Summary

First of all, congratulations! You have now implemented a super simple but working example of fibers. You’ve set up your own stack and learned about ISAs, ABIs, calling conventions, and inline assembly in Rust.

It was quite the ride we had to take, but if you came this far and read through everything, you should give yourself a big pat on the back. This is not for the faint of heart, but you pulled through.

This example (and chapter) might take a little time to fully digest, but there is no rush for that. You can always go back to this example and read the code again to fully understand it. I really do recommend that you play around with the code yourself and get to know it. Change the scheduling algorithm around, add more context to the threads you create, and use your imagination.

You will probably experience that debugging problems in low-level code like this can be pretty hard, but that’s part of the learning process and you can always revert back...