Good read, especially if you have no experience how task scheduling works in an operating system and the implication of shared data being updated while attempted to be read during task scheduling. I must say I'm very glad to be a part of the computer world of the 21st century, these ideas were all covered in my Operating Systems class in college where we even went as far as implementing a priority scheduler for MyOS (a very basic simulated operating system) and it was one of the most complex pieces of code I ever had to write. I couldn't imagine what it must have been like in the dark ages of computing when you had to implement features like this in assembly.