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dl |
1.1 |
/* |
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dl |
1.12 |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* Expert Group and released to the public domain, as explained at |
4 |
jsr166 |
1.44 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
jsr166 |
1.28 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
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* Pat Fisher, Mike Judd. |
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dl |
1.1 |
*/ |
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import junit.framework.*; |
10 |
jsr166 |
1.56 |
import java.util.concurrent.atomic.AtomicBoolean; |
11 |
dl |
1.1 |
import java.util.concurrent.locks.*; |
12 |
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import java.util.concurrent.*; |
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jsr166 |
1.36 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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dl |
1.2 |
import java.io.*; |
15 |
dl |
1.6 |
import java.util.*; |
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dl |
1.1 |
|
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dl |
1.3 |
public class ReentrantReadWriteLockTest extends JSR166TestCase { |
18 |
dl |
1.1 |
public static void main(String[] args) { |
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jsr166 |
1.41 |
junit.textui.TestRunner.run(suite()); |
20 |
dl |
1.1 |
} |
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public static Test suite() { |
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jsr166 |
1.35 |
return new TestSuite(ReentrantReadWriteLockTest.class); |
23 |
dl |
1.1 |
} |
24 |
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25 |
dl |
1.6 |
/** |
26 |
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* A runnable calling lockInterruptibly |
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*/ |
28 |
jsr166 |
1.32 |
class InterruptibleLockRunnable extends CheckedRunnable { |
29 |
dl |
1.6 |
final ReentrantReadWriteLock lock; |
30 |
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InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
31 |
jsr166 |
1.32 |
public void realRun() throws InterruptedException { |
32 |
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lock.writeLock().lockInterruptibly(); |
33 |
dl |
1.6 |
} |
34 |
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} |
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36 |
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/** |
37 |
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* A runnable calling lockInterruptibly that expects to be |
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* interrupted |
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*/ |
40 |
jsr166 |
1.32 |
class InterruptedLockRunnable extends CheckedInterruptedRunnable { |
41 |
dl |
1.6 |
final ReentrantReadWriteLock lock; |
42 |
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InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
43 |
jsr166 |
1.32 |
public void realRun() throws InterruptedException { |
44 |
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lock.writeLock().lockInterruptibly(); |
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dl |
1.6 |
} |
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} |
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48 |
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/** |
49 |
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* Subclass to expose protected methods |
50 |
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*/ |
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static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock { |
52 |
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PublicReentrantReadWriteLock() { super(); } |
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jsr166 |
1.58 |
PublicReentrantReadWriteLock(boolean fair) { super(fair); } |
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public Thread getOwner() { |
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return super.getOwner(); |
56 |
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} |
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jsr166 |
1.28 |
public Collection<Thread> getQueuedThreads() { |
58 |
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return super.getQueuedThreads(); |
59 |
dl |
1.6 |
} |
60 |
jsr166 |
1.28 |
public Collection<Thread> getWaitingThreads(Condition c) { |
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return super.getWaitingThreads(c); |
62 |
dl |
1.13 |
} |
63 |
dl |
1.6 |
} |
64 |
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/** |
66 |
jsr166 |
1.54 |
* Releases write lock, checking that it had a hold count of 1. |
67 |
jsr166 |
1.46 |
*/ |
68 |
jsr166 |
1.58 |
void releaseWriteLock(PublicReentrantReadWriteLock lock) { |
69 |
jsr166 |
1.54 |
ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock(); |
70 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
71 |
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assertEquals(1, lock.getWriteHoldCount()); |
72 |
jsr166 |
1.54 |
writeLock.unlock(); |
73 |
jsr166 |
1.58 |
assertNotWriteLocked(lock); |
74 |
jsr166 |
1.46 |
} |
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/** |
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jsr166 |
1.56 |
* Spin-waits until lock.hasQueuedThread(t) becomes true. |
78 |
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*/ |
79 |
jsr166 |
1.58 |
void waitForQueuedThread(PublicReentrantReadWriteLock lock, Thread t) { |
80 |
jsr166 |
1.56 |
long startTime = System.nanoTime(); |
81 |
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while (!lock.hasQueuedThread(t)) { |
82 |
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if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
83 |
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throw new AssertionError("timed out"); |
84 |
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Thread.yield(); |
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} |
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jsr166 |
1.58 |
assertTrue(t.isAlive()); |
87 |
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assertTrue(lock.getOwner() != t); |
88 |
jsr166 |
1.56 |
} |
89 |
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90 |
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/** |
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* Checks that lock is not write-locked. |
92 |
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*/ |
93 |
jsr166 |
1.58 |
void assertNotWriteLocked(PublicReentrantReadWriteLock lock) { |
94 |
jsr166 |
1.56 |
assertFalse(lock.isWriteLocked()); |
95 |
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assertFalse(lock.isWriteLockedByCurrentThread()); |
96 |
jsr166 |
1.58 |
assertFalse(lock.writeLock().isHeldByCurrentThread()); |
97 |
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assertNull(lock.getOwner()); |
98 |
jsr166 |
1.56 |
assertEquals(0, lock.getWriteHoldCount()); |
99 |
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} |
100 |
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101 |
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/** |
102 |
jsr166 |
1.58 |
* Checks that lock is write-locked by the given thread. |
103 |
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*/ |
104 |
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void assertWriteLockedBy(PublicReentrantReadWriteLock lock, Thread t) { |
105 |
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assertTrue(lock.isWriteLocked()); |
106 |
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assertSame(t, lock.getOwner()); |
107 |
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assertEquals(t == Thread.currentThread(), |
108 |
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lock.isWriteLockedByCurrentThread()); |
109 |
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assertEquals(t == Thread.currentThread(), |
110 |
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lock.writeLock().isHeldByCurrentThread()); |
111 |
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assertEquals(t == Thread.currentThread(), |
112 |
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lock.getWriteHoldCount() > 0); |
113 |
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assertEquals(0, lock.getReadLockCount()); |
114 |
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} |
115 |
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116 |
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/** |
117 |
jsr166 |
1.56 |
* Checks that condition c has no waiters. |
118 |
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*/ |
119 |
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void assertHasNoWaiters(PublicReentrantReadWriteLock lock, Condition c) { |
120 |
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assertHasWaiters(lock, c, new Thread[] {}); |
121 |
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} |
122 |
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123 |
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/** |
124 |
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* Checks that condition c has exactly the given waiter threads. |
125 |
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*/ |
126 |
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void assertHasWaiters(PublicReentrantReadWriteLock lock, Condition c, |
127 |
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Thread... threads) { |
128 |
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lock.writeLock().lock(); |
129 |
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assertEquals(threads.length > 0, lock.hasWaiters(c)); |
130 |
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assertEquals(threads.length, lock.getWaitQueueLength(c)); |
131 |
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assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty()); |
132 |
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assertEquals(threads.length, lock.getWaitingThreads(c).size()); |
133 |
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assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)), |
134 |
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new HashSet<Thread>(Arrays.asList(threads))); |
135 |
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lock.writeLock().unlock(); |
136 |
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} |
137 |
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138 |
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/** |
139 |
dl |
1.6 |
* Constructor sets given fairness, and is in unlocked state |
140 |
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*/ |
141 |
jsr166 |
1.28 |
public void testConstructor() { |
142 |
jsr166 |
1.58 |
PublicReentrantReadWriteLock lock; |
143 |
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144 |
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lock = new PublicReentrantReadWriteLock(); |
145 |
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assertFalse(lock.isFair()); |
146 |
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assertNotWriteLocked(lock); |
147 |
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assertEquals(0, lock.getReadLockCount()); |
148 |
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149 |
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lock = new PublicReentrantReadWriteLock(true); |
150 |
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assertTrue(lock.isFair()); |
151 |
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assertNotWriteLocked(lock); |
152 |
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assertEquals(0, lock.getReadLockCount()); |
153 |
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154 |
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lock = new PublicReentrantReadWriteLock(false); |
155 |
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assertFalse(lock.isFair()); |
156 |
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assertNotWriteLocked(lock); |
157 |
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assertEquals(0, lock.getReadLockCount()); |
158 |
dl |
1.6 |
} |
159 |
dl |
1.1 |
|
160 |
dl |
1.5 |
/** |
161 |
dl |
1.4 |
* write-locking and read-locking an unlocked lock succeed |
162 |
dl |
1.1 |
*/ |
163 |
jsr166 |
1.28 |
public void testLock() { |
164 |
jsr166 |
1.58 |
PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
165 |
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assertNotWriteLocked(lock); |
166 |
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lock.writeLock().lock(); |
167 |
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assertWriteLockedBy(lock, Thread.currentThread()); |
168 |
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lock.writeLock().unlock(); |
169 |
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assertNotWriteLocked(lock); |
170 |
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assertEquals(0, lock.getReadLockCount()); |
171 |
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lock.readLock().lock(); |
172 |
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assertNotWriteLocked(lock); |
173 |
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assertEquals(1, lock.getReadLockCount()); |
174 |
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lock.readLock().unlock(); |
175 |
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assertNotWriteLocked(lock); |
176 |
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assertEquals(0, lock.getReadLockCount()); |
177 |
dl |
1.4 |
} |
178 |
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179 |
dl |
1.5 |
/** |
180 |
dl |
1.4 |
* locking an unlocked fair lock succeeds |
181 |
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*/ |
182 |
jsr166 |
1.28 |
public void testFairLock() { |
183 |
jsr166 |
1.58 |
PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true); |
184 |
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assertNotWriteLocked(lock); |
185 |
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lock.writeLock().lock(); |
186 |
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assertWriteLockedBy(lock, Thread.currentThread()); |
187 |
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lock.writeLock().unlock(); |
188 |
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assertNotWriteLocked(lock); |
189 |
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assertEquals(0, lock.getReadLockCount()); |
190 |
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lock.readLock().lock(); |
191 |
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assertNotWriteLocked(lock); |
192 |
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assertEquals(1, lock.getReadLockCount()); |
193 |
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lock.readLock().unlock(); |
194 |
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assertNotWriteLocked(lock); |
195 |
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assertEquals(0, lock.getReadLockCount()); |
196 |
dl |
1.2 |
} |
197 |
dl |
1.1 |
|
198 |
dl |
1.4 |
/** |
199 |
dl |
1.6 |
* getWriteHoldCount returns number of recursive holds |
200 |
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*/ |
201 |
dl |
1.23 |
public void testGetWriteHoldCount() { |
202 |
jsr166 |
1.35 |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
203 |
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for (int i = 1; i <= SIZE; i++) { |
204 |
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lock.writeLock().lock(); |
205 |
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assertEquals(i,lock.getWriteHoldCount()); |
206 |
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} |
207 |
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for (int i = SIZE; i > 0; i--) { |
208 |
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lock.writeLock().unlock(); |
209 |
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assertEquals(i-1,lock.getWriteHoldCount()); |
210 |
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} |
211 |
dl |
1.6 |
} |
212 |
dl |
1.23 |
|
213 |
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/** |
214 |
dl |
1.25 |
* WriteLock.getHoldCount returns number of recursive holds |
215 |
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*/ |
216 |
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public void testGetHoldCount() { |
217 |
jsr166 |
1.35 |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
218 |
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for (int i = 1; i <= SIZE; i++) { |
219 |
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lock.writeLock().lock(); |
220 |
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assertEquals(i,lock.writeLock().getHoldCount()); |
221 |
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} |
222 |
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for (int i = SIZE; i > 0; i--) { |
223 |
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lock.writeLock().unlock(); |
224 |
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assertEquals(i-1,lock.writeLock().getHoldCount()); |
225 |
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} |
226 |
dl |
1.25 |
} |
227 |
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228 |
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/** |
229 |
dl |
1.23 |
* getReadHoldCount returns number of recursive holds |
230 |
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*/ |
231 |
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public void testGetReadHoldCount() { |
232 |
jsr166 |
1.35 |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
233 |
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for (int i = 1; i <= SIZE; i++) { |
234 |
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lock.readLock().lock(); |
235 |
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assertEquals(i,lock.getReadHoldCount()); |
236 |
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} |
237 |
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for (int i = SIZE; i > 0; i--) { |
238 |
|
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lock.readLock().unlock(); |
239 |
|
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assertEquals(i-1,lock.getReadHoldCount()); |
240 |
|
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} |
241 |
dl |
1.23 |
} |
242 |
jsr166 |
1.28 |
|
243 |
dl |
1.6 |
/** |
244 |
dl |
1.4 |
* write-unlocking an unlocked lock throws IllegalMonitorStateException |
245 |
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*/ |
246 |
jsr166 |
1.56 |
public void testWriteUnlock_IllegalMonitorStateException() { |
247 |
jsr166 |
1.58 |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
248 |
jsr166 |
1.35 |
try { |
249 |
jsr166 |
1.58 |
lock.writeLock().unlock(); |
250 |
jsr166 |
1.35 |
shouldThrow(); |
251 |
|
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} catch (IllegalMonitorStateException success) {} |
252 |
dl |
1.4 |
} |
253 |
dl |
1.1 |
|
254 |
jsr166 |
1.56 |
/** |
255 |
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* read-unlocking an unlocked lock throws IllegalMonitorStateException |
256 |
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*/ |
257 |
|
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public void testReadUnlock_IllegalMonitorStateException() { |
258 |
jsr166 |
1.58 |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
259 |
jsr166 |
1.56 |
try { |
260 |
jsr166 |
1.58 |
lock.readLock().unlock(); |
261 |
jsr166 |
1.56 |
shouldThrow(); |
262 |
|
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} catch (IllegalMonitorStateException success) {} |
263 |
|
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} |
264 |
dl |
1.1 |
|
265 |
dl |
1.4 |
/** |
266 |
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* write-lockInterruptibly is interruptible |
267 |
|
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*/ |
268 |
jsr166 |
1.32 |
public void testWriteLockInterruptibly_Interrupted() throws Exception { |
269 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
270 |
jsr166 |
1.45 |
lock.writeLock().lock(); |
271 |
|
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Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
272 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
273 |
|
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lock.writeLock().lockInterruptibly(); |
274 |
|
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}}); |
275 |
jsr166 |
1.32 |
|
276 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t); |
277 |
jsr166 |
1.32 |
t.interrupt(); |
278 |
jsr166 |
1.56 |
awaitTermination(t); |
279 |
jsr166 |
1.54 |
releaseWriteLock(lock); |
280 |
jsr166 |
1.28 |
} |
281 |
dl |
1.1 |
|
282 |
dl |
1.4 |
/** |
283 |
dl |
1.15 |
* timed write-tryLock is interruptible |
284 |
dl |
1.4 |
*/ |
285 |
jsr166 |
1.32 |
public void testWriteTryLock_Interrupted() throws InterruptedException { |
286 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
287 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
288 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
289 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
290 |
jsr166 |
1.59 |
lock.writeLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS); |
291 |
jsr166 |
1.33 |
}}); |
292 |
jsr166 |
1.32 |
|
293 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t); |
294 |
jsr166 |
1.32 |
t.interrupt(); |
295 |
jsr166 |
1.56 |
awaitTermination(t); |
296 |
jsr166 |
1.54 |
releaseWriteLock(lock); |
297 |
dl |
1.2 |
} |
298 |
|
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|
299 |
dl |
1.4 |
/** |
300 |
|
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* read-lockInterruptibly is interruptible |
301 |
|
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*/ |
302 |
jsr166 |
1.32 |
public void testReadLockInterruptibly_Interrupted() throws InterruptedException { |
303 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
304 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
305 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
306 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
307 |
|
|
lock.readLock().lockInterruptibly(); |
308 |
|
|
}}); |
309 |
jsr166 |
1.32 |
|
310 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t); |
311 |
jsr166 |
1.32 |
t.interrupt(); |
312 |
jsr166 |
1.56 |
awaitTermination(t); |
313 |
jsr166 |
1.54 |
releaseWriteLock(lock); |
314 |
jsr166 |
1.28 |
} |
315 |
dl |
1.2 |
|
316 |
dl |
1.4 |
/** |
317 |
dl |
1.15 |
* timed read-tryLock is interruptible |
318 |
dl |
1.4 |
*/ |
319 |
jsr166 |
1.32 |
public void testReadTryLock_Interrupted() throws InterruptedException { |
320 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
321 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
322 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
323 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
324 |
jsr166 |
1.59 |
lock.readLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS); |
325 |
jsr166 |
1.33 |
}}); |
326 |
jsr166 |
1.32 |
|
327 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t); |
328 |
jsr166 |
1.32 |
t.interrupt(); |
329 |
jsr166 |
1.56 |
awaitTermination(t); |
330 |
jsr166 |
1.54 |
releaseWriteLock(lock); |
331 |
dl |
1.1 |
} |
332 |
|
|
|
333 |
dl |
1.4 |
/** |
334 |
dl |
1.15 |
* write-tryLock fails if locked |
335 |
dl |
1.4 |
*/ |
336 |
jsr166 |
1.32 |
public void testWriteTryLockWhenLocked() throws InterruptedException { |
337 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
338 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
339 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
340 |
jsr166 |
1.37 |
public void realRun() { |
341 |
jsr166 |
1.42 |
assertFalse(lock.writeLock().tryLock()); |
342 |
jsr166 |
1.37 |
}}); |
343 |
jsr166 |
1.32 |
|
344 |
jsr166 |
1.56 |
awaitTermination(t); |
345 |
jsr166 |
1.54 |
releaseWriteLock(lock); |
346 |
jsr166 |
1.28 |
} |
347 |
dl |
1.2 |
|
348 |
dl |
1.4 |
/** |
349 |
dl |
1.15 |
* read-tryLock fails if locked |
350 |
dl |
1.4 |
*/ |
351 |
jsr166 |
1.32 |
public void testReadTryLockWhenLocked() throws InterruptedException { |
352 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
353 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
354 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
355 |
jsr166 |
1.37 |
public void realRun() { |
356 |
jsr166 |
1.42 |
assertFalse(lock.readLock().tryLock()); |
357 |
jsr166 |
1.37 |
}}); |
358 |
jsr166 |
1.32 |
|
359 |
jsr166 |
1.56 |
awaitTermination(t); |
360 |
jsr166 |
1.54 |
releaseWriteLock(lock); |
361 |
jsr166 |
1.28 |
} |
362 |
dl |
1.2 |
|
363 |
dl |
1.4 |
/** |
364 |
|
|
* Multiple threads can hold a read lock when not write-locked |
365 |
|
|
*/ |
366 |
jsr166 |
1.32 |
public void testMultipleReadLocks() throws InterruptedException { |
367 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
368 |
|
|
lock.readLock().lock(); |
369 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
370 |
jsr166 |
1.37 |
public void realRun() { |
371 |
jsr166 |
1.42 |
assertTrue(lock.readLock().tryLock()); |
372 |
jsr166 |
1.37 |
lock.readLock().unlock(); |
373 |
|
|
}}); |
374 |
jsr166 |
1.32 |
|
375 |
jsr166 |
1.56 |
awaitTermination(t); |
376 |
jsr166 |
1.32 |
lock.readLock().unlock(); |
377 |
jsr166 |
1.28 |
} |
378 |
dl |
1.2 |
|
379 |
dl |
1.4 |
/** |
380 |
jsr166 |
1.58 |
* A writelock succeeds only after a reading thread unlocks |
381 |
|
|
*/ |
382 |
|
|
public void testWriteAfterReadLock() throws InterruptedException { |
383 |
|
|
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
384 |
|
|
lock.readLock().lock(); |
385 |
|
|
|
386 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
387 |
|
|
public void realRun() { |
388 |
|
|
assertEquals(1, lock.getReadLockCount()); |
389 |
|
|
lock.writeLock().lock(); |
390 |
|
|
assertEquals(0, lock.getReadLockCount()); |
391 |
|
|
lock.writeLock().unlock(); |
392 |
|
|
}}); |
393 |
|
|
waitForQueuedThread(lock, t); |
394 |
|
|
assertNotWriteLocked(lock); |
395 |
|
|
assertEquals(1, lock.getReadLockCount()); |
396 |
|
|
lock.readLock().unlock(); |
397 |
|
|
assertEquals(0, lock.getReadLockCount()); |
398 |
|
|
awaitTermination(t); |
399 |
|
|
assertNotWriteLocked(lock); |
400 |
|
|
} |
401 |
|
|
|
402 |
|
|
/** |
403 |
jsr166 |
1.56 |
* A writelock succeeds only after reading threads unlock |
404 |
dl |
1.4 |
*/ |
405 |
jsr166 |
1.32 |
public void testWriteAfterMultipleReadLocks() throws InterruptedException { |
406 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
407 |
|
|
lock.readLock().lock(); |
408 |
jsr166 |
1.35 |
lock.readLock().lock(); |
409 |
jsr166 |
1.45 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
410 |
jsr166 |
1.37 |
public void realRun() { |
411 |
|
|
lock.readLock().lock(); |
412 |
jsr166 |
1.58 |
assertEquals(3, lock.getReadLockCount()); |
413 |
jsr166 |
1.37 |
lock.readLock().unlock(); |
414 |
|
|
}}); |
415 |
jsr166 |
1.58 |
awaitTermination(t1); |
416 |
|
|
|
417 |
jsr166 |
1.45 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
418 |
jsr166 |
1.37 |
public void realRun() { |
419 |
jsr166 |
1.58 |
assertEquals(2, lock.getReadLockCount()); |
420 |
|
|
lock.writeLock().lock(); |
421 |
|
|
assertEquals(0, lock.getReadLockCount()); |
422 |
|
|
lock.writeLock().unlock(); |
423 |
|
|
}}); |
424 |
|
|
waitForQueuedThread(lock, t2); |
425 |
|
|
assertNotWriteLocked(lock); |
426 |
|
|
assertEquals(2, lock.getReadLockCount()); |
427 |
|
|
lock.readLock().unlock(); |
428 |
|
|
lock.readLock().unlock(); |
429 |
|
|
assertEquals(0, lock.getReadLockCount()); |
430 |
|
|
awaitTermination(t2); |
431 |
|
|
assertNotWriteLocked(lock); |
432 |
|
|
} |
433 |
|
|
|
434 |
|
|
/** |
435 |
|
|
* A thread that tries to acquire a fair read lock (non-reentrantly) |
436 |
|
|
* will block if there is a waiting writer thread. |
437 |
|
|
*/ |
438 |
|
|
public void testReaderWriterReaderFairFifo() throws InterruptedException { |
439 |
|
|
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true); |
440 |
|
|
final AtomicBoolean t1GotLock = new AtomicBoolean(false); |
441 |
|
|
|
442 |
|
|
lock.readLock().lock(); |
443 |
|
|
Thread t1 = newStartedThread(new CheckedRunnable() { |
444 |
|
|
public void realRun() { |
445 |
|
|
assertEquals(1, lock.getReadLockCount()); |
446 |
jsr166 |
1.37 |
lock.writeLock().lock(); |
447 |
jsr166 |
1.58 |
assertEquals(0, lock.getReadLockCount()); |
448 |
|
|
t1GotLock.set(true); |
449 |
jsr166 |
1.37 |
lock.writeLock().unlock(); |
450 |
|
|
}}); |
451 |
jsr166 |
1.58 |
waitForQueuedThread(lock, t1); |
452 |
|
|
|
453 |
|
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
454 |
|
|
public void realRun() { |
455 |
|
|
assertEquals(1, lock.getReadLockCount()); |
456 |
|
|
lock.readLock().lock(); |
457 |
|
|
assertEquals(1, lock.getReadLockCount()); |
458 |
|
|
assertTrue(t1GotLock.get()); |
459 |
|
|
lock.readLock().unlock(); |
460 |
|
|
}}); |
461 |
|
|
waitForQueuedThread(lock, t2); |
462 |
|
|
assertTrue(t1.isAlive()); |
463 |
|
|
assertNotWriteLocked(lock); |
464 |
|
|
assertEquals(1, lock.getReadLockCount()); |
465 |
dl |
1.57 |
lock.readLock().unlock(); |
466 |
jsr166 |
1.56 |
awaitTermination(t1); |
467 |
dl |
1.57 |
awaitTermination(t2); |
468 |
jsr166 |
1.56 |
assertNotWriteLocked(lock); |
469 |
jsr166 |
1.28 |
} |
470 |
dl |
1.2 |
|
471 |
dl |
1.4 |
/** |
472 |
jsr166 |
1.56 |
* Readlocks succeed only after a writing thread unlocks |
473 |
dl |
1.4 |
*/ |
474 |
jsr166 |
1.32 |
public void testReadAfterWriteLock() throws InterruptedException { |
475 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
476 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
477 |
jsr166 |
1.45 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
478 |
jsr166 |
1.37 |
public void realRun() { |
479 |
|
|
lock.readLock().lock(); |
480 |
|
|
lock.readLock().unlock(); |
481 |
|
|
}}); |
482 |
jsr166 |
1.45 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
483 |
jsr166 |
1.37 |
public void realRun() { |
484 |
|
|
lock.readLock().lock(); |
485 |
|
|
lock.readLock().unlock(); |
486 |
|
|
}}); |
487 |
dl |
1.2 |
|
488 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
489 |
|
|
waitForQueuedThread(lock, t2); |
490 |
jsr166 |
1.54 |
releaseWriteLock(lock); |
491 |
jsr166 |
1.56 |
awaitTermination(t1); |
492 |
|
|
awaitTermination(t2); |
493 |
jsr166 |
1.28 |
} |
494 |
dl |
1.2 |
|
495 |
dl |
1.20 |
/** |
496 |
|
|
* Read trylock succeeds if write locked by current thread |
497 |
|
|
*/ |
498 |
jsr166 |
1.28 |
public void testReadHoldingWriteLock() { |
499 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
500 |
|
|
lock.writeLock().lock(); |
501 |
dl |
1.20 |
assertTrue(lock.readLock().tryLock()); |
502 |
|
|
lock.readLock().unlock(); |
503 |
|
|
lock.writeLock().unlock(); |
504 |
jsr166 |
1.28 |
} |
505 |
dl |
1.20 |
|
506 |
|
|
/** |
507 |
|
|
* Read lock succeeds if write locked by current thread even if |
508 |
dl |
1.23 |
* other threads are waiting for readlock |
509 |
dl |
1.20 |
*/ |
510 |
jsr166 |
1.32 |
public void testReadHoldingWriteLock2() throws InterruptedException { |
511 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
512 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
513 |
jsr166 |
1.56 |
lock.readLock().lock(); |
514 |
|
|
lock.readLock().unlock(); |
515 |
|
|
|
516 |
jsr166 |
1.45 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
517 |
jsr166 |
1.37 |
public void realRun() { |
518 |
|
|
lock.readLock().lock(); |
519 |
|
|
lock.readLock().unlock(); |
520 |
|
|
}}); |
521 |
jsr166 |
1.45 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
522 |
jsr166 |
1.37 |
public void realRun() { |
523 |
|
|
lock.readLock().lock(); |
524 |
|
|
lock.readLock().unlock(); |
525 |
|
|
}}); |
526 |
dl |
1.20 |
|
527 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
528 |
|
|
waitForQueuedThread(lock, t2); |
529 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
530 |
jsr166 |
1.32 |
lock.readLock().lock(); |
531 |
|
|
lock.readLock().unlock(); |
532 |
jsr166 |
1.56 |
releaseWriteLock(lock); |
533 |
|
|
awaitTermination(t1); |
534 |
|
|
awaitTermination(t2); |
535 |
jsr166 |
1.28 |
} |
536 |
dl |
1.20 |
|
537 |
|
|
/** |
538 |
jsr166 |
1.43 |
* Read lock succeeds if write locked by current thread even if |
539 |
dl |
1.23 |
* other threads are waiting for writelock |
540 |
|
|
*/ |
541 |
jsr166 |
1.32 |
public void testReadHoldingWriteLock3() throws InterruptedException { |
542 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
543 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
544 |
jsr166 |
1.56 |
lock.readLock().lock(); |
545 |
|
|
lock.readLock().unlock(); |
546 |
|
|
|
547 |
jsr166 |
1.45 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
548 |
jsr166 |
1.37 |
public void realRun() { |
549 |
|
|
lock.writeLock().lock(); |
550 |
|
|
lock.writeLock().unlock(); |
551 |
|
|
}}); |
552 |
jsr166 |
1.45 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
553 |
jsr166 |
1.37 |
public void realRun() { |
554 |
|
|
lock.writeLock().lock(); |
555 |
|
|
lock.writeLock().unlock(); |
556 |
|
|
}}); |
557 |
dl |
1.23 |
|
558 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
559 |
|
|
waitForQueuedThread(lock, t2); |
560 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
561 |
jsr166 |
1.32 |
lock.readLock().lock(); |
562 |
|
|
lock.readLock().unlock(); |
563 |
jsr166 |
1.56 |
releaseWriteLock(lock); |
564 |
|
|
awaitTermination(t1); |
565 |
|
|
awaitTermination(t2); |
566 |
jsr166 |
1.28 |
} |
567 |
dl |
1.23 |
|
568 |
|
|
/** |
569 |
jsr166 |
1.43 |
* Write lock succeeds if write locked by current thread even if |
570 |
dl |
1.23 |
* other threads are waiting for writelock |
571 |
|
|
*/ |
572 |
jsr166 |
1.32 |
public void testWriteHoldingWriteLock4() throws InterruptedException { |
573 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
574 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
575 |
jsr166 |
1.56 |
lock.writeLock().lock(); |
576 |
|
|
lock.writeLock().unlock(); |
577 |
|
|
|
578 |
jsr166 |
1.45 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
579 |
jsr166 |
1.37 |
public void realRun() { |
580 |
|
|
lock.writeLock().lock(); |
581 |
|
|
lock.writeLock().unlock(); |
582 |
|
|
}}); |
583 |
jsr166 |
1.45 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
584 |
jsr166 |
1.37 |
public void realRun() { |
585 |
|
|
lock.writeLock().lock(); |
586 |
|
|
lock.writeLock().unlock(); |
587 |
|
|
}}); |
588 |
dl |
1.23 |
|
589 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
590 |
|
|
waitForQueuedThread(lock, t2); |
591 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
592 |
jsr166 |
1.56 |
assertEquals(1, lock.getWriteHoldCount()); |
593 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
594 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
595 |
jsr166 |
1.56 |
assertEquals(2, lock.getWriteHoldCount()); |
596 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
597 |
jsr166 |
1.56 |
releaseWriteLock(lock); |
598 |
|
|
awaitTermination(t1); |
599 |
|
|
awaitTermination(t2); |
600 |
jsr166 |
1.28 |
} |
601 |
dl |
1.23 |
|
602 |
|
|
/** |
603 |
dl |
1.20 |
* Fair Read trylock succeeds if write locked by current thread |
604 |
|
|
*/ |
605 |
jsr166 |
1.28 |
public void testReadHoldingWriteLockFair() { |
606 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
607 |
|
|
lock.writeLock().lock(); |
608 |
dl |
1.20 |
assertTrue(lock.readLock().tryLock()); |
609 |
|
|
lock.readLock().unlock(); |
610 |
|
|
lock.writeLock().unlock(); |
611 |
jsr166 |
1.28 |
} |
612 |
dl |
1.20 |
|
613 |
|
|
/** |
614 |
|
|
* Fair Read lock succeeds if write locked by current thread even if |
615 |
dl |
1.23 |
* other threads are waiting for readlock |
616 |
dl |
1.20 |
*/ |
617 |
jsr166 |
1.32 |
public void testReadHoldingWriteLockFair2() throws InterruptedException { |
618 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true); |
619 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
620 |
jsr166 |
1.56 |
lock.readLock().lock(); |
621 |
|
|
lock.readLock().unlock(); |
622 |
|
|
|
623 |
jsr166 |
1.45 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
624 |
jsr166 |
1.37 |
public void realRun() { |
625 |
|
|
lock.readLock().lock(); |
626 |
|
|
lock.readLock().unlock(); |
627 |
|
|
}}); |
628 |
jsr166 |
1.45 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
629 |
jsr166 |
1.37 |
public void realRun() { |
630 |
|
|
lock.readLock().lock(); |
631 |
|
|
lock.readLock().unlock(); |
632 |
|
|
}}); |
633 |
dl |
1.20 |
|
634 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
635 |
|
|
waitForQueuedThread(lock, t2); |
636 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
637 |
jsr166 |
1.32 |
lock.readLock().lock(); |
638 |
|
|
lock.readLock().unlock(); |
639 |
jsr166 |
1.56 |
releaseWriteLock(lock); |
640 |
|
|
awaitTermination(t1); |
641 |
|
|
awaitTermination(t2); |
642 |
jsr166 |
1.28 |
} |
643 |
dl |
1.20 |
|
644 |
dl |
1.4 |
/** |
645 |
dl |
1.23 |
* Fair Read lock succeeds if write locked by current thread even if |
646 |
|
|
* other threads are waiting for writelock |
647 |
|
|
*/ |
648 |
jsr166 |
1.32 |
public void testReadHoldingWriteLockFair3() throws InterruptedException { |
649 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true); |
650 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
651 |
jsr166 |
1.56 |
lock.readLock().lock(); |
652 |
|
|
lock.readLock().unlock(); |
653 |
|
|
|
654 |
jsr166 |
1.45 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
655 |
jsr166 |
1.37 |
public void realRun() { |
656 |
|
|
lock.writeLock().lock(); |
657 |
|
|
lock.writeLock().unlock(); |
658 |
|
|
}}); |
659 |
jsr166 |
1.45 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
660 |
jsr166 |
1.37 |
public void realRun() { |
661 |
|
|
lock.writeLock().lock(); |
662 |
|
|
lock.writeLock().unlock(); |
663 |
|
|
}}); |
664 |
dl |
1.23 |
|
665 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
666 |
|
|
waitForQueuedThread(lock, t2); |
667 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
668 |
jsr166 |
1.32 |
lock.readLock().lock(); |
669 |
|
|
lock.readLock().unlock(); |
670 |
jsr166 |
1.56 |
releaseWriteLock(lock); |
671 |
|
|
awaitTermination(t1); |
672 |
|
|
awaitTermination(t2); |
673 |
jsr166 |
1.28 |
} |
674 |
dl |
1.23 |
|
675 |
|
|
/** |
676 |
|
|
* Fair Write lock succeeds if write locked by current thread even if |
677 |
|
|
* other threads are waiting for writelock |
678 |
|
|
*/ |
679 |
jsr166 |
1.32 |
public void testWriteHoldingWriteLockFair4() throws InterruptedException { |
680 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true); |
681 |
jsr166 |
1.35 |
lock.writeLock().lock(); |
682 |
jsr166 |
1.45 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
683 |
jsr166 |
1.37 |
public void realRun() { |
684 |
|
|
lock.writeLock().lock(); |
685 |
|
|
lock.writeLock().unlock(); |
686 |
|
|
}}); |
687 |
jsr166 |
1.45 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
688 |
jsr166 |
1.37 |
public void realRun() { |
689 |
|
|
lock.writeLock().lock(); |
690 |
|
|
lock.writeLock().unlock(); |
691 |
|
|
}}); |
692 |
dl |
1.23 |
|
693 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
694 |
|
|
waitForQueuedThread(lock, t2); |
695 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
696 |
jsr166 |
1.42 |
assertEquals(1, lock.getWriteHoldCount()); |
697 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
698 |
jsr166 |
1.42 |
assertEquals(2, lock.getWriteHoldCount()); |
699 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
700 |
|
|
lock.writeLock().lock(); |
701 |
|
|
lock.writeLock().unlock(); |
702 |
jsr166 |
1.56 |
releaseWriteLock(lock); |
703 |
|
|
awaitTermination(t1); |
704 |
|
|
awaitTermination(t2); |
705 |
jsr166 |
1.28 |
} |
706 |
dl |
1.23 |
|
707 |
|
|
/** |
708 |
dl |
1.15 |
* Read tryLock succeeds if readlocked but not writelocked |
709 |
dl |
1.4 |
*/ |
710 |
jsr166 |
1.32 |
public void testTryLockWhenReadLocked() throws InterruptedException { |
711 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
712 |
|
|
lock.readLock().lock(); |
713 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
714 |
jsr166 |
1.37 |
public void realRun() { |
715 |
jsr166 |
1.42 |
assertTrue(lock.readLock().tryLock()); |
716 |
jsr166 |
1.37 |
lock.readLock().unlock(); |
717 |
|
|
}}); |
718 |
jsr166 |
1.32 |
|
719 |
jsr166 |
1.56 |
awaitTermination(t); |
720 |
jsr166 |
1.32 |
lock.readLock().unlock(); |
721 |
jsr166 |
1.28 |
} |
722 |
|
|
|
723 |
dl |
1.4 |
/** |
724 |
dl |
1.15 |
* write tryLock fails when readlocked |
725 |
dl |
1.4 |
*/ |
726 |
jsr166 |
1.32 |
public void testWriteTryLockWhenReadLocked() throws InterruptedException { |
727 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
728 |
|
|
lock.readLock().lock(); |
729 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
730 |
jsr166 |
1.37 |
public void realRun() { |
731 |
jsr166 |
1.42 |
assertFalse(lock.writeLock().tryLock()); |
732 |
jsr166 |
1.37 |
}}); |
733 |
jsr166 |
1.32 |
|
734 |
jsr166 |
1.56 |
awaitTermination(t); |
735 |
jsr166 |
1.32 |
lock.readLock().unlock(); |
736 |
jsr166 |
1.28 |
} |
737 |
dl |
1.2 |
|
738 |
dl |
1.24 |
/** |
739 |
|
|
* Fair Read tryLock succeeds if readlocked but not writelocked |
740 |
|
|
*/ |
741 |
jsr166 |
1.32 |
public void testTryLockWhenReadLockedFair() throws InterruptedException { |
742 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
743 |
|
|
lock.readLock().lock(); |
744 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
745 |
jsr166 |
1.37 |
public void realRun() { |
746 |
jsr166 |
1.42 |
assertTrue(lock.readLock().tryLock()); |
747 |
jsr166 |
1.37 |
lock.readLock().unlock(); |
748 |
|
|
}}); |
749 |
jsr166 |
1.32 |
|
750 |
jsr166 |
1.56 |
awaitTermination(t); |
751 |
jsr166 |
1.32 |
lock.readLock().unlock(); |
752 |
jsr166 |
1.28 |
} |
753 |
|
|
|
754 |
dl |
1.24 |
/** |
755 |
|
|
* Fair write tryLock fails when readlocked |
756 |
|
|
*/ |
757 |
jsr166 |
1.32 |
public void testWriteTryLockWhenReadLockedFair() throws InterruptedException { |
758 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
759 |
|
|
lock.readLock().lock(); |
760 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
761 |
jsr166 |
1.37 |
public void realRun() { |
762 |
jsr166 |
1.42 |
assertFalse(lock.writeLock().tryLock()); |
763 |
jsr166 |
1.37 |
}}); |
764 |
jsr166 |
1.32 |
|
765 |
jsr166 |
1.56 |
awaitTermination(t); |
766 |
jsr166 |
1.32 |
lock.readLock().unlock(); |
767 |
jsr166 |
1.28 |
} |
768 |
|
|
|
769 |
dl |
1.4 |
/** |
770 |
dl |
1.15 |
* write timed tryLock times out if locked |
771 |
dl |
1.4 |
*/ |
772 |
jsr166 |
1.32 |
public void testWriteTryLock_Timeout() throws InterruptedException { |
773 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
774 |
|
|
lock.writeLock().lock(); |
775 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
776 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
777 |
jsr166 |
1.59 |
long startTime = System.nanoTime(); |
778 |
|
|
long timeoutMillis = 10; |
779 |
|
|
assertFalse(lock.writeLock().tryLock(timeoutMillis, MILLISECONDS)); |
780 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
781 |
jsr166 |
1.33 |
}}); |
782 |
jsr166 |
1.32 |
|
783 |
jsr166 |
1.56 |
awaitTermination(t); |
784 |
jsr166 |
1.34 |
assertTrue(lock.writeLock().isHeldByCurrentThread()); |
785 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
786 |
jsr166 |
1.28 |
} |
787 |
dl |
1.2 |
|
788 |
dl |
1.4 |
/** |
789 |
dl |
1.15 |
* read timed tryLock times out if write-locked |
790 |
dl |
1.4 |
*/ |
791 |
jsr166 |
1.32 |
public void testReadTryLock_Timeout() throws InterruptedException { |
792 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
793 |
|
|
lock.writeLock().lock(); |
794 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
795 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
796 |
jsr166 |
1.59 |
long startTime = System.nanoTime(); |
797 |
|
|
long timeoutMillis = 10; |
798 |
|
|
assertFalse(lock.readLock().tryLock(timeoutMillis, MILLISECONDS)); |
799 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
800 |
jsr166 |
1.33 |
}}); |
801 |
jsr166 |
1.32 |
|
802 |
jsr166 |
1.56 |
awaitTermination(t); |
803 |
jsr166 |
1.34 |
assertTrue(lock.writeLock().isHeldByCurrentThread()); |
804 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
805 |
jsr166 |
1.28 |
} |
806 |
dl |
1.2 |
|
807 |
dl |
1.4 |
/** |
808 |
|
|
* write lockInterruptibly succeeds if lock free else is interruptible |
809 |
|
|
*/ |
810 |
jsr166 |
1.32 |
public void testWriteLockInterruptibly() throws InterruptedException { |
811 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
812 |
jsr166 |
1.32 |
lock.writeLock().lockInterruptibly(); |
813 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
814 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
815 |
|
|
lock.writeLock().lockInterruptibly(); |
816 |
|
|
}}); |
817 |
jsr166 |
1.32 |
|
818 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t); |
819 |
jsr166 |
1.32 |
t.interrupt(); |
820 |
jsr166 |
1.56 |
awaitTermination(t); |
821 |
jsr166 |
1.54 |
releaseWriteLock(lock); |
822 |
dl |
1.2 |
} |
823 |
|
|
|
824 |
dl |
1.4 |
/** |
825 |
jsr166 |
1.43 |
* read lockInterruptibly succeeds if lock free else is interruptible |
826 |
dl |
1.4 |
*/ |
827 |
jsr166 |
1.32 |
public void testReadLockInterruptibly() throws InterruptedException { |
828 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
829 |
jsr166 |
1.32 |
lock.writeLock().lockInterruptibly(); |
830 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
831 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
832 |
|
|
lock.readLock().lockInterruptibly(); |
833 |
|
|
}}); |
834 |
jsr166 |
1.32 |
|
835 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t); |
836 |
jsr166 |
1.32 |
t.interrupt(); |
837 |
jsr166 |
1.56 |
awaitTermination(t); |
838 |
jsr166 |
1.54 |
releaseWriteLock(lock); |
839 |
dl |
1.2 |
} |
840 |
|
|
|
841 |
dl |
1.4 |
/** |
842 |
|
|
* Calling await without holding lock throws IllegalMonitorStateException |
843 |
|
|
*/ |
844 |
jsr166 |
1.32 |
public void testAwait_IllegalMonitor() throws InterruptedException { |
845 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
846 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
847 |
|
|
try { |
848 |
|
|
c.await(); |
849 |
dl |
1.4 |
shouldThrow(); |
850 |
jsr166 |
1.32 |
} catch (IllegalMonitorStateException success) {} |
851 |
jsr166 |
1.56 |
try { |
852 |
|
|
c.await(LONG_DELAY_MS, MILLISECONDS); |
853 |
|
|
shouldThrow(); |
854 |
|
|
} catch (IllegalMonitorStateException success) {} |
855 |
|
|
try { |
856 |
|
|
c.awaitNanos(100); |
857 |
|
|
shouldThrow(); |
858 |
|
|
} catch (IllegalMonitorStateException success) {} |
859 |
|
|
try { |
860 |
|
|
c.awaitUninterruptibly(); |
861 |
|
|
shouldThrow(); |
862 |
|
|
} catch (IllegalMonitorStateException success) {} |
863 |
dl |
1.2 |
} |
864 |
|
|
|
865 |
dl |
1.4 |
/** |
866 |
|
|
* Calling signal without holding lock throws IllegalMonitorStateException |
867 |
|
|
*/ |
868 |
dl |
1.2 |
public void testSignal_IllegalMonitor() { |
869 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
870 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
871 |
|
|
try { |
872 |
|
|
c.signal(); |
873 |
dl |
1.4 |
shouldThrow(); |
874 |
jsr166 |
1.32 |
} catch (IllegalMonitorStateException success) {} |
875 |
dl |
1.2 |
} |
876 |
|
|
|
877 |
dl |
1.4 |
/** |
878 |
jsr166 |
1.56 |
* Calling signalAll without holding lock throws IllegalMonitorStateException |
879 |
|
|
*/ |
880 |
|
|
public void testSignalAll_IllegalMonitor() { |
881 |
|
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
882 |
|
|
final Condition c = lock.writeLock().newCondition(); |
883 |
|
|
try { |
884 |
|
|
c.signalAll(); |
885 |
|
|
shouldThrow(); |
886 |
|
|
} catch (IllegalMonitorStateException success) {} |
887 |
|
|
} |
888 |
|
|
|
889 |
|
|
/** |
890 |
dl |
1.4 |
* awaitNanos without a signal times out |
891 |
|
|
*/ |
892 |
jsr166 |
1.32 |
public void testAwaitNanos_Timeout() throws InterruptedException { |
893 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
894 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
895 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
896 |
jsr166 |
1.56 |
long startTime = System.nanoTime(); |
897 |
|
|
long timeoutMillis = 10; |
898 |
|
|
long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis); |
899 |
|
|
long nanosRemaining = c.awaitNanos(timeoutNanos); |
900 |
|
|
assertTrue(nanosRemaining <= 0); |
901 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
902 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
903 |
dl |
1.2 |
} |
904 |
|
|
|
905 |
dl |
1.4 |
/** |
906 |
jsr166 |
1.43 |
* timed await without a signal times out |
907 |
dl |
1.4 |
*/ |
908 |
jsr166 |
1.34 |
public void testAwait_Timeout() throws InterruptedException { |
909 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
910 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
911 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
912 |
jsr166 |
1.56 |
long startTime = System.nanoTime(); |
913 |
|
|
long timeoutMillis = 10; |
914 |
|
|
assertFalse(c.await(timeoutMillis, MILLISECONDS)); |
915 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
916 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
917 |
dl |
1.2 |
} |
918 |
|
|
|
919 |
dl |
1.4 |
/** |
920 |
|
|
* awaitUntil without a signal times out |
921 |
|
|
*/ |
922 |
jsr166 |
1.34 |
public void testAwaitUntil_Timeout() throws InterruptedException { |
923 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
924 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
925 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
926 |
jsr166 |
1.59 |
long startTime = System.nanoTime(); |
927 |
|
|
long timeoutMillis = 10; |
928 |
jsr166 |
1.32 |
java.util.Date d = new java.util.Date(); |
929 |
jsr166 |
1.59 |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis))); |
930 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
931 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
932 |
dl |
1.2 |
} |
933 |
dl |
1.1 |
|
934 |
dl |
1.4 |
/** |
935 |
|
|
* await returns when signalled |
936 |
|
|
*/ |
937 |
jsr166 |
1.32 |
public void testAwait() throws InterruptedException { |
938 |
jsr166 |
1.59 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
939 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
940 |
jsr166 |
1.56 |
final CountDownLatch locked = new CountDownLatch(1); |
941 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
942 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
943 |
|
|
lock.writeLock().lock(); |
944 |
jsr166 |
1.56 |
locked.countDown(); |
945 |
jsr166 |
1.33 |
c.await(); |
946 |
|
|
lock.writeLock().unlock(); |
947 |
|
|
}}); |
948 |
dl |
1.2 |
|
949 |
jsr166 |
1.56 |
locked.await(); |
950 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
951 |
jsr166 |
1.59 |
assertHasWaiters(lock, c, t); |
952 |
jsr166 |
1.32 |
c.signal(); |
953 |
jsr166 |
1.59 |
assertHasNoWaiters(lock, c); |
954 |
jsr166 |
1.56 |
assertTrue(t.isAlive()); |
955 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
956 |
jsr166 |
1.56 |
awaitTermination(t); |
957 |
dl |
1.22 |
} |
958 |
|
|
|
959 |
dl |
1.4 |
/** |
960 |
|
|
* awaitUninterruptibly doesn't abort on interrupt |
961 |
|
|
*/ |
962 |
jsr166 |
1.32 |
public void testAwaitUninterruptibly() throws InterruptedException { |
963 |
dl |
1.22 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
964 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
965 |
jsr166 |
1.56 |
final CountDownLatch locked = new CountDownLatch(1); |
966 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
967 |
|
|
public void realRun() { |
968 |
|
|
lock.writeLock().lock(); |
969 |
|
|
locked.countDown(); |
970 |
|
|
c.awaitUninterruptibly(); |
971 |
|
|
assertTrue(Thread.interrupted()); |
972 |
|
|
lock.writeLock().unlock(); |
973 |
|
|
}}); |
974 |
dl |
1.22 |
|
975 |
jsr166 |
1.56 |
locked.await(); |
976 |
|
|
lock.writeLock().lock(); |
977 |
|
|
lock.writeLock().unlock(); |
978 |
|
|
t.interrupt(); |
979 |
jsr166 |
1.59 |
long timeoutMillis = 10; |
980 |
|
|
assertThreadJoinTimesOut(t, timeoutMillis); |
981 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
982 |
jsr166 |
1.56 |
c.signal(); |
983 |
|
|
lock.writeLock().unlock(); |
984 |
|
|
awaitTermination(t); |
985 |
dl |
1.2 |
} |
986 |
|
|
|
987 |
dl |
1.4 |
/** |
988 |
|
|
* await is interruptible |
989 |
|
|
*/ |
990 |
jsr166 |
1.32 |
public void testAwait_Interrupt() throws InterruptedException { |
991 |
jsr166 |
1.56 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
992 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
993 |
jsr166 |
1.52 |
final CountDownLatch locked = new CountDownLatch(1); |
994 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
995 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
996 |
|
|
lock.writeLock().lock(); |
997 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
998 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
999 |
jsr166 |
1.52 |
locked.countDown(); |
1000 |
jsr166 |
1.56 |
try { |
1001 |
|
|
c.await(); |
1002 |
|
|
} finally { |
1003 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
1004 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
1005 |
|
|
lock.writeLock().unlock(); |
1006 |
|
|
assertFalse(Thread.interrupted()); |
1007 |
|
|
} |
1008 |
jsr166 |
1.33 |
}}); |
1009 |
dl |
1.2 |
|
1010 |
jsr166 |
1.52 |
locked.await(); |
1011 |
jsr166 |
1.56 |
assertHasWaiters(lock, c, t); |
1012 |
jsr166 |
1.32 |
t.interrupt(); |
1013 |
jsr166 |
1.56 |
awaitTermination(t); |
1014 |
jsr166 |
1.58 |
assertNotWriteLocked(lock); |
1015 |
dl |
1.2 |
} |
1016 |
|
|
|
1017 |
dl |
1.4 |
/** |
1018 |
|
|
* awaitNanos is interruptible |
1019 |
|
|
*/ |
1020 |
jsr166 |
1.32 |
public void testAwaitNanos_Interrupt() throws InterruptedException { |
1021 |
jsr166 |
1.56 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1022 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
1023 |
jsr166 |
1.52 |
final CountDownLatch locked = new CountDownLatch(1); |
1024 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
1025 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
1026 |
|
|
lock.writeLock().lock(); |
1027 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
1028 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
1029 |
jsr166 |
1.52 |
locked.countDown(); |
1030 |
jsr166 |
1.56 |
try { |
1031 |
jsr166 |
1.59 |
c.awaitNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS)); |
1032 |
jsr166 |
1.56 |
} finally { |
1033 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
1034 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
1035 |
|
|
lock.writeLock().unlock(); |
1036 |
|
|
assertFalse(Thread.interrupted()); |
1037 |
|
|
} |
1038 |
jsr166 |
1.33 |
}}); |
1039 |
dl |
1.2 |
|
1040 |
jsr166 |
1.52 |
locked.await(); |
1041 |
jsr166 |
1.56 |
assertHasWaiters(lock, c, t); |
1042 |
jsr166 |
1.32 |
t.interrupt(); |
1043 |
jsr166 |
1.56 |
awaitTermination(t); |
1044 |
jsr166 |
1.58 |
assertNotWriteLocked(lock); |
1045 |
dl |
1.2 |
} |
1046 |
dl |
1.1 |
|
1047 |
dl |
1.4 |
/** |
1048 |
|
|
* awaitUntil is interruptible |
1049 |
|
|
*/ |
1050 |
jsr166 |
1.32 |
public void testAwaitUntil_Interrupt() throws InterruptedException { |
1051 |
jsr166 |
1.56 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1052 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
1053 |
jsr166 |
1.52 |
final CountDownLatch locked = new CountDownLatch(1); |
1054 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
1055 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
1056 |
|
|
lock.writeLock().lock(); |
1057 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
1058 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
1059 |
jsr166 |
1.52 |
locked.countDown(); |
1060 |
jsr166 |
1.33 |
java.util.Date d = new java.util.Date(); |
1061 |
jsr166 |
1.56 |
try { |
1062 |
jsr166 |
1.59 |
c.awaitUntil(new java.util.Date(d.getTime() + 2 * LONG_DELAY_MS)); |
1063 |
jsr166 |
1.56 |
} finally { |
1064 |
jsr166 |
1.58 |
assertWriteLockedBy(lock, Thread.currentThread()); |
1065 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
1066 |
|
|
lock.writeLock().unlock(); |
1067 |
|
|
assertFalse(Thread.interrupted()); |
1068 |
|
|
} |
1069 |
jsr166 |
1.33 |
}}); |
1070 |
dl |
1.2 |
|
1071 |
jsr166 |
1.52 |
locked.await(); |
1072 |
jsr166 |
1.56 |
assertHasWaiters(lock, c, t); |
1073 |
jsr166 |
1.32 |
t.interrupt(); |
1074 |
jsr166 |
1.56 |
awaitTermination(t); |
1075 |
jsr166 |
1.58 |
assertNotWriteLocked(lock); |
1076 |
dl |
1.2 |
} |
1077 |
|
|
|
1078 |
dl |
1.4 |
/** |
1079 |
|
|
* signalAll wakes up all threads |
1080 |
|
|
*/ |
1081 |
jsr166 |
1.32 |
public void testSignalAll() throws InterruptedException { |
1082 |
jsr166 |
1.56 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1083 |
dl |
1.2 |
final Condition c = lock.writeLock().newCondition(); |
1084 |
jsr166 |
1.56 |
final CountDownLatch locked = new CountDownLatch(2); |
1085 |
|
|
final Lock writeLock = lock.writeLock(); |
1086 |
jsr166 |
1.45 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
1087 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
1088 |
jsr166 |
1.56 |
writeLock.lock(); |
1089 |
|
|
locked.countDown(); |
1090 |
jsr166 |
1.33 |
c.await(); |
1091 |
jsr166 |
1.56 |
writeLock.unlock(); |
1092 |
jsr166 |
1.33 |
}}); |
1093 |
|
|
|
1094 |
jsr166 |
1.45 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
1095 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
1096 |
jsr166 |
1.56 |
writeLock.lock(); |
1097 |
|
|
locked.countDown(); |
1098 |
jsr166 |
1.33 |
c.await(); |
1099 |
jsr166 |
1.56 |
writeLock.unlock(); |
1100 |
jsr166 |
1.33 |
}}); |
1101 |
dl |
1.2 |
|
1102 |
jsr166 |
1.56 |
locked.await(); |
1103 |
|
|
writeLock.lock(); |
1104 |
|
|
assertHasWaiters(lock, c, t1, t2); |
1105 |
jsr166 |
1.32 |
c.signalAll(); |
1106 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
1107 |
|
|
writeLock.unlock(); |
1108 |
|
|
awaitTermination(t1); |
1109 |
|
|
awaitTermination(t2); |
1110 |
|
|
} |
1111 |
|
|
|
1112 |
|
|
/** |
1113 |
|
|
* signal wakes up waiting threads in FIFO order. |
1114 |
|
|
*/ |
1115 |
|
|
public void testSignalWakesFifo() throws InterruptedException { |
1116 |
|
|
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1117 |
|
|
final Condition c = lock.writeLock().newCondition(); |
1118 |
|
|
final CountDownLatch locked1 = new CountDownLatch(1); |
1119 |
|
|
final CountDownLatch locked2 = new CountDownLatch(1); |
1120 |
|
|
final Lock writeLock = lock.writeLock(); |
1121 |
|
|
Thread t1 = newStartedThread(new CheckedRunnable() { |
1122 |
|
|
public void realRun() throws InterruptedException { |
1123 |
|
|
writeLock.lock(); |
1124 |
|
|
locked1.countDown(); |
1125 |
|
|
c.await(); |
1126 |
|
|
writeLock.unlock(); |
1127 |
|
|
}}); |
1128 |
|
|
|
1129 |
|
|
locked1.await(); |
1130 |
|
|
|
1131 |
|
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
1132 |
|
|
public void realRun() throws InterruptedException { |
1133 |
|
|
writeLock.lock(); |
1134 |
|
|
locked2.countDown(); |
1135 |
|
|
c.await(); |
1136 |
|
|
writeLock.unlock(); |
1137 |
|
|
}}); |
1138 |
|
|
|
1139 |
|
|
locked2.await(); |
1140 |
|
|
|
1141 |
|
|
writeLock.lock(); |
1142 |
|
|
assertHasWaiters(lock, c, t1, t2); |
1143 |
|
|
assertFalse(lock.hasQueuedThreads()); |
1144 |
|
|
c.signal(); |
1145 |
|
|
assertHasWaiters(lock, c, t2); |
1146 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
1147 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
1148 |
|
|
c.signal(); |
1149 |
|
|
assertHasNoWaiters(lock, c); |
1150 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
1151 |
|
|
assertTrue(lock.hasQueuedThread(t2)); |
1152 |
|
|
writeLock.unlock(); |
1153 |
|
|
awaitTermination(t1); |
1154 |
|
|
awaitTermination(t2); |
1155 |
dl |
1.2 |
} |
1156 |
|
|
|
1157 |
dl |
1.4 |
/** |
1158 |
jsr166 |
1.59 |
* await after multiple reentrant locking preserves lock count |
1159 |
|
|
*/ |
1160 |
|
|
public void testAwaitLockCount() throws InterruptedException { |
1161 |
|
|
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1162 |
|
|
final Condition c = lock.writeLock().newCondition(); |
1163 |
|
|
final CountDownLatch locked = new CountDownLatch(2); |
1164 |
|
|
Thread t1 = newStartedThread(new CheckedRunnable() { |
1165 |
|
|
public void realRun() throws InterruptedException { |
1166 |
|
|
lock.writeLock().lock(); |
1167 |
|
|
assertWriteLockedBy(lock, Thread.currentThread()); |
1168 |
|
|
assertEquals(1, lock.writeLock().getHoldCount()); |
1169 |
|
|
locked.countDown(); |
1170 |
|
|
c.await(); |
1171 |
|
|
assertWriteLockedBy(lock, Thread.currentThread()); |
1172 |
|
|
assertEquals(1, lock.writeLock().getHoldCount()); |
1173 |
|
|
lock.writeLock().unlock(); |
1174 |
|
|
}}); |
1175 |
|
|
|
1176 |
|
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
1177 |
|
|
public void realRun() throws InterruptedException { |
1178 |
|
|
lock.writeLock().lock(); |
1179 |
|
|
lock.writeLock().lock(); |
1180 |
|
|
assertWriteLockedBy(lock, Thread.currentThread()); |
1181 |
|
|
assertEquals(2, lock.writeLock().getHoldCount()); |
1182 |
|
|
locked.countDown(); |
1183 |
|
|
c.await(); |
1184 |
|
|
assertWriteLockedBy(lock, Thread.currentThread()); |
1185 |
|
|
assertEquals(2, lock.writeLock().getHoldCount()); |
1186 |
|
|
lock.writeLock().unlock(); |
1187 |
|
|
lock.writeLock().unlock(); |
1188 |
|
|
}}); |
1189 |
|
|
|
1190 |
|
|
locked.await(); |
1191 |
|
|
lock.writeLock().lock(); |
1192 |
|
|
assertHasWaiters(lock, c, t1, t2); |
1193 |
|
|
c.signalAll(); |
1194 |
|
|
assertHasNoWaiters(lock, c); |
1195 |
|
|
lock.writeLock().unlock(); |
1196 |
|
|
awaitTermination(t1); |
1197 |
|
|
awaitTermination(t2); |
1198 |
|
|
} |
1199 |
|
|
|
1200 |
|
|
/** |
1201 |
dl |
1.4 |
* A serialized lock deserializes as unlocked |
1202 |
|
|
*/ |
1203 |
jsr166 |
1.32 |
public void testSerialization() throws Exception { |
1204 |
dl |
1.2 |
ReentrantReadWriteLock l = new ReentrantReadWriteLock(); |
1205 |
|
|
l.readLock().lock(); |
1206 |
|
|
l.readLock().unlock(); |
1207 |
|
|
|
1208 |
jsr166 |
1.32 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
1209 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
1210 |
|
|
out.writeObject(l); |
1211 |
|
|
out.close(); |
1212 |
|
|
|
1213 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
1214 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
1215 |
|
|
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
1216 |
|
|
r.readLock().lock(); |
1217 |
|
|
r.readLock().unlock(); |
1218 |
dl |
1.1 |
} |
1219 |
dl |
1.2 |
|
1220 |
dl |
1.6 |
/** |
1221 |
dl |
1.13 |
* hasQueuedThreads reports whether there are waiting threads |
1222 |
|
|
*/ |
1223 |
jsr166 |
1.59 |
public void testHasQueuedThreads() throws InterruptedException { |
1224 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1225 |
dl |
1.13 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1226 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1227 |
jsr166 |
1.32 |
assertFalse(lock.hasQueuedThreads()); |
1228 |
|
|
lock.writeLock().lock(); |
1229 |
jsr166 |
1.56 |
assertFalse(lock.hasQueuedThreads()); |
1230 |
jsr166 |
1.32 |
t1.start(); |
1231 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
1232 |
jsr166 |
1.59 |
assertTrue(lock.hasQueuedThreads()); |
1233 |
jsr166 |
1.32 |
t2.start(); |
1234 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t2); |
1235 |
jsr166 |
1.32 |
assertTrue(lock.hasQueuedThreads()); |
1236 |
|
|
t1.interrupt(); |
1237 |
jsr166 |
1.56 |
awaitTermination(t1); |
1238 |
jsr166 |
1.32 |
assertTrue(lock.hasQueuedThreads()); |
1239 |
|
|
lock.writeLock().unlock(); |
1240 |
jsr166 |
1.56 |
awaitTermination(t2); |
1241 |
jsr166 |
1.32 |
assertFalse(lock.hasQueuedThreads()); |
1242 |
jsr166 |
1.28 |
} |
1243 |
dl |
1.13 |
|
1244 |
|
|
/** |
1245 |
dl |
1.19 |
* hasQueuedThread(null) throws NPE |
1246 |
|
|
*/ |
1247 |
jsr166 |
1.28 |
public void testHasQueuedThreadNPE() { |
1248 |
jsr166 |
1.59 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1249 |
dl |
1.19 |
try { |
1250 |
jsr166 |
1.59 |
lock.hasQueuedThread(null); |
1251 |
dl |
1.19 |
shouldThrow(); |
1252 |
jsr166 |
1.33 |
} catch (NullPointerException success) {} |
1253 |
dl |
1.19 |
} |
1254 |
|
|
|
1255 |
|
|
/** |
1256 |
|
|
* hasQueuedThread reports whether a thread is queued. |
1257 |
|
|
*/ |
1258 |
jsr166 |
1.32 |
public void testHasQueuedThread() throws InterruptedException { |
1259 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1260 |
jsr166 |
1.56 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1261 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1262 |
|
|
assertFalse(lock.hasQueuedThread(t1)); |
1263 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
1264 |
|
|
lock.writeLock().lock(); |
1265 |
jsr166 |
1.32 |
t1.start(); |
1266 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
1267 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
1268 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
1269 |
jsr166 |
1.32 |
t2.start(); |
1270 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t2); |
1271 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
1272 |
|
|
assertTrue(lock.hasQueuedThread(t2)); |
1273 |
jsr166 |
1.32 |
t1.interrupt(); |
1274 |
jsr166 |
1.56 |
awaitTermination(t1); |
1275 |
|
|
assertFalse(lock.hasQueuedThread(t1)); |
1276 |
|
|
assertTrue(lock.hasQueuedThread(t2)); |
1277 |
|
|
lock.writeLock().unlock(); |
1278 |
|
|
awaitTermination(t2); |
1279 |
|
|
assertFalse(lock.hasQueuedThread(t1)); |
1280 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
1281 |
jsr166 |
1.28 |
} |
1282 |
dl |
1.19 |
|
1283 |
|
|
/** |
1284 |
dl |
1.6 |
* getQueueLength reports number of waiting threads |
1285 |
|
|
*/ |
1286 |
jsr166 |
1.32 |
public void testGetQueueLength() throws InterruptedException { |
1287 |
jsr166 |
1.58 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1288 |
dl |
1.6 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1289 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1290 |
jsr166 |
1.32 |
assertEquals(0, lock.getQueueLength()); |
1291 |
|
|
lock.writeLock().lock(); |
1292 |
|
|
t1.start(); |
1293 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
1294 |
jsr166 |
1.32 |
assertEquals(1, lock.getQueueLength()); |
1295 |
|
|
t2.start(); |
1296 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t2); |
1297 |
jsr166 |
1.32 |
assertEquals(2, lock.getQueueLength()); |
1298 |
|
|
t1.interrupt(); |
1299 |
jsr166 |
1.56 |
awaitTermination(t1); |
1300 |
jsr166 |
1.32 |
assertEquals(1, lock.getQueueLength()); |
1301 |
|
|
lock.writeLock().unlock(); |
1302 |
jsr166 |
1.56 |
awaitTermination(t2); |
1303 |
jsr166 |
1.32 |
assertEquals(0, lock.getQueueLength()); |
1304 |
jsr166 |
1.28 |
} |
1305 |
dl |
1.6 |
|
1306 |
|
|
/** |
1307 |
|
|
* getQueuedThreads includes waiting threads |
1308 |
|
|
*/ |
1309 |
jsr166 |
1.32 |
public void testGetQueuedThreads() throws InterruptedException { |
1310 |
jsr166 |
1.35 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1311 |
dl |
1.6 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1312 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1313 |
jsr166 |
1.32 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1314 |
|
|
lock.writeLock().lock(); |
1315 |
|
|
assertTrue(lock.getQueuedThreads().isEmpty()); |
1316 |
|
|
t1.start(); |
1317 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t1); |
1318 |
|
|
assertEquals(1, lock.getQueuedThreads().size()); |
1319 |
jsr166 |
1.32 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1320 |
|
|
t2.start(); |
1321 |
jsr166 |
1.56 |
waitForQueuedThread(lock, t2); |
1322 |
|
|
assertEquals(2, lock.getQueuedThreads().size()); |
1323 |
jsr166 |
1.32 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1324 |
|
|
assertTrue(lock.getQueuedThreads().contains(t2)); |
1325 |
|
|
t1.interrupt(); |
1326 |
jsr166 |
1.56 |
awaitTermination(t1); |
1327 |
jsr166 |
1.32 |
assertFalse(lock.getQueuedThreads().contains(t1)); |
1328 |
|
|
assertTrue(lock.getQueuedThreads().contains(t2)); |
1329 |
jsr166 |
1.56 |
assertEquals(1, lock.getQueuedThreads().size()); |
1330 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
1331 |
jsr166 |
1.56 |
awaitTermination(t2); |
1332 |
jsr166 |
1.32 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1333 |
jsr166 |
1.28 |
} |
1334 |
dl |
1.6 |
|
1335 |
|
|
/** |
1336 |
dl |
1.14 |
* hasWaiters throws NPE if null |
1337 |
|
|
*/ |
1338 |
|
|
public void testHasWaitersNPE() { |
1339 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1340 |
dl |
1.14 |
try { |
1341 |
|
|
lock.hasWaiters(null); |
1342 |
|
|
shouldThrow(); |
1343 |
jsr166 |
1.32 |
} catch (NullPointerException success) {} |
1344 |
dl |
1.14 |
} |
1345 |
|
|
|
1346 |
|
|
/** |
1347 |
|
|
* getWaitQueueLength throws NPE if null |
1348 |
|
|
*/ |
1349 |
|
|
public void testGetWaitQueueLengthNPE() { |
1350 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1351 |
dl |
1.14 |
try { |
1352 |
|
|
lock.getWaitQueueLength(null); |
1353 |
|
|
shouldThrow(); |
1354 |
jsr166 |
1.32 |
} catch (NullPointerException success) {} |
1355 |
dl |
1.14 |
} |
1356 |
|
|
|
1357 |
|
|
/** |
1358 |
|
|
* getWaitingThreads throws NPE if null |
1359 |
|
|
*/ |
1360 |
|
|
public void testGetWaitingThreadsNPE() { |
1361 |
jsr166 |
1.35 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1362 |
dl |
1.14 |
try { |
1363 |
|
|
lock.getWaitingThreads(null); |
1364 |
|
|
shouldThrow(); |
1365 |
jsr166 |
1.32 |
} catch (NullPointerException success) {} |
1366 |
dl |
1.14 |
} |
1367 |
|
|
|
1368 |
|
|
/** |
1369 |
jsr166 |
1.59 |
* hasWaiters throws IllegalArgumentException if not owned |
1370 |
dl |
1.13 |
*/ |
1371 |
|
|
public void testHasWaitersIAE() { |
1372 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1373 |
jsr166 |
1.31 |
final Condition c = lock.writeLock().newCondition(); |
1374 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1375 |
dl |
1.13 |
try { |
1376 |
|
|
lock2.hasWaiters(c); |
1377 |
|
|
shouldThrow(); |
1378 |
jsr166 |
1.32 |
} catch (IllegalArgumentException success) {} |
1379 |
dl |
1.13 |
} |
1380 |
|
|
|
1381 |
|
|
/** |
1382 |
jsr166 |
1.59 |
* hasWaiters throws IllegalMonitorStateException if not locked |
1383 |
dl |
1.13 |
*/ |
1384 |
|
|
public void testHasWaitersIMSE() { |
1385 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1386 |
jsr166 |
1.31 |
final Condition c = lock.writeLock().newCondition(); |
1387 |
dl |
1.13 |
try { |
1388 |
|
|
lock.hasWaiters(c); |
1389 |
|
|
shouldThrow(); |
1390 |
jsr166 |
1.32 |
} catch (IllegalMonitorStateException success) {} |
1391 |
dl |
1.13 |
} |
1392 |
|
|
|
1393 |
|
|
/** |
1394 |
jsr166 |
1.59 |
* getWaitQueueLength throws IllegalArgumentException if not owned |
1395 |
dl |
1.13 |
*/ |
1396 |
|
|
public void testGetWaitQueueLengthIAE() { |
1397 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1398 |
jsr166 |
1.31 |
final Condition c = lock.writeLock().newCondition(); |
1399 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1400 |
dl |
1.13 |
try { |
1401 |
|
|
lock2.getWaitQueueLength(c); |
1402 |
|
|
shouldThrow(); |
1403 |
jsr166 |
1.32 |
} catch (IllegalArgumentException success) {} |
1404 |
dl |
1.13 |
} |
1405 |
|
|
|
1406 |
|
|
/** |
1407 |
jsr166 |
1.59 |
* getWaitQueueLength throws IllegalMonitorStateException if not locked |
1408 |
dl |
1.13 |
*/ |
1409 |
|
|
public void testGetWaitQueueLengthIMSE() { |
1410 |
jsr166 |
1.35 |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1411 |
jsr166 |
1.31 |
final Condition c = lock.writeLock().newCondition(); |
1412 |
dl |
1.13 |
try { |
1413 |
|
|
lock.getWaitQueueLength(c); |
1414 |
|
|
shouldThrow(); |
1415 |
jsr166 |
1.32 |
} catch (IllegalMonitorStateException success) {} |
1416 |
dl |
1.13 |
} |
1417 |
|
|
|
1418 |
|
|
/** |
1419 |
jsr166 |
1.59 |
* getWaitingThreads throws IllegalArgumentException if not owned |
1420 |
dl |
1.13 |
*/ |
1421 |
|
|
public void testGetWaitingThreadsIAE() { |
1422 |
jsr166 |
1.35 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1423 |
jsr166 |
1.31 |
final Condition c = lock.writeLock().newCondition(); |
1424 |
jsr166 |
1.35 |
final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock(); |
1425 |
dl |
1.13 |
try { |
1426 |
|
|
lock2.getWaitingThreads(c); |
1427 |
|
|
shouldThrow(); |
1428 |
jsr166 |
1.32 |
} catch (IllegalArgumentException success) {} |
1429 |
dl |
1.13 |
} |
1430 |
|
|
|
1431 |
|
|
/** |
1432 |
jsr166 |
1.59 |
* getWaitingThreads throws IllegalMonitorStateException if not locked |
1433 |
dl |
1.13 |
*/ |
1434 |
|
|
public void testGetWaitingThreadsIMSE() { |
1435 |
jsr166 |
1.35 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1436 |
jsr166 |
1.31 |
final Condition c = lock.writeLock().newCondition(); |
1437 |
dl |
1.13 |
try { |
1438 |
|
|
lock.getWaitingThreads(c); |
1439 |
|
|
shouldThrow(); |
1440 |
jsr166 |
1.32 |
} catch (IllegalMonitorStateException success) {} |
1441 |
dl |
1.13 |
} |
1442 |
|
|
|
1443 |
|
|
/** |
1444 |
dl |
1.6 |
* hasWaiters returns true when a thread is waiting, else false |
1445 |
|
|
*/ |
1446 |
jsr166 |
1.32 |
public void testHasWaiters() throws InterruptedException { |
1447 |
jsr166 |
1.56 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1448 |
jsr166 |
1.31 |
final Condition c = lock.writeLock().newCondition(); |
1449 |
jsr166 |
1.56 |
final CountDownLatch locked = new CountDownLatch(1); |
1450 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
1451 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
1452 |
|
|
lock.writeLock().lock(); |
1453 |
jsr166 |
1.59 |
assertHasNoWaiters(lock, c); |
1454 |
jsr166 |
1.42 |
assertFalse(lock.hasWaiters(c)); |
1455 |
jsr166 |
1.56 |
locked.countDown(); |
1456 |
jsr166 |
1.33 |
c.await(); |
1457 |
jsr166 |
1.59 |
assertHasNoWaiters(lock, c); |
1458 |
|
|
assertFalse(lock.hasWaiters(c)); |
1459 |
jsr166 |
1.33 |
lock.writeLock().unlock(); |
1460 |
|
|
}}); |
1461 |
dl |
1.6 |
|
1462 |
jsr166 |
1.56 |
locked.await(); |
1463 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
1464 |
jsr166 |
1.59 |
assertHasWaiters(lock, c, t); |
1465 |
jsr166 |
1.32 |
assertTrue(lock.hasWaiters(c)); |
1466 |
|
|
c.signal(); |
1467 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
1468 |
jsr166 |
1.59 |
assertFalse(lock.hasWaiters(c)); |
1469 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
1470 |
jsr166 |
1.56 |
awaitTermination(t); |
1471 |
|
|
assertHasNoWaiters(lock, c); |
1472 |
dl |
1.6 |
} |
1473 |
|
|
|
1474 |
|
|
/** |
1475 |
|
|
* getWaitQueueLength returns number of waiting threads |
1476 |
|
|
*/ |
1477 |
jsr166 |
1.32 |
public void testGetWaitQueueLength() throws InterruptedException { |
1478 |
jsr166 |
1.56 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1479 |
jsr166 |
1.31 |
final Condition c = lock.writeLock().newCondition(); |
1480 |
jsr166 |
1.56 |
final CountDownLatch locked = new CountDownLatch(1); |
1481 |
jsr166 |
1.45 |
Thread t = newStartedThread(new CheckedRunnable() { |
1482 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
1483 |
|
|
lock.writeLock().lock(); |
1484 |
jsr166 |
1.42 |
assertEquals(0, lock.getWaitQueueLength(c)); |
1485 |
jsr166 |
1.56 |
locked.countDown(); |
1486 |
jsr166 |
1.33 |
c.await(); |
1487 |
|
|
lock.writeLock().unlock(); |
1488 |
|
|
}}); |
1489 |
dl |
1.13 |
|
1490 |
jsr166 |
1.56 |
locked.await(); |
1491 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
1492 |
jsr166 |
1.56 |
assertHasWaiters(lock, c, t); |
1493 |
jsr166 |
1.32 |
assertEquals(1, lock.getWaitQueueLength(c)); |
1494 |
|
|
c.signal(); |
1495 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
1496 |
jsr166 |
1.32 |
assertEquals(0, lock.getWaitQueueLength(c)); |
1497 |
|
|
lock.writeLock().unlock(); |
1498 |
jsr166 |
1.56 |
awaitTermination(t); |
1499 |
dl |
1.13 |
} |
1500 |
|
|
|
1501 |
|
|
/** |
1502 |
|
|
* getWaitingThreads returns only and all waiting threads |
1503 |
|
|
*/ |
1504 |
jsr166 |
1.32 |
public void testGetWaitingThreads() throws InterruptedException { |
1505 |
jsr166 |
1.35 |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1506 |
dl |
1.13 |
final Condition c = lock.writeLock().newCondition(); |
1507 |
jsr166 |
1.56 |
final CountDownLatch locked1 = new CountDownLatch(1); |
1508 |
|
|
final CountDownLatch locked2 = new CountDownLatch(1); |
1509 |
jsr166 |
1.35 |
Thread t1 = new Thread(new CheckedRunnable() { |
1510 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
1511 |
|
|
lock.writeLock().lock(); |
1512 |
jsr166 |
1.42 |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1513 |
jsr166 |
1.56 |
locked1.countDown(); |
1514 |
jsr166 |
1.33 |
c.await(); |
1515 |
|
|
lock.writeLock().unlock(); |
1516 |
|
|
}}); |
1517 |
|
|
|
1518 |
jsr166 |
1.35 |
Thread t2 = new Thread(new CheckedRunnable() { |
1519 |
jsr166 |
1.33 |
public void realRun() throws InterruptedException { |
1520 |
|
|
lock.writeLock().lock(); |
1521 |
jsr166 |
1.42 |
assertFalse(lock.getWaitingThreads(c).isEmpty()); |
1522 |
jsr166 |
1.56 |
locked2.countDown(); |
1523 |
jsr166 |
1.33 |
c.await(); |
1524 |
|
|
lock.writeLock().unlock(); |
1525 |
|
|
}}); |
1526 |
dl |
1.6 |
|
1527 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
1528 |
|
|
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1529 |
|
|
lock.writeLock().unlock(); |
1530 |
jsr166 |
1.56 |
|
1531 |
jsr166 |
1.32 |
t1.start(); |
1532 |
jsr166 |
1.56 |
locked1.await(); |
1533 |
jsr166 |
1.32 |
t2.start(); |
1534 |
jsr166 |
1.56 |
locked2.await(); |
1535 |
|
|
|
1536 |
jsr166 |
1.32 |
lock.writeLock().lock(); |
1537 |
|
|
assertTrue(lock.hasWaiters(c)); |
1538 |
|
|
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
1539 |
|
|
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
1540 |
jsr166 |
1.56 |
assertEquals(2, lock.getWaitingThreads(c).size()); |
1541 |
jsr166 |
1.32 |
c.signalAll(); |
1542 |
jsr166 |
1.56 |
assertHasNoWaiters(lock, c); |
1543 |
jsr166 |
1.32 |
lock.writeLock().unlock(); |
1544 |
jsr166 |
1.56 |
|
1545 |
|
|
awaitTermination(t1); |
1546 |
|
|
awaitTermination(t2); |
1547 |
|
|
|
1548 |
|
|
assertHasNoWaiters(lock, c); |
1549 |
dl |
1.6 |
} |
1550 |
dl |
1.13 |
|
1551 |
dl |
1.18 |
/** |
1552 |
|
|
* toString indicates current lock state |
1553 |
|
|
*/ |
1554 |
|
|
public void testToString() { |
1555 |
|
|
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1556 |
|
|
String us = lock.toString(); |
1557 |
|
|
assertTrue(us.indexOf("Write locks = 0") >= 0); |
1558 |
|
|
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1559 |
|
|
lock.writeLock().lock(); |
1560 |
|
|
String ws = lock.toString(); |
1561 |
|
|
assertTrue(ws.indexOf("Write locks = 1") >= 0); |
1562 |
|
|
assertTrue(ws.indexOf("Read locks = 0") >= 0); |
1563 |
|
|
lock.writeLock().unlock(); |
1564 |
|
|
lock.readLock().lock(); |
1565 |
|
|
lock.readLock().lock(); |
1566 |
|
|
String rs = lock.toString(); |
1567 |
|
|
assertTrue(rs.indexOf("Write locks = 0") >= 0); |
1568 |
|
|
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1569 |
|
|
} |
1570 |
|
|
|
1571 |
|
|
/** |
1572 |
|
|
* readLock.toString indicates current lock state |
1573 |
|
|
*/ |
1574 |
|
|
public void testReadLockToString() { |
1575 |
|
|
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1576 |
|
|
String us = lock.readLock().toString(); |
1577 |
|
|
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1578 |
|
|
lock.readLock().lock(); |
1579 |
|
|
lock.readLock().lock(); |
1580 |
|
|
String rs = lock.readLock().toString(); |
1581 |
|
|
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1582 |
|
|
} |
1583 |
|
|
|
1584 |
|
|
/** |
1585 |
|
|
* writeLock.toString indicates current lock state |
1586 |
|
|
*/ |
1587 |
|
|
public void testWriteLockToString() { |
1588 |
|
|
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1589 |
|
|
String us = lock.writeLock().toString(); |
1590 |
|
|
assertTrue(us.indexOf("Unlocked") >= 0); |
1591 |
|
|
lock.writeLock().lock(); |
1592 |
|
|
String ls = lock.writeLock().toString(); |
1593 |
|
|
assertTrue(ls.indexOf("Locked") >= 0); |
1594 |
|
|
} |
1595 |
|
|
|
1596 |
dl |
1.1 |
} |