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dl |
1.1 |
/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
3 |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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*/ |
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import junit.framework.*; |
9 |
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import java.util.concurrent.locks.*; |
10 |
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import java.util.concurrent.*; |
11 |
dl |
1.5 |
import java.util.*; |
12 |
dl |
1.3 |
import java.io.*; |
13 |
dl |
1.1 |
|
14 |
dl |
1.4 |
public class ReentrantLockTest extends JSR166TestCase { |
15 |
dl |
1.1 |
public static void main(String[] args) { |
16 |
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junit.textui.TestRunner.run (suite()); |
17 |
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} |
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public static Test suite() { |
19 |
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return new TestSuite(ReentrantLockTest.class); |
20 |
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} |
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22 |
dl |
1.6 |
/** |
23 |
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* A runnable calling lockInterruptibly |
24 |
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*/ |
25 |
dl |
1.5 |
class InterruptibleLockRunnable implements Runnable { |
26 |
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final ReentrantLock lock; |
27 |
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InterruptibleLockRunnable(ReentrantLock l) { lock = l; } |
28 |
dl |
1.6 |
public void run() { |
29 |
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try { |
30 |
dl |
1.5 |
lock.lockInterruptibly(); |
31 |
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} catch(InterruptedException success){} |
32 |
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} |
33 |
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} |
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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 |
dl |
1.5 |
class InterruptedLockRunnable implements Runnable { |
41 |
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final ReentrantLock lock; |
42 |
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InterruptedLockRunnable(ReentrantLock l) { lock = l; } |
43 |
dl |
1.6 |
public void run() { |
44 |
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try { |
45 |
dl |
1.5 |
lock.lockInterruptibly(); |
46 |
dl |
1.6 |
threadShouldThrow(); |
47 |
dl |
1.5 |
} catch(InterruptedException success){} |
48 |
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} |
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} |
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/** |
52 |
dl |
1.6 |
* Subclass to expose protected methods |
53 |
dl |
1.5 |
*/ |
54 |
dl |
1.6 |
static class PublicReentrantLock extends ReentrantLock { |
55 |
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PublicReentrantLock() { super(); } |
56 |
dl |
1.5 |
public Collection<Thread> getQueuedThreads() { |
57 |
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return super.getQueuedThreads(); |
58 |
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} |
59 |
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public ConditionObject newCondition() { |
60 |
dl |
1.6 |
return new PublicCondition(this); |
61 |
dl |
1.5 |
} |
62 |
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63 |
dl |
1.6 |
static class PublicCondition extends ReentrantLock.ConditionObject { |
64 |
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PublicCondition(PublicReentrantLock l) { super(l); } |
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dl |
1.5 |
public Collection<Thread> getWaitingThreads() { |
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return super.getWaitingThreads(); |
67 |
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} |
68 |
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} |
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70 |
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} |
71 |
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72 |
dl |
1.1 |
/* |
73 |
dl |
1.6 |
* locking an unlocked lock succeeds |
74 |
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*/ |
75 |
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public void testLock() { |
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ReentrantLock rl = new ReentrantLock(); |
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rl.lock(); |
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assertTrue(rl.isLocked()); |
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rl.unlock(); |
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} |
81 |
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82 |
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/* |
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* locking an unlocked fair lock succeeds |
84 |
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*/ |
85 |
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public void testFairLock() { |
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ReentrantLock rl = new ReentrantLock(true); |
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rl.lock(); |
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assertTrue(rl.isLocked()); |
89 |
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rl.unlock(); |
90 |
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} |
91 |
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92 |
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/* |
93 |
dl |
1.5 |
* Unlocking an unlocked lock throws IllegalMonitorStateException |
94 |
dl |
1.1 |
*/ |
95 |
dl |
1.6 |
public void testUnlock_IllegalMonitorStateException() { |
96 |
dl |
1.1 |
ReentrantLock rl = new ReentrantLock(); |
97 |
dl |
1.6 |
try { |
98 |
dl |
1.1 |
rl.unlock(); |
99 |
dl |
1.6 |
shouldThrow(); |
100 |
dl |
1.1 |
|
101 |
dl |
1.3 |
} catch(IllegalMonitorStateException success){} |
102 |
dl |
1.5 |
} |
103 |
dl |
1.1 |
|
104 |
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/* |
105 |
dl |
1.6 |
* trylock on an unlocked lock succeeds |
106 |
dl |
1.1 |
*/ |
107 |
dl |
1.6 |
public void testTryLock() { |
108 |
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ReentrantLock rl = new ReentrantLock(); |
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assertTrue(rl.tryLock()); |
110 |
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assertTrue(rl.isLocked()); |
111 |
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rl.unlock(); |
112 |
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} |
113 |
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114 |
dl |
1.1 |
|
115 |
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/* |
116 |
dl |
1.7 |
* getQueueLength reports number of waiting threads |
117 |
dl |
1.1 |
*/ |
118 |
dl |
1.7 |
public void testGetQueueLength() { |
119 |
dl |
1.5 |
final ReentrantLock lock = new ReentrantLock(); |
120 |
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Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
121 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
122 |
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try { |
123 |
dl |
1.7 |
assertEquals(0, lock.getQueueLength()); |
124 |
dl |
1.5 |
lock.lock(); |
125 |
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t1.start(); |
126 |
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Thread.sleep(SHORT_DELAY_MS); |
127 |
dl |
1.7 |
assertEquals(1, lock.getQueueLength()); |
128 |
dl |
1.5 |
t2.start(); |
129 |
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Thread.sleep(SHORT_DELAY_MS); |
130 |
dl |
1.7 |
assertEquals(2, lock.getQueueLength()); |
131 |
dl |
1.5 |
t1.interrupt(); |
132 |
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Thread.sleep(SHORT_DELAY_MS); |
133 |
dl |
1.7 |
assertEquals(1, lock.getQueueLength()); |
134 |
dl |
1.5 |
lock.unlock(); |
135 |
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Thread.sleep(SHORT_DELAY_MS); |
136 |
dl |
1.7 |
assertEquals(0, lock.getQueueLength()); |
137 |
dl |
1.5 |
t1.join(); |
138 |
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t2.join(); |
139 |
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} catch(Exception e){ |
140 |
dl |
1.6 |
unexpectedException(); |
141 |
dl |
1.5 |
} |
142 |
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} |
143 |
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144 |
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/* |
145 |
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* getQueuedThreads includes waiting threads |
146 |
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*/ |
147 |
dl |
1.6 |
public void testGetQueuedThreads() { |
148 |
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final PublicReentrantLock lock = new PublicReentrantLock(); |
149 |
dl |
1.5 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
150 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
151 |
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try { |
152 |
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assertTrue(lock.getQueuedThreads().isEmpty()); |
153 |
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lock.lock(); |
154 |
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assertTrue(lock.getQueuedThreads().isEmpty()); |
155 |
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t1.start(); |
156 |
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Thread.sleep(SHORT_DELAY_MS); |
157 |
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assertTrue(lock.getQueuedThreads().contains(t1)); |
158 |
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t2.start(); |
159 |
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Thread.sleep(SHORT_DELAY_MS); |
160 |
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assertTrue(lock.getQueuedThreads().contains(t1)); |
161 |
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assertTrue(lock.getQueuedThreads().contains(t2)); |
162 |
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t1.interrupt(); |
163 |
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Thread.sleep(SHORT_DELAY_MS); |
164 |
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assertFalse(lock.getQueuedThreads().contains(t1)); |
165 |
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assertTrue(lock.getQueuedThreads().contains(t2)); |
166 |
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lock.unlock(); |
167 |
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Thread.sleep(SHORT_DELAY_MS); |
168 |
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assertTrue(lock.getQueuedThreads().isEmpty()); |
169 |
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t1.join(); |
170 |
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t2.join(); |
171 |
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} catch(Exception e){ |
172 |
dl |
1.6 |
unexpectedException(); |
173 |
dl |
1.5 |
} |
174 |
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} |
175 |
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|
176 |
dl |
1.1 |
|
177 |
dl |
1.5 |
/* |
178 |
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* timed trylock is interruptible. |
179 |
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*/ |
180 |
dl |
1.6 |
public void testInterruptedException2() { |
181 |
dl |
1.1 |
final ReentrantLock lock = new ReentrantLock(); |
182 |
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lock.lock(); |
183 |
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Thread t = new Thread(new Runnable() { |
184 |
dl |
1.6 |
public void run() { |
185 |
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try { |
186 |
dl |
1.4 |
lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS); |
187 |
dl |
1.6 |
threadShouldThrow(); |
188 |
dl |
1.3 |
} catch(InterruptedException success){} |
189 |
dl |
1.1 |
} |
190 |
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}); |
191 |
dl |
1.4 |
try { |
192 |
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t.start(); |
193 |
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t.interrupt(); |
194 |
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} catch(Exception e){ |
195 |
dl |
1.6 |
unexpectedException(); |
196 |
dl |
1.4 |
} |
197 |
dl |
1.1 |
} |
198 |
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|
199 |
dl |
1.3 |
|
200 |
dl |
1.5 |
/** |
201 |
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* Trylock on a locked lock fails |
202 |
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*/ |
203 |
dl |
1.3 |
public void testTryLockWhenLocked() { |
204 |
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final ReentrantLock lock = new ReentrantLock(); |
205 |
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lock.lock(); |
206 |
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Thread t = new Thread(new Runnable() { |
207 |
dl |
1.6 |
public void run() { |
208 |
dl |
1.4 |
threadAssertFalse(lock.tryLock()); |
209 |
dl |
1.3 |
} |
210 |
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}); |
211 |
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try { |
212 |
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t.start(); |
213 |
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t.join(); |
214 |
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lock.unlock(); |
215 |
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} catch(Exception e){ |
216 |
dl |
1.6 |
unexpectedException(); |
217 |
dl |
1.3 |
} |
218 |
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} |
219 |
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|
220 |
dl |
1.5 |
/** |
221 |
dl |
1.6 |
* Timed trylock on a locked lock times out |
222 |
dl |
1.5 |
*/ |
223 |
dl |
1.6 |
public void testTryLock_Timeout() { |
224 |
dl |
1.3 |
final ReentrantLock lock = new ReentrantLock(); |
225 |
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lock.lock(); |
226 |
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Thread t = new Thread(new Runnable() { |
227 |
dl |
1.6 |
public void run() { |
228 |
dl |
1.3 |
try { |
229 |
dl |
1.4 |
threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
230 |
dl |
1.3 |
} catch (Exception ex) { |
231 |
dl |
1.6 |
threadUnexpectedException(); |
232 |
dl |
1.3 |
} |
233 |
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} |
234 |
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}); |
235 |
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try { |
236 |
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t.start(); |
237 |
|
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t.join(); |
238 |
|
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lock.unlock(); |
239 |
|
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} catch(Exception e){ |
240 |
dl |
1.6 |
unexpectedException(); |
241 |
dl |
1.3 |
} |
242 |
|
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} |
243 |
dl |
1.1 |
|
244 |
dl |
1.5 |
/** |
245 |
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* getHoldCount returns number of recursive holds |
246 |
|
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*/ |
247 |
dl |
1.1 |
public void testGetHoldCount() { |
248 |
|
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ReentrantLock lock = new ReentrantLock(); |
249 |
dl |
1.6 |
for(int i = 1; i <= SIZE; i++) { |
250 |
dl |
1.1 |
lock.lock(); |
251 |
|
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assertEquals(i,lock.getHoldCount()); |
252 |
|
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} |
253 |
dl |
1.6 |
for(int i = SIZE; i > 0; i--) { |
254 |
dl |
1.1 |
lock.unlock(); |
255 |
|
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assertEquals(i-1,lock.getHoldCount()); |
256 |
|
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} |
257 |
|
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} |
258 |
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|
259 |
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|
260 |
dl |
1.5 |
/** |
261 |
|
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* isLocked is true when locked and false when not |
262 |
|
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*/ |
263 |
dl |
1.1 |
public void testIsLocked() { |
264 |
|
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final ReentrantLock lock = new ReentrantLock(); |
265 |
|
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lock.lock(); |
266 |
|
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assertTrue(lock.isLocked()); |
267 |
|
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lock.unlock(); |
268 |
|
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assertFalse(lock.isLocked()); |
269 |
|
|
Thread t = new Thread(new Runnable() { |
270 |
|
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public void run() { |
271 |
|
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lock.lock(); |
272 |
|
|
try { |
273 |
dl |
1.4 |
Thread.sleep(SMALL_DELAY_MS); |
274 |
dl |
1.1 |
} |
275 |
dl |
1.4 |
catch(Exception e) { |
276 |
dl |
1.6 |
threadUnexpectedException(); |
277 |
dl |
1.4 |
} |
278 |
dl |
1.1 |
lock.unlock(); |
279 |
|
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} |
280 |
|
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}); |
281 |
dl |
1.6 |
try { |
282 |
dl |
1.1 |
t.start(); |
283 |
|
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Thread.sleep(SHORT_DELAY_MS); |
284 |
|
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assertTrue(lock.isLocked()); |
285 |
|
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t.join(); |
286 |
|
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assertFalse(lock.isLocked()); |
287 |
|
|
} catch(Exception e){ |
288 |
dl |
1.6 |
unexpectedException(); |
289 |
dl |
1.1 |
} |
290 |
|
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} |
291 |
|
|
|
292 |
|
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|
293 |
dl |
1.6 |
/* |
294 |
|
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* lockInterruptibly is interruptible. |
295 |
|
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*/ |
296 |
|
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public void testLockInterruptibly1() { |
297 |
|
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final ReentrantLock lock = new ReentrantLock(); |
298 |
|
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lock.lock(); |
299 |
|
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Thread t = new Thread(new InterruptedLockRunnable(lock)); |
300 |
|
|
try { |
301 |
|
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t.start(); |
302 |
|
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t.interrupt(); |
303 |
|
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lock.unlock(); |
304 |
|
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t.join(); |
305 |
|
|
} catch(Exception e){ |
306 |
|
|
unexpectedException(); |
307 |
|
|
} |
308 |
|
|
} |
309 |
|
|
|
310 |
dl |
1.5 |
/** |
311 |
|
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* lockInterruptibly succeeds when unlocked, else is interruptible |
312 |
|
|
*/ |
313 |
dl |
1.6 |
public void testLockInterruptibly2() { |
314 |
dl |
1.1 |
final ReentrantLock lock = new ReentrantLock(); |
315 |
dl |
1.3 |
try { |
316 |
|
|
lock.lockInterruptibly(); |
317 |
|
|
} catch(Exception e) { |
318 |
dl |
1.6 |
unexpectedException(); |
319 |
dl |
1.3 |
} |
320 |
dl |
1.5 |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
321 |
dl |
1.3 |
try { |
322 |
|
|
t.start(); |
323 |
|
|
t.interrupt(); |
324 |
|
|
assertTrue(lock.isLocked()); |
325 |
|
|
assertTrue(lock.isHeldByCurrentThread()); |
326 |
|
|
t.join(); |
327 |
|
|
} catch(Exception e){ |
328 |
dl |
1.6 |
unexpectedException(); |
329 |
dl |
1.3 |
} |
330 |
dl |
1.1 |
} |
331 |
dl |
1.2 |
|
332 |
dl |
1.6 |
/** |
333 |
|
|
* Calling await without holding lock throws IllegalMonitorStateException |
334 |
|
|
*/ |
335 |
dl |
1.2 |
public void testAwait_IllegalMonitor() { |
336 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
337 |
|
|
final Condition c = lock.newCondition(); |
338 |
|
|
try { |
339 |
|
|
c.await(); |
340 |
dl |
1.6 |
shouldThrow(); |
341 |
dl |
1.2 |
} |
342 |
|
|
catch (IllegalMonitorStateException success) { |
343 |
|
|
} |
344 |
|
|
catch (Exception ex) { |
345 |
dl |
1.6 |
unexpectedException(); |
346 |
dl |
1.2 |
} |
347 |
|
|
} |
348 |
|
|
|
349 |
dl |
1.6 |
/** |
350 |
|
|
* Calling signal without holding lock throws IllegalMonitorStateException |
351 |
|
|
*/ |
352 |
dl |
1.2 |
public void testSignal_IllegalMonitor() { |
353 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
354 |
|
|
final Condition c = lock.newCondition(); |
355 |
|
|
try { |
356 |
|
|
c.signal(); |
357 |
dl |
1.6 |
shouldThrow(); |
358 |
dl |
1.2 |
} |
359 |
|
|
catch (IllegalMonitorStateException success) { |
360 |
|
|
} |
361 |
|
|
catch (Exception ex) { |
362 |
dl |
1.6 |
unexpectedException(); |
363 |
dl |
1.2 |
} |
364 |
|
|
} |
365 |
|
|
|
366 |
dl |
1.6 |
/** |
367 |
|
|
* awaitNanos without a signal times out |
368 |
|
|
*/ |
369 |
dl |
1.2 |
public void testAwaitNanos_Timeout() { |
370 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
371 |
|
|
final Condition c = lock.newCondition(); |
372 |
|
|
try { |
373 |
|
|
lock.lock(); |
374 |
|
|
long t = c.awaitNanos(100); |
375 |
|
|
assertTrue(t <= 0); |
376 |
|
|
lock.unlock(); |
377 |
|
|
} |
378 |
|
|
catch (Exception ex) { |
379 |
dl |
1.6 |
unexpectedException(); |
380 |
dl |
1.2 |
} |
381 |
|
|
} |
382 |
|
|
|
383 |
dl |
1.6 |
/** |
384 |
|
|
* timed await without a signal times out |
385 |
|
|
*/ |
386 |
dl |
1.2 |
public void testAwait_Timeout() { |
387 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
388 |
|
|
final Condition c = lock.newCondition(); |
389 |
|
|
try { |
390 |
|
|
lock.lock(); |
391 |
dl |
1.4 |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
392 |
dl |
1.2 |
lock.unlock(); |
393 |
|
|
} |
394 |
|
|
catch (Exception ex) { |
395 |
dl |
1.6 |
unexpectedException(); |
396 |
dl |
1.2 |
} |
397 |
|
|
} |
398 |
|
|
|
399 |
dl |
1.6 |
/** |
400 |
|
|
* awaitUntil without a signal times out |
401 |
|
|
*/ |
402 |
dl |
1.2 |
public void testAwaitUntil_Timeout() { |
403 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
404 |
|
|
final Condition c = lock.newCondition(); |
405 |
|
|
try { |
406 |
|
|
lock.lock(); |
407 |
|
|
java.util.Date d = new java.util.Date(); |
408 |
|
|
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
409 |
|
|
lock.unlock(); |
410 |
|
|
} |
411 |
|
|
catch (Exception ex) { |
412 |
dl |
1.6 |
unexpectedException(); |
413 |
dl |
1.2 |
} |
414 |
|
|
} |
415 |
|
|
|
416 |
dl |
1.6 |
/** |
417 |
|
|
* await returns when signalled |
418 |
|
|
*/ |
419 |
dl |
1.2 |
public void testAwait() { |
420 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
421 |
dl |
1.5 |
final ReentrantLock.ConditionObject c = lock.newCondition(); |
422 |
|
|
Thread t = new Thread(new Runnable() { |
423 |
|
|
public void run() { |
424 |
|
|
try { |
425 |
|
|
lock.lock(); |
426 |
|
|
c.await(); |
427 |
|
|
lock.unlock(); |
428 |
|
|
} |
429 |
|
|
catch(InterruptedException e) { |
430 |
dl |
1.6 |
threadUnexpectedException(); |
431 |
dl |
1.5 |
} |
432 |
|
|
} |
433 |
|
|
}); |
434 |
|
|
|
435 |
|
|
try { |
436 |
|
|
t.start(); |
437 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
438 |
|
|
lock.lock(); |
439 |
|
|
c.signal(); |
440 |
|
|
lock.unlock(); |
441 |
|
|
t.join(SHORT_DELAY_MS); |
442 |
|
|
assertFalse(t.isAlive()); |
443 |
|
|
} |
444 |
|
|
catch (Exception ex) { |
445 |
dl |
1.6 |
unexpectedException(); |
446 |
dl |
1.5 |
} |
447 |
|
|
} |
448 |
|
|
|
449 |
dl |
1.6 |
/** |
450 |
|
|
* hasWaiters returns true when a thread is waiting, else false |
451 |
|
|
*/ |
452 |
dl |
1.5 |
public void testHasWaiters() { |
453 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
454 |
|
|
final ReentrantLock.ConditionObject c = lock.newCondition(); |
455 |
dl |
1.2 |
Thread t = new Thread(new Runnable() { |
456 |
|
|
public void run() { |
457 |
|
|
try { |
458 |
|
|
lock.lock(); |
459 |
dl |
1.5 |
threadAssertFalse(c.hasWaiters()); |
460 |
|
|
threadAssertEquals(0, c.getWaitQueueLength()); |
461 |
dl |
1.2 |
c.await(); |
462 |
|
|
lock.unlock(); |
463 |
|
|
} |
464 |
|
|
catch(InterruptedException e) { |
465 |
dl |
1.6 |
threadUnexpectedException(); |
466 |
dl |
1.2 |
} |
467 |
|
|
} |
468 |
|
|
}); |
469 |
|
|
|
470 |
|
|
try { |
471 |
|
|
t.start(); |
472 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
473 |
|
|
lock.lock(); |
474 |
dl |
1.5 |
assertTrue(c.hasWaiters()); |
475 |
|
|
assertEquals(1, c.getWaitQueueLength()); |
476 |
dl |
1.2 |
c.signal(); |
477 |
|
|
lock.unlock(); |
478 |
dl |
1.5 |
Thread.sleep(SHORT_DELAY_MS); |
479 |
|
|
lock.lock(); |
480 |
|
|
assertFalse(c.hasWaiters()); |
481 |
|
|
assertEquals(0, c.getWaitQueueLength()); |
482 |
|
|
lock.unlock(); |
483 |
dl |
1.2 |
t.join(SHORT_DELAY_MS); |
484 |
|
|
assertFalse(t.isAlive()); |
485 |
dl |
1.5 |
} |
486 |
|
|
catch (Exception ex) { |
487 |
dl |
1.6 |
unexpectedException(); |
488 |
dl |
1.5 |
} |
489 |
|
|
} |
490 |
|
|
|
491 |
dl |
1.6 |
/** |
492 |
|
|
* getWaitQueueLength returns number of waiting threads |
493 |
|
|
*/ |
494 |
dl |
1.5 |
public void testGetWaitQueueLength() { |
495 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
496 |
|
|
final ReentrantLock.ConditionObject c = lock.newCondition(); |
497 |
|
|
Thread t1 = new Thread(new Runnable() { |
498 |
|
|
public void run() { |
499 |
|
|
try { |
500 |
|
|
lock.lock(); |
501 |
|
|
threadAssertFalse(c.hasWaiters()); |
502 |
|
|
threadAssertEquals(0, c.getWaitQueueLength()); |
503 |
|
|
c.await(); |
504 |
|
|
lock.unlock(); |
505 |
|
|
} |
506 |
|
|
catch(InterruptedException e) { |
507 |
dl |
1.6 |
threadUnexpectedException(); |
508 |
dl |
1.5 |
} |
509 |
|
|
} |
510 |
|
|
}); |
511 |
|
|
|
512 |
|
|
Thread t2 = new Thread(new Runnable() { |
513 |
|
|
public void run() { |
514 |
|
|
try { |
515 |
|
|
lock.lock(); |
516 |
|
|
threadAssertTrue(c.hasWaiters()); |
517 |
|
|
threadAssertEquals(1, c.getWaitQueueLength()); |
518 |
|
|
c.await(); |
519 |
|
|
lock.unlock(); |
520 |
|
|
} |
521 |
|
|
catch(InterruptedException e) { |
522 |
dl |
1.6 |
threadUnexpectedException(); |
523 |
dl |
1.5 |
} |
524 |
|
|
} |
525 |
|
|
}); |
526 |
|
|
|
527 |
|
|
try { |
528 |
|
|
t1.start(); |
529 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
530 |
|
|
t2.start(); |
531 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
532 |
|
|
lock.lock(); |
533 |
|
|
assertTrue(c.hasWaiters()); |
534 |
|
|
assertEquals(2, c.getWaitQueueLength()); |
535 |
|
|
c.signalAll(); |
536 |
|
|
lock.unlock(); |
537 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
538 |
|
|
lock.lock(); |
539 |
|
|
assertFalse(c.hasWaiters()); |
540 |
|
|
assertEquals(0, c.getWaitQueueLength()); |
541 |
|
|
lock.unlock(); |
542 |
|
|
t1.join(SHORT_DELAY_MS); |
543 |
|
|
t2.join(SHORT_DELAY_MS); |
544 |
|
|
assertFalse(t1.isAlive()); |
545 |
|
|
assertFalse(t2.isAlive()); |
546 |
|
|
} |
547 |
|
|
catch (Exception ex) { |
548 |
dl |
1.6 |
unexpectedException(); |
549 |
dl |
1.5 |
} |
550 |
|
|
} |
551 |
|
|
|
552 |
dl |
1.6 |
/** |
553 |
|
|
* getWaitingThreads returns only and all waiting threads |
554 |
|
|
*/ |
555 |
dl |
1.5 |
public void testGetWaitingThreads() { |
556 |
dl |
1.6 |
final PublicReentrantLock lock = new PublicReentrantLock(); |
557 |
|
|
final PublicReentrantLock.PublicCondition c = (PublicReentrantLock.PublicCondition)lock.newCondition(); |
558 |
dl |
1.5 |
Thread t1 = new Thread(new Runnable() { |
559 |
|
|
public void run() { |
560 |
|
|
try { |
561 |
|
|
lock.lock(); |
562 |
|
|
threadAssertTrue(c.getWaitingThreads().isEmpty()); |
563 |
|
|
c.await(); |
564 |
|
|
lock.unlock(); |
565 |
|
|
} |
566 |
|
|
catch(InterruptedException e) { |
567 |
dl |
1.6 |
threadUnexpectedException(); |
568 |
dl |
1.5 |
} |
569 |
|
|
} |
570 |
|
|
}); |
571 |
|
|
|
572 |
|
|
Thread t2 = new Thread(new Runnable() { |
573 |
|
|
public void run() { |
574 |
|
|
try { |
575 |
|
|
lock.lock(); |
576 |
|
|
threadAssertFalse(c.getWaitingThreads().isEmpty()); |
577 |
|
|
c.await(); |
578 |
|
|
lock.unlock(); |
579 |
|
|
} |
580 |
|
|
catch(InterruptedException e) { |
581 |
dl |
1.6 |
threadUnexpectedException(); |
582 |
dl |
1.5 |
} |
583 |
|
|
} |
584 |
|
|
}); |
585 |
|
|
|
586 |
|
|
try { |
587 |
|
|
lock.lock(); |
588 |
|
|
assertTrue(c.getWaitingThreads().isEmpty()); |
589 |
|
|
lock.unlock(); |
590 |
|
|
t1.start(); |
591 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
592 |
|
|
t2.start(); |
593 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
594 |
|
|
lock.lock(); |
595 |
|
|
assertTrue(c.hasWaiters()); |
596 |
|
|
assertTrue(c.getWaitingThreads().contains(t1)); |
597 |
|
|
assertTrue(c.getWaitingThreads().contains(t2)); |
598 |
|
|
c.signalAll(); |
599 |
|
|
lock.unlock(); |
600 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
601 |
|
|
lock.lock(); |
602 |
|
|
assertFalse(c.hasWaiters()); |
603 |
|
|
assertTrue(c.getWaitingThreads().isEmpty()); |
604 |
|
|
lock.unlock(); |
605 |
|
|
t1.join(SHORT_DELAY_MS); |
606 |
|
|
t2.join(SHORT_DELAY_MS); |
607 |
|
|
assertFalse(t1.isAlive()); |
608 |
|
|
assertFalse(t2.isAlive()); |
609 |
dl |
1.2 |
} |
610 |
|
|
catch (Exception ex) { |
611 |
dl |
1.6 |
unexpectedException(); |
612 |
dl |
1.2 |
} |
613 |
|
|
} |
614 |
|
|
|
615 |
dl |
1.6 |
/** |
616 |
|
|
* awaitUninterruptibly doesn't abort on interrupt |
617 |
|
|
*/ |
618 |
dl |
1.2 |
public void testAwaitUninterruptibly() { |
619 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
620 |
|
|
final Condition c = lock.newCondition(); |
621 |
|
|
Thread t = new Thread(new Runnable() { |
622 |
|
|
public void run() { |
623 |
|
|
lock.lock(); |
624 |
|
|
c.awaitUninterruptibly(); |
625 |
|
|
lock.unlock(); |
626 |
|
|
} |
627 |
|
|
}); |
628 |
|
|
|
629 |
|
|
try { |
630 |
|
|
t.start(); |
631 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
632 |
|
|
t.interrupt(); |
633 |
|
|
lock.lock(); |
634 |
|
|
c.signal(); |
635 |
|
|
lock.unlock(); |
636 |
dl |
1.6 |
assert(t.isInterrupted()); |
637 |
dl |
1.2 |
t.join(SHORT_DELAY_MS); |
638 |
|
|
assertFalse(t.isAlive()); |
639 |
|
|
} |
640 |
|
|
catch (Exception ex) { |
641 |
dl |
1.6 |
unexpectedException(); |
642 |
dl |
1.2 |
} |
643 |
|
|
} |
644 |
|
|
|
645 |
dl |
1.6 |
/** |
646 |
|
|
* await is interruptible |
647 |
|
|
*/ |
648 |
dl |
1.2 |
public void testAwait_Interrupt() { |
649 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
650 |
|
|
final Condition c = lock.newCondition(); |
651 |
|
|
Thread t = new Thread(new Runnable() { |
652 |
|
|
public void run() { |
653 |
|
|
try { |
654 |
|
|
lock.lock(); |
655 |
|
|
c.await(); |
656 |
|
|
lock.unlock(); |
657 |
dl |
1.6 |
threadShouldThrow(); |
658 |
dl |
1.2 |
} |
659 |
|
|
catch(InterruptedException success) { |
660 |
|
|
} |
661 |
|
|
} |
662 |
|
|
}); |
663 |
|
|
|
664 |
|
|
try { |
665 |
|
|
t.start(); |
666 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
667 |
|
|
t.interrupt(); |
668 |
|
|
t.join(SHORT_DELAY_MS); |
669 |
|
|
assertFalse(t.isAlive()); |
670 |
|
|
} |
671 |
|
|
catch (Exception ex) { |
672 |
dl |
1.6 |
unexpectedException(); |
673 |
dl |
1.2 |
} |
674 |
|
|
} |
675 |
|
|
|
676 |
dl |
1.6 |
/** |
677 |
|
|
* awaitNanos is interruptible |
678 |
|
|
*/ |
679 |
dl |
1.2 |
public void testAwaitNanos_Interrupt() { |
680 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
681 |
|
|
final Condition c = lock.newCondition(); |
682 |
|
|
Thread t = new Thread(new Runnable() { |
683 |
|
|
public void run() { |
684 |
|
|
try { |
685 |
|
|
lock.lock(); |
686 |
|
|
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
687 |
|
|
lock.unlock(); |
688 |
dl |
1.6 |
threadShouldThrow(); |
689 |
dl |
1.2 |
} |
690 |
|
|
catch(InterruptedException success) { |
691 |
|
|
} |
692 |
|
|
} |
693 |
|
|
}); |
694 |
|
|
|
695 |
|
|
try { |
696 |
|
|
t.start(); |
697 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
698 |
|
|
t.interrupt(); |
699 |
|
|
t.join(SHORT_DELAY_MS); |
700 |
|
|
assertFalse(t.isAlive()); |
701 |
|
|
} |
702 |
|
|
catch (Exception ex) { |
703 |
dl |
1.6 |
unexpectedException(); |
704 |
dl |
1.2 |
} |
705 |
|
|
} |
706 |
|
|
|
707 |
dl |
1.6 |
/** |
708 |
|
|
* awaitUntil is interruptible |
709 |
|
|
*/ |
710 |
dl |
1.2 |
public void testAwaitUntil_Interrupt() { |
711 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
712 |
|
|
final Condition c = lock.newCondition(); |
713 |
|
|
Thread t = new Thread(new Runnable() { |
714 |
|
|
public void run() { |
715 |
|
|
try { |
716 |
|
|
lock.lock(); |
717 |
|
|
java.util.Date d = new java.util.Date(); |
718 |
|
|
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
719 |
|
|
lock.unlock(); |
720 |
dl |
1.6 |
threadShouldThrow(); |
721 |
dl |
1.2 |
} |
722 |
|
|
catch(InterruptedException success) { |
723 |
|
|
} |
724 |
|
|
} |
725 |
|
|
}); |
726 |
|
|
|
727 |
|
|
try { |
728 |
|
|
t.start(); |
729 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
730 |
|
|
t.interrupt(); |
731 |
|
|
t.join(SHORT_DELAY_MS); |
732 |
|
|
assertFalse(t.isAlive()); |
733 |
|
|
} |
734 |
|
|
catch (Exception ex) { |
735 |
dl |
1.6 |
unexpectedException(); |
736 |
dl |
1.2 |
} |
737 |
|
|
} |
738 |
|
|
|
739 |
dl |
1.6 |
/** |
740 |
|
|
* signalAll wakes up all threads |
741 |
|
|
*/ |
742 |
dl |
1.2 |
public void testSignalAll() { |
743 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
744 |
|
|
final Condition c = lock.newCondition(); |
745 |
|
|
Thread t1 = new Thread(new Runnable() { |
746 |
|
|
public void run() { |
747 |
|
|
try { |
748 |
|
|
lock.lock(); |
749 |
|
|
c.await(); |
750 |
|
|
lock.unlock(); |
751 |
|
|
} |
752 |
|
|
catch(InterruptedException e) { |
753 |
dl |
1.6 |
threadUnexpectedException(); |
754 |
dl |
1.2 |
} |
755 |
|
|
} |
756 |
|
|
}); |
757 |
|
|
|
758 |
|
|
Thread t2 = new Thread(new Runnable() { |
759 |
|
|
public void run() { |
760 |
|
|
try { |
761 |
|
|
lock.lock(); |
762 |
|
|
c.await(); |
763 |
|
|
lock.unlock(); |
764 |
|
|
} |
765 |
|
|
catch(InterruptedException e) { |
766 |
dl |
1.6 |
threadUnexpectedException(); |
767 |
dl |
1.2 |
} |
768 |
|
|
} |
769 |
|
|
}); |
770 |
|
|
|
771 |
|
|
try { |
772 |
|
|
t1.start(); |
773 |
|
|
t2.start(); |
774 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
775 |
|
|
lock.lock(); |
776 |
|
|
c.signalAll(); |
777 |
|
|
lock.unlock(); |
778 |
|
|
t1.join(SHORT_DELAY_MS); |
779 |
|
|
t2.join(SHORT_DELAY_MS); |
780 |
|
|
assertFalse(t1.isAlive()); |
781 |
|
|
assertFalse(t2.isAlive()); |
782 |
|
|
} |
783 |
|
|
catch (Exception ex) { |
784 |
dl |
1.6 |
unexpectedException(); |
785 |
dl |
1.3 |
} |
786 |
|
|
} |
787 |
|
|
|
788 |
dl |
1.6 |
/** |
789 |
|
|
* A serialized lock deserializes as unlocked |
790 |
|
|
*/ |
791 |
dl |
1.3 |
public void testSerialization() { |
792 |
|
|
ReentrantLock l = new ReentrantLock(); |
793 |
|
|
l.lock(); |
794 |
|
|
l.unlock(); |
795 |
|
|
|
796 |
|
|
try { |
797 |
|
|
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
798 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
799 |
|
|
out.writeObject(l); |
800 |
|
|
out.close(); |
801 |
|
|
|
802 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
803 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
804 |
|
|
ReentrantLock r = (ReentrantLock) in.readObject(); |
805 |
|
|
r.lock(); |
806 |
|
|
r.unlock(); |
807 |
|
|
} catch(Exception e){ |
808 |
|
|
e.printStackTrace(); |
809 |
dl |
1.6 |
unexpectedException(); |
810 |
dl |
1.2 |
} |
811 |
|
|
} |
812 |
dl |
1.1 |
|
813 |
|
|
} |