Process life cycle

Jan 22, 2015Download as PPTX, PDF11 likes20,467 views

Gunjan Kumar presented on the process life cycle. A process represents the basic unit of work in a system and has four main components: an object program to execute, required data, necessary resources, and status. A process can change between five main states - new, running, ready, waiting, and terminated - as it executes. The states represent where the process is in its execution, such as waiting for an event, ready to run but not currently running, or having finished running.

PRESENTATON
ON
PROCESS LIFE CYCLE
PRESENTED BY:-
GUNJAN KUMAR

PROCESS
 A process is defined as an entity which represents the basic unit
of work to be implemented in the system.
 Components of process are following:-
 1.Object Program :- Code to be executed.
 2.Data:- Data to be used for executing the program.
 3.Resources:- While executing the program, it may require some
resources.
 4.Status:- Verifies the status of the process execution.A process
can run to completion only when all requested resources have
been allocated to the process. Two or more processes could be
executing the same program, each using their own data and
resources.

PROCESS STATES
 As a process executes, it changes state. The state of a
process is defined as the current activity of the process.
 Process can have one of the following five states at a
time.
States:-
 New
 Running
 Ready
 Waiting
 Terminated

CONT….
 As a process executes, it changes state
 New:- The process is being created
 Running:- Instructions are being executed
 Waiting: -The process is waiting for some event to occur
 Ready:- The process is waiting to be assigned to a
Processor
 Terminated: -The process has finished execution
 These are the important conceptual states
 Actual name and number of states are OS-dependent.

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Process life cycle

1. PRESENTATON ON PROCESS LIFE CYCLE PRESENTED BY:- GUNJAN KUMAR

2. PROCESS  A process is defined as an entity which represents the basic unit of work to be implemented in the system.  Components of process are following:-  1.Object Program :- Code to be executed.  2.Data:- Data to be used for executing the program.  3.Resources:- While executing the program, it may require some resources.  4.Status:- Verifies the status of the process execution.A process can run to completion only when all requested resources have been allocated to the process. Two or more processes could be executing the same program, each using their own data and resources.

3. PROCESS STATES  As a process executes, it changes state. The state of a process is defined as the current activity of the process.  Process can have one of the following five states at a time. States:-  New  Running  Ready  Waiting  Terminated

4. THE PROCESS LIFE CYCLE

5. CONT….  As a process executes, it changes state  New:- The process is being created  Running:- Instructions are being executed  Waiting: -The process is waiting for some event to occur  Ready:- The process is waiting to be assigned to a Processor  Terminated: -The process has finished execution  These are the important conceptual states  Actual name and number of states are OS-dependent.

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Process life cycle

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