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Process 1

4

Process

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Process 2

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Process 3

job ) Time-shared systems

task job process

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Process 4

(Process State)

new: running:

waiting:

ready: terminated:

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Process 5

Diagram Process State

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Process 6

rocess ontro oc(PCB) Program counter-

CPU registers-

CPU scheduling information-

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Process 7

rocess ontro oc(PCB)

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Process 8

w tc rocess toProcess

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Process 9

Process Scheduling Queues

Job queue

Ready queue

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Process 10

Ready Queue VariousI/O Device Queues

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Process 11

Process Scheduling

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Process 12

Schedulers

Long-term scheduler (or job scheduler)

Short-term scheduler (or CPU scheduler)

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Process 13

Schedulers () Short-term scheduler

Long-term scheduler

The long-term scheduler

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Process 14

Context Switch

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Process 15

Process Creation

a tree of processes

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Process 16

Process Creation ()

UNIX fork system call

exec system call Unix fork

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Process 17

UNIX System

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Process 18

Process Termination

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Process 19

Cooperating Processes

Independent process -

Cooperating process -