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dl |
1.1 |
/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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*/ |
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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.*; |
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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()); |
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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 |
/** |
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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; |
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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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/** |
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* A runnable calling lockInterruptibly that expects to be |
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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 |
1.10 |
return new PublicCondition(); |
61 |
dl |
1.5 |
} |
62 |
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63 |
dl |
1.10 |
class PublicCondition extends ReentrantLock.ConditionObject { |
64 |
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PublicCondition() { } |
65 |
dl |
1.5 |
public Collection<Thread> getWaitingThreads() { |
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return super.getWaitingThreads(); |
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} |
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} |
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} |
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72 |
dl |
1.8 |
/** |
73 |
dl |
1.9 |
* Constructor sets given fairness |
74 |
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*/ |
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public void testConstructor() { |
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ReentrantLock rl = new ReentrantLock(); |
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assertFalse(rl.isFair()); |
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ReentrantLock r2 = new ReentrantLock(true); |
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assertTrue(r2.isFair()); |
80 |
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} |
81 |
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82 |
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/** |
83 |
dl |
1.6 |
* locking an unlocked lock succeeds |
84 |
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*/ |
85 |
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public void testLock() { |
86 |
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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(); |
90 |
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} |
91 |
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92 |
dl |
1.8 |
/** |
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dl |
1.6 |
* locking an unlocked fair lock succeeds |
94 |
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*/ |
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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()); |
99 |
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rl.unlock(); |
100 |
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} |
101 |
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|
102 |
dl |
1.8 |
/** |
103 |
dl |
1.5 |
* Unlocking an unlocked lock throws IllegalMonitorStateException |
104 |
dl |
1.1 |
*/ |
105 |
dl |
1.6 |
public void testUnlock_IllegalMonitorStateException() { |
106 |
dl |
1.1 |
ReentrantLock rl = new ReentrantLock(); |
107 |
dl |
1.6 |
try { |
108 |
dl |
1.1 |
rl.unlock(); |
109 |
dl |
1.6 |
shouldThrow(); |
110 |
dl |
1.1 |
|
111 |
dl |
1.3 |
} catch(IllegalMonitorStateException success){} |
112 |
dl |
1.5 |
} |
113 |
dl |
1.1 |
|
114 |
dl |
1.8 |
/** |
115 |
dl |
1.6 |
* trylock on an unlocked lock succeeds |
116 |
dl |
1.1 |
*/ |
117 |
dl |
1.6 |
public void testTryLock() { |
118 |
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ReentrantLock rl = new ReentrantLock(); |
119 |
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assertTrue(rl.tryLock()); |
120 |
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assertTrue(rl.isLocked()); |
121 |
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rl.unlock(); |
122 |
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} |
123 |
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124 |
dl |
1.1 |
|
125 |
dl |
1.8 |
/** |
126 |
dl |
1.7 |
* getQueueLength reports number of waiting threads |
127 |
dl |
1.1 |
*/ |
128 |
dl |
1.7 |
public void testGetQueueLength() { |
129 |
dl |
1.5 |
final ReentrantLock lock = new ReentrantLock(); |
130 |
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Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
131 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
132 |
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try { |
133 |
dl |
1.7 |
assertEquals(0, lock.getQueueLength()); |
134 |
dl |
1.5 |
lock.lock(); |
135 |
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t1.start(); |
136 |
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Thread.sleep(SHORT_DELAY_MS); |
137 |
dl |
1.7 |
assertEquals(1, lock.getQueueLength()); |
138 |
dl |
1.5 |
t2.start(); |
139 |
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Thread.sleep(SHORT_DELAY_MS); |
140 |
dl |
1.7 |
assertEquals(2, lock.getQueueLength()); |
141 |
dl |
1.5 |
t1.interrupt(); |
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Thread.sleep(SHORT_DELAY_MS); |
143 |
dl |
1.7 |
assertEquals(1, lock.getQueueLength()); |
144 |
dl |
1.5 |
lock.unlock(); |
145 |
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Thread.sleep(SHORT_DELAY_MS); |
146 |
dl |
1.7 |
assertEquals(0, lock.getQueueLength()); |
147 |
dl |
1.5 |
t1.join(); |
148 |
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t2.join(); |
149 |
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} catch(Exception e){ |
150 |
dl |
1.6 |
unexpectedException(); |
151 |
dl |
1.5 |
} |
152 |
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} |
153 |
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154 |
dl |
1.8 |
/** |
155 |
dl |
1.5 |
* getQueuedThreads includes waiting threads |
156 |
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*/ |
157 |
dl |
1.6 |
public void testGetQueuedThreads() { |
158 |
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final PublicReentrantLock lock = new PublicReentrantLock(); |
159 |
dl |
1.5 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
160 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
161 |
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try { |
162 |
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assertTrue(lock.getQueuedThreads().isEmpty()); |
163 |
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lock.lock(); |
164 |
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assertTrue(lock.getQueuedThreads().isEmpty()); |
165 |
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t1.start(); |
166 |
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Thread.sleep(SHORT_DELAY_MS); |
167 |
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assertTrue(lock.getQueuedThreads().contains(t1)); |
168 |
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t2.start(); |
169 |
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Thread.sleep(SHORT_DELAY_MS); |
170 |
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assertTrue(lock.getQueuedThreads().contains(t1)); |
171 |
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assertTrue(lock.getQueuedThreads().contains(t2)); |
172 |
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t1.interrupt(); |
173 |
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Thread.sleep(SHORT_DELAY_MS); |
174 |
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assertFalse(lock.getQueuedThreads().contains(t1)); |
175 |
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assertTrue(lock.getQueuedThreads().contains(t2)); |
176 |
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lock.unlock(); |
177 |
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Thread.sleep(SHORT_DELAY_MS); |
178 |
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assertTrue(lock.getQueuedThreads().isEmpty()); |
179 |
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t1.join(); |
180 |
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t2.join(); |
181 |
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} catch(Exception e){ |
182 |
dl |
1.6 |
unexpectedException(); |
183 |
dl |
1.5 |
} |
184 |
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} |
185 |
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186 |
dl |
1.1 |
|
187 |
dl |
1.8 |
/** |
188 |
dl |
1.5 |
* timed trylock is interruptible. |
189 |
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*/ |
190 |
dl |
1.6 |
public void testInterruptedException2() { |
191 |
dl |
1.1 |
final ReentrantLock lock = new ReentrantLock(); |
192 |
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lock.lock(); |
193 |
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Thread t = new Thread(new Runnable() { |
194 |
dl |
1.6 |
public void run() { |
195 |
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try { |
196 |
dl |
1.4 |
lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS); |
197 |
dl |
1.6 |
threadShouldThrow(); |
198 |
dl |
1.3 |
} catch(InterruptedException success){} |
199 |
dl |
1.1 |
} |
200 |
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}); |
201 |
dl |
1.4 |
try { |
202 |
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t.start(); |
203 |
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t.interrupt(); |
204 |
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} catch(Exception e){ |
205 |
dl |
1.6 |
unexpectedException(); |
206 |
dl |
1.4 |
} |
207 |
dl |
1.1 |
} |
208 |
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209 |
dl |
1.3 |
|
210 |
dl |
1.5 |
/** |
211 |
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* Trylock on a locked lock fails |
212 |
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*/ |
213 |
dl |
1.3 |
public void testTryLockWhenLocked() { |
214 |
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final ReentrantLock lock = new ReentrantLock(); |
215 |
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lock.lock(); |
216 |
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Thread t = new Thread(new Runnable() { |
217 |
dl |
1.6 |
public void run() { |
218 |
dl |
1.4 |
threadAssertFalse(lock.tryLock()); |
219 |
dl |
1.3 |
} |
220 |
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}); |
221 |
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try { |
222 |
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t.start(); |
223 |
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t.join(); |
224 |
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lock.unlock(); |
225 |
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} catch(Exception e){ |
226 |
dl |
1.6 |
unexpectedException(); |
227 |
dl |
1.3 |
} |
228 |
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} |
229 |
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|
230 |
dl |
1.5 |
/** |
231 |
dl |
1.6 |
* Timed trylock on a locked lock times out |
232 |
dl |
1.5 |
*/ |
233 |
dl |
1.6 |
public void testTryLock_Timeout() { |
234 |
dl |
1.3 |
final ReentrantLock lock = new ReentrantLock(); |
235 |
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lock.lock(); |
236 |
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Thread t = new Thread(new Runnable() { |
237 |
dl |
1.6 |
public void run() { |
238 |
dl |
1.3 |
try { |
239 |
dl |
1.4 |
threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
240 |
dl |
1.3 |
} catch (Exception ex) { |
241 |
dl |
1.6 |
threadUnexpectedException(); |
242 |
dl |
1.3 |
} |
243 |
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} |
244 |
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}); |
245 |
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try { |
246 |
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t.start(); |
247 |
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t.join(); |
248 |
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lock.unlock(); |
249 |
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} catch(Exception e){ |
250 |
dl |
1.6 |
unexpectedException(); |
251 |
dl |
1.3 |
} |
252 |
|
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} |
253 |
dl |
1.1 |
|
254 |
dl |
1.5 |
/** |
255 |
|
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* getHoldCount returns number of recursive holds |
256 |
|
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*/ |
257 |
dl |
1.1 |
public void testGetHoldCount() { |
258 |
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ReentrantLock lock = new ReentrantLock(); |
259 |
dl |
1.6 |
for(int i = 1; i <= SIZE; i++) { |
260 |
dl |
1.1 |
lock.lock(); |
261 |
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assertEquals(i,lock.getHoldCount()); |
262 |
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} |
263 |
dl |
1.6 |
for(int i = SIZE; i > 0; i--) { |
264 |
dl |
1.1 |
lock.unlock(); |
265 |
|
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assertEquals(i-1,lock.getHoldCount()); |
266 |
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} |
267 |
|
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} |
268 |
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|
269 |
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|
270 |
dl |
1.5 |
/** |
271 |
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* isLocked is true when locked and false when not |
272 |
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*/ |
273 |
dl |
1.1 |
public void testIsLocked() { |
274 |
|
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final ReentrantLock lock = new ReentrantLock(); |
275 |
|
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lock.lock(); |
276 |
|
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assertTrue(lock.isLocked()); |
277 |
|
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lock.unlock(); |
278 |
|
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assertFalse(lock.isLocked()); |
279 |
|
|
Thread t = new Thread(new Runnable() { |
280 |
|
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public void run() { |
281 |
|
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lock.lock(); |
282 |
|
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try { |
283 |
dl |
1.4 |
Thread.sleep(SMALL_DELAY_MS); |
284 |
dl |
1.1 |
} |
285 |
dl |
1.4 |
catch(Exception e) { |
286 |
dl |
1.6 |
threadUnexpectedException(); |
287 |
dl |
1.4 |
} |
288 |
dl |
1.1 |
lock.unlock(); |
289 |
|
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} |
290 |
|
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}); |
291 |
dl |
1.6 |
try { |
292 |
dl |
1.1 |
t.start(); |
293 |
|
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Thread.sleep(SHORT_DELAY_MS); |
294 |
|
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assertTrue(lock.isLocked()); |
295 |
|
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t.join(); |
296 |
|
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assertFalse(lock.isLocked()); |
297 |
|
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} catch(Exception e){ |
298 |
dl |
1.6 |
unexpectedException(); |
299 |
dl |
1.1 |
} |
300 |
|
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} |
301 |
|
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|
302 |
|
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|
303 |
dl |
1.8 |
/** |
304 |
dl |
1.6 |
* lockInterruptibly is interruptible. |
305 |
|
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*/ |
306 |
|
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public void testLockInterruptibly1() { |
307 |
|
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final ReentrantLock lock = new ReentrantLock(); |
308 |
|
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lock.lock(); |
309 |
|
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Thread t = new Thread(new InterruptedLockRunnable(lock)); |
310 |
|
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try { |
311 |
|
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t.start(); |
312 |
|
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t.interrupt(); |
313 |
|
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lock.unlock(); |
314 |
|
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t.join(); |
315 |
|
|
} catch(Exception e){ |
316 |
|
|
unexpectedException(); |
317 |
|
|
} |
318 |
|
|
} |
319 |
|
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|
320 |
dl |
1.5 |
/** |
321 |
|
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* lockInterruptibly succeeds when unlocked, else is interruptible |
322 |
|
|
*/ |
323 |
dl |
1.6 |
public void testLockInterruptibly2() { |
324 |
dl |
1.1 |
final ReentrantLock lock = new ReentrantLock(); |
325 |
dl |
1.3 |
try { |
326 |
|
|
lock.lockInterruptibly(); |
327 |
|
|
} catch(Exception e) { |
328 |
dl |
1.6 |
unexpectedException(); |
329 |
dl |
1.3 |
} |
330 |
dl |
1.5 |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
331 |
dl |
1.3 |
try { |
332 |
|
|
t.start(); |
333 |
|
|
t.interrupt(); |
334 |
|
|
assertTrue(lock.isLocked()); |
335 |
|
|
assertTrue(lock.isHeldByCurrentThread()); |
336 |
|
|
t.join(); |
337 |
|
|
} catch(Exception e){ |
338 |
dl |
1.6 |
unexpectedException(); |
339 |
dl |
1.3 |
} |
340 |
dl |
1.1 |
} |
341 |
dl |
1.2 |
|
342 |
dl |
1.6 |
/** |
343 |
|
|
* Calling await without holding lock throws IllegalMonitorStateException |
344 |
|
|
*/ |
345 |
dl |
1.2 |
public void testAwait_IllegalMonitor() { |
346 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
347 |
|
|
final Condition c = lock.newCondition(); |
348 |
|
|
try { |
349 |
|
|
c.await(); |
350 |
dl |
1.6 |
shouldThrow(); |
351 |
dl |
1.2 |
} |
352 |
|
|
catch (IllegalMonitorStateException success) { |
353 |
|
|
} |
354 |
|
|
catch (Exception ex) { |
355 |
dl |
1.6 |
unexpectedException(); |
356 |
dl |
1.2 |
} |
357 |
|
|
} |
358 |
|
|
|
359 |
dl |
1.6 |
/** |
360 |
|
|
* Calling signal without holding lock throws IllegalMonitorStateException |
361 |
|
|
*/ |
362 |
dl |
1.2 |
public void testSignal_IllegalMonitor() { |
363 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
364 |
|
|
final Condition c = lock.newCondition(); |
365 |
|
|
try { |
366 |
|
|
c.signal(); |
367 |
dl |
1.6 |
shouldThrow(); |
368 |
dl |
1.2 |
} |
369 |
|
|
catch (IllegalMonitorStateException success) { |
370 |
|
|
} |
371 |
|
|
catch (Exception ex) { |
372 |
dl |
1.6 |
unexpectedException(); |
373 |
dl |
1.2 |
} |
374 |
|
|
} |
375 |
|
|
|
376 |
dl |
1.6 |
/** |
377 |
|
|
* awaitNanos without a signal times out |
378 |
|
|
*/ |
379 |
dl |
1.2 |
public void testAwaitNanos_Timeout() { |
380 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
381 |
|
|
final Condition c = lock.newCondition(); |
382 |
|
|
try { |
383 |
|
|
lock.lock(); |
384 |
|
|
long t = c.awaitNanos(100); |
385 |
|
|
assertTrue(t <= 0); |
386 |
|
|
lock.unlock(); |
387 |
|
|
} |
388 |
|
|
catch (Exception ex) { |
389 |
dl |
1.6 |
unexpectedException(); |
390 |
dl |
1.2 |
} |
391 |
|
|
} |
392 |
|
|
|
393 |
dl |
1.6 |
/** |
394 |
|
|
* timed await without a signal times out |
395 |
|
|
*/ |
396 |
dl |
1.2 |
public void testAwait_Timeout() { |
397 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
398 |
|
|
final Condition c = lock.newCondition(); |
399 |
|
|
try { |
400 |
|
|
lock.lock(); |
401 |
dl |
1.4 |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
402 |
dl |
1.2 |
lock.unlock(); |
403 |
|
|
} |
404 |
|
|
catch (Exception ex) { |
405 |
dl |
1.6 |
unexpectedException(); |
406 |
dl |
1.2 |
} |
407 |
|
|
} |
408 |
|
|
|
409 |
dl |
1.6 |
/** |
410 |
|
|
* awaitUntil without a signal times out |
411 |
|
|
*/ |
412 |
dl |
1.2 |
public void testAwaitUntil_Timeout() { |
413 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
414 |
|
|
final Condition c = lock.newCondition(); |
415 |
|
|
try { |
416 |
|
|
lock.lock(); |
417 |
|
|
java.util.Date d = new java.util.Date(); |
418 |
|
|
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
419 |
|
|
lock.unlock(); |
420 |
|
|
} |
421 |
|
|
catch (Exception ex) { |
422 |
dl |
1.6 |
unexpectedException(); |
423 |
dl |
1.2 |
} |
424 |
|
|
} |
425 |
|
|
|
426 |
dl |
1.6 |
/** |
427 |
|
|
* await returns when signalled |
428 |
|
|
*/ |
429 |
dl |
1.2 |
public void testAwait() { |
430 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
431 |
dl |
1.5 |
final ReentrantLock.ConditionObject c = lock.newCondition(); |
432 |
|
|
Thread t = new Thread(new Runnable() { |
433 |
|
|
public void run() { |
434 |
|
|
try { |
435 |
|
|
lock.lock(); |
436 |
|
|
c.await(); |
437 |
|
|
lock.unlock(); |
438 |
|
|
} |
439 |
|
|
catch(InterruptedException e) { |
440 |
dl |
1.6 |
threadUnexpectedException(); |
441 |
dl |
1.5 |
} |
442 |
|
|
} |
443 |
|
|
}); |
444 |
|
|
|
445 |
|
|
try { |
446 |
|
|
t.start(); |
447 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
448 |
|
|
lock.lock(); |
449 |
|
|
c.signal(); |
450 |
|
|
lock.unlock(); |
451 |
|
|
t.join(SHORT_DELAY_MS); |
452 |
|
|
assertFalse(t.isAlive()); |
453 |
|
|
} |
454 |
|
|
catch (Exception ex) { |
455 |
dl |
1.6 |
unexpectedException(); |
456 |
dl |
1.5 |
} |
457 |
|
|
} |
458 |
|
|
|
459 |
dl |
1.6 |
/** |
460 |
|
|
* hasWaiters returns true when a thread is waiting, else false |
461 |
|
|
*/ |
462 |
dl |
1.5 |
public void testHasWaiters() { |
463 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
464 |
|
|
final ReentrantLock.ConditionObject c = lock.newCondition(); |
465 |
dl |
1.2 |
Thread t = new Thread(new Runnable() { |
466 |
|
|
public void run() { |
467 |
|
|
try { |
468 |
|
|
lock.lock(); |
469 |
dl |
1.5 |
threadAssertFalse(c.hasWaiters()); |
470 |
|
|
threadAssertEquals(0, c.getWaitQueueLength()); |
471 |
dl |
1.2 |
c.await(); |
472 |
|
|
lock.unlock(); |
473 |
|
|
} |
474 |
|
|
catch(InterruptedException e) { |
475 |
dl |
1.6 |
threadUnexpectedException(); |
476 |
dl |
1.2 |
} |
477 |
|
|
} |
478 |
|
|
}); |
479 |
|
|
|
480 |
|
|
try { |
481 |
|
|
t.start(); |
482 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
483 |
|
|
lock.lock(); |
484 |
dl |
1.5 |
assertTrue(c.hasWaiters()); |
485 |
|
|
assertEquals(1, c.getWaitQueueLength()); |
486 |
dl |
1.2 |
c.signal(); |
487 |
|
|
lock.unlock(); |
488 |
dl |
1.5 |
Thread.sleep(SHORT_DELAY_MS); |
489 |
|
|
lock.lock(); |
490 |
|
|
assertFalse(c.hasWaiters()); |
491 |
|
|
assertEquals(0, c.getWaitQueueLength()); |
492 |
|
|
lock.unlock(); |
493 |
dl |
1.2 |
t.join(SHORT_DELAY_MS); |
494 |
|
|
assertFalse(t.isAlive()); |
495 |
dl |
1.5 |
} |
496 |
|
|
catch (Exception ex) { |
497 |
dl |
1.6 |
unexpectedException(); |
498 |
dl |
1.5 |
} |
499 |
|
|
} |
500 |
|
|
|
501 |
dl |
1.6 |
/** |
502 |
|
|
* getWaitQueueLength returns number of waiting threads |
503 |
|
|
*/ |
504 |
dl |
1.5 |
public void testGetWaitQueueLength() { |
505 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
506 |
|
|
final ReentrantLock.ConditionObject c = lock.newCondition(); |
507 |
|
|
Thread t1 = new Thread(new Runnable() { |
508 |
|
|
public void run() { |
509 |
|
|
try { |
510 |
|
|
lock.lock(); |
511 |
|
|
threadAssertFalse(c.hasWaiters()); |
512 |
|
|
threadAssertEquals(0, c.getWaitQueueLength()); |
513 |
|
|
c.await(); |
514 |
|
|
lock.unlock(); |
515 |
|
|
} |
516 |
|
|
catch(InterruptedException e) { |
517 |
dl |
1.6 |
threadUnexpectedException(); |
518 |
dl |
1.5 |
} |
519 |
|
|
} |
520 |
|
|
}); |
521 |
|
|
|
522 |
|
|
Thread t2 = new Thread(new Runnable() { |
523 |
|
|
public void run() { |
524 |
|
|
try { |
525 |
|
|
lock.lock(); |
526 |
|
|
threadAssertTrue(c.hasWaiters()); |
527 |
|
|
threadAssertEquals(1, c.getWaitQueueLength()); |
528 |
|
|
c.await(); |
529 |
|
|
lock.unlock(); |
530 |
|
|
} |
531 |
|
|
catch(InterruptedException e) { |
532 |
dl |
1.6 |
threadUnexpectedException(); |
533 |
dl |
1.5 |
} |
534 |
|
|
} |
535 |
|
|
}); |
536 |
|
|
|
537 |
|
|
try { |
538 |
|
|
t1.start(); |
539 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
540 |
|
|
t2.start(); |
541 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
542 |
|
|
lock.lock(); |
543 |
|
|
assertTrue(c.hasWaiters()); |
544 |
|
|
assertEquals(2, c.getWaitQueueLength()); |
545 |
|
|
c.signalAll(); |
546 |
|
|
lock.unlock(); |
547 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
548 |
|
|
lock.lock(); |
549 |
|
|
assertFalse(c.hasWaiters()); |
550 |
|
|
assertEquals(0, c.getWaitQueueLength()); |
551 |
|
|
lock.unlock(); |
552 |
|
|
t1.join(SHORT_DELAY_MS); |
553 |
|
|
t2.join(SHORT_DELAY_MS); |
554 |
|
|
assertFalse(t1.isAlive()); |
555 |
|
|
assertFalse(t2.isAlive()); |
556 |
|
|
} |
557 |
|
|
catch (Exception ex) { |
558 |
dl |
1.6 |
unexpectedException(); |
559 |
dl |
1.5 |
} |
560 |
|
|
} |
561 |
|
|
|
562 |
dl |
1.6 |
/** |
563 |
|
|
* getWaitingThreads returns only and all waiting threads |
564 |
|
|
*/ |
565 |
dl |
1.5 |
public void testGetWaitingThreads() { |
566 |
dl |
1.6 |
final PublicReentrantLock lock = new PublicReentrantLock(); |
567 |
|
|
final PublicReentrantLock.PublicCondition c = (PublicReentrantLock.PublicCondition)lock.newCondition(); |
568 |
dl |
1.5 |
Thread t1 = new Thread(new Runnable() { |
569 |
|
|
public void run() { |
570 |
|
|
try { |
571 |
|
|
lock.lock(); |
572 |
|
|
threadAssertTrue(c.getWaitingThreads().isEmpty()); |
573 |
|
|
c.await(); |
574 |
|
|
lock.unlock(); |
575 |
|
|
} |
576 |
|
|
catch(InterruptedException e) { |
577 |
dl |
1.6 |
threadUnexpectedException(); |
578 |
dl |
1.5 |
} |
579 |
|
|
} |
580 |
|
|
}); |
581 |
|
|
|
582 |
|
|
Thread t2 = new Thread(new Runnable() { |
583 |
|
|
public void run() { |
584 |
|
|
try { |
585 |
|
|
lock.lock(); |
586 |
|
|
threadAssertFalse(c.getWaitingThreads().isEmpty()); |
587 |
|
|
c.await(); |
588 |
|
|
lock.unlock(); |
589 |
|
|
} |
590 |
|
|
catch(InterruptedException e) { |
591 |
dl |
1.6 |
threadUnexpectedException(); |
592 |
dl |
1.5 |
} |
593 |
|
|
} |
594 |
|
|
}); |
595 |
|
|
|
596 |
|
|
try { |
597 |
|
|
lock.lock(); |
598 |
|
|
assertTrue(c.getWaitingThreads().isEmpty()); |
599 |
|
|
lock.unlock(); |
600 |
|
|
t1.start(); |
601 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
602 |
|
|
t2.start(); |
603 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
604 |
|
|
lock.lock(); |
605 |
|
|
assertTrue(c.hasWaiters()); |
606 |
|
|
assertTrue(c.getWaitingThreads().contains(t1)); |
607 |
|
|
assertTrue(c.getWaitingThreads().contains(t2)); |
608 |
|
|
c.signalAll(); |
609 |
|
|
lock.unlock(); |
610 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
611 |
|
|
lock.lock(); |
612 |
|
|
assertFalse(c.hasWaiters()); |
613 |
|
|
assertTrue(c.getWaitingThreads().isEmpty()); |
614 |
|
|
lock.unlock(); |
615 |
|
|
t1.join(SHORT_DELAY_MS); |
616 |
|
|
t2.join(SHORT_DELAY_MS); |
617 |
|
|
assertFalse(t1.isAlive()); |
618 |
|
|
assertFalse(t2.isAlive()); |
619 |
dl |
1.2 |
} |
620 |
|
|
catch (Exception ex) { |
621 |
dl |
1.6 |
unexpectedException(); |
622 |
dl |
1.2 |
} |
623 |
|
|
} |
624 |
|
|
|
625 |
dl |
1.6 |
/** |
626 |
|
|
* awaitUninterruptibly doesn't abort on interrupt |
627 |
|
|
*/ |
628 |
dl |
1.2 |
public void testAwaitUninterruptibly() { |
629 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
630 |
|
|
final Condition c = lock.newCondition(); |
631 |
|
|
Thread t = new Thread(new Runnable() { |
632 |
|
|
public void run() { |
633 |
|
|
lock.lock(); |
634 |
|
|
c.awaitUninterruptibly(); |
635 |
|
|
lock.unlock(); |
636 |
|
|
} |
637 |
|
|
}); |
638 |
|
|
|
639 |
|
|
try { |
640 |
|
|
t.start(); |
641 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
642 |
|
|
t.interrupt(); |
643 |
|
|
lock.lock(); |
644 |
|
|
c.signal(); |
645 |
|
|
lock.unlock(); |
646 |
dl |
1.6 |
assert(t.isInterrupted()); |
647 |
dl |
1.2 |
t.join(SHORT_DELAY_MS); |
648 |
|
|
assertFalse(t.isAlive()); |
649 |
|
|
} |
650 |
|
|
catch (Exception ex) { |
651 |
dl |
1.6 |
unexpectedException(); |
652 |
dl |
1.2 |
} |
653 |
|
|
} |
654 |
|
|
|
655 |
dl |
1.6 |
/** |
656 |
|
|
* await is interruptible |
657 |
|
|
*/ |
658 |
dl |
1.2 |
public void testAwait_Interrupt() { |
659 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
660 |
|
|
final Condition c = lock.newCondition(); |
661 |
|
|
Thread t = new Thread(new Runnable() { |
662 |
|
|
public void run() { |
663 |
|
|
try { |
664 |
|
|
lock.lock(); |
665 |
|
|
c.await(); |
666 |
|
|
lock.unlock(); |
667 |
dl |
1.6 |
threadShouldThrow(); |
668 |
dl |
1.2 |
} |
669 |
|
|
catch(InterruptedException success) { |
670 |
|
|
} |
671 |
|
|
} |
672 |
|
|
}); |
673 |
|
|
|
674 |
|
|
try { |
675 |
|
|
t.start(); |
676 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
677 |
|
|
t.interrupt(); |
678 |
|
|
t.join(SHORT_DELAY_MS); |
679 |
|
|
assertFalse(t.isAlive()); |
680 |
|
|
} |
681 |
|
|
catch (Exception ex) { |
682 |
dl |
1.6 |
unexpectedException(); |
683 |
dl |
1.2 |
} |
684 |
|
|
} |
685 |
|
|
|
686 |
dl |
1.6 |
/** |
687 |
|
|
* awaitNanos is interruptible |
688 |
|
|
*/ |
689 |
dl |
1.2 |
public void testAwaitNanos_Interrupt() { |
690 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
691 |
|
|
final Condition c = lock.newCondition(); |
692 |
|
|
Thread t = new Thread(new Runnable() { |
693 |
|
|
public void run() { |
694 |
|
|
try { |
695 |
|
|
lock.lock(); |
696 |
|
|
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
697 |
|
|
lock.unlock(); |
698 |
dl |
1.6 |
threadShouldThrow(); |
699 |
dl |
1.2 |
} |
700 |
|
|
catch(InterruptedException success) { |
701 |
|
|
} |
702 |
|
|
} |
703 |
|
|
}); |
704 |
|
|
|
705 |
|
|
try { |
706 |
|
|
t.start(); |
707 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
708 |
|
|
t.interrupt(); |
709 |
|
|
t.join(SHORT_DELAY_MS); |
710 |
|
|
assertFalse(t.isAlive()); |
711 |
|
|
} |
712 |
|
|
catch (Exception ex) { |
713 |
dl |
1.6 |
unexpectedException(); |
714 |
dl |
1.2 |
} |
715 |
|
|
} |
716 |
|
|
|
717 |
dl |
1.6 |
/** |
718 |
|
|
* awaitUntil is interruptible |
719 |
|
|
*/ |
720 |
dl |
1.2 |
public void testAwaitUntil_Interrupt() { |
721 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
722 |
|
|
final Condition c = lock.newCondition(); |
723 |
|
|
Thread t = new Thread(new Runnable() { |
724 |
|
|
public void run() { |
725 |
|
|
try { |
726 |
|
|
lock.lock(); |
727 |
|
|
java.util.Date d = new java.util.Date(); |
728 |
|
|
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
729 |
|
|
lock.unlock(); |
730 |
dl |
1.6 |
threadShouldThrow(); |
731 |
dl |
1.2 |
} |
732 |
|
|
catch(InterruptedException success) { |
733 |
|
|
} |
734 |
|
|
} |
735 |
|
|
}); |
736 |
|
|
|
737 |
|
|
try { |
738 |
|
|
t.start(); |
739 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
740 |
|
|
t.interrupt(); |
741 |
|
|
t.join(SHORT_DELAY_MS); |
742 |
|
|
assertFalse(t.isAlive()); |
743 |
|
|
} |
744 |
|
|
catch (Exception ex) { |
745 |
dl |
1.6 |
unexpectedException(); |
746 |
dl |
1.2 |
} |
747 |
|
|
} |
748 |
|
|
|
749 |
dl |
1.6 |
/** |
750 |
|
|
* signalAll wakes up all threads |
751 |
|
|
*/ |
752 |
dl |
1.2 |
public void testSignalAll() { |
753 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
754 |
|
|
final Condition c = lock.newCondition(); |
755 |
|
|
Thread t1 = new Thread(new Runnable() { |
756 |
|
|
public void run() { |
757 |
|
|
try { |
758 |
|
|
lock.lock(); |
759 |
|
|
c.await(); |
760 |
|
|
lock.unlock(); |
761 |
|
|
} |
762 |
|
|
catch(InterruptedException e) { |
763 |
dl |
1.6 |
threadUnexpectedException(); |
764 |
dl |
1.2 |
} |
765 |
|
|
} |
766 |
|
|
}); |
767 |
|
|
|
768 |
|
|
Thread t2 = new Thread(new Runnable() { |
769 |
|
|
public void run() { |
770 |
|
|
try { |
771 |
|
|
lock.lock(); |
772 |
|
|
c.await(); |
773 |
|
|
lock.unlock(); |
774 |
|
|
} |
775 |
|
|
catch(InterruptedException e) { |
776 |
dl |
1.6 |
threadUnexpectedException(); |
777 |
dl |
1.2 |
} |
778 |
|
|
} |
779 |
|
|
}); |
780 |
|
|
|
781 |
|
|
try { |
782 |
|
|
t1.start(); |
783 |
|
|
t2.start(); |
784 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
785 |
|
|
lock.lock(); |
786 |
|
|
c.signalAll(); |
787 |
|
|
lock.unlock(); |
788 |
|
|
t1.join(SHORT_DELAY_MS); |
789 |
|
|
t2.join(SHORT_DELAY_MS); |
790 |
|
|
assertFalse(t1.isAlive()); |
791 |
|
|
assertFalse(t2.isAlive()); |
792 |
|
|
} |
793 |
|
|
catch (Exception ex) { |
794 |
dl |
1.6 |
unexpectedException(); |
795 |
dl |
1.3 |
} |
796 |
|
|
} |
797 |
|
|
|
798 |
dl |
1.6 |
/** |
799 |
|
|
* A serialized lock deserializes as unlocked |
800 |
|
|
*/ |
801 |
dl |
1.3 |
public void testSerialization() { |
802 |
|
|
ReentrantLock l = new ReentrantLock(); |
803 |
|
|
l.lock(); |
804 |
|
|
l.unlock(); |
805 |
|
|
|
806 |
|
|
try { |
807 |
|
|
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
808 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
809 |
|
|
out.writeObject(l); |
810 |
|
|
out.close(); |
811 |
|
|
|
812 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
813 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
814 |
|
|
ReentrantLock r = (ReentrantLock) in.readObject(); |
815 |
|
|
r.lock(); |
816 |
|
|
r.unlock(); |
817 |
|
|
} catch(Exception e){ |
818 |
|
|
e.printStackTrace(); |
819 |
dl |
1.6 |
unexpectedException(); |
820 |
dl |
1.2 |
} |
821 |
|
|
} |
822 |
dl |
1.1 |
|
823 |
|
|
} |