头指针

针对连接级别并行方式的特点，本文使用单生产者-单消费者无锁队列算法消除了任务队列的头指针和尾指针的耦合关系，降低了队列相关操作的开销，同时减少了线程阻塞带来的开销。

In connection level parallelization , we use the lock-free algorithm to cancel the coupling of the head pointer and the tail pointer . This optimization lowers the cost of the queue operation , and reduces the cost of thread blocking .

本文对高级在轨系统多路复用功能几个关键问题进行了研究&多路复用功能数据单元（M-PDU）长度的确定，M-PDU中首导头指针字段的设置，多路复用方式及调度策略的选择。

This paper analyses several key problems of multiplexing in AOS which are how to determine the length of M - PDU , how to set the First Header Pointer of M - PDU , and how to mutiplex .

在缓存中，运用哈希技术实现快速定位，利用哈希表项中存储的链头指针来链接一个数据链表，通过探测性的自适应置换算法进行缓存块的置换，并及时进行数据同步。

The mechanism applies many technologies , such as using hash technology to achieve rapid positioning , applying hash table entries stored the front pointer to link a data list , replacing a cache block with the detection of adaptive replacement algorithm , and timely data synchronization .

然而，用户仍必须触摸尾部来确定哪一头是指针的尾部。

However the user must still feel the ends to be sure which is the pointer end .

Parapalegics通常使用戴在头上的指针指示设备，他们移动头部以在屏幕上移动指针，并通过嘴里的管子吹气来点击鼠标。

Parapalegics generally use a cursor-pointing device that attaches to the head ; they move their head to move the cursor on screen and blow through a tube in their mouth to click the mouse .