https://github.com/eldruin/ipc-fdstream

Inter-Process Communication with C++ STL-Like streams through file descriptors
https://github.com/eldruin/ipc-fdstream

c-plus-plus interprocess-communication streams

Last synced: about 1 year ago
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Inter-Process Communication with C++ STL-Like streams through file descriptors

• Host: GitHub
• URL: https://github.com/eldruin/ipc-fdstream
• Owner: eldruin
• Created: 2012-01-27T18:25:41.000Z (over 14 years ago)
• Default Branch: master
• Last Pushed: 2018-08-30T18:01:07.000Z (over 7 years ago)
• Last Synced: 2024-10-16T05:29:04.195Z (over 1 year ago)
• Topics: c-plus-plus, interprocess-communication, streams
• Language: C++
• Homepage: https://blog.eldruin.com/inter-process-communication-pipe-fork-cpp-stl-like-streams/
• Size: 6.84 KB
• Stars: 9
• Watchers: 4
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README

Awesome Lists containing this project

README

          
This is a basic example of inter-process communication

using fork() and pipe() in C++

Includes an example of creating a C++ stream from a file descriptor

and how to read/write from/to it using << and >> operators

Needs GCC's libstdc++ and a POSIX environment

Usage:

	$ make

	$ ./parent

Output:

	Parent: I'll send the child a message.

	Parent: Child just said through stdout:

		"Program: I've received: 'Hello Child!'"

	Parent: Child just said through stderr:

		"Program: This is the error stream!"

The scenario is: A parent process wants to handle another program’s

input and output streams, a process-level wrapper.

So the example is: A parent process forks into another child

process. The parent sends the child a message, the child receives it

and outputs it to the parent to show the communication works just

fine.

The forked process calls the program we want to control. Which in this

case is the easiest C++ program ever: Just reads a line from the

standard input and outputs a message containing the line just read

through the standard output. In addition, another message is sent

through the standard error stream.

Further explanation:

https://blog.eldruin.com/inter-process-communication-pipe-fork-cpp-stl-like-streams/

Resources:

     YoLinux Tutorial: Fork, Exec and Process control

     Beginning Linux programming, Matthew & Stones, Wrox Press

     The GNU C Library manual

     The GNU C++ Library manual

     fileno(3) on C++ Streams: A Hacker's Lament, Richard B. Kreckel

Author: Diego Barrios Romero

Public domain Copyleft 2011