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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 static java.util.concurrent.TimeUnit.MILLISECONDS; |
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> |
|
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.locks.LockSupport; |
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< |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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> |
|
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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 LockSupportTest 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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> |
main(suite(), args); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(LockSupportTest.class); |
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} |
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|
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+ |
static { |
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+ |
// Reduce the risk of rare disastrous classloading in first call to |
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+ |
// LockSupport.park: https://bugs.openjdk.java.net/browse/JDK-8074773 |
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+ |
Class<?> ensureLoaded = LockSupport.class; |
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+ |
} |
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+ |
|
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/** |
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* Returns the blocker object used by tests in this file. |
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* Any old object will do; we'll return a convenient one. |
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public void testParkTimesOut(final ParkMethod parkMethod) { |
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Thread t = newStartedThread(new CheckedRunnable() { |
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public void realRun() { |
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< |
for (;;) { |
| 259 |
> |
for (int tries = MAX_SPURIOUS_WAKEUPS; tries-->0; ) { |
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long startTime = System.nanoTime(); |
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parkMethod.park(timeoutMillis()); |
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// park may return spuriously |
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if (millisElapsedSince(startTime) >= timeoutMillis()) |
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return; |
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} |
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+ |
fail("too many consecutive spurious wakeups?"); |
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}}); |
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|
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awaitTermination(t); |
