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How to Map Files into Memory in C (mmap, memory mapped file io)  //  How to Map Files into Memory in C (mmap) // Want to read an entire file into an array in memory all at once, in C? Memory-mapped file I/O is one of those super useful tools that so many programmers don't know about. Let's fix that.

My recent, related videos:

Basic File IO in C
https://youtu.be/BQJBe4IbsvQ

Get the size of files.
https://youtu.be/FT2A2HQbTkU

Easier working with file paths, with realpath
https://youtu.be/ewqX1IuYzC8

Using mmap to request more memory
https://youtu.be/XV5sRaSVtXQ



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Welcome! I post videos that help you learn to program and become a more confident software developer. I cover beginner-to-advanced systems topics ranging from network programming, threads, processes, operating systems, embedded systems and others. My goal is to help you get under-the-hood and better understand how computers work and how you can use them to become stronger students and more capable professional developers.


About me: I'm a computer scientist, electrical engineer, researcher, and teacher. I specialize in embedded systems, mobile computing, sensor networks, and the Internet of Things. I teach systems and networking courses at Clemson University, where I also lead the PERSIST research lab. 

More about me and what I do:
https://www.jacobsorber.com
https://people.cs.clemson.edu/~jsorber/
http://persist.cs.clemson.edu/

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Source code is also available to Patreon supporters. --- [https://jsorber-youtube-source.herokuapp.com/]




Want me to review your code?
Email the code to js.reviews.code@gmail.com. Code should be simple and in one of the following languages: C, C++, python, java, ruby. You must be the author of the code and have rights to post it. Please include the following statement in your email: "I attest that this is my code, and I hereby give Jacob Sorber the right to use, review, post, comment on, and modify this code on his videos."

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