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* Pat Fisher, Mike Judd. |
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*/ |
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|
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– |
import junit.framework.*; |
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– |
import java.util.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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+ |
import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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|
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import java.util.Arrays; |
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import java.util.Collection; |
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+ |
import java.util.HashSet; |
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import java.util.concurrent.locks.AbstractQueuedLongSynchronizer; |
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import java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject; |
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|
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+ |
import junit.framework.AssertionFailedError; |
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+ |
import junit.framework.Test; |
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+ |
import junit.framework.TestSuite; |
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+ |
|
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public class AbstractQueuedLongSynchronizerTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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new HashSet<Thread>(Arrays.asList(threads))); |
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} |
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|
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< |
enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }; |
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> |
enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil } |
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|
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/** |
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* Awaits condition using the specified AwaitMethod. |
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case awaitUntil: |
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assertTrue(c.awaitUntil(delayedDate(timeoutMillis))); |
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break; |
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+ |
default: |
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+ |
throw new AssertionError(); |
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} |
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} |
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|
| 1196 |
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*/ |
| 1197 |
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public void testTryAcquireSharedNanos_Timeout() { |
| 1198 |
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final BooleanLatch l = new BooleanLatch(); |
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+ |
final BooleanLatch observedQueued = new BooleanLatch(); |
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Thread t = newStartedThread(new CheckedRunnable() { |
| 1201 |
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public void realRun() throws InterruptedException { |
| 1202 |
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assertFalse(l.isSignalled()); |
| 1203 |
< |
long startTime = System.nanoTime(); |
| 1204 |
< |
long nanos = MILLISECONDS.toNanos(timeoutMillis()); |
| 1205 |
< |
assertFalse(l.tryAcquireSharedNanos(0, nanos)); |
| 1206 |
< |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
| 1203 |
> |
for (long millis = timeoutMillis(); |
| 1204 |
> |
!observedQueued.isSignalled(); |
| 1205 |
> |
millis *= 2) { |
| 1206 |
> |
long nanos = MILLISECONDS.toNanos(millis); |
| 1207 |
> |
long startTime = System.nanoTime(); |
| 1208 |
> |
assertFalse(l.tryAcquireSharedNanos(0, nanos)); |
| 1209 |
> |
assertTrue(millisElapsedSince(startTime) >= millis); |
| 1210 |
> |
} |
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assertFalse(l.isSignalled()); |
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}}); |
| 1213 |
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|
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waitForQueuedThread(l, t); |
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+ |
observedQueued.releaseShared(0); |
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assertFalse(l.isSignalled()); |
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awaitTermination(t); |
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assertFalse(l.isSignalled()); |
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} |
| 1220 |
|
|
| 1221 |
+ |
/** |
| 1222 |
+ |
* awaitNanos/timed await with 0 wait times out immediately |
| 1223 |
+ |
*/ |
| 1224 |
+ |
public void testAwait_Zero() throws InterruptedException { |
| 1225 |
+ |
final Mutex sync = new Mutex(); |
| 1226 |
+ |
final ConditionObject c = sync.newCondition(); |
| 1227 |
+ |
sync.acquire(); |
| 1228 |
+ |
assertTrue(c.awaitNanos(0L) <= 0); |
| 1229 |
+ |
assertFalse(c.await(0L, NANOSECONDS)); |
| 1230 |
+ |
sync.release(); |
| 1231 |
+ |
} |
| 1232 |
+ |
|
| 1233 |
+ |
/** |
| 1234 |
+ |
* awaitNanos/timed await with maximum negative wait times does not underflow |
| 1235 |
+ |
*/ |
| 1236 |
+ |
public void testAwait_NegativeInfinity() throws InterruptedException { |
| 1237 |
+ |
final Mutex sync = new Mutex(); |
| 1238 |
+ |
final ConditionObject c = sync.newCondition(); |
| 1239 |
+ |
sync.acquire(); |
| 1240 |
+ |
assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0); |
| 1241 |
+ |
assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS)); |
| 1242 |
+ |
sync.release(); |
| 1243 |
+ |
} |
| 1244 |
+ |
|
| 1245 |
|
} |
