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/* |
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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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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, 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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import java.io.*; |
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import java.util.*; |
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|
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public class ReentrantReadWriteLockTest extends TestCase { |
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static int HOLD_COUNT_TEST_LIMIT = 20; |
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|
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public class ReentrantReadWriteLockTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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junit.textui.TestRunner.run (suite()); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(ReentrantReadWriteLockTest.class); |
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} |
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|
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/** |
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* A runnable calling lockInterruptibly |
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*/ |
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class InterruptibleLockRunnable implements Runnable { |
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final ReentrantReadWriteLock lock; |
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InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
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public void run() { |
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try { |
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lock.writeLock().lockInterruptibly(); |
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} catch(InterruptedException success){} |
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} |
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} |
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|
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|
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/** |
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* A runnable calling lockInterruptibly that expects to be |
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* interrupted |
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*/ |
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class InterruptedLockRunnable implements Runnable { |
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final ReentrantReadWriteLock lock; |
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InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
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public void run() { |
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try { |
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lock.writeLock().lockInterruptibly(); |
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threadShouldThrow(); |
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} catch(InterruptedException success){} |
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} |
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} |
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|
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/** |
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* Subclass to expose protected methods |
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*/ |
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static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock { |
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PublicReentrantReadWriteLock() { super(); } |
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public Collection<Thread> getQueuedThreads() { |
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return super.getQueuedThreads(); |
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} |
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public Collection<Thread> getWaitingThreads(Condition c) { |
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return super.getWaitingThreads(c); |
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} |
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} |
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|
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private static long SHORT_DELAY_MS = 100; |
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private static long MEDIUM_DELAY_MS = 1000; |
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private static long LONG_DELAY_MS = 10000; |
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|
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/* |
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* Unlocks an unlocked lock, throws Illegal Monitor State |
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* |
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/** |
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* Constructor sets given fairness, and is in unlocked state |
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*/ |
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|
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public void testIllegalMonitorStateException(){ |
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public void testConstructor() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
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try{ |
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assertFalse(rl.isFair()); |
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assertFalse(rl.isWriteLocked()); |
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assertEquals(0, rl.getReadLockCount()); |
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ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true); |
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assertTrue(r2.isFair()); |
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assertFalse(r2.isWriteLocked()); |
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assertEquals(0, r2.getReadLockCount()); |
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} |
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|
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/** |
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* write-locking and read-locking an unlocked lock succeed |
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*/ |
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public void testLock() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
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rl.writeLock().lock(); |
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assertTrue(rl.isWriteLocked()); |
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assertTrue(rl.isWriteLockedByCurrentThread()); |
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assertTrue(rl.writeLock().isHeldByCurrentThread()); |
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assertEquals(0, rl.getReadLockCount()); |
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rl.writeLock().unlock(); |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
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assertFalse(rl.writeLock().isHeldByCurrentThread()); |
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assertEquals(0, rl.getReadLockCount()); |
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rl.readLock().lock(); |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
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assertEquals(1, rl.getReadLockCount()); |
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rl.readLock().unlock(); |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
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assertEquals(0, rl.getReadLockCount()); |
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} |
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|
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|
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/** |
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* 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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assertTrue(rl.isWriteLocked()); |
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assertTrue(rl.isWriteLockedByCurrentThread()); |
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assertTrue(rl.writeLock().isHeldByCurrentThread()); |
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assertEquals(0, rl.getReadLockCount()); |
115 |
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rl.writeLock().unlock(); |
116 |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
118 |
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assertFalse(rl.writeLock().isHeldByCurrentThread()); |
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assertEquals(0, rl.getReadLockCount()); |
120 |
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rl.readLock().lock(); |
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assertFalse(rl.isWriteLocked()); |
122 |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
123 |
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assertEquals(1, rl.getReadLockCount()); |
124 |
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rl.readLock().unlock(); |
125 |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
127 |
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assertEquals(0, rl.getReadLockCount()); |
128 |
> |
} |
129 |
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|
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/** |
131 |
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* getWriteHoldCount returns number of recursive holds |
132 |
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*/ |
133 |
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public void testGetWriteHoldCount() { |
134 |
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ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
135 |
> |
for(int i = 1; i <= SIZE; i++) { |
136 |
> |
lock.writeLock().lock(); |
137 |
> |
assertEquals(i,lock.getWriteHoldCount()); |
138 |
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} |
139 |
> |
for(int i = SIZE; i > 0; i--) { |
140 |
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lock.writeLock().unlock(); |
141 |
> |
assertEquals(i-1,lock.getWriteHoldCount()); |
142 |
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} |
143 |
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} |
144 |
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|
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/** |
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* WriteLock.getHoldCount returns number of recursive holds |
147 |
> |
*/ |
148 |
> |
public void testGetHoldCount() { |
149 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
150 |
> |
for(int i = 1; i <= SIZE; i++) { |
151 |
> |
lock.writeLock().lock(); |
152 |
> |
assertEquals(i,lock.writeLock().getHoldCount()); |
153 |
> |
} |
154 |
> |
for(int i = SIZE; i > 0; i--) { |
155 |
> |
lock.writeLock().unlock(); |
156 |
> |
assertEquals(i-1,lock.writeLock().getHoldCount()); |
157 |
> |
} |
158 |
> |
} |
159 |
> |
|
160 |
> |
/** |
161 |
> |
* getReadHoldCount returns number of recursive holds |
162 |
> |
*/ |
163 |
> |
public void testGetReadHoldCount() { |
164 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
165 |
> |
for(int i = 1; i <= SIZE; i++) { |
166 |
> |
lock.readLock().lock(); |
167 |
> |
assertEquals(i,lock.getReadHoldCount()); |
168 |
> |
} |
169 |
> |
for(int i = SIZE; i > 0; i--) { |
170 |
> |
lock.readLock().unlock(); |
171 |
> |
assertEquals(i-1,lock.getReadHoldCount()); |
172 |
> |
} |
173 |
> |
} |
174 |
> |
|
175 |
> |
|
176 |
> |
/** |
177 |
> |
* write-unlocking an unlocked lock throws IllegalMonitorStateException |
178 |
> |
*/ |
179 |
> |
public void testUnlock_IllegalMonitorStateException() { |
180 |
> |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
181 |
> |
try { |
182 |
|
rl.writeLock().unlock(); |
183 |
< |
fail("Should of thown Illegal Monitor State Exception"); |
183 |
> |
shouldThrow(); |
184 |
> |
} catch(IllegalMonitorStateException success){} |
185 |
> |
} |
186 |
|
|
39 |
– |
}catch(IllegalMonitorStateException sucess){} |
187 |
|
|
188 |
+ |
/** |
189 |
+ |
* write-lockInterruptibly is interruptible |
190 |
+ |
*/ |
191 |
+ |
public void testWriteLockInterruptibly_Interrupted() { |
192 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
193 |
+ |
Thread t = new Thread(new Runnable() { |
194 |
+ |
public void run() { |
195 |
+ |
try { |
196 |
+ |
lock.writeLock().lockInterruptibly(); |
197 |
+ |
lock.writeLock().unlock(); |
198 |
+ |
lock.writeLock().lockInterruptibly(); |
199 |
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lock.writeLock().unlock(); |
200 |
+ |
} catch(InterruptedException success){} |
201 |
+ |
} |
202 |
+ |
}); |
203 |
+ |
try { |
204 |
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lock.writeLock().lock(); |
205 |
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t.start(); |
206 |
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Thread.sleep(SHORT_DELAY_MS); |
207 |
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t.interrupt(); |
208 |
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Thread.sleep(SHORT_DELAY_MS); |
209 |
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lock.writeLock().unlock(); |
210 |
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t.join(); |
211 |
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} catch(Exception e){ |
212 |
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unexpectedException(); |
213 |
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} |
214 |
+ |
} |
215 |
|
|
216 |
+ |
/** |
217 |
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* timed write-tryLock is interruptible |
218 |
+ |
*/ |
219 |
+ |
public void testWriteTryLock_Interrupted() { |
220 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
221 |
+ |
lock.writeLock().lock(); |
222 |
+ |
Thread t = new Thread(new Runnable() { |
223 |
+ |
public void run() { |
224 |
+ |
try { |
225 |
+ |
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
226 |
+ |
} catch(InterruptedException success){} |
227 |
+ |
} |
228 |
+ |
}); |
229 |
+ |
try { |
230 |
+ |
t.start(); |
231 |
+ |
t.interrupt(); |
232 |
+ |
lock.writeLock().unlock(); |
233 |
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t.join(); |
234 |
+ |
} catch(Exception e){ |
235 |
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unexpectedException(); |
236 |
+ |
} |
237 |
|
} |
238 |
< |
|
239 |
< |
/* |
240 |
< |
* makes a lock, locks it, tries to aquire the lock in another thread |
46 |
< |
* interrupts that thread and waits for an interrupted Exception to |
47 |
< |
* be thrown. |
238 |
> |
|
239 |
> |
/** |
240 |
> |
* read-lockInterruptibly is interruptible |
241 |
|
*/ |
242 |
+ |
public void testReadLockInterruptibly_Interrupted() { |
243 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
244 |
+ |
lock.writeLock().lock(); |
245 |
+ |
Thread t = new Thread(new Runnable() { |
246 |
+ |
public void run() { |
247 |
+ |
try { |
248 |
+ |
lock.readLock().lockInterruptibly(); |
249 |
+ |
} catch(InterruptedException success){} |
250 |
+ |
} |
251 |
+ |
}); |
252 |
+ |
try { |
253 |
+ |
t.start(); |
254 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
255 |
+ |
t.interrupt(); |
256 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
257 |
+ |
lock.writeLock().unlock(); |
258 |
+ |
t.join(); |
259 |
+ |
} catch(Exception e){ |
260 |
+ |
unexpectedException(); |
261 |
+ |
} |
262 |
+ |
} |
263 |
|
|
264 |
< |
public void testInterruptedException(){ |
264 |
> |
/** |
265 |
> |
* timed read-tryLock is interruptible |
266 |
> |
*/ |
267 |
> |
public void testReadTryLock_Interrupted() { |
268 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
269 |
|
lock.writeLock().lock(); |
270 |
|
Thread t = new Thread(new Runnable() { |
271 |
< |
public void run(){ |
272 |
< |
try{ |
273 |
< |
lock.writeLock().lockInterruptibly(); |
274 |
< |
fail("should throw"); |
275 |
< |
}catch(InterruptedException sucess){} |
271 |
> |
public void run() { |
272 |
> |
try { |
273 |
> |
lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS); |
274 |
> |
threadShouldThrow(); |
275 |
> |
} catch(InterruptedException success){} |
276 |
|
} |
277 |
|
}); |
278 |
< |
t.start(); |
279 |
< |
t.interrupt(); |
280 |
< |
lock.writeLock().unlock(); |
281 |
< |
} |
278 |
> |
try { |
279 |
> |
t.start(); |
280 |
> |
t.interrupt(); |
281 |
> |
t.join(); |
282 |
> |
} catch(Exception e){ |
283 |
> |
unexpectedException(); |
284 |
> |
} |
285 |
> |
} |
286 |
|
|
287 |
< |
/* |
288 |
< |
* tests for interrupted exception on a timed wait |
289 |
< |
* |
287 |
> |
|
288 |
> |
/** |
289 |
> |
* write-tryLock fails if locked |
290 |
|
*/ |
291 |
< |
|
291 |
> |
public void testWriteTryLockWhenLocked() { |
292 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
293 |
> |
lock.writeLock().lock(); |
294 |
> |
Thread t = new Thread(new Runnable() { |
295 |
> |
public void run() { |
296 |
> |
threadAssertFalse(lock.writeLock().tryLock()); |
297 |
> |
} |
298 |
> |
}); |
299 |
> |
try { |
300 |
> |
t.start(); |
301 |
> |
t.join(); |
302 |
> |
lock.writeLock().unlock(); |
303 |
> |
} catch(Exception e){ |
304 |
> |
unexpectedException(); |
305 |
> |
} |
306 |
> |
} |
307 |
|
|
308 |
< |
public void testInterruptedException2(){ |
308 |
> |
/** |
309 |
> |
* read-tryLock fails if locked |
310 |
> |
*/ |
311 |
> |
public void testReadTryLockWhenLocked() { |
312 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
313 |
|
lock.writeLock().lock(); |
314 |
|
Thread t = new Thread(new Runnable() { |
315 |
< |
public void run(){ |
316 |
< |
try{ |
317 |
< |
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
318 |
< |
fail("should throw"); |
319 |
< |
}catch(InterruptedException sucess){} |
315 |
> |
public void run() { |
316 |
> |
threadAssertFalse(lock.readLock().tryLock()); |
317 |
> |
} |
318 |
> |
}); |
319 |
> |
try { |
320 |
> |
t.start(); |
321 |
> |
t.join(); |
322 |
> |
lock.writeLock().unlock(); |
323 |
> |
} catch(Exception e){ |
324 |
> |
unexpectedException(); |
325 |
> |
} |
326 |
> |
} |
327 |
> |
|
328 |
> |
/** |
329 |
> |
* Multiple threads can hold a read lock when not write-locked |
330 |
> |
*/ |
331 |
> |
public void testMultipleReadLocks() { |
332 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
333 |
> |
lock.readLock().lock(); |
334 |
> |
Thread t = new Thread(new Runnable() { |
335 |
> |
public void run() { |
336 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
337 |
> |
lock.readLock().unlock(); |
338 |
> |
} |
339 |
> |
}); |
340 |
> |
try { |
341 |
> |
t.start(); |
342 |
> |
t.join(); |
343 |
> |
lock.readLock().unlock(); |
344 |
> |
} catch(Exception e){ |
345 |
> |
unexpectedException(); |
346 |
> |
} |
347 |
> |
} |
348 |
> |
|
349 |
> |
/** |
350 |
> |
* A writelock succeeds after reading threads unlock |
351 |
> |
*/ |
352 |
> |
public void testWriteAfterMultipleReadLocks() { |
353 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
354 |
> |
lock.readLock().lock(); |
355 |
> |
Thread t1 = new Thread(new Runnable() { |
356 |
> |
public void run() { |
357 |
> |
lock.readLock().lock(); |
358 |
> |
lock.readLock().unlock(); |
359 |
> |
} |
360 |
> |
}); |
361 |
> |
Thread t2 = new Thread(new Runnable() { |
362 |
> |
public void run() { |
363 |
> |
lock.writeLock().lock(); |
364 |
> |
lock.writeLock().unlock(); |
365 |
> |
} |
366 |
> |
}); |
367 |
> |
|
368 |
> |
try { |
369 |
> |
t1.start(); |
370 |
> |
t2.start(); |
371 |
> |
Thread.sleep(SHORT_DELAY_MS); |
372 |
> |
lock.readLock().unlock(); |
373 |
> |
t1.join(MEDIUM_DELAY_MS); |
374 |
> |
t2.join(MEDIUM_DELAY_MS); |
375 |
> |
assertTrue(!t1.isAlive()); |
376 |
> |
assertTrue(!t2.isAlive()); |
377 |
> |
|
378 |
> |
} catch(Exception e){ |
379 |
> |
unexpectedException(); |
380 |
> |
} |
381 |
> |
} |
382 |
> |
|
383 |
> |
/** |
384 |
> |
* Readlocks succeed after a writing thread unlocks |
385 |
> |
*/ |
386 |
> |
public void testReadAfterWriteLock() { |
387 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
388 |
> |
lock.writeLock().lock(); |
389 |
> |
Thread t1 = new Thread(new Runnable() { |
390 |
> |
public void run() { |
391 |
> |
lock.readLock().lock(); |
392 |
> |
lock.readLock().unlock(); |
393 |
> |
} |
394 |
> |
}); |
395 |
> |
Thread t2 = new Thread(new Runnable() { |
396 |
> |
public void run() { |
397 |
> |
lock.readLock().lock(); |
398 |
> |
lock.readLock().unlock(); |
399 |
> |
} |
400 |
> |
}); |
401 |
> |
|
402 |
> |
try { |
403 |
> |
t1.start(); |
404 |
> |
t2.start(); |
405 |
> |
Thread.sleep(SHORT_DELAY_MS); |
406 |
> |
lock.writeLock().unlock(); |
407 |
> |
t1.join(MEDIUM_DELAY_MS); |
408 |
> |
t2.join(MEDIUM_DELAY_MS); |
409 |
> |
assertTrue(!t1.isAlive()); |
410 |
> |
assertTrue(!t2.isAlive()); |
411 |
> |
|
412 |
> |
} catch(Exception e){ |
413 |
> |
unexpectedException(); |
414 |
> |
} |
415 |
> |
} |
416 |
> |
|
417 |
> |
/** |
418 |
> |
* Read trylock succeeds if write locked by current thread |
419 |
> |
*/ |
420 |
> |
public void testReadHoldingWriteLock() { |
421 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
422 |
> |
lock.writeLock().lock(); |
423 |
> |
assertTrue(lock.readLock().tryLock()); |
424 |
> |
lock.readLock().unlock(); |
425 |
> |
lock.writeLock().unlock(); |
426 |
> |
} |
427 |
> |
|
428 |
> |
/** |
429 |
> |
* Read lock succeeds if write locked by current thread even if |
430 |
> |
* other threads are waiting for readlock |
431 |
> |
*/ |
432 |
> |
public void testReadHoldingWriteLock2() { |
433 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
434 |
> |
lock.writeLock().lock(); |
435 |
> |
Thread t1 = new Thread(new Runnable() { |
436 |
> |
public void run() { |
437 |
> |
lock.readLock().lock(); |
438 |
> |
lock.readLock().unlock(); |
439 |
> |
} |
440 |
> |
}); |
441 |
> |
Thread t2 = new Thread(new Runnable() { |
442 |
> |
public void run() { |
443 |
> |
lock.readLock().lock(); |
444 |
> |
lock.readLock().unlock(); |
445 |
> |
} |
446 |
> |
}); |
447 |
> |
|
448 |
> |
try { |
449 |
> |
t1.start(); |
450 |
> |
t2.start(); |
451 |
> |
lock.readLock().lock(); |
452 |
> |
lock.readLock().unlock(); |
453 |
> |
Thread.sleep(SHORT_DELAY_MS); |
454 |
> |
lock.readLock().lock(); |
455 |
> |
lock.readLock().unlock(); |
456 |
> |
lock.writeLock().unlock(); |
457 |
> |
t1.join(MEDIUM_DELAY_MS); |
458 |
> |
t2.join(MEDIUM_DELAY_MS); |
459 |
> |
assertTrue(!t1.isAlive()); |
460 |
> |
assertTrue(!t2.isAlive()); |
461 |
> |
|
462 |
> |
} catch(Exception e){ |
463 |
> |
unexpectedException(); |
464 |
> |
} |
465 |
> |
} |
466 |
> |
|
467 |
> |
/** |
468 |
> |
* Read lock succeeds if write locked by current thread even if |
469 |
> |
* other threads are waiting for writelock |
470 |
> |
*/ |
471 |
> |
public void testReadHoldingWriteLock3() { |
472 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
473 |
> |
lock.writeLock().lock(); |
474 |
> |
Thread t1 = new Thread(new Runnable() { |
475 |
> |
public void run() { |
476 |
> |
lock.writeLock().lock(); |
477 |
> |
lock.writeLock().unlock(); |
478 |
> |
} |
479 |
> |
}); |
480 |
> |
Thread t2 = new Thread(new Runnable() { |
481 |
> |
public void run() { |
482 |
> |
lock.writeLock().lock(); |
483 |
> |
lock.writeLock().unlock(); |
484 |
> |
} |
485 |
> |
}); |
486 |
> |
|
487 |
> |
try { |
488 |
> |
t1.start(); |
489 |
> |
t2.start(); |
490 |
> |
lock.readLock().lock(); |
491 |
> |
lock.readLock().unlock(); |
492 |
> |
Thread.sleep(SHORT_DELAY_MS); |
493 |
> |
lock.readLock().lock(); |
494 |
> |
lock.readLock().unlock(); |
495 |
> |
lock.writeLock().unlock(); |
496 |
> |
t1.join(MEDIUM_DELAY_MS); |
497 |
> |
t2.join(MEDIUM_DELAY_MS); |
498 |
> |
assertTrue(!t1.isAlive()); |
499 |
> |
assertTrue(!t2.isAlive()); |
500 |
> |
|
501 |
> |
} catch(Exception e){ |
502 |
> |
unexpectedException(); |
503 |
> |
} |
504 |
> |
} |
505 |
> |
|
506 |
> |
|
507 |
> |
/** |
508 |
> |
* Write lock succeeds if write locked by current thread even if |
509 |
> |
* other threads are waiting for writelock |
510 |
> |
*/ |
511 |
> |
public void testWriteHoldingWriteLock4() { |
512 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
513 |
> |
lock.writeLock().lock(); |
514 |
> |
Thread t1 = new Thread(new Runnable() { |
515 |
> |
public void run() { |
516 |
> |
lock.writeLock().lock(); |
517 |
> |
lock.writeLock().unlock(); |
518 |
> |
} |
519 |
> |
}); |
520 |
> |
Thread t2 = new Thread(new Runnable() { |
521 |
> |
public void run() { |
522 |
> |
lock.writeLock().lock(); |
523 |
> |
lock.writeLock().unlock(); |
524 |
|
} |
525 |
|
}); |
526 |
< |
t.start(); |
527 |
< |
t.interrupt(); |
526 |
> |
|
527 |
> |
try { |
528 |
> |
t1.start(); |
529 |
> |
t2.start(); |
530 |
> |
lock.writeLock().lock(); |
531 |
> |
lock.writeLock().unlock(); |
532 |
> |
Thread.sleep(SHORT_DELAY_MS); |
533 |
> |
lock.writeLock().lock(); |
534 |
> |
lock.writeLock().unlock(); |
535 |
> |
lock.writeLock().unlock(); |
536 |
> |
t1.join(MEDIUM_DELAY_MS); |
537 |
> |
t2.join(MEDIUM_DELAY_MS); |
538 |
> |
assertTrue(!t1.isAlive()); |
539 |
> |
assertTrue(!t2.isAlive()); |
540 |
> |
|
541 |
> |
} catch(Exception e){ |
542 |
> |
unexpectedException(); |
543 |
> |
} |
544 |
|
} |
545 |
|
|
87 |
– |
|
546 |
|
|
547 |
< |
/* |
548 |
< |
* current thread locks interruptibly the thread |
549 |
< |
* another thread tries to aquire the lock and blocks |
550 |
< |
* on the call. interrupt the attempted aquireLock |
551 |
< |
* assert that the first lock() call actually locked the lock |
552 |
< |
* assert that the current thread is the one holding the lock |
547 |
> |
/** |
548 |
> |
* Fair Read trylock succeeds if write locked by current thread |
549 |
> |
*/ |
550 |
> |
public void testReadHoldingWriteLockFair() { |
551 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
552 |
> |
lock.writeLock().lock(); |
553 |
> |
assertTrue(lock.readLock().tryLock()); |
554 |
> |
lock.readLock().unlock(); |
555 |
> |
lock.writeLock().unlock(); |
556 |
> |
} |
557 |
> |
|
558 |
> |
/** |
559 |
> |
* Fair Read lock succeeds if write locked by current thread even if |
560 |
> |
* other threads are waiting for readlock |
561 |
|
*/ |
562 |
+ |
public void testReadHoldingWriteLockFair2() { |
563 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
564 |
+ |
lock.writeLock().lock(); |
565 |
+ |
Thread t1 = new Thread(new Runnable() { |
566 |
+ |
public void run() { |
567 |
+ |
lock.readLock().lock(); |
568 |
+ |
lock.readLock().unlock(); |
569 |
+ |
} |
570 |
+ |
}); |
571 |
+ |
Thread t2 = new Thread(new Runnable() { |
572 |
+ |
public void run() { |
573 |
+ |
lock.readLock().lock(); |
574 |
+ |
lock.readLock().unlock(); |
575 |
+ |
} |
576 |
+ |
}); |
577 |
+ |
|
578 |
+ |
try { |
579 |
+ |
t1.start(); |
580 |
+ |
t2.start(); |
581 |
+ |
lock.readLock().lock(); |
582 |
+ |
lock.readLock().unlock(); |
583 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
584 |
+ |
lock.readLock().lock(); |
585 |
+ |
lock.readLock().unlock(); |
586 |
+ |
lock.writeLock().unlock(); |
587 |
+ |
t1.join(MEDIUM_DELAY_MS); |
588 |
+ |
t2.join(MEDIUM_DELAY_MS); |
589 |
+ |
assertTrue(!t1.isAlive()); |
590 |
+ |
assertTrue(!t2.isAlive()); |
591 |
+ |
|
592 |
+ |
} catch(Exception e){ |
593 |
+ |
unexpectedException(); |
594 |
+ |
} |
595 |
+ |
} |
596 |
+ |
|
597 |
+ |
|
598 |
+ |
/** |
599 |
+ |
* Fair Read lock succeeds if write locked by current thread even if |
600 |
+ |
* other threads are waiting for writelock |
601 |
+ |
*/ |
602 |
+ |
public void testReadHoldingWriteLockFair3() { |
603 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
604 |
+ |
lock.writeLock().lock(); |
605 |
+ |
Thread t1 = new Thread(new Runnable() { |
606 |
+ |
public void run() { |
607 |
+ |
lock.writeLock().lock(); |
608 |
+ |
lock.writeLock().unlock(); |
609 |
+ |
} |
610 |
+ |
}); |
611 |
+ |
Thread t2 = new Thread(new Runnable() { |
612 |
+ |
public void run() { |
613 |
+ |
lock.writeLock().lock(); |
614 |
+ |
lock.writeLock().unlock(); |
615 |
+ |
} |
616 |
+ |
}); |
617 |
+ |
|
618 |
+ |
try { |
619 |
+ |
t1.start(); |
620 |
+ |
t2.start(); |
621 |
+ |
lock.readLock().lock(); |
622 |
+ |
lock.readLock().unlock(); |
623 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
624 |
+ |
lock.readLock().lock(); |
625 |
+ |
lock.readLock().unlock(); |
626 |
+ |
lock.writeLock().unlock(); |
627 |
+ |
t1.join(MEDIUM_DELAY_MS); |
628 |
+ |
t2.join(MEDIUM_DELAY_MS); |
629 |
+ |
assertTrue(!t1.isAlive()); |
630 |
+ |
assertTrue(!t2.isAlive()); |
631 |
+ |
|
632 |
+ |
} catch(Exception e){ |
633 |
+ |
unexpectedException(); |
634 |
+ |
} |
635 |
+ |
} |
636 |
+ |
|
637 |
+ |
|
638 |
+ |
/** |
639 |
+ |
* Fair Write lock succeeds if write locked by current thread even if |
640 |
+ |
* other threads are waiting for writelock |
641 |
+ |
*/ |
642 |
+ |
public void testWriteHoldingWriteLockFair4() { |
643 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
644 |
+ |
lock.writeLock().lock(); |
645 |
+ |
Thread t1 = new Thread(new Runnable() { |
646 |
+ |
public void run() { |
647 |
+ |
lock.writeLock().lock(); |
648 |
+ |
lock.writeLock().unlock(); |
649 |
+ |
} |
650 |
+ |
}); |
651 |
+ |
Thread t2 = new Thread(new Runnable() { |
652 |
+ |
public void run() { |
653 |
+ |
lock.writeLock().lock(); |
654 |
+ |
lock.writeLock().unlock(); |
655 |
+ |
} |
656 |
+ |
}); |
657 |
|
|
658 |
< |
public void testLockedInterruptibly() { |
659 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
660 |
< |
try {lock.writeLock().lockInterruptibly();} catch(Exception e) {} |
661 |
< |
Thread t = new Thread(new Runnable() { |
658 |
> |
try { |
659 |
> |
t1.start(); |
660 |
> |
t2.start(); |
661 |
> |
Thread.sleep(SHORT_DELAY_MS); |
662 |
> |
assertTrue(lock.isWriteLockedByCurrentThread()); |
663 |
> |
assertTrue(lock.getWriteHoldCount() == 1); |
664 |
> |
lock.writeLock().lock(); |
665 |
> |
assertTrue(lock.getWriteHoldCount() == 2); |
666 |
> |
lock.writeLock().unlock(); |
667 |
> |
lock.writeLock().lock(); |
668 |
> |
lock.writeLock().unlock(); |
669 |
> |
lock.writeLock().unlock(); |
670 |
> |
t1.join(MEDIUM_DELAY_MS); |
671 |
> |
t2.join(MEDIUM_DELAY_MS); |
672 |
> |
assertTrue(!t1.isAlive()); |
673 |
> |
assertTrue(!t2.isAlive()); |
674 |
> |
|
675 |
> |
} catch(Exception e){ |
676 |
> |
unexpectedException(); |
677 |
> |
} |
678 |
> |
} |
679 |
> |
|
680 |
> |
|
681 |
> |
/** |
682 |
> |
* Read tryLock succeeds if readlocked but not writelocked |
683 |
> |
*/ |
684 |
> |
public void testTryLockWhenReadLocked() { |
685 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
686 |
> |
lock.readLock().lock(); |
687 |
> |
Thread t = new Thread(new Runnable() { |
688 |
> |
public void run() { |
689 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
690 |
> |
lock.readLock().unlock(); |
691 |
> |
} |
692 |
> |
}); |
693 |
> |
try { |
694 |
> |
t.start(); |
695 |
> |
t.join(); |
696 |
> |
lock.readLock().unlock(); |
697 |
> |
} catch(Exception e){ |
698 |
> |
unexpectedException(); |
699 |
> |
} |
700 |
> |
} |
701 |
> |
|
702 |
> |
|
703 |
> |
|
704 |
> |
/** |
705 |
> |
* write tryLock fails when readlocked |
706 |
> |
*/ |
707 |
> |
public void testWriteTryLockWhenReadLocked() { |
708 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
709 |
> |
lock.readLock().lock(); |
710 |
> |
Thread t = new Thread(new Runnable() { |
711 |
> |
public void run() { |
712 |
> |
threadAssertFalse(lock.writeLock().tryLock()); |
713 |
> |
} |
714 |
> |
}); |
715 |
> |
try { |
716 |
> |
t.start(); |
717 |
> |
t.join(); |
718 |
> |
lock.readLock().unlock(); |
719 |
> |
} catch(Exception e){ |
720 |
> |
unexpectedException(); |
721 |
> |
} |
722 |
> |
} |
723 |
> |
|
724 |
> |
|
725 |
> |
/** |
726 |
> |
* Fair Read tryLock succeeds if readlocked but not writelocked |
727 |
> |
*/ |
728 |
> |
public void testTryLockWhenReadLockedFair() { |
729 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
730 |
> |
lock.readLock().lock(); |
731 |
> |
Thread t = new Thread(new Runnable() { |
732 |
> |
public void run() { |
733 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
734 |
> |
lock.readLock().unlock(); |
735 |
> |
} |
736 |
> |
}); |
737 |
> |
try { |
738 |
> |
t.start(); |
739 |
> |
t.join(); |
740 |
> |
lock.readLock().unlock(); |
741 |
> |
} catch(Exception e){ |
742 |
> |
unexpectedException(); |
743 |
> |
} |
744 |
> |
} |
745 |
> |
|
746 |
> |
|
747 |
> |
|
748 |
> |
/** |
749 |
> |
* Fair write tryLock fails when readlocked |
750 |
> |
*/ |
751 |
> |
public void testWriteTryLockWhenReadLockedFair() { |
752 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
753 |
> |
lock.readLock().lock(); |
754 |
> |
Thread t = new Thread(new Runnable() { |
755 |
> |
public void run() { |
756 |
> |
threadAssertFalse(lock.writeLock().tryLock()); |
757 |
> |
} |
758 |
> |
}); |
759 |
> |
try { |
760 |
> |
t.start(); |
761 |
> |
t.join(); |
762 |
> |
lock.readLock().unlock(); |
763 |
> |
} catch(Exception e){ |
764 |
> |
unexpectedException(); |
765 |
> |
} |
766 |
> |
} |
767 |
> |
|
768 |
> |
|
769 |
> |
|
770 |
> |
/** |
771 |
> |
* write timed tryLock times out if locked |
772 |
> |
*/ |
773 |
> |
public void testWriteTryLock_Timeout() { |
774 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
775 |
> |
lock.writeLock().lock(); |
776 |
> |
Thread t = new Thread(new Runnable() { |
777 |
> |
public void run() { |
778 |
> |
try { |
779 |
> |
threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS)); |
780 |
> |
} catch (Exception ex) { |
781 |
> |
threadUnexpectedException(); |
782 |
> |
} |
783 |
> |
} |
784 |
> |
}); |
785 |
> |
try { |
786 |
> |
t.start(); |
787 |
> |
t.join(); |
788 |
> |
lock.writeLock().unlock(); |
789 |
> |
} catch(Exception e){ |
790 |
> |
unexpectedException(); |
791 |
> |
} |
792 |
> |
} |
793 |
> |
|
794 |
> |
/** |
795 |
> |
* read timed tryLock times out if write-locked |
796 |
> |
*/ |
797 |
> |
public void testReadTryLock_Timeout() { |
798 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
799 |
> |
lock.writeLock().lock(); |
800 |
> |
Thread t = new Thread(new Runnable() { |
801 |
> |
public void run() { |
802 |
> |
try { |
803 |
> |
threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS)); |
804 |
> |
} catch (Exception ex) { |
805 |
> |
threadUnexpectedException(); |
806 |
> |
} |
807 |
> |
} |
808 |
> |
}); |
809 |
> |
try { |
810 |
> |
t.start(); |
811 |
> |
t.join(); |
812 |
> |
lock.writeLock().unlock(); |
813 |
> |
} catch(Exception e){ |
814 |
> |
unexpectedException(); |
815 |
> |
} |
816 |
> |
} |
817 |
> |
|
818 |
> |
|
819 |
> |
/** |
820 |
> |
* write lockInterruptibly succeeds if lock free else is interruptible |
821 |
> |
*/ |
822 |
> |
public void testWriteLockInterruptibly() { |
823 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
824 |
> |
try { |
825 |
> |
lock.writeLock().lockInterruptibly(); |
826 |
> |
} catch(Exception e) { |
827 |
> |
unexpectedException(); |
828 |
> |
} |
829 |
> |
Thread t = new Thread(new Runnable() { |
830 |
|
public void run() { |
831 |
|
try { |
832 |
|
lock.writeLock().lockInterruptibly(); |
833 |
< |
fail("Failed to generate an Interrupted Exception"); |
833 |
> |
threadShouldThrow(); |
834 |
> |
} |
835 |
> |
catch(InterruptedException success) { |
836 |
> |
} |
837 |
> |
} |
838 |
> |
}); |
839 |
> |
try { |
840 |
> |
t.start(); |
841 |
> |
Thread.sleep(SHORT_DELAY_MS); |
842 |
> |
t.interrupt(); |
843 |
> |
Thread.sleep(SHORT_DELAY_MS); |
844 |
> |
t.join(); |
845 |
> |
lock.writeLock().unlock(); |
846 |
> |
} catch(Exception e){ |
847 |
> |
unexpectedException(); |
848 |
> |
} |
849 |
> |
} |
850 |
> |
|
851 |
> |
/** |
852 |
> |
* read lockInterruptibly succeeds if lock free else is interruptible |
853 |
> |
*/ |
854 |
> |
public void testReadLockInterruptibly() { |
855 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
856 |
> |
try { |
857 |
> |
lock.writeLock().lockInterruptibly(); |
858 |
> |
} catch(Exception e) { |
859 |
> |
unexpectedException(); |
860 |
> |
} |
861 |
> |
Thread t = new Thread(new Runnable() { |
862 |
> |
public void run() { |
863 |
> |
try { |
864 |
> |
lock.readLock().lockInterruptibly(); |
865 |
> |
threadShouldThrow(); |
866 |
> |
} |
867 |
> |
catch(InterruptedException success) { |
868 |
> |
} |
869 |
> |
} |
870 |
> |
}); |
871 |
> |
try { |
872 |
> |
t.start(); |
873 |
> |
Thread.sleep(SHORT_DELAY_MS); |
874 |
> |
t.interrupt(); |
875 |
> |
t.join(); |
876 |
> |
lock.writeLock().unlock(); |
877 |
> |
} catch(Exception e){ |
878 |
> |
unexpectedException(); |
879 |
> |
} |
880 |
> |
} |
881 |
> |
|
882 |
> |
/** |
883 |
> |
* Calling await without holding lock throws IllegalMonitorStateException |
884 |
> |
*/ |
885 |
> |
public void testAwait_IllegalMonitor() { |
886 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
887 |
> |
final Condition c = lock.writeLock().newCondition(); |
888 |
> |
try { |
889 |
> |
c.await(); |
890 |
> |
shouldThrow(); |
891 |
> |
} |
892 |
> |
catch (IllegalMonitorStateException success) { |
893 |
> |
} |
894 |
> |
catch (Exception ex) { |
895 |
> |
shouldThrow(); |
896 |
> |
} |
897 |
> |
} |
898 |
> |
|
899 |
> |
/** |
900 |
> |
* Calling signal without holding lock throws IllegalMonitorStateException |
901 |
> |
*/ |
902 |
> |
public void testSignal_IllegalMonitor() { |
903 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
904 |
> |
final Condition c = lock.writeLock().newCondition(); |
905 |
> |
try { |
906 |
> |
c.signal(); |
907 |
> |
shouldThrow(); |
908 |
> |
} |
909 |
> |
catch (IllegalMonitorStateException success) { |
910 |
> |
} |
911 |
> |
catch (Exception ex) { |
912 |
> |
unexpectedException(); |
913 |
> |
} |
914 |
> |
} |
915 |
> |
|
916 |
> |
/** |
917 |
> |
* awaitNanos without a signal times out |
918 |
> |
*/ |
919 |
> |
public void testAwaitNanos_Timeout() { |
920 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
921 |
> |
final Condition c = lock.writeLock().newCondition(); |
922 |
> |
try { |
923 |
> |
lock.writeLock().lock(); |
924 |
> |
long t = c.awaitNanos(100); |
925 |
> |
assertTrue(t <= 0); |
926 |
> |
lock.writeLock().unlock(); |
927 |
> |
} |
928 |
> |
catch (Exception ex) { |
929 |
> |
unexpectedException(); |
930 |
> |
} |
931 |
> |
} |
932 |
> |
|
933 |
> |
|
934 |
> |
/** |
935 |
> |
* timed await without a signal times out |
936 |
> |
*/ |
937 |
> |
public void testAwait_Timeout() { |
938 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
939 |
> |
final Condition c = lock.writeLock().newCondition(); |
940 |
> |
try { |
941 |
> |
lock.writeLock().lock(); |
942 |
> |
lock.writeLock().unlock(); |
943 |
> |
} |
944 |
> |
catch (Exception ex) { |
945 |
> |
unexpectedException(); |
946 |
> |
} |
947 |
> |
} |
948 |
> |
|
949 |
> |
/** |
950 |
> |
* awaitUntil without a signal times out |
951 |
> |
*/ |
952 |
> |
public void testAwaitUntil_Timeout() { |
953 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
954 |
> |
final Condition c = lock.writeLock().newCondition(); |
955 |
> |
try { |
956 |
> |
lock.writeLock().lock(); |
957 |
> |
java.util.Date d = new java.util.Date(); |
958 |
> |
lock.writeLock().unlock(); |
959 |
> |
} |
960 |
> |
catch (Exception ex) { |
961 |
> |
unexpectedException(); |
962 |
> |
} |
963 |
> |
} |
964 |
> |
|
965 |
> |
/** |
966 |
> |
* await returns when signalled |
967 |
> |
*/ |
968 |
> |
public void testAwait() { |
969 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
970 |
> |
final Condition c = lock.writeLock().newCondition(); |
971 |
> |
Thread t = new Thread(new Runnable() { |
972 |
> |
public void run() { |
973 |
> |
try { |
974 |
> |
lock.writeLock().lock(); |
975 |
> |
c.await(); |
976 |
> |
lock.writeLock().unlock(); |
977 |
> |
} |
978 |
> |
catch(InterruptedException e) { |
979 |
> |
threadUnexpectedException(); |
980 |
> |
} |
981 |
> |
} |
982 |
> |
}); |
983 |
> |
|
984 |
> |
try { |
985 |
> |
t.start(); |
986 |
> |
Thread.sleep(SHORT_DELAY_MS); |
987 |
> |
lock.writeLock().lock(); |
988 |
> |
c.signal(); |
989 |
> |
lock.writeLock().unlock(); |
990 |
> |
t.join(SHORT_DELAY_MS); |
991 |
> |
assertFalse(t.isAlive()); |
992 |
> |
} |
993 |
> |
catch (Exception ex) { |
994 |
> |
unexpectedException(); |
995 |
> |
} |
996 |
> |
} |
997 |
> |
|
998 |
> |
/** A helper class for uninterruptible wait tests */ |
999 |
> |
class UninterruptableThread extends Thread { |
1000 |
> |
private Lock lock; |
1001 |
> |
private Condition c; |
1002 |
> |
|
1003 |
> |
public volatile boolean canAwake = false; |
1004 |
> |
public volatile boolean interrupted = false; |
1005 |
> |
public volatile boolean lockStarted = false; |
1006 |
> |
|
1007 |
> |
public UninterruptableThread(Lock lock, Condition c) { |
1008 |
> |
this.lock = lock; |
1009 |
> |
this.c = c; |
1010 |
> |
} |
1011 |
> |
|
1012 |
> |
public synchronized void run() { |
1013 |
> |
lock.lock(); |
1014 |
> |
lockStarted = true; |
1015 |
> |
|
1016 |
> |
while (!canAwake) { |
1017 |
> |
c.awaitUninterruptibly(); |
1018 |
> |
} |
1019 |
> |
|
1020 |
> |
interrupted = isInterrupted(); |
1021 |
> |
lock.unlock(); |
1022 |
> |
} |
1023 |
> |
} |
1024 |
> |
|
1025 |
> |
/** |
1026 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
1027 |
> |
*/ |
1028 |
> |
public void testAwaitUninterruptibly() { |
1029 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1030 |
> |
final Condition c = lock.writeLock().newCondition(); |
1031 |
> |
UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c); |
1032 |
> |
|
1033 |
> |
try { |
1034 |
> |
thread.start(); |
1035 |
> |
|
1036 |
> |
while (!thread.lockStarted) { |
1037 |
> |
Thread.sleep(100); |
1038 |
> |
} |
1039 |
> |
|
1040 |
> |
lock.writeLock().lock(); |
1041 |
> |
try { |
1042 |
> |
thread.interrupt(); |
1043 |
> |
thread.canAwake = true; |
1044 |
> |
c.signal(); |
1045 |
> |
} finally { |
1046 |
> |
lock.writeLock().unlock(); |
1047 |
> |
} |
1048 |
> |
|
1049 |
> |
thread.join(); |
1050 |
> |
assertTrue(thread.interrupted); |
1051 |
> |
assertFalse(thread.isAlive()); |
1052 |
> |
} catch (Exception ex) { |
1053 |
> |
unexpectedException(); |
1054 |
> |
} |
1055 |
> |
} |
1056 |
> |
|
1057 |
> |
/** |
1058 |
> |
* await is interruptible |
1059 |
> |
*/ |
1060 |
> |
public void testAwait_Interrupt() { |
1061 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1062 |
> |
final Condition c = lock.writeLock().newCondition(); |
1063 |
> |
Thread t = new Thread(new Runnable() { |
1064 |
> |
public void run() { |
1065 |
> |
try { |
1066 |
> |
lock.writeLock().lock(); |
1067 |
> |
c.await(); |
1068 |
> |
lock.writeLock().unlock(); |
1069 |
> |
threadShouldThrow(); |
1070 |
> |
} |
1071 |
> |
catch(InterruptedException success) { |
1072 |
> |
} |
1073 |
> |
} |
1074 |
> |
}); |
1075 |
> |
|
1076 |
> |
try { |
1077 |
> |
t.start(); |
1078 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1079 |
> |
t.interrupt(); |
1080 |
> |
t.join(SHORT_DELAY_MS); |
1081 |
> |
assertFalse(t.isAlive()); |
1082 |
> |
} |
1083 |
> |
catch (Exception ex) { |
1084 |
> |
unexpectedException(); |
1085 |
> |
} |
1086 |
> |
} |
1087 |
> |
|
1088 |
> |
/** |
1089 |
> |
* awaitNanos is interruptible |
1090 |
> |
*/ |
1091 |
> |
public void testAwaitNanos_Interrupt() { |
1092 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1093 |
> |
final Condition c = lock.writeLock().newCondition(); |
1094 |
> |
Thread t = new Thread(new Runnable() { |
1095 |
> |
public void run() { |
1096 |
> |
try { |
1097 |
> |
lock.writeLock().lock(); |
1098 |
> |
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
1099 |
> |
lock.writeLock().unlock(); |
1100 |
> |
threadShouldThrow(); |
1101 |
> |
} |
1102 |
> |
catch(InterruptedException success) { |
1103 |
> |
} |
1104 |
> |
} |
1105 |
> |
}); |
1106 |
> |
|
1107 |
> |
try { |
1108 |
> |
t.start(); |
1109 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1110 |
> |
t.interrupt(); |
1111 |
> |
t.join(SHORT_DELAY_MS); |
1112 |
> |
assertFalse(t.isAlive()); |
1113 |
> |
} |
1114 |
> |
catch (Exception ex) { |
1115 |
> |
unexpectedException(); |
1116 |
> |
} |
1117 |
> |
} |
1118 |
> |
|
1119 |
> |
/** |
1120 |
> |
* awaitUntil is interruptible |
1121 |
> |
*/ |
1122 |
> |
public void testAwaitUntil_Interrupt() { |
1123 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1124 |
> |
final Condition c = lock.writeLock().newCondition(); |
1125 |
> |
Thread t = new Thread(new Runnable() { |
1126 |
> |
public void run() { |
1127 |
> |
try { |
1128 |
> |
lock.writeLock().lock(); |
1129 |
> |
java.util.Date d = new java.util.Date(); |
1130 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
1131 |
> |
lock.writeLock().unlock(); |
1132 |
> |
threadShouldThrow(); |
1133 |
> |
} |
1134 |
> |
catch(InterruptedException success) { |
1135 |
> |
} |
1136 |
> |
} |
1137 |
> |
}); |
1138 |
> |
|
1139 |
> |
try { |
1140 |
> |
t.start(); |
1141 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1142 |
> |
t.interrupt(); |
1143 |
> |
t.join(SHORT_DELAY_MS); |
1144 |
> |
assertFalse(t.isAlive()); |
1145 |
> |
} |
1146 |
> |
catch (Exception ex) { |
1147 |
> |
unexpectedException(); |
1148 |
> |
} |
1149 |
> |
} |
1150 |
> |
|
1151 |
> |
/** |
1152 |
> |
* signalAll wakes up all threads |
1153 |
> |
*/ |
1154 |
> |
public void testSignalAll() { |
1155 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1156 |
> |
final Condition c = lock.writeLock().newCondition(); |
1157 |
> |
Thread t1 = new Thread(new Runnable() { |
1158 |
> |
public void run() { |
1159 |
> |
try { |
1160 |
> |
lock.writeLock().lock(); |
1161 |
> |
c.await(); |
1162 |
> |
lock.writeLock().unlock(); |
1163 |
> |
} |
1164 |
> |
catch(InterruptedException e) { |
1165 |
> |
threadUnexpectedException(); |
1166 |
> |
} |
1167 |
> |
} |
1168 |
> |
}); |
1169 |
> |
|
1170 |
> |
Thread t2 = new Thread(new Runnable() { |
1171 |
> |
public void run() { |
1172 |
> |
try { |
1173 |
> |
lock.writeLock().lock(); |
1174 |
> |
c.await(); |
1175 |
> |
lock.writeLock().unlock(); |
1176 |
|
} |
1177 |
< |
catch(InterruptedException e) {} |
1177 |
> |
catch(InterruptedException e) { |
1178 |
> |
threadUnexpectedException(); |
1179 |
> |
} |
1180 |
|
} |
1181 |
|
}); |
1182 |
< |
t.start(); |
1183 |
< |
t.interrupt(); |
1182 |
> |
|
1183 |
> |
try { |
1184 |
> |
t1.start(); |
1185 |
> |
t2.start(); |
1186 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1187 |
> |
lock.writeLock().lock(); |
1188 |
> |
c.signalAll(); |
1189 |
> |
lock.writeLock().unlock(); |
1190 |
> |
t1.join(SHORT_DELAY_MS); |
1191 |
> |
t2.join(SHORT_DELAY_MS); |
1192 |
> |
assertFalse(t1.isAlive()); |
1193 |
> |
assertFalse(t2.isAlive()); |
1194 |
> |
} |
1195 |
> |
catch (Exception ex) { |
1196 |
> |
unexpectedException(); |
1197 |
> |
} |
1198 |
> |
} |
1199 |
> |
|
1200 |
> |
/** |
1201 |
> |
* A serialized lock deserializes as unlocked |
1202 |
> |
*/ |
1203 |
> |
public void testSerialization() { |
1204 |
> |
ReentrantReadWriteLock l = new ReentrantReadWriteLock(); |
1205 |
> |
l.readLock().lock(); |
1206 |
> |
l.readLock().unlock(); |
1207 |
> |
|
1208 |
> |
try { |
1209 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
1210 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
1211 |
> |
out.writeObject(l); |
1212 |
> |
out.close(); |
1213 |
> |
|
1214 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
1215 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
1216 |
> |
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
1217 |
> |
r.readLock().lock(); |
1218 |
> |
r.readLock().unlock(); |
1219 |
> |
} catch(Exception e){ |
1220 |
> |
e.printStackTrace(); |
1221 |
> |
unexpectedException(); |
1222 |
> |
} |
1223 |
> |
} |
1224 |
> |
|
1225 |
> |
/** |
1226 |
> |
* hasQueuedThreads reports whether there are waiting threads |
1227 |
> |
*/ |
1228 |
> |
public void testhasQueuedThreads() { |
1229 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1230 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1231 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1232 |
> |
try { |
1233 |
> |
assertFalse(lock.hasQueuedThreads()); |
1234 |
> |
lock.writeLock().lock(); |
1235 |
> |
t1.start(); |
1236 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1237 |
> |
assertTrue(lock.hasQueuedThreads()); |
1238 |
> |
t2.start(); |
1239 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1240 |
> |
assertTrue(lock.hasQueuedThreads()); |
1241 |
> |
t1.interrupt(); |
1242 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1243 |
> |
assertTrue(lock.hasQueuedThreads()); |
1244 |
> |
lock.writeLock().unlock(); |
1245 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1246 |
> |
assertFalse(lock.hasQueuedThreads()); |
1247 |
> |
t1.join(); |
1248 |
> |
t2.join(); |
1249 |
> |
} catch(Exception e){ |
1250 |
> |
unexpectedException(); |
1251 |
> |
} |
1252 |
> |
} |
1253 |
> |
|
1254 |
> |
/** |
1255 |
> |
* hasQueuedThread(null) throws NPE |
1256 |
> |
*/ |
1257 |
> |
public void testHasQueuedThreadNPE() { |
1258 |
> |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
1259 |
> |
try { |
1260 |
> |
sync.hasQueuedThread(null); |
1261 |
> |
shouldThrow(); |
1262 |
> |
} catch (NullPointerException success) { |
1263 |
> |
} |
1264 |
> |
} |
1265 |
> |
|
1266 |
> |
/** |
1267 |
> |
* hasQueuedThread reports whether a thread is queued. |
1268 |
> |
*/ |
1269 |
> |
public void testHasQueuedThread() { |
1270 |
> |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
1271 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
1272 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
1273 |
> |
try { |
1274 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
1275 |
> |
assertFalse(sync.hasQueuedThread(t2)); |
1276 |
> |
sync.writeLock().lock(); |
1277 |
> |
t1.start(); |
1278 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1279 |
> |
assertTrue(sync.hasQueuedThread(t1)); |
1280 |
> |
t2.start(); |
1281 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1282 |
> |
assertTrue(sync.hasQueuedThread(t1)); |
1283 |
> |
assertTrue(sync.hasQueuedThread(t2)); |
1284 |
> |
t1.interrupt(); |
1285 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1286 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
1287 |
> |
assertTrue(sync.hasQueuedThread(t2)); |
1288 |
> |
sync.writeLock().unlock(); |
1289 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1290 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
1291 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1292 |
> |
assertFalse(sync.hasQueuedThread(t2)); |
1293 |
> |
t1.join(); |
1294 |
> |
t2.join(); |
1295 |
> |
} catch(Exception e){ |
1296 |
> |
unexpectedException(); |
1297 |
> |
} |
1298 |
> |
} |
1299 |
> |
|
1300 |
> |
|
1301 |
> |
/** |
1302 |
> |
* getQueueLength reports number of waiting threads |
1303 |
> |
*/ |
1304 |
> |
public void testGetQueueLength() { |
1305 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1306 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1307 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1308 |
> |
try { |
1309 |
> |
assertEquals(0, lock.getQueueLength()); |
1310 |
> |
lock.writeLock().lock(); |
1311 |
> |
t1.start(); |
1312 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1313 |
> |
assertEquals(1, lock.getQueueLength()); |
1314 |
> |
t2.start(); |
1315 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1316 |
> |
assertEquals(2, lock.getQueueLength()); |
1317 |
> |
t1.interrupt(); |
1318 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1319 |
> |
assertEquals(1, lock.getQueueLength()); |
1320 |
> |
lock.writeLock().unlock(); |
1321 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1322 |
> |
assertEquals(0, lock.getQueueLength()); |
1323 |
> |
t1.join(); |
1324 |
> |
t2.join(); |
1325 |
> |
} catch(Exception e){ |
1326 |
> |
unexpectedException(); |
1327 |
> |
} |
1328 |
> |
} |
1329 |
> |
|
1330 |
> |
/** |
1331 |
> |
* getQueuedThreads includes waiting threads |
1332 |
> |
*/ |
1333 |
> |
public void testGetQueuedThreads() { |
1334 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1335 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1336 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1337 |
> |
try { |
1338 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1339 |
> |
lock.writeLock().lock(); |
1340 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1341 |
> |
t1.start(); |
1342 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1343 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1344 |
> |
t2.start(); |
1345 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1346 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1347 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1348 |
> |
t1.interrupt(); |
1349 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1350 |
> |
assertFalse(lock.getQueuedThreads().contains(t1)); |
1351 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1352 |
> |
lock.writeLock().unlock(); |
1353 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1354 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1355 |
> |
t1.join(); |
1356 |
> |
t2.join(); |
1357 |
> |
} catch(Exception e){ |
1358 |
> |
unexpectedException(); |
1359 |
> |
} |
1360 |
> |
} |
1361 |
> |
|
1362 |
> |
/** |
1363 |
> |
* hasWaiters throws NPE if null |
1364 |
> |
*/ |
1365 |
> |
public void testHasWaitersNPE() { |
1366 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1367 |
> |
try { |
1368 |
> |
lock.hasWaiters(null); |
1369 |
> |
shouldThrow(); |
1370 |
> |
} catch (NullPointerException success) { |
1371 |
> |
} catch (Exception ex) { |
1372 |
> |
unexpectedException(); |
1373 |
> |
} |
1374 |
> |
} |
1375 |
> |
|
1376 |
> |
/** |
1377 |
> |
* getWaitQueueLength throws NPE if null |
1378 |
> |
*/ |
1379 |
> |
public void testGetWaitQueueLengthNPE() { |
1380 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1381 |
> |
try { |
1382 |
> |
lock.getWaitQueueLength(null); |
1383 |
> |
shouldThrow(); |
1384 |
> |
} catch (NullPointerException success) { |
1385 |
> |
} catch (Exception ex) { |
1386 |
> |
unexpectedException(); |
1387 |
> |
} |
1388 |
> |
} |
1389 |
> |
|
1390 |
> |
|
1391 |
> |
/** |
1392 |
> |
* getWaitingThreads throws NPE if null |
1393 |
> |
*/ |
1394 |
> |
public void testGetWaitingThreadsNPE() { |
1395 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1396 |
> |
try { |
1397 |
> |
lock.getWaitingThreads(null); |
1398 |
> |
shouldThrow(); |
1399 |
> |
} catch (NullPointerException success) { |
1400 |
> |
} catch (Exception ex) { |
1401 |
> |
unexpectedException(); |
1402 |
> |
} |
1403 |
> |
} |
1404 |
> |
|
1405 |
> |
/** |
1406 |
> |
* hasWaiters throws IAE if not owned |
1407 |
> |
*/ |
1408 |
> |
public void testHasWaitersIAE() { |
1409 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1410 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1411 |
> |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1412 |
> |
try { |
1413 |
> |
lock2.hasWaiters(c); |
1414 |
> |
shouldThrow(); |
1415 |
> |
} catch (IllegalArgumentException success) { |
1416 |
> |
} catch (Exception ex) { |
1417 |
> |
unexpectedException(); |
1418 |
> |
} |
1419 |
> |
} |
1420 |
> |
|
1421 |
> |
/** |
1422 |
> |
* hasWaiters throws IMSE if not locked |
1423 |
> |
*/ |
1424 |
> |
public void testHasWaitersIMSE() { |
1425 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1426 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1427 |
> |
try { |
1428 |
> |
lock.hasWaiters(c); |
1429 |
> |
shouldThrow(); |
1430 |
> |
} catch (IllegalMonitorStateException success) { |
1431 |
> |
} catch (Exception ex) { |
1432 |
> |
unexpectedException(); |
1433 |
> |
} |
1434 |
> |
} |
1435 |
> |
|
1436 |
> |
|
1437 |
> |
/** |
1438 |
> |
* getWaitQueueLength throws IAE if not owned |
1439 |
> |
*/ |
1440 |
> |
public void testGetWaitQueueLengthIAE() { |
1441 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1442 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1443 |
> |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1444 |
> |
try { |
1445 |
> |
lock2.getWaitQueueLength(c); |
1446 |
> |
shouldThrow(); |
1447 |
> |
} catch (IllegalArgumentException success) { |
1448 |
> |
} catch (Exception ex) { |
1449 |
> |
unexpectedException(); |
1450 |
> |
} |
1451 |
> |
} |
1452 |
> |
|
1453 |
> |
/** |
1454 |
> |
* getWaitQueueLength throws IMSE if not locked |
1455 |
> |
*/ |
1456 |
> |
public void testGetWaitQueueLengthIMSE() { |
1457 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1458 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1459 |
> |
try { |
1460 |
> |
lock.getWaitQueueLength(c); |
1461 |
> |
shouldThrow(); |
1462 |
> |
} catch (IllegalMonitorStateException success) { |
1463 |
> |
} catch (Exception ex) { |
1464 |
> |
unexpectedException(); |
1465 |
> |
} |
1466 |
> |
} |
1467 |
> |
|
1468 |
> |
|
1469 |
> |
/** |
1470 |
> |
* getWaitingThreads throws IAE if not owned |
1471 |
> |
*/ |
1472 |
> |
public void testGetWaitingThreadsIAE() { |
1473 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1474 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1475 |
> |
final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock(); |
1476 |
> |
try { |
1477 |
> |
lock2.getWaitingThreads(c); |
1478 |
> |
shouldThrow(); |
1479 |
> |
} catch (IllegalArgumentException success) { |
1480 |
> |
} catch (Exception ex) { |
1481 |
> |
unexpectedException(); |
1482 |
> |
} |
1483 |
> |
} |
1484 |
> |
|
1485 |
> |
/** |
1486 |
> |
* getWaitingThreads throws IMSE if not locked |
1487 |
> |
*/ |
1488 |
> |
public void testGetWaitingThreadsIMSE() { |
1489 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1490 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1491 |
> |
try { |
1492 |
> |
lock.getWaitingThreads(c); |
1493 |
> |
shouldThrow(); |
1494 |
> |
} catch (IllegalMonitorStateException success) { |
1495 |
> |
} catch (Exception ex) { |
1496 |
> |
unexpectedException(); |
1497 |
> |
} |
1498 |
> |
} |
1499 |
> |
|
1500 |
> |
|
1501 |
> |
/** |
1502 |
> |
* hasWaiters returns true when a thread is waiting, else false |
1503 |
> |
*/ |
1504 |
> |
public void testHasWaiters() { |
1505 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1506 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1507 |
> |
Thread t = new Thread(new Runnable() { |
1508 |
> |
public void run() { |
1509 |
> |
try { |
1510 |
> |
lock.writeLock().lock(); |
1511 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
1512 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
1513 |
> |
c.await(); |
1514 |
> |
lock.writeLock().unlock(); |
1515 |
> |
} |
1516 |
> |
catch(InterruptedException e) { |
1517 |
> |
threadUnexpectedException(); |
1518 |
> |
} |
1519 |
> |
} |
1520 |
> |
}); |
1521 |
> |
|
1522 |
> |
try { |
1523 |
> |
t.start(); |
1524 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1525 |
> |
lock.writeLock().lock(); |
1526 |
> |
assertTrue(lock.hasWaiters(c)); |
1527 |
> |
assertEquals(1, lock.getWaitQueueLength(c)); |
1528 |
> |
c.signal(); |
1529 |
> |
lock.writeLock().unlock(); |
1530 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1531 |
> |
lock.writeLock().lock(); |
1532 |
> |
assertFalse(lock.hasWaiters(c)); |
1533 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
1534 |
> |
lock.writeLock().unlock(); |
1535 |
> |
t.join(SHORT_DELAY_MS); |
1536 |
> |
assertFalse(t.isAlive()); |
1537 |
> |
} |
1538 |
> |
catch (Exception ex) { |
1539 |
> |
unexpectedException(); |
1540 |
> |
} |
1541 |
> |
} |
1542 |
> |
|
1543 |
> |
/** |
1544 |
> |
* getWaitQueueLength returns number of waiting threads |
1545 |
> |
*/ |
1546 |
> |
public void testGetWaitQueueLength() { |
1547 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1548 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1549 |
> |
Thread t = new Thread(new Runnable() { |
1550 |
> |
public void run() { |
1551 |
> |
try { |
1552 |
> |
lock.writeLock().lock(); |
1553 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
1554 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
1555 |
> |
c.await(); |
1556 |
> |
lock.writeLock().unlock(); |
1557 |
> |
} |
1558 |
> |
catch(InterruptedException e) { |
1559 |
> |
threadUnexpectedException(); |
1560 |
> |
} |
1561 |
> |
} |
1562 |
> |
}); |
1563 |
> |
|
1564 |
> |
try { |
1565 |
> |
t.start(); |
1566 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1567 |
> |
lock.writeLock().lock(); |
1568 |
> |
assertTrue(lock.hasWaiters(c)); |
1569 |
> |
assertEquals(1, lock.getWaitQueueLength(c)); |
1570 |
> |
c.signal(); |
1571 |
> |
lock.writeLock().unlock(); |
1572 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1573 |
> |
lock.writeLock().lock(); |
1574 |
> |
assertFalse(lock.hasWaiters(c)); |
1575 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
1576 |
> |
lock.writeLock().unlock(); |
1577 |
> |
t.join(SHORT_DELAY_MS); |
1578 |
> |
assertFalse(t.isAlive()); |
1579 |
> |
} |
1580 |
> |
catch (Exception ex) { |
1581 |
> |
unexpectedException(); |
1582 |
> |
} |
1583 |
> |
} |
1584 |
> |
|
1585 |
> |
|
1586 |
> |
/** |
1587 |
> |
* getWaitingThreads returns only and all waiting threads |
1588 |
> |
*/ |
1589 |
> |
public void testGetWaitingThreads() { |
1590 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1591 |
> |
final Condition c = lock.writeLock().newCondition(); |
1592 |
> |
Thread t1 = new Thread(new Runnable() { |
1593 |
> |
public void run() { |
1594 |
> |
try { |
1595 |
> |
lock.writeLock().lock(); |
1596 |
> |
threadAssertTrue(lock.getWaitingThreads(c).isEmpty()); |
1597 |
> |
c.await(); |
1598 |
> |
lock.writeLock().unlock(); |
1599 |
> |
} |
1600 |
> |
catch(InterruptedException e) { |
1601 |
> |
threadUnexpectedException(); |
1602 |
> |
} |
1603 |
> |
} |
1604 |
> |
}); |
1605 |
> |
|
1606 |
> |
Thread t2 = new Thread(new Runnable() { |
1607 |
> |
public void run() { |
1608 |
> |
try { |
1609 |
> |
lock.writeLock().lock(); |
1610 |
> |
threadAssertFalse(lock.getWaitingThreads(c).isEmpty()); |
1611 |
> |
c.await(); |
1612 |
> |
lock.writeLock().unlock(); |
1613 |
> |
} |
1614 |
> |
catch(InterruptedException e) { |
1615 |
> |
threadUnexpectedException(); |
1616 |
> |
} |
1617 |
> |
} |
1618 |
> |
}); |
1619 |
> |
|
1620 |
> |
try { |
1621 |
> |
lock.writeLock().lock(); |
1622 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1623 |
> |
lock.writeLock().unlock(); |
1624 |
> |
t1.start(); |
1625 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1626 |
> |
t2.start(); |
1627 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1628 |
> |
lock.writeLock().lock(); |
1629 |
> |
assertTrue(lock.hasWaiters(c)); |
1630 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
1631 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
1632 |
> |
c.signalAll(); |
1633 |
> |
lock.writeLock().unlock(); |
1634 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1635 |
> |
lock.writeLock().lock(); |
1636 |
> |
assertFalse(lock.hasWaiters(c)); |
1637 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1638 |
> |
lock.writeLock().unlock(); |
1639 |
> |
t1.join(SHORT_DELAY_MS); |
1640 |
> |
t2.join(SHORT_DELAY_MS); |
1641 |
> |
assertFalse(t1.isAlive()); |
1642 |
> |
assertFalse(t2.isAlive()); |
1643 |
> |
} |
1644 |
> |
catch (Exception ex) { |
1645 |
> |
unexpectedException(); |
1646 |
> |
} |
1647 |
> |
} |
1648 |
> |
|
1649 |
> |
/** |
1650 |
> |
* toString indicates current lock state |
1651 |
> |
*/ |
1652 |
> |
public void testToString() { |
1653 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1654 |
> |
String us = lock.toString(); |
1655 |
> |
assertTrue(us.indexOf("Write locks = 0") >= 0); |
1656 |
> |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1657 |
> |
lock.writeLock().lock(); |
1658 |
> |
String ws = lock.toString(); |
1659 |
> |
assertTrue(ws.indexOf("Write locks = 1") >= 0); |
1660 |
> |
assertTrue(ws.indexOf("Read locks = 0") >= 0); |
1661 |
> |
lock.writeLock().unlock(); |
1662 |
> |
lock.readLock().lock(); |
1663 |
> |
lock.readLock().lock(); |
1664 |
> |
String rs = lock.toString(); |
1665 |
> |
assertTrue(rs.indexOf("Write locks = 0") >= 0); |
1666 |
> |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1667 |
> |
} |
1668 |
> |
|
1669 |
> |
/** |
1670 |
> |
* readLock.toString indicates current lock state |
1671 |
> |
*/ |
1672 |
> |
public void testReadLockToString() { |
1673 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1674 |
> |
String us = lock.readLock().toString(); |
1675 |
> |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1676 |
> |
lock.readLock().lock(); |
1677 |
> |
lock.readLock().lock(); |
1678 |
> |
String rs = lock.readLock().toString(); |
1679 |
> |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1680 |
> |
} |
1681 |
> |
|
1682 |
> |
/** |
1683 |
> |
* writeLock.toString indicates current lock state |
1684 |
> |
*/ |
1685 |
> |
public void testWriteLockToString() { |
1686 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1687 |
> |
String us = lock.writeLock().toString(); |
1688 |
> |
assertTrue(us.indexOf("Unlocked") >= 0); |
1689 |
> |
lock.writeLock().lock(); |
1690 |
> |
String ls = lock.writeLock().toString(); |
1691 |
> |
assertTrue(ls.indexOf("Locked") >= 0); |
1692 |
|
} |
112 |
– |
|
1693 |
|
|
1694 |
|
} |