1 |
dl |
1.1 |
/* |
2 |
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 |
1.39 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
jsr166 |
1.26 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
|
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* Pat Fisher, Mike Judd. |
7 |
dl |
1.1 |
*/ |
8 |
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|
9 |
jsr166 |
1.54 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
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|
11 |
jsr166 |
1.67 |
import java.util.ArrayList; |
12 |
jsr166 |
1.54 |
import java.util.Arrays; |
13 |
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import java.util.Collection; |
14 |
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import java.util.HashSet; |
15 |
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import java.util.concurrent.CountDownLatch; |
16 |
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import java.util.concurrent.CyclicBarrier; |
17 |
jsr166 |
1.67 |
import java.util.concurrent.ThreadLocalRandom; |
18 |
jsr166 |
1.50 |
import java.util.concurrent.locks.Condition; |
19 |
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import java.util.concurrent.locks.ReentrantLock; |
20 |
jsr166 |
1.54 |
|
21 |
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import junit.framework.AssertionFailedError; |
22 |
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import junit.framework.Test; |
23 |
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import junit.framework.TestSuite; |
24 |
dl |
1.1 |
|
25 |
jsr166 |
1.66 |
@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom |
26 |
dl |
1.4 |
public class ReentrantLockTest extends JSR166TestCase { |
27 |
dl |
1.1 |
public static void main(String[] args) { |
28 |
jsr166 |
1.58 |
main(suite(), args); |
29 |
dl |
1.1 |
} |
30 |
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public static Test suite() { |
31 |
jsr166 |
1.30 |
return new TestSuite(ReentrantLockTest.class); |
32 |
dl |
1.1 |
} |
33 |
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|
34 |
dl |
1.6 |
/** |
35 |
jsr166 |
1.56 |
* A checked runnable calling lockInterruptibly |
36 |
dl |
1.6 |
*/ |
37 |
jsr166 |
1.29 |
class InterruptibleLockRunnable extends CheckedRunnable { |
38 |
dl |
1.5 |
final ReentrantLock lock; |
39 |
jsr166 |
1.56 |
InterruptibleLockRunnable(ReentrantLock lock) { this.lock = lock; } |
40 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
41 |
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lock.lockInterruptibly(); |
42 |
dl |
1.5 |
} |
43 |
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} |
44 |
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|
45 |
dl |
1.6 |
/** |
46 |
jsr166 |
1.56 |
* A checked runnable calling lockInterruptibly that expects to be |
47 |
dl |
1.6 |
* interrupted |
48 |
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*/ |
49 |
jsr166 |
1.29 |
class InterruptedLockRunnable extends CheckedInterruptedRunnable { |
50 |
dl |
1.5 |
final ReentrantLock lock; |
51 |
jsr166 |
1.56 |
InterruptedLockRunnable(ReentrantLock lock) { this.lock = lock; } |
52 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
53 |
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lock.lockInterruptibly(); |
54 |
dl |
1.5 |
} |
55 |
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} |
56 |
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57 |
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/** |
58 |
dl |
1.6 |
* Subclass to expose protected methods |
59 |
dl |
1.5 |
*/ |
60 |
dl |
1.6 |
static class PublicReentrantLock extends ReentrantLock { |
61 |
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PublicReentrantLock() { super(); } |
62 |
jsr166 |
1.45 |
PublicReentrantLock(boolean fair) { super(fair); } |
63 |
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public Thread getOwner() { |
64 |
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return super.getOwner(); |
65 |
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} |
66 |
jsr166 |
1.26 |
public Collection<Thread> getQueuedThreads() { |
67 |
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return super.getQueuedThreads(); |
68 |
dl |
1.5 |
} |
69 |
jsr166 |
1.26 |
public Collection<Thread> getWaitingThreads(Condition c) { |
70 |
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return super.getWaitingThreads(c); |
71 |
dl |
1.13 |
} |
72 |
dl |
1.5 |
} |
73 |
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|
74 |
dl |
1.8 |
/** |
75 |
jsr166 |
1.45 |
* Releases write lock, checking that it had a hold count of 1. |
76 |
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*/ |
77 |
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void releaseLock(PublicReentrantLock lock) { |
78 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
79 |
jsr166 |
1.45 |
lock.unlock(); |
80 |
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assertFalse(lock.isHeldByCurrentThread()); |
81 |
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assertNotLocked(lock); |
82 |
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} |
83 |
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84 |
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/** |
85 |
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* Spin-waits until lock.hasQueuedThread(t) becomes true. |
86 |
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*/ |
87 |
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void waitForQueuedThread(PublicReentrantLock lock, Thread t) { |
88 |
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long startTime = System.nanoTime(); |
89 |
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while (!lock.hasQueuedThread(t)) { |
90 |
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if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
91 |
jsr166 |
1.47 |
throw new AssertionFailedError("timed out"); |
92 |
jsr166 |
1.45 |
Thread.yield(); |
93 |
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} |
94 |
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assertTrue(t.isAlive()); |
95 |
jsr166 |
1.52 |
assertNotSame(t, lock.getOwner()); |
96 |
jsr166 |
1.45 |
} |
97 |
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98 |
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/** |
99 |
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* Checks that lock is not locked. |
100 |
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*/ |
101 |
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void assertNotLocked(PublicReentrantLock lock) { |
102 |
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assertFalse(lock.isLocked()); |
103 |
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assertFalse(lock.isHeldByCurrentThread()); |
104 |
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assertNull(lock.getOwner()); |
105 |
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assertEquals(0, lock.getHoldCount()); |
106 |
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} |
107 |
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108 |
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/** |
109 |
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* Checks that lock is locked by the given thread. |
110 |
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*/ |
111 |
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void assertLockedBy(PublicReentrantLock lock, Thread t) { |
112 |
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assertTrue(lock.isLocked()); |
113 |
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assertSame(t, lock.getOwner()); |
114 |
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assertEquals(t == Thread.currentThread(), |
115 |
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lock.isHeldByCurrentThread()); |
116 |
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assertEquals(t == Thread.currentThread(), |
117 |
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lock.getHoldCount() > 0); |
118 |
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} |
119 |
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120 |
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/** |
121 |
jsr166 |
1.46 |
* Checks that lock is locked by the current thread. |
122 |
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*/ |
123 |
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void assertLockedByMoi(PublicReentrantLock lock) { |
124 |
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assertLockedBy(lock, Thread.currentThread()); |
125 |
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} |
126 |
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127 |
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/** |
128 |
jsr166 |
1.43 |
* Checks that condition c has no waiters. |
129 |
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*/ |
130 |
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void assertHasNoWaiters(PublicReentrantLock lock, Condition c) { |
131 |
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assertHasWaiters(lock, c, new Thread[] {}); |
132 |
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} |
133 |
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134 |
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/** |
135 |
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* Checks that condition c has exactly the given waiter threads. |
136 |
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*/ |
137 |
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void assertHasWaiters(PublicReentrantLock lock, Condition c, |
138 |
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Thread... threads) { |
139 |
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lock.lock(); |
140 |
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assertEquals(threads.length > 0, lock.hasWaiters(c)); |
141 |
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assertEquals(threads.length, lock.getWaitQueueLength(c)); |
142 |
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assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty()); |
143 |
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assertEquals(threads.length, lock.getWaitingThreads(c).size()); |
144 |
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assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)), |
145 |
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new HashSet<Thread>(Arrays.asList(threads))); |
146 |
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lock.unlock(); |
147 |
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} |
148 |
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|
149 |
jsr166 |
1.53 |
enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil } |
150 |
jsr166 |
1.46 |
|
151 |
jsr166 |
1.67 |
static AwaitMethod randomAwaitMethod() { |
152 |
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AwaitMethod[] awaitMethods = AwaitMethod.values(); |
153 |
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return awaitMethods[ThreadLocalRandom.current().nextInt(awaitMethods.length)]; |
154 |
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} |
155 |
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|
156 |
jsr166 |
1.46 |
/** |
157 |
jsr166 |
1.60 |
* Awaits condition "indefinitely" using the specified AwaitMethod. |
158 |
jsr166 |
1.46 |
*/ |
159 |
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void await(Condition c, AwaitMethod awaitMethod) |
160 |
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throws InterruptedException { |
161 |
jsr166 |
1.48 |
long timeoutMillis = 2 * LONG_DELAY_MS; |
162 |
jsr166 |
1.46 |
switch (awaitMethod) { |
163 |
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case await: |
164 |
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c.await(); |
165 |
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break; |
166 |
jsr166 |
1.48 |
case awaitTimed: |
167 |
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assertTrue(c.await(timeoutMillis, MILLISECONDS)); |
168 |
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break; |
169 |
jsr166 |
1.46 |
case awaitNanos: |
170 |
jsr166 |
1.60 |
long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis); |
171 |
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long nanosRemaining = c.awaitNanos(timeoutNanos); |
172 |
jsr166 |
1.61 |
assertTrue(nanosRemaining > timeoutNanos / 2); |
173 |
jsr166 |
1.60 |
assertTrue(nanosRemaining <= timeoutNanos); |
174 |
jsr166 |
1.46 |
break; |
175 |
|
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case awaitUntil: |
176 |
jsr166 |
1.48 |
assertTrue(c.awaitUntil(delayedDate(timeoutMillis))); |
177 |
jsr166 |
1.46 |
break; |
178 |
jsr166 |
1.55 |
default: |
179 |
|
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throw new AssertionError(); |
180 |
jsr166 |
1.46 |
} |
181 |
|
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} |
182 |
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|
183 |
jsr166 |
1.43 |
/** |
184 |
jsr166 |
1.45 |
* Constructor sets given fairness, and is in unlocked state |
185 |
dl |
1.9 |
*/ |
186 |
jsr166 |
1.26 |
public void testConstructor() { |
187 |
jsr166 |
1.45 |
PublicReentrantLock lock; |
188 |
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|
189 |
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lock = new PublicReentrantLock(); |
190 |
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assertFalse(lock.isFair()); |
191 |
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assertNotLocked(lock); |
192 |
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|
193 |
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lock = new PublicReentrantLock(true); |
194 |
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assertTrue(lock.isFair()); |
195 |
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assertNotLocked(lock); |
196 |
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|
197 |
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lock = new PublicReentrantLock(false); |
198 |
|
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assertFalse(lock.isFair()); |
199 |
|
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assertNotLocked(lock); |
200 |
dl |
1.9 |
} |
201 |
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|
202 |
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/** |
203 |
dl |
1.6 |
* locking an unlocked lock succeeds |
204 |
|
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*/ |
205 |
jsr166 |
1.46 |
public void testLock() { testLock(false); } |
206 |
|
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public void testLock_fair() { testLock(true); } |
207 |
|
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public void testLock(boolean fair) { |
208 |
|
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PublicReentrantLock lock = new PublicReentrantLock(fair); |
209 |
jsr166 |
1.45 |
lock.lock(); |
210 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
211 |
jsr166 |
1.45 |
releaseLock(lock); |
212 |
dl |
1.6 |
} |
213 |
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|
214 |
dl |
1.8 |
/** |
215 |
dl |
1.5 |
* Unlocking an unlocked lock throws IllegalMonitorStateException |
216 |
dl |
1.1 |
*/ |
217 |
jsr166 |
1.46 |
public void testUnlock_IMSE() { testUnlock_IMSE(false); } |
218 |
|
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public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); } |
219 |
|
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public void testUnlock_IMSE(boolean fair) { |
220 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
221 |
jsr166 |
1.30 |
try { |
222 |
jsr166 |
1.45 |
lock.unlock(); |
223 |
jsr166 |
1.30 |
shouldThrow(); |
224 |
|
|
} catch (IllegalMonitorStateException success) {} |
225 |
dl |
1.5 |
} |
226 |
dl |
1.1 |
|
227 |
dl |
1.8 |
/** |
228 |
dl |
1.15 |
* tryLock on an unlocked lock succeeds |
229 |
dl |
1.1 |
*/ |
230 |
jsr166 |
1.46 |
public void testTryLock() { testTryLock(false); } |
231 |
|
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public void testTryLock_fair() { testTryLock(true); } |
232 |
|
|
public void testTryLock(boolean fair) { |
233 |
|
|
PublicReentrantLock lock = new PublicReentrantLock(fair); |
234 |
|
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assertTrue(lock.tryLock()); |
235 |
|
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assertLockedByMoi(lock); |
236 |
jsr166 |
1.45 |
assertTrue(lock.tryLock()); |
237 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
238 |
|
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lock.unlock(); |
239 |
jsr166 |
1.45 |
releaseLock(lock); |
240 |
dl |
1.6 |
} |
241 |
|
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|
242 |
dl |
1.8 |
/** |
243 |
dl |
1.13 |
* hasQueuedThreads reports whether there are waiting threads |
244 |
|
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*/ |
245 |
jsr166 |
1.46 |
public void testHasQueuedThreads() { testHasQueuedThreads(false); } |
246 |
|
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public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); } |
247 |
|
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public void testHasQueuedThreads(boolean fair) { |
248 |
|
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final PublicReentrantLock lock = new PublicReentrantLock(fair); |
249 |
dl |
1.13 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
250 |
|
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
251 |
jsr166 |
1.29 |
assertFalse(lock.hasQueuedThreads()); |
252 |
|
|
lock.lock(); |
253 |
jsr166 |
1.45 |
assertFalse(lock.hasQueuedThreads()); |
254 |
jsr166 |
1.29 |
t1.start(); |
255 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t1); |
256 |
jsr166 |
1.29 |
assertTrue(lock.hasQueuedThreads()); |
257 |
|
|
t2.start(); |
258 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t2); |
259 |
jsr166 |
1.29 |
assertTrue(lock.hasQueuedThreads()); |
260 |
|
|
t1.interrupt(); |
261 |
jsr166 |
1.45 |
awaitTermination(t1); |
262 |
jsr166 |
1.29 |
assertTrue(lock.hasQueuedThreads()); |
263 |
|
|
lock.unlock(); |
264 |
jsr166 |
1.45 |
awaitTermination(t2); |
265 |
jsr166 |
1.29 |
assertFalse(lock.hasQueuedThreads()); |
266 |
jsr166 |
1.26 |
} |
267 |
dl |
1.13 |
|
268 |
|
|
/** |
269 |
dl |
1.7 |
* getQueueLength reports number of waiting threads |
270 |
dl |
1.1 |
*/ |
271 |
jsr166 |
1.46 |
public void testGetQueueLength() { testGetQueueLength(false); } |
272 |
|
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public void testGetQueueLength_fair() { testGetQueueLength(true); } |
273 |
|
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public void testGetQueueLength(boolean fair) { |
274 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
275 |
dl |
1.16 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
276 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
277 |
jsr166 |
1.29 |
assertEquals(0, lock.getQueueLength()); |
278 |
|
|
lock.lock(); |
279 |
|
|
t1.start(); |
280 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t1); |
281 |
jsr166 |
1.29 |
assertEquals(1, lock.getQueueLength()); |
282 |
|
|
t2.start(); |
283 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t2); |
284 |
jsr166 |
1.29 |
assertEquals(2, lock.getQueueLength()); |
285 |
|
|
t1.interrupt(); |
286 |
jsr166 |
1.45 |
awaitTermination(t1); |
287 |
jsr166 |
1.29 |
assertEquals(1, lock.getQueueLength()); |
288 |
|
|
lock.unlock(); |
289 |
jsr166 |
1.45 |
awaitTermination(t2); |
290 |
jsr166 |
1.29 |
assertEquals(0, lock.getQueueLength()); |
291 |
jsr166 |
1.26 |
} |
292 |
dl |
1.16 |
|
293 |
|
|
/** |
294 |
dl |
1.19 |
* hasQueuedThread(null) throws NPE |
295 |
|
|
*/ |
296 |
jsr166 |
1.46 |
public void testHasQueuedThreadNPE() { testHasQueuedThreadNPE(false); } |
297 |
|
|
public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); } |
298 |
|
|
public void testHasQueuedThreadNPE(boolean fair) { |
299 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
300 |
dl |
1.19 |
try { |
301 |
jsr166 |
1.45 |
lock.hasQueuedThread(null); |
302 |
dl |
1.19 |
shouldThrow(); |
303 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
304 |
dl |
1.19 |
} |
305 |
|
|
|
306 |
|
|
/** |
307 |
jsr166 |
1.49 |
* hasQueuedThread reports whether a thread is queued |
308 |
dl |
1.19 |
*/ |
309 |
jsr166 |
1.46 |
public void testHasQueuedThread() { testHasQueuedThread(false); } |
310 |
|
|
public void testHasQueuedThread_fair() { testHasQueuedThread(true); } |
311 |
|
|
public void testHasQueuedThread(boolean fair) { |
312 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
313 |
jsr166 |
1.45 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
314 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
315 |
|
|
assertFalse(lock.hasQueuedThread(t1)); |
316 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
317 |
|
|
lock.lock(); |
318 |
jsr166 |
1.29 |
t1.start(); |
319 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t1); |
320 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
321 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
322 |
jsr166 |
1.29 |
t2.start(); |
323 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t2); |
324 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
325 |
|
|
assertTrue(lock.hasQueuedThread(t2)); |
326 |
jsr166 |
1.29 |
t1.interrupt(); |
327 |
jsr166 |
1.42 |
awaitTermination(t1); |
328 |
jsr166 |
1.45 |
assertFalse(lock.hasQueuedThread(t1)); |
329 |
|
|
assertTrue(lock.hasQueuedThread(t2)); |
330 |
|
|
lock.unlock(); |
331 |
jsr166 |
1.42 |
awaitTermination(t2); |
332 |
jsr166 |
1.45 |
assertFalse(lock.hasQueuedThread(t1)); |
333 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
334 |
jsr166 |
1.26 |
} |
335 |
dl |
1.19 |
|
336 |
|
|
/** |
337 |
dl |
1.5 |
* getQueuedThreads includes waiting threads |
338 |
|
|
*/ |
339 |
jsr166 |
1.46 |
public void testGetQueuedThreads() { testGetQueuedThreads(false); } |
340 |
|
|
public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); } |
341 |
|
|
public void testGetQueuedThreads(boolean fair) { |
342 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
343 |
dl |
1.5 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
344 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
345 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
346 |
|
|
lock.lock(); |
347 |
|
|
assertTrue(lock.getQueuedThreads().isEmpty()); |
348 |
|
|
t1.start(); |
349 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t1); |
350 |
|
|
assertEquals(1, lock.getQueuedThreads().size()); |
351 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
352 |
|
|
t2.start(); |
353 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t2); |
354 |
|
|
assertEquals(2, lock.getQueuedThreads().size()); |
355 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
356 |
|
|
assertTrue(lock.getQueuedThreads().contains(t2)); |
357 |
|
|
t1.interrupt(); |
358 |
jsr166 |
1.45 |
awaitTermination(t1); |
359 |
jsr166 |
1.29 |
assertFalse(lock.getQueuedThreads().contains(t1)); |
360 |
|
|
assertTrue(lock.getQueuedThreads().contains(t2)); |
361 |
jsr166 |
1.45 |
assertEquals(1, lock.getQueuedThreads().size()); |
362 |
jsr166 |
1.29 |
lock.unlock(); |
363 |
jsr166 |
1.45 |
awaitTermination(t2); |
364 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
365 |
jsr166 |
1.26 |
} |
366 |
dl |
1.5 |
|
367 |
dl |
1.8 |
/** |
368 |
jsr166 |
1.49 |
* timed tryLock is interruptible |
369 |
dl |
1.5 |
*/ |
370 |
jsr166 |
1.46 |
public void testTryLock_Interruptible() { testTryLock_Interruptible(false); } |
371 |
|
|
public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); } |
372 |
|
|
public void testTryLock_Interruptible(boolean fair) { |
373 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
374 |
jsr166 |
1.30 |
lock.lock(); |
375 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
376 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
377 |
jsr166 |
1.45 |
lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS); |
378 |
jsr166 |
1.29 |
}}); |
379 |
|
|
|
380 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t); |
381 |
jsr166 |
1.29 |
t.interrupt(); |
382 |
jsr166 |
1.42 |
awaitTermination(t); |
383 |
jsr166 |
1.45 |
releaseLock(lock); |
384 |
dl |
1.1 |
} |
385 |
|
|
|
386 |
dl |
1.5 |
/** |
387 |
jsr166 |
1.45 |
* tryLock on a locked lock fails |
388 |
dl |
1.5 |
*/ |
389 |
jsr166 |
1.46 |
public void testTryLockWhenLocked() { testTryLockWhenLocked(false); } |
390 |
|
|
public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); } |
391 |
|
|
public void testTryLockWhenLocked(boolean fair) { |
392 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
393 |
jsr166 |
1.30 |
lock.lock(); |
394 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
395 |
jsr166 |
1.29 |
public void realRun() { |
396 |
jsr166 |
1.37 |
assertFalse(lock.tryLock()); |
397 |
jsr166 |
1.29 |
}}); |
398 |
|
|
|
399 |
jsr166 |
1.42 |
awaitTermination(t); |
400 |
jsr166 |
1.45 |
releaseLock(lock); |
401 |
jsr166 |
1.26 |
} |
402 |
dl |
1.3 |
|
403 |
dl |
1.5 |
/** |
404 |
dl |
1.15 |
* Timed tryLock on a locked lock times out |
405 |
dl |
1.5 |
*/ |
406 |
jsr166 |
1.46 |
public void testTryLock_Timeout() { testTryLock_Timeout(false); } |
407 |
|
|
public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); } |
408 |
|
|
public void testTryLock_Timeout(boolean fair) { |
409 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
410 |
jsr166 |
1.64 |
final long timeoutMillis = timeoutMillis(); |
411 |
jsr166 |
1.30 |
lock.lock(); |
412 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
413 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
414 |
jsr166 |
1.45 |
long startTime = System.nanoTime(); |
415 |
|
|
assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS)); |
416 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
417 |
jsr166 |
1.29 |
}}); |
418 |
|
|
|
419 |
jsr166 |
1.42 |
awaitTermination(t); |
420 |
jsr166 |
1.45 |
releaseLock(lock); |
421 |
jsr166 |
1.26 |
} |
422 |
|
|
|
423 |
dl |
1.5 |
/** |
424 |
|
|
* getHoldCount returns number of recursive holds |
425 |
|
|
*/ |
426 |
jsr166 |
1.46 |
public void testGetHoldCount() { testGetHoldCount(false); } |
427 |
|
|
public void testGetHoldCount_fair() { testGetHoldCount(true); } |
428 |
|
|
public void testGetHoldCount(boolean fair) { |
429 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
430 |
jsr166 |
1.30 |
for (int i = 1; i <= SIZE; i++) { |
431 |
|
|
lock.lock(); |
432 |
|
|
assertEquals(i, lock.getHoldCount()); |
433 |
|
|
} |
434 |
|
|
for (int i = SIZE; i > 0; i--) { |
435 |
|
|
lock.unlock(); |
436 |
jsr166 |
1.59 |
assertEquals(i - 1, lock.getHoldCount()); |
437 |
jsr166 |
1.30 |
} |
438 |
dl |
1.1 |
} |
439 |
jsr166 |
1.26 |
|
440 |
dl |
1.5 |
/** |
441 |
|
|
* isLocked is true when locked and false when not |
442 |
|
|
*/ |
443 |
jsr166 |
1.46 |
public void testIsLocked() { testIsLocked(false); } |
444 |
|
|
public void testIsLocked_fair() { testIsLocked(true); } |
445 |
|
|
public void testIsLocked(boolean fair) { |
446 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
447 |
jsr166 |
1.46 |
try { |
448 |
|
|
assertFalse(lock.isLocked()); |
449 |
|
|
lock.lock(); |
450 |
|
|
assertTrue(lock.isLocked()); |
451 |
|
|
lock.lock(); |
452 |
|
|
assertTrue(lock.isLocked()); |
453 |
|
|
lock.unlock(); |
454 |
|
|
assertTrue(lock.isLocked()); |
455 |
|
|
lock.unlock(); |
456 |
|
|
assertFalse(lock.isLocked()); |
457 |
|
|
final CyclicBarrier barrier = new CyclicBarrier(2); |
458 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
459 |
|
|
public void realRun() throws Exception { |
460 |
|
|
lock.lock(); |
461 |
|
|
assertTrue(lock.isLocked()); |
462 |
|
|
barrier.await(); |
463 |
|
|
barrier.await(); |
464 |
|
|
lock.unlock(); |
465 |
|
|
}}); |
466 |
|
|
|
467 |
|
|
barrier.await(); |
468 |
|
|
assertTrue(lock.isLocked()); |
469 |
|
|
barrier.await(); |
470 |
|
|
awaitTermination(t); |
471 |
|
|
assertFalse(lock.isLocked()); |
472 |
jsr166 |
1.57 |
} catch (Exception fail) { threadUnexpectedException(fail); } |
473 |
jsr166 |
1.26 |
} |
474 |
dl |
1.6 |
|
475 |
dl |
1.5 |
/** |
476 |
|
|
* lockInterruptibly succeeds when unlocked, else is interruptible |
477 |
|
|
*/ |
478 |
jsr166 |
1.46 |
public void testLockInterruptibly() { testLockInterruptibly(false); } |
479 |
|
|
public void testLockInterruptibly_fair() { testLockInterruptibly(true); } |
480 |
|
|
public void testLockInterruptibly(boolean fair) { |
481 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
482 |
|
|
try { |
483 |
|
|
lock.lockInterruptibly(); |
484 |
jsr166 |
1.57 |
} catch (InterruptedException fail) { threadUnexpectedException(fail); } |
485 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
486 |
jsr166 |
1.41 |
Thread t = newStartedThread(new InterruptedLockRunnable(lock)); |
487 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t); |
488 |
jsr166 |
1.29 |
t.interrupt(); |
489 |
|
|
assertTrue(lock.isLocked()); |
490 |
|
|
assertTrue(lock.isHeldByCurrentThread()); |
491 |
jsr166 |
1.42 |
awaitTermination(t); |
492 |
jsr166 |
1.45 |
releaseLock(lock); |
493 |
dl |
1.1 |
} |
494 |
dl |
1.2 |
|
495 |
dl |
1.6 |
/** |
496 |
|
|
* Calling await without holding lock throws IllegalMonitorStateException |
497 |
|
|
*/ |
498 |
jsr166 |
1.46 |
public void testAwait_IMSE() { testAwait_IMSE(false); } |
499 |
|
|
public void testAwait_IMSE_fair() { testAwait_IMSE(true); } |
500 |
|
|
public void testAwait_IMSE(boolean fair) { |
501 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
502 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
503 |
jsr166 |
1.48 |
for (AwaitMethod awaitMethod : AwaitMethod.values()) { |
504 |
|
|
long startTime = System.nanoTime(); |
505 |
jsr166 |
1.46 |
try { |
506 |
jsr166 |
1.48 |
await(c, awaitMethod); |
507 |
jsr166 |
1.46 |
shouldThrow(); |
508 |
jsr166 |
1.48 |
} catch (IllegalMonitorStateException success) { |
509 |
|
|
} catch (InterruptedException e) { threadUnexpectedException(e); } |
510 |
|
|
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
511 |
jsr166 |
1.46 |
} |
512 |
dl |
1.2 |
} |
513 |
|
|
|
514 |
dl |
1.6 |
/** |
515 |
|
|
* Calling signal without holding lock throws IllegalMonitorStateException |
516 |
|
|
*/ |
517 |
jsr166 |
1.46 |
public void testSignal_IMSE() { testSignal_IMSE(false); } |
518 |
|
|
public void testSignal_IMSE_fair() { testSignal_IMSE(true); } |
519 |
|
|
public void testSignal_IMSE(boolean fair) { |
520 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
521 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
522 |
|
|
try { |
523 |
|
|
c.signal(); |
524 |
dl |
1.6 |
shouldThrow(); |
525 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
526 |
dl |
1.2 |
} |
527 |
|
|
|
528 |
dl |
1.6 |
/** |
529 |
|
|
* awaitNanos without a signal times out |
530 |
|
|
*/ |
531 |
jsr166 |
1.46 |
public void testAwaitNanos_Timeout() { testAwaitNanos_Timeout(false); } |
532 |
|
|
public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); } |
533 |
|
|
public void testAwaitNanos_Timeout(boolean fair) { |
534 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
535 |
|
|
final Condition c = lock.newCondition(); |
536 |
|
|
final long timeoutMillis = timeoutMillis(); |
537 |
|
|
final long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis); |
538 |
|
|
lock.lock(); |
539 |
|
|
final long startTime = System.nanoTime(); |
540 |
jsr166 |
1.46 |
try { |
541 |
|
|
long nanosRemaining = c.awaitNanos(timeoutNanos); |
542 |
|
|
assertTrue(nanosRemaining <= 0); |
543 |
jsr166 |
1.57 |
} catch (InterruptedException fail) { threadUnexpectedException(fail); } |
544 |
jsr166 |
1.64 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
545 |
|
|
lock.unlock(); |
546 |
dl |
1.2 |
} |
547 |
|
|
|
548 |
dl |
1.6 |
/** |
549 |
jsr166 |
1.38 |
* timed await without a signal times out |
550 |
dl |
1.6 |
*/ |
551 |
jsr166 |
1.46 |
public void testAwait_Timeout() { testAwait_Timeout(false); } |
552 |
|
|
public void testAwait_Timeout_fair() { testAwait_Timeout(true); } |
553 |
|
|
public void testAwait_Timeout(boolean fair) { |
554 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
555 |
|
|
final Condition c = lock.newCondition(); |
556 |
|
|
final long timeoutMillis = timeoutMillis(); |
557 |
|
|
lock.lock(); |
558 |
|
|
final long startTime = System.nanoTime(); |
559 |
jsr166 |
1.46 |
try { |
560 |
|
|
assertFalse(c.await(timeoutMillis, MILLISECONDS)); |
561 |
jsr166 |
1.57 |
} catch (InterruptedException fail) { threadUnexpectedException(fail); } |
562 |
jsr166 |
1.64 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
563 |
|
|
lock.unlock(); |
564 |
dl |
1.2 |
} |
565 |
|
|
|
566 |
dl |
1.6 |
/** |
567 |
|
|
* awaitUntil without a signal times out |
568 |
|
|
*/ |
569 |
jsr166 |
1.46 |
public void testAwaitUntil_Timeout() { testAwaitUntil_Timeout(false); } |
570 |
|
|
public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); } |
571 |
|
|
public void testAwaitUntil_Timeout(boolean fair) { |
572 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
573 |
|
|
final Condition c = lock.newCondition(); |
574 |
|
|
lock.lock(); |
575 |
|
|
// We shouldn't assume that nanoTime and currentTimeMillis |
576 |
|
|
// use the same time source, so don't use nanoTime here. |
577 |
|
|
final java.util.Date delayedDate = delayedDate(timeoutMillis()); |
578 |
jsr166 |
1.46 |
try { |
579 |
jsr166 |
1.63 |
assertFalse(c.awaitUntil(delayedDate)); |
580 |
jsr166 |
1.57 |
} catch (InterruptedException fail) { threadUnexpectedException(fail); } |
581 |
jsr166 |
1.64 |
assertTrue(new java.util.Date().getTime() >= delayedDate.getTime()); |
582 |
|
|
lock.unlock(); |
583 |
dl |
1.2 |
} |
584 |
|
|
|
585 |
dl |
1.6 |
/** |
586 |
|
|
* await returns when signalled |
587 |
|
|
*/ |
588 |
jsr166 |
1.46 |
public void testAwait() { testAwait(false); } |
589 |
|
|
public void testAwait_fair() { testAwait(true); } |
590 |
|
|
public void testAwait(boolean fair) { |
591 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
592 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
593 |
jsr166 |
1.45 |
final CountDownLatch locked = new CountDownLatch(1); |
594 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
595 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
596 |
|
|
lock.lock(); |
597 |
jsr166 |
1.45 |
locked.countDown(); |
598 |
jsr166 |
1.29 |
c.await(); |
599 |
|
|
lock.unlock(); |
600 |
|
|
}}); |
601 |
dl |
1.5 |
|
602 |
jsr166 |
1.46 |
await(locked); |
603 |
jsr166 |
1.29 |
lock.lock(); |
604 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t); |
605 |
jsr166 |
1.29 |
c.signal(); |
606 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
607 |
|
|
assertTrue(t.isAlive()); |
608 |
jsr166 |
1.29 |
lock.unlock(); |
609 |
jsr166 |
1.42 |
awaitTermination(t); |
610 |
dl |
1.5 |
} |
611 |
|
|
|
612 |
dl |
1.6 |
/** |
613 |
dl |
1.14 |
* hasWaiters throws NPE if null |
614 |
|
|
*/ |
615 |
jsr166 |
1.46 |
public void testHasWaitersNPE() { testHasWaitersNPE(false); } |
616 |
|
|
public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); } |
617 |
|
|
public void testHasWaitersNPE(boolean fair) { |
618 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
619 |
dl |
1.14 |
try { |
620 |
|
|
lock.hasWaiters(null); |
621 |
|
|
shouldThrow(); |
622 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
623 |
dl |
1.14 |
} |
624 |
|
|
|
625 |
|
|
/** |
626 |
|
|
* getWaitQueueLength throws NPE if null |
627 |
|
|
*/ |
628 |
jsr166 |
1.46 |
public void testGetWaitQueueLengthNPE() { testGetWaitQueueLengthNPE(false); } |
629 |
|
|
public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); } |
630 |
|
|
public void testGetWaitQueueLengthNPE(boolean fair) { |
631 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
632 |
dl |
1.14 |
try { |
633 |
|
|
lock.getWaitQueueLength(null); |
634 |
|
|
shouldThrow(); |
635 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
636 |
dl |
1.14 |
} |
637 |
|
|
|
638 |
|
|
/** |
639 |
|
|
* getWaitingThreads throws NPE if null |
640 |
|
|
*/ |
641 |
jsr166 |
1.46 |
public void testGetWaitingThreadsNPE() { testGetWaitingThreadsNPE(false); } |
642 |
|
|
public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); } |
643 |
|
|
public void testGetWaitingThreadsNPE(boolean fair) { |
644 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
645 |
dl |
1.14 |
try { |
646 |
|
|
lock.getWaitingThreads(null); |
647 |
|
|
shouldThrow(); |
648 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
649 |
dl |
1.14 |
} |
650 |
|
|
|
651 |
|
|
/** |
652 |
jsr166 |
1.45 |
* hasWaiters throws IllegalArgumentException if not owned |
653 |
dl |
1.13 |
*/ |
654 |
jsr166 |
1.46 |
public void testHasWaitersIAE() { testHasWaitersIAE(false); } |
655 |
|
|
public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); } |
656 |
|
|
public void testHasWaitersIAE(boolean fair) { |
657 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
658 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
659 |
jsr166 |
1.46 |
final ReentrantLock lock2 = new ReentrantLock(fair); |
660 |
dl |
1.13 |
try { |
661 |
|
|
lock2.hasWaiters(c); |
662 |
|
|
shouldThrow(); |
663 |
jsr166 |
1.29 |
} catch (IllegalArgumentException success) {} |
664 |
dl |
1.13 |
} |
665 |
|
|
|
666 |
|
|
/** |
667 |
jsr166 |
1.45 |
* hasWaiters throws IllegalMonitorStateException if not locked |
668 |
dl |
1.13 |
*/ |
669 |
jsr166 |
1.46 |
public void testHasWaitersIMSE() { testHasWaitersIMSE(false); } |
670 |
|
|
public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); } |
671 |
|
|
public void testHasWaitersIMSE(boolean fair) { |
672 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
673 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
674 |
dl |
1.13 |
try { |
675 |
|
|
lock.hasWaiters(c); |
676 |
|
|
shouldThrow(); |
677 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
678 |
dl |
1.13 |
} |
679 |
|
|
|
680 |
|
|
/** |
681 |
jsr166 |
1.45 |
* getWaitQueueLength throws IllegalArgumentException if not owned |
682 |
dl |
1.13 |
*/ |
683 |
jsr166 |
1.46 |
public void testGetWaitQueueLengthIAE() { testGetWaitQueueLengthIAE(false); } |
684 |
|
|
public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); } |
685 |
|
|
public void testGetWaitQueueLengthIAE(boolean fair) { |
686 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
687 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
688 |
jsr166 |
1.46 |
final ReentrantLock lock2 = new ReentrantLock(fair); |
689 |
dl |
1.13 |
try { |
690 |
|
|
lock2.getWaitQueueLength(c); |
691 |
|
|
shouldThrow(); |
692 |
jsr166 |
1.29 |
} catch (IllegalArgumentException success) {} |
693 |
dl |
1.13 |
} |
694 |
|
|
|
695 |
|
|
/** |
696 |
jsr166 |
1.45 |
* getWaitQueueLength throws IllegalMonitorStateException if not locked |
697 |
dl |
1.13 |
*/ |
698 |
jsr166 |
1.46 |
public void testGetWaitQueueLengthIMSE() { testGetWaitQueueLengthIMSE(false); } |
699 |
|
|
public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); } |
700 |
|
|
public void testGetWaitQueueLengthIMSE(boolean fair) { |
701 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
702 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
703 |
dl |
1.13 |
try { |
704 |
|
|
lock.getWaitQueueLength(c); |
705 |
|
|
shouldThrow(); |
706 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
707 |
dl |
1.13 |
} |
708 |
|
|
|
709 |
|
|
/** |
710 |
jsr166 |
1.45 |
* getWaitingThreads throws IllegalArgumentException if not owned |
711 |
dl |
1.13 |
*/ |
712 |
jsr166 |
1.46 |
public void testGetWaitingThreadsIAE() { testGetWaitingThreadsIAE(false); } |
713 |
|
|
public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); } |
714 |
|
|
public void testGetWaitingThreadsIAE(boolean fair) { |
715 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
716 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
717 |
jsr166 |
1.46 |
final PublicReentrantLock lock2 = new PublicReentrantLock(fair); |
718 |
dl |
1.13 |
try { |
719 |
|
|
lock2.getWaitingThreads(c); |
720 |
|
|
shouldThrow(); |
721 |
jsr166 |
1.29 |
} catch (IllegalArgumentException success) {} |
722 |
dl |
1.13 |
} |
723 |
|
|
|
724 |
|
|
/** |
725 |
jsr166 |
1.45 |
* getWaitingThreads throws IllegalMonitorStateException if not locked |
726 |
dl |
1.13 |
*/ |
727 |
jsr166 |
1.46 |
public void testGetWaitingThreadsIMSE() { testGetWaitingThreadsIMSE(false); } |
728 |
|
|
public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); } |
729 |
|
|
public void testGetWaitingThreadsIMSE(boolean fair) { |
730 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
731 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
732 |
dl |
1.13 |
try { |
733 |
|
|
lock.getWaitingThreads(c); |
734 |
|
|
shouldThrow(); |
735 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
736 |
dl |
1.13 |
} |
737 |
|
|
|
738 |
|
|
/** |
739 |
dl |
1.6 |
* hasWaiters returns true when a thread is waiting, else false |
740 |
|
|
*/ |
741 |
jsr166 |
1.46 |
public void testHasWaiters() { testHasWaiters(false); } |
742 |
|
|
public void testHasWaiters_fair() { testHasWaiters(true); } |
743 |
|
|
public void testHasWaiters(boolean fair) { |
744 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
745 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
746 |
jsr166 |
1.51 |
final CountDownLatch pleaseSignal = new CountDownLatch(1); |
747 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
748 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
749 |
|
|
lock.lock(); |
750 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
751 |
jsr166 |
1.37 |
assertFalse(lock.hasWaiters(c)); |
752 |
jsr166 |
1.51 |
pleaseSignal.countDown(); |
753 |
jsr166 |
1.29 |
c.await(); |
754 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
755 |
|
|
assertFalse(lock.hasWaiters(c)); |
756 |
jsr166 |
1.29 |
lock.unlock(); |
757 |
|
|
}}); |
758 |
dl |
1.2 |
|
759 |
jsr166 |
1.51 |
await(pleaseSignal); |
760 |
jsr166 |
1.29 |
lock.lock(); |
761 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t); |
762 |
jsr166 |
1.29 |
assertTrue(lock.hasWaiters(c)); |
763 |
|
|
c.signal(); |
764 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
765 |
jsr166 |
1.29 |
assertFalse(lock.hasWaiters(c)); |
766 |
|
|
lock.unlock(); |
767 |
jsr166 |
1.42 |
awaitTermination(t); |
768 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
769 |
dl |
1.5 |
} |
770 |
|
|
|
771 |
dl |
1.6 |
/** |
772 |
|
|
* getWaitQueueLength returns number of waiting threads |
773 |
|
|
*/ |
774 |
jsr166 |
1.46 |
public void testGetWaitQueueLength() { testGetWaitQueueLength(false); } |
775 |
|
|
public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); } |
776 |
|
|
public void testGetWaitQueueLength(boolean fair) { |
777 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
778 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
779 |
jsr166 |
1.45 |
final CountDownLatch locked1 = new CountDownLatch(1); |
780 |
|
|
final CountDownLatch locked2 = new CountDownLatch(1); |
781 |
|
|
Thread t1 = new Thread(new CheckedRunnable() { |
782 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
783 |
|
|
lock.lock(); |
784 |
jsr166 |
1.37 |
assertFalse(lock.hasWaiters(c)); |
785 |
|
|
assertEquals(0, lock.getWaitQueueLength(c)); |
786 |
jsr166 |
1.45 |
locked1.countDown(); |
787 |
jsr166 |
1.29 |
c.await(); |
788 |
|
|
lock.unlock(); |
789 |
|
|
}}); |
790 |
dl |
1.13 |
|
791 |
jsr166 |
1.45 |
Thread t2 = new Thread(new CheckedRunnable() { |
792 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
793 |
|
|
lock.lock(); |
794 |
jsr166 |
1.37 |
assertTrue(lock.hasWaiters(c)); |
795 |
|
|
assertEquals(1, lock.getWaitQueueLength(c)); |
796 |
jsr166 |
1.45 |
locked2.countDown(); |
797 |
jsr166 |
1.29 |
c.await(); |
798 |
|
|
lock.unlock(); |
799 |
|
|
}}); |
800 |
|
|
|
801 |
|
|
lock.lock(); |
802 |
jsr166 |
1.45 |
assertEquals(0, lock.getWaitQueueLength(c)); |
803 |
|
|
lock.unlock(); |
804 |
|
|
|
805 |
|
|
t1.start(); |
806 |
jsr166 |
1.46 |
await(locked1); |
807 |
jsr166 |
1.45 |
|
808 |
|
|
lock.lock(); |
809 |
|
|
assertHasWaiters(lock, c, t1); |
810 |
|
|
assertEquals(1, lock.getWaitQueueLength(c)); |
811 |
|
|
lock.unlock(); |
812 |
|
|
|
813 |
|
|
t2.start(); |
814 |
jsr166 |
1.46 |
await(locked2); |
815 |
jsr166 |
1.45 |
|
816 |
|
|
lock.lock(); |
817 |
|
|
assertHasWaiters(lock, c, t1, t2); |
818 |
jsr166 |
1.29 |
assertEquals(2, lock.getWaitQueueLength(c)); |
819 |
|
|
c.signalAll(); |
820 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
821 |
jsr166 |
1.29 |
lock.unlock(); |
822 |
jsr166 |
1.45 |
|
823 |
jsr166 |
1.42 |
awaitTermination(t1); |
824 |
|
|
awaitTermination(t2); |
825 |
jsr166 |
1.45 |
|
826 |
|
|
assertHasNoWaiters(lock, c); |
827 |
dl |
1.13 |
} |
828 |
|
|
|
829 |
|
|
/** |
830 |
|
|
* getWaitingThreads returns only and all waiting threads |
831 |
|
|
*/ |
832 |
jsr166 |
1.46 |
public void testGetWaitingThreads() { testGetWaitingThreads(false); } |
833 |
|
|
public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); } |
834 |
|
|
public void testGetWaitingThreads(boolean fair) { |
835 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
836 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
837 |
jsr166 |
1.45 |
final CountDownLatch locked1 = new CountDownLatch(1); |
838 |
|
|
final CountDownLatch locked2 = new CountDownLatch(1); |
839 |
jsr166 |
1.30 |
Thread t1 = new Thread(new CheckedRunnable() { |
840 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
841 |
|
|
lock.lock(); |
842 |
jsr166 |
1.37 |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
843 |
jsr166 |
1.45 |
locked1.countDown(); |
844 |
jsr166 |
1.29 |
c.await(); |
845 |
|
|
lock.unlock(); |
846 |
|
|
}}); |
847 |
|
|
|
848 |
jsr166 |
1.30 |
Thread t2 = new Thread(new CheckedRunnable() { |
849 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
850 |
|
|
lock.lock(); |
851 |
jsr166 |
1.37 |
assertFalse(lock.getWaitingThreads(c).isEmpty()); |
852 |
jsr166 |
1.45 |
locked2.countDown(); |
853 |
jsr166 |
1.29 |
c.await(); |
854 |
|
|
lock.unlock(); |
855 |
|
|
}}); |
856 |
dl |
1.5 |
|
857 |
jsr166 |
1.29 |
lock.lock(); |
858 |
|
|
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
859 |
|
|
lock.unlock(); |
860 |
jsr166 |
1.45 |
|
861 |
jsr166 |
1.29 |
t1.start(); |
862 |
jsr166 |
1.46 |
await(locked1); |
863 |
jsr166 |
1.45 |
|
864 |
|
|
lock.lock(); |
865 |
|
|
assertHasWaiters(lock, c, t1); |
866 |
|
|
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
867 |
|
|
assertFalse(lock.getWaitingThreads(c).contains(t2)); |
868 |
|
|
assertEquals(1, lock.getWaitingThreads(c).size()); |
869 |
|
|
lock.unlock(); |
870 |
|
|
|
871 |
jsr166 |
1.29 |
t2.start(); |
872 |
jsr166 |
1.46 |
await(locked2); |
873 |
jsr166 |
1.45 |
|
874 |
jsr166 |
1.29 |
lock.lock(); |
875 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t1, t2); |
876 |
jsr166 |
1.29 |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
877 |
|
|
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
878 |
jsr166 |
1.45 |
assertEquals(2, lock.getWaitingThreads(c).size()); |
879 |
jsr166 |
1.29 |
c.signalAll(); |
880 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
881 |
jsr166 |
1.29 |
lock.unlock(); |
882 |
jsr166 |
1.45 |
|
883 |
jsr166 |
1.42 |
awaitTermination(t1); |
884 |
|
|
awaitTermination(t2); |
885 |
jsr166 |
1.26 |
|
886 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
887 |
dl |
1.22 |
} |
888 |
dl |
1.2 |
|
889 |
dl |
1.6 |
/** |
890 |
jsr166 |
1.51 |
* awaitUninterruptibly is uninterruptible |
891 |
dl |
1.6 |
*/ |
892 |
jsr166 |
1.46 |
public void testAwaitUninterruptibly() { testAwaitUninterruptibly(false); } |
893 |
|
|
public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); } |
894 |
|
|
public void testAwaitUninterruptibly(boolean fair) { |
895 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
896 |
jsr166 |
1.65 |
final Condition condition = lock.newCondition(); |
897 |
jsr166 |
1.51 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(2); |
898 |
|
|
|
899 |
|
|
Thread t1 = newStartedThread(new CheckedRunnable() { |
900 |
|
|
public void realRun() { |
901 |
|
|
// Interrupt before awaitUninterruptibly |
902 |
|
|
lock.lock(); |
903 |
|
|
pleaseInterrupt.countDown(); |
904 |
|
|
Thread.currentThread().interrupt(); |
905 |
jsr166 |
1.65 |
condition.awaitUninterruptibly(); |
906 |
jsr166 |
1.51 |
assertTrue(Thread.interrupted()); |
907 |
|
|
lock.unlock(); |
908 |
|
|
}}); |
909 |
|
|
|
910 |
|
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
911 |
jsr166 |
1.45 |
public void realRun() { |
912 |
jsr166 |
1.51 |
// Interrupt during awaitUninterruptibly |
913 |
jsr166 |
1.45 |
lock.lock(); |
914 |
jsr166 |
1.51 |
pleaseInterrupt.countDown(); |
915 |
jsr166 |
1.65 |
condition.awaitUninterruptibly(); |
916 |
jsr166 |
1.45 |
assertTrue(Thread.interrupted()); |
917 |
|
|
lock.unlock(); |
918 |
|
|
}}); |
919 |
dl |
1.22 |
|
920 |
jsr166 |
1.51 |
await(pleaseInterrupt); |
921 |
jsr166 |
1.65 |
t2.interrupt(); |
922 |
jsr166 |
1.45 |
lock.lock(); |
923 |
|
|
lock.unlock(); |
924 |
jsr166 |
1.65 |
assertThreadBlocks(t1, Thread.State.WAITING); |
925 |
|
|
assertThreadBlocks(t2, Thread.State.WAITING); |
926 |
jsr166 |
1.51 |
|
927 |
jsr166 |
1.29 |
lock.lock(); |
928 |
jsr166 |
1.65 |
condition.signalAll(); |
929 |
jsr166 |
1.45 |
lock.unlock(); |
930 |
jsr166 |
1.51 |
|
931 |
|
|
awaitTermination(t1); |
932 |
|
|
awaitTermination(t2); |
933 |
dl |
1.2 |
} |
934 |
|
|
|
935 |
dl |
1.6 |
/** |
936 |
jsr166 |
1.46 |
* await/awaitNanos/awaitUntil is interruptible |
937 |
dl |
1.6 |
*/ |
938 |
jsr166 |
1.46 |
public void testInterruptible_await() { testInterruptible(false, AwaitMethod.await); } |
939 |
|
|
public void testInterruptible_await_fair() { testInterruptible(true, AwaitMethod.await); } |
940 |
jsr166 |
1.48 |
public void testInterruptible_awaitTimed() { testInterruptible(false, AwaitMethod.awaitTimed); } |
941 |
|
|
public void testInterruptible_awaitTimed_fair() { testInterruptible(true, AwaitMethod.awaitTimed); } |
942 |
jsr166 |
1.46 |
public void testInterruptible_awaitNanos() { testInterruptible(false, AwaitMethod.awaitNanos); } |
943 |
|
|
public void testInterruptible_awaitNanos_fair() { testInterruptible(true, AwaitMethod.awaitNanos); } |
944 |
|
|
public void testInterruptible_awaitUntil() { testInterruptible(false, AwaitMethod.awaitUntil); } |
945 |
|
|
public void testInterruptible_awaitUntil_fair() { testInterruptible(true, AwaitMethod.awaitUntil); } |
946 |
|
|
public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) { |
947 |
|
|
final PublicReentrantLock lock = |
948 |
|
|
new PublicReentrantLock(fair); |
949 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
950 |
jsr166 |
1.51 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
951 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
952 |
jsr166 |
1.30 |
public void realRun() throws InterruptedException { |
953 |
jsr166 |
1.29 |
lock.lock(); |
954 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
955 |
jsr166 |
1.43 |
assertHasNoWaiters(lock, c); |
956 |
jsr166 |
1.51 |
pleaseInterrupt.countDown(); |
957 |
jsr166 |
1.43 |
try { |
958 |
jsr166 |
1.46 |
await(c, awaitMethod); |
959 |
jsr166 |
1.43 |
} finally { |
960 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
961 |
jsr166 |
1.43 |
assertHasNoWaiters(lock, c); |
962 |
|
|
lock.unlock(); |
963 |
|
|
assertFalse(Thread.interrupted()); |
964 |
|
|
} |
965 |
jsr166 |
1.29 |
}}); |
966 |
|
|
|
967 |
jsr166 |
1.51 |
await(pleaseInterrupt); |
968 |
jsr166 |
1.43 |
assertHasWaiters(lock, c, t); |
969 |
jsr166 |
1.29 |
t.interrupt(); |
970 |
jsr166 |
1.42 |
awaitTermination(t); |
971 |
jsr166 |
1.46 |
assertNotLocked(lock); |
972 |
dl |
1.2 |
} |
973 |
|
|
|
974 |
dl |
1.6 |
/** |
975 |
jsr166 |
1.46 |
* signalAll wakes up all threads |
976 |
dl |
1.6 |
*/ |
977 |
jsr166 |
1.46 |
public void testSignalAll_await() { testSignalAll(false, AwaitMethod.await); } |
978 |
|
|
public void testSignalAll_await_fair() { testSignalAll(true, AwaitMethod.await); } |
979 |
jsr166 |
1.48 |
public void testSignalAll_awaitTimed() { testSignalAll(false, AwaitMethod.awaitTimed); } |
980 |
|
|
public void testSignalAll_awaitTimed_fair() { testSignalAll(true, AwaitMethod.awaitTimed); } |
981 |
jsr166 |
1.46 |
public void testSignalAll_awaitNanos() { testSignalAll(false, AwaitMethod.awaitNanos); } |
982 |
|
|
public void testSignalAll_awaitNanos_fair() { testSignalAll(true, AwaitMethod.awaitNanos); } |
983 |
|
|
public void testSignalAll_awaitUntil() { testSignalAll(false, AwaitMethod.awaitUntil); } |
984 |
|
|
public void testSignalAll_awaitUntil_fair() { testSignalAll(true, AwaitMethod.awaitUntil); } |
985 |
|
|
public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) { |
986 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
987 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
988 |
jsr166 |
1.51 |
final CountDownLatch pleaseSignal = new CountDownLatch(2); |
989 |
jsr166 |
1.46 |
class Awaiter extends CheckedRunnable { |
990 |
jsr166 |
1.30 |
public void realRun() throws InterruptedException { |
991 |
jsr166 |
1.29 |
lock.lock(); |
992 |
jsr166 |
1.51 |
pleaseSignal.countDown(); |
993 |
jsr166 |
1.46 |
await(c, awaitMethod); |
994 |
|
|
lock.unlock(); |
995 |
|
|
} |
996 |
|
|
} |
997 |
jsr166 |
1.29 |
|
998 |
jsr166 |
1.46 |
Thread t1 = newStartedThread(new Awaiter()); |
999 |
|
|
Thread t2 = newStartedThread(new Awaiter()); |
1000 |
dl |
1.2 |
|
1001 |
jsr166 |
1.51 |
await(pleaseSignal); |
1002 |
jsr166 |
1.46 |
lock.lock(); |
1003 |
|
|
assertHasWaiters(lock, c, t1, t2); |
1004 |
|
|
c.signalAll(); |
1005 |
|
|
assertHasNoWaiters(lock, c); |
1006 |
|
|
lock.unlock(); |
1007 |
|
|
awaitTermination(t1); |
1008 |
|
|
awaitTermination(t2); |
1009 |
dl |
1.2 |
} |
1010 |
|
|
|
1011 |
dl |
1.6 |
/** |
1012 |
jsr166 |
1.49 |
* signal wakes up waiting threads in FIFO order |
1013 |
dl |
1.6 |
*/ |
1014 |
jsr166 |
1.46 |
public void testSignalWakesFifo() { testSignalWakesFifo(false); } |
1015 |
|
|
public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); } |
1016 |
|
|
public void testSignalWakesFifo(boolean fair) { |
1017 |
|
|
final PublicReentrantLock lock = |
1018 |
|
|
new PublicReentrantLock(fair); |
1019 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
1020 |
jsr166 |
1.46 |
final CountDownLatch locked1 = new CountDownLatch(1); |
1021 |
|
|
final CountDownLatch locked2 = new CountDownLatch(1); |
1022 |
jsr166 |
1.41 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
1023 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
1024 |
|
|
lock.lock(); |
1025 |
jsr166 |
1.46 |
locked1.countDown(); |
1026 |
jsr166 |
1.29 |
c.await(); |
1027 |
|
|
lock.unlock(); |
1028 |
|
|
}}); |
1029 |
|
|
|
1030 |
jsr166 |
1.46 |
await(locked1); |
1031 |
|
|
|
1032 |
jsr166 |
1.41 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
1033 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
1034 |
|
|
lock.lock(); |
1035 |
jsr166 |
1.46 |
locked2.countDown(); |
1036 |
jsr166 |
1.29 |
c.await(); |
1037 |
|
|
lock.unlock(); |
1038 |
|
|
}}); |
1039 |
dl |
1.2 |
|
1040 |
jsr166 |
1.46 |
await(locked2); |
1041 |
|
|
|
1042 |
jsr166 |
1.29 |
lock.lock(); |
1043 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t1, t2); |
1044 |
jsr166 |
1.46 |
assertFalse(lock.hasQueuedThreads()); |
1045 |
|
|
c.signal(); |
1046 |
|
|
assertHasWaiters(lock, c, t2); |
1047 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
1048 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
1049 |
|
|
c.signal(); |
1050 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
1051 |
jsr166 |
1.46 |
assertTrue(lock.hasQueuedThread(t1)); |
1052 |
|
|
assertTrue(lock.hasQueuedThread(t2)); |
1053 |
jsr166 |
1.29 |
lock.unlock(); |
1054 |
jsr166 |
1.42 |
awaitTermination(t1); |
1055 |
|
|
awaitTermination(t2); |
1056 |
dl |
1.3 |
} |
1057 |
|
|
|
1058 |
dl |
1.6 |
/** |
1059 |
dl |
1.23 |
* await after multiple reentrant locking preserves lock count |
1060 |
|
|
*/ |
1061 |
jsr166 |
1.46 |
public void testAwaitLockCount() { testAwaitLockCount(false); } |
1062 |
|
|
public void testAwaitLockCount_fair() { testAwaitLockCount(true); } |
1063 |
|
|
public void testAwaitLockCount(boolean fair) { |
1064 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
1065 |
dl |
1.23 |
final Condition c = lock.newCondition(); |
1066 |
jsr166 |
1.51 |
final CountDownLatch pleaseSignal = new CountDownLatch(2); |
1067 |
jsr166 |
1.41 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
1068 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
1069 |
|
|
lock.lock(); |
1070 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
1071 |
jsr166 |
1.37 |
assertEquals(1, lock.getHoldCount()); |
1072 |
jsr166 |
1.51 |
pleaseSignal.countDown(); |
1073 |
jsr166 |
1.29 |
c.await(); |
1074 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
1075 |
jsr166 |
1.37 |
assertEquals(1, lock.getHoldCount()); |
1076 |
jsr166 |
1.29 |
lock.unlock(); |
1077 |
|
|
}}); |
1078 |
dl |
1.23 |
|
1079 |
jsr166 |
1.41 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
1080 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
1081 |
|
|
lock.lock(); |
1082 |
|
|
lock.lock(); |
1083 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
1084 |
jsr166 |
1.37 |
assertEquals(2, lock.getHoldCount()); |
1085 |
jsr166 |
1.51 |
pleaseSignal.countDown(); |
1086 |
jsr166 |
1.29 |
c.await(); |
1087 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
1088 |
jsr166 |
1.37 |
assertEquals(2, lock.getHoldCount()); |
1089 |
jsr166 |
1.29 |
lock.unlock(); |
1090 |
|
|
lock.unlock(); |
1091 |
|
|
}}); |
1092 |
|
|
|
1093 |
jsr166 |
1.51 |
await(pleaseSignal); |
1094 |
jsr166 |
1.29 |
lock.lock(); |
1095 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t1, t2); |
1096 |
|
|
assertEquals(1, lock.getHoldCount()); |
1097 |
jsr166 |
1.29 |
c.signalAll(); |
1098 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
1099 |
jsr166 |
1.29 |
lock.unlock(); |
1100 |
jsr166 |
1.42 |
awaitTermination(t1); |
1101 |
|
|
awaitTermination(t2); |
1102 |
dl |
1.23 |
} |
1103 |
|
|
|
1104 |
|
|
/** |
1105 |
dl |
1.6 |
* A serialized lock deserializes as unlocked |
1106 |
|
|
*/ |
1107 |
jsr166 |
1.46 |
public void testSerialization() { testSerialization(false); } |
1108 |
|
|
public void testSerialization_fair() { testSerialization(true); } |
1109 |
|
|
public void testSerialization(boolean fair) { |
1110 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
1111 |
jsr166 |
1.46 |
lock.lock(); |
1112 |
|
|
|
1113 |
|
|
ReentrantLock clone = serialClone(lock); |
1114 |
|
|
assertEquals(lock.isFair(), clone.isFair()); |
1115 |
|
|
assertTrue(lock.isLocked()); |
1116 |
|
|
assertFalse(clone.isLocked()); |
1117 |
|
|
assertEquals(1, lock.getHoldCount()); |
1118 |
|
|
assertEquals(0, clone.getHoldCount()); |
1119 |
|
|
clone.lock(); |
1120 |
|
|
clone.lock(); |
1121 |
|
|
assertTrue(clone.isLocked()); |
1122 |
|
|
assertEquals(2, clone.getHoldCount()); |
1123 |
|
|
assertEquals(1, lock.getHoldCount()); |
1124 |
|
|
clone.unlock(); |
1125 |
|
|
clone.unlock(); |
1126 |
|
|
assertTrue(lock.isLocked()); |
1127 |
|
|
assertFalse(clone.isLocked()); |
1128 |
dl |
1.2 |
} |
1129 |
dl |
1.1 |
|
1130 |
dl |
1.18 |
/** |
1131 |
|
|
* toString indicates current lock state |
1132 |
|
|
*/ |
1133 |
jsr166 |
1.46 |
public void testToString() { testToString(false); } |
1134 |
|
|
public void testToString_fair() { testToString(true); } |
1135 |
|
|
public void testToString(boolean fair) { |
1136 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
1137 |
jsr166 |
1.49 |
assertTrue(lock.toString().contains("Unlocked")); |
1138 |
dl |
1.18 |
lock.lock(); |
1139 |
jsr166 |
1.64 |
assertTrue(lock.toString().contains("Locked by")); |
1140 |
jsr166 |
1.49 |
lock.unlock(); |
1141 |
|
|
assertTrue(lock.toString().contains("Unlocked")); |
1142 |
dl |
1.18 |
} |
1143 |
jsr166 |
1.67 |
|
1144 |
|
|
/** |
1145 |
|
|
* Tests scenario for JDK-8187408 |
1146 |
|
|
* AbstractQueuedSynchronizer wait queue corrupted when thread awaits without holding the lock |
1147 |
|
|
*/ |
1148 |
|
|
public void testBug8187408() throws InterruptedException { |
1149 |
|
|
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
1150 |
|
|
final AwaitMethod awaitMethod = randomAwaitMethod(); |
1151 |
|
|
final int nThreads = rnd.nextInt(2, 10); |
1152 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
1153 |
|
|
final Condition cond = lock.newCondition(); |
1154 |
|
|
final CountDownLatch done = new CountDownLatch(nThreads); |
1155 |
|
|
final ArrayList<Thread> threads = new ArrayList<>(); |
1156 |
|
|
|
1157 |
|
|
Runnable rogue = () -> { |
1158 |
|
|
while (done.getCount() > 0) { |
1159 |
|
|
try { |
1160 |
|
|
// call await without holding lock?! |
1161 |
|
|
await(cond, awaitMethod); |
1162 |
|
|
throw new AssertionError("should throw"); |
1163 |
|
|
} |
1164 |
|
|
catch (IllegalMonitorStateException expected) {} |
1165 |
|
|
catch (Throwable fail) { threadUnexpectedException(fail); }}}; |
1166 |
|
|
Thread rogueThread = new Thread(rogue, "rogue"); |
1167 |
|
|
threads.add(rogueThread); |
1168 |
|
|
rogueThread.start(); |
1169 |
|
|
|
1170 |
|
|
Runnable waiter = () -> { |
1171 |
|
|
lock.lock(); |
1172 |
|
|
try { |
1173 |
|
|
done.countDown(); |
1174 |
|
|
cond.await(); |
1175 |
|
|
} catch (Throwable fail) { |
1176 |
|
|
threadUnexpectedException(fail); |
1177 |
|
|
} finally { |
1178 |
|
|
lock.unlock(); |
1179 |
|
|
}}; |
1180 |
|
|
for (int i = 0; i < nThreads; i++) { |
1181 |
|
|
Thread thread = new Thread(waiter, "waiter"); |
1182 |
|
|
threads.add(thread); |
1183 |
|
|
thread.start(); |
1184 |
|
|
} |
1185 |
|
|
|
1186 |
|
|
assertTrue(done.await(LONG_DELAY_MS, MILLISECONDS)); |
1187 |
|
|
lock.lock(); |
1188 |
|
|
try { |
1189 |
|
|
assertEquals(nThreads, lock.getWaitQueueLength(cond)); |
1190 |
|
|
} finally { |
1191 |
|
|
cond.signalAll(); |
1192 |
|
|
lock.unlock(); |
1193 |
|
|
} |
1194 |
|
|
for (Thread thread : threads) { |
1195 |
|
|
thread.join(LONG_DELAY_MS); |
1196 |
|
|
assertFalse(thread.isAlive()); |
1197 |
|
|
} |
1198 |
|
|
} |
1199 |
dl |
1.1 |
} |