E poll(long timeout, TimeUnit unit) throws InterruptedException; 1 2 常见的四种阻塞队列 1、ArrayBlockingQueue:由数组支持的有界队列 2、LinkedBlockingQueue:由链表支持的可选有界队列 3、PriorityBlockingQueue:由优先级支持无界优先级队列 4、Del
1. poll方法:获取队列的头部信息,并将其从队列中删除,如果规定时间内没有元素,则返回null。 E poll(long timeout, TimeUnit unit) throws InterruptedException; 1. 2. 常见的四种阻塞队列 1、ArrayBlockingQueue:由数组支持的有界队列 2、LinkedBlockingQueue:由链表支持的可选有界队列 3、PriorityBlockingQueue:由...
/** Lock held by take, poll, etc */privatefinalReentrantLock takeLock = newReentrantLock();/** Wait queue for waiting takes */privatefinalCondition not...
public class PollQueueThread extends Thread { private Queue queue; public PollQueueThread(Queue queue){ this.queue = queue; } @Override public void run() { while(true){ try { Object el = queue.poll(); if(null == el){ System.out.println(Thread.currentThread().getName()+" is blocked,...
add: xfer(e, true, ASYNC, 0)//take: xfer(null, false, SYNC, 0)//poll: xfer(null, false, NOW, 0)//timed poll: xfer(null, false, TIMED, unit.toNanos(timeout))//transfer: xfer(e, true, SYNC, 0)//tryTransfer: xfer(e, true, NOW, 0)//timed tryTransfer: xfer(e, true, ...
4. 拓展: offer(timeout) 与 poll(timeout)实现原理 实现与put/take基本一样,只不过底层调用了LockSupport.parkNanos/LockSupport.unparkNanos wait publicfinalvoidawait()throwsInterruptedException{if(Thread.interrupted())thrownewInterruptedException();Nodenode=addConditionWaiter();intsavedState=fullyRelease(node)...