[TBD]Understanding Interprocess communication

Introduction

Laymen explanation

Technical explanation

Interprocess communication is the mechanism provided by the operating system that allows processes to communicate with each other. This communication could involve a process letting another process know that some event has occurred or the transferring of data from one process to another.

Ways of communication

Types of IPC

Pipe (unnamed)

• • Both processes must be in same machine

Named Pipe

• Named pipes have a presence in the file system.

  • More flexible since it doesn't require that both end should be alive at same time

  • Named pipe content resides in memory rather than being written to disk. It is passed only when both ends of the pipe have been opened. And you can write to a pipe multiple times before it is opened at the other end and read.

  • Both processes must be in same machine

Message queue

• • Posix standard

  • Both processes must be in same machine.

Example: https://gist.github.com/gustavorv86/9e98621b44222114524399a3b4302ddb

Socket

Sockets provide point-to-point, two-way communication between two processes. There are two kind of sockets

• • Unix domain socket

  • Internet socket

Refer here for differences between them.

ZeroMQ

• • Processes can run in same machine or different machines

Reference

https://www.youtube.com/watch?v=dJuYKfR8vec

https://www.tutorialspoint.com/inter_process_communication/inter_process_communication_pipes.htm

https://images.app.goo.gl/oF2nHtZsZ5ZyYmjA8

https://images.app.goo.gl/Ha36XmxHaqvijQVQA

https://zeromq.org

https://images.app.goo.gl/yt8ggryARKZUHXrK8

https://images.app.goo.gl/rrmYHDFWnRhfuyiD9

https://images.app.goo.gl/eDR7H5LUxbUrmhhX9

https://www.tutorialspoint.com/what-is-interprocess-communication