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IT & SoftwareOperating Systems & ServersLinux

Linux Inter Process Communication (IPC) from Scratch in C

Linux Course - Includes Socket Programming, Linux System Programming, C programming - From Beginner to Expert
Rating: 4.4 out of 54.4 (696 ratings)
4,620 students
Created by Abhishek CSEPracticals, Shiwani Nigam, Ekta Ekta
Last updated 7/2022
English
English [Auto]

What you'll learn

  • You will be able to Design Application which require IPC
  • Choose the best IPC mechanism depending on the application requirement
  • Understand the Linux IPC programming interface
  • Understand Linux OS better and feel confident
  • Prepare for IPC based interview Questions
  • Design a Linux process which could harness benefits of various IPC Mechanism at the same time

Requirements

  • Basic C is essential
  • Basic knowledge Operating System shall be good
  • Zeal and Enthusiasm to learn

Description

About This Course is about learning How Linux Processes Talk to each Other. This is a sub-domain of Linux System Programming. We shall explore various popular mechanism used in the industry through which Linux processes to exchange data with each other. We will go through the concepts in detail behind each IPC mechanism, discuss the implementation, and design and analyze the situation where the given IPC is preferred over others.

We also discuss how applications should be designed to use IPC facilities provided by underlying Linux OS.

You will have Assignments wherever possible, and throughout the course, there shall be one project in which you shall be incrementally applying the new IPC technique you have learned. Towards the end of the course, you would have practiced and applied all IPC techniques learned in this course.

Each IPC mechanism, we will have a detailed code walk in which I show you how actually a given IPC mechanism is implemented on sending and receiving side.  When you would join the industry, from day 1 you will witness IPC concepts being applied all over the software in order to facilitate communication between different parts of the software.


Who should do this course ?

This course is meant for UG Computer science students, job seekers, and professional developers. This is a MUST do course for those who want to join MNCs as a developer in System Programming. In System Programming, almost all the time you have to use IPC to carry out data exchange between processes, therefore students graduating in computer science and looking to seek an opportunity in MNCs as a developer should have IPC concepts at his/her fingertips.


Pre-requisite

It shall be advantageous if you know a little about C and OS. We designed this course assuming the student is a complete beginner in Linux IPC and we raise the level of course gradually as we move from Basic to advance concepts wherever necessary.

Also, please just do not sit and watch my codes. Write your own codes, even if it is the same as mine!


Related Courses

RPC (Remote Procedure Calls) is another way of carrying out Inter-Process Communication between two processes running on separate machines in the network. You may also want to check my other course on Linux RPCs where you will learn how to implement RPCs from scratch.


Programming Language used In this course :

We have strong reasons to choose C as a language for this course:

IPC is a facility provided by the OS to developers to carry out data exchange between processes. Learning IPC using C helps you understand what is going on behind the scenes. C language really exposes the low-level details about how the system actually works. In System programming, C is the only language to be used and there is not even a remote substitute of this language when it comes to System programming.


No Third-Party libraries

Whatever logic you implement, you need to implement it from scratch. This course does not suggest taking the help of any third party library to get the jobs done. Use of external libraries completely defeats the purpose of the course. However, it is recommended to use third-party libraries for commonly used data structures such as linked lists/Trees/Queues, etc which saves a lot of time implementing these data structures.


Note1 : Though we use Linux to teach the IPC techniques, conceptually, IPC of Linux is not very different from other OS platforms such as windows, iOS, etc. So, if you are a programmer for other platforms, this course still holds great value for you.

Note2 : This Course talks about various techniques regarding exchanging data between processes, the other related topics such as process synchronization and locking is out of the scope of this course and will be covered separately.

Warning: This course has auto system-generated subtitles which may not be perfect. Please disable subtitles as per your convenience.


Curriculum

  • Introduction

    • Table of Contents

    • Computer Architecture - Overview

    • Various IPC Techniques

    • Communication Types


  • IPC Technique 1 - Unix Domain Sockets

    • Socket API Introduction

    • Socket Message Types

    • Socket Design Paradigm

    • Accept System Call

    • Introducing Unix Domain Socket

    • Unix Domain Socket Server Implementation

    • Unix Domain Socket Client Implementation

    • Multiplexing

    • Select System Call

    • Multiplexing Server State machine

    • Multiplexed Server Implementation

    • Data Synchronization - IPC Project part 1


  • IPC Technique 2 - Message Queue

    • Introduction

    • MsgQ as a Kernel Resource

    • Open & Create a MsgQ

    • Closing a MsgQ

    • Enque Data in MsgQ

    • Dequeue Data from MsgQ

    • Unlinking a MsgQ

    • Using a Msg Q - Design perspective

    • Bi-Directional Communication

    • Code Walk - Implementation

    • Demonstration


  • IPC Technique 3 - Shared Memory

    • Overall Design Goals

    • Concept of Virtual Memory

    • Program Control Block

    • Shared Memory Basics

    • Kernel Memory

    • mmap() - Memory Mapping

    • Design Constraint

    • Shared Memory related APIs

    • Data Synchronization - IPC Project part 2


  • IPC Technique 4 - Signals

    • Introduction

    • Linux Well knows Signals

    • Signals Generation and Trapping

    • Sending Signals using Kill()

    • Data Synchronization - IPC Project part 3



  • IPC Technique 5 - Network sockets

    • Socket Programming Design

    • Select System call

    • Accept System call

    • Concept of Multiplexing

    • Server State machine

    • Project on Socket Programming - IPC Project 4


  • Multiplexing on Different IPCs

    • Use select() to multiplex on different IPC interfaces

Who this course is for:

  • Under graduate Computer Science Students
  • Post Graduate Students
  • Job Seekers in System programming Domain - Networking/Driver programming/Distributed Systems/IOT etc

Instructors

Abhishek CSEPracticals
I build Networks !
Abhishek CSEPracticals
  • 4.5 Instructor Rating
  • 3,483 Reviews
  • 25,985 Students
  • 20 Courses

I have been engaged with coding and software for a decade now. I am a Networking developer at MNC. My rich working experience is backed by graduation from IIT Bombay as an MTech specialist. I am restless for more in-depth knowledge, and always working out the ways to integrate what I know in practical ways. I am always happy to train and encourage people on Udemy – the next-gen education platform.


I will help you to strengthen the networking concepts and fundamentals in a very practical way. I also hones in System Software Development, Linux System Programming and Network Software Development. I love to create courses on unique non-standard topics, and projects. Check my catalogue, you will find couple of project based courses which you can add to your resume.


You’ll complete assignments and work on a project where you’ll use all the theory. I make sure you build a proper understanding and that you’ll get all the questions and doubts answered. Let me take the privilege to guide you and bring useful additions to your resume !

Shiwani Nigam
Digital Marketing Executive
Shiwani Nigam
  • 4.4 Instructor Rating
  • 3,483 Reviews
  • 27,254 Students
  • 20 Courses

Hi, Myself Shivani Nigam, PhD in Marketing. I expertise in researching the consumer behavior in the context of purchasing the products online. I take the responsibility of marketing the online content (Udemy courses) on this platform.

I also ensure the courses are delivered with perfect Audio/Video Quality by technical Instructors, and ensures that students queries and doubts are addressed by technical instructors with priority.

Ekta Ekta
Facilities Manager
Ekta Ekta
  • 4.5 Instructor Rating
  • 3,483 Reviews
  • 25,985 Students
  • 20 Courses

Hi, I am Ekta, a facility Manager for Csepracticals. I am responsible for the maintenance and upkeep of an organization’s infrastructure, ensuring that they meet legal requirements and health and safety standards.

I ensure that the facility is operating as it should on a daily basis by completing daily inspections and conducting proactive and reactive maintenance.

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