Parent and child process communicate in unix, Operating System

Assignment Help:

Parent and Child process communicate in unix

A child and parent can interact through any of the normal inter-process communication schemes (pipes, message queues, sockets, shared memory), but also have some special paths to interact that take advantage of their relationship as a child and parent. 

One of the most general is that the parent may act the exit status of the child.  Since the child adds file descriptors from its parent, the parent may start both ends of a fork, pipe, then the parent close one part and the child close the other part of the pipe. This is what occurs when you call the popen() routine to execute another program from within yours, i.e. you may write to the file descriptor given from popen() and the child process looks it as its stdin, or you may read from the file descriptor and look what the program wrote to its stdout. 

 

106_parent child process communication.png


Related Discussions:- Parent and child process communicate in unix

How resolution of externally defined symbols is performed, Resolution of ex...

Resolution of externally defined symbols is carried out by    Resolution of externally defined symbols is carried out by Linker

What are the various layers of a file system, What are the various layers o...

What are the various layers of a file system? The file system is composed of many dissimilar levels. Each level in the design uses the feature of the lower levels to make new f

Cpu scheduling alogarithm program in javascript, a program that can do cpu ...

a program that can do cpu scheduling algorithm priority using javascript or php to display gaant chart and calculate waiting and average waiting time

How are file sharing and protection implemented?, How are file sharing and ...

How are file sharing and protection implemented? To implement file protection and sharing, the system ought to maintain more file and directory attributes than are needed on a

Define instance, Define Instance. An instance is an administrative unit...

Define Instance. An instance is an administrative unit in which components of R/3 systems giving one or more services are grouped together.  The services offered by a case are

Computer, what is an operating system?

what is an operating system?

Write a short note about the different states of a process, Write a short n...

Write a short note about the different STATES of a process. As a process implement it changes state. The state of a process is described in part by the current activity of that

List disadvantages of using a single directory, List disadvantages of using...

List disadvantages of using a single directory. Users have no privacy. Users must be careful in choosing file names, to avoid names used by others. Users may destroy each othe

Explain process states in the unix system, Process States A total of n...

Process States A total of nine states are acknowledged by the UNIX system. They are like as follow: User running                                                   Executing

What is preallocation, What is preallocation? Why do it? Allocating spa...

What is preallocation? Why do it? Allocating space for a file before making the file to allow for expansion. This reserves space for a certain file so that other files can't gr

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd