Operating System: Case Study 6
Diagram 1.1: The Process State In the Process State diagram, jobs move through the system. There are five stages Hold, Ready, Waiting, Running, and Finished. When a process is first created, it occupies the hold state. In this state, the process awaits admission to the "ready" state. This admission will be approved or delayed by process scheduler. Typically in most desktop computer system, this admission will be approved automatically; however for real time operating systems this admission may be delayed. In the Reading process has been loaded into main memory and is awaiting execution on a CPU (Central Processing Unit). There may be many "ready" processes at any one point of the system execution. For example, in a one processor system, only one process can be executing at any one time, and all other "concurrently executing" process will be waiting for execution. While in the Running process is a process which is currently executing on a CPU. From thi...