41 import java.util.HashSet;

    41 import java.util.HashSet;

    42 import java.util.concurrent.ThreadLocalRandom;

    42 import java.util.concurrent.ThreadLocalRandom;

    43 import java.util.concurrent.locks.AbstractQueuedLongSynchronizer;

    43 import java.util.concurrent.locks.AbstractQueuedLongSynchronizer;

    44 import java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject;

    44 import java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject;

    45 

    45 

    47 import junit.framework.Test;

    46 import junit.framework.Test;

    48 import junit.framework.TestSuite;

    47 import junit.framework.TestSuite;

    49 

    48 

    50 @SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom

    49 @SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom

    51 public class AbstractQueuedLongSynchronizerTest extends JSR166TestCase {

    50 public class AbstractQueuedLongSynchronizerTest extends JSR166TestCase {

   166     void waitForQueuedThread(AbstractQueuedLongSynchronizer sync,

   165     void waitForQueuedThread(AbstractQueuedLongSynchronizer sync,

   167                              Thread t) {

   166                              Thread t) {

   168         long startTime = System.nanoTime();

   167         long startTime = System.nanoTime();

   169         while (!sync.isQueued(t)) {

   168         while (!sync.isQueued(t)) {

   170             if (millisElapsedSince(startTime) > LONG_DELAY_MS)

   169             if (millisElapsedSince(startTime) > LONG_DELAY_MS)

   172             Thread.yield();

   171             Thread.yield();

   173         }

   172         }

   174         assertTrue(t.isAlive());

   173         assertTrue(t.isAlive());

   175     }

   174     }

   176 

   175