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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.util.*; |
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import java.io.*; |
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|
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public class ReentrantLockTest extends TestCase { |
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static int HOLD_COUNT_TEST_LIMIT = 20; |
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|
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public class ReentrantLockTest 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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} |
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|
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public static Test suite() { |
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return new TestSuite(ReentrantLockTest.class); |
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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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* A runnable calling lockInterruptibly |
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*/ |
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|
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public void testIllegalMonitorStateException(){ |
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class InterruptibleLockRunnable implements Runnable { |
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final ReentrantLock lock; |
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InterruptibleLockRunnable(ReentrantLock l) { lock = l; } |
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public void run() { |
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try { |
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lock.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 ReentrantLock lock; |
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InterruptedLockRunnable(ReentrantLock l) { lock = l; } |
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public void run() { |
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> |
try { |
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> |
lock.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 PublicReentrantLock extends ReentrantLock { |
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PublicReentrantLock() { 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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} |
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|
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/** |
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* Constructor sets given fairness |
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*/ |
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public void testConstructor() { |
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ReentrantLock rl = new ReentrantLock(); |
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try{ |
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assertFalse(rl.isFair()); |
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ReentrantLock r2 = new ReentrantLock(true); |
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assertTrue(r2.isFair()); |
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> |
} |
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|
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/** |
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* locking an unlocked lock succeeds |
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*/ |
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public void testLock() { |
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ReentrantLock rl = new ReentrantLock(); |
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rl.lock(); |
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assertTrue(rl.isLocked()); |
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rl.unlock(); |
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} |
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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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ReentrantLock rl = new ReentrantLock(true); |
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rl.lock(); |
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assertTrue(rl.isLocked()); |
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rl.unlock(); |
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} |
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|
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/** |
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* Unlocking an unlocked lock throws IllegalMonitorStateException |
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*/ |
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public void testUnlock_IllegalMonitorStateException() { |
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ReentrantLock rl = new ReentrantLock(); |
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try { |
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rl.unlock(); |
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fail("Should of thown Illegal Monitor State Exception"); |
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shouldThrow(); |
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|
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} catch(IllegalMonitorStateException success){} |
107 |
> |
} |
108 |
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|
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/** |
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* tryLock on an unlocked lock succeeds |
111 |
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*/ |
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public void testTryLock() { |
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ReentrantLock rl = new ReentrantLock(); |
114 |
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assertTrue(rl.tryLock()); |
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assertTrue(rl.isLocked()); |
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rl.unlock(); |
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} |
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|
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}catch(IllegalMonitorStateException sucess){} |
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|
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/** |
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* hasQueuedThreads reports whether there are waiting threads |
122 |
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*/ |
123 |
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public void testhasQueuedThreads() { |
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final ReentrantLock lock = new ReentrantLock(); |
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Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
126 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
127 |
+ |
try { |
128 |
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assertFalse(lock.hasQueuedThreads()); |
129 |
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lock.lock(); |
130 |
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t1.start(); |
131 |
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Thread.sleep(SHORT_DELAY_MS); |
132 |
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assertTrue(lock.hasQueuedThreads()); |
133 |
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t2.start(); |
134 |
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Thread.sleep(SHORT_DELAY_MS); |
135 |
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assertTrue(lock.hasQueuedThreads()); |
136 |
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t1.interrupt(); |
137 |
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Thread.sleep(SHORT_DELAY_MS); |
138 |
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assertTrue(lock.hasQueuedThreads()); |
139 |
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lock.unlock(); |
140 |
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Thread.sleep(SHORT_DELAY_MS); |
141 |
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assertFalse(lock.hasQueuedThreads()); |
142 |
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t1.join(); |
143 |
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t2.join(); |
144 |
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} catch(Exception e){ |
145 |
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unexpectedException(); |
146 |
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} |
147 |
+ |
} |
148 |
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|
149 |
+ |
/** |
150 |
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* getQueueLength reports number of waiting threads |
151 |
+ |
*/ |
152 |
+ |
public void testGetQueueLength() { |
153 |
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final ReentrantLock lock = new ReentrantLock(); |
154 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
155 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
156 |
+ |
try { |
157 |
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assertEquals(0, lock.getQueueLength()); |
158 |
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lock.lock(); |
159 |
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t1.start(); |
160 |
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Thread.sleep(SHORT_DELAY_MS); |
161 |
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assertEquals(1, lock.getQueueLength()); |
162 |
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t2.start(); |
163 |
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Thread.sleep(SHORT_DELAY_MS); |
164 |
+ |
assertEquals(2, lock.getQueueLength()); |
165 |
+ |
t1.interrupt(); |
166 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
167 |
+ |
assertEquals(1, lock.getQueueLength()); |
168 |
+ |
lock.unlock(); |
169 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
170 |
+ |
assertEquals(0, lock.getQueueLength()); |
171 |
+ |
t1.join(); |
172 |
+ |
t2.join(); |
173 |
+ |
} catch(Exception e){ |
174 |
+ |
unexpectedException(); |
175 |
+ |
} |
176 |
+ |
} |
177 |
+ |
|
178 |
+ |
/** |
179 |
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* getQueueLength reports number of waiting threads |
180 |
+ |
*/ |
181 |
+ |
public void testGetQueueLength_fair() { |
182 |
+ |
final ReentrantLock lock = new ReentrantLock(true); |
183 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
184 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
185 |
+ |
try { |
186 |
+ |
assertEquals(0, lock.getQueueLength()); |
187 |
+ |
lock.lock(); |
188 |
+ |
t1.start(); |
189 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
190 |
+ |
assertEquals(1, lock.getQueueLength()); |
191 |
+ |
t2.start(); |
192 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
193 |
+ |
assertEquals(2, lock.getQueueLength()); |
194 |
+ |
t1.interrupt(); |
195 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
196 |
+ |
assertEquals(1, lock.getQueueLength()); |
197 |
+ |
lock.unlock(); |
198 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
199 |
+ |
assertEquals(0, lock.getQueueLength()); |
200 |
+ |
t1.join(); |
201 |
+ |
t2.join(); |
202 |
+ |
} catch(Exception e){ |
203 |
+ |
unexpectedException(); |
204 |
+ |
} |
205 |
+ |
} |
206 |
+ |
|
207 |
+ |
/** |
208 |
+ |
* hasQueuedThread(null) throws NPE |
209 |
+ |
*/ |
210 |
+ |
public void testHasQueuedThreadNPE() { |
211 |
+ |
final ReentrantLock sync = new ReentrantLock(); |
212 |
+ |
try { |
213 |
+ |
sync.hasQueuedThread(null); |
214 |
+ |
shouldThrow(); |
215 |
+ |
} catch (NullPointerException success) { |
216 |
+ |
} |
217 |
|
} |
218 |
< |
|
219 |
< |
/* |
220 |
< |
* makes a lock, locks it, tries to aquire the lock in another thread |
221 |
< |
* interrupts that thread and waits for an interrupted Exception to |
222 |
< |
* be thrown. |
218 |
> |
|
219 |
> |
/** |
220 |
> |
* hasQueuedThread reports whether a thread is queued. |
221 |
> |
*/ |
222 |
> |
public void testHasQueuedThread() { |
223 |
> |
final ReentrantLock sync = new ReentrantLock(); |
224 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
225 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
226 |
> |
try { |
227 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
228 |
> |
assertFalse(sync.hasQueuedThread(t2)); |
229 |
> |
sync.lock(); |
230 |
> |
t1.start(); |
231 |
> |
Thread.sleep(SHORT_DELAY_MS); |
232 |
> |
assertTrue(sync.hasQueuedThread(t1)); |
233 |
> |
t2.start(); |
234 |
> |
Thread.sleep(SHORT_DELAY_MS); |
235 |
> |
assertTrue(sync.hasQueuedThread(t1)); |
236 |
> |
assertTrue(sync.hasQueuedThread(t2)); |
237 |
> |
t1.interrupt(); |
238 |
> |
Thread.sleep(SHORT_DELAY_MS); |
239 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
240 |
> |
assertTrue(sync.hasQueuedThread(t2)); |
241 |
> |
sync.unlock(); |
242 |
> |
Thread.sleep(SHORT_DELAY_MS); |
243 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
244 |
> |
Thread.sleep(SHORT_DELAY_MS); |
245 |
> |
assertFalse(sync.hasQueuedThread(t2)); |
246 |
> |
t1.join(); |
247 |
> |
t2.join(); |
248 |
> |
} catch(Exception e){ |
249 |
> |
unexpectedException(); |
250 |
> |
} |
251 |
> |
} |
252 |
> |
|
253 |
> |
|
254 |
> |
/** |
255 |
> |
* getQueuedThreads includes waiting threads |
256 |
|
*/ |
257 |
+ |
public void testGetQueuedThreads() { |
258 |
+ |
final PublicReentrantLock lock = new PublicReentrantLock(); |
259 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
260 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
261 |
+ |
try { |
262 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
263 |
+ |
lock.lock(); |
264 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
265 |
+ |
t1.start(); |
266 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
267 |
+ |
assertTrue(lock.getQueuedThreads().contains(t1)); |
268 |
+ |
t2.start(); |
269 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
270 |
+ |
assertTrue(lock.getQueuedThreads().contains(t1)); |
271 |
+ |
assertTrue(lock.getQueuedThreads().contains(t2)); |
272 |
+ |
t1.interrupt(); |
273 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
274 |
+ |
assertFalse(lock.getQueuedThreads().contains(t1)); |
275 |
+ |
assertTrue(lock.getQueuedThreads().contains(t2)); |
276 |
+ |
lock.unlock(); |
277 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
278 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
279 |
+ |
t1.join(); |
280 |
+ |
t2.join(); |
281 |
+ |
} catch(Exception e){ |
282 |
+ |
unexpectedException(); |
283 |
+ |
} |
284 |
+ |
} |
285 |
+ |
|
286 |
|
|
287 |
< |
public void testInterruptedException(){ |
287 |
> |
/** |
288 |
> |
* timed tryLock is interruptible. |
289 |
> |
*/ |
290 |
> |
public void testInterruptedException2() { |
291 |
|
final ReentrantLock lock = new ReentrantLock(); |
292 |
|
lock.lock(); |
293 |
|
Thread t = new Thread(new Runnable() { |
294 |
< |
public void run(){ |
295 |
< |
try{ |
296 |
< |
lock.lockInterruptibly(); |
297 |
< |
fail("should throw"); |
298 |
< |
}catch(InterruptedException sucess){} |
294 |
> |
public void run() { |
295 |
> |
try { |
296 |
> |
lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS); |
297 |
> |
threadShouldThrow(); |
298 |
> |
} catch(InterruptedException success){} |
299 |
|
} |
300 |
|
}); |
301 |
< |
t.start(); |
302 |
< |
t.interrupt(); |
303 |
< |
lock.unlock(); |
304 |
< |
} |
301 |
> |
try { |
302 |
> |
t.start(); |
303 |
> |
t.interrupt(); |
304 |
> |
} catch(Exception e){ |
305 |
> |
unexpectedException(); |
306 |
> |
} |
307 |
> |
} |
308 |
|
|
65 |
– |
/* |
66 |
– |
* tests for interrupted exception on a timed wait |
67 |
– |
* |
68 |
– |
*/ |
69 |
– |
|
309 |
|
|
310 |
< |
public void testInterruptedException2(){ |
310 |
> |
/** |
311 |
> |
* TryLock on a locked lock fails |
312 |
> |
*/ |
313 |
> |
public void testTryLockWhenLocked() { |
314 |
|
final ReentrantLock lock = new ReentrantLock(); |
315 |
|
lock.lock(); |
316 |
|
Thread t = new Thread(new Runnable() { |
317 |
< |
public void run(){ |
318 |
< |
try{ |
77 |
< |
lock.tryLock(1000,TimeUnit.MILLISECONDS); |
78 |
< |
fail("should throw"); |
79 |
< |
}catch(InterruptedException sucess){} |
317 |
> |
public void run() { |
318 |
> |
threadAssertFalse(lock.tryLock()); |
319 |
|
} |
320 |
|
}); |
321 |
< |
t.start(); |
322 |
< |
t.interrupt(); |
323 |
< |
} |
321 |
> |
try { |
322 |
> |
t.start(); |
323 |
> |
t.join(); |
324 |
> |
lock.unlock(); |
325 |
> |
} catch(Exception e){ |
326 |
> |
unexpectedException(); |
327 |
> |
} |
328 |
> |
} |
329 |
|
|
330 |
+ |
/** |
331 |
+ |
* Timed tryLock on a locked lock times out |
332 |
+ |
*/ |
333 |
+ |
public void testTryLock_Timeout() { |
334 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
335 |
+ |
lock.lock(); |
336 |
+ |
Thread t = new Thread(new Runnable() { |
337 |
+ |
public void run() { |
338 |
+ |
try { |
339 |
+ |
threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
340 |
+ |
} catch (Exception ex) { |
341 |
+ |
threadUnexpectedException(); |
342 |
+ |
} |
343 |
+ |
} |
344 |
+ |
}); |
345 |
+ |
try { |
346 |
+ |
t.start(); |
347 |
+ |
t.join(); |
348 |
+ |
lock.unlock(); |
349 |
+ |
} catch(Exception e){ |
350 |
+ |
unexpectedException(); |
351 |
+ |
} |
352 |
+ |
} |
353 |
|
|
354 |
+ |
/** |
355 |
+ |
* getHoldCount returns number of recursive holds |
356 |
+ |
*/ |
357 |
|
public void testGetHoldCount() { |
358 |
|
ReentrantLock lock = new ReentrantLock(); |
359 |
< |
for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) { |
359 |
> |
for(int i = 1; i <= SIZE; i++) { |
360 |
|
lock.lock(); |
361 |
|
assertEquals(i,lock.getHoldCount()); |
362 |
|
} |
363 |
< |
for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) { |
363 |
> |
for(int i = SIZE; i > 0; i--) { |
364 |
|
lock.unlock(); |
365 |
|
assertEquals(i-1,lock.getHoldCount()); |
366 |
|
} |
367 |
|
} |
368 |
|
|
369 |
|
|
370 |
< |
|
371 |
< |
|
370 |
> |
/** |
371 |
> |
* isLocked is true when locked and false when not |
372 |
> |
*/ |
373 |
|
public void testIsLocked() { |
374 |
|
final ReentrantLock lock = new ReentrantLock(); |
375 |
|
lock.lock(); |
380 |
|
public void run() { |
381 |
|
lock.lock(); |
382 |
|
try { |
383 |
< |
Thread.sleep(SHORT_DELAY_MS * 2); |
383 |
> |
Thread.sleep(SMALL_DELAY_MS); |
384 |
|
} |
385 |
< |
catch(Exception e) {} |
385 |
> |
catch(Exception e) { |
386 |
> |
threadUnexpectedException(); |
387 |
> |
} |
388 |
|
lock.unlock(); |
389 |
|
} |
390 |
|
}); |
391 |
< |
try{ |
391 |
> |
try { |
392 |
|
t.start(); |
393 |
|
Thread.sleep(SHORT_DELAY_MS); |
394 |
|
assertTrue(lock.isLocked()); |
395 |
|
t.join(); |
396 |
|
assertFalse(lock.isLocked()); |
397 |
|
} catch(Exception e){ |
398 |
< |
fail("unexpected exception"); |
398 |
> |
unexpectedException(); |
399 |
|
} |
400 |
+ |
} |
401 |
+ |
|
402 |
|
|
403 |
+ |
/** |
404 |
+ |
* lockInterruptibly is interruptible. |
405 |
+ |
*/ |
406 |
+ |
public void testLockInterruptibly1() { |
407 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
408 |
+ |
lock.lock(); |
409 |
+ |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
410 |
+ |
try { |
411 |
+ |
t.start(); |
412 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
413 |
+ |
t.interrupt(); |
414 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
415 |
+ |
lock.unlock(); |
416 |
+ |
t.join(); |
417 |
+ |
} catch(Exception e){ |
418 |
+ |
unexpectedException(); |
419 |
+ |
} |
420 |
+ |
} |
421 |
+ |
|
422 |
+ |
/** |
423 |
+ |
* lockInterruptibly succeeds when unlocked, else is interruptible |
424 |
+ |
*/ |
425 |
+ |
public void testLockInterruptibly2() { |
426 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
427 |
+ |
try { |
428 |
+ |
lock.lockInterruptibly(); |
429 |
+ |
} catch(Exception e) { |
430 |
+ |
unexpectedException(); |
431 |
+ |
} |
432 |
+ |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
433 |
+ |
try { |
434 |
+ |
t.start(); |
435 |
+ |
t.interrupt(); |
436 |
+ |
assertTrue(lock.isLocked()); |
437 |
+ |
assertTrue(lock.isHeldByCurrentThread()); |
438 |
+ |
t.join(); |
439 |
+ |
} catch(Exception e){ |
440 |
+ |
unexpectedException(); |
441 |
+ |
} |
442 |
|
} |
443 |
|
|
444 |
< |
/* |
445 |
< |
* current thread locks interruptibly the thread |
132 |
< |
* another thread tries to aquire the lock and blocks |
133 |
< |
* on the call. interrupt the attempted aquireLock |
134 |
< |
* assert that the first lock() call actually locked the lock |
135 |
< |
* assert that the current thread is the one holding the lock |
444 |
> |
/** |
445 |
> |
* Calling await without holding lock throws IllegalMonitorStateException |
446 |
|
*/ |
447 |
+ |
public void testAwait_IllegalMonitor() { |
448 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
449 |
+ |
final Condition c = lock.newCondition(); |
450 |
+ |
try { |
451 |
+ |
c.await(); |
452 |
+ |
shouldThrow(); |
453 |
+ |
} |
454 |
+ |
catch (IllegalMonitorStateException success) { |
455 |
+ |
} |
456 |
+ |
catch (Exception ex) { |
457 |
+ |
unexpectedException(); |
458 |
+ |
} |
459 |
+ |
} |
460 |
|
|
461 |
< |
public void testLockedInterruptibly() { |
461 |
> |
/** |
462 |
> |
* Calling signal without holding lock throws IllegalMonitorStateException |
463 |
> |
*/ |
464 |
> |
public void testSignal_IllegalMonitor() { |
465 |
|
final ReentrantLock lock = new ReentrantLock(); |
466 |
< |
try {lock.lockInterruptibly();} catch(Exception e) {} |
466 |
> |
final Condition c = lock.newCondition(); |
467 |
> |
try { |
468 |
> |
c.signal(); |
469 |
> |
shouldThrow(); |
470 |
> |
} |
471 |
> |
catch (IllegalMonitorStateException success) { |
472 |
> |
} |
473 |
> |
catch (Exception ex) { |
474 |
> |
unexpectedException(); |
475 |
> |
} |
476 |
> |
} |
477 |
> |
|
478 |
> |
/** |
479 |
> |
* awaitNanos without a signal times out |
480 |
> |
*/ |
481 |
> |
public void testAwaitNanos_Timeout() { |
482 |
> |
final ReentrantLock lock = new ReentrantLock(); |
483 |
> |
final Condition c = lock.newCondition(); |
484 |
> |
try { |
485 |
> |
lock.lock(); |
486 |
> |
long t = c.awaitNanos(100); |
487 |
> |
assertTrue(t <= 0); |
488 |
> |
lock.unlock(); |
489 |
> |
} |
490 |
> |
catch (Exception ex) { |
491 |
> |
unexpectedException(); |
492 |
> |
} |
493 |
> |
} |
494 |
> |
|
495 |
> |
/** |
496 |
> |
* timed await without a signal times out |
497 |
> |
*/ |
498 |
> |
public void testAwait_Timeout() { |
499 |
> |
final ReentrantLock lock = new ReentrantLock(); |
500 |
> |
final Condition c = lock.newCondition(); |
501 |
> |
try { |
502 |
> |
lock.lock(); |
503 |
> |
c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
504 |
> |
lock.unlock(); |
505 |
> |
} |
506 |
> |
catch (Exception ex) { |
507 |
> |
unexpectedException(); |
508 |
> |
} |
509 |
> |
} |
510 |
> |
|
511 |
> |
/** |
512 |
> |
* awaitUntil without a signal times out |
513 |
> |
*/ |
514 |
> |
public void testAwaitUntil_Timeout() { |
515 |
> |
final ReentrantLock lock = new ReentrantLock(); |
516 |
> |
final Condition c = lock.newCondition(); |
517 |
> |
try { |
518 |
> |
lock.lock(); |
519 |
> |
java.util.Date d = new java.util.Date(); |
520 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10)); |
521 |
> |
lock.unlock(); |
522 |
> |
} |
523 |
> |
catch (Exception ex) { |
524 |
> |
unexpectedException(); |
525 |
> |
} |
526 |
> |
} |
527 |
> |
|
528 |
> |
/** |
529 |
> |
* await returns when signalled |
530 |
> |
*/ |
531 |
> |
public void testAwait() { |
532 |
> |
final ReentrantLock lock = new ReentrantLock(); |
533 |
> |
final Condition c = lock.newCondition(); |
534 |
|
Thread t = new Thread(new Runnable() { |
535 |
|
public void run() { |
536 |
|
try { |
537 |
< |
lock.lockInterruptibly(); |
538 |
< |
fail("Failed to generate an Interrupted Exception"); |
537 |
> |
lock.lock(); |
538 |
> |
c.await(); |
539 |
> |
lock.unlock(); |
540 |
|
} |
541 |
< |
catch(InterruptedException e) {} |
541 |
> |
catch(InterruptedException e) { |
542 |
> |
threadUnexpectedException(); |
543 |
> |
} |
544 |
|
} |
545 |
|
}); |
546 |
< |
t.start(); |
547 |
< |
t.interrupt(); |
548 |
< |
assertTrue(lock.isLocked()); |
549 |
< |
assertTrue(lock.isHeldByCurrentThread()); |
546 |
> |
|
547 |
> |
try { |
548 |
> |
t.start(); |
549 |
> |
Thread.sleep(SHORT_DELAY_MS); |
550 |
> |
lock.lock(); |
551 |
> |
c.signal(); |
552 |
> |
lock.unlock(); |
553 |
> |
t.join(SHORT_DELAY_MS); |
554 |
> |
assertFalse(t.isAlive()); |
555 |
> |
} |
556 |
> |
catch (Exception ex) { |
557 |
> |
unexpectedException(); |
558 |
> |
} |
559 |
> |
} |
560 |
> |
|
561 |
> |
/** |
562 |
> |
* hasWaiters throws NPE if null |
563 |
> |
*/ |
564 |
> |
public void testHasWaitersNPE() { |
565 |
> |
final ReentrantLock lock = new ReentrantLock(); |
566 |
> |
try { |
567 |
> |
lock.hasWaiters(null); |
568 |
> |
shouldThrow(); |
569 |
> |
} catch (NullPointerException success) { |
570 |
> |
} catch (Exception ex) { |
571 |
> |
unexpectedException(); |
572 |
> |
} |
573 |
> |
} |
574 |
> |
|
575 |
> |
/** |
576 |
> |
* getWaitQueueLength throws NPE if null |
577 |
> |
*/ |
578 |
> |
public void testGetWaitQueueLengthNPE() { |
579 |
> |
final ReentrantLock lock = new ReentrantLock(); |
580 |
> |
try { |
581 |
> |
lock.getWaitQueueLength(null); |
582 |
> |
shouldThrow(); |
583 |
> |
} catch (NullPointerException success) { |
584 |
> |
} catch (Exception ex) { |
585 |
> |
unexpectedException(); |
586 |
> |
} |
587 |
> |
} |
588 |
> |
|
589 |
> |
|
590 |
> |
/** |
591 |
> |
* getWaitingThreads throws NPE if null |
592 |
> |
*/ |
593 |
> |
public void testGetWaitingThreadsNPE() { |
594 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
595 |
> |
try { |
596 |
> |
lock.getWaitingThreads(null); |
597 |
> |
shouldThrow(); |
598 |
> |
} catch (NullPointerException success) { |
599 |
> |
} catch (Exception ex) { |
600 |
> |
unexpectedException(); |
601 |
> |
} |
602 |
> |
} |
603 |
> |
|
604 |
> |
|
605 |
> |
/** |
606 |
> |
* hasWaiters throws IAE if not owned |
607 |
> |
*/ |
608 |
> |
public void testHasWaitersIAE() { |
609 |
> |
final ReentrantLock lock = new ReentrantLock(); |
610 |
> |
final Condition c = (lock.newCondition()); |
611 |
> |
final ReentrantLock lock2 = new ReentrantLock(); |
612 |
> |
try { |
613 |
> |
lock2.hasWaiters(c); |
614 |
> |
shouldThrow(); |
615 |
> |
} catch (IllegalArgumentException success) { |
616 |
> |
} catch (Exception ex) { |
617 |
> |
unexpectedException(); |
618 |
> |
} |
619 |
> |
} |
620 |
> |
|
621 |
> |
/** |
622 |
> |
* hasWaiters throws IMSE if not locked |
623 |
> |
*/ |
624 |
> |
public void testHasWaitersIMSE() { |
625 |
> |
final ReentrantLock lock = new ReentrantLock(); |
626 |
> |
final Condition c = (lock.newCondition()); |
627 |
> |
try { |
628 |
> |
lock.hasWaiters(c); |
629 |
> |
shouldThrow(); |
630 |
> |
} catch (IllegalMonitorStateException success) { |
631 |
> |
} catch (Exception ex) { |
632 |
> |
unexpectedException(); |
633 |
> |
} |
634 |
> |
} |
635 |
> |
|
636 |
> |
|
637 |
> |
/** |
638 |
> |
* getWaitQueueLength throws IAE if not owned |
639 |
> |
*/ |
640 |
> |
public void testGetWaitQueueLengthIAE() { |
641 |
> |
final ReentrantLock lock = new ReentrantLock(); |
642 |
> |
final Condition c = (lock.newCondition()); |
643 |
> |
final ReentrantLock lock2 = new ReentrantLock(); |
644 |
> |
try { |
645 |
> |
lock2.getWaitQueueLength(c); |
646 |
> |
shouldThrow(); |
647 |
> |
} catch (IllegalArgumentException success) { |
648 |
> |
} catch (Exception ex) { |
649 |
> |
unexpectedException(); |
650 |
> |
} |
651 |
> |
} |
652 |
> |
|
653 |
> |
/** |
654 |
> |
* getWaitQueueLength throws IMSE if not locked |
655 |
> |
*/ |
656 |
> |
public void testGetWaitQueueLengthIMSE() { |
657 |
> |
final ReentrantLock lock = new ReentrantLock(); |
658 |
> |
final Condition c = (lock.newCondition()); |
659 |
> |
try { |
660 |
> |
lock.getWaitQueueLength(c); |
661 |
> |
shouldThrow(); |
662 |
> |
} catch (IllegalMonitorStateException success) { |
663 |
> |
} catch (Exception ex) { |
664 |
> |
unexpectedException(); |
665 |
> |
} |
666 |
> |
} |
667 |
> |
|
668 |
> |
|
669 |
> |
/** |
670 |
> |
* getWaitingThreads throws IAE if not owned |
671 |
> |
*/ |
672 |
> |
public void testGetWaitingThreadsIAE() { |
673 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
674 |
> |
final Condition c = (lock.newCondition()); |
675 |
> |
final PublicReentrantLock lock2 = new PublicReentrantLock(); |
676 |
> |
try { |
677 |
> |
lock2.getWaitingThreads(c); |
678 |
> |
shouldThrow(); |
679 |
> |
} catch (IllegalArgumentException success) { |
680 |
> |
} catch (Exception ex) { |
681 |
> |
unexpectedException(); |
682 |
> |
} |
683 |
> |
} |
684 |
> |
|
685 |
> |
/** |
686 |
> |
* getWaitingThreads throws IMSE if not locked |
687 |
> |
*/ |
688 |
> |
public void testGetWaitingThreadsIMSE() { |
689 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
690 |
> |
final Condition c = (lock.newCondition()); |
691 |
> |
try { |
692 |
> |
lock.getWaitingThreads(c); |
693 |
> |
shouldThrow(); |
694 |
> |
} catch (IllegalMonitorStateException success) { |
695 |
> |
} catch (Exception ex) { |
696 |
> |
unexpectedException(); |
697 |
> |
} |
698 |
> |
} |
699 |
> |
|
700 |
> |
|
701 |
> |
|
702 |
> |
/** |
703 |
> |
* hasWaiters returns true when a thread is waiting, else false |
704 |
> |
*/ |
705 |
> |
public void testHasWaiters() { |
706 |
> |
final ReentrantLock lock = new ReentrantLock(); |
707 |
> |
final Condition c = lock.newCondition(); |
708 |
> |
Thread t = new Thread(new Runnable() { |
709 |
> |
public void run() { |
710 |
> |
try { |
711 |
> |
lock.lock(); |
712 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
713 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
714 |
> |
c.await(); |
715 |
> |
lock.unlock(); |
716 |
> |
} |
717 |
> |
catch(InterruptedException e) { |
718 |
> |
threadUnexpectedException(); |
719 |
> |
} |
720 |
> |
} |
721 |
> |
}); |
722 |
> |
|
723 |
> |
try { |
724 |
> |
t.start(); |
725 |
> |
Thread.sleep(SHORT_DELAY_MS); |
726 |
> |
lock.lock(); |
727 |
> |
assertTrue(lock.hasWaiters(c)); |
728 |
> |
assertEquals(1, lock.getWaitQueueLength(c)); |
729 |
> |
c.signal(); |
730 |
> |
lock.unlock(); |
731 |
> |
Thread.sleep(SHORT_DELAY_MS); |
732 |
> |
lock.lock(); |
733 |
> |
assertFalse(lock.hasWaiters(c)); |
734 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
735 |
> |
lock.unlock(); |
736 |
> |
t.join(SHORT_DELAY_MS); |
737 |
> |
assertFalse(t.isAlive()); |
738 |
> |
} |
739 |
> |
catch (Exception ex) { |
740 |
> |
unexpectedException(); |
741 |
> |
} |
742 |
> |
} |
743 |
> |
|
744 |
> |
/** |
745 |
> |
* getWaitQueueLength returns number of waiting threads |
746 |
> |
*/ |
747 |
> |
public void testGetWaitQueueLength() { |
748 |
> |
final ReentrantLock lock = new ReentrantLock(); |
749 |
> |
final Condition c = lock.newCondition(); |
750 |
> |
Thread t1 = new Thread(new Runnable() { |
751 |
> |
public void run() { |
752 |
> |
try { |
753 |
> |
lock.lock(); |
754 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
755 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
756 |
> |
c.await(); |
757 |
> |
lock.unlock(); |
758 |
> |
} |
759 |
> |
catch(InterruptedException e) { |
760 |
> |
threadUnexpectedException(); |
761 |
> |
} |
762 |
> |
} |
763 |
> |
}); |
764 |
> |
|
765 |
> |
Thread t2 = new Thread(new Runnable() { |
766 |
> |
public void run() { |
767 |
> |
try { |
768 |
> |
lock.lock(); |
769 |
> |
threadAssertTrue(lock.hasWaiters(c)); |
770 |
> |
threadAssertEquals(1, lock.getWaitQueueLength(c)); |
771 |
> |
c.await(); |
772 |
> |
lock.unlock(); |
773 |
> |
} |
774 |
> |
catch(InterruptedException e) { |
775 |
> |
threadUnexpectedException(); |
776 |
> |
} |
777 |
> |
} |
778 |
> |
}); |
779 |
> |
|
780 |
> |
try { |
781 |
> |
t1.start(); |
782 |
> |
Thread.sleep(SHORT_DELAY_MS); |
783 |
> |
t2.start(); |
784 |
> |
Thread.sleep(SHORT_DELAY_MS); |
785 |
> |
lock.lock(); |
786 |
> |
assertTrue(lock.hasWaiters(c)); |
787 |
> |
assertEquals(2, lock.getWaitQueueLength(c)); |
788 |
> |
c.signalAll(); |
789 |
> |
lock.unlock(); |
790 |
> |
Thread.sleep(SHORT_DELAY_MS); |
791 |
> |
lock.lock(); |
792 |
> |
assertFalse(lock.hasWaiters(c)); |
793 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
794 |
> |
lock.unlock(); |
795 |
> |
t1.join(SHORT_DELAY_MS); |
796 |
> |
t2.join(SHORT_DELAY_MS); |
797 |
> |
assertFalse(t1.isAlive()); |
798 |
> |
assertFalse(t2.isAlive()); |
799 |
> |
} |
800 |
> |
catch (Exception ex) { |
801 |
> |
unexpectedException(); |
802 |
> |
} |
803 |
> |
} |
804 |
> |
|
805 |
> |
/** |
806 |
> |
* getWaitingThreads returns only and all waiting threads |
807 |
> |
*/ |
808 |
> |
public void testGetWaitingThreads() { |
809 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
810 |
> |
final Condition c = lock.newCondition(); |
811 |
> |
Thread t1 = new Thread(new Runnable() { |
812 |
> |
public void run() { |
813 |
> |
try { |
814 |
> |
lock.lock(); |
815 |
> |
threadAssertTrue(lock.getWaitingThreads(c).isEmpty()); |
816 |
> |
c.await(); |
817 |
> |
lock.unlock(); |
818 |
> |
} |
819 |
> |
catch(InterruptedException e) { |
820 |
> |
threadUnexpectedException(); |
821 |
> |
} |
822 |
> |
} |
823 |
> |
}); |
824 |
> |
|
825 |
> |
Thread t2 = new Thread(new Runnable() { |
826 |
> |
public void run() { |
827 |
> |
try { |
828 |
> |
lock.lock(); |
829 |
> |
threadAssertFalse(lock.getWaitingThreads(c).isEmpty()); |
830 |
> |
c.await(); |
831 |
> |
lock.unlock(); |
832 |
> |
} |
833 |
> |
catch(InterruptedException e) { |
834 |
> |
threadUnexpectedException(); |
835 |
> |
} |
836 |
> |
} |
837 |
> |
}); |
838 |
> |
|
839 |
> |
try { |
840 |
> |
lock.lock(); |
841 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
842 |
> |
lock.unlock(); |
843 |
> |
t1.start(); |
844 |
> |
Thread.sleep(SHORT_DELAY_MS); |
845 |
> |
t2.start(); |
846 |
> |
Thread.sleep(SHORT_DELAY_MS); |
847 |
> |
lock.lock(); |
848 |
> |
assertTrue(lock.hasWaiters(c)); |
849 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
850 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
851 |
> |
c.signalAll(); |
852 |
> |
lock.unlock(); |
853 |
> |
Thread.sleep(SHORT_DELAY_MS); |
854 |
> |
lock.lock(); |
855 |
> |
assertFalse(lock.hasWaiters(c)); |
856 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
857 |
> |
lock.unlock(); |
858 |
> |
t1.join(SHORT_DELAY_MS); |
859 |
> |
t2.join(SHORT_DELAY_MS); |
860 |
> |
assertFalse(t1.isAlive()); |
861 |
> |
assertFalse(t2.isAlive()); |
862 |
> |
} |
863 |
> |
catch (Exception ex) { |
864 |
> |
unexpectedException(); |
865 |
> |
} |
866 |
> |
} |
867 |
> |
|
868 |
> |
/** A helper class for uninterruptible wait tests */ |
869 |
> |
class UninterruptableThread extends Thread { |
870 |
> |
private ReentrantLock lock; |
871 |
> |
private Condition c; |
872 |
> |
|
873 |
> |
public volatile boolean canAwake = false; |
874 |
> |
public volatile boolean interrupted = false; |
875 |
> |
public volatile boolean lockStarted = false; |
876 |
> |
|
877 |
> |
public UninterruptableThread(ReentrantLock lock, Condition c) { |
878 |
> |
this.lock = lock; |
879 |
> |
this.c = c; |
880 |
> |
} |
881 |
> |
|
882 |
> |
public synchronized void run() { |
883 |
> |
lock.lock(); |
884 |
> |
lockStarted = true; |
885 |
> |
|
886 |
> |
while (!canAwake) { |
887 |
> |
c.awaitUninterruptibly(); |
888 |
> |
} |
889 |
> |
|
890 |
> |
interrupted = isInterrupted(); |
891 |
> |
lock.unlock(); |
892 |
> |
} |
893 |
> |
} |
894 |
> |
|
895 |
> |
/** |
896 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
897 |
> |
*/ |
898 |
> |
public void testAwaitUninterruptibly() { |
899 |
> |
final ReentrantLock lock = new ReentrantLock(); |
900 |
> |
final Condition c = lock.newCondition(); |
901 |
> |
UninterruptableThread thread = new UninterruptableThread(lock, c); |
902 |
> |
|
903 |
> |
try { |
904 |
> |
thread.start(); |
905 |
> |
|
906 |
> |
while (!thread.lockStarted) { |
907 |
> |
Thread.sleep(100); |
908 |
> |
} |
909 |
> |
|
910 |
> |
lock.lock(); |
911 |
> |
try { |
912 |
> |
thread.interrupt(); |
913 |
> |
thread.canAwake = true; |
914 |
> |
c.signal(); |
915 |
> |
} finally { |
916 |
> |
lock.unlock(); |
917 |
> |
} |
918 |
> |
|
919 |
> |
thread.join(); |
920 |
> |
assertTrue(thread.interrupted); |
921 |
> |
assertFalse(thread.isAlive()); |
922 |
> |
} catch (Exception ex) { |
923 |
> |
unexpectedException(); |
924 |
> |
} |
925 |
> |
} |
926 |
> |
|
927 |
> |
/** |
928 |
> |
* await is interruptible |
929 |
> |
*/ |
930 |
> |
public void testAwait_Interrupt() { |
931 |
> |
final ReentrantLock lock = new ReentrantLock(); |
932 |
> |
final Condition c = lock.newCondition(); |
933 |
> |
Thread t = new Thread(new Runnable() { |
934 |
> |
public void run() { |
935 |
> |
try { |
936 |
> |
lock.lock(); |
937 |
> |
c.await(); |
938 |
> |
lock.unlock(); |
939 |
> |
threadShouldThrow(); |
940 |
> |
} |
941 |
> |
catch(InterruptedException success) { |
942 |
> |
} |
943 |
> |
} |
944 |
> |
}); |
945 |
> |
|
946 |
> |
try { |
947 |
> |
t.start(); |
948 |
> |
Thread.sleep(SHORT_DELAY_MS); |
949 |
> |
t.interrupt(); |
950 |
> |
t.join(SHORT_DELAY_MS); |
951 |
> |
assertFalse(t.isAlive()); |
952 |
> |
} |
953 |
> |
catch (Exception ex) { |
954 |
> |
unexpectedException(); |
955 |
> |
} |
956 |
> |
} |
957 |
> |
|
958 |
> |
/** |
959 |
> |
* awaitNanos is interruptible |
960 |
> |
*/ |
961 |
> |
public void testAwaitNanos_Interrupt() { |
962 |
> |
final ReentrantLock lock = new ReentrantLock(); |
963 |
> |
final Condition c = lock.newCondition(); |
964 |
> |
Thread t = new Thread(new Runnable() { |
965 |
> |
public void run() { |
966 |
> |
try { |
967 |
> |
lock.lock(); |
968 |
> |
c.awaitNanos(1000 * 1000 * 1000); // 1 sec |
969 |
> |
lock.unlock(); |
970 |
> |
threadShouldThrow(); |
971 |
> |
} |
972 |
> |
catch(InterruptedException success) { |
973 |
> |
} |
974 |
> |
} |
975 |
> |
}); |
976 |
> |
|
977 |
> |
try { |
978 |
> |
t.start(); |
979 |
> |
Thread.sleep(SHORT_DELAY_MS); |
980 |
> |
t.interrupt(); |
981 |
> |
t.join(SHORT_DELAY_MS); |
982 |
> |
assertFalse(t.isAlive()); |
983 |
> |
} |
984 |
> |
catch (Exception ex) { |
985 |
> |
unexpectedException(); |
986 |
> |
} |
987 |
> |
} |
988 |
> |
|
989 |
> |
/** |
990 |
> |
* awaitUntil is interruptible |
991 |
> |
*/ |
992 |
> |
public void testAwaitUntil_Interrupt() { |
993 |
> |
final ReentrantLock lock = new ReentrantLock(); |
994 |
> |
final Condition c = lock.newCondition(); |
995 |
> |
Thread t = new Thread(new Runnable() { |
996 |
> |
public void run() { |
997 |
> |
try { |
998 |
> |
lock.lock(); |
999 |
> |
java.util.Date d = new java.util.Date(); |
1000 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
1001 |
> |
lock.unlock(); |
1002 |
> |
threadShouldThrow(); |
1003 |
> |
} |
1004 |
> |
catch(InterruptedException success) { |
1005 |
> |
} |
1006 |
> |
} |
1007 |
> |
}); |
1008 |
> |
|
1009 |
> |
try { |
1010 |
> |
t.start(); |
1011 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1012 |
> |
t.interrupt(); |
1013 |
> |
t.join(SHORT_DELAY_MS); |
1014 |
> |
assertFalse(t.isAlive()); |
1015 |
> |
} |
1016 |
> |
catch (Exception ex) { |
1017 |
> |
unexpectedException(); |
1018 |
> |
} |
1019 |
> |
} |
1020 |
> |
|
1021 |
> |
/** |
1022 |
> |
* signalAll wakes up all threads |
1023 |
> |
*/ |
1024 |
> |
public void testSignalAll() { |
1025 |
> |
final ReentrantLock lock = new ReentrantLock(); |
1026 |
> |
final Condition c = lock.newCondition(); |
1027 |
> |
Thread t1 = new Thread(new Runnable() { |
1028 |
> |
public void run() { |
1029 |
> |
try { |
1030 |
> |
lock.lock(); |
1031 |
> |
c.await(); |
1032 |
> |
lock.unlock(); |
1033 |
> |
} |
1034 |
> |
catch(InterruptedException e) { |
1035 |
> |
threadUnexpectedException(); |
1036 |
> |
} |
1037 |
> |
} |
1038 |
> |
}); |
1039 |
> |
|
1040 |
> |
Thread t2 = new Thread(new Runnable() { |
1041 |
> |
public void run() { |
1042 |
> |
try { |
1043 |
> |
lock.lock(); |
1044 |
> |
c.await(); |
1045 |
> |
lock.unlock(); |
1046 |
> |
} |
1047 |
> |
catch(InterruptedException e) { |
1048 |
> |
threadUnexpectedException(); |
1049 |
> |
} |
1050 |
> |
} |
1051 |
> |
}); |
1052 |
> |
|
1053 |
> |
try { |
1054 |
> |
t1.start(); |
1055 |
> |
t2.start(); |
1056 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1057 |
> |
lock.lock(); |
1058 |
> |
c.signalAll(); |
1059 |
> |
lock.unlock(); |
1060 |
> |
t1.join(SHORT_DELAY_MS); |
1061 |
> |
t2.join(SHORT_DELAY_MS); |
1062 |
> |
assertFalse(t1.isAlive()); |
1063 |
> |
assertFalse(t2.isAlive()); |
1064 |
> |
} |
1065 |
> |
catch (Exception ex) { |
1066 |
> |
unexpectedException(); |
1067 |
> |
} |
1068 |
> |
} |
1069 |
> |
|
1070 |
> |
/** |
1071 |
> |
* await after multiple reentrant locking preserves lock count |
1072 |
> |
*/ |
1073 |
> |
public void testAwaitLockCount() { |
1074 |
> |
final ReentrantLock lock = new ReentrantLock(); |
1075 |
> |
final Condition c = lock.newCondition(); |
1076 |
> |
Thread t1 = new Thread(new Runnable() { |
1077 |
> |
public void run() { |
1078 |
> |
try { |
1079 |
> |
lock.lock(); |
1080 |
> |
threadAssertEquals(1, lock.getHoldCount()); |
1081 |
> |
c.await(); |
1082 |
> |
threadAssertEquals(1, lock.getHoldCount()); |
1083 |
> |
lock.unlock(); |
1084 |
> |
} |
1085 |
> |
catch(InterruptedException e) { |
1086 |
> |
threadUnexpectedException(); |
1087 |
> |
} |
1088 |
> |
} |
1089 |
> |
}); |
1090 |
> |
|
1091 |
> |
Thread t2 = new Thread(new Runnable() { |
1092 |
> |
public void run() { |
1093 |
> |
try { |
1094 |
> |
lock.lock(); |
1095 |
> |
lock.lock(); |
1096 |
> |
threadAssertEquals(2, lock.getHoldCount()); |
1097 |
> |
c.await(); |
1098 |
> |
threadAssertEquals(2, lock.getHoldCount()); |
1099 |
> |
lock.unlock(); |
1100 |
> |
lock.unlock(); |
1101 |
> |
} |
1102 |
> |
catch(InterruptedException e) { |
1103 |
> |
threadUnexpectedException(); |
1104 |
> |
} |
1105 |
> |
} |
1106 |
> |
}); |
1107 |
> |
|
1108 |
> |
try { |
1109 |
> |
t1.start(); |
1110 |
> |
t2.start(); |
1111 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1112 |
> |
lock.lock(); |
1113 |
> |
c.signalAll(); |
1114 |
> |
lock.unlock(); |
1115 |
> |
t1.join(SHORT_DELAY_MS); |
1116 |
> |
t2.join(SHORT_DELAY_MS); |
1117 |
> |
assertFalse(t1.isAlive()); |
1118 |
> |
assertFalse(t2.isAlive()); |
1119 |
> |
} |
1120 |
> |
catch (Exception ex) { |
1121 |
> |
unexpectedException(); |
1122 |
> |
} |
1123 |
> |
} |
1124 |
> |
|
1125 |
> |
/** |
1126 |
> |
* A serialized lock deserializes as unlocked |
1127 |
> |
*/ |
1128 |
> |
public void testSerialization() { |
1129 |
> |
ReentrantLock l = new ReentrantLock(); |
1130 |
> |
l.lock(); |
1131 |
> |
l.unlock(); |
1132 |
> |
|
1133 |
> |
try { |
1134 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
1135 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
1136 |
> |
out.writeObject(l); |
1137 |
> |
out.close(); |
1138 |
> |
|
1139 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
1140 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
1141 |
> |
ReentrantLock r = (ReentrantLock) in.readObject(); |
1142 |
> |
r.lock(); |
1143 |
> |
r.unlock(); |
1144 |
> |
} catch(Exception e){ |
1145 |
> |
e.printStackTrace(); |
1146 |
> |
unexpectedException(); |
1147 |
> |
} |
1148 |
> |
} |
1149 |
> |
|
1150 |
> |
/** |
1151 |
> |
* toString indicates current lock state |
1152 |
> |
*/ |
1153 |
> |
public void testToString() { |
1154 |
> |
ReentrantLock lock = new ReentrantLock(); |
1155 |
> |
String us = lock.toString(); |
1156 |
> |
assertTrue(us.indexOf("Unlocked") >= 0); |
1157 |
> |
lock.lock(); |
1158 |
> |
String ls = lock.toString(); |
1159 |
> |
assertTrue(ls.indexOf("Locked") >= 0); |
1160 |
|
} |
155 |
– |
|
1161 |
|
|
1162 |
|
} |