT_DELAY_MS); |
200 |
< |
t.interrupt(); |
201 |
< |
t.join(); |
202 |
< |
} |
127 |
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q.put(99); |
128 |
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shouldThrow(); |
129 |
> |
} catch (InterruptedException success) {} |
130 |
> |
assertFalse(Thread.interrupted()); |
131 |
|
|
132 |
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/** |
133 |
< |
* timed offer times out if elements not taken |
134 |
< |
*/ |
135 |
< |
public void testTimedOffer() throws InterruptedException { |
136 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
137 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
210 |
< |
public void realRun() throws InterruptedException { |
211 |
< |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
212 |
< |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
132 |
> |
pleaseInterrupt.countDown(); |
133 |
> |
try { |
134 |
> |
q.put(99); |
135 |
> |
shouldThrow(); |
136 |
> |
} catch (InterruptedException success) {} |
137 |
> |
assertFalse(Thread.interrupted()); |
138 |
|
}}); |
139 |
|
|
140 |
< |
t.start(); |
141 |
< |
Thread.sleep(SMALL_DELAY_MS); |
140 |
> |
await(pleaseInterrupt); |
141 |
> |
assertThreadStaysAlive(t); |
142 |
|
t.interrupt(); |
143 |
< |
t.join(); |
143 |
> |
awaitTermination(t); |
144 |
> |
assertEquals(0, q.remainingCapacity()); |
145 |
|
} |
146 |
|
|
147 |
|
/** |
148 |
< |
* put blocks interruptibly if no active taker |
148 |
> |
* put blocks interruptibly waiting for take |
149 |
|
*/ |
150 |
< |
public void testFairBlockingPut() throws InterruptedException { |
151 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
150 |
> |
public void testPutWithTake() { testPutWithTake(false); } |
151 |
> |
public void testPutWithTake_fair() { testPutWithTake(true); } |
152 |
> |
public void testPutWithTake(boolean fair) { |
153 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
154 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
155 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
156 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
157 |
|
public void realRun() throws InterruptedException { |
158 |
< |
SynchronousQueue q = new SynchronousQueue(true); |
159 |
< |
q.put(zero); |
229 |
< |
}}); |
230 |
< |
|
231 |
< |
t.start(); |
232 |
< |
Thread.sleep(SHORT_DELAY_MS); |
233 |
< |
t.interrupt(); |
234 |
< |
t.join(); |
235 |
< |
} |
158 |
> |
pleaseTake.countDown(); |
159 |
> |
q.put(one); |
160 |
|
|
161 |
< |
/** |
238 |
< |
* put blocks waiting for take |
239 |
< |
*/ |
240 |
< |
public void testFairPutWithTake() throws InterruptedException { |
241 |
< |
final SynchronousQueue q = new SynchronousQueue(true); |
242 |
< |
Thread t = new Thread(new CheckedRunnable() { |
243 |
< |
public void realRun() throws InterruptedException { |
244 |
< |
int added = 0; |
161 |
> |
pleaseInterrupt.countDown(); |
162 |
|
try { |
163 |
< |
while (true) { |
164 |
< |
q.put(added); |
165 |
< |
++added; |
166 |
< |
} |
250 |
< |
} catch (InterruptedException success) { |
251 |
< |
assertEquals(1, added); |
252 |
< |
} |
163 |
> |
q.put(99); |
164 |
> |
shouldThrow(); |
165 |
> |
} catch (InterruptedException success) {} |
166 |
> |
assertFalse(Thread.interrupted()); |
167 |
|
}}); |
168 |
|
|
169 |
< |
t.start(); |
170 |
< |
Thread.sleep(SHORT_DELAY_MS); |
171 |
< |
assertEquals(0, q.take()); |
172 |
< |
Thread.sleep(SHORT_DELAY_MS); |
259 |
< |
t.interrupt(); |
260 |
< |
t.join(); |
261 |
< |
} |
262 |
< |
|
263 |
< |
/** |
264 |
< |
* timed offer times out if elements not taken |
265 |
< |
*/ |
266 |
< |
public void testFairTimedOffer() throws InterruptedException { |
267 |
< |
final SynchronousQueue q = new SynchronousQueue(true); |
268 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
269 |
< |
public void realRun() throws InterruptedException { |
270 |
< |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
271 |
< |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
272 |
< |
}}); |
169 |
> |
await(pleaseTake); |
170 |
> |
assertEquals(0, q.remainingCapacity()); |
171 |
> |
try { assertSame(one, q.take()); } |
172 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
173 |
|
|
174 |
< |
t.start(); |
175 |
< |
Thread.sleep(SMALL_DELAY_MS); |
174 |
> |
await(pleaseInterrupt); |
175 |
> |
assertThreadStaysAlive(t); |
176 |
|
t.interrupt(); |
177 |
< |
t.join(); |
177 |
> |
awaitTermination(t); |
178 |
> |
assertEquals(0, q.remainingCapacity()); |
179 |
|
} |
180 |
|
|
280 |
– |
|
181 |
|
/** |
182 |
< |
* take blocks interruptibly when empty |
182 |
> |
* timed offer times out if elements not taken |
183 |
|
*/ |
184 |
< |
public void testFairTakeFromEmpty() throws InterruptedException { |
185 |
< |
final SynchronousQueue q = new SynchronousQueue(true); |
186 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
187 |
< |
public void realRun() throws InterruptedException { |
188 |
< |
q.take(); |
184 |
> |
public void testTimedOffer() { testTimedOffer(false); } |
185 |
> |
public void testTimedOffer_fair() { testTimedOffer(true); } |
186 |
> |
public void testTimedOffer(boolean fair) { |
187 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
188 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
189 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
190 |
> |
public void realRun() throws InterruptedException { |
191 |
> |
long startTime = System.nanoTime(); |
192 |
> |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
193 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
194 |
> |
pleaseInterrupt.countDown(); |
195 |
> |
try { |
196 |
> |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
197 |
> |
shouldThrow(); |
198 |
> |
} catch (InterruptedException success) {} |
199 |
|
}}); |
200 |
|
|
201 |
< |
t.start(); |
202 |
< |
Thread.sleep(SHORT_DELAY_MS); |
201 |
> |
await(pleaseInterrupt); |
202 |
> |
assertThreadStaysAlive(t); |
203 |
|
t.interrupt(); |
204 |
< |
t.join(); |
204 |
> |
awaitTermination(t); |
205 |
|
} |
206 |
|
|
207 |
|
/** |
208 |
< |
* poll fails unless active taker |
208 |
> |
* poll return null if no active putter |
209 |
|
*/ |
210 |
< |
public void testPoll() { |
211 |
< |
SynchronousQueue q = new SynchronousQueue(); |
210 |
> |
public void testPoll() { testPoll(false); } |
211 |
> |
public void testPoll_fair() { testPoll(true); } |
212 |
> |
public void testPoll(boolean fair) { |
213 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
214 |
|
assertNull(q.poll()); |
215 |
|
} |
216 |
|
|
217 |
|
/** |
218 |
< |
* timed pool with zero timeout times out if no active taker |
218 |
> |
* timed poll with zero timeout times out if no active putter |
219 |
|
*/ |
220 |
< |
public void testTimedPoll0() throws InterruptedException { |
221 |
< |
SynchronousQueue q = new SynchronousQueue(); |
222 |
< |
assertNull(q.poll(0, MILLISECONDS)); |
220 |
> |
public void testTimedPoll0() { testTimedPoll0(false); } |
221 |
> |
public void testTimedPoll0_fair() { testTimedPoll0(true); } |
222 |
> |
public void testTimedPoll0(boolean fair) { |
223 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
224 |
> |
try { assertNull(q.poll(0, MILLISECONDS)); } |
225 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
226 |
|
} |
227 |
|
|
228 |
|
/** |
229 |
< |
* timed pool with nonzero timeout times out if no active taker |
229 |
> |
* timed poll with nonzero timeout times out if no active putter |
230 |
|
*/ |
231 |
< |
public void testTimedPoll() throws InterruptedException { |
232 |
< |
SynchronousQueue q = new SynchronousQueue(); |
233 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
231 |
> |
public void testTimedPoll() { testTimedPoll(false); } |
232 |
> |
public void testTimedPoll_fair() { testTimedPoll(true); } |
233 |
> |
public void testTimedPoll(boolean fair) { |
234 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
235 |
> |
long startTime = System.nanoTime(); |
236 |
> |
try { assertNull(q.poll(timeoutMillis(), MILLISECONDS)); } |
237 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
238 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
239 |
|
} |
240 |
|
|
241 |
|
/** |
242 |
< |
* Interrupted timed poll throws InterruptedException instead of |
243 |
< |
* returning timeout status |
242 |
> |
* timed poll before a delayed offer times out, returning null; |
243 |
> |
* after offer succeeds; on interruption throws |
244 |
|
*/ |
245 |
< |
public void testInterruptedTimedPoll() throws InterruptedException { |
246 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
247 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
245 |
> |
public void testTimedPollWithOffer() { testTimedPollWithOffer(false); } |
246 |
> |
public void testTimedPollWithOffer_fair() { testTimedPollWithOffer(true); } |
247 |
> |
public void testTimedPollWithOffer(boolean fair) { |
248 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
249 |
> |
final CountDownLatch pleaseOffer = new CountDownLatch(1); |
250 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
251 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
252 |
|
public void realRun() throws InterruptedException { |
253 |
< |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
254 |
< |
}}); |
255 |
< |
|
332 |
< |
t.start(); |
333 |
< |
Thread.sleep(SHORT_DELAY_MS); |
334 |
< |
t.interrupt(); |
335 |
< |
t.join(); |
336 |
< |
} |
253 |
> |
long startTime = System.nanoTime(); |
254 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
255 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
256 |
|
|
257 |
< |
/** |
258 |
< |
* Interrupted timed poll throws InterruptedException instead of |
259 |
< |
* returning timeout status |
341 |
< |
*/ |
342 |
< |
public void testFairInterruptedTimedPoll() throws InterruptedException { |
343 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
344 |
< |
public void realRun() throws InterruptedException { |
345 |
< |
SynchronousQueue q = new SynchronousQueue(true); |
346 |
< |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
347 |
< |
}}); |
257 |
> |
pleaseOffer.countDown(); |
258 |
> |
startTime = System.nanoTime(); |
259 |
> |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
260 |
|
|
261 |
< |
t.start(); |
262 |
< |
Thread.sleep(SHORT_DELAY_MS); |
263 |
< |
t.interrupt(); |
264 |
< |
t.join(); |
265 |
< |
} |
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 |
< |
/** |
356 |
< |
* timed poll before a delayed offer fails; after offer succeeds; |
357 |
< |
* on interruption throws |
358 |
< |
*/ |
359 |
< |
public void testFairTimedPollWithOffer() throws InterruptedException { |
360 |
< |
final SynchronousQueue q = new SynchronousQueue(true); |
361 |
< |
Thread t = new Thread(new CheckedRunnable() { |
362 |
< |
public void realRun() throws InterruptedException { |
268 |
> |
pleaseInterrupt.countDown(); |
269 |
|
try { |
364 |
– |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
365 |
– |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
270 |
|
q.poll(LONG_DELAY_MS, MILLISECONDS); |
271 |
< |
threadShouldThrow(); |
271 |
> |
shouldThrow(); |
272 |
|
} catch (InterruptedException success) {} |
273 |
+ |
assertFalse(Thread.interrupted()); |
274 |
+ |
|
275 |
+ |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
276 |
|
}}); |
277 |
|
|
278 |
< |
t.start(); |
279 |
< |
Thread.sleep(SMALL_DELAY_MS); |
280 |
< |
assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS)); |
278 |
> |
await(pleaseOffer); |
279 |
> |
long startTime = System.nanoTime(); |
280 |
> |
try { assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); } |
281 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
282 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
283 |
> |
|
284 |
> |
await(pleaseInterrupt); |
285 |
> |
assertThreadStaysAlive(t); |
286 |
|
t.interrupt(); |
287 |
< |
t.join(); |
287 |
> |
awaitTermination(t); |
288 |
|
} |
289 |
|
|
378 |
– |
|
290 |
|
/** |
291 |
< |
* peek returns null |
291 |
> |
* peek() returns null if no active putter |
292 |
|
*/ |
293 |
< |
public void testPeek() { |
294 |
< |
SynchronousQueue q = new SynchronousQueue(); |
293 |
> |
public void testPeek() { testPeek(false); } |
294 |
> |
public void testPeek_fair() { testPeek(true); } |
295 |
> |
public void testPeek(boolean fair) { |
296 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
297 |
|
assertNull(q.peek()); |
298 |
|
} |
299 |
|
|
300 |
|
/** |
301 |
< |
* element throws NSEE |
301 |
> |
* element() throws NoSuchElementException if no active putter |
302 |
|
*/ |
303 |
< |
public void testElement() { |
304 |
< |
SynchronousQueue q = new SynchronousQueue(); |
303 |
> |
public void testElement() { testElement(false); } |
304 |
> |
public void testElement_fair() { testElement(true); } |
305 |
> |
public void testElement(boolean fair) { |
306 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
307 |
|
try { |
308 |
|
q.element(); |
309 |
|
shouldThrow(); |
311 |
|
} |
312 |
|
|
313 |
|
/** |
314 |
< |
* remove throws NSEE if no active taker |
314 |
> |
* remove() throws NoSuchElementException if no active putter |
315 |
|
*/ |
316 |
< |
public void testRemove() { |
317 |
< |
SynchronousQueue q = new SynchronousQueue(); |
316 |
> |
public void testRemove() { testRemove(false); } |
317 |
> |
public void testRemove_fair() { testRemove(true); } |
318 |
> |
public void testRemove(boolean fair) { |
319 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
320 |
|
try { |
321 |
|
q.remove(); |
322 |
|
shouldThrow(); |
324 |
|
} |
325 |
|
|
326 |
|
/** |
410 |
– |
* remove(x) returns false |
411 |
– |
*/ |
412 |
– |
public void testRemoveElement() { |
413 |
– |
SynchronousQueue q = new SynchronousQueue(); |
414 |
– |
assertFalse(q.remove(zero)); |
415 |
– |
assertTrue(q.isEmpty()); |
416 |
– |
} |
417 |
– |
|
418 |
– |
/** |
327 |
|
* contains returns false |
328 |
|
*/ |
329 |
< |
public void testContains() { |
330 |
< |
SynchronousQueue q = new SynchronousQueue(); |
329 |
> |
public void testContains() { testContains(false); } |
330 |
> |
public void testContains_fair() { testContains(true); } |
331 |
> |
public void testContains(boolean fair) { |
332 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
333 |
|
assertFalse(q.contains(zero)); |
334 |
|
} |
335 |
|
|
336 |
|
/** |
337 |
|
* clear ensures isEmpty |
338 |
|
*/ |
339 |
< |
public void testClear() { |
340 |
< |
SynchronousQueue q = new SynchronousQueue(); |
339 |
> |
public void testClear() { testClear(false); } |
340 |
> |
public void testClear_fair() { testClear(true); } |
341 |
> |
public void testClear(boolean fair) { |
342 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
343 |
|
q.clear(); |
344 |
|
assertTrue(q.isEmpty()); |
345 |
|
} |
347 |
|
/** |
348 |
|
* containsAll returns false unless empty |
349 |
|
*/ |
350 |
< |
public void testContainsAll() { |
351 |
< |
SynchronousQueue q = new SynchronousQueue(); |
350 |
> |
public void testContainsAll() { testContainsAll(false); } |
351 |
> |
public void testContainsAll_fair() { testContainsAll(true); } |
352 |
> |
public void testContainsAll(boolean fair) { |
353 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
354 |
|
Integer[] empty = new Integer[0]; |
355 |
|
assertTrue(q.containsAll(Arrays.asList(empty))); |
356 |
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
360 |
|
/** |
361 |
|
* retainAll returns false |
362 |
|
*/ |
363 |
< |
public void testRetainAll() { |
364 |
< |
SynchronousQueue q = new SynchronousQueue(); |
363 |
> |
public void testRetainAll() { testRetainAll(false); } |
364 |
> |
public void testRetainAll_fair() { testRetainAll(true); } |
365 |
> |
public void testRetainAll(boolean fair) { |
366 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
367 |
|
Integer[] empty = new Integer[0]; |
368 |
|
assertFalse(q.retainAll(Arrays.asList(empty))); |
369 |
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
373 |
|
/** |
374 |
|
* removeAll returns false |
375 |
|
*/ |
376 |
< |
public void testRemoveAll() { |
377 |
< |
SynchronousQueue q = new SynchronousQueue(); |
376 |
> |
public void testRemoveAll() { testRemoveAll(false); } |
377 |
> |
public void testRemoveAll_fair() { testRemoveAll(true); } |
378 |
> |
public void testRemoveAll(boolean fair) { |
379 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
380 |
|
Integer[] empty = new Integer[0]; |
381 |
|
assertFalse(q.removeAll(Arrays.asList(empty))); |
382 |
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
383 |
|
assertFalse(q.containsAll(Arrays.asList(ints))); |
384 |
|
} |
385 |
|
|
468 |
– |
|
386 |
|
/** |
387 |
|
* toArray is empty |
388 |
|
*/ |
389 |
< |
public void testToArray() { |
390 |
< |
SynchronousQueue q = new SynchronousQueue(); |
389 |
> |
public void testToArray() { testToArray(false); } |
390 |
> |
public void testToArray_fair() { testToArray(true); } |
391 |
> |
public void testToArray(boolean fair) { |
392 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
393 |
|
Object[] o = q.toArray(); |
394 |
< |
assertEquals(o.length, 0); |
394 |
> |
assertEquals(0, o.length); |
395 |
|
} |
396 |
|
|
397 |
|
/** |
398 |
< |
* toArray(a) is nulled at position 0 |
398 |
> |
* toArray(Integer array) returns its argument with the first |
399 |
> |
* element (if present) nulled out |
400 |
|
*/ |
401 |
< |
public void testToArray2() { |
402 |
< |
SynchronousQueue q = new SynchronousQueue(); |
403 |
< |
Integer[] ints = new Integer[1]; |
404 |
< |
assertNull(ints[0]); |
401 |
> |
public void testToArray2() { testToArray2(false); } |
402 |
> |
public void testToArray2_fair() { testToArray2(true); } |
403 |
> |
public void testToArray2(boolean fair) { |
404 |
> |
final SynchronousQueue<Integer> q |
405 |
> |
= new SynchronousQueue<Integer>(fair); |
406 |
> |
Integer[] a; |
407 |
> |
|
408 |
> |
a = new Integer[0]; |
409 |
> |
assertSame(a, q.toArray(a)); |
410 |
> |
|
411 |
> |
a = new Integer[3]; |
412 |
> |
Arrays.fill(a, 42); |
413 |
> |
assertSame(a, q.toArray(a)); |
414 |
> |
assertNull(a[0]); |
415 |
> |
for (int i = 1; i < a.length; i++) |
416 |
> |
assertEquals(42, (int) a[i]); |
417 |
|
} |
418 |
|
|
419 |
|
/** |
420 |
|
* toArray(null) throws NPE |
421 |
|
*/ |
422 |
< |
public void testToArray_BadArg() { |
423 |
< |
SynchronousQueue q = new SynchronousQueue(); |
422 |
> |
public void testToArray_null() { testToArray_null(false); } |
423 |
> |
public void testToArray_null_fair() { testToArray_null(true); } |
424 |
> |
public void testToArray_null(boolean fair) { |
425 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
426 |
|
try { |
427 |
< |
Object o[] = q.toArray(null); |
427 |
> |
Object[] o = q.toArray(null); |
428 |
|
shouldThrow(); |
429 |
|
} catch (NullPointerException success) {} |
430 |
|
} |
431 |
|
|
498 |
– |
|
432 |
|
/** |
433 |
|
* iterator does not traverse any elements |
434 |
|
*/ |
435 |
< |
public void testIterator() { |
436 |
< |
SynchronousQueue q = new SynchronousQueue(); |
437 |
< |
Iterator it = q.iterator(); |
438 |
< |
assertFalse(it.hasNext()); |
506 |
< |
try { |
507 |
< |
Object x = it.next(); |
508 |
< |
shouldThrow(); |
509 |
< |
} catch (NoSuchElementException success) {} |
435 |
> |
public void testIterator() { testIterator(false); } |
436 |
> |
public void testIterator_fair() { testIterator(true); } |
437 |
> |
public void testIterator(boolean fair) { |
438 |
> |
assertIteratorExhausted(new SynchronousQueue(fair).iterator()); |
439 |
|
} |
440 |
|
|
441 |
|
/** |
442 |
|
* iterator remove throws ISE |
443 |
|
*/ |
444 |
< |
public void testIteratorRemove() { |
445 |
< |
SynchronousQueue q = new SynchronousQueue(); |
444 |
> |
public void testIteratorRemove() { testIteratorRemove(false); } |
445 |
> |
public void testIteratorRemove_fair() { testIteratorRemove(true); } |
446 |
> |
public void testIteratorRemove(boolean fair) { |
447 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
448 |
|
Iterator it = q.iterator(); |
449 |
|
try { |
450 |
|
it.remove(); |
455 |
|
/** |
456 |
|
* toString returns a non-null string |
457 |
|
*/ |
458 |
< |
public void testToString() { |
459 |
< |
SynchronousQueue q = new SynchronousQueue(); |
458 |
> |
public void testToString() { testToString(false); } |
459 |
> |
public void testToString_fair() { testToString(true); } |
460 |
> |
public void testToString(boolean fair) { |
461 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
462 |
|
String s = q.toString(); |
463 |
|
assertNotNull(s); |
464 |
|
} |
465 |
|
|
533 |
– |
|
466 |
|
/** |
467 |
|
* offer transfers elements across Executor tasks |
468 |
|
*/ |
469 |
< |
public void testOfferInExecutor() { |
470 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
471 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
472 |
< |
|
473 |
< |
executor.execute(new CheckedRunnable() { |
474 |
< |
public void realRun() throws InterruptedException { |
475 |
< |
assertFalse(q.offer(one)); |
476 |
< |
assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS)); |
477 |
< |
assertEquals(0, q.remainingCapacity()); |
478 |
< |
}}); |
479 |
< |
|
480 |
< |
executor.execute(new CheckedRunnable() { |
481 |
< |
public void realRun() throws InterruptedException { |
482 |
< |
Thread.sleep(SMALL_DELAY_MS); |
483 |
< |
assertSame(one, q.take()); |
484 |
< |
}}); |
485 |
< |
|
486 |
< |
joinPool(executor); |
469 |
> |
public void testOfferInExecutor() { testOfferInExecutor(false); } |
470 |
> |
public void testOfferInExecutor_fair() { testOfferInExecutor(true); } |
471 |
> |
public void testOfferInExecutor(boolean fair) { |
472 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
473 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
474 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
475 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
476 |
> |
|
477 |
> |
executor.execute(new CheckedRunnable() { |
478 |
> |
public void realRun() throws InterruptedException { |
479 |
> |
assertFalse(q.offer(one)); |
480 |
> |
threadsStarted.await(); |
481 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
482 |
> |
assertEquals(0, q.remainingCapacity()); |
483 |
> |
}}); |
484 |
> |
|
485 |
> |
executor.execute(new CheckedRunnable() { |
486 |
> |
public void realRun() throws InterruptedException { |
487 |
> |
threadsStarted.await(); |
488 |
> |
assertSame(one, q.take()); |
489 |
> |
}}); |
490 |
> |
} |
491 |
|
} |
492 |
|
|
493 |
|
/** |
494 |
< |
* poll retrieves elements across Executor threads |
494 |
> |
* timed poll retrieves elements across Executor threads |
495 |
|
*/ |
496 |
< |
public void testPollInExecutor() { |
497 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
498 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
499 |
< |
executor.execute(new CheckedRunnable() { |
500 |
< |
public void realRun() throws InterruptedException { |
501 |
< |
assertNull(q.poll()); |
502 |
< |
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
503 |
< |
assertTrue(q.isEmpty()); |
504 |
< |
}}); |
505 |
< |
|
506 |
< |
executor.execute(new CheckedRunnable() { |
507 |
< |
public void realRun() throws InterruptedException { |
508 |
< |
Thread.sleep(SHORT_DELAY_MS); |
509 |
< |
q.put(one); |
510 |
< |
}}); |
511 |
< |
|
512 |
< |
joinPool(executor); |
496 |
> |
public void testPollInExecutor() { testPollInExecutor(false); } |
497 |
> |
public void testPollInExecutor_fair() { testPollInExecutor(true); } |
498 |
> |
public void testPollInExecutor(boolean fair) { |
499 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
500 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
501 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
502 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
503 |
> |
executor.execute(new CheckedRunnable() { |
504 |
> |
public void realRun() throws InterruptedException { |
505 |
> |
assertNull(q.poll()); |
506 |
> |
threadsStarted.await(); |
507 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
508 |
> |
assertTrue(q.isEmpty()); |
509 |
> |
}}); |
510 |
> |
|
511 |
> |
executor.execute(new CheckedRunnable() { |
512 |
> |
public void realRun() throws InterruptedException { |
513 |
> |
threadsStarted.await(); |
514 |
> |
q.put(one); |
515 |
> |
}}); |
516 |
> |
} |
517 |
|
} |
518 |
|
|
519 |
|
/** |
520 |
|
* a deserialized serialized queue is usable |
521 |
|
*/ |
522 |
< |
public void testSerialization() throws Exception { |
523 |
< |
SynchronousQueue q = new SynchronousQueue(); |
524 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
525 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
526 |
< |
out.writeObject(q); |
527 |
< |
out.close(); |
528 |
< |
|
529 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
530 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
531 |
< |
SynchronousQueue r = (SynchronousQueue)in.readObject(); |
532 |
< |
assertEquals(q.size(), r.size()); |
533 |
< |
while (!q.isEmpty()) |
534 |
< |
assertEquals(q.remove(), r.remove()); |
535 |
< |
} |
536 |
< |
|
537 |
< |
/** |
598 |
< |
* drainTo(null) throws NPE |
599 |
< |
*/ |
600 |
< |
public void testDrainToNull() { |
601 |
< |
SynchronousQueue q = new SynchronousQueue(); |
602 |
< |
try { |
603 |
< |
q.drainTo(null); |
604 |
< |
shouldThrow(); |
605 |
< |
} catch (NullPointerException success) {} |
606 |
< |
} |
607 |
< |
|
608 |
< |
/** |
609 |
< |
* drainTo(this) throws IAE |
610 |
< |
*/ |
611 |
< |
public void testDrainToSelf() { |
612 |
< |
SynchronousQueue q = new SynchronousQueue(); |
613 |
< |
try { |
614 |
< |
q.drainTo(q); |
615 |
< |
shouldThrow(); |
616 |
< |
} catch (IllegalArgumentException success) {} |
522 |
> |
public void testSerialization() { |
523 |
> |
final SynchronousQueue x = new SynchronousQueue(); |
524 |
> |
final SynchronousQueue y = new SynchronousQueue(false); |
525 |
> |
final SynchronousQueue z = new SynchronousQueue(true); |
526 |
> |
assertSerialEquals(x, y); |
527 |
> |
assertNotSerialEquals(x, z); |
528 |
> |
SynchronousQueue[] qs = { x, y, z }; |
529 |
> |
for (SynchronousQueue q : qs) { |
530 |
> |
SynchronousQueue clone = serialClone(q); |
531 |
> |
assertNotSame(q, clone); |
532 |
> |
assertSerialEquals(q, clone); |
533 |
> |
assertTrue(clone.isEmpty()); |
534 |
> |
assertEquals(0, clone.size()); |
535 |
> |
assertEquals(0, clone.remainingCapacity()); |
536 |
> |
assertFalse(clone.offer(zero)); |
537 |
> |
} |
538 |
|
} |
539 |
|
|
540 |
|
/** |
541 |
|
* drainTo(c) of empty queue doesn't transfer elements |
542 |
|
*/ |
543 |
< |
public void testDrainTo() { |
544 |
< |
SynchronousQueue q = new SynchronousQueue(); |
543 |
> |
public void testDrainTo() { testDrainTo(false); } |
544 |
> |
public void testDrainTo_fair() { testDrainTo(true); } |
545 |
> |
public void testDrainTo(boolean fair) { |
546 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
547 |
|
ArrayList l = new ArrayList(); |
548 |
|
q.drainTo(l); |
549 |
< |
assertEquals(q.size(), 0); |
550 |
< |
assertEquals(l.size(), 0); |
549 |
> |
assertEquals(0, q.size()); |
550 |
> |
assertEquals(0, l.size()); |
551 |
|
} |
552 |
|
|
553 |
|
/** |
554 |
|
* drainTo empties queue, unblocking a waiting put. |
555 |
|
*/ |
556 |
< |
public void testDrainToWithActivePut() throws InterruptedException { |
557 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
558 |
< |
Thread t = new Thread(new CheckedRunnable() { |
556 |
> |
public void testDrainToWithActivePut() { testDrainToWithActivePut(false); } |
557 |
> |
public void testDrainToWithActivePut_fair() { testDrainToWithActivePut(true); } |
558 |
> |
public void testDrainToWithActivePut(boolean fair) { |
559 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
560 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
561 |
|
public void realRun() throws InterruptedException { |
562 |
< |
q.put(new Integer(1)); |
562 |
> |
q.put(one); |
563 |
|
}}); |
564 |
|
|
640 |
– |
t.start(); |
565 |
|
ArrayList l = new ArrayList(); |
566 |
< |
Thread.sleep(SHORT_DELAY_MS); |
567 |
< |
q.drainTo(l); |
568 |
< |
assertTrue(l.size() <= 1); |
569 |
< |
if (l.size() > 0) |
570 |
< |
assertEquals(l.get(0), new Integer(1)); |
571 |
< |
t.join(); |
572 |
< |
assertTrue(l.size() <= 1); |
573 |
< |
} |
574 |
< |
|
575 |
< |
/** |
652 |
< |
* drainTo(null, n) throws NPE |
653 |
< |
*/ |
654 |
< |
public void testDrainToNullN() { |
655 |
< |
SynchronousQueue q = new SynchronousQueue(); |
656 |
< |
try { |
657 |
< |
q.drainTo(null, 0); |
658 |
< |
shouldThrow(); |
659 |
< |
} catch (NullPointerException success) {} |
660 |
< |
} |
661 |
< |
|
662 |
< |
/** |
663 |
< |
* drainTo(this, n) throws IAE |
664 |
< |
*/ |
665 |
< |
public void testDrainToSelfN() { |
666 |
< |
SynchronousQueue q = new SynchronousQueue(); |
667 |
< |
try { |
668 |
< |
q.drainTo(q, 0); |
669 |
< |
shouldThrow(); |
670 |
< |
} catch (IllegalArgumentException success) {} |
566 |
> |
long startTime = System.nanoTime(); |
567 |
> |
while (l.isEmpty()) { |
568 |
> |
q.drainTo(l); |
569 |
> |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
570 |
> |
fail("timed out"); |
571 |
> |
Thread.yield(); |
572 |
> |
} |
573 |
> |
assertTrue(l.size() == 1); |
574 |
> |
assertSame(one, l.get(0)); |
575 |
> |
awaitTermination(t); |
576 |
|
} |
577 |
|
|
578 |
|
/** |
580 |
|
*/ |
581 |
|
public void testDrainToN() throws InterruptedException { |
582 |
|
final SynchronousQueue q = new SynchronousQueue(); |
583 |
< |
Thread t1 = new Thread(new CheckedRunnable() { |
583 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
584 |
|
public void realRun() throws InterruptedException { |
585 |
|
q.put(one); |
586 |
|
}}); |
587 |
|
|
588 |
< |
Thread t2 = new Thread(new CheckedRunnable() { |
588 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
589 |
|
public void realRun() throws InterruptedException { |
590 |
|
q.put(two); |
591 |
|
}}); |
592 |
|
|
688 |
– |
t1.start(); |
689 |
– |
t2.start(); |
593 |
|
ArrayList l = new ArrayList(); |
594 |
< |
Thread.sleep(SHORT_DELAY_MS); |
595 |
< |
q.drainTo(l, 1); |
594 |
> |
int drained; |
595 |
> |
while ((drained = q.drainTo(l, 1)) == 0) Thread.yield(); |
596 |
> |
assertEquals(1, drained); |
597 |
|
assertEquals(1, l.size()); |
598 |
< |
q.drainTo(l, 1); |
598 |
> |
while ((drained = q.drainTo(l, 1)) == 0) Thread.yield(); |
599 |
> |
assertEquals(1, drained); |
600 |
|
assertEquals(2, l.size()); |
601 |
|
assertTrue(l.contains(one)); |
602 |
|
assertTrue(l.contains(two)); |
603 |
< |
t1.join(); |
604 |
< |
t2.join(); |
603 |
> |
awaitTermination(t1); |
604 |
> |
awaitTermination(t2); |
605 |
> |
} |
606 |
> |
|
607 |
> |
/** |
608 |
> |
* remove(null), contains(null) always return false |
609 |
> |
*/ |
610 |
> |
public void testNeverContainsNull() { |
611 |
> |
Collection<?> q = new SynchronousQueue(); |
612 |
> |
assertFalse(q.contains(null)); |
613 |
> |
assertFalse(q.remove(null)); |
614 |
|
} |
615 |
|
|
616 |
|
} |