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.Test; |
22 |
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import junit.framework.TestSuite; |
23 |
dl |
1.1 |
|
24 |
jsr166 |
1.66 |
@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom |
25 |
dl |
1.4 |
public class ReentrantLockTest extends JSR166TestCase { |
26 |
dl |
1.1 |
public static void main(String[] args) { |
27 |
jsr166 |
1.58 |
main(suite(), args); |
28 |
dl |
1.1 |
} |
29 |
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public static Test suite() { |
30 |
jsr166 |
1.30 |
return new TestSuite(ReentrantLockTest.class); |
31 |
dl |
1.1 |
} |
32 |
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|
33 |
dl |
1.6 |
/** |
34 |
jsr166 |
1.56 |
* A checked runnable calling lockInterruptibly |
35 |
dl |
1.6 |
*/ |
36 |
jsr166 |
1.29 |
class InterruptibleLockRunnable extends CheckedRunnable { |
37 |
dl |
1.5 |
final ReentrantLock lock; |
38 |
jsr166 |
1.56 |
InterruptibleLockRunnable(ReentrantLock lock) { this.lock = lock; } |
39 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
40 |
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lock.lockInterruptibly(); |
41 |
dl |
1.5 |
} |
42 |
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} |
43 |
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|
44 |
dl |
1.6 |
/** |
45 |
jsr166 |
1.56 |
* A checked runnable calling lockInterruptibly that expects to be |
46 |
dl |
1.6 |
* interrupted |
47 |
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*/ |
48 |
jsr166 |
1.29 |
class InterruptedLockRunnable extends CheckedInterruptedRunnable { |
49 |
dl |
1.5 |
final ReentrantLock lock; |
50 |
jsr166 |
1.56 |
InterruptedLockRunnable(ReentrantLock lock) { this.lock = lock; } |
51 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
52 |
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lock.lockInterruptibly(); |
53 |
dl |
1.5 |
} |
54 |
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} |
55 |
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56 |
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/** |
57 |
dl |
1.6 |
* Subclass to expose protected methods |
58 |
dl |
1.5 |
*/ |
59 |
dl |
1.6 |
static class PublicReentrantLock extends ReentrantLock { |
60 |
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PublicReentrantLock() { super(); } |
61 |
jsr166 |
1.45 |
PublicReentrantLock(boolean fair) { super(fair); } |
62 |
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public Thread getOwner() { |
63 |
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return super.getOwner(); |
64 |
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} |
65 |
jsr166 |
1.26 |
public Collection<Thread> getQueuedThreads() { |
66 |
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return super.getQueuedThreads(); |
67 |
dl |
1.5 |
} |
68 |
jsr166 |
1.26 |
public Collection<Thread> getWaitingThreads(Condition c) { |
69 |
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return super.getWaitingThreads(c); |
70 |
dl |
1.13 |
} |
71 |
dl |
1.5 |
} |
72 |
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|
73 |
dl |
1.8 |
/** |
74 |
jsr166 |
1.45 |
* Releases write lock, checking that it had a hold count of 1. |
75 |
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*/ |
76 |
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void releaseLock(PublicReentrantLock lock) { |
77 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
78 |
jsr166 |
1.45 |
lock.unlock(); |
79 |
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assertFalse(lock.isHeldByCurrentThread()); |
80 |
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assertNotLocked(lock); |
81 |
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} |
82 |
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83 |
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/** |
84 |
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* Spin-waits until lock.hasQueuedThread(t) becomes true. |
85 |
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*/ |
86 |
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void waitForQueuedThread(PublicReentrantLock lock, Thread t) { |
87 |
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long startTime = System.nanoTime(); |
88 |
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while (!lock.hasQueuedThread(t)) { |
89 |
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if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
90 |
jsr166 |
1.68 |
throw new AssertionError("timed out"); |
91 |
jsr166 |
1.45 |
Thread.yield(); |
92 |
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} |
93 |
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assertTrue(t.isAlive()); |
94 |
jsr166 |
1.52 |
assertNotSame(t, lock.getOwner()); |
95 |
jsr166 |
1.45 |
} |
96 |
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97 |
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/** |
98 |
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* Checks that lock is not locked. |
99 |
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*/ |
100 |
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void assertNotLocked(PublicReentrantLock lock) { |
101 |
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assertFalse(lock.isLocked()); |
102 |
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assertFalse(lock.isHeldByCurrentThread()); |
103 |
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assertNull(lock.getOwner()); |
104 |
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assertEquals(0, lock.getHoldCount()); |
105 |
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} |
106 |
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107 |
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/** |
108 |
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* Checks that lock is locked by the given thread. |
109 |
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*/ |
110 |
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void assertLockedBy(PublicReentrantLock lock, Thread t) { |
111 |
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assertTrue(lock.isLocked()); |
112 |
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assertSame(t, lock.getOwner()); |
113 |
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assertEquals(t == Thread.currentThread(), |
114 |
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lock.isHeldByCurrentThread()); |
115 |
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assertEquals(t == Thread.currentThread(), |
116 |
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lock.getHoldCount() > 0); |
117 |
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} |
118 |
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119 |
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/** |
120 |
jsr166 |
1.46 |
* Checks that lock is locked by the current thread. |
121 |
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*/ |
122 |
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void assertLockedByMoi(PublicReentrantLock lock) { |
123 |
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assertLockedBy(lock, Thread.currentThread()); |
124 |
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} |
125 |
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126 |
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/** |
127 |
jsr166 |
1.43 |
* Checks that condition c has no waiters. |
128 |
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*/ |
129 |
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void assertHasNoWaiters(PublicReentrantLock lock, Condition c) { |
130 |
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assertHasWaiters(lock, c, new Thread[] {}); |
131 |
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} |
132 |
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133 |
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/** |
134 |
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* Checks that condition c has exactly the given waiter threads. |
135 |
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*/ |
136 |
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void assertHasWaiters(PublicReentrantLock lock, Condition c, |
137 |
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Thread... threads) { |
138 |
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lock.lock(); |
139 |
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assertEquals(threads.length > 0, lock.hasWaiters(c)); |
140 |
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assertEquals(threads.length, lock.getWaitQueueLength(c)); |
141 |
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assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty()); |
142 |
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assertEquals(threads.length, lock.getWaitingThreads(c).size()); |
143 |
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assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)), |
144 |
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new HashSet<Thread>(Arrays.asList(threads))); |
145 |
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lock.unlock(); |
146 |
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} |
147 |
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|
148 |
jsr166 |
1.53 |
enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil } |
149 |
jsr166 |
1.46 |
|
150 |
jsr166 |
1.67 |
static AwaitMethod randomAwaitMethod() { |
151 |
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AwaitMethod[] awaitMethods = AwaitMethod.values(); |
152 |
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return awaitMethods[ThreadLocalRandom.current().nextInt(awaitMethods.length)]; |
153 |
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} |
154 |
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|
155 |
jsr166 |
1.46 |
/** |
156 |
jsr166 |
1.60 |
* Awaits condition "indefinitely" using the specified AwaitMethod. |
157 |
jsr166 |
1.46 |
*/ |
158 |
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void await(Condition c, AwaitMethod awaitMethod) |
159 |
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throws InterruptedException { |
160 |
jsr166 |
1.48 |
long timeoutMillis = 2 * LONG_DELAY_MS; |
161 |
jsr166 |
1.46 |
switch (awaitMethod) { |
162 |
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case await: |
163 |
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c.await(); |
164 |
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break; |
165 |
jsr166 |
1.48 |
case awaitTimed: |
166 |
|
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assertTrue(c.await(timeoutMillis, MILLISECONDS)); |
167 |
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break; |
168 |
jsr166 |
1.46 |
case awaitNanos: |
169 |
jsr166 |
1.60 |
long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis); |
170 |
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long nanosRemaining = c.awaitNanos(timeoutNanos); |
171 |
jsr166 |
1.61 |
assertTrue(nanosRemaining > timeoutNanos / 2); |
172 |
jsr166 |
1.60 |
assertTrue(nanosRemaining <= timeoutNanos); |
173 |
jsr166 |
1.46 |
break; |
174 |
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case awaitUntil: |
175 |
jsr166 |
1.48 |
assertTrue(c.awaitUntil(delayedDate(timeoutMillis))); |
176 |
jsr166 |
1.46 |
break; |
177 |
jsr166 |
1.55 |
default: |
178 |
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throw new AssertionError(); |
179 |
jsr166 |
1.46 |
} |
180 |
|
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} |
181 |
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|
182 |
jsr166 |
1.43 |
/** |
183 |
jsr166 |
1.45 |
* Constructor sets given fairness, and is in unlocked state |
184 |
dl |
1.9 |
*/ |
185 |
jsr166 |
1.26 |
public void testConstructor() { |
186 |
jsr166 |
1.45 |
PublicReentrantLock lock; |
187 |
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|
188 |
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lock = new PublicReentrantLock(); |
189 |
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assertFalse(lock.isFair()); |
190 |
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assertNotLocked(lock); |
191 |
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|
192 |
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lock = new PublicReentrantLock(true); |
193 |
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assertTrue(lock.isFair()); |
194 |
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assertNotLocked(lock); |
195 |
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196 |
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lock = new PublicReentrantLock(false); |
197 |
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assertFalse(lock.isFair()); |
198 |
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assertNotLocked(lock); |
199 |
dl |
1.9 |
} |
200 |
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|
201 |
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/** |
202 |
dl |
1.6 |
* locking an unlocked lock succeeds |
203 |
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*/ |
204 |
jsr166 |
1.46 |
public void testLock() { testLock(false); } |
205 |
|
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public void testLock_fair() { testLock(true); } |
206 |
|
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public void testLock(boolean fair) { |
207 |
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PublicReentrantLock lock = new PublicReentrantLock(fair); |
208 |
jsr166 |
1.45 |
lock.lock(); |
209 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
210 |
jsr166 |
1.45 |
releaseLock(lock); |
211 |
dl |
1.6 |
} |
212 |
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|
213 |
dl |
1.8 |
/** |
214 |
dl |
1.5 |
* Unlocking an unlocked lock throws IllegalMonitorStateException |
215 |
dl |
1.1 |
*/ |
216 |
jsr166 |
1.46 |
public void testUnlock_IMSE() { testUnlock_IMSE(false); } |
217 |
|
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public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); } |
218 |
|
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public void testUnlock_IMSE(boolean fair) { |
219 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
220 |
jsr166 |
1.30 |
try { |
221 |
jsr166 |
1.45 |
lock.unlock(); |
222 |
jsr166 |
1.30 |
shouldThrow(); |
223 |
|
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} catch (IllegalMonitorStateException success) {} |
224 |
dl |
1.5 |
} |
225 |
dl |
1.1 |
|
226 |
dl |
1.8 |
/** |
227 |
dl |
1.15 |
* tryLock on an unlocked lock succeeds |
228 |
dl |
1.1 |
*/ |
229 |
jsr166 |
1.46 |
public void testTryLock() { testTryLock(false); } |
230 |
|
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public void testTryLock_fair() { testTryLock(true); } |
231 |
|
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public void testTryLock(boolean fair) { |
232 |
|
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PublicReentrantLock lock = new PublicReentrantLock(fair); |
233 |
|
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assertTrue(lock.tryLock()); |
234 |
|
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assertLockedByMoi(lock); |
235 |
jsr166 |
1.45 |
assertTrue(lock.tryLock()); |
236 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
237 |
|
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lock.unlock(); |
238 |
jsr166 |
1.45 |
releaseLock(lock); |
239 |
dl |
1.6 |
} |
240 |
|
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|
241 |
dl |
1.8 |
/** |
242 |
dl |
1.13 |
* hasQueuedThreads reports whether there are waiting threads |
243 |
|
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*/ |
244 |
jsr166 |
1.46 |
public void testHasQueuedThreads() { testHasQueuedThreads(false); } |
245 |
|
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public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); } |
246 |
|
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public void testHasQueuedThreads(boolean fair) { |
247 |
|
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final PublicReentrantLock lock = new PublicReentrantLock(fair); |
248 |
dl |
1.13 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
249 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
250 |
jsr166 |
1.29 |
assertFalse(lock.hasQueuedThreads()); |
251 |
|
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lock.lock(); |
252 |
jsr166 |
1.45 |
assertFalse(lock.hasQueuedThreads()); |
253 |
jsr166 |
1.29 |
t1.start(); |
254 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t1); |
255 |
jsr166 |
1.29 |
assertTrue(lock.hasQueuedThreads()); |
256 |
|
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t2.start(); |
257 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t2); |
258 |
jsr166 |
1.29 |
assertTrue(lock.hasQueuedThreads()); |
259 |
|
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t1.interrupt(); |
260 |
jsr166 |
1.45 |
awaitTermination(t1); |
261 |
jsr166 |
1.29 |
assertTrue(lock.hasQueuedThreads()); |
262 |
|
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lock.unlock(); |
263 |
jsr166 |
1.45 |
awaitTermination(t2); |
264 |
jsr166 |
1.29 |
assertFalse(lock.hasQueuedThreads()); |
265 |
jsr166 |
1.26 |
} |
266 |
dl |
1.13 |
|
267 |
|
|
/** |
268 |
dl |
1.7 |
* getQueueLength reports number of waiting threads |
269 |
dl |
1.1 |
*/ |
270 |
jsr166 |
1.46 |
public void testGetQueueLength() { testGetQueueLength(false); } |
271 |
|
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public void testGetQueueLength_fair() { testGetQueueLength(true); } |
272 |
|
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public void testGetQueueLength(boolean fair) { |
273 |
|
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final PublicReentrantLock lock = new PublicReentrantLock(fair); |
274 |
dl |
1.16 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
275 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
276 |
jsr166 |
1.29 |
assertEquals(0, lock.getQueueLength()); |
277 |
|
|
lock.lock(); |
278 |
|
|
t1.start(); |
279 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t1); |
280 |
jsr166 |
1.29 |
assertEquals(1, lock.getQueueLength()); |
281 |
|
|
t2.start(); |
282 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t2); |
283 |
jsr166 |
1.29 |
assertEquals(2, lock.getQueueLength()); |
284 |
|
|
t1.interrupt(); |
285 |
jsr166 |
1.45 |
awaitTermination(t1); |
286 |
jsr166 |
1.29 |
assertEquals(1, lock.getQueueLength()); |
287 |
|
|
lock.unlock(); |
288 |
jsr166 |
1.45 |
awaitTermination(t2); |
289 |
jsr166 |
1.29 |
assertEquals(0, lock.getQueueLength()); |
290 |
jsr166 |
1.26 |
} |
291 |
dl |
1.16 |
|
292 |
|
|
/** |
293 |
dl |
1.19 |
* hasQueuedThread(null) throws NPE |
294 |
|
|
*/ |
295 |
jsr166 |
1.46 |
public void testHasQueuedThreadNPE() { testHasQueuedThreadNPE(false); } |
296 |
|
|
public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); } |
297 |
|
|
public void testHasQueuedThreadNPE(boolean fair) { |
298 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
299 |
dl |
1.19 |
try { |
300 |
jsr166 |
1.45 |
lock.hasQueuedThread(null); |
301 |
dl |
1.19 |
shouldThrow(); |
302 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
303 |
dl |
1.19 |
} |
304 |
|
|
|
305 |
|
|
/** |
306 |
jsr166 |
1.49 |
* hasQueuedThread reports whether a thread is queued |
307 |
dl |
1.19 |
*/ |
308 |
jsr166 |
1.46 |
public void testHasQueuedThread() { testHasQueuedThread(false); } |
309 |
|
|
public void testHasQueuedThread_fair() { testHasQueuedThread(true); } |
310 |
|
|
public void testHasQueuedThread(boolean fair) { |
311 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
312 |
jsr166 |
1.45 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
313 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
314 |
|
|
assertFalse(lock.hasQueuedThread(t1)); |
315 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
316 |
|
|
lock.lock(); |
317 |
jsr166 |
1.29 |
t1.start(); |
318 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t1); |
319 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
320 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
321 |
jsr166 |
1.29 |
t2.start(); |
322 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t2); |
323 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
324 |
|
|
assertTrue(lock.hasQueuedThread(t2)); |
325 |
jsr166 |
1.29 |
t1.interrupt(); |
326 |
jsr166 |
1.42 |
awaitTermination(t1); |
327 |
jsr166 |
1.45 |
assertFalse(lock.hasQueuedThread(t1)); |
328 |
|
|
assertTrue(lock.hasQueuedThread(t2)); |
329 |
|
|
lock.unlock(); |
330 |
jsr166 |
1.42 |
awaitTermination(t2); |
331 |
jsr166 |
1.45 |
assertFalse(lock.hasQueuedThread(t1)); |
332 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
333 |
jsr166 |
1.26 |
} |
334 |
dl |
1.19 |
|
335 |
|
|
/** |
336 |
dl |
1.5 |
* getQueuedThreads includes waiting threads |
337 |
|
|
*/ |
338 |
jsr166 |
1.46 |
public void testGetQueuedThreads() { testGetQueuedThreads(false); } |
339 |
|
|
public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); } |
340 |
|
|
public void testGetQueuedThreads(boolean fair) { |
341 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
342 |
dl |
1.5 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
343 |
|
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
344 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
345 |
|
|
lock.lock(); |
346 |
|
|
assertTrue(lock.getQueuedThreads().isEmpty()); |
347 |
|
|
t1.start(); |
348 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t1); |
349 |
|
|
assertEquals(1, lock.getQueuedThreads().size()); |
350 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
351 |
|
|
t2.start(); |
352 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t2); |
353 |
|
|
assertEquals(2, lock.getQueuedThreads().size()); |
354 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
355 |
|
|
assertTrue(lock.getQueuedThreads().contains(t2)); |
356 |
|
|
t1.interrupt(); |
357 |
jsr166 |
1.45 |
awaitTermination(t1); |
358 |
jsr166 |
1.29 |
assertFalse(lock.getQueuedThreads().contains(t1)); |
359 |
|
|
assertTrue(lock.getQueuedThreads().contains(t2)); |
360 |
jsr166 |
1.45 |
assertEquals(1, lock.getQueuedThreads().size()); |
361 |
jsr166 |
1.29 |
lock.unlock(); |
362 |
jsr166 |
1.45 |
awaitTermination(t2); |
363 |
jsr166 |
1.29 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
364 |
jsr166 |
1.26 |
} |
365 |
dl |
1.5 |
|
366 |
dl |
1.8 |
/** |
367 |
jsr166 |
1.49 |
* timed tryLock is interruptible |
368 |
dl |
1.5 |
*/ |
369 |
jsr166 |
1.46 |
public void testTryLock_Interruptible() { testTryLock_Interruptible(false); } |
370 |
|
|
public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); } |
371 |
|
|
public void testTryLock_Interruptible(boolean fair) { |
372 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
373 |
jsr166 |
1.30 |
lock.lock(); |
374 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
375 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
376 |
jsr166 |
1.45 |
lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS); |
377 |
jsr166 |
1.29 |
}}); |
378 |
|
|
|
379 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t); |
380 |
jsr166 |
1.29 |
t.interrupt(); |
381 |
jsr166 |
1.42 |
awaitTermination(t); |
382 |
jsr166 |
1.45 |
releaseLock(lock); |
383 |
dl |
1.1 |
} |
384 |
|
|
|
385 |
dl |
1.5 |
/** |
386 |
jsr166 |
1.45 |
* tryLock on a locked lock fails |
387 |
dl |
1.5 |
*/ |
388 |
jsr166 |
1.46 |
public void testTryLockWhenLocked() { testTryLockWhenLocked(false); } |
389 |
|
|
public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); } |
390 |
|
|
public void testTryLockWhenLocked(boolean fair) { |
391 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
392 |
jsr166 |
1.30 |
lock.lock(); |
393 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
394 |
jsr166 |
1.29 |
public void realRun() { |
395 |
jsr166 |
1.37 |
assertFalse(lock.tryLock()); |
396 |
jsr166 |
1.29 |
}}); |
397 |
|
|
|
398 |
jsr166 |
1.42 |
awaitTermination(t); |
399 |
jsr166 |
1.45 |
releaseLock(lock); |
400 |
jsr166 |
1.26 |
} |
401 |
dl |
1.3 |
|
402 |
dl |
1.5 |
/** |
403 |
dl |
1.15 |
* Timed tryLock on a locked lock times out |
404 |
dl |
1.5 |
*/ |
405 |
jsr166 |
1.46 |
public void testTryLock_Timeout() { testTryLock_Timeout(false); } |
406 |
|
|
public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); } |
407 |
|
|
public void testTryLock_Timeout(boolean fair) { |
408 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
409 |
jsr166 |
1.64 |
final long timeoutMillis = timeoutMillis(); |
410 |
jsr166 |
1.30 |
lock.lock(); |
411 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
412 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
413 |
jsr166 |
1.45 |
long startTime = System.nanoTime(); |
414 |
|
|
assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS)); |
415 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
416 |
jsr166 |
1.29 |
}}); |
417 |
|
|
|
418 |
jsr166 |
1.42 |
awaitTermination(t); |
419 |
jsr166 |
1.45 |
releaseLock(lock); |
420 |
jsr166 |
1.26 |
} |
421 |
|
|
|
422 |
dl |
1.5 |
/** |
423 |
|
|
* getHoldCount returns number of recursive holds |
424 |
|
|
*/ |
425 |
jsr166 |
1.46 |
public void testGetHoldCount() { testGetHoldCount(false); } |
426 |
|
|
public void testGetHoldCount_fair() { testGetHoldCount(true); } |
427 |
|
|
public void testGetHoldCount(boolean fair) { |
428 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
429 |
jsr166 |
1.30 |
for (int i = 1; i <= SIZE; i++) { |
430 |
|
|
lock.lock(); |
431 |
|
|
assertEquals(i, lock.getHoldCount()); |
432 |
|
|
} |
433 |
|
|
for (int i = SIZE; i > 0; i--) { |
434 |
|
|
lock.unlock(); |
435 |
jsr166 |
1.59 |
assertEquals(i - 1, lock.getHoldCount()); |
436 |
jsr166 |
1.30 |
} |
437 |
dl |
1.1 |
} |
438 |
jsr166 |
1.26 |
|
439 |
dl |
1.5 |
/** |
440 |
|
|
* isLocked is true when locked and false when not |
441 |
|
|
*/ |
442 |
jsr166 |
1.46 |
public void testIsLocked() { testIsLocked(false); } |
443 |
|
|
public void testIsLocked_fair() { testIsLocked(true); } |
444 |
|
|
public void testIsLocked(boolean fair) { |
445 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
446 |
jsr166 |
1.46 |
try { |
447 |
|
|
assertFalse(lock.isLocked()); |
448 |
|
|
lock.lock(); |
449 |
|
|
assertTrue(lock.isLocked()); |
450 |
|
|
lock.lock(); |
451 |
|
|
assertTrue(lock.isLocked()); |
452 |
|
|
lock.unlock(); |
453 |
|
|
assertTrue(lock.isLocked()); |
454 |
|
|
lock.unlock(); |
455 |
|
|
assertFalse(lock.isLocked()); |
456 |
|
|
final CyclicBarrier barrier = new CyclicBarrier(2); |
457 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
458 |
|
|
public void realRun() throws Exception { |
459 |
|
|
lock.lock(); |
460 |
|
|
assertTrue(lock.isLocked()); |
461 |
|
|
barrier.await(); |
462 |
|
|
barrier.await(); |
463 |
|
|
lock.unlock(); |
464 |
|
|
}}); |
465 |
|
|
|
466 |
|
|
barrier.await(); |
467 |
|
|
assertTrue(lock.isLocked()); |
468 |
|
|
barrier.await(); |
469 |
|
|
awaitTermination(t); |
470 |
|
|
assertFalse(lock.isLocked()); |
471 |
jsr166 |
1.57 |
} catch (Exception fail) { threadUnexpectedException(fail); } |
472 |
jsr166 |
1.26 |
} |
473 |
dl |
1.6 |
|
474 |
dl |
1.5 |
/** |
475 |
|
|
* lockInterruptibly succeeds when unlocked, else is interruptible |
476 |
|
|
*/ |
477 |
jsr166 |
1.46 |
public void testLockInterruptibly() { testLockInterruptibly(false); } |
478 |
|
|
public void testLockInterruptibly_fair() { testLockInterruptibly(true); } |
479 |
|
|
public void testLockInterruptibly(boolean fair) { |
480 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
481 |
|
|
try { |
482 |
|
|
lock.lockInterruptibly(); |
483 |
jsr166 |
1.57 |
} catch (InterruptedException fail) { threadUnexpectedException(fail); } |
484 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
485 |
jsr166 |
1.41 |
Thread t = newStartedThread(new InterruptedLockRunnable(lock)); |
486 |
jsr166 |
1.45 |
waitForQueuedThread(lock, t); |
487 |
jsr166 |
1.29 |
t.interrupt(); |
488 |
|
|
assertTrue(lock.isLocked()); |
489 |
|
|
assertTrue(lock.isHeldByCurrentThread()); |
490 |
jsr166 |
1.42 |
awaitTermination(t); |
491 |
jsr166 |
1.45 |
releaseLock(lock); |
492 |
dl |
1.1 |
} |
493 |
dl |
1.2 |
|
494 |
dl |
1.6 |
/** |
495 |
|
|
* Calling await without holding lock throws IllegalMonitorStateException |
496 |
|
|
*/ |
497 |
jsr166 |
1.46 |
public void testAwait_IMSE() { testAwait_IMSE(false); } |
498 |
|
|
public void testAwait_IMSE_fair() { testAwait_IMSE(true); } |
499 |
|
|
public void testAwait_IMSE(boolean fair) { |
500 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
501 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
502 |
jsr166 |
1.48 |
for (AwaitMethod awaitMethod : AwaitMethod.values()) { |
503 |
|
|
long startTime = System.nanoTime(); |
504 |
jsr166 |
1.46 |
try { |
505 |
jsr166 |
1.48 |
await(c, awaitMethod); |
506 |
jsr166 |
1.46 |
shouldThrow(); |
507 |
jsr166 |
1.48 |
} catch (IllegalMonitorStateException success) { |
508 |
|
|
} catch (InterruptedException e) { threadUnexpectedException(e); } |
509 |
|
|
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
510 |
jsr166 |
1.46 |
} |
511 |
dl |
1.2 |
} |
512 |
|
|
|
513 |
dl |
1.6 |
/** |
514 |
|
|
* Calling signal without holding lock throws IllegalMonitorStateException |
515 |
|
|
*/ |
516 |
jsr166 |
1.46 |
public void testSignal_IMSE() { testSignal_IMSE(false); } |
517 |
|
|
public void testSignal_IMSE_fair() { testSignal_IMSE(true); } |
518 |
|
|
public void testSignal_IMSE(boolean fair) { |
519 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
520 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
521 |
|
|
try { |
522 |
|
|
c.signal(); |
523 |
dl |
1.6 |
shouldThrow(); |
524 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
525 |
dl |
1.2 |
} |
526 |
|
|
|
527 |
dl |
1.6 |
/** |
528 |
|
|
* awaitNanos without a signal times out |
529 |
|
|
*/ |
530 |
jsr166 |
1.46 |
public void testAwaitNanos_Timeout() { testAwaitNanos_Timeout(false); } |
531 |
|
|
public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); } |
532 |
|
|
public void testAwaitNanos_Timeout(boolean fair) { |
533 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
534 |
|
|
final Condition c = lock.newCondition(); |
535 |
|
|
final long timeoutMillis = timeoutMillis(); |
536 |
|
|
final long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis); |
537 |
|
|
lock.lock(); |
538 |
|
|
final long startTime = System.nanoTime(); |
539 |
jsr166 |
1.46 |
try { |
540 |
|
|
long nanosRemaining = c.awaitNanos(timeoutNanos); |
541 |
|
|
assertTrue(nanosRemaining <= 0); |
542 |
jsr166 |
1.57 |
} catch (InterruptedException fail) { threadUnexpectedException(fail); } |
543 |
jsr166 |
1.64 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
544 |
|
|
lock.unlock(); |
545 |
dl |
1.2 |
} |
546 |
|
|
|
547 |
dl |
1.6 |
/** |
548 |
jsr166 |
1.38 |
* timed await without a signal times out |
549 |
dl |
1.6 |
*/ |
550 |
jsr166 |
1.46 |
public void testAwait_Timeout() { testAwait_Timeout(false); } |
551 |
|
|
public void testAwait_Timeout_fair() { testAwait_Timeout(true); } |
552 |
|
|
public void testAwait_Timeout(boolean fair) { |
553 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
554 |
|
|
final Condition c = lock.newCondition(); |
555 |
|
|
final long timeoutMillis = timeoutMillis(); |
556 |
|
|
lock.lock(); |
557 |
|
|
final long startTime = System.nanoTime(); |
558 |
jsr166 |
1.46 |
try { |
559 |
|
|
assertFalse(c.await(timeoutMillis, MILLISECONDS)); |
560 |
jsr166 |
1.57 |
} catch (InterruptedException fail) { threadUnexpectedException(fail); } |
561 |
jsr166 |
1.64 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
562 |
|
|
lock.unlock(); |
563 |
dl |
1.2 |
} |
564 |
|
|
|
565 |
dl |
1.6 |
/** |
566 |
|
|
* awaitUntil without a signal times out |
567 |
|
|
*/ |
568 |
jsr166 |
1.46 |
public void testAwaitUntil_Timeout() { testAwaitUntil_Timeout(false); } |
569 |
|
|
public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); } |
570 |
|
|
public void testAwaitUntil_Timeout(boolean fair) { |
571 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
572 |
|
|
final Condition c = lock.newCondition(); |
573 |
|
|
lock.lock(); |
574 |
|
|
// We shouldn't assume that nanoTime and currentTimeMillis |
575 |
|
|
// use the same time source, so don't use nanoTime here. |
576 |
|
|
final java.util.Date delayedDate = delayedDate(timeoutMillis()); |
577 |
jsr166 |
1.46 |
try { |
578 |
jsr166 |
1.63 |
assertFalse(c.awaitUntil(delayedDate)); |
579 |
jsr166 |
1.57 |
} catch (InterruptedException fail) { threadUnexpectedException(fail); } |
580 |
jsr166 |
1.64 |
assertTrue(new java.util.Date().getTime() >= delayedDate.getTime()); |
581 |
|
|
lock.unlock(); |
582 |
dl |
1.2 |
} |
583 |
|
|
|
584 |
dl |
1.6 |
/** |
585 |
|
|
* await returns when signalled |
586 |
|
|
*/ |
587 |
jsr166 |
1.46 |
public void testAwait() { testAwait(false); } |
588 |
|
|
public void testAwait_fair() { testAwait(true); } |
589 |
|
|
public void testAwait(boolean fair) { |
590 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
591 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
592 |
jsr166 |
1.45 |
final CountDownLatch locked = new CountDownLatch(1); |
593 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
594 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
595 |
|
|
lock.lock(); |
596 |
jsr166 |
1.45 |
locked.countDown(); |
597 |
jsr166 |
1.29 |
c.await(); |
598 |
|
|
lock.unlock(); |
599 |
|
|
}}); |
600 |
dl |
1.5 |
|
601 |
jsr166 |
1.46 |
await(locked); |
602 |
jsr166 |
1.29 |
lock.lock(); |
603 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t); |
604 |
jsr166 |
1.29 |
c.signal(); |
605 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
606 |
|
|
assertTrue(t.isAlive()); |
607 |
jsr166 |
1.29 |
lock.unlock(); |
608 |
jsr166 |
1.42 |
awaitTermination(t); |
609 |
dl |
1.5 |
} |
610 |
|
|
|
611 |
dl |
1.6 |
/** |
612 |
dl |
1.14 |
* hasWaiters throws NPE if null |
613 |
|
|
*/ |
614 |
jsr166 |
1.46 |
public void testHasWaitersNPE() { testHasWaitersNPE(false); } |
615 |
|
|
public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); } |
616 |
|
|
public void testHasWaitersNPE(boolean fair) { |
617 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
618 |
dl |
1.14 |
try { |
619 |
|
|
lock.hasWaiters(null); |
620 |
|
|
shouldThrow(); |
621 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
622 |
dl |
1.14 |
} |
623 |
|
|
|
624 |
|
|
/** |
625 |
|
|
* getWaitQueueLength throws NPE if null |
626 |
|
|
*/ |
627 |
jsr166 |
1.46 |
public void testGetWaitQueueLengthNPE() { testGetWaitQueueLengthNPE(false); } |
628 |
|
|
public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); } |
629 |
|
|
public void testGetWaitQueueLengthNPE(boolean fair) { |
630 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
631 |
dl |
1.14 |
try { |
632 |
|
|
lock.getWaitQueueLength(null); |
633 |
|
|
shouldThrow(); |
634 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
635 |
dl |
1.14 |
} |
636 |
|
|
|
637 |
|
|
/** |
638 |
|
|
* getWaitingThreads throws NPE if null |
639 |
|
|
*/ |
640 |
jsr166 |
1.46 |
public void testGetWaitingThreadsNPE() { testGetWaitingThreadsNPE(false); } |
641 |
|
|
public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); } |
642 |
|
|
public void testGetWaitingThreadsNPE(boolean fair) { |
643 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
644 |
dl |
1.14 |
try { |
645 |
|
|
lock.getWaitingThreads(null); |
646 |
|
|
shouldThrow(); |
647 |
jsr166 |
1.29 |
} catch (NullPointerException success) {} |
648 |
dl |
1.14 |
} |
649 |
|
|
|
650 |
|
|
/** |
651 |
jsr166 |
1.45 |
* hasWaiters throws IllegalArgumentException if not owned |
652 |
dl |
1.13 |
*/ |
653 |
jsr166 |
1.46 |
public void testHasWaitersIAE() { testHasWaitersIAE(false); } |
654 |
|
|
public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); } |
655 |
|
|
public void testHasWaitersIAE(boolean fair) { |
656 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
657 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
658 |
jsr166 |
1.46 |
final ReentrantLock lock2 = new ReentrantLock(fair); |
659 |
dl |
1.13 |
try { |
660 |
|
|
lock2.hasWaiters(c); |
661 |
|
|
shouldThrow(); |
662 |
jsr166 |
1.29 |
} catch (IllegalArgumentException success) {} |
663 |
dl |
1.13 |
} |
664 |
|
|
|
665 |
|
|
/** |
666 |
jsr166 |
1.45 |
* hasWaiters throws IllegalMonitorStateException if not locked |
667 |
dl |
1.13 |
*/ |
668 |
jsr166 |
1.46 |
public void testHasWaitersIMSE() { testHasWaitersIMSE(false); } |
669 |
|
|
public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); } |
670 |
|
|
public void testHasWaitersIMSE(boolean fair) { |
671 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
672 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
673 |
dl |
1.13 |
try { |
674 |
|
|
lock.hasWaiters(c); |
675 |
|
|
shouldThrow(); |
676 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
677 |
dl |
1.13 |
} |
678 |
|
|
|
679 |
|
|
/** |
680 |
jsr166 |
1.45 |
* getWaitQueueLength throws IllegalArgumentException if not owned |
681 |
dl |
1.13 |
*/ |
682 |
jsr166 |
1.46 |
public void testGetWaitQueueLengthIAE() { testGetWaitQueueLengthIAE(false); } |
683 |
|
|
public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); } |
684 |
|
|
public void testGetWaitQueueLengthIAE(boolean fair) { |
685 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
686 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
687 |
jsr166 |
1.46 |
final ReentrantLock lock2 = new ReentrantLock(fair); |
688 |
dl |
1.13 |
try { |
689 |
|
|
lock2.getWaitQueueLength(c); |
690 |
|
|
shouldThrow(); |
691 |
jsr166 |
1.29 |
} catch (IllegalArgumentException success) {} |
692 |
dl |
1.13 |
} |
693 |
|
|
|
694 |
|
|
/** |
695 |
jsr166 |
1.45 |
* getWaitQueueLength throws IllegalMonitorStateException if not locked |
696 |
dl |
1.13 |
*/ |
697 |
jsr166 |
1.46 |
public void testGetWaitQueueLengthIMSE() { testGetWaitQueueLengthIMSE(false); } |
698 |
|
|
public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); } |
699 |
|
|
public void testGetWaitQueueLengthIMSE(boolean fair) { |
700 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
701 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
702 |
dl |
1.13 |
try { |
703 |
|
|
lock.getWaitQueueLength(c); |
704 |
|
|
shouldThrow(); |
705 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
706 |
dl |
1.13 |
} |
707 |
|
|
|
708 |
|
|
/** |
709 |
jsr166 |
1.45 |
* getWaitingThreads throws IllegalArgumentException if not owned |
710 |
dl |
1.13 |
*/ |
711 |
jsr166 |
1.46 |
public void testGetWaitingThreadsIAE() { testGetWaitingThreadsIAE(false); } |
712 |
|
|
public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); } |
713 |
|
|
public void testGetWaitingThreadsIAE(boolean fair) { |
714 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
715 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
716 |
jsr166 |
1.46 |
final PublicReentrantLock lock2 = new PublicReentrantLock(fair); |
717 |
dl |
1.13 |
try { |
718 |
|
|
lock2.getWaitingThreads(c); |
719 |
|
|
shouldThrow(); |
720 |
jsr166 |
1.29 |
} catch (IllegalArgumentException success) {} |
721 |
dl |
1.13 |
} |
722 |
|
|
|
723 |
|
|
/** |
724 |
jsr166 |
1.45 |
* getWaitingThreads throws IllegalMonitorStateException if not locked |
725 |
dl |
1.13 |
*/ |
726 |
jsr166 |
1.46 |
public void testGetWaitingThreadsIMSE() { testGetWaitingThreadsIMSE(false); } |
727 |
|
|
public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); } |
728 |
|
|
public void testGetWaitingThreadsIMSE(boolean fair) { |
729 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
730 |
jsr166 |
1.29 |
final Condition c = lock.newCondition(); |
731 |
dl |
1.13 |
try { |
732 |
|
|
lock.getWaitingThreads(c); |
733 |
|
|
shouldThrow(); |
734 |
jsr166 |
1.29 |
} catch (IllegalMonitorStateException success) {} |
735 |
dl |
1.13 |
} |
736 |
|
|
|
737 |
|
|
/** |
738 |
dl |
1.6 |
* hasWaiters returns true when a thread is waiting, else false |
739 |
|
|
*/ |
740 |
jsr166 |
1.46 |
public void testHasWaiters() { testHasWaiters(false); } |
741 |
|
|
public void testHasWaiters_fair() { testHasWaiters(true); } |
742 |
|
|
public void testHasWaiters(boolean fair) { |
743 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
744 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
745 |
jsr166 |
1.51 |
final CountDownLatch pleaseSignal = new CountDownLatch(1); |
746 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedRunnable() { |
747 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
748 |
|
|
lock.lock(); |
749 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
750 |
jsr166 |
1.37 |
assertFalse(lock.hasWaiters(c)); |
751 |
jsr166 |
1.51 |
pleaseSignal.countDown(); |
752 |
jsr166 |
1.29 |
c.await(); |
753 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
754 |
|
|
assertFalse(lock.hasWaiters(c)); |
755 |
jsr166 |
1.29 |
lock.unlock(); |
756 |
|
|
}}); |
757 |
dl |
1.2 |
|
758 |
jsr166 |
1.51 |
await(pleaseSignal); |
759 |
jsr166 |
1.29 |
lock.lock(); |
760 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t); |
761 |
jsr166 |
1.29 |
assertTrue(lock.hasWaiters(c)); |
762 |
|
|
c.signal(); |
763 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
764 |
jsr166 |
1.29 |
assertFalse(lock.hasWaiters(c)); |
765 |
|
|
lock.unlock(); |
766 |
jsr166 |
1.42 |
awaitTermination(t); |
767 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
768 |
dl |
1.5 |
} |
769 |
|
|
|
770 |
dl |
1.6 |
/** |
771 |
|
|
* getWaitQueueLength returns number of waiting threads |
772 |
|
|
*/ |
773 |
jsr166 |
1.46 |
public void testGetWaitQueueLength() { testGetWaitQueueLength(false); } |
774 |
|
|
public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); } |
775 |
|
|
public void testGetWaitQueueLength(boolean fair) { |
776 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
777 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
778 |
jsr166 |
1.45 |
final CountDownLatch locked1 = new CountDownLatch(1); |
779 |
|
|
final CountDownLatch locked2 = new CountDownLatch(1); |
780 |
|
|
Thread t1 = new Thread(new CheckedRunnable() { |
781 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
782 |
|
|
lock.lock(); |
783 |
jsr166 |
1.37 |
assertFalse(lock.hasWaiters(c)); |
784 |
|
|
assertEquals(0, lock.getWaitQueueLength(c)); |
785 |
jsr166 |
1.45 |
locked1.countDown(); |
786 |
jsr166 |
1.29 |
c.await(); |
787 |
|
|
lock.unlock(); |
788 |
|
|
}}); |
789 |
dl |
1.13 |
|
790 |
jsr166 |
1.45 |
Thread t2 = new Thread(new CheckedRunnable() { |
791 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
792 |
|
|
lock.lock(); |
793 |
jsr166 |
1.37 |
assertTrue(lock.hasWaiters(c)); |
794 |
|
|
assertEquals(1, lock.getWaitQueueLength(c)); |
795 |
jsr166 |
1.45 |
locked2.countDown(); |
796 |
jsr166 |
1.29 |
c.await(); |
797 |
|
|
lock.unlock(); |
798 |
|
|
}}); |
799 |
|
|
|
800 |
|
|
lock.lock(); |
801 |
jsr166 |
1.45 |
assertEquals(0, lock.getWaitQueueLength(c)); |
802 |
|
|
lock.unlock(); |
803 |
|
|
|
804 |
|
|
t1.start(); |
805 |
jsr166 |
1.46 |
await(locked1); |
806 |
jsr166 |
1.45 |
|
807 |
|
|
lock.lock(); |
808 |
|
|
assertHasWaiters(lock, c, t1); |
809 |
|
|
assertEquals(1, lock.getWaitQueueLength(c)); |
810 |
|
|
lock.unlock(); |
811 |
|
|
|
812 |
|
|
t2.start(); |
813 |
jsr166 |
1.46 |
await(locked2); |
814 |
jsr166 |
1.45 |
|
815 |
|
|
lock.lock(); |
816 |
|
|
assertHasWaiters(lock, c, t1, t2); |
817 |
jsr166 |
1.29 |
assertEquals(2, lock.getWaitQueueLength(c)); |
818 |
|
|
c.signalAll(); |
819 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
820 |
jsr166 |
1.29 |
lock.unlock(); |
821 |
jsr166 |
1.45 |
|
822 |
jsr166 |
1.42 |
awaitTermination(t1); |
823 |
|
|
awaitTermination(t2); |
824 |
jsr166 |
1.45 |
|
825 |
|
|
assertHasNoWaiters(lock, c); |
826 |
dl |
1.13 |
} |
827 |
|
|
|
828 |
|
|
/** |
829 |
|
|
* getWaitingThreads returns only and all waiting threads |
830 |
|
|
*/ |
831 |
jsr166 |
1.46 |
public void testGetWaitingThreads() { testGetWaitingThreads(false); } |
832 |
|
|
public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); } |
833 |
|
|
public void testGetWaitingThreads(boolean fair) { |
834 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
835 |
dl |
1.13 |
final Condition c = lock.newCondition(); |
836 |
jsr166 |
1.45 |
final CountDownLatch locked1 = new CountDownLatch(1); |
837 |
|
|
final CountDownLatch locked2 = new CountDownLatch(1); |
838 |
jsr166 |
1.30 |
Thread t1 = new Thread(new CheckedRunnable() { |
839 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
840 |
|
|
lock.lock(); |
841 |
jsr166 |
1.37 |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
842 |
jsr166 |
1.45 |
locked1.countDown(); |
843 |
jsr166 |
1.29 |
c.await(); |
844 |
|
|
lock.unlock(); |
845 |
|
|
}}); |
846 |
|
|
|
847 |
jsr166 |
1.30 |
Thread t2 = new Thread(new CheckedRunnable() { |
848 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
849 |
|
|
lock.lock(); |
850 |
jsr166 |
1.37 |
assertFalse(lock.getWaitingThreads(c).isEmpty()); |
851 |
jsr166 |
1.45 |
locked2.countDown(); |
852 |
jsr166 |
1.29 |
c.await(); |
853 |
|
|
lock.unlock(); |
854 |
|
|
}}); |
855 |
dl |
1.5 |
|
856 |
jsr166 |
1.29 |
lock.lock(); |
857 |
|
|
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
858 |
|
|
lock.unlock(); |
859 |
jsr166 |
1.45 |
|
860 |
jsr166 |
1.29 |
t1.start(); |
861 |
jsr166 |
1.46 |
await(locked1); |
862 |
jsr166 |
1.45 |
|
863 |
|
|
lock.lock(); |
864 |
|
|
assertHasWaiters(lock, c, t1); |
865 |
|
|
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
866 |
|
|
assertFalse(lock.getWaitingThreads(c).contains(t2)); |
867 |
|
|
assertEquals(1, lock.getWaitingThreads(c).size()); |
868 |
|
|
lock.unlock(); |
869 |
|
|
|
870 |
jsr166 |
1.29 |
t2.start(); |
871 |
jsr166 |
1.46 |
await(locked2); |
872 |
jsr166 |
1.45 |
|
873 |
jsr166 |
1.29 |
lock.lock(); |
874 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t1, t2); |
875 |
jsr166 |
1.29 |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
876 |
|
|
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
877 |
jsr166 |
1.45 |
assertEquals(2, lock.getWaitingThreads(c).size()); |
878 |
jsr166 |
1.29 |
c.signalAll(); |
879 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
880 |
jsr166 |
1.29 |
lock.unlock(); |
881 |
jsr166 |
1.45 |
|
882 |
jsr166 |
1.42 |
awaitTermination(t1); |
883 |
|
|
awaitTermination(t2); |
884 |
jsr166 |
1.26 |
|
885 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
886 |
dl |
1.22 |
} |
887 |
dl |
1.2 |
|
888 |
dl |
1.6 |
/** |
889 |
jsr166 |
1.51 |
* awaitUninterruptibly is uninterruptible |
890 |
dl |
1.6 |
*/ |
891 |
jsr166 |
1.46 |
public void testAwaitUninterruptibly() { testAwaitUninterruptibly(false); } |
892 |
|
|
public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); } |
893 |
|
|
public void testAwaitUninterruptibly(boolean fair) { |
894 |
|
|
final ReentrantLock lock = new ReentrantLock(fair); |
895 |
jsr166 |
1.65 |
final Condition condition = lock.newCondition(); |
896 |
jsr166 |
1.51 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(2); |
897 |
|
|
|
898 |
|
|
Thread t1 = newStartedThread(new CheckedRunnable() { |
899 |
|
|
public void realRun() { |
900 |
|
|
// Interrupt before awaitUninterruptibly |
901 |
|
|
lock.lock(); |
902 |
|
|
pleaseInterrupt.countDown(); |
903 |
|
|
Thread.currentThread().interrupt(); |
904 |
jsr166 |
1.65 |
condition.awaitUninterruptibly(); |
905 |
jsr166 |
1.51 |
assertTrue(Thread.interrupted()); |
906 |
|
|
lock.unlock(); |
907 |
|
|
}}); |
908 |
|
|
|
909 |
|
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
910 |
jsr166 |
1.45 |
public void realRun() { |
911 |
jsr166 |
1.51 |
// Interrupt during awaitUninterruptibly |
912 |
jsr166 |
1.45 |
lock.lock(); |
913 |
jsr166 |
1.51 |
pleaseInterrupt.countDown(); |
914 |
jsr166 |
1.65 |
condition.awaitUninterruptibly(); |
915 |
jsr166 |
1.45 |
assertTrue(Thread.interrupted()); |
916 |
|
|
lock.unlock(); |
917 |
|
|
}}); |
918 |
dl |
1.22 |
|
919 |
jsr166 |
1.51 |
await(pleaseInterrupt); |
920 |
jsr166 |
1.65 |
t2.interrupt(); |
921 |
jsr166 |
1.45 |
lock.lock(); |
922 |
|
|
lock.unlock(); |
923 |
jsr166 |
1.65 |
assertThreadBlocks(t1, Thread.State.WAITING); |
924 |
|
|
assertThreadBlocks(t2, Thread.State.WAITING); |
925 |
jsr166 |
1.51 |
|
926 |
jsr166 |
1.29 |
lock.lock(); |
927 |
jsr166 |
1.65 |
condition.signalAll(); |
928 |
jsr166 |
1.45 |
lock.unlock(); |
929 |
jsr166 |
1.51 |
|
930 |
|
|
awaitTermination(t1); |
931 |
|
|
awaitTermination(t2); |
932 |
dl |
1.2 |
} |
933 |
|
|
|
934 |
dl |
1.6 |
/** |
935 |
jsr166 |
1.46 |
* await/awaitNanos/awaitUntil is interruptible |
936 |
dl |
1.6 |
*/ |
937 |
jsr166 |
1.46 |
public void testInterruptible_await() { testInterruptible(false, AwaitMethod.await); } |
938 |
|
|
public void testInterruptible_await_fair() { testInterruptible(true, AwaitMethod.await); } |
939 |
jsr166 |
1.48 |
public void testInterruptible_awaitTimed() { testInterruptible(false, AwaitMethod.awaitTimed); } |
940 |
|
|
public void testInterruptible_awaitTimed_fair() { testInterruptible(true, AwaitMethod.awaitTimed); } |
941 |
jsr166 |
1.46 |
public void testInterruptible_awaitNanos() { testInterruptible(false, AwaitMethod.awaitNanos); } |
942 |
|
|
public void testInterruptible_awaitNanos_fair() { testInterruptible(true, AwaitMethod.awaitNanos); } |
943 |
|
|
public void testInterruptible_awaitUntil() { testInterruptible(false, AwaitMethod.awaitUntil); } |
944 |
|
|
public void testInterruptible_awaitUntil_fair() { testInterruptible(true, AwaitMethod.awaitUntil); } |
945 |
|
|
public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) { |
946 |
|
|
final PublicReentrantLock lock = |
947 |
|
|
new PublicReentrantLock(fair); |
948 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
949 |
jsr166 |
1.51 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
950 |
jsr166 |
1.41 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
951 |
jsr166 |
1.30 |
public void realRun() throws InterruptedException { |
952 |
jsr166 |
1.29 |
lock.lock(); |
953 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
954 |
jsr166 |
1.43 |
assertHasNoWaiters(lock, c); |
955 |
jsr166 |
1.51 |
pleaseInterrupt.countDown(); |
956 |
jsr166 |
1.43 |
try { |
957 |
jsr166 |
1.46 |
await(c, awaitMethod); |
958 |
jsr166 |
1.43 |
} finally { |
959 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
960 |
jsr166 |
1.43 |
assertHasNoWaiters(lock, c); |
961 |
|
|
lock.unlock(); |
962 |
|
|
assertFalse(Thread.interrupted()); |
963 |
|
|
} |
964 |
jsr166 |
1.29 |
}}); |
965 |
|
|
|
966 |
jsr166 |
1.51 |
await(pleaseInterrupt); |
967 |
jsr166 |
1.43 |
assertHasWaiters(lock, c, t); |
968 |
jsr166 |
1.29 |
t.interrupt(); |
969 |
jsr166 |
1.42 |
awaitTermination(t); |
970 |
jsr166 |
1.46 |
assertNotLocked(lock); |
971 |
dl |
1.2 |
} |
972 |
|
|
|
973 |
dl |
1.6 |
/** |
974 |
jsr166 |
1.46 |
* signalAll wakes up all threads |
975 |
dl |
1.6 |
*/ |
976 |
jsr166 |
1.46 |
public void testSignalAll_await() { testSignalAll(false, AwaitMethod.await); } |
977 |
|
|
public void testSignalAll_await_fair() { testSignalAll(true, AwaitMethod.await); } |
978 |
jsr166 |
1.48 |
public void testSignalAll_awaitTimed() { testSignalAll(false, AwaitMethod.awaitTimed); } |
979 |
|
|
public void testSignalAll_awaitTimed_fair() { testSignalAll(true, AwaitMethod.awaitTimed); } |
980 |
jsr166 |
1.46 |
public void testSignalAll_awaitNanos() { testSignalAll(false, AwaitMethod.awaitNanos); } |
981 |
|
|
public void testSignalAll_awaitNanos_fair() { testSignalAll(true, AwaitMethod.awaitNanos); } |
982 |
|
|
public void testSignalAll_awaitUntil() { testSignalAll(false, AwaitMethod.awaitUntil); } |
983 |
|
|
public void testSignalAll_awaitUntil_fair() { testSignalAll(true, AwaitMethod.awaitUntil); } |
984 |
|
|
public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) { |
985 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
986 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
987 |
jsr166 |
1.51 |
final CountDownLatch pleaseSignal = new CountDownLatch(2); |
988 |
jsr166 |
1.46 |
class Awaiter extends CheckedRunnable { |
989 |
jsr166 |
1.30 |
public void realRun() throws InterruptedException { |
990 |
jsr166 |
1.29 |
lock.lock(); |
991 |
jsr166 |
1.51 |
pleaseSignal.countDown(); |
992 |
jsr166 |
1.46 |
await(c, awaitMethod); |
993 |
|
|
lock.unlock(); |
994 |
|
|
} |
995 |
|
|
} |
996 |
jsr166 |
1.29 |
|
997 |
jsr166 |
1.46 |
Thread t1 = newStartedThread(new Awaiter()); |
998 |
|
|
Thread t2 = newStartedThread(new Awaiter()); |
999 |
dl |
1.2 |
|
1000 |
jsr166 |
1.51 |
await(pleaseSignal); |
1001 |
jsr166 |
1.46 |
lock.lock(); |
1002 |
|
|
assertHasWaiters(lock, c, t1, t2); |
1003 |
|
|
c.signalAll(); |
1004 |
|
|
assertHasNoWaiters(lock, c); |
1005 |
|
|
lock.unlock(); |
1006 |
|
|
awaitTermination(t1); |
1007 |
|
|
awaitTermination(t2); |
1008 |
dl |
1.2 |
} |
1009 |
|
|
|
1010 |
dl |
1.6 |
/** |
1011 |
jsr166 |
1.49 |
* signal wakes up waiting threads in FIFO order |
1012 |
dl |
1.6 |
*/ |
1013 |
jsr166 |
1.46 |
public void testSignalWakesFifo() { testSignalWakesFifo(false); } |
1014 |
|
|
public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); } |
1015 |
|
|
public void testSignalWakesFifo(boolean fair) { |
1016 |
|
|
final PublicReentrantLock lock = |
1017 |
|
|
new PublicReentrantLock(fair); |
1018 |
dl |
1.2 |
final Condition c = lock.newCondition(); |
1019 |
jsr166 |
1.46 |
final CountDownLatch locked1 = new CountDownLatch(1); |
1020 |
|
|
final CountDownLatch locked2 = new CountDownLatch(1); |
1021 |
jsr166 |
1.41 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
1022 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
1023 |
|
|
lock.lock(); |
1024 |
jsr166 |
1.46 |
locked1.countDown(); |
1025 |
jsr166 |
1.29 |
c.await(); |
1026 |
|
|
lock.unlock(); |
1027 |
|
|
}}); |
1028 |
|
|
|
1029 |
jsr166 |
1.46 |
await(locked1); |
1030 |
|
|
|
1031 |
jsr166 |
1.41 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
1032 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
1033 |
|
|
lock.lock(); |
1034 |
jsr166 |
1.46 |
locked2.countDown(); |
1035 |
jsr166 |
1.29 |
c.await(); |
1036 |
|
|
lock.unlock(); |
1037 |
|
|
}}); |
1038 |
dl |
1.2 |
|
1039 |
jsr166 |
1.46 |
await(locked2); |
1040 |
|
|
|
1041 |
jsr166 |
1.29 |
lock.lock(); |
1042 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t1, t2); |
1043 |
jsr166 |
1.46 |
assertFalse(lock.hasQueuedThreads()); |
1044 |
|
|
c.signal(); |
1045 |
|
|
assertHasWaiters(lock, c, t2); |
1046 |
|
|
assertTrue(lock.hasQueuedThread(t1)); |
1047 |
|
|
assertFalse(lock.hasQueuedThread(t2)); |
1048 |
|
|
c.signal(); |
1049 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
1050 |
jsr166 |
1.46 |
assertTrue(lock.hasQueuedThread(t1)); |
1051 |
|
|
assertTrue(lock.hasQueuedThread(t2)); |
1052 |
jsr166 |
1.29 |
lock.unlock(); |
1053 |
jsr166 |
1.42 |
awaitTermination(t1); |
1054 |
|
|
awaitTermination(t2); |
1055 |
dl |
1.3 |
} |
1056 |
|
|
|
1057 |
dl |
1.6 |
/** |
1058 |
dl |
1.23 |
* await after multiple reentrant locking preserves lock count |
1059 |
|
|
*/ |
1060 |
jsr166 |
1.46 |
public void testAwaitLockCount() { testAwaitLockCount(false); } |
1061 |
|
|
public void testAwaitLockCount_fair() { testAwaitLockCount(true); } |
1062 |
|
|
public void testAwaitLockCount(boolean fair) { |
1063 |
|
|
final PublicReentrantLock lock = new PublicReentrantLock(fair); |
1064 |
dl |
1.23 |
final Condition c = lock.newCondition(); |
1065 |
jsr166 |
1.51 |
final CountDownLatch pleaseSignal = new CountDownLatch(2); |
1066 |
jsr166 |
1.41 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
1067 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
1068 |
|
|
lock.lock(); |
1069 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
1070 |
jsr166 |
1.37 |
assertEquals(1, lock.getHoldCount()); |
1071 |
jsr166 |
1.51 |
pleaseSignal.countDown(); |
1072 |
jsr166 |
1.29 |
c.await(); |
1073 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
1074 |
jsr166 |
1.37 |
assertEquals(1, lock.getHoldCount()); |
1075 |
jsr166 |
1.29 |
lock.unlock(); |
1076 |
|
|
}}); |
1077 |
dl |
1.23 |
|
1078 |
jsr166 |
1.41 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
1079 |
jsr166 |
1.29 |
public void realRun() throws InterruptedException { |
1080 |
|
|
lock.lock(); |
1081 |
|
|
lock.lock(); |
1082 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
1083 |
jsr166 |
1.37 |
assertEquals(2, lock.getHoldCount()); |
1084 |
jsr166 |
1.51 |
pleaseSignal.countDown(); |
1085 |
jsr166 |
1.29 |
c.await(); |
1086 |
jsr166 |
1.46 |
assertLockedByMoi(lock); |
1087 |
jsr166 |
1.37 |
assertEquals(2, lock.getHoldCount()); |
1088 |
jsr166 |
1.29 |
lock.unlock(); |
1089 |
|
|
lock.unlock(); |
1090 |
|
|
}}); |
1091 |
|
|
|
1092 |
jsr166 |
1.51 |
await(pleaseSignal); |
1093 |
jsr166 |
1.29 |
lock.lock(); |
1094 |
jsr166 |
1.45 |
assertHasWaiters(lock, c, t1, t2); |
1095 |
|
|
assertEquals(1, lock.getHoldCount()); |
1096 |
jsr166 |
1.29 |
c.signalAll(); |
1097 |
jsr166 |
1.45 |
assertHasNoWaiters(lock, c); |
1098 |
jsr166 |
1.29 |
lock.unlock(); |
1099 |
jsr166 |
1.42 |
awaitTermination(t1); |
1100 |
|
|
awaitTermination(t2); |
1101 |
dl |
1.23 |
} |
1102 |
|
|
|
1103 |
|
|
/** |
1104 |
dl |
1.6 |
* A serialized lock deserializes as unlocked |
1105 |
|
|
*/ |
1106 |
jsr166 |
1.46 |
public void testSerialization() { testSerialization(false); } |
1107 |
|
|
public void testSerialization_fair() { testSerialization(true); } |
1108 |
|
|
public void testSerialization(boolean fair) { |
1109 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
1110 |
jsr166 |
1.46 |
lock.lock(); |
1111 |
|
|
|
1112 |
|
|
ReentrantLock clone = serialClone(lock); |
1113 |
|
|
assertEquals(lock.isFair(), clone.isFair()); |
1114 |
|
|
assertTrue(lock.isLocked()); |
1115 |
|
|
assertFalse(clone.isLocked()); |
1116 |
|
|
assertEquals(1, lock.getHoldCount()); |
1117 |
|
|
assertEquals(0, clone.getHoldCount()); |
1118 |
|
|
clone.lock(); |
1119 |
|
|
clone.lock(); |
1120 |
|
|
assertTrue(clone.isLocked()); |
1121 |
|
|
assertEquals(2, clone.getHoldCount()); |
1122 |
|
|
assertEquals(1, lock.getHoldCount()); |
1123 |
|
|
clone.unlock(); |
1124 |
|
|
clone.unlock(); |
1125 |
|
|
assertTrue(lock.isLocked()); |
1126 |
|
|
assertFalse(clone.isLocked()); |
1127 |
dl |
1.2 |
} |
1128 |
dl |
1.1 |
|
1129 |
dl |
1.18 |
/** |
1130 |
|
|
* toString indicates current lock state |
1131 |
|
|
*/ |
1132 |
jsr166 |
1.46 |
public void testToString() { testToString(false); } |
1133 |
|
|
public void testToString_fair() { testToString(true); } |
1134 |
|
|
public void testToString(boolean fair) { |
1135 |
jsr166 |
1.64 |
final ReentrantLock lock = new ReentrantLock(fair); |
1136 |
jsr166 |
1.49 |
assertTrue(lock.toString().contains("Unlocked")); |
1137 |
dl |
1.18 |
lock.lock(); |
1138 |
jsr166 |
1.64 |
assertTrue(lock.toString().contains("Locked by")); |
1139 |
jsr166 |
1.49 |
lock.unlock(); |
1140 |
|
|
assertTrue(lock.toString().contains("Unlocked")); |
1141 |
dl |
1.18 |
} |
1142 |
jsr166 |
1.67 |
|
1143 |
|
|
/** |
1144 |
|
|
* Tests scenario for JDK-8187408 |
1145 |
|
|
* AbstractQueuedSynchronizer wait queue corrupted when thread awaits without holding the lock |
1146 |
|
|
*/ |
1147 |
|
|
public void testBug8187408() throws InterruptedException { |
1148 |
|
|
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
1149 |
|
|
final AwaitMethod awaitMethod = randomAwaitMethod(); |
1150 |
|
|
final int nThreads = rnd.nextInt(2, 10); |
1151 |
|
|
final ReentrantLock lock = new ReentrantLock(); |
1152 |
|
|
final Condition cond = lock.newCondition(); |
1153 |
|
|
final CountDownLatch done = new CountDownLatch(nThreads); |
1154 |
|
|
final ArrayList<Thread> threads = new ArrayList<>(); |
1155 |
|
|
|
1156 |
|
|
Runnable rogue = () -> { |
1157 |
|
|
while (done.getCount() > 0) { |
1158 |
|
|
try { |
1159 |
|
|
// call await without holding lock?! |
1160 |
|
|
await(cond, awaitMethod); |
1161 |
|
|
throw new AssertionError("should throw"); |
1162 |
|
|
} |
1163 |
|
|
catch (IllegalMonitorStateException expected) {} |
1164 |
|
|
catch (Throwable fail) { threadUnexpectedException(fail); }}}; |
1165 |
|
|
Thread rogueThread = new Thread(rogue, "rogue"); |
1166 |
|
|
threads.add(rogueThread); |
1167 |
|
|
rogueThread.start(); |
1168 |
|
|
|
1169 |
|
|
Runnable waiter = () -> { |
1170 |
|
|
lock.lock(); |
1171 |
|
|
try { |
1172 |
|
|
done.countDown(); |
1173 |
|
|
cond.await(); |
1174 |
|
|
} catch (Throwable fail) { |
1175 |
|
|
threadUnexpectedException(fail); |
1176 |
|
|
} finally { |
1177 |
|
|
lock.unlock(); |
1178 |
|
|
}}; |
1179 |
|
|
for (int i = 0; i < nThreads; i++) { |
1180 |
|
|
Thread thread = new Thread(waiter, "waiter"); |
1181 |
|
|
threads.add(thread); |
1182 |
|
|
thread.start(); |
1183 |
|
|
} |
1184 |
|
|
|
1185 |
|
|
assertTrue(done.await(LONG_DELAY_MS, MILLISECONDS)); |
1186 |
|
|
lock.lock(); |
1187 |
|
|
try { |
1188 |
|
|
assertEquals(nThreads, lock.getWaitQueueLength(cond)); |
1189 |
|
|
} finally { |
1190 |
|
|
cond.signalAll(); |
1191 |
|
|
lock.unlock(); |
1192 |
|
|
} |
1193 |
|
|
for (Thread thread : threads) { |
1194 |
|
|
thread.join(LONG_DELAY_MS); |
1195 |
|
|
assertFalse(thread.isAlive()); |
1196 |
|
|
} |
1197 |
|
|
} |
1198 |
dl |
1.1 |
} |