双语阅读笔记 - 操作系统 - Process Control Block

It is important to realize that only one process can be running on any processor at any instant.

要记住每一时刻一个处理器只能有一个进程运行。

Process Control Block 进程控制块
Each process is represented in the operating system by a process control block (PCB)—also called a task control block.

操作系统使用进程控制块表示进程，进程控制块也叫任务控制块。

PCB内容：

1 Process state.

2 Program counter.

3 CPU registers.

4 CPU-scheduling information.

5 Memory-management information.

6 Accounting information.

7 I/O status information.

In brief, the PCB simply serves as the repository for any information that may vary from process to process.

简而言之，PCB存储各进程所有相关的信息，而这些信息在各个进程中不尽相同。

Reference :

Operating System Concepts