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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.*; |
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import java.util.concurrent.locks.*; |
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import java.util.concurrent.*; |
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dl |
1.2 |
import java.io.*; |
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dl |
1.1 |
|
13 |
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1.3 |
public class ReentrantReadWriteLockTest extends JSR166TestCase { |
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dl |
1.1 |
public static void main(String[] args) { |
15 |
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junit.textui.TestRunner.run (suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(ReentrantReadWriteLockTest.class); |
19 |
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} |
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22 |
dl |
1.5 |
/** |
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1.4 |
* write-locking and read-locking an unlocked lock succeed |
24 |
dl |
1.1 |
*/ |
25 |
dl |
1.4 |
public void testLock() { |
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dl |
1.1 |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
27 |
dl |
1.4 |
rl.writeLock().lock(); |
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rl.writeLock().unlock(); |
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rl.readLock().lock(); |
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rl.readLock().unlock(); |
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} |
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dl |
1.1 |
|
34 |
dl |
1.5 |
/** |
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1.4 |
* locking an unlocked fair lock succeeds |
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*/ |
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public void testFairLock() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true); |
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rl.writeLock().lock(); |
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rl.writeLock().unlock(); |
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rl.readLock().lock(); |
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rl.readLock().unlock(); |
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dl |
1.2 |
} |
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dl |
1.1 |
|
45 |
dl |
1.4 |
/** |
46 |
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* write-unlocking an unlocked lock throws IllegalMonitorStateException |
47 |
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*/ |
48 |
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public void testUnlock_IllegalMonitorStateException() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
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try { |
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rl.writeLock().unlock(); |
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shouldThrow(); |
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} catch(IllegalMonitorStateException success){} |
54 |
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} |
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1.1 |
|
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57 |
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1.4 |
/** |
58 |
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* write-lockInterruptibly is interruptible |
59 |
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*/ |
60 |
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public void testWriteLockInterruptibly_Interrupted() { |
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dl |
1.1 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
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lock.writeLock().lock(); |
63 |
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Thread t = new Thread(new Runnable() { |
64 |
dl |
1.4 |
public void run() { |
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try { |
66 |
dl |
1.1 |
lock.writeLock().lockInterruptibly(); |
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1.4 |
threadShouldThrow(); |
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} catch(InterruptedException success){} |
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dl |
1.1 |
} |
70 |
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}); |
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dl |
1.2 |
try { |
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t.start(); |
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t.interrupt(); |
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lock.writeLock().unlock(); |
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t.join(); |
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} catch(Exception e){ |
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dl |
1.4 |
unexpectedException(); |
78 |
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1.2 |
} |
79 |
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1.1 |
} |
80 |
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|
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dl |
1.4 |
/** |
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* timed write-trylock is interruptible |
83 |
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*/ |
84 |
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public void testWriteTryLock_Interrupted() { |
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dl |
1.1 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
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lock.writeLock().lock(); |
87 |
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Thread t = new Thread(new Runnable() { |
88 |
dl |
1.4 |
public void run() { |
89 |
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try { |
90 |
dl |
1.1 |
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
91 |
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1.4 |
threadShouldThrow(); |
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} catch(InterruptedException success){} |
93 |
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1.2 |
} |
94 |
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}); |
95 |
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try { |
96 |
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t.start(); |
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t.interrupt(); |
98 |
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lock.writeLock().unlock(); |
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t.join(); |
100 |
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} catch(Exception e){ |
101 |
dl |
1.4 |
unexpectedException(); |
102 |
dl |
1.2 |
} |
103 |
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} |
104 |
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105 |
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1.4 |
/** |
106 |
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* read-lockInterruptibly is interruptible |
107 |
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*/ |
108 |
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public void testReadLockInterruptibly_Interrupted() { |
109 |
dl |
1.2 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
110 |
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lock.writeLock().lock(); |
111 |
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Thread t = new Thread(new Runnable() { |
112 |
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1.4 |
public void run() { |
113 |
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try { |
114 |
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1.2 |
lock.readLock().lockInterruptibly(); |
115 |
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1.4 |
threadShouldThrow(); |
116 |
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} catch(InterruptedException success){} |
117 |
dl |
1.2 |
} |
118 |
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}); |
119 |
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try { |
120 |
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t.start(); |
121 |
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t.interrupt(); |
122 |
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lock.writeLock().unlock(); |
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t.join(); |
124 |
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} catch(Exception e){ |
125 |
dl |
1.4 |
unexpectedException(); |
126 |
dl |
1.2 |
} |
127 |
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} |
128 |
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129 |
dl |
1.4 |
/** |
130 |
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* timed read-trylock is interruptible |
131 |
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*/ |
132 |
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public void testReadTryLock_Interrupted() { |
133 |
dl |
1.2 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
134 |
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lock.writeLock().lock(); |
135 |
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Thread t = new Thread(new Runnable() { |
136 |
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1.4 |
public void run() { |
137 |
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try { |
138 |
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1.2 |
lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS); |
139 |
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1.4 |
threadShouldThrow(); |
140 |
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} catch(InterruptedException success){} |
141 |
dl |
1.1 |
} |
142 |
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}); |
143 |
dl |
1.2 |
try { |
144 |
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t.start(); |
145 |
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t.interrupt(); |
146 |
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t.join(); |
147 |
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} catch(Exception e){ |
148 |
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1.4 |
unexpectedException(); |
149 |
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1.2 |
} |
150 |
dl |
1.1 |
} |
151 |
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152 |
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153 |
dl |
1.4 |
/** |
154 |
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* write-trylock fails if locked |
155 |
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*/ |
156 |
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public void testWriteTryLockWhenLocked() { |
157 |
dl |
1.2 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
158 |
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lock.writeLock().lock(); |
159 |
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Thread t = new Thread(new Runnable() { |
160 |
dl |
1.4 |
public void run() { |
161 |
dl |
1.3 |
threadAssertFalse(lock.writeLock().tryLock()); |
162 |
dl |
1.2 |
} |
163 |
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}); |
164 |
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try { |
165 |
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t.start(); |
166 |
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t.join(); |
167 |
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lock.writeLock().unlock(); |
168 |
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} catch(Exception e){ |
169 |
dl |
1.4 |
unexpectedException(); |
170 |
dl |
1.2 |
} |
171 |
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} |
172 |
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173 |
dl |
1.4 |
/** |
174 |
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* read-trylock fails if locked |
175 |
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*/ |
176 |
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public void testReadTryLockWhenLocked() { |
177 |
dl |
1.2 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
178 |
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lock.writeLock().lock(); |
179 |
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Thread t = new Thread(new Runnable() { |
180 |
dl |
1.4 |
public void run() { |
181 |
dl |
1.3 |
threadAssertFalse(lock.readLock().tryLock()); |
182 |
dl |
1.2 |
} |
183 |
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}); |
184 |
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try { |
185 |
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t.start(); |
186 |
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t.join(); |
187 |
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lock.writeLock().unlock(); |
188 |
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} catch(Exception e){ |
189 |
dl |
1.4 |
unexpectedException(); |
190 |
dl |
1.2 |
} |
191 |
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} |
192 |
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193 |
dl |
1.4 |
/** |
194 |
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* Multiple threads can hold a read lock when not write-locked |
195 |
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*/ |
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dl |
1.2 |
public void testMultipleReadLocks() { |
197 |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
198 |
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lock.readLock().lock(); |
199 |
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Thread t = new Thread(new Runnable() { |
200 |
dl |
1.4 |
public void run() { |
201 |
dl |
1.3 |
threadAssertTrue(lock.readLock().tryLock()); |
202 |
dl |
1.2 |
lock.readLock().unlock(); |
203 |
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} |
204 |
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}); |
205 |
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try { |
206 |
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t.start(); |
207 |
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t.join(); |
208 |
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lock.readLock().unlock(); |
209 |
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} catch(Exception e){ |
210 |
dl |
1.4 |
unexpectedException(); |
211 |
dl |
1.2 |
} |
212 |
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} |
213 |
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214 |
dl |
1.4 |
/** |
215 |
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* A writelock succeeds after reading threads unlock |
216 |
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*/ |
217 |
dl |
1.2 |
public void testWriteAfterMultipleReadLocks() { |
218 |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
219 |
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lock.readLock().lock(); |
220 |
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Thread t1 = new Thread(new Runnable() { |
221 |
dl |
1.4 |
public void run() { |
222 |
dl |
1.2 |
lock.readLock().lock(); |
223 |
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lock.readLock().unlock(); |
224 |
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} |
225 |
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}); |
226 |
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Thread t2 = new Thread(new Runnable() { |
227 |
dl |
1.4 |
public void run() { |
228 |
dl |
1.2 |
lock.writeLock().lock(); |
229 |
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lock.writeLock().unlock(); |
230 |
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} |
231 |
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}); |
232 |
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233 |
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try { |
234 |
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t1.start(); |
235 |
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t2.start(); |
236 |
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Thread.sleep(SHORT_DELAY_MS); |
237 |
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lock.readLock().unlock(); |
238 |
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t1.join(MEDIUM_DELAY_MS); |
239 |
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t2.join(MEDIUM_DELAY_MS); |
240 |
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assertTrue(!t1.isAlive()); |
241 |
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assertTrue(!t2.isAlive()); |
242 |
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243 |
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} catch(Exception e){ |
244 |
dl |
1.4 |
unexpectedException(); |
245 |
dl |
1.2 |
} |
246 |
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} |
247 |
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|
248 |
dl |
1.4 |
/** |
249 |
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* Readlocks succeed after a writing thread unlocks |
250 |
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*/ |
251 |
dl |
1.2 |
public void testReadAfterWriteLock() { |
252 |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
253 |
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lock.writeLock().lock(); |
254 |
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Thread t1 = new Thread(new Runnable() { |
255 |
dl |
1.4 |
public void run() { |
256 |
dl |
1.2 |
lock.readLock().lock(); |
257 |
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lock.readLock().unlock(); |
258 |
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} |
259 |
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}); |
260 |
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Thread t2 = new Thread(new Runnable() { |
261 |
dl |
1.4 |
public void run() { |
262 |
dl |
1.2 |
lock.readLock().lock(); |
263 |
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lock.readLock().unlock(); |
264 |
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} |
265 |
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}); |
266 |
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267 |
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try { |
268 |
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t1.start(); |
269 |
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t2.start(); |
270 |
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Thread.sleep(SHORT_DELAY_MS); |
271 |
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lock.writeLock().unlock(); |
272 |
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t1.join(MEDIUM_DELAY_MS); |
273 |
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t2.join(MEDIUM_DELAY_MS); |
274 |
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assertTrue(!t1.isAlive()); |
275 |
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assertTrue(!t2.isAlive()); |
276 |
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|
277 |
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} catch(Exception e){ |
278 |
dl |
1.4 |
unexpectedException(); |
279 |
dl |
1.2 |
} |
280 |
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} |
281 |
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|
282 |
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|
283 |
dl |
1.4 |
/** |
284 |
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* Read trylock succeeds if readlocked but not writelocked |
285 |
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*/ |
286 |
dl |
1.2 |
public void testTryLockWhenReadLocked() { |
287 |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
288 |
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lock.readLock().lock(); |
289 |
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Thread t = new Thread(new Runnable() { |
290 |
dl |
1.4 |
public void run() { |
291 |
dl |
1.3 |
threadAssertTrue(lock.readLock().tryLock()); |
292 |
dl |
1.2 |
lock.readLock().unlock(); |
293 |
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} |
294 |
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}); |
295 |
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try { |
296 |
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t.start(); |
297 |
|
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t.join(); |
298 |
|
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lock.readLock().unlock(); |
299 |
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} catch(Exception e){ |
300 |
dl |
1.4 |
unexpectedException(); |
301 |
dl |
1.2 |
} |
302 |
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} |
303 |
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|
304 |
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|
305 |
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|
306 |
dl |
1.4 |
/** |
307 |
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* write trylock fails when readlocked |
308 |
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*/ |
309 |
dl |
1.2 |
public void testWriteTryLockWhenReadLocked() { |
310 |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
311 |
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lock.readLock().lock(); |
312 |
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Thread t = new Thread(new Runnable() { |
313 |
dl |
1.4 |
public void run() { |
314 |
dl |
1.3 |
threadAssertFalse(lock.writeLock().tryLock()); |
315 |
dl |
1.2 |
} |
316 |
|
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}); |
317 |
|
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try { |
318 |
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t.start(); |
319 |
|
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t.join(); |
320 |
|
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lock.readLock().unlock(); |
321 |
|
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} catch(Exception e){ |
322 |
dl |
1.4 |
unexpectedException(); |
323 |
dl |
1.2 |
} |
324 |
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} |
325 |
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|
326 |
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|
327 |
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|
328 |
dl |
1.4 |
/** |
329 |
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* write timed trylock times out if locked |
330 |
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*/ |
331 |
|
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public void testWriteTryLock_Timeout() { |
332 |
dl |
1.2 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
333 |
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lock.writeLock().lock(); |
334 |
|
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Thread t = new Thread(new Runnable() { |
335 |
dl |
1.4 |
public void run() { |
336 |
dl |
1.2 |
try { |
337 |
dl |
1.3 |
threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS)); |
338 |
dl |
1.2 |
} catch (Exception ex) { |
339 |
dl |
1.4 |
threadUnexpectedException(); |
340 |
dl |
1.2 |
} |
341 |
|
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} |
342 |
|
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}); |
343 |
|
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try { |
344 |
|
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t.start(); |
345 |
|
|
t.join(); |
346 |
|
|
lock.writeLock().unlock(); |
347 |
|
|
} catch(Exception e){ |
348 |
dl |
1.4 |
unexpectedException(); |
349 |
dl |
1.2 |
} |
350 |
|
|
} |
351 |
|
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|
352 |
dl |
1.4 |
/** |
353 |
|
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* read timed trylock times out if write-locked |
354 |
|
|
*/ |
355 |
|
|
public void testReadTryLock_Timeout() { |
356 |
dl |
1.2 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
357 |
|
|
lock.writeLock().lock(); |
358 |
|
|
Thread t = new Thread(new Runnable() { |
359 |
dl |
1.4 |
public void run() { |
360 |
dl |
1.2 |
try { |
361 |
dl |
1.3 |
threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS)); |
362 |
dl |
1.2 |
} catch (Exception ex) { |
363 |
dl |
1.4 |
threadUnexpectedException(); |
364 |
dl |
1.2 |
} |
365 |
|
|
} |
366 |
|
|
}); |
367 |
|
|
try { |
368 |
|
|
t.start(); |
369 |
|
|
t.join(); |
370 |
|
|
lock.writeLock().unlock(); |
371 |
|
|
} catch(Exception e){ |
372 |
dl |
1.4 |
unexpectedException(); |
373 |
dl |
1.2 |
} |
374 |
|
|
} |
375 |
|
|
|
376 |
|
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|
377 |
dl |
1.4 |
/** |
378 |
|
|
* write lockInterruptibly succeeds if lock free else is interruptible |
379 |
|
|
*/ |
380 |
|
|
public void testWriteLockInterruptibly() { |
381 |
dl |
1.2 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
382 |
|
|
try { |
383 |
|
|
lock.writeLock().lockInterruptibly(); |
384 |
|
|
} catch(Exception e) { |
385 |
dl |
1.4 |
unexpectedException(); |
386 |
dl |
1.2 |
} |
387 |
|
|
Thread t = new Thread(new Runnable() { |
388 |
|
|
public void run() { |
389 |
|
|
try { |
390 |
|
|
lock.writeLock().lockInterruptibly(); |
391 |
dl |
1.4 |
threadShouldThrow(); |
392 |
dl |
1.2 |
} |
393 |
|
|
catch(InterruptedException success) { |
394 |
|
|
} |
395 |
|
|
} |
396 |
|
|
}); |
397 |
|
|
try { |
398 |
|
|
t.start(); |
399 |
|
|
t.interrupt(); |
400 |
|
|
t.join(); |
401 |
|
|
lock.writeLock().unlock(); |
402 |
|
|
} catch(Exception e){ |
403 |
dl |
1.4 |
unexpectedException(); |
404 |
dl |
1.2 |
} |
405 |
|
|
} |
406 |
|
|
|
407 |
dl |
1.4 |
/** |
408 |
|
|
* read lockInterruptibly succeeds if lock free else is interruptible |
409 |
|
|
*/ |
410 |
|
|
public void testReadLockInterruptibly() { |
411 |
dl |
1.2 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
412 |
|
|
try { |
413 |
|
|
lock.writeLock().lockInterruptibly(); |
414 |
|
|
} catch(Exception e) { |
415 |
dl |
1.4 |
unexpectedException(); |
416 |
dl |
1.2 |
} |
417 |
|
|
Thread t = new Thread(new Runnable() { |
418 |
|
|
public void run() { |
419 |
|
|
try { |
420 |
|
|
lock.readLock().lockInterruptibly(); |
421 |
dl |
1.4 |
threadShouldThrow(); |
422 |
dl |
1.2 |
} |
423 |
|
|
catch(InterruptedException success) { |
424 |
|
|
} |
425 |
|
|
} |
426 |
|
|
}); |
427 |
|
|
try { |
428 |
|
|
t.start(); |
429 |
|
|
t.interrupt(); |
430 |
|
|
t.join(); |
431 |
|
|
lock.writeLock().unlock(); |
432 |
|
|
} catch(Exception e){ |
433 |
dl |
1.4 |
unexpectedException(); |
434 |
dl |
1.2 |
} |
435 |
|
|
} |
436 |
|
|
|
437 |
dl |
1.4 |
/** |
438 |
|
|
* Calling await without holding lock throws IllegalMonitorStateException |
439 |
|
|
*/ |
440 |
dl |
1.2 |
public void testAwait_IllegalMonitor() { |
441 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
442 |
|
|
final Condition c = lock.writeLock().newCondition(); |
443 |
|
|
try { |
444 |
|
|
c.await(); |
445 |
dl |
1.4 |
shouldThrow(); |
446 |
dl |
1.2 |
} |
447 |
|
|
catch (IllegalMonitorStateException success) { |
448 |
|
|
} |
449 |
|
|
catch (Exception ex) { |
450 |
dl |
1.4 |
shouldThrow(); |
451 |
dl |
1.2 |
} |
452 |
|
|
} |
453 |
|
|
|
454 |
dl |
1.4 |
/** |
455 |
|
|
* Calling signal without holding lock throws IllegalMonitorStateException |
456 |
|
|
*/ |
457 |
dl |
1.2 |
public void testSignal_IllegalMonitor() { |
458 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
459 |
|
|
final Condition c = lock.writeLock().newCondition(); |
460 |
|
|
try { |
461 |
|
|
c.signal(); |
462 |
dl |
1.4 |
shouldThrow(); |
463 |
dl |
1.2 |
} |
464 |
|
|
catch (IllegalMonitorStateException success) { |
465 |
|
|
} |
466 |
|
|
catch (Exception ex) { |
467 |
dl |
1.4 |
unexpectedException(); |
468 |
dl |
1.2 |
} |
469 |
|
|
} |
470 |
|
|
|
471 |
dl |
1.4 |
/** |
472 |
|
|
* awaitNanos without a signal times out |
473 |
|
|
*/ |
474 |
dl |
1.2 |
public void testAwaitNanos_Timeout() { |
475 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
476 |
|
|
final Condition c = lock.writeLock().newCondition(); |
477 |
|
|
try { |
478 |
|
|
lock.writeLock().lock(); |
479 |
|
|
long t = c.awaitNanos(100); |
480 |
|
|
assertTrue(t <= 0); |
481 |
|
|
lock.writeLock().unlock(); |
482 |
|
|
} |
483 |
|
|
catch (Exception ex) { |
484 |
dl |
1.4 |
unexpectedException(); |
485 |
dl |
1.2 |
} |
486 |
|
|
} |
487 |
|
|
|
488 |
dl |
1.4 |
|
489 |
|
|
/** |
490 |
|
|
* timed await without a signal times out |
491 |
|
|
*/ |
492 |
dl |
1.2 |
public void testAwait_Timeout() { |
493 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
494 |
|
|
final Condition c = lock.writeLock().newCondition(); |
495 |
|
|
try { |
496 |
|
|
lock.writeLock().lock(); |
497 |
|
|
assertFalse(c.await(10, TimeUnit.MILLISECONDS)); |
498 |
|
|
lock.writeLock().unlock(); |
499 |
|
|
} |
500 |
|
|
catch (Exception ex) { |
501 |
dl |
1.4 |
unexpectedException(); |
502 |
dl |
1.2 |
} |
503 |
|
|
} |
504 |
|
|
|
505 |
dl |
1.4 |
/** |
506 |
|
|
* awaitUntil without a signal times out |
507 |
|
|
*/ |
508 |
dl |
1.2 |
public void testAwaitUntil_Timeout() { |
509 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
510 |
|
|
final Condition c = lock.writeLock().newCondition(); |
511 |
|
|
try { |
512 |
|
|
lock.writeLock().lock(); |
513 |
|
|
java.util.Date d = new java.util.Date(); |
514 |
|
|
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
515 |
|
|
lock.writeLock().unlock(); |
516 |
|
|
} |
517 |
|
|
catch (Exception ex) { |
518 |
dl |
1.4 |
unexpectedException(); |
519 |
dl |
1.2 |
} |
520 |
|
|
} |
521 |
dl |
1.1 |
|
522 |
dl |
1.4 |
/** |
523 |
|
|
* await returns when signalled |
524 |
|
|
*/ |
525 |
dl |
1.2 |
public void testAwait() { |
526 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
527 |
|
|
final Condition c = lock.writeLock().newCondition(); |
528 |
|
|
Thread t = new Thread(new Runnable() { |
529 |
|
|
public void run() { |
530 |
|
|
try { |
531 |
|
|
lock.writeLock().lock(); |
532 |
|
|
c.await(); |
533 |
|
|
lock.writeLock().unlock(); |
534 |
|
|
} |
535 |
|
|
catch(InterruptedException e) { |
536 |
dl |
1.4 |
threadUnexpectedException(); |
537 |
dl |
1.2 |
} |
538 |
|
|
} |
539 |
|
|
}); |
540 |
|
|
|
541 |
|
|
try { |
542 |
|
|
t.start(); |
543 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
544 |
|
|
lock.writeLock().lock(); |
545 |
|
|
c.signal(); |
546 |
|
|
lock.writeLock().unlock(); |
547 |
|
|
t.join(SHORT_DELAY_MS); |
548 |
|
|
assertFalse(t.isAlive()); |
549 |
|
|
} |
550 |
|
|
catch (Exception ex) { |
551 |
dl |
1.4 |
unexpectedException(); |
552 |
dl |
1.2 |
} |
553 |
|
|
} |
554 |
|
|
|
555 |
dl |
1.4 |
/** |
556 |
|
|
* awaitUninterruptibly doesn't abort on interrupt |
557 |
|
|
*/ |
558 |
dl |
1.2 |
public void testAwaitUninterruptibly() { |
559 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
560 |
|
|
final Condition c = lock.writeLock().newCondition(); |
561 |
|
|
Thread t = new Thread(new Runnable() { |
562 |
|
|
public void run() { |
563 |
|
|
lock.writeLock().lock(); |
564 |
|
|
c.awaitUninterruptibly(); |
565 |
|
|
lock.writeLock().unlock(); |
566 |
|
|
} |
567 |
|
|
}); |
568 |
|
|
|
569 |
|
|
try { |
570 |
|
|
t.start(); |
571 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
572 |
|
|
t.interrupt(); |
573 |
|
|
lock.writeLock().lock(); |
574 |
|
|
c.signal(); |
575 |
|
|
lock.writeLock().unlock(); |
576 |
dl |
1.4 |
assert(t.isInterrupted()); |
577 |
dl |
1.2 |
t.join(SHORT_DELAY_MS); |
578 |
|
|
assertFalse(t.isAlive()); |
579 |
|
|
} |
580 |
|
|
catch (Exception ex) { |
581 |
dl |
1.4 |
unexpectedException(); |
582 |
dl |
1.2 |
} |
583 |
|
|
} |
584 |
|
|
|
585 |
dl |
1.4 |
/** |
586 |
|
|
* await is interruptible |
587 |
|
|
*/ |
588 |
dl |
1.2 |
public void testAwait_Interrupt() { |
589 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
590 |
|
|
final Condition c = lock.writeLock().newCondition(); |
591 |
|
|
Thread t = new Thread(new Runnable() { |
592 |
|
|
public void run() { |
593 |
|
|
try { |
594 |
|
|
lock.writeLock().lock(); |
595 |
|
|
c.await(); |
596 |
|
|
lock.writeLock().unlock(); |
597 |
dl |
1.4 |
threadShouldThrow(); |
598 |
dl |
1.2 |
} |
599 |
|
|
catch(InterruptedException success) { |
600 |
|
|
} |
601 |
|
|
} |
602 |
|
|
}); |
603 |
|
|
|
604 |
|
|
try { |
605 |
|
|
t.start(); |
606 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
607 |
|
|
t.interrupt(); |
608 |
|
|
t.join(SHORT_DELAY_MS); |
609 |
|
|
assertFalse(t.isAlive()); |
610 |
|
|
} |
611 |
|
|
catch (Exception ex) { |
612 |
dl |
1.4 |
unexpectedException(); |
613 |
dl |
1.2 |
} |
614 |
|
|
} |
615 |
|
|
|
616 |
dl |
1.4 |
/** |
617 |
|
|
* awaitNanos is interruptible |
618 |
|
|
*/ |
619 |
dl |
1.2 |
public void testAwaitNanos_Interrupt() { |
620 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
621 |
|
|
final Condition c = lock.writeLock().newCondition(); |
622 |
|
|
Thread t = new Thread(new Runnable() { |
623 |
|
|
public void run() { |
624 |
|
|
try { |
625 |
|
|
lock.writeLock().lock(); |
626 |
|
|
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
627 |
|
|
lock.writeLock().unlock(); |
628 |
dl |
1.4 |
threadShouldThrow(); |
629 |
dl |
1.2 |
} |
630 |
|
|
catch(InterruptedException success) { |
631 |
|
|
} |
632 |
|
|
} |
633 |
|
|
}); |
634 |
|
|
|
635 |
|
|
try { |
636 |
|
|
t.start(); |
637 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
638 |
|
|
t.interrupt(); |
639 |
|
|
t.join(SHORT_DELAY_MS); |
640 |
|
|
assertFalse(t.isAlive()); |
641 |
|
|
} |
642 |
|
|
catch (Exception ex) { |
643 |
dl |
1.4 |
unexpectedException(); |
644 |
dl |
1.2 |
} |
645 |
|
|
} |
646 |
dl |
1.1 |
|
647 |
dl |
1.4 |
/** |
648 |
|
|
* awaitUntil is interruptible |
649 |
|
|
*/ |
650 |
dl |
1.2 |
public void testAwaitUntil_Interrupt() { |
651 |
dl |
1.1 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
652 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
653 |
dl |
1.1 |
Thread t = new Thread(new Runnable() { |
654 |
|
|
public void run() { |
655 |
|
|
try { |
656 |
dl |
1.2 |
lock.writeLock().lock(); |
657 |
|
|
java.util.Date d = new java.util.Date(); |
658 |
|
|
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
659 |
|
|
lock.writeLock().unlock(); |
660 |
dl |
1.4 |
threadShouldThrow(); |
661 |
dl |
1.2 |
} |
662 |
|
|
catch(InterruptedException success) { |
663 |
|
|
} |
664 |
|
|
} |
665 |
|
|
}); |
666 |
|
|
|
667 |
|
|
try { |
668 |
|
|
t.start(); |
669 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
670 |
|
|
t.interrupt(); |
671 |
|
|
t.join(SHORT_DELAY_MS); |
672 |
|
|
assertFalse(t.isAlive()); |
673 |
|
|
} |
674 |
|
|
catch (Exception ex) { |
675 |
dl |
1.4 |
unexpectedException(); |
676 |
dl |
1.2 |
} |
677 |
|
|
} |
678 |
|
|
|
679 |
dl |
1.4 |
/** |
680 |
|
|
* signalAll wakes up all threads |
681 |
|
|
*/ |
682 |
dl |
1.2 |
public void testSignalAll() { |
683 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
684 |
|
|
final Condition c = lock.writeLock().newCondition(); |
685 |
|
|
Thread t1 = new Thread(new Runnable() { |
686 |
|
|
public void run() { |
687 |
|
|
try { |
688 |
|
|
lock.writeLock().lock(); |
689 |
|
|
c.await(); |
690 |
|
|
lock.writeLock().unlock(); |
691 |
|
|
} |
692 |
|
|
catch(InterruptedException e) { |
693 |
dl |
1.4 |
threadUnexpectedException(); |
694 |
dl |
1.2 |
} |
695 |
|
|
} |
696 |
|
|
}); |
697 |
|
|
|
698 |
|
|
Thread t2 = new Thread(new Runnable() { |
699 |
|
|
public void run() { |
700 |
|
|
try { |
701 |
|
|
lock.writeLock().lock(); |
702 |
|
|
c.await(); |
703 |
|
|
lock.writeLock().unlock(); |
704 |
dl |
1.1 |
} |
705 |
dl |
1.2 |
catch(InterruptedException e) { |
706 |
dl |
1.4 |
threadUnexpectedException(); |
707 |
dl |
1.2 |
} |
708 |
dl |
1.1 |
} |
709 |
|
|
}); |
710 |
dl |
1.2 |
|
711 |
|
|
try { |
712 |
|
|
t1.start(); |
713 |
|
|
t2.start(); |
714 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
715 |
|
|
lock.writeLock().lock(); |
716 |
|
|
c.signalAll(); |
717 |
|
|
lock.writeLock().unlock(); |
718 |
|
|
t1.join(SHORT_DELAY_MS); |
719 |
|
|
t2.join(SHORT_DELAY_MS); |
720 |
|
|
assertFalse(t1.isAlive()); |
721 |
|
|
assertFalse(t2.isAlive()); |
722 |
|
|
} |
723 |
|
|
catch (Exception ex) { |
724 |
dl |
1.4 |
unexpectedException(); |
725 |
dl |
1.2 |
} |
726 |
|
|
} |
727 |
|
|
|
728 |
dl |
1.4 |
/** |
729 |
|
|
* A serialized lock deserializes as unlocked |
730 |
|
|
*/ |
731 |
dl |
1.2 |
public void testSerialization() { |
732 |
|
|
ReentrantReadWriteLock l = new ReentrantReadWriteLock(); |
733 |
|
|
l.readLock().lock(); |
734 |
|
|
l.readLock().unlock(); |
735 |
|
|
|
736 |
|
|
try { |
737 |
|
|
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
738 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
739 |
|
|
out.writeObject(l); |
740 |
|
|
out.close(); |
741 |
|
|
|
742 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
743 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
744 |
|
|
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
745 |
|
|
r.readLock().lock(); |
746 |
|
|
r.readLock().unlock(); |
747 |
|
|
} catch(Exception e){ |
748 |
|
|
e.printStackTrace(); |
749 |
dl |
1.4 |
unexpectedException(); |
750 |
dl |
1.2 |
} |
751 |
dl |
1.1 |
} |
752 |
dl |
1.2 |
|
753 |
dl |
1.1 |
|
754 |
|
|
} |