Operating system notes-operating system architecture-process Management 2015-6-5

　　

First, the operating system structure:

1, operating system structure: process- can obtain CPU resources, memory- in order to allow more programs to run, external devices, security mechanisms, networks, etc. constitute the operating system structure.

2. System Boot: Root

II. Process Management

1. The process can obtain CPU resources, through the process of State switching, to achieve the effect of running multiple programs simultaneously. Process scheduling algorithm, seamless switching.

2. Memory resources from 0 to Max are now 4G, memory has several partitions, from bottom to top are text (code area), data (area), stack stack area, heap area

3. Status of the process, waiting for waitting, preparing reading, blocking, running running

4. PCB to control the status between management processes.

Operating system notes-operating system architecture-process Management 2015-6-5