What is a semaphore? How do they work? (Example in C) @JacobSorber
What is a semaphore? How do they work? (Example in C)  @JacobSorber
Uploaded August 2020 | Updated September 2026, 2 weeks ago
Patreon ➤ patreon.com/jacobsorber
Courses ➤ jacobsorber.thinkific.com
Website ➤ jacobsorber.com
---


What is a semaphore? How do they work? (Example in C) // Semaphores cause a lot of confusion for students, largely because they are super flexible and a little weird. In this video, I try to provide some insight into how they work, and an example of where you could use semaphores to coordinate different processes.

Shared Memory Videos:
youtu.be/WgVSq-sgHOc
youtube.com/watch?v=rPV6b8BUwxM

Threads and Processes:
youtube.com/playlist?list=PL9IEJIKnBJjFZxuqyJ9JqVYmuFZHr7CFM
youtube.com/playlist?list=PL9IEJIKnBJjFNNfpY6fHjVzAwtgRYjhPw





***

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:
jacobsorber.com
https://people.cs.clemson.edu/~jsorber/
http://persist.cs.clemson.edu/

To Support the Channel:
+ like, subscribe, spread the word
+ contribute via Patreon --- [patreon.com/jacobsorber]
+ rep the channel with nerdy merch --- [teespring.com/stores/jacob-sorbers-store]

Source code is also available to Patreon supporters. --- [jsorber-youtube-source.herokuapp.com/]
What is a semaphore? How do they work? (Example in C)Produce better code faster through testing.Are Vectors Slower than Arrays?Why Printf is Magically Breaking Your Program.How to Write Function-Like Preprocessor Macros (C example)Youve probably never accessed a file like this before. (Async IO example)How to Contribute to Open Source Projects on Github (pull requests)How to Lose Your Code.Another way to check pointers at runtime in CUnderstanding Zombie Processes!Scanf Basics: the good, the bad, and why so many pointers?How to Check Your Pointers at Runtime
Jacob Sorber |

What is a semaphore? How do they work? (Example in C)

SHARE TO X SHARE TO REDDIT SHARE TO FACEBOOK WALLPAPER