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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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rl.unlock(); |
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fail("Should of thown Illegal Monitor State Exception"); |
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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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}catch(IllegalMonitorStateException sucess){} |
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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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shouldThrow(); |
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|
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} catch(IllegalMonitorStateException success){} |
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} |
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|
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/* |
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* makes a lock, locks it, tries to aquire the lock in another thread |
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* interrupts that thread and waits for an interrupted Exception to |
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* be thrown. |
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|
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/** |
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* tryLock on an unlocked lock succeeds |
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*/ |
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public void testTryLock() { |
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ReentrantLock rl = new ReentrantLock(); |
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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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|
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/** |
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* hasQueuedThreads reports whether there are waiting threads |
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*/ |
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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 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
127 |
> |
try { |
128 |
> |
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()); |
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t2.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
135 |
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assertTrue(lock.hasQueuedThreads()); |
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t1.interrupt(); |
137 |
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Thread.sleep(SHORT_DELAY_MS); |
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assertTrue(lock.hasQueuedThreads()); |
139 |
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lock.unlock(); |
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Thread.sleep(SHORT_DELAY_MS); |
141 |
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assertFalse(lock.hasQueuedThreads()); |
142 |
> |
t1.join(); |
143 |
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t2.join(); |
144 |
> |
} catch(Exception e){ |
145 |
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unexpectedException(); |
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} |
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> |
} |
148 |
> |
|
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/** |
150 |
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* getQueueLength reports number of waiting threads |
151 |
> |
*/ |
152 |
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public void testGetQueueLength() { |
153 |
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final ReentrantLock lock = new ReentrantLock(); |
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> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
155 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
156 |
> |
try { |
157 |
> |
assertEquals(0, lock.getQueueLength()); |
158 |
> |
lock.lock(); |
159 |
> |
t1.start(); |
160 |
> |
Thread.sleep(SHORT_DELAY_MS); |
161 |
> |
assertEquals(1, lock.getQueueLength()); |
162 |
> |
t2.start(); |
163 |
> |
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 |
> |
* 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 |
> |
* getQueuedThreads includes waiting threads |
209 |
|
*/ |
210 |
+ |
public void testGetQueuedThreads() { |
211 |
+ |
final PublicReentrantLock lock = new PublicReentrantLock(); |
212 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
213 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
214 |
+ |
try { |
215 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
216 |
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lock.lock(); |
217 |
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assertTrue(lock.getQueuedThreads().isEmpty()); |
218 |
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t1.start(); |
219 |
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Thread.sleep(SHORT_DELAY_MS); |
220 |
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assertTrue(lock.getQueuedThreads().contains(t1)); |
221 |
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t2.start(); |
222 |
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Thread.sleep(SHORT_DELAY_MS); |
223 |
+ |
assertTrue(lock.getQueuedThreads().contains(t1)); |
224 |
+ |
assertTrue(lock.getQueuedThreads().contains(t2)); |
225 |
+ |
t1.interrupt(); |
226 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
227 |
+ |
assertFalse(lock.getQueuedThreads().contains(t1)); |
228 |
+ |
assertTrue(lock.getQueuedThreads().contains(t2)); |
229 |
+ |
lock.unlock(); |
230 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
231 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
232 |
+ |
t1.join(); |
233 |
+ |
t2.join(); |
234 |
+ |
} catch(Exception e){ |
235 |
+ |
unexpectedException(); |
236 |
+ |
} |
237 |
+ |
} |
238 |
+ |
|
239 |
|
|
240 |
< |
public void testInterruptedException(){ |
240 |
> |
/** |
241 |
> |
* timed tryLock is interruptible. |
242 |
> |
*/ |
243 |
> |
public void testInterruptedException2() { |
244 |
|
final ReentrantLock lock = new ReentrantLock(); |
245 |
|
lock.lock(); |
246 |
|
Thread t = new Thread(new Runnable() { |
247 |
< |
public void run(){ |
248 |
< |
try{ |
249 |
< |
lock.lockInterruptibly(); |
250 |
< |
fail("should throw"); |
251 |
< |
}catch(InterruptedException sucess){} |
247 |
> |
public void run() { |
248 |
> |
try { |
249 |
> |
lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS); |
250 |
> |
threadShouldThrow(); |
251 |
> |
} catch(InterruptedException success){} |
252 |
|
} |
253 |
|
}); |
254 |
< |
t.start(); |
255 |
< |
t.interrupt(); |
256 |
< |
lock.unlock(); |
257 |
< |
} |
254 |
> |
try { |
255 |
> |
t.start(); |
256 |
> |
t.interrupt(); |
257 |
> |
} catch(Exception e){ |
258 |
> |
unexpectedException(); |
259 |
> |
} |
260 |
> |
} |
261 |
|
|
65 |
– |
/* |
66 |
– |
* tests for interrupted exception on a timed wait |
67 |
– |
* |
68 |
– |
*/ |
69 |
– |
|
262 |
|
|
263 |
< |
public void testInterruptedException2(){ |
263 |
> |
/** |
264 |
> |
* TryLock on a locked lock fails |
265 |
> |
*/ |
266 |
> |
public void testTryLockWhenLocked() { |
267 |
|
final ReentrantLock lock = new ReentrantLock(); |
268 |
|
lock.lock(); |
269 |
|
Thread t = new Thread(new Runnable() { |
270 |
< |
public void run(){ |
271 |
< |
try{ |
77 |
< |
lock.tryLock(1000,TimeUnit.MILLISECONDS); |
78 |
< |
fail("should throw"); |
79 |
< |
}catch(InterruptedException sucess){} |
270 |
> |
public void run() { |
271 |
> |
threadAssertFalse(lock.tryLock()); |
272 |
|
} |
273 |
|
}); |
274 |
< |
t.start(); |
275 |
< |
t.interrupt(); |
276 |
< |
} |
274 |
> |
try { |
275 |
> |
t.start(); |
276 |
> |
t.join(); |
277 |
> |
lock.unlock(); |
278 |
> |
} catch(Exception e){ |
279 |
> |
unexpectedException(); |
280 |
> |
} |
281 |
> |
} |
282 |
|
|
283 |
+ |
/** |
284 |
+ |
* Timed tryLock on a locked lock times out |
285 |
+ |
*/ |
286 |
+ |
public void testTryLock_Timeout() { |
287 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
288 |
+ |
lock.lock(); |
289 |
+ |
Thread t = new Thread(new Runnable() { |
290 |
+ |
public void run() { |
291 |
+ |
try { |
292 |
+ |
threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
293 |
+ |
} catch (Exception ex) { |
294 |
+ |
threadUnexpectedException(); |
295 |
+ |
} |
296 |
+ |
} |
297 |
+ |
}); |
298 |
+ |
try { |
299 |
+ |
t.start(); |
300 |
+ |
t.join(); |
301 |
+ |
lock.unlock(); |
302 |
+ |
} catch(Exception e){ |
303 |
+ |
unexpectedException(); |
304 |
+ |
} |
305 |
+ |
} |
306 |
|
|
307 |
+ |
/** |
308 |
+ |
* getHoldCount returns number of recursive holds |
309 |
+ |
*/ |
310 |
|
public void testGetHoldCount() { |
311 |
|
ReentrantLock lock = new ReentrantLock(); |
312 |
< |
for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) { |
312 |
> |
for(int i = 1; i <= SIZE; i++) { |
313 |
|
lock.lock(); |
314 |
|
assertEquals(i,lock.getHoldCount()); |
315 |
|
} |
316 |
< |
for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) { |
316 |
> |
for(int i = SIZE; i > 0; i--) { |
317 |
|
lock.unlock(); |
318 |
|
assertEquals(i-1,lock.getHoldCount()); |
319 |
|
} |
320 |
|
} |
321 |
|
|
322 |
|
|
323 |
< |
|
324 |
< |
|
323 |
> |
/** |
324 |
> |
* isLocked is true when locked and false when not |
325 |
> |
*/ |
326 |
|
public void testIsLocked() { |
327 |
|
final ReentrantLock lock = new ReentrantLock(); |
328 |
|
lock.lock(); |
333 |
|
public void run() { |
334 |
|
lock.lock(); |
335 |
|
try { |
336 |
< |
Thread.sleep(SHORT_DELAY_MS * 2); |
336 |
> |
Thread.sleep(SMALL_DELAY_MS); |
337 |
|
} |
338 |
< |
catch(Exception e) {} |
338 |
> |
catch(Exception e) { |
339 |
> |
threadUnexpectedException(); |
340 |
> |
} |
341 |
|
lock.unlock(); |
342 |
|
} |
343 |
|
}); |
344 |
< |
try{ |
344 |
> |
try { |
345 |
|
t.start(); |
346 |
|
Thread.sleep(SHORT_DELAY_MS); |
347 |
|
assertTrue(lock.isLocked()); |
348 |
|
t.join(); |
349 |
|
assertFalse(lock.isLocked()); |
350 |
|
} catch(Exception e){ |
351 |
< |
fail("unexpected exception"); |
351 |
> |
unexpectedException(); |
352 |
> |
} |
353 |
> |
} |
354 |
> |
|
355 |
> |
|
356 |
> |
/** |
357 |
> |
* lockInterruptibly is interruptible. |
358 |
> |
*/ |
359 |
> |
public void testLockInterruptibly1() { |
360 |
> |
final ReentrantLock lock = new ReentrantLock(); |
361 |
> |
lock.lock(); |
362 |
> |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
363 |
> |
try { |
364 |
> |
t.start(); |
365 |
> |
t.interrupt(); |
366 |
> |
lock.unlock(); |
367 |
> |
t.join(); |
368 |
> |
} catch(Exception e){ |
369 |
> |
unexpectedException(); |
370 |
> |
} |
371 |
> |
} |
372 |
> |
|
373 |
> |
/** |
374 |
> |
* lockInterruptibly succeeds when unlocked, else is interruptible |
375 |
> |
*/ |
376 |
> |
public void testLockInterruptibly2() { |
377 |
> |
final ReentrantLock lock = new ReentrantLock(); |
378 |
> |
try { |
379 |
> |
lock.lockInterruptibly(); |
380 |
> |
} catch(Exception e) { |
381 |
> |
unexpectedException(); |
382 |
> |
} |
383 |
> |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
384 |
> |
try { |
385 |
> |
t.start(); |
386 |
> |
t.interrupt(); |
387 |
> |
assertTrue(lock.isLocked()); |
388 |
> |
assertTrue(lock.isHeldByCurrentThread()); |
389 |
> |
t.join(); |
390 |
> |
} catch(Exception e){ |
391 |
> |
unexpectedException(); |
392 |
> |
} |
393 |
> |
} |
394 |
> |
|
395 |
> |
/** |
396 |
> |
* Calling await without holding lock throws IllegalMonitorStateException |
397 |
> |
*/ |
398 |
> |
public void testAwait_IllegalMonitor() { |
399 |
> |
final ReentrantLock lock = new ReentrantLock(); |
400 |
> |
final Condition c = lock.newCondition(); |
401 |
> |
try { |
402 |
> |
c.await(); |
403 |
> |
shouldThrow(); |
404 |
> |
} |
405 |
> |
catch (IllegalMonitorStateException success) { |
406 |
|
} |
407 |
+ |
catch (Exception ex) { |
408 |
+ |
unexpectedException(); |
409 |
+ |
} |
410 |
+ |
} |
411 |
+ |
|
412 |
+ |
/** |
413 |
+ |
* Calling signal without holding lock throws IllegalMonitorStateException |
414 |
+ |
*/ |
415 |
+ |
public void testSignal_IllegalMonitor() { |
416 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
417 |
+ |
final Condition c = lock.newCondition(); |
418 |
+ |
try { |
419 |
+ |
c.signal(); |
420 |
+ |
shouldThrow(); |
421 |
+ |
} |
422 |
+ |
catch (IllegalMonitorStateException success) { |
423 |
+ |
} |
424 |
+ |
catch (Exception ex) { |
425 |
+ |
unexpectedException(); |
426 |
+ |
} |
427 |
+ |
} |
428 |
+ |
|
429 |
+ |
/** |
430 |
+ |
* awaitNanos without a signal times out |
431 |
+ |
*/ |
432 |
+ |
public void testAwaitNanos_Timeout() { |
433 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
434 |
+ |
final Condition c = lock.newCondition(); |
435 |
+ |
try { |
436 |
+ |
lock.lock(); |
437 |
+ |
long t = c.awaitNanos(100); |
438 |
+ |
assertTrue(t <= 0); |
439 |
+ |
lock.unlock(); |
440 |
+ |
} |
441 |
+ |
catch (Exception ex) { |
442 |
+ |
unexpectedException(); |
443 |
+ |
} |
444 |
+ |
} |
445 |
|
|
446 |
+ |
/** |
447 |
+ |
* timed await without a signal times out |
448 |
+ |
*/ |
449 |
+ |
public void testAwait_Timeout() { |
450 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
451 |
+ |
final Condition c = lock.newCondition(); |
452 |
+ |
try { |
453 |
+ |
lock.lock(); |
454 |
+ |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
455 |
+ |
lock.unlock(); |
456 |
+ |
} |
457 |
+ |
catch (Exception ex) { |
458 |
+ |
unexpectedException(); |
459 |
+ |
} |
460 |
|
} |
461 |
|
|
462 |
< |
/* |
463 |
< |
* 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 |
462 |
> |
/** |
463 |
> |
* awaitUntil without a signal times out |
464 |
|
*/ |
465 |
+ |
public void testAwaitUntil_Timeout() { |
466 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
467 |
+ |
final Condition c = lock.newCondition(); |
468 |
+ |
try { |
469 |
+ |
lock.lock(); |
470 |
+ |
java.util.Date d = new java.util.Date(); |
471 |
+ |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
472 |
+ |
lock.unlock(); |
473 |
+ |
} |
474 |
+ |
catch (Exception ex) { |
475 |
+ |
unexpectedException(); |
476 |
+ |
} |
477 |
+ |
} |
478 |
|
|
479 |
< |
public void testLockedInterruptibly() { |
479 |
> |
/** |
480 |
> |
* await returns when signalled |
481 |
> |
*/ |
482 |
> |
public void testAwait() { |
483 |
|
final ReentrantLock lock = new ReentrantLock(); |
484 |
< |
try {lock.lockInterruptibly();} catch(Exception e) {} |
484 |
> |
final Condition c = lock.newCondition(); |
485 |
|
Thread t = new Thread(new Runnable() { |
486 |
|
public void run() { |
487 |
|
try { |
488 |
< |
lock.lockInterruptibly(); |
489 |
< |
fail("Failed to generate an Interrupted Exception"); |
488 |
> |
lock.lock(); |
489 |
> |
c.await(); |
490 |
> |
lock.unlock(); |
491 |
|
} |
492 |
< |
catch(InterruptedException e) {} |
492 |
> |
catch(InterruptedException e) { |
493 |
> |
threadUnexpectedException(); |
494 |
> |
} |
495 |
|
} |
496 |
|
}); |
497 |
< |
t.start(); |
498 |
< |
t.interrupt(); |
499 |
< |
assertTrue(lock.isLocked()); |
500 |
< |
assertTrue(lock.isHeldByCurrentThread()); |
497 |
> |
|
498 |
> |
try { |
499 |
> |
t.start(); |
500 |
> |
Thread.sleep(SHORT_DELAY_MS); |
501 |
> |
lock.lock(); |
502 |
> |
c.signal(); |
503 |
> |
lock.unlock(); |
504 |
> |
t.join(SHORT_DELAY_MS); |
505 |
> |
assertFalse(t.isAlive()); |
506 |
> |
} |
507 |
> |
catch (Exception ex) { |
508 |
> |
unexpectedException(); |
509 |
> |
} |
510 |
> |
} |
511 |
> |
|
512 |
> |
/** |
513 |
> |
* hasWaiters throws NPE if null |
514 |
> |
*/ |
515 |
> |
public void testHasWaitersNPE() { |
516 |
> |
final ReentrantLock lock = new ReentrantLock(); |
517 |
> |
try { |
518 |
> |
lock.hasWaiters(null); |
519 |
> |
shouldThrow(); |
520 |
> |
} catch (NullPointerException success) { |
521 |
> |
} catch (Exception ex) { |
522 |
> |
unexpectedException(); |
523 |
> |
} |
524 |
> |
} |
525 |
> |
|
526 |
> |
/** |
527 |
> |
* getWaitQueueLength throws NPE if null |
528 |
> |
*/ |
529 |
> |
public void testGetWaitQueueLengthNPE() { |
530 |
> |
final ReentrantLock lock = new ReentrantLock(); |
531 |
> |
try { |
532 |
> |
lock.getWaitQueueLength(null); |
533 |
> |
shouldThrow(); |
534 |
> |
} catch (NullPointerException success) { |
535 |
> |
} catch (Exception ex) { |
536 |
> |
unexpectedException(); |
537 |
> |
} |
538 |
> |
} |
539 |
> |
|
540 |
> |
|
541 |
> |
/** |
542 |
> |
* getWaitingThreads throws NPE if null |
543 |
> |
*/ |
544 |
> |
public void testGetWaitingThreadsNPE() { |
545 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
546 |
> |
try { |
547 |
> |
lock.getWaitingThreads(null); |
548 |
> |
shouldThrow(); |
549 |
> |
} catch (NullPointerException success) { |
550 |
> |
} catch (Exception ex) { |
551 |
> |
unexpectedException(); |
552 |
> |
} |
553 |
> |
} |
554 |
> |
|
555 |
> |
|
556 |
> |
/** |
557 |
> |
* hasWaiters throws IAE if not owned |
558 |
> |
*/ |
559 |
> |
public void testHasWaitersIAE() { |
560 |
> |
final ReentrantLock lock = new ReentrantLock(); |
561 |
> |
final Condition c = (lock.newCondition()); |
562 |
> |
final ReentrantLock lock2 = new ReentrantLock(); |
563 |
> |
try { |
564 |
> |
lock2.hasWaiters(c); |
565 |
> |
shouldThrow(); |
566 |
> |
} catch (IllegalArgumentException success) { |
567 |
> |
} catch (Exception ex) { |
568 |
> |
unexpectedException(); |
569 |
> |
} |
570 |
> |
} |
571 |
> |
|
572 |
> |
/** |
573 |
> |
* hasWaiters throws IMSE if not locked |
574 |
> |
*/ |
575 |
> |
public void testHasWaitersIMSE() { |
576 |
> |
final ReentrantLock lock = new ReentrantLock(); |
577 |
> |
final Condition c = (lock.newCondition()); |
578 |
> |
try { |
579 |
> |
lock.hasWaiters(c); |
580 |
> |
shouldThrow(); |
581 |
> |
} catch (IllegalMonitorStateException success) { |
582 |
> |
} catch (Exception ex) { |
583 |
> |
unexpectedException(); |
584 |
> |
} |
585 |
> |
} |
586 |
> |
|
587 |
> |
|
588 |
> |
/** |
589 |
> |
* getWaitQueueLength throws IAE if not owned |
590 |
> |
*/ |
591 |
> |
public void testGetWaitQueueLengthIAE() { |
592 |
> |
final ReentrantLock lock = new ReentrantLock(); |
593 |
> |
final Condition c = (lock.newCondition()); |
594 |
> |
final ReentrantLock lock2 = new ReentrantLock(); |
595 |
> |
try { |
596 |
> |
lock2.getWaitQueueLength(c); |
597 |
> |
shouldThrow(); |
598 |
> |
} catch (IllegalArgumentException success) { |
599 |
> |
} catch (Exception ex) { |
600 |
> |
unexpectedException(); |
601 |
> |
} |
602 |
> |
} |
603 |
> |
|
604 |
> |
/** |
605 |
> |
* getWaitQueueLength throws IMSE if not locked |
606 |
> |
*/ |
607 |
> |
public void testGetWaitQueueLengthIMSE() { |
608 |
> |
final ReentrantLock lock = new ReentrantLock(); |
609 |
> |
final Condition c = (lock.newCondition()); |
610 |
> |
try { |
611 |
> |
lock.getWaitQueueLength(c); |
612 |
> |
shouldThrow(); |
613 |
> |
} catch (IllegalMonitorStateException success) { |
614 |
> |
} catch (Exception ex) { |
615 |
> |
unexpectedException(); |
616 |
> |
} |
617 |
> |
} |
618 |
> |
|
619 |
> |
|
620 |
> |
/** |
621 |
> |
* getWaitingThreads throws IAE if not owned |
622 |
> |
*/ |
623 |
> |
public void testGetWaitingThreadsIAE() { |
624 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
625 |
> |
final Condition c = (lock.newCondition()); |
626 |
> |
final PublicReentrantLock lock2 = new PublicReentrantLock(); |
627 |
> |
try { |
628 |
> |
lock2.getWaitingThreads(c); |
629 |
> |
shouldThrow(); |
630 |
> |
} catch (IllegalArgumentException success) { |
631 |
> |
} catch (Exception ex) { |
632 |
> |
unexpectedException(); |
633 |
> |
} |
634 |
> |
} |
635 |
> |
|
636 |
> |
/** |
637 |
> |
* getWaitingThreads throws IMSE if not locked |
638 |
> |
*/ |
639 |
> |
public void testGetWaitingThreadsIMSE() { |
640 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
641 |
> |
final Condition c = (lock.newCondition()); |
642 |
> |
try { |
643 |
> |
lock.getWaitingThreads(c); |
644 |
> |
shouldThrow(); |
645 |
> |
} catch (IllegalMonitorStateException success) { |
646 |
> |
} catch (Exception ex) { |
647 |
> |
unexpectedException(); |
648 |
> |
} |
649 |
> |
} |
650 |
> |
|
651 |
> |
|
652 |
> |
|
653 |
> |
/** |
654 |
> |
* hasWaiters returns true when a thread is waiting, else false |
655 |
> |
*/ |
656 |
> |
public void testHasWaiters() { |
657 |
> |
final ReentrantLock lock = new ReentrantLock(); |
658 |
> |
final Condition c = lock.newCondition(); |
659 |
> |
Thread t = new Thread(new Runnable() { |
660 |
> |
public void run() { |
661 |
> |
try { |
662 |
> |
lock.lock(); |
663 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
664 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
665 |
> |
c.await(); |
666 |
> |
lock.unlock(); |
667 |
> |
} |
668 |
> |
catch(InterruptedException e) { |
669 |
> |
threadUnexpectedException(); |
670 |
> |
} |
671 |
> |
} |
672 |
> |
}); |
673 |
> |
|
674 |
> |
try { |
675 |
> |
t.start(); |
676 |
> |
Thread.sleep(SHORT_DELAY_MS); |
677 |
> |
lock.lock(); |
678 |
> |
assertTrue(lock.hasWaiters(c)); |
679 |
> |
assertEquals(1, lock.getWaitQueueLength(c)); |
680 |
> |
c.signal(); |
681 |
> |
lock.unlock(); |
682 |
> |
Thread.sleep(SHORT_DELAY_MS); |
683 |
> |
lock.lock(); |
684 |
> |
assertFalse(lock.hasWaiters(c)); |
685 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
686 |
> |
lock.unlock(); |
687 |
> |
t.join(SHORT_DELAY_MS); |
688 |
> |
assertFalse(t.isAlive()); |
689 |
> |
} |
690 |
> |
catch (Exception ex) { |
691 |
> |
unexpectedException(); |
692 |
> |
} |
693 |
> |
} |
694 |
> |
|
695 |
> |
/** |
696 |
> |
* getWaitQueueLength returns number of waiting threads |
697 |
> |
*/ |
698 |
> |
public void testGetWaitQueueLength() { |
699 |
> |
final ReentrantLock lock = new ReentrantLock(); |
700 |
> |
final Condition c = lock.newCondition(); |
701 |
> |
Thread t1 = new Thread(new Runnable() { |
702 |
> |
public void run() { |
703 |
> |
try { |
704 |
> |
lock.lock(); |
705 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
706 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
707 |
> |
c.await(); |
708 |
> |
lock.unlock(); |
709 |
> |
} |
710 |
> |
catch(InterruptedException e) { |
711 |
> |
threadUnexpectedException(); |
712 |
> |
} |
713 |
> |
} |
714 |
> |
}); |
715 |
> |
|
716 |
> |
Thread t2 = new Thread(new Runnable() { |
717 |
> |
public void run() { |
718 |
> |
try { |
719 |
> |
lock.lock(); |
720 |
> |
threadAssertTrue(lock.hasWaiters(c)); |
721 |
> |
threadAssertEquals(1, lock.getWaitQueueLength(c)); |
722 |
> |
c.await(); |
723 |
> |
lock.unlock(); |
724 |
> |
} |
725 |
> |
catch(InterruptedException e) { |
726 |
> |
threadUnexpectedException(); |
727 |
> |
} |
728 |
> |
} |
729 |
> |
}); |
730 |
> |
|
731 |
> |
try { |
732 |
> |
t1.start(); |
733 |
> |
Thread.sleep(SHORT_DELAY_MS); |
734 |
> |
t2.start(); |
735 |
> |
Thread.sleep(SHORT_DELAY_MS); |
736 |
> |
lock.lock(); |
737 |
> |
assertTrue(lock.hasWaiters(c)); |
738 |
> |
assertEquals(2, lock.getWaitQueueLength(c)); |
739 |
> |
c.signalAll(); |
740 |
> |
lock.unlock(); |
741 |
> |
Thread.sleep(SHORT_DELAY_MS); |
742 |
> |
lock.lock(); |
743 |
> |
assertFalse(lock.hasWaiters(c)); |
744 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
745 |
> |
lock.unlock(); |
746 |
> |
t1.join(SHORT_DELAY_MS); |
747 |
> |
t2.join(SHORT_DELAY_MS); |
748 |
> |
assertFalse(t1.isAlive()); |
749 |
> |
assertFalse(t2.isAlive()); |
750 |
> |
} |
751 |
> |
catch (Exception ex) { |
752 |
> |
unexpectedException(); |
753 |
> |
} |
754 |
> |
} |
755 |
> |
|
756 |
> |
/** |
757 |
> |
* getWaitingThreads returns only and all waiting threads |
758 |
> |
*/ |
759 |
> |
public void testGetWaitingThreads() { |
760 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
761 |
> |
final Condition c = lock.newCondition(); |
762 |
> |
Thread t1 = new Thread(new Runnable() { |
763 |
> |
public void run() { |
764 |
> |
try { |
765 |
> |
lock.lock(); |
766 |
> |
threadAssertTrue(lock.getWaitingThreads(c).isEmpty()); |
767 |
> |
c.await(); |
768 |
> |
lock.unlock(); |
769 |
> |
} |
770 |
> |
catch(InterruptedException e) { |
771 |
> |
threadUnexpectedException(); |
772 |
> |
} |
773 |
> |
} |
774 |
> |
}); |
775 |
> |
|
776 |
> |
Thread t2 = new Thread(new Runnable() { |
777 |
> |
public void run() { |
778 |
> |
try { |
779 |
> |
lock.lock(); |
780 |
> |
threadAssertFalse(lock.getWaitingThreads(c).isEmpty()); |
781 |
> |
c.await(); |
782 |
> |
lock.unlock(); |
783 |
> |
} |
784 |
> |
catch(InterruptedException e) { |
785 |
> |
threadUnexpectedException(); |
786 |
> |
} |
787 |
> |
} |
788 |
> |
}); |
789 |
> |
|
790 |
> |
try { |
791 |
> |
lock.lock(); |
792 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
793 |
> |
lock.unlock(); |
794 |
> |
t1.start(); |
795 |
> |
Thread.sleep(SHORT_DELAY_MS); |
796 |
> |
t2.start(); |
797 |
> |
Thread.sleep(SHORT_DELAY_MS); |
798 |
> |
lock.lock(); |
799 |
> |
assertTrue(lock.hasWaiters(c)); |
800 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
801 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
802 |
> |
c.signalAll(); |
803 |
> |
lock.unlock(); |
804 |
> |
Thread.sleep(SHORT_DELAY_MS); |
805 |
> |
lock.lock(); |
806 |
> |
assertFalse(lock.hasWaiters(c)); |
807 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
808 |
> |
lock.unlock(); |
809 |
> |
t1.join(SHORT_DELAY_MS); |
810 |
> |
t2.join(SHORT_DELAY_MS); |
811 |
> |
assertFalse(t1.isAlive()); |
812 |
> |
assertFalse(t2.isAlive()); |
813 |
> |
} |
814 |
> |
catch (Exception ex) { |
815 |
> |
unexpectedException(); |
816 |
> |
} |
817 |
> |
} |
818 |
> |
|
819 |
> |
|
820 |
> |
|
821 |
> |
/** |
822 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
823 |
> |
*/ |
824 |
> |
public void testAwaitUninterruptibly() { |
825 |
> |
final ReentrantLock lock = new ReentrantLock(); |
826 |
> |
final Condition c = lock.newCondition(); |
827 |
> |
Thread t = new Thread(new Runnable() { |
828 |
> |
public void run() { |
829 |
> |
lock.lock(); |
830 |
> |
c.awaitUninterruptibly(); |
831 |
> |
lock.unlock(); |
832 |
> |
} |
833 |
> |
}); |
834 |
> |
|
835 |
> |
try { |
836 |
> |
t.start(); |
837 |
> |
Thread.sleep(SHORT_DELAY_MS); |
838 |
> |
t.interrupt(); |
839 |
> |
lock.lock(); |
840 |
> |
c.signal(); |
841 |
> |
lock.unlock(); |
842 |
> |
assert(t.isInterrupted()); |
843 |
> |
t.join(SHORT_DELAY_MS); |
844 |
> |
assertFalse(t.isAlive()); |
845 |
> |
} |
846 |
> |
catch (Exception ex) { |
847 |
> |
unexpectedException(); |
848 |
> |
} |
849 |
> |
} |
850 |
> |
|
851 |
> |
/** |
852 |
> |
* await is interruptible |
853 |
> |
*/ |
854 |
> |
public void testAwait_Interrupt() { |
855 |
> |
final ReentrantLock lock = new ReentrantLock(); |
856 |
> |
final Condition c = lock.newCondition(); |
857 |
> |
Thread t = new Thread(new Runnable() { |
858 |
> |
public void run() { |
859 |
> |
try { |
860 |
> |
lock.lock(); |
861 |
> |
c.await(); |
862 |
> |
lock.unlock(); |
863 |
> |
threadShouldThrow(); |
864 |
> |
} |
865 |
> |
catch(InterruptedException success) { |
866 |
> |
} |
867 |
> |
} |
868 |
> |
}); |
869 |
> |
|
870 |
> |
try { |
871 |
> |
t.start(); |
872 |
> |
Thread.sleep(SHORT_DELAY_MS); |
873 |
> |
t.interrupt(); |
874 |
> |
t.join(SHORT_DELAY_MS); |
875 |
> |
assertFalse(t.isAlive()); |
876 |
> |
} |
877 |
> |
catch (Exception ex) { |
878 |
> |
unexpectedException(); |
879 |
> |
} |
880 |
> |
} |
881 |
> |
|
882 |
> |
/** |
883 |
> |
* awaitNanos is interruptible |
884 |
> |
*/ |
885 |
> |
public void testAwaitNanos_Interrupt() { |
886 |
> |
final ReentrantLock lock = new ReentrantLock(); |
887 |
> |
final Condition c = lock.newCondition(); |
888 |
> |
Thread t = new Thread(new Runnable() { |
889 |
> |
public void run() { |
890 |
> |
try { |
891 |
> |
lock.lock(); |
892 |
> |
c.awaitNanos(1000 * 1000 * 1000); // 1 sec |
893 |
> |
lock.unlock(); |
894 |
> |
threadShouldThrow(); |
895 |
> |
} |
896 |
> |
catch(InterruptedException success) { |
897 |
> |
} |
898 |
> |
} |
899 |
> |
}); |
900 |
> |
|
901 |
> |
try { |
902 |
> |
t.start(); |
903 |
> |
Thread.sleep(SHORT_DELAY_MS); |
904 |
> |
t.interrupt(); |
905 |
> |
t.join(SHORT_DELAY_MS); |
906 |
> |
assertFalse(t.isAlive()); |
907 |
> |
} |
908 |
> |
catch (Exception ex) { |
909 |
> |
unexpectedException(); |
910 |
> |
} |
911 |
> |
} |
912 |
> |
|
913 |
> |
/** |
914 |
> |
* awaitUntil is interruptible |
915 |
> |
*/ |
916 |
> |
public void testAwaitUntil_Interrupt() { |
917 |
> |
final ReentrantLock lock = new ReentrantLock(); |
918 |
> |
final Condition c = lock.newCondition(); |
919 |
> |
Thread t = new Thread(new Runnable() { |
920 |
> |
public void run() { |
921 |
> |
try { |
922 |
> |
lock.lock(); |
923 |
> |
java.util.Date d = new java.util.Date(); |
924 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
925 |
> |
lock.unlock(); |
926 |
> |
threadShouldThrow(); |
927 |
> |
} |
928 |
> |
catch(InterruptedException success) { |
929 |
> |
} |
930 |
> |
} |
931 |
> |
}); |
932 |
> |
|
933 |
> |
try { |
934 |
> |
t.start(); |
935 |
> |
Thread.sleep(SHORT_DELAY_MS); |
936 |
> |
t.interrupt(); |
937 |
> |
t.join(SHORT_DELAY_MS); |
938 |
> |
assertFalse(t.isAlive()); |
939 |
> |
} |
940 |
> |
catch (Exception ex) { |
941 |
> |
unexpectedException(); |
942 |
> |
} |
943 |
> |
} |
944 |
> |
|
945 |
> |
/** |
946 |
> |
* signalAll wakes up all threads |
947 |
> |
*/ |
948 |
> |
public void testSignalAll() { |
949 |
> |
final ReentrantLock lock = new ReentrantLock(); |
950 |
> |
final Condition c = lock.newCondition(); |
951 |
> |
Thread t1 = new Thread(new Runnable() { |
952 |
> |
public void run() { |
953 |
> |
try { |
954 |
> |
lock.lock(); |
955 |
> |
c.await(); |
956 |
> |
lock.unlock(); |
957 |
> |
} |
958 |
> |
catch(InterruptedException e) { |
959 |
> |
threadUnexpectedException(); |
960 |
> |
} |
961 |
> |
} |
962 |
> |
}); |
963 |
> |
|
964 |
> |
Thread t2 = new Thread(new Runnable() { |
965 |
> |
public void run() { |
966 |
> |
try { |
967 |
> |
lock.lock(); |
968 |
> |
c.await(); |
969 |
> |
lock.unlock(); |
970 |
> |
} |
971 |
> |
catch(InterruptedException e) { |
972 |
> |
threadUnexpectedException(); |
973 |
> |
} |
974 |
> |
} |
975 |
> |
}); |
976 |
> |
|
977 |
> |
try { |
978 |
> |
t1.start(); |
979 |
> |
t2.start(); |
980 |
> |
Thread.sleep(SHORT_DELAY_MS); |
981 |
> |
lock.lock(); |
982 |
> |
c.signalAll(); |
983 |
> |
lock.unlock(); |
984 |
> |
t1.join(SHORT_DELAY_MS); |
985 |
> |
t2.join(SHORT_DELAY_MS); |
986 |
> |
assertFalse(t1.isAlive()); |
987 |
> |
assertFalse(t2.isAlive()); |
988 |
> |
} |
989 |
> |
catch (Exception ex) { |
990 |
> |
unexpectedException(); |
991 |
> |
} |
992 |
> |
} |
993 |
> |
|
994 |
> |
/** |
995 |
> |
* A serialized lock deserializes as unlocked |
996 |
> |
*/ |
997 |
> |
public void testSerialization() { |
998 |
> |
ReentrantLock l = new ReentrantLock(); |
999 |
> |
l.lock(); |
1000 |
> |
l.unlock(); |
1001 |
> |
|
1002 |
> |
try { |
1003 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
1004 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
1005 |
> |
out.writeObject(l); |
1006 |
> |
out.close(); |
1007 |
> |
|
1008 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
1009 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
1010 |
> |
ReentrantLock r = (ReentrantLock) in.readObject(); |
1011 |
> |
r.lock(); |
1012 |
> |
r.unlock(); |
1013 |
> |
} catch(Exception e){ |
1014 |
> |
e.printStackTrace(); |
1015 |
> |
unexpectedException(); |
1016 |
> |
} |
1017 |
|
} |
155 |
– |
|
1018 |
|
|
1019 |
|
} |