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dl |
1.1 |
/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* Expert Group and released to the public domain, as explained at |
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jsr166 |
1.44 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
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dl |
1.1 |
* Other contributors include John Vint |
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*/ |
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jsr166 |
1.55 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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10 |
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import java.util.ArrayList; |
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jsr166 |
1.48 |
import java.util.Arrays; |
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jsr166 |
1.47 |
import java.util.Collection; |
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dl |
1.1 |
import java.util.Iterator; |
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jsr166 |
1.12 |
import java.util.List; |
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dl |
1.1 |
import java.util.NoSuchElementException; |
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jsr166 |
1.48 |
import java.util.Queue; |
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jsr166 |
1.47 |
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.LinkedTransferQueue; |
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jsr166 |
1.55 |
|
23 |
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import junit.framework.Test; |
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dl |
1.1 |
|
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jsr166 |
1.10 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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dl |
1.1 |
public class LinkedTransferQueueTest extends JSR166TestCase { |
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jsr166 |
1.25 |
public static class Generic extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new LinkedTransferQueue(); |
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} |
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} |
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dl |
1.1 |
public static void main(String[] args) { |
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jsr166 |
1.59 |
main(suite(), args); |
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dl |
1.1 |
} |
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public static Test suite() { |
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jsr166 |
1.25 |
return newTestSuite(LinkedTransferQueueTest.class, |
40 |
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new Generic().testSuite()); |
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dl |
1.1 |
} |
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|
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jsr166 |
1.3 |
/** |
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jsr166 |
1.7 |
* Constructor builds new queue with size being zero and empty |
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* being true |
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dl |
1.1 |
*/ |
47 |
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public void testConstructor1() { |
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assertEquals(0, new LinkedTransferQueue().size()); |
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assertTrue(new LinkedTransferQueue().isEmpty()); |
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} |
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jsr166 |
1.3 |
/** |
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jsr166 |
1.7 |
* Initializing constructor with null collection throws |
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* NullPointerException |
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dl |
1.1 |
*/ |
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public void testConstructor2() { |
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try { |
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new LinkedTransferQueue(null); |
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shouldThrow(); |
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jsr166 |
1.17 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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/** |
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jsr166 |
1.7 |
* Initializing from Collection of null elements throws |
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* NullPointerException |
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dl |
1.1 |
*/ |
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public void testConstructor3() { |
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jsr166 |
1.47 |
Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
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dl |
1.1 |
try { |
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jsr166 |
1.47 |
new LinkedTransferQueue(elements); |
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dl |
1.1 |
shouldThrow(); |
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jsr166 |
1.17 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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jsr166 |
1.3 |
|
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/** |
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dl |
1.1 |
* Initializing constructor with a collection containing some null elements |
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jsr166 |
1.5 |
* throws NullPointerException |
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dl |
1.1 |
*/ |
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public void testConstructor4() { |
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jsr166 |
1.47 |
Integer[] ints = new Integer[SIZE]; |
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jsr166 |
1.61 |
for (int i = 0; i < SIZE - 1; ++i) |
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jsr166 |
1.47 |
ints[i] = i; |
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Collection<Integer> elements = Arrays.asList(ints); |
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dl |
1.1 |
try { |
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jsr166 |
1.47 |
new LinkedTransferQueue(elements); |
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dl |
1.1 |
shouldThrow(); |
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jsr166 |
1.17 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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|
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jsr166 |
1.3 |
/** |
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dl |
1.1 |
* Queue contains all elements of the collection it is initialized by |
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*/ |
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public void testConstructor5() { |
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jsr166 |
1.12 |
Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; ++i) { |
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ints[i] = i; |
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} |
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List intList = Arrays.asList(ints); |
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LinkedTransferQueue q |
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= new LinkedTransferQueue(intList); |
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assertEquals(q.size(), intList.size()); |
102 |
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assertEquals(q.toString(), intList.toString()); |
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assertTrue(Arrays.equals(q.toArray(), |
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intList.toArray())); |
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assertTrue(Arrays.equals(q.toArray(new Object[0]), |
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intList.toArray(new Object[0]))); |
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assertTrue(Arrays.equals(q.toArray(new Object[SIZE]), |
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intList.toArray(new Object[SIZE]))); |
109 |
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for (int i = 0; i < SIZE; ++i) { |
110 |
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assertEquals(ints[i], q.poll()); |
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dl |
1.1 |
} |
112 |
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} |
113 |
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/** |
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jsr166 |
1.12 |
* remainingCapacity() always returns Integer.MAX_VALUE |
116 |
dl |
1.1 |
*/ |
117 |
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public void testRemainingCapacity() { |
118 |
jsr166 |
1.58 |
BlockingQueue q = populatedQueue(SIZE); |
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dl |
1.1 |
for (int i = 0; i < SIZE; ++i) { |
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jsr166 |
1.5 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
121 |
dl |
1.1 |
assertEquals(SIZE - i, q.size()); |
122 |
jsr166 |
1.58 |
assertEquals(i, q.remove()); |
123 |
dl |
1.1 |
} |
124 |
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for (int i = 0; i < SIZE; ++i) { |
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jsr166 |
1.5 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
126 |
dl |
1.1 |
assertEquals(i, q.size()); |
127 |
jsr166 |
1.58 |
assertTrue(q.add(i)); |
128 |
dl |
1.1 |
} |
129 |
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} |
130 |
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131 |
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/** |
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jsr166 |
1.5 |
* addAll(this) throws IllegalArgumentException |
133 |
dl |
1.1 |
*/ |
134 |
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public void testAddAllSelf() { |
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jsr166 |
1.60 |
LinkedTransferQueue q = populatedQueue(SIZE); |
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dl |
1.1 |
try { |
137 |
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q.addAll(q); |
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shouldThrow(); |
139 |
jsr166 |
1.17 |
} catch (IllegalArgumentException success) {} |
140 |
dl |
1.1 |
} |
141 |
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142 |
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/** |
143 |
jsr166 |
1.7 |
* addAll of a collection with any null elements throws |
144 |
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* NullPointerException after possibly adding some elements |
145 |
dl |
1.1 |
*/ |
146 |
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public void testAddAll3() { |
147 |
jsr166 |
1.60 |
LinkedTransferQueue q = new LinkedTransferQueue(); |
148 |
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Integer[] ints = new Integer[SIZE]; |
149 |
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for (int i = 0; i < SIZE - 1; ++i) |
150 |
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ints[i] = i; |
151 |
dl |
1.1 |
try { |
152 |
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q.addAll(Arrays.asList(ints)); |
153 |
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shouldThrow(); |
154 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
155 |
dl |
1.1 |
} |
156 |
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157 |
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/** |
158 |
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* Queue contains all elements, in traversal order, of successful addAll |
159 |
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*/ |
160 |
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public void testAddAll5() { |
161 |
jsr166 |
1.5 |
Integer[] empty = new Integer[0]; |
162 |
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Integer[] ints = new Integer[SIZE]; |
163 |
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for (int i = 0; i < SIZE; ++i) { |
164 |
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ints[i] = i; |
165 |
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} |
166 |
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LinkedTransferQueue q = new LinkedTransferQueue(); |
167 |
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assertFalse(q.addAll(Arrays.asList(empty))); |
168 |
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assertTrue(q.addAll(Arrays.asList(ints))); |
169 |
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for (int i = 0; i < SIZE; ++i) { |
170 |
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assertEquals(ints[i], q.poll()); |
171 |
dl |
1.1 |
} |
172 |
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} |
173 |
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174 |
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/** |
175 |
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* all elements successfully put are contained |
176 |
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*/ |
177 |
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public void testPut() { |
178 |
jsr166 |
1.5 |
LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>(); |
179 |
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for (int i = 0; i < SIZE; ++i) { |
180 |
jsr166 |
1.51 |
assertEquals(i, q.size()); |
181 |
jsr166 |
1.5 |
q.put(i); |
182 |
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assertTrue(q.contains(i)); |
183 |
dl |
1.1 |
} |
184 |
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} |
185 |
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186 |
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/** |
187 |
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* take retrieves elements in FIFO order |
188 |
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*/ |
189 |
jsr166 |
1.5 |
public void testTake() throws InterruptedException { |
190 |
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LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
191 |
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for (int i = 0; i < SIZE; ++i) { |
192 |
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assertEquals(i, (int) q.take()); |
193 |
dl |
1.1 |
} |
194 |
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} |
195 |
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196 |
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/** |
197 |
jsr166 |
1.28 |
* take removes existing elements until empty, then blocks interruptibly |
198 |
dl |
1.1 |
*/ |
199 |
jsr166 |
1.5 |
public void testBlockingTake() throws InterruptedException { |
200 |
jsr166 |
1.46 |
final BlockingQueue q = populatedQueue(SIZE); |
201 |
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final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
202 |
jsr166 |
1.31 |
Thread t = newStartedThread(new CheckedRunnable() { |
203 |
jsr166 |
1.19 |
public void realRun() throws InterruptedException { |
204 |
jsr166 |
1.7 |
for (int i = 0; i < SIZE; ++i) { |
205 |
jsr166 |
1.46 |
assertEquals(i, q.take()); |
206 |
dl |
1.1 |
} |
207 |
jsr166 |
1.46 |
|
208 |
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Thread.currentThread().interrupt(); |
209 |
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try { |
210 |
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q.take(); |
211 |
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shouldThrow(); |
212 |
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} catch (InterruptedException success) {} |
213 |
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assertFalse(Thread.interrupted()); |
214 |
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215 |
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pleaseInterrupt.countDown(); |
216 |
jsr166 |
1.19 |
try { |
217 |
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q.take(); |
218 |
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shouldThrow(); |
219 |
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} catch (InterruptedException success) {} |
220 |
jsr166 |
1.46 |
assertFalse(Thread.interrupted()); |
221 |
jsr166 |
1.5 |
}}); |
222 |
jsr166 |
1.19 |
|
223 |
jsr166 |
1.46 |
await(pleaseInterrupt); |
224 |
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assertThreadStaysAlive(t); |
225 |
jsr166 |
1.5 |
t.interrupt(); |
226 |
jsr166 |
1.46 |
awaitTermination(t); |
227 |
dl |
1.1 |
} |
228 |
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|
229 |
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/** |
230 |
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* poll succeeds unless empty |
231 |
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*/ |
232 |
jsr166 |
1.12 |
public void testPoll() throws InterruptedException { |
233 |
jsr166 |
1.5 |
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
234 |
dl |
1.1 |
for (int i = 0; i < SIZE; ++i) { |
235 |
jsr166 |
1.5 |
assertEquals(i, (int) q.poll()); |
236 |
dl |
1.1 |
} |
237 |
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assertNull(q.poll()); |
238 |
jsr166 |
1.12 |
checkEmpty(q); |
239 |
dl |
1.1 |
} |
240 |
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|
241 |
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/** |
242 |
jsr166 |
1.30 |
* timed poll with zero timeout succeeds when non-empty, else times out |
243 |
dl |
1.1 |
*/ |
244 |
jsr166 |
1.5 |
public void testTimedPoll0() throws InterruptedException { |
245 |
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LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
246 |
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for (int i = 0; i < SIZE; ++i) { |
247 |
jsr166 |
1.7 |
assertEquals(i, (int) q.poll(0, MILLISECONDS)); |
248 |
dl |
1.1 |
} |
249 |
jsr166 |
1.7 |
assertNull(q.poll(0, MILLISECONDS)); |
250 |
jsr166 |
1.12 |
checkEmpty(q); |
251 |
dl |
1.1 |
} |
252 |
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|
253 |
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/** |
254 |
jsr166 |
1.30 |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
255 |
dl |
1.1 |
*/ |
256 |
jsr166 |
1.5 |
public void testTimedPoll() throws InterruptedException { |
257 |
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LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
258 |
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for (int i = 0; i < SIZE; ++i) { |
259 |
jsr166 |
1.46 |
long startTime = System.nanoTime(); |
260 |
|
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assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
261 |
|
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assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
262 |
|
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} |
263 |
|
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long startTime = System.nanoTime(); |
264 |
|
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assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
265 |
|
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assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
266 |
jsr166 |
1.12 |
checkEmpty(q); |
267 |
dl |
1.1 |
} |
268 |
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|
269 |
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/** |
270 |
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* Interrupted timed poll throws InterruptedException instead of |
271 |
|
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* returning timeout status |
272 |
|
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*/ |
273 |
jsr166 |
1.5 |
public void testInterruptedTimedPoll() throws InterruptedException { |
274 |
jsr166 |
1.31 |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
275 |
|
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final CountDownLatch aboutToWait = new CountDownLatch(1); |
276 |
jsr166 |
1.16 |
Thread t = newStartedThread(new CheckedRunnable() { |
277 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
278 |
jsr166 |
1.7 |
for (int i = 0; i < SIZE; ++i) { |
279 |
jsr166 |
1.12 |
long t0 = System.nanoTime(); |
280 |
jsr166 |
1.23 |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
281 |
jsr166 |
1.35 |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
282 |
dl |
1.1 |
} |
283 |
jsr166 |
1.35 |
long t0 = System.nanoTime(); |
284 |
jsr166 |
1.31 |
aboutToWait.countDown(); |
285 |
jsr166 |
1.16 |
try { |
286 |
jsr166 |
1.31 |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
287 |
jsr166 |
1.17 |
shouldThrow(); |
288 |
jsr166 |
1.35 |
} catch (InterruptedException success) { |
289 |
|
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assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
290 |
|
|
} |
291 |
jsr166 |
1.5 |
}}); |
292 |
jsr166 |
1.17 |
|
293 |
jsr166 |
1.31 |
aboutToWait.await(); |
294 |
|
|
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
295 |
jsr166 |
1.5 |
t.interrupt(); |
296 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
297 |
jsr166 |
1.12 |
checkEmpty(q); |
298 |
dl |
1.1 |
} |
299 |
|
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|
300 |
|
|
/** |
301 |
jsr166 |
1.31 |
* timed poll after thread interrupted throws InterruptedException |
302 |
|
|
* instead of returning timeout status |
303 |
|
|
*/ |
304 |
|
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public void testTimedPollAfterInterrupt() throws InterruptedException { |
305 |
|
|
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
306 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
307 |
|
|
public void realRun() throws InterruptedException { |
308 |
|
|
Thread.currentThread().interrupt(); |
309 |
|
|
for (int i = 0; i < SIZE; ++i) { |
310 |
|
|
long t0 = System.nanoTime(); |
311 |
|
|
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
312 |
jsr166 |
1.35 |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
313 |
jsr166 |
1.31 |
} |
314 |
|
|
try { |
315 |
|
|
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
316 |
|
|
shouldThrow(); |
317 |
|
|
} catch (InterruptedException success) {} |
318 |
|
|
}}); |
319 |
|
|
|
320 |
|
|
awaitTermination(t, MEDIUM_DELAY_MS); |
321 |
|
|
checkEmpty(q); |
322 |
|
|
} |
323 |
|
|
|
324 |
|
|
/** |
325 |
dl |
1.1 |
* peek returns next element, or null if empty |
326 |
|
|
*/ |
327 |
jsr166 |
1.12 |
public void testPeek() throws InterruptedException { |
328 |
jsr166 |
1.5 |
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
329 |
dl |
1.1 |
for (int i = 0; i < SIZE; ++i) { |
330 |
jsr166 |
1.5 |
assertEquals(i, (int) q.peek()); |
331 |
|
|
assertEquals(i, (int) q.poll()); |
332 |
dl |
1.1 |
assertTrue(q.peek() == null || |
333 |
jsr166 |
1.5 |
i != (int) q.peek()); |
334 |
dl |
1.1 |
} |
335 |
|
|
assertNull(q.peek()); |
336 |
jsr166 |
1.12 |
checkEmpty(q); |
337 |
dl |
1.1 |
} |
338 |
|
|
|
339 |
|
|
/** |
340 |
jsr166 |
1.5 |
* element returns next element, or throws NoSuchElementException if empty |
341 |
dl |
1.1 |
*/ |
342 |
jsr166 |
1.12 |
public void testElement() throws InterruptedException { |
343 |
jsr166 |
1.5 |
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
344 |
dl |
1.1 |
for (int i = 0; i < SIZE; ++i) { |
345 |
jsr166 |
1.5 |
assertEquals(i, (int) q.element()); |
346 |
|
|
assertEquals(i, (int) q.poll()); |
347 |
dl |
1.1 |
} |
348 |
|
|
try { |
349 |
|
|
q.element(); |
350 |
|
|
shouldThrow(); |
351 |
jsr166 |
1.17 |
} catch (NoSuchElementException success) {} |
352 |
jsr166 |
1.12 |
checkEmpty(q); |
353 |
dl |
1.1 |
} |
354 |
|
|
|
355 |
|
|
/** |
356 |
jsr166 |
1.5 |
* remove removes next element, or throws NoSuchElementException if empty |
357 |
dl |
1.1 |
*/ |
358 |
jsr166 |
1.12 |
public void testRemove() throws InterruptedException { |
359 |
jsr166 |
1.5 |
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
360 |
dl |
1.1 |
for (int i = 0; i < SIZE; ++i) { |
361 |
jsr166 |
1.5 |
assertEquals(i, (int) q.remove()); |
362 |
dl |
1.1 |
} |
363 |
|
|
try { |
364 |
|
|
q.remove(); |
365 |
|
|
shouldThrow(); |
366 |
jsr166 |
1.17 |
} catch (NoSuchElementException success) {} |
367 |
jsr166 |
1.12 |
checkEmpty(q); |
368 |
dl |
1.1 |
} |
369 |
|
|
|
370 |
|
|
/** |
371 |
|
|
* An add following remove(x) succeeds |
372 |
|
|
*/ |
373 |
jsr166 |
1.5 |
public void testRemoveElementAndAdd() throws InterruptedException { |
374 |
|
|
LinkedTransferQueue q = new LinkedTransferQueue(); |
375 |
|
|
assertTrue(q.add(one)); |
376 |
|
|
assertTrue(q.add(two)); |
377 |
|
|
assertTrue(q.remove(one)); |
378 |
|
|
assertTrue(q.remove(two)); |
379 |
|
|
assertTrue(q.add(three)); |
380 |
jsr166 |
1.23 |
assertSame(q.take(), three); |
381 |
dl |
1.1 |
} |
382 |
|
|
|
383 |
|
|
/** |
384 |
|
|
* contains(x) reports true when elements added but not yet removed |
385 |
|
|
*/ |
386 |
|
|
public void testContains() { |
387 |
jsr166 |
1.5 |
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
388 |
dl |
1.1 |
for (int i = 0; i < SIZE; ++i) { |
389 |
jsr166 |
1.5 |
assertTrue(q.contains(i)); |
390 |
|
|
assertEquals(i, (int) q.poll()); |
391 |
|
|
assertFalse(q.contains(i)); |
392 |
dl |
1.1 |
} |
393 |
|
|
} |
394 |
|
|
|
395 |
|
|
/** |
396 |
|
|
* clear removes all elements |
397 |
|
|
*/ |
398 |
jsr166 |
1.12 |
public void testClear() throws InterruptedException { |
399 |
dl |
1.1 |
LinkedTransferQueue q = populatedQueue(SIZE); |
400 |
|
|
q.clear(); |
401 |
jsr166 |
1.12 |
checkEmpty(q); |
402 |
jsr166 |
1.5 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
403 |
dl |
1.1 |
q.add(one); |
404 |
|
|
assertFalse(q.isEmpty()); |
405 |
jsr166 |
1.12 |
assertEquals(1, q.size()); |
406 |
dl |
1.1 |
assertTrue(q.contains(one)); |
407 |
|
|
q.clear(); |
408 |
jsr166 |
1.12 |
checkEmpty(q); |
409 |
dl |
1.1 |
} |
410 |
|
|
|
411 |
|
|
/** |
412 |
|
|
* containsAll(c) is true when c contains a subset of elements |
413 |
|
|
*/ |
414 |
|
|
public void testContainsAll() { |
415 |
jsr166 |
1.5 |
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
416 |
|
|
LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>(); |
417 |
dl |
1.1 |
for (int i = 0; i < SIZE; ++i) { |
418 |
|
|
assertTrue(q.containsAll(p)); |
419 |
|
|
assertFalse(p.containsAll(q)); |
420 |
jsr166 |
1.5 |
p.add(i); |
421 |
dl |
1.1 |
} |
422 |
|
|
assertTrue(p.containsAll(q)); |
423 |
|
|
} |
424 |
|
|
|
425 |
|
|
/** |
426 |
jsr166 |
1.7 |
* retainAll(c) retains only those elements of c and reports true |
427 |
|
|
* if changed |
428 |
dl |
1.1 |
*/ |
429 |
|
|
public void testRetainAll() { |
430 |
|
|
LinkedTransferQueue q = populatedQueue(SIZE); |
431 |
|
|
LinkedTransferQueue p = populatedQueue(SIZE); |
432 |
|
|
for (int i = 0; i < SIZE; ++i) { |
433 |
|
|
boolean changed = q.retainAll(p); |
434 |
|
|
if (i == 0) { |
435 |
|
|
assertFalse(changed); |
436 |
|
|
} else { |
437 |
|
|
assertTrue(changed); |
438 |
|
|
} |
439 |
|
|
assertTrue(q.containsAll(p)); |
440 |
|
|
assertEquals(SIZE - i, q.size()); |
441 |
|
|
p.remove(); |
442 |
|
|
} |
443 |
|
|
} |
444 |
|
|
|
445 |
|
|
/** |
446 |
jsr166 |
1.7 |
* removeAll(c) removes only those elements of c and reports true |
447 |
|
|
* if changed |
448 |
dl |
1.1 |
*/ |
449 |
|
|
public void testRemoveAll() { |
450 |
|
|
for (int i = 1; i < SIZE; ++i) { |
451 |
|
|
LinkedTransferQueue q = populatedQueue(SIZE); |
452 |
|
|
LinkedTransferQueue p = populatedQueue(i); |
453 |
|
|
assertTrue(q.removeAll(p)); |
454 |
|
|
assertEquals(SIZE - i, q.size()); |
455 |
|
|
for (int j = 0; j < i; ++j) { |
456 |
jsr166 |
1.5 |
assertFalse(q.contains(p.remove())); |
457 |
dl |
1.1 |
} |
458 |
|
|
} |
459 |
|
|
} |
460 |
|
|
|
461 |
|
|
/** |
462 |
jsr166 |
1.38 |
* toArray() contains all elements in FIFO order |
463 |
dl |
1.1 |
*/ |
464 |
jsr166 |
1.38 |
public void testToArray() { |
465 |
dl |
1.1 |
LinkedTransferQueue q = populatedQueue(SIZE); |
466 |
|
|
Object[] o = q.toArray(); |
467 |
jsr166 |
1.5 |
for (int i = 0; i < o.length; i++) { |
468 |
jsr166 |
1.38 |
assertSame(o[i], q.poll()); |
469 |
dl |
1.1 |
} |
470 |
|
|
} |
471 |
|
|
|
472 |
|
|
/** |
473 |
jsr166 |
1.38 |
* toArray(a) contains all elements in FIFO order |
474 |
dl |
1.1 |
*/ |
475 |
jsr166 |
1.38 |
public void testToArray2() { |
476 |
jsr166 |
1.5 |
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
477 |
dl |
1.1 |
Integer[] ints = new Integer[SIZE]; |
478 |
jsr166 |
1.39 |
Integer[] array = q.toArray(ints); |
479 |
|
|
assertSame(ints, array); |
480 |
jsr166 |
1.5 |
for (int i = 0; i < ints.length; i++) { |
481 |
jsr166 |
1.38 |
assertSame(ints[i], q.poll()); |
482 |
dl |
1.1 |
} |
483 |
|
|
} |
484 |
|
|
|
485 |
|
|
/** |
486 |
jsr166 |
1.36 |
* toArray(incompatible array type) throws ArrayStoreException |
487 |
dl |
1.1 |
*/ |
488 |
|
|
public void testToArray1_BadArg() { |
489 |
jsr166 |
1.20 |
LinkedTransferQueue q = populatedQueue(SIZE); |
490 |
dl |
1.1 |
try { |
491 |
jsr166 |
1.36 |
q.toArray(new String[10]); |
492 |
dl |
1.1 |
shouldThrow(); |
493 |
jsr166 |
1.17 |
} catch (ArrayStoreException success) {} |
494 |
dl |
1.1 |
} |
495 |
|
|
|
496 |
|
|
/** |
497 |
|
|
* iterator iterates through all elements |
498 |
|
|
*/ |
499 |
jsr166 |
1.5 |
public void testIterator() throws InterruptedException { |
500 |
dl |
1.1 |
LinkedTransferQueue q = populatedQueue(SIZE); |
501 |
|
|
Iterator it = q.iterator(); |
502 |
jsr166 |
1.57 |
int i; |
503 |
|
|
for (i = 0; it.hasNext(); i++) |
504 |
|
|
assertTrue(q.contains(it.next())); |
505 |
|
|
assertEquals(i, SIZE); |
506 |
|
|
assertIteratorExhausted(it); |
507 |
|
|
|
508 |
|
|
it = q.iterator(); |
509 |
|
|
for (i = 0; it.hasNext(); i++) |
510 |
|
|
assertEquals(it.next(), q.take()); |
511 |
jsr166 |
1.10 |
assertEquals(i, SIZE); |
512 |
jsr166 |
1.57 |
assertIteratorExhausted(it); |
513 |
|
|
} |
514 |
|
|
|
515 |
|
|
/** |
516 |
|
|
* iterator of empty collection has no elements |
517 |
|
|
*/ |
518 |
|
|
public void testEmptyIterator() { |
519 |
|
|
assertIteratorExhausted(new LinkedTransferQueue().iterator()); |
520 |
dl |
1.1 |
} |
521 |
|
|
|
522 |
|
|
/** |
523 |
jsr166 |
1.12 |
* iterator.remove() removes current element |
524 |
dl |
1.1 |
*/ |
525 |
|
|
public void testIteratorRemove() { |
526 |
|
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
527 |
|
|
q.add(two); |
528 |
|
|
q.add(one); |
529 |
|
|
q.add(three); |
530 |
|
|
|
531 |
|
|
Iterator it = q.iterator(); |
532 |
|
|
it.next(); |
533 |
|
|
it.remove(); |
534 |
|
|
|
535 |
|
|
it = q.iterator(); |
536 |
jsr166 |
1.24 |
assertSame(it.next(), one); |
537 |
|
|
assertSame(it.next(), three); |
538 |
dl |
1.1 |
assertFalse(it.hasNext()); |
539 |
|
|
} |
540 |
|
|
|
541 |
|
|
/** |
542 |
|
|
* iterator ordering is FIFO |
543 |
|
|
*/ |
544 |
|
|
public void testIteratorOrdering() { |
545 |
jsr166 |
1.7 |
final LinkedTransferQueue<Integer> q |
546 |
|
|
= new LinkedTransferQueue<Integer>(); |
547 |
jsr166 |
1.5 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
548 |
dl |
1.1 |
q.add(one); |
549 |
|
|
q.add(two); |
550 |
|
|
q.add(three); |
551 |
jsr166 |
1.5 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
552 |
dl |
1.1 |
int k = 0; |
553 |
jsr166 |
1.5 |
for (Integer n : q) { |
554 |
|
|
assertEquals(++k, (int) n); |
555 |
dl |
1.1 |
} |
556 |
|
|
assertEquals(3, k); |
557 |
|
|
} |
558 |
|
|
|
559 |
|
|
/** |
560 |
|
|
* Modifications do not cause iterators to fail |
561 |
|
|
*/ |
562 |
|
|
public void testWeaklyConsistentIteration() { |
563 |
|
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
564 |
|
|
q.add(one); |
565 |
|
|
q.add(two); |
566 |
|
|
q.add(three); |
567 |
jsr166 |
1.5 |
for (Iterator it = q.iterator(); it.hasNext();) { |
568 |
|
|
q.remove(); |
569 |
|
|
it.next(); |
570 |
dl |
1.1 |
} |
571 |
|
|
assertEquals(0, q.size()); |
572 |
|
|
} |
573 |
|
|
|
574 |
|
|
/** |
575 |
|
|
* toString contains toStrings of elements |
576 |
|
|
*/ |
577 |
|
|
public void testToString() { |
578 |
|
|
LinkedTransferQueue q = populatedQueue(SIZE); |
579 |
|
|
String s = q.toString(); |
580 |
|
|
for (int i = 0; i < SIZE; ++i) { |
581 |
jsr166 |
1.46 |
assertTrue(s.contains(String.valueOf(i))); |
582 |
dl |
1.1 |
} |
583 |
|
|
} |
584 |
|
|
|
585 |
|
|
/** |
586 |
|
|
* offer transfers elements across Executor tasks |
587 |
|
|
*/ |
588 |
|
|
public void testOfferInExecutor() { |
589 |
|
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
590 |
jsr166 |
1.46 |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
591 |
dl |
1.1 |
ExecutorService executor = Executors.newFixedThreadPool(2); |
592 |
jsr166 |
1.7 |
|
593 |
|
|
executor.execute(new CheckedRunnable() { |
594 |
jsr166 |
1.31 |
public void realRun() throws InterruptedException { |
595 |
|
|
threadsStarted.await(); |
596 |
jsr166 |
1.46 |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
597 |
jsr166 |
1.5 |
}}); |
598 |
dl |
1.1 |
|
599 |
jsr166 |
1.7 |
executor.execute(new CheckedRunnable() { |
600 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
601 |
jsr166 |
1.31 |
threadsStarted.await(); |
602 |
jsr166 |
1.24 |
assertSame(one, q.take()); |
603 |
jsr166 |
1.31 |
checkEmpty(q); |
604 |
jsr166 |
1.5 |
}}); |
605 |
dl |
1.1 |
|
606 |
|
|
joinPool(executor); |
607 |
|
|
} |
608 |
|
|
|
609 |
|
|
/** |
610 |
jsr166 |
1.13 |
* timed poll retrieves elements across Executor threads |
611 |
dl |
1.1 |
*/ |
612 |
|
|
public void testPollInExecutor() { |
613 |
|
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
614 |
jsr166 |
1.46 |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
615 |
dl |
1.1 |
ExecutorService executor = Executors.newFixedThreadPool(2); |
616 |
jsr166 |
1.7 |
|
617 |
|
|
executor.execute(new CheckedRunnable() { |
618 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
619 |
jsr166 |
1.22 |
assertNull(q.poll()); |
620 |
jsr166 |
1.31 |
threadsStarted.await(); |
621 |
jsr166 |
1.46 |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
622 |
jsr166 |
1.31 |
checkEmpty(q); |
623 |
jsr166 |
1.5 |
}}); |
624 |
dl |
1.1 |
|
625 |
jsr166 |
1.7 |
executor.execute(new CheckedRunnable() { |
626 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
627 |
jsr166 |
1.31 |
threadsStarted.await(); |
628 |
jsr166 |
1.7 |
q.put(one); |
629 |
jsr166 |
1.5 |
}}); |
630 |
dl |
1.1 |
|
631 |
|
|
joinPool(executor); |
632 |
|
|
} |
633 |
|
|
|
634 |
|
|
/** |
635 |
|
|
* A deserialized serialized queue has same elements in same order |
636 |
|
|
*/ |
637 |
jsr166 |
1.5 |
public void testSerialization() throws Exception { |
638 |
jsr166 |
1.48 |
Queue x = populatedQueue(SIZE); |
639 |
|
|
Queue y = serialClone(x); |
640 |
dl |
1.1 |
|
641 |
jsr166 |
1.52 |
assertNotSame(y, x); |
642 |
jsr166 |
1.48 |
assertEquals(x.size(), y.size()); |
643 |
|
|
assertEquals(x.toString(), y.toString()); |
644 |
|
|
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
645 |
|
|
while (!x.isEmpty()) { |
646 |
|
|
assertFalse(y.isEmpty()); |
647 |
|
|
assertEquals(x.remove(), y.remove()); |
648 |
dl |
1.1 |
} |
649 |
jsr166 |
1.48 |
assertTrue(y.isEmpty()); |
650 |
dl |
1.1 |
} |
651 |
|
|
|
652 |
|
|
/** |
653 |
|
|
* drainTo(c) empties queue into another collection c |
654 |
|
|
*/ |
655 |
|
|
public void testDrainTo() { |
656 |
|
|
LinkedTransferQueue q = populatedQueue(SIZE); |
657 |
|
|
ArrayList l = new ArrayList(); |
658 |
|
|
q.drainTo(l); |
659 |
jsr166 |
1.50 |
assertEquals(0, q.size()); |
660 |
|
|
assertEquals(SIZE, l.size()); |
661 |
dl |
1.1 |
for (int i = 0; i < SIZE; ++i) { |
662 |
jsr166 |
1.51 |
assertEquals(i, l.get(i)); |
663 |
dl |
1.1 |
} |
664 |
|
|
q.add(zero); |
665 |
|
|
q.add(one); |
666 |
|
|
assertFalse(q.isEmpty()); |
667 |
|
|
assertTrue(q.contains(zero)); |
668 |
|
|
assertTrue(q.contains(one)); |
669 |
|
|
l.clear(); |
670 |
|
|
q.drainTo(l); |
671 |
jsr166 |
1.50 |
assertEquals(0, q.size()); |
672 |
|
|
assertEquals(2, l.size()); |
673 |
dl |
1.1 |
for (int i = 0; i < 2; ++i) { |
674 |
jsr166 |
1.51 |
assertEquals(i, l.get(i)); |
675 |
dl |
1.1 |
} |
676 |
|
|
} |
677 |
|
|
|
678 |
|
|
/** |
679 |
jsr166 |
1.13 |
* drainTo(c) empties full queue, unblocking a waiting put. |
680 |
dl |
1.1 |
*/ |
681 |
jsr166 |
1.5 |
public void testDrainToWithActivePut() throws InterruptedException { |
682 |
dl |
1.1 |
final LinkedTransferQueue q = populatedQueue(SIZE); |
683 |
jsr166 |
1.9 |
Thread t = newStartedThread(new CheckedRunnable() { |
684 |
jsr166 |
1.21 |
public void realRun() { |
685 |
jsr166 |
1.7 |
q.put(SIZE + 1); |
686 |
jsr166 |
1.5 |
}}); |
687 |
|
|
ArrayList l = new ArrayList(); |
688 |
|
|
q.drainTo(l); |
689 |
|
|
assertTrue(l.size() >= SIZE); |
690 |
jsr166 |
1.51 |
for (int i = 0; i < SIZE; ++i) |
691 |
|
|
assertEquals(i, l.get(i)); |
692 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
693 |
jsr166 |
1.5 |
assertTrue(q.size() + l.size() >= SIZE); |
694 |
dl |
1.1 |
} |
695 |
|
|
|
696 |
|
|
/** |
697 |
jsr166 |
1.26 |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
698 |
dl |
1.1 |
*/ |
699 |
|
|
public void testDrainToN() { |
700 |
|
|
LinkedTransferQueue q = new LinkedTransferQueue(); |
701 |
|
|
for (int i = 0; i < SIZE + 2; ++i) { |
702 |
|
|
for (int j = 0; j < SIZE; j++) { |
703 |
jsr166 |
1.5 |
assertTrue(q.offer(j)); |
704 |
dl |
1.1 |
} |
705 |
|
|
ArrayList l = new ArrayList(); |
706 |
|
|
q.drainTo(l, i); |
707 |
|
|
int k = (i < SIZE) ? i : SIZE; |
708 |
jsr166 |
1.51 |
assertEquals(k, l.size()); |
709 |
|
|
assertEquals(SIZE - k, q.size()); |
710 |
|
|
for (int j = 0; j < k; ++j) |
711 |
|
|
assertEquals(j, l.get(j)); |
712 |
jsr166 |
1.56 |
do {} while (q.poll() != null); |
713 |
dl |
1.1 |
} |
714 |
|
|
} |
715 |
|
|
|
716 |
jsr166 |
1.3 |
/** |
717 |
jsr166 |
1.13 |
* timed poll() or take() increments the waiting consumer count; |
718 |
|
|
* offer(e) decrements the waiting consumer count |
719 |
dl |
1.1 |
*/ |
720 |
jsr166 |
1.5 |
public void testWaitingConsumer() throws InterruptedException { |
721 |
|
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
722 |
jsr166 |
1.50 |
assertEquals(0, q.getWaitingConsumerCount()); |
723 |
jsr166 |
1.13 |
assertFalse(q.hasWaitingConsumer()); |
724 |
jsr166 |
1.31 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
725 |
jsr166 |
1.9 |
|
726 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
727 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
728 |
jsr166 |
1.31 |
threadStarted.countDown(); |
729 |
|
|
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
730 |
jsr166 |
1.50 |
assertEquals(0, q.getWaitingConsumerCount()); |
731 |
jsr166 |
1.22 |
assertFalse(q.hasWaitingConsumer()); |
732 |
jsr166 |
1.9 |
}}); |
733 |
|
|
|
734 |
jsr166 |
1.31 |
threadStarted.await(); |
735 |
|
|
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
736 |
jsr166 |
1.50 |
assertEquals(1, q.getWaitingConsumerCount()); |
737 |
jsr166 |
1.31 |
assertTrue(q.hasWaitingConsumer()); |
738 |
|
|
|
739 |
|
|
assertTrue(q.offer(one)); |
740 |
jsr166 |
1.50 |
assertEquals(0, q.getWaitingConsumerCount()); |
741 |
jsr166 |
1.13 |
assertFalse(q.hasWaitingConsumer()); |
742 |
jsr166 |
1.31 |
|
743 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
744 |
dl |
1.1 |
} |
745 |
jsr166 |
1.3 |
|
746 |
|
|
/** |
747 |
jsr166 |
1.5 |
* transfer(null) throws NullPointerException |
748 |
dl |
1.1 |
*/ |
749 |
jsr166 |
1.5 |
public void testTransfer1() throws InterruptedException { |
750 |
dl |
1.1 |
try { |
751 |
|
|
LinkedTransferQueue q = new LinkedTransferQueue(); |
752 |
|
|
q.transfer(null); |
753 |
|
|
shouldThrow(); |
754 |
jsr166 |
1.15 |
} catch (NullPointerException success) {} |
755 |
dl |
1.1 |
} |
756 |
|
|
|
757 |
jsr166 |
1.3 |
/** |
758 |
dl |
1.6 |
* transfer waits until a poll occurs. The transfered element |
759 |
|
|
* is returned by this associated poll. |
760 |
dl |
1.1 |
*/ |
761 |
jsr166 |
1.5 |
public void testTransfer2() throws InterruptedException { |
762 |
jsr166 |
1.7 |
final LinkedTransferQueue<Integer> q |
763 |
|
|
= new LinkedTransferQueue<Integer>(); |
764 |
jsr166 |
1.31 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
765 |
jsr166 |
1.5 |
|
766 |
jsr166 |
1.9 |
Thread t = newStartedThread(new CheckedRunnable() { |
767 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
768 |
jsr166 |
1.31 |
threadStarted.countDown(); |
769 |
jsr166 |
1.34 |
q.transfer(five); |
770 |
jsr166 |
1.31 |
checkEmpty(q); |
771 |
jsr166 |
1.9 |
}}); |
772 |
dl |
1.1 |
|
773 |
jsr166 |
1.31 |
threadStarted.await(); |
774 |
|
|
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
775 |
jsr166 |
1.5 |
assertEquals(1, q.size()); |
776 |
jsr166 |
1.34 |
assertSame(five, q.poll()); |
777 |
jsr166 |
1.31 |
checkEmpty(q); |
778 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
779 |
dl |
1.1 |
} |
780 |
jsr166 |
1.3 |
|
781 |
|
|
/** |
782 |
dl |
1.6 |
* transfer waits until a poll occurs, and then transfers in fifo order |
783 |
dl |
1.1 |
*/ |
784 |
jsr166 |
1.5 |
public void testTransfer3() throws InterruptedException { |
785 |
jsr166 |
1.7 |
final LinkedTransferQueue<Integer> q |
786 |
|
|
= new LinkedTransferQueue<Integer>(); |
787 |
jsr166 |
1.5 |
|
788 |
jsr166 |
1.9 |
Thread first = newStartedThread(new CheckedRunnable() { |
789 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
790 |
jsr166 |
1.32 |
q.transfer(four); |
791 |
|
|
assertTrue(!q.contains(four)); |
792 |
jsr166 |
1.24 |
assertEquals(1, q.size()); |
793 |
jsr166 |
1.7 |
}}); |
794 |
jsr166 |
1.5 |
|
795 |
jsr166 |
1.9 |
Thread interruptedThread = newStartedThread( |
796 |
|
|
new CheckedInterruptedRunnable() { |
797 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
798 |
jsr166 |
1.32 |
while (q.isEmpty()) |
799 |
jsr166 |
1.9 |
Thread.yield(); |
800 |
jsr166 |
1.32 |
q.transfer(five); |
801 |
jsr166 |
1.9 |
}}); |
802 |
jsr166 |
1.5 |
|
803 |
|
|
while (q.size() < 2) |
804 |
|
|
Thread.yield(); |
805 |
|
|
assertEquals(2, q.size()); |
806 |
jsr166 |
1.32 |
assertSame(four, q.poll()); |
807 |
jsr166 |
1.5 |
first.join(); |
808 |
|
|
assertEquals(1, q.size()); |
809 |
|
|
interruptedThread.interrupt(); |
810 |
|
|
interruptedThread.join(); |
811 |
jsr166 |
1.31 |
checkEmpty(q); |
812 |
dl |
1.1 |
} |
813 |
|
|
|
814 |
|
|
/** |
815 |
dl |
1.6 |
* transfer waits until a poll occurs, at which point the polling |
816 |
|
|
* thread returns the element |
817 |
dl |
1.1 |
*/ |
818 |
jsr166 |
1.5 |
public void testTransfer4() throws InterruptedException { |
819 |
dl |
1.1 |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
820 |
jsr166 |
1.9 |
|
821 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
822 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
823 |
jsr166 |
1.7 |
q.transfer(four); |
824 |
jsr166 |
1.24 |
assertFalse(q.contains(four)); |
825 |
|
|
assertSame(three, q.poll()); |
826 |
jsr166 |
1.9 |
}}); |
827 |
|
|
|
828 |
jsr166 |
1.31 |
while (q.isEmpty()) |
829 |
|
|
Thread.yield(); |
830 |
|
|
assertFalse(q.isEmpty()); |
831 |
|
|
assertEquals(1, q.size()); |
832 |
jsr166 |
1.5 |
assertTrue(q.offer(three)); |
833 |
jsr166 |
1.24 |
assertSame(four, q.poll()); |
834 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
835 |
dl |
1.1 |
} |
836 |
jsr166 |
1.3 |
|
837 |
|
|
/** |
838 |
dl |
1.6 |
* transfer waits until a take occurs. The transfered element |
839 |
|
|
* is returned by this associated take. |
840 |
|
|
*/ |
841 |
|
|
public void testTransfer5() throws InterruptedException { |
842 |
jsr166 |
1.7 |
final LinkedTransferQueue<Integer> q |
843 |
|
|
= new LinkedTransferQueue<Integer>(); |
844 |
dl |
1.6 |
|
845 |
jsr166 |
1.9 |
Thread t = newStartedThread(new CheckedRunnable() { |
846 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
847 |
jsr166 |
1.31 |
q.transfer(four); |
848 |
jsr166 |
1.12 |
checkEmpty(q); |
849 |
jsr166 |
1.9 |
}}); |
850 |
dl |
1.6 |
|
851 |
jsr166 |
1.31 |
while (q.isEmpty()) |
852 |
|
|
Thread.yield(); |
853 |
|
|
assertFalse(q.isEmpty()); |
854 |
|
|
assertEquals(1, q.size()); |
855 |
|
|
assertSame(four, q.take()); |
856 |
jsr166 |
1.12 |
checkEmpty(q); |
857 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
858 |
dl |
1.6 |
} |
859 |
|
|
|
860 |
|
|
/** |
861 |
jsr166 |
1.5 |
* tryTransfer(null) throws NullPointerException |
862 |
dl |
1.1 |
*/ |
863 |
|
|
public void testTryTransfer1() { |
864 |
jsr166 |
1.60 |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
865 |
dl |
1.1 |
try { |
866 |
|
|
q.tryTransfer(null); |
867 |
jsr166 |
1.8 |
shouldThrow(); |
868 |
jsr166 |
1.15 |
} catch (NullPointerException success) {} |
869 |
dl |
1.1 |
} |
870 |
jsr166 |
1.3 |
|
871 |
|
|
/** |
872 |
jsr166 |
1.5 |
* tryTransfer returns false and does not enqueue if there are no |
873 |
|
|
* consumers waiting to poll or take. |
874 |
dl |
1.1 |
*/ |
875 |
jsr166 |
1.12 |
public void testTryTransfer2() throws InterruptedException { |
876 |
jsr166 |
1.5 |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
877 |
|
|
assertFalse(q.tryTransfer(new Object())); |
878 |
|
|
assertFalse(q.hasWaitingConsumer()); |
879 |
jsr166 |
1.12 |
checkEmpty(q); |
880 |
dl |
1.1 |
} |
881 |
jsr166 |
1.3 |
|
882 |
|
|
/** |
883 |
jsr166 |
1.5 |
* If there is a consumer waiting in timed poll, tryTransfer |
884 |
|
|
* returns true while successfully transfering object. |
885 |
dl |
1.1 |
*/ |
886 |
jsr166 |
1.5 |
public void testTryTransfer3() throws InterruptedException { |
887 |
|
|
final Object hotPotato = new Object(); |
888 |
|
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
889 |
jsr166 |
1.9 |
|
890 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
891 |
jsr166 |
1.21 |
public void realRun() { |
892 |
jsr166 |
1.7 |
while (! q.hasWaitingConsumer()) |
893 |
|
|
Thread.yield(); |
894 |
jsr166 |
1.24 |
assertTrue(q.hasWaitingConsumer()); |
895 |
jsr166 |
1.31 |
checkEmpty(q); |
896 |
jsr166 |
1.24 |
assertTrue(q.tryTransfer(hotPotato)); |
897 |
jsr166 |
1.9 |
}}); |
898 |
|
|
|
899 |
jsr166 |
1.23 |
assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
900 |
jsr166 |
1.12 |
checkEmpty(q); |
901 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
902 |
jsr166 |
1.5 |
} |
903 |
dl |
1.1 |
|
904 |
jsr166 |
1.5 |
/** |
905 |
|
|
* If there is a consumer waiting in take, tryTransfer returns |
906 |
|
|
* true while successfully transfering object. |
907 |
|
|
*/ |
908 |
|
|
public void testTryTransfer4() throws InterruptedException { |
909 |
|
|
final Object hotPotato = new Object(); |
910 |
|
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
911 |
jsr166 |
1.9 |
|
912 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
913 |
jsr166 |
1.21 |
public void realRun() { |
914 |
jsr166 |
1.7 |
while (! q.hasWaitingConsumer()) |
915 |
|
|
Thread.yield(); |
916 |
jsr166 |
1.24 |
assertTrue(q.hasWaitingConsumer()); |
917 |
jsr166 |
1.31 |
checkEmpty(q); |
918 |
jsr166 |
1.24 |
assertTrue(q.tryTransfer(hotPotato)); |
919 |
jsr166 |
1.9 |
}}); |
920 |
|
|
|
921 |
jsr166 |
1.23 |
assertSame(q.take(), hotPotato); |
922 |
jsr166 |
1.12 |
checkEmpty(q); |
923 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
924 |
dl |
1.1 |
} |
925 |
|
|
|
926 |
jsr166 |
1.3 |
/** |
927 |
jsr166 |
1.46 |
* tryTransfer blocks interruptibly if no takers |
928 |
dl |
1.1 |
*/ |
929 |
jsr166 |
1.5 |
public void testTryTransfer5() throws InterruptedException { |
930 |
dl |
1.1 |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
931 |
jsr166 |
1.46 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
932 |
jsr166 |
1.40 |
assertTrue(q.isEmpty()); |
933 |
jsr166 |
1.9 |
|
934 |
jsr166 |
1.31 |
Thread t = newStartedThread(new CheckedRunnable() { |
935 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
936 |
jsr166 |
1.46 |
Thread.currentThread().interrupt(); |
937 |
|
|
try { |
938 |
|
|
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
939 |
|
|
shouldThrow(); |
940 |
|
|
} catch (InterruptedException success) {} |
941 |
|
|
assertFalse(Thread.interrupted()); |
942 |
|
|
|
943 |
|
|
pleaseInterrupt.countDown(); |
944 |
jsr166 |
1.31 |
try { |
945 |
|
|
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
946 |
|
|
shouldThrow(); |
947 |
|
|
} catch (InterruptedException success) {} |
948 |
jsr166 |
1.46 |
assertFalse(Thread.interrupted()); |
949 |
jsr166 |
1.5 |
}}); |
950 |
jsr166 |
1.9 |
|
951 |
jsr166 |
1.46 |
await(pleaseInterrupt); |
952 |
|
|
assertThreadStaysAlive(t); |
953 |
jsr166 |
1.31 |
t.interrupt(); |
954 |
jsr166 |
1.46 |
awaitTermination(t); |
955 |
jsr166 |
1.31 |
checkEmpty(q); |
956 |
dl |
1.1 |
} |
957 |
|
|
|
958 |
jsr166 |
1.3 |
/** |
959 |
jsr166 |
1.33 |
* tryTransfer gives up after the timeout and returns false |
960 |
dl |
1.1 |
*/ |
961 |
jsr166 |
1.5 |
public void testTryTransfer6() throws InterruptedException { |
962 |
dl |
1.1 |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
963 |
jsr166 |
1.9 |
|
964 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
965 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
966 |
jsr166 |
1.27 |
long t0 = System.nanoTime(); |
967 |
jsr166 |
1.23 |
assertFalse(q.tryTransfer(new Object(), |
968 |
jsr166 |
1.46 |
timeoutMillis(), MILLISECONDS)); |
969 |
|
|
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
970 |
jsr166 |
1.32 |
checkEmpty(q); |
971 |
jsr166 |
1.9 |
}}); |
972 |
|
|
|
973 |
jsr166 |
1.46 |
awaitTermination(t); |
974 |
jsr166 |
1.27 |
checkEmpty(q); |
975 |
dl |
1.1 |
} |
976 |
|
|
|
977 |
jsr166 |
1.3 |
/** |
978 |
dl |
1.1 |
* tryTransfer waits for any elements previously in to be removed |
979 |
|
|
* before transfering to a poll or take |
980 |
|
|
*/ |
981 |
jsr166 |
1.5 |
public void testTryTransfer7() throws InterruptedException { |
982 |
dl |
1.1 |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
983 |
jsr166 |
1.5 |
assertTrue(q.offer(four)); |
984 |
jsr166 |
1.9 |
|
985 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
986 |
jsr166 |
1.21 |
public void realRun() throws InterruptedException { |
987 |
jsr166 |
1.23 |
assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS)); |
988 |
jsr166 |
1.31 |
checkEmpty(q); |
989 |
jsr166 |
1.9 |
}}); |
990 |
|
|
|
991 |
jsr166 |
1.32 |
while (q.size() != 2) |
992 |
|
|
Thread.yield(); |
993 |
jsr166 |
1.5 |
assertEquals(2, q.size()); |
994 |
jsr166 |
1.24 |
assertSame(four, q.poll()); |
995 |
|
|
assertSame(five, q.poll()); |
996 |
jsr166 |
1.12 |
checkEmpty(q); |
997 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
998 |
dl |
1.1 |
} |
999 |
|
|
|
1000 |
jsr166 |
1.3 |
/** |
1001 |
jsr166 |
1.41 |
* tryTransfer attempts to enqueue into the queue and fails |
1002 |
|
|
* returning false not enqueueing and the successive poll is null |
1003 |
dl |
1.1 |
*/ |
1004 |
jsr166 |
1.5 |
public void testTryTransfer8() throws InterruptedException { |
1005 |
dl |
1.1 |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
1006 |
jsr166 |
1.5 |
assertTrue(q.offer(four)); |
1007 |
|
|
assertEquals(1, q.size()); |
1008 |
jsr166 |
1.32 |
long t0 = System.nanoTime(); |
1009 |
jsr166 |
1.46 |
assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS)); |
1010 |
|
|
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
1011 |
jsr166 |
1.5 |
assertEquals(1, q.size()); |
1012 |
jsr166 |
1.24 |
assertSame(four, q.poll()); |
1013 |
jsr166 |
1.13 |
assertNull(q.poll()); |
1014 |
jsr166 |
1.12 |
checkEmpty(q); |
1015 |
dl |
1.1 |
} |
1016 |
|
|
|
1017 |
jsr166 |
1.5 |
private LinkedTransferQueue<Integer> populatedQueue(int n) { |
1018 |
|
|
LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>(); |
1019 |
jsr166 |
1.31 |
checkEmpty(q); |
1020 |
jsr166 |
1.5 |
for (int i = 0; i < n; i++) { |
1021 |
|
|
assertEquals(i, q.size()); |
1022 |
dl |
1.1 |
assertTrue(q.offer(i)); |
1023 |
jsr166 |
1.5 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
1024 |
dl |
1.1 |
} |
1025 |
|
|
assertFalse(q.isEmpty()); |
1026 |
|
|
return q; |
1027 |
|
|
} |
1028 |
jsr166 |
1.53 |
|
1029 |
|
|
/** |
1030 |
|
|
* remove(null), contains(null) always return false |
1031 |
|
|
*/ |
1032 |
|
|
public void testNeverContainsNull() { |
1033 |
|
|
Collection<?>[] qs = { |
1034 |
|
|
new LinkedTransferQueue<Object>(), |
1035 |
|
|
populatedQueue(2), |
1036 |
|
|
}; |
1037 |
|
|
|
1038 |
|
|
for (Collection<?> q : qs) { |
1039 |
|
|
assertFalse(q.contains(null)); |
1040 |
|
|
assertFalse(q.remove(null)); |
1041 |
|
|
} |
1042 |
|
|
} |
1043 |
dl |
1.1 |
} |