本文整理汇总了Java中java.util.concurrent.LinkedBlockingDeque.getFirst方法的典型用法代码示例。如果您正苦于以下问题：Java LinkedBlockingDeque.getFirst方法的具体用法？Java LinkedBlockingDeque.getFirst怎么用？Java LinkedBlockingDeque.getFirst使用的例子？那么恭喜您, 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.LinkedBlockingDeque的用法示例。
在下文中一共展示了LinkedBlockingDeque.getFirst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: findSendablePacket
import java.util.concurrent.LinkedBlockingDeque; //导入方法依赖的package包/类
private Packet findSendablePacket(LinkedBlockingDeque<Packet> outgoingQueue,
boolean tunneledAuthInProgres) {
if (outgoingQueue.isEmpty()) {
return null;
}
// If we've already starting sending the first packet, we better finish
if (outgoingQueue.getFirst().bb != null || !tunneledAuthInProgres) {
return outgoingQueue.getFirst();
}
// Since client's authentication with server is in progress,
// send only the null-header packet queued by primeConnection().
// This packet must be sent so that the SASL authentication process
// can proceed, but all other packets should wait until
// SASL authentication completes.
Iterator<Packet> iter = outgoingQueue.iterator();
while (iter.hasNext()) {
Packet p = iter.next();
if (p.requestHeader == null) {
// We've found the priming-packet. Move it to the beginning of the queue.
iter.remove();
outgoingQueue.addFirst(p);
return p;
} else {
// Non-priming packet: defer it until later, leaving it in the queue
// until authentication completes.
LOG.debug("deferring non-priming packet {} until SASL authentation completes.", p);
}
}
return null;
}
示例2: testFirstElement
import java.util.concurrent.LinkedBlockingDeque; //导入方法依赖的package包/类
/**
* getFirst() returns first element, or throws NSEE if empty
*/
public void testFirstElement() {
LinkedBlockingDeque q = populatedDeque(SIZE);
for (int i = 0; i < SIZE; ++i) {
assertEquals(i, q.getFirst());
assertEquals(i, q.pollFirst());
}
try {
q.getFirst();
shouldThrow();
} catch (NoSuchElementException success) {}
assertNull(q.peekFirst());
}