1 |
dl |
1.1 |
/* |
2 |
dl |
1.12 |
* 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 |
4 |
jsr166 |
1.39 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
jsr166 |
1.26 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
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* Pat Fisher, Mike Judd. |
7 |
dl |
1.1 |
*/ |
8 |
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9 |
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import junit.framework.*; |
10 |
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import java.util.concurrent.locks.*; |
11 |
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import java.util.concurrent.*; |
12 |
jsr166 |
1.31 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
13 |
dl |
1.5 |
import java.util.*; |
14 |
dl |
1.3 |
import java.io.*; |
15 |
dl |
1.1 |
|
16 |
dl |
1.4 |
public class ReentrantLockTest extends JSR166TestCase { |
17 |
dl |
1.1 |
public static void main(String[] args) { |
18 |
jsr166 |
1.36 |
junit.textui.TestRunner.run(suite()); |
19 |
dl |
1.1 |
} |
20 |
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public static Test suite() { |
21 |
jsr166 |
1.30 |
return new TestSuite(ReentrantLockTest.class); |
22 |
dl |
1.1 |
} |
23 |
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|
24 |
dl |
1.6 |
/** |
25 |
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* A runnable calling lockInterruptibly |
26 |
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*/ |
27 |
jsr166 |
1.29 |
class InterruptibleLockRunnable extends CheckedRunnable { |
28 |
dl |
1.5 |
final ReentrantLock lock; |
29 |
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InterruptibleLockRunnable(ReentrantLock l) { lock = l; } |
30 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
31 |
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lock.lockInterruptibly(); |
32 |
dl |
1.5 |
} |
33 |
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} |
34 |
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35 |
dl |
1.6 |
|
36 |
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/** |
37 |
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* A runnable calling lockInterruptibly that expects to be |
38 |
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* interrupted |
39 |
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*/ |
40 |
jsr166 |
1.29 |
class InterruptedLockRunnable extends CheckedInterruptedRunnable { |
41 |
dl |
1.5 |
final ReentrantLock lock; |
42 |
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InterruptedLockRunnable(ReentrantLock l) { lock = l; } |
43 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
44 |
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lock.lockInterruptibly(); |
45 |
dl |
1.5 |
} |
46 |
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} |
47 |
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48 |
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/** |
49 |
dl |
1.6 |
* Subclass to expose protected methods |
50 |
dl |
1.5 |
*/ |
51 |
dl |
1.6 |
static class PublicReentrantLock extends ReentrantLock { |
52 |
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PublicReentrantLock() { super(); } |
53 |
jsr166 |
1.26 |
public Collection<Thread> getQueuedThreads() { |
54 |
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return super.getQueuedThreads(); |
55 |
dl |
1.5 |
} |
56 |
jsr166 |
1.26 |
public Collection<Thread> getWaitingThreads(Condition c) { |
57 |
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return super.getWaitingThreads(c); |
58 |
dl |
1.13 |
} |
59 |
dl |
1.5 |
} |
60 |
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|
61 |
dl |
1.8 |
/** |
62 |
dl |
1.9 |
* Constructor sets given fairness |
63 |
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*/ |
64 |
jsr166 |
1.26 |
public void testConstructor() { |
65 |
jsr166 |
1.29 |
assertFalse(new ReentrantLock().isFair()); |
66 |
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assertFalse(new ReentrantLock(false).isFair()); |
67 |
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assertTrue(new ReentrantLock(true).isFair()); |
68 |
dl |
1.9 |
} |
69 |
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70 |
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/** |
71 |
dl |
1.6 |
* locking an unlocked lock succeeds |
72 |
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*/ |
73 |
jsr166 |
1.26 |
public void testLock() { |
74 |
jsr166 |
1.30 |
ReentrantLock rl = new ReentrantLock(); |
75 |
dl |
1.6 |
rl.lock(); |
76 |
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assertTrue(rl.isLocked()); |
77 |
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rl.unlock(); |
78 |
jsr166 |
1.29 |
assertFalse(rl.isLocked()); |
79 |
dl |
1.6 |
} |
80 |
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|
81 |
dl |
1.8 |
/** |
82 |
dl |
1.6 |
* locking an unlocked fair lock succeeds |
83 |
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*/ |
84 |
jsr166 |
1.26 |
public void testFairLock() { |
85 |
jsr166 |
1.30 |
ReentrantLock rl = new ReentrantLock(true); |
86 |
dl |
1.6 |
rl.lock(); |
87 |
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assertTrue(rl.isLocked()); |
88 |
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rl.unlock(); |
89 |
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} |
90 |
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|
91 |
dl |
1.8 |
/** |
92 |
dl |
1.5 |
* Unlocking an unlocked lock throws IllegalMonitorStateException |
93 |
dl |
1.1 |
*/ |
94 |
jsr166 |
1.26 |
public void testUnlock_IllegalMonitorStateException() { |
95 |
jsr166 |
1.30 |
ReentrantLock rl = new ReentrantLock(); |
96 |
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try { |
97 |
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rl.unlock(); |
98 |
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shouldThrow(); |
99 |
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} catch (IllegalMonitorStateException success) {} |
100 |
dl |
1.5 |
} |
101 |
dl |
1.1 |
|
102 |
dl |
1.8 |
/** |
103 |
dl |
1.15 |
* tryLock on an unlocked lock succeeds |
104 |
dl |
1.1 |
*/ |
105 |
jsr166 |
1.26 |
public void testTryLock() { |
106 |
jsr166 |
1.30 |
ReentrantLock rl = new ReentrantLock(); |
107 |
dl |
1.6 |
assertTrue(rl.tryLock()); |
108 |
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assertTrue(rl.isLocked()); |
109 |
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rl.unlock(); |
110 |
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} |
111 |
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112 |
dl |
1.1 |
|
113 |
dl |
1.8 |
/** |
114 |
dl |
1.13 |
* hasQueuedThreads reports whether there are waiting threads |
115 |
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*/ |
116 |
jsr166 |
1.29 |
public void testhasQueuedThreads() throws InterruptedException { |
117 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
118 |
dl |
1.13 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
119 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
120 |
jsr166 |
1.29 |
assertFalse(lock.hasQueuedThreads()); |
121 |
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lock.lock(); |
122 |
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t1.start(); |
123 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
124 |
jsr166 |
1.29 |
assertTrue(lock.hasQueuedThreads()); |
125 |
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t2.start(); |
126 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
127 |
jsr166 |
1.29 |
assertTrue(lock.hasQueuedThreads()); |
128 |
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t1.interrupt(); |
129 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
130 |
jsr166 |
1.29 |
assertTrue(lock.hasQueuedThreads()); |
131 |
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lock.unlock(); |
132 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
133 |
jsr166 |
1.29 |
assertFalse(lock.hasQueuedThreads()); |
134 |
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t1.join(); |
135 |
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t2.join(); |
136 |
jsr166 |
1.26 |
} |
137 |
dl |
1.13 |
|
138 |
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/** |
139 |
dl |
1.7 |
* getQueueLength reports number of waiting threads |
140 |
dl |
1.1 |
*/ |
141 |
jsr166 |
1.29 |
public void testGetQueueLength() throws InterruptedException { |
142 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
143 |
dl |
1.5 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
144 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
145 |
jsr166 |
1.29 |
assertEquals(0, lock.getQueueLength()); |
146 |
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lock.lock(); |
147 |
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t1.start(); |
148 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
149 |
jsr166 |
1.29 |
assertEquals(1, lock.getQueueLength()); |
150 |
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t2.start(); |
151 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
152 |
jsr166 |
1.29 |
assertEquals(2, lock.getQueueLength()); |
153 |
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t1.interrupt(); |
154 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
155 |
jsr166 |
1.29 |
assertEquals(1, lock.getQueueLength()); |
156 |
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lock.unlock(); |
157 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
158 |
jsr166 |
1.29 |
assertEquals(0, lock.getQueueLength()); |
159 |
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t1.join(); |
160 |
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t2.join(); |
161 |
jsr166 |
1.26 |
} |
162 |
dl |
1.5 |
|
163 |
dl |
1.8 |
/** |
164 |
dl |
1.16 |
* getQueueLength reports number of waiting threads |
165 |
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*/ |
166 |
jsr166 |
1.29 |
public void testGetQueueLength_fair() throws InterruptedException { |
167 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(true); |
168 |
dl |
1.16 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
169 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
170 |
jsr166 |
1.29 |
assertEquals(0, lock.getQueueLength()); |
171 |
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lock.lock(); |
172 |
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t1.start(); |
173 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
174 |
jsr166 |
1.29 |
assertEquals(1, lock.getQueueLength()); |
175 |
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t2.start(); |
176 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
177 |
jsr166 |
1.29 |
assertEquals(2, lock.getQueueLength()); |
178 |
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t1.interrupt(); |
179 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
180 |
jsr166 |
1.29 |
assertEquals(1, lock.getQueueLength()); |
181 |
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lock.unlock(); |
182 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
183 |
jsr166 |
1.29 |
assertEquals(0, lock.getQueueLength()); |
184 |
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t1.join(); |
185 |
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t2.join(); |
186 |
jsr166 |
1.26 |
} |
187 |
dl |
1.16 |
|
188 |
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/** |
189 |
dl |
1.19 |
* hasQueuedThread(null) throws NPE |
190 |
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*/ |
191 |
jsr166 |
1.26 |
public void testHasQueuedThreadNPE() { |
192 |
jsr166 |
1.30 |
final ReentrantLock sync = new ReentrantLock(); |
193 |
dl |
1.19 |
try { |
194 |
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sync.hasQueuedThread(null); |
195 |
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shouldThrow(); |
196 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
197 |
dl |
1.19 |
} |
198 |
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|
199 |
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/** |
200 |
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* hasQueuedThread reports whether a thread is queued. |
201 |
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*/ |
202 |
jsr166 |
1.29 |
public void testHasQueuedThread() throws InterruptedException { |
203 |
jsr166 |
1.30 |
final ReentrantLock sync = new ReentrantLock(); |
204 |
dl |
1.19 |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
205 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
206 |
jsr166 |
1.29 |
assertFalse(sync.hasQueuedThread(t1)); |
207 |
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assertFalse(sync.hasQueuedThread(t2)); |
208 |
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sync.lock(); |
209 |
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t1.start(); |
210 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
211 |
jsr166 |
1.29 |
assertTrue(sync.hasQueuedThread(t1)); |
212 |
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t2.start(); |
213 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
214 |
jsr166 |
1.29 |
assertTrue(sync.hasQueuedThread(t1)); |
215 |
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assertTrue(sync.hasQueuedThread(t2)); |
216 |
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t1.interrupt(); |
217 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
218 |
jsr166 |
1.29 |
assertFalse(sync.hasQueuedThread(t1)); |
219 |
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assertTrue(sync.hasQueuedThread(t2)); |
220 |
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sync.unlock(); |
221 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
222 |
jsr166 |
1.29 |
assertFalse(sync.hasQueuedThread(t1)); |
223 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
224 |
jsr166 |
1.29 |
assertFalse(sync.hasQueuedThread(t2)); |
225 |
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t1.join(); |
226 |
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t2.join(); |
227 |
jsr166 |
1.26 |
} |
228 |
dl |
1.19 |
|
229 |
|
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|
230 |
|
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/** |
231 |
dl |
1.5 |
* getQueuedThreads includes waiting threads |
232 |
|
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*/ |
233 |
jsr166 |
1.29 |
public void testGetQueuedThreads() throws InterruptedException { |
234 |
jsr166 |
1.30 |
final PublicReentrantLock lock = new PublicReentrantLock(); |
235 |
dl |
1.5 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
236 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
237 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
238 |
|
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lock.lock(); |
239 |
|
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assertTrue(lock.getQueuedThreads().isEmpty()); |
240 |
|
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t1.start(); |
241 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
242 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
243 |
|
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t2.start(); |
244 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
245 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
246 |
|
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assertTrue(lock.getQueuedThreads().contains(t2)); |
247 |
|
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t1.interrupt(); |
248 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
249 |
jsr166 |
1.29 |
assertFalse(lock.getQueuedThreads().contains(t1)); |
250 |
|
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assertTrue(lock.getQueuedThreads().contains(t2)); |
251 |
|
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lock.unlock(); |
252 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
253 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
254 |
|
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t1.join(); |
255 |
|
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t2.join(); |
256 |
jsr166 |
1.26 |
} |
257 |
dl |
1.5 |
|
258 |
dl |
1.1 |
|
259 |
dl |
1.8 |
/** |
260 |
dl |
1.15 |
* timed tryLock is interruptible. |
261 |
dl |
1.5 |
*/ |
262 |
jsr166 |
1.29 |
public void testInterruptedException2() throws InterruptedException { |
263 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
264 |
|
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lock.lock(); |
265 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
266 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
267 |
jsr166 |
1.31 |
lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS); |
268 |
jsr166 |
1.29 |
}}); |
269 |
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|
270 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
271 |
jsr166 |
1.29 |
t.interrupt(); |
272 |
|
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t.join(); |
273 |
dl |
1.1 |
} |
274 |
|
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|
275 |
dl |
1.3 |
|
276 |
dl |
1.5 |
/** |
277 |
dl |
1.15 |
* TryLock on a locked lock fails |
278 |
dl |
1.5 |
*/ |
279 |
jsr166 |
1.29 |
public void testTryLockWhenLocked() throws InterruptedException { |
280 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
281 |
|
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lock.lock(); |
282 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
283 |
jsr166 |
1.29 |
public void realRun() { |
284 |
jsr166 |
1.37 |
assertFalse(lock.tryLock()); |
285 |
jsr166 |
1.29 |
}}); |
286 |
|
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|
287 |
|
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t.join(); |
288 |
|
|
lock.unlock(); |
289 |
jsr166 |
1.26 |
} |
290 |
dl |
1.3 |
|
291 |
dl |
1.5 |
/** |
292 |
dl |
1.15 |
* Timed tryLock on a locked lock times out |
293 |
dl |
1.5 |
*/ |
294 |
jsr166 |
1.29 |
public void testTryLock_Timeout() throws InterruptedException { |
295 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
296 |
|
|
lock.lock(); |
297 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
298 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
299 |
jsr166 |
1.37 |
assertFalse(lock.tryLock(1, MILLISECONDS)); |
300 |
jsr166 |
1.29 |
}}); |
301 |
|
|
|
302 |
|
|
t.join(); |
303 |
|
|
lock.unlock(); |
304 |
jsr166 |
1.26 |
} |
305 |
|
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|
306 |
dl |
1.5 |
/** |
307 |
|
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* getHoldCount returns number of recursive holds |
308 |
|
|
*/ |
309 |
dl |
1.1 |
public void testGetHoldCount() { |
310 |
jsr166 |
1.30 |
ReentrantLock lock = new ReentrantLock(); |
311 |
|
|
for (int i = 1; i <= SIZE; i++) { |
312 |
|
|
lock.lock(); |
313 |
|
|
assertEquals(i, lock.getHoldCount()); |
314 |
|
|
} |
315 |
|
|
for (int i = SIZE; i > 0; i--) { |
316 |
|
|
lock.unlock(); |
317 |
|
|
assertEquals(i-1, lock.getHoldCount()); |
318 |
|
|
} |
319 |
dl |
1.1 |
} |
320 |
jsr166 |
1.26 |
|
321 |
|
|
|
322 |
dl |
1.5 |
/** |
323 |
|
|
* isLocked is true when locked and false when not |
324 |
|
|
*/ |
325 |
jsr166 |
1.29 |
public void testIsLocked() throws InterruptedException { |
326 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
327 |
|
|
lock.lock(); |
328 |
|
|
assertTrue(lock.isLocked()); |
329 |
|
|
lock.unlock(); |
330 |
|
|
assertFalse(lock.isLocked()); |
331 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
332 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
333 |
|
|
lock.lock(); |
334 |
dl |
1.40 |
delay(SMALL_DELAY_MS); |
335 |
jsr166 |
1.29 |
lock.unlock(); |
336 |
|
|
}}); |
337 |
|
|
|
338 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
339 |
jsr166 |
1.29 |
assertTrue(lock.isLocked()); |
340 |
|
|
t.join(); |
341 |
|
|
assertFalse(lock.isLocked()); |
342 |
dl |
1.1 |
} |
343 |
|
|
|
344 |
|
|
|
345 |
dl |
1.8 |
/** |
346 |
dl |
1.6 |
* lockInterruptibly is interruptible. |
347 |
|
|
*/ |
348 |
jsr166 |
1.29 |
public void testLockInterruptibly1() throws InterruptedException { |
349 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
350 |
|
|
lock.lock(); |
351 |
jsr166 |
1.41 |
Thread t = newStartedThread(new InterruptedLockRunnable(lock)); |
352 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
353 |
jsr166 |
1.29 |
t.interrupt(); |
354 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
355 |
jsr166 |
1.29 |
lock.unlock(); |
356 |
|
|
t.join(); |
357 |
jsr166 |
1.26 |
} |
358 |
dl |
1.6 |
|
359 |
dl |
1.5 |
/** |
360 |
|
|
* lockInterruptibly succeeds when unlocked, else is interruptible |
361 |
|
|
*/ |
362 |
jsr166 |
1.29 |
public void testLockInterruptibly2() throws InterruptedException { |
363 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
364 |
jsr166 |
1.29 |
lock.lockInterruptibly(); |
365 |
jsr166 |
1.41 |
Thread t = newStartedThread(new InterruptedLockRunnable(lock)); |
366 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
367 |
jsr166 |
1.29 |
t.interrupt(); |
368 |
|
|
assertTrue(lock.isLocked()); |
369 |
|
|
assertTrue(lock.isHeldByCurrentThread()); |
370 |
|
|
t.join(); |
371 |
dl |
1.1 |
} |
372 |
dl |
1.2 |
|
373 |
dl |
1.6 |
/** |
374 |
|
|
* Calling await without holding lock throws IllegalMonitorStateException |
375 |
|
|
*/ |
376 |
jsr166 |
1.29 |
public void testAwait_IllegalMonitor() throws InterruptedException { |
377 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
378 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
379 |
|
|
try { |
380 |
|
|
c.await(); |
381 |
dl |
1.6 |
shouldThrow(); |
382 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
383 |
dl |
1.2 |
} |
384 |
|
|
|
385 |
dl |
1.6 |
/** |
386 |
|
|
* Calling signal without holding lock throws IllegalMonitorStateException |
387 |
|
|
*/ |
388 |
dl |
1.2 |
public void testSignal_IllegalMonitor() { |
389 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
390 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
391 |
|
|
try { |
392 |
|
|
c.signal(); |
393 |
dl |
1.6 |
shouldThrow(); |
394 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
395 |
dl |
1.2 |
} |
396 |
|
|
|
397 |
dl |
1.6 |
/** |
398 |
|
|
* awaitNanos without a signal times out |
399 |
|
|
*/ |
400 |
jsr166 |
1.29 |
public void testAwaitNanos_Timeout() throws InterruptedException { |
401 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
402 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
403 |
jsr166 |
1.29 |
lock.lock(); |
404 |
|
|
long t = c.awaitNanos(100); |
405 |
|
|
assertTrue(t <= 0); |
406 |
|
|
lock.unlock(); |
407 |
dl |
1.2 |
} |
408 |
|
|
|
409 |
dl |
1.6 |
/** |
410 |
jsr166 |
1.38 |
* timed await without a signal times out |
411 |
dl |
1.6 |
*/ |
412 |
jsr166 |
1.29 |
public void testAwait_Timeout() throws InterruptedException { |
413 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
414 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
415 |
jsr166 |
1.29 |
lock.lock(); |
416 |
jsr166 |
1.31 |
assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS)); |
417 |
jsr166 |
1.29 |
lock.unlock(); |
418 |
dl |
1.2 |
} |
419 |
|
|
|
420 |
dl |
1.6 |
/** |
421 |
|
|
* awaitUntil without a signal times out |
422 |
|
|
*/ |
423 |
jsr166 |
1.29 |
public void testAwaitUntil_Timeout() throws InterruptedException { |
424 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
425 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
426 |
jsr166 |
1.29 |
lock.lock(); |
427 |
|
|
java.util.Date d = new java.util.Date(); |
428 |
|
|
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
429 |
|
|
lock.unlock(); |
430 |
dl |
1.2 |
} |
431 |
|
|
|
432 |
dl |
1.6 |
/** |
433 |
|
|
* await returns when signalled |
434 |
|
|
*/ |
435 |
jsr166 |
1.29 |
public void testAwait() throws InterruptedException { |
436 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
437 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
438 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
439 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
440 |
|
|
lock.lock(); |
441 |
|
|
c.await(); |
442 |
|
|
lock.unlock(); |
443 |
|
|
}}); |
444 |
dl |
1.5 |
|
445 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
446 |
jsr166 |
1.29 |
lock.lock(); |
447 |
|
|
c.signal(); |
448 |
|
|
lock.unlock(); |
449 |
|
|
t.join(SHORT_DELAY_MS); |
450 |
|
|
assertFalse(t.isAlive()); |
451 |
dl |
1.5 |
} |
452 |
|
|
|
453 |
dl |
1.6 |
/** |
454 |
dl |
1.14 |
* hasWaiters throws NPE if null |
455 |
|
|
*/ |
456 |
|
|
public void testHasWaitersNPE() { |
457 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
458 |
dl |
1.14 |
try { |
459 |
|
|
lock.hasWaiters(null); |
460 |
|
|
shouldThrow(); |
461 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
462 |
dl |
1.14 |
} |
463 |
|
|
|
464 |
|
|
/** |
465 |
|
|
* getWaitQueueLength throws NPE if null |
466 |
|
|
*/ |
467 |
|
|
public void testGetWaitQueueLengthNPE() { |
468 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
469 |
dl |
1.14 |
try { |
470 |
|
|
lock.getWaitQueueLength(null); |
471 |
|
|
shouldThrow(); |
472 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
473 |
dl |
1.14 |
} |
474 |
|
|
|
475 |
|
|
|
476 |
|
|
/** |
477 |
|
|
* getWaitingThreads throws NPE if null |
478 |
|
|
*/ |
479 |
|
|
public void testGetWaitingThreadsNPE() { |
480 |
jsr166 |
1.30 |
final PublicReentrantLock lock = new PublicReentrantLock(); |
481 |
dl |
1.14 |
try { |
482 |
|
|
lock.getWaitingThreads(null); |
483 |
|
|
shouldThrow(); |
484 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
485 |
dl |
1.14 |
} |
486 |
|
|
|
487 |
|
|
|
488 |
|
|
/** |
489 |
dl |
1.13 |
* hasWaiters throws IAE if not owned |
490 |
|
|
*/ |
491 |
|
|
public void testHasWaitersIAE() { |
492 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
493 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
494 |
jsr166 |
1.30 |
final ReentrantLock lock2 = new ReentrantLock(); |
495 |
dl |
1.13 |
try { |
496 |
|
|
lock2.hasWaiters(c); |
497 |
|
|
shouldThrow(); |
498 |
jsr166 |
1.29 |
} catch (IllegalArgumentException success) {} |
499 |
dl |
1.13 |
} |
500 |
|
|
|
501 |
|
|
/** |
502 |
|
|
* hasWaiters throws IMSE if not locked |
503 |
|
|
*/ |
504 |
|
|
public void testHasWaitersIMSE() { |
505 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
506 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
507 |
dl |
1.13 |
try { |
508 |
|
|
lock.hasWaiters(c); |
509 |
|
|
shouldThrow(); |
510 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
511 |
dl |
1.13 |
} |
512 |
|
|
|
513 |
|
|
|
514 |
|
|
/** |
515 |
|
|
* getWaitQueueLength throws IAE if not owned |
516 |
|
|
*/ |
517 |
|
|
public void testGetWaitQueueLengthIAE() { |
518 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
519 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
520 |
jsr166 |
1.30 |
final ReentrantLock lock2 = new ReentrantLock(); |
521 |
dl |
1.13 |
try { |
522 |
|
|
lock2.getWaitQueueLength(c); |
523 |
|
|
shouldThrow(); |
524 |
jsr166 |
1.29 |
} catch (IllegalArgumentException success) {} |
525 |
dl |
1.13 |
} |
526 |
|
|
|
527 |
|
|
/** |
528 |
|
|
* getWaitQueueLength throws IMSE if not locked |
529 |
|
|
*/ |
530 |
|
|
public void testGetWaitQueueLengthIMSE() { |
531 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
532 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
533 |
dl |
1.13 |
try { |
534 |
|
|
lock.getWaitQueueLength(c); |
535 |
|
|
shouldThrow(); |
536 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
537 |
dl |
1.13 |
} |
538 |
|
|
|
539 |
|
|
|
540 |
|
|
/** |
541 |
|
|
* getWaitingThreads throws IAE if not owned |
542 |
|
|
*/ |
543 |
|
|
public void testGetWaitingThreadsIAE() { |
544 |
jsr166 |
1.30 |
final PublicReentrantLock lock = new PublicReentrantLock(); |
545 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
546 |
jsr166 |
1.30 |
final PublicReentrantLock lock2 = new PublicReentrantLock(); |
547 |
dl |
1.13 |
try { |
548 |
|
|
lock2.getWaitingThreads(c); |
549 |
|
|
shouldThrow(); |
550 |
jsr166 |
1.29 |
} catch (IllegalArgumentException success) {} |
551 |
dl |
1.13 |
} |
552 |
|
|
|
553 |
|
|
/** |
554 |
|
|
* getWaitingThreads throws IMSE if not locked |
555 |
|
|
*/ |
556 |
|
|
public void testGetWaitingThreadsIMSE() { |
557 |
jsr166 |
1.30 |
final PublicReentrantLock lock = new PublicReentrantLock(); |
558 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
559 |
dl |
1.13 |
try { |
560 |
|
|
lock.getWaitingThreads(c); |
561 |
|
|
shouldThrow(); |
562 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
563 |
dl |
1.13 |
} |
564 |
|
|
|
565 |
|
|
|
566 |
|
|
/** |
567 |
dl |
1.6 |
* hasWaiters returns true when a thread is waiting, else false |
568 |
|
|
*/ |
569 |
jsr166 |
1.29 |
public void testHasWaiters() throws InterruptedException { |
570 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
571 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
572 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
573 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
574 |
|
|
lock.lock(); |
575 |
jsr166 |
1.37 |
assertFalse(lock.hasWaiters(c)); |
576 |
|
|
assertEquals(0, lock.getWaitQueueLength(c)); |
577 |
jsr166 |
1.29 |
c.await(); |
578 |
|
|
lock.unlock(); |
579 |
|
|
}}); |
580 |
dl |
1.2 |
|
581 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
582 |
jsr166 |
1.29 |
lock.lock(); |
583 |
|
|
assertTrue(lock.hasWaiters(c)); |
584 |
|
|
assertEquals(1, lock.getWaitQueueLength(c)); |
585 |
|
|
c.signal(); |
586 |
|
|
lock.unlock(); |
587 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
588 |
jsr166 |
1.29 |
lock.lock(); |
589 |
|
|
assertFalse(lock.hasWaiters(c)); |
590 |
|
|
assertEquals(0, lock.getWaitQueueLength(c)); |
591 |
|
|
lock.unlock(); |
592 |
|
|
t.join(SHORT_DELAY_MS); |
593 |
|
|
assertFalse(t.isAlive()); |
594 |
dl |
1.5 |
} |
595 |
|
|
|
596 |
dl |
1.6 |
/** |
597 |
|
|
* getWaitQueueLength returns number of waiting threads |
598 |
|
|
*/ |
599 |
jsr166 |
1.29 |
public void testGetWaitQueueLength() throws InterruptedException { |
600 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
601 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
602 |
jsr166 |
1.41 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
603 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
604 |
|
|
lock.lock(); |
605 |
jsr166 |
1.37 |
assertFalse(lock.hasWaiters(c)); |
606 |
|
|
assertEquals(0, lock.getWaitQueueLength(c)); |
607 |
jsr166 |
1.29 |
c.await(); |
608 |
|
|
lock.unlock(); |
609 |
|
|
}}); |
610 |
dl |
1.13 |
|
611 |
jsr166 |
1.41 |
delay(SHORT_DELAY_MS); |
612 |
|
|
|
613 |
|
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
614 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
615 |
|
|
lock.lock(); |
616 |
jsr166 |
1.37 |
assertTrue(lock.hasWaiters(c)); |
617 |
|
|
assertEquals(1, lock.getWaitQueueLength(c)); |
618 |
jsr166 |
1.29 |
c.await(); |
619 |
|
|
lock.unlock(); |
620 |
|
|
}}); |
621 |
|
|
|
622 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
623 |
jsr166 |
1.29 |
lock.lock(); |
624 |
|
|
assertTrue(lock.hasWaiters(c)); |
625 |
|
|
assertEquals(2, lock.getWaitQueueLength(c)); |
626 |
|
|
c.signalAll(); |
627 |
|
|
lock.unlock(); |
628 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
629 |
jsr166 |
1.29 |
lock.lock(); |
630 |
|
|
assertFalse(lock.hasWaiters(c)); |
631 |
|
|
assertEquals(0, lock.getWaitQueueLength(c)); |
632 |
|
|
lock.unlock(); |
633 |
|
|
t1.join(SHORT_DELAY_MS); |
634 |
|
|
t2.join(SHORT_DELAY_MS); |
635 |
|
|
assertFalse(t1.isAlive()); |
636 |
|
|
assertFalse(t2.isAlive()); |
637 |
dl |
1.13 |
} |
638 |
|
|
|
639 |
|
|
/** |
640 |
|
|
* getWaitingThreads returns only and all waiting threads |
641 |
|
|
*/ |
642 |
jsr166 |
1.29 |
public void testGetWaitingThreads() throws InterruptedException { |
643 |
jsr166 |
1.30 |
final PublicReentrantLock lock = new PublicReentrantLock(); |
644 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
645 |
jsr166 |
1.30 |
Thread t1 = new Thread(new CheckedRunnable() { |
646 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
647 |
|
|
lock.lock(); |
648 |
jsr166 |
1.37 |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
649 |
jsr166 |
1.29 |
c.await(); |
650 |
|
|
lock.unlock(); |
651 |
|
|
}}); |
652 |
|
|
|
653 |
jsr166 |
1.30 |
Thread t2 = new Thread(new CheckedRunnable() { |
654 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
655 |
|
|
lock.lock(); |
656 |
jsr166 |
1.37 |
assertFalse(lock.getWaitingThreads(c).isEmpty()); |
657 |
jsr166 |
1.29 |
c.await(); |
658 |
|
|
lock.unlock(); |
659 |
|
|
}}); |
660 |
dl |
1.5 |
|
661 |
jsr166 |
1.29 |
lock.lock(); |
662 |
|
|
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
663 |
|
|
lock.unlock(); |
664 |
|
|
t1.start(); |
665 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
666 |
jsr166 |
1.29 |
t2.start(); |
667 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
668 |
jsr166 |
1.29 |
lock.lock(); |
669 |
|
|
assertTrue(lock.hasWaiters(c)); |
670 |
|
|
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
671 |
|
|
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
672 |
|
|
c.signalAll(); |
673 |
|
|
lock.unlock(); |
674 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
675 |
jsr166 |
1.29 |
lock.lock(); |
676 |
|
|
assertFalse(lock.hasWaiters(c)); |
677 |
|
|
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
678 |
|
|
lock.unlock(); |
679 |
|
|
t1.join(SHORT_DELAY_MS); |
680 |
|
|
t2.join(SHORT_DELAY_MS); |
681 |
|
|
assertFalse(t1.isAlive()); |
682 |
|
|
assertFalse(t2.isAlive()); |
683 |
dl |
1.2 |
} |
684 |
dl |
1.13 |
|
685 |
dl |
1.22 |
/** A helper class for uninterruptible wait tests */ |
686 |
jsr166 |
1.29 |
class UninterruptibleThread extends Thread { |
687 |
dl |
1.22 |
private ReentrantLock lock; |
688 |
|
|
private Condition c; |
689 |
jsr166 |
1.26 |
|
690 |
dl |
1.22 |
public volatile boolean canAwake = false; |
691 |
|
|
public volatile boolean interrupted = false; |
692 |
|
|
public volatile boolean lockStarted = false; |
693 |
jsr166 |
1.26 |
|
694 |
jsr166 |
1.29 |
public UninterruptibleThread(ReentrantLock lock, Condition c) { |
695 |
dl |
1.22 |
this.lock = lock; |
696 |
|
|
this.c = c; |
697 |
|
|
} |
698 |
jsr166 |
1.26 |
|
699 |
dl |
1.22 |
public synchronized void run() { |
700 |
|
|
lock.lock(); |
701 |
|
|
lockStarted = true; |
702 |
jsr166 |
1.26 |
|
703 |
dl |
1.22 |
while (!canAwake) { |
704 |
|
|
c.awaitUninterruptibly(); |
705 |
|
|
} |
706 |
jsr166 |
1.26 |
|
707 |
dl |
1.22 |
interrupted = isInterrupted(); |
708 |
|
|
lock.unlock(); |
709 |
|
|
} |
710 |
|
|
} |
711 |
dl |
1.2 |
|
712 |
dl |
1.6 |
/** |
713 |
|
|
* awaitUninterruptibly doesn't abort on interrupt |
714 |
|
|
*/ |
715 |
jsr166 |
1.29 |
public void testAwaitUninterruptibly() throws InterruptedException { |
716 |
dl |
1.22 |
final ReentrantLock lock = new ReentrantLock(); |
717 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
718 |
jsr166 |
1.29 |
UninterruptibleThread thread = new UninterruptibleThread(lock, c); |
719 |
dl |
1.2 |
|
720 |
jsr166 |
1.29 |
thread.start(); |
721 |
dl |
1.22 |
|
722 |
jsr166 |
1.29 |
while (!thread.lockStarted) { |
723 |
dl |
1.40 |
delay(100); |
724 |
jsr166 |
1.29 |
} |
725 |
dl |
1.22 |
|
726 |
jsr166 |
1.29 |
lock.lock(); |
727 |
|
|
try { |
728 |
|
|
thread.interrupt(); |
729 |
|
|
thread.canAwake = true; |
730 |
|
|
c.signal(); |
731 |
|
|
} finally { |
732 |
|
|
lock.unlock(); |
733 |
|
|
} |
734 |
dl |
1.22 |
|
735 |
jsr166 |
1.29 |
thread.join(); |
736 |
|
|
assertTrue(thread.interrupted); |
737 |
|
|
assertFalse(thread.isAlive()); |
738 |
dl |
1.2 |
} |
739 |
|
|
|
740 |
dl |
1.6 |
/** |
741 |
|
|
* await is interruptible |
742 |
|
|
*/ |
743 |
jsr166 |
1.29 |
public void testAwait_Interrupt() throws InterruptedException { |
744 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
745 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
746 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
747 |
jsr166 |
1.30 |
public void realRun() throws InterruptedException { |
748 |
jsr166 |
1.29 |
lock.lock(); |
749 |
|
|
c.await(); |
750 |
|
|
}}); |
751 |
|
|
|
752 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
753 |
jsr166 |
1.29 |
t.interrupt(); |
754 |
|
|
t.join(SHORT_DELAY_MS); |
755 |
|
|
assertFalse(t.isAlive()); |
756 |
dl |
1.2 |
} |
757 |
|
|
|
758 |
dl |
1.6 |
/** |
759 |
|
|
* awaitNanos is interruptible |
760 |
|
|
*/ |
761 |
jsr166 |
1.29 |
public void testAwaitNanos_Interrupt() throws InterruptedException { |
762 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
763 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
764 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
765 |
jsr166 |
1.30 |
public void realRun() throws InterruptedException { |
766 |
jsr166 |
1.29 |
lock.lock(); |
767 |
jsr166 |
1.33 |
c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); |
768 |
jsr166 |
1.29 |
}}); |
769 |
|
|
|
770 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
771 |
jsr166 |
1.29 |
t.interrupt(); |
772 |
|
|
t.join(SHORT_DELAY_MS); |
773 |
|
|
assertFalse(t.isAlive()); |
774 |
dl |
1.2 |
} |
775 |
|
|
|
776 |
dl |
1.6 |
/** |
777 |
|
|
* awaitUntil is interruptible |
778 |
|
|
*/ |
779 |
jsr166 |
1.29 |
public void testAwaitUntil_Interrupt() throws InterruptedException { |
780 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
781 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
782 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
783 |
jsr166 |
1.30 |
public void realRun() throws InterruptedException { |
784 |
jsr166 |
1.29 |
lock.lock(); |
785 |
|
|
java.util.Date d = new java.util.Date(); |
786 |
|
|
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
787 |
|
|
}}); |
788 |
|
|
|
789 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
790 |
jsr166 |
1.29 |
t.interrupt(); |
791 |
|
|
t.join(SHORT_DELAY_MS); |
792 |
|
|
assertFalse(t.isAlive()); |
793 |
dl |
1.2 |
} |
794 |
|
|
|
795 |
dl |
1.6 |
/** |
796 |
|
|
* signalAll wakes up all threads |
797 |
|
|
*/ |
798 |
jsr166 |
1.29 |
public void testSignalAll() throws InterruptedException { |
799 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
800 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
801 |
jsr166 |
1.41 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
802 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
803 |
|
|
lock.lock(); |
804 |
|
|
c.await(); |
805 |
|
|
lock.unlock(); |
806 |
|
|
}}); |
807 |
|
|
|
808 |
jsr166 |
1.41 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
809 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
810 |
|
|
lock.lock(); |
811 |
|
|
c.await(); |
812 |
|
|
lock.unlock(); |
813 |
|
|
}}); |
814 |
dl |
1.2 |
|
815 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
816 |
jsr166 |
1.29 |
lock.lock(); |
817 |
|
|
c.signalAll(); |
818 |
|
|
lock.unlock(); |
819 |
|
|
t1.join(SHORT_DELAY_MS); |
820 |
|
|
t2.join(SHORT_DELAY_MS); |
821 |
|
|
assertFalse(t1.isAlive()); |
822 |
|
|
assertFalse(t2.isAlive()); |
823 |
dl |
1.3 |
} |
824 |
|
|
|
825 |
dl |
1.6 |
/** |
826 |
dl |
1.23 |
* await after multiple reentrant locking preserves lock count |
827 |
|
|
*/ |
828 |
jsr166 |
1.29 |
public void testAwaitLockCount() throws InterruptedException { |
829 |
jsr166 |
1.30 |
final ReentrantLock lock = new ReentrantLock(); |
830 |
dl |
1.23 |
final Condition c = lock.newCondition(); |
831 |
jsr166 |
1.41 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
832 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
833 |
|
|
lock.lock(); |
834 |
jsr166 |
1.37 |
assertEquals(1, lock.getHoldCount()); |
835 |
jsr166 |
1.29 |
c.await(); |
836 |
jsr166 |
1.37 |
assertEquals(1, lock.getHoldCount()); |
837 |
jsr166 |
1.29 |
lock.unlock(); |
838 |
|
|
}}); |
839 |
dl |
1.23 |
|
840 |
jsr166 |
1.41 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
841 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
842 |
|
|
lock.lock(); |
843 |
|
|
lock.lock(); |
844 |
jsr166 |
1.37 |
assertEquals(2, lock.getHoldCount()); |
845 |
jsr166 |
1.29 |
c.await(); |
846 |
jsr166 |
1.37 |
assertEquals(2, lock.getHoldCount()); |
847 |
jsr166 |
1.29 |
lock.unlock(); |
848 |
|
|
lock.unlock(); |
849 |
|
|
}}); |
850 |
|
|
|
851 |
dl |
1.40 |
delay(SHORT_DELAY_MS); |
852 |
jsr166 |
1.29 |
lock.lock(); |
853 |
|
|
c.signalAll(); |
854 |
|
|
lock.unlock(); |
855 |
|
|
t1.join(SHORT_DELAY_MS); |
856 |
|
|
t2.join(SHORT_DELAY_MS); |
857 |
|
|
assertFalse(t1.isAlive()); |
858 |
|
|
assertFalse(t2.isAlive()); |
859 |
dl |
1.23 |
} |
860 |
|
|
|
861 |
|
|
/** |
862 |
dl |
1.6 |
* A serialized lock deserializes as unlocked |
863 |
|
|
*/ |
864 |
jsr166 |
1.29 |
public void testSerialization() throws Exception { |
865 |
dl |
1.3 |
ReentrantLock l = new ReentrantLock(); |
866 |
|
|
l.lock(); |
867 |
|
|
l.unlock(); |
868 |
|
|
|
869 |
jsr166 |
1.29 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
870 |
|
|
ObjectOutputStream out = |
871 |
|
|
new ObjectOutputStream(new BufferedOutputStream(bout)); |
872 |
|
|
out.writeObject(l); |
873 |
|
|
out.close(); |
874 |
jsr166 |
1.35 |
|
875 |
jsr166 |
1.29 |
ByteArrayInputStream bin = |
876 |
|
|
new ByteArrayInputStream(bout.toByteArray()); |
877 |
|
|
ObjectInputStream in = |
878 |
|
|
new ObjectInputStream(new BufferedInputStream(bin)); |
879 |
|
|
ReentrantLock r = (ReentrantLock) in.readObject(); |
880 |
|
|
r.lock(); |
881 |
|
|
r.unlock(); |
882 |
dl |
1.2 |
} |
883 |
dl |
1.1 |
|
884 |
dl |
1.18 |
/** |
885 |
|
|
* toString indicates current lock state |
886 |
|
|
*/ |
887 |
|
|
public void testToString() { |
888 |
|
|
ReentrantLock lock = new ReentrantLock(); |
889 |
|
|
String us = lock.toString(); |
890 |
|
|
assertTrue(us.indexOf("Unlocked") >= 0); |
891 |
|
|
lock.lock(); |
892 |
|
|
String ls = lock.toString(); |
893 |
|
|
assertTrue(ls.indexOf("Locked") >= 0); |
894 |
|
|
} |
895 |
|
|
|
896 |
dl |
1.1 |
} |