本文整理汇总了Java中java.util.concurrent.Semaphore.hasQueuedThreads方法的典型用法代码示例。如果您正苦于以下问题：Java Semaphore.hasQueuedThreads方法的具体用法？Java Semaphore.hasQueuedThreads怎么用？Java Semaphore.hasQueuedThreads使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.util.concurrent.Semaphore的用法示例。
在下文中一共展示了Semaphore.hasQueuedThreads方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: waitForQueuedThreads
import java.util.concurrent.Semaphore; //导入方法依赖的package包/类
/**
* Spin-waits until s.hasQueuedThreads() becomes true.
*/
void waitForQueuedThreads(Semaphore s) {
long startTime = System.nanoTime();
while (!s.hasQueuedThreads()) {
if (millisElapsedSince(startTime) > LONG_DELAY_MS)
throw new AssertionFailedError("timed out");
Thread.yield();
}
}
示例2: testReleaseAcquireDifferentThreads
import java.util.concurrent.Semaphore; //导入方法依赖的package包/类
public void testReleaseAcquireDifferentThreads(boolean fair,
final AcquireMethod acquirer) {
final Semaphore s = new Semaphore(0, fair);
final int rounds = 4;
long startTime = System.nanoTime();
Thread t = newStartedThread(new CheckedRunnable() {
public void realRun() throws InterruptedException {
for (int i = 0; i < rounds; i++) {
assertFalse(s.hasQueuedThreads());
if (i % 2 == 0)
acquirer.acquire(s);
else
acquirer.acquire(s, 3);
}}});
for (int i = 0; i < rounds; i++) {
while (! (s.availablePermits() == 0 && s.hasQueuedThreads()))
Thread.yield();
assertTrue(t.isAlive());
if (i % 2 == 0)
s.release();
else
s.release(3);
}
awaitTermination(t);
assertEquals(0, s.availablePermits());
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
}