多机UNIX核心中的指令流控制结构—thread

Ｔｈｒｅａｄｓ－指令流结构成为多处理机ＵＮＩＸ操作系统中的一个基本结构。随着ＵＮＩＸ在多机环境下的不断开发，细颗粒开发，或者说指令级并发对提高系统的总处理能力显得越来越重要，并已从传统ＵＮＩＸ中的进程概念，发展为多处理机ＵＮＩＸ中的指令流／进程的概念。本文介绍了ｔｈｒｅａｄ的基本概念，ｔｈｒｅａｄ的构造，ｔｈｒｅａｄ的各种操作和多机ＵＮＩＸ中的一些实现算法。

THREAD--A KEY CONTROL STRUCTURE IN UNIX KERNEL EOR MULTIPROCESSORS

Threads have become more common in multiproee ssors UNIX oprating system. With UNIX de-veloping in multiprocessor environment, fine graded, or instruction level parallelism is neccssary to improve throughput. From original process comccpt in UNIX, multiprocessor UNIX developed into threads/ process concept. The article introduces the concept, construction and operation of thread, and some implement methods of multiprocessor UNIX operating system.