Mutex chapter

[japaric]

Come up with some examples of using Mutex and add them under https://rustbyexample.com/std.html

[brson]

No movement. If somebody adds Mutexes then so be it. Closing.

[brson]

Actually, I'm going to see if volunteers can be stirred up.

[brson]

Just come up with some examples of using Mutex and add them under the existing "Std misc" chapter. Perhaps once there's enough concurrency topics they can be broken out into a "Concurrency" chapter.

[phungleson]

@bors

Concurrency is a big topic so it is a bit hard to think of where to start.

Perhaps if you have any suggestions where (books, sites, repos...) might have some ideas or patterns that are more related to rust's implementation of Mutex and Arc?

[brson]

@phungleson The book chapter is a good resource. I don't have any other docs related to Rust Mutex and Arcs offhand. Maybe it does make sense to cover them together since they are so often used together.

Topics I might expect examples to cover:

• Use Arcs to share immutable data across threads
• Use Arcs to share Mutexed mutable data across threads
• Use lock to get write access to interior data. Note that when the MutexGuard goes out of scope the lock is released
• Negative example: you can't access the mutable data when the lock is released
• When a thread panics while holding the lock is poisoned and subsequent locks will fail
• How to get around the poisoning and take the lock anyway.

[numberMumbler]

I'll start on this if it's still available (@phungleson?)

[phungleson]

Yep it's available

[brson]

Thanks @numberMumbler !

[steveklabnik]

It doesn't seem like @numberMumbler is working on this; if anyone else would like to, I'd be happy to help mentor!

[hardvain]

@steveklabnik I will write a chapter on Mutex, Rc, Arc together. I wanted to learn how rust handles this for quite sometime. Will start with this if this is still available.

[steveklabnik]

Absolutely!

[marioidival]

Hi, I'm closing this issue just to clean up the items that already exist. If you think this issue makes sense to stay open, please create a new issue with updated information and mention this one.

thanks!