How to use Cc<T> with multithreading?

[mio-19]

I want to implement a multi-threaded interpreter with Cc<T>.
Does Mutex<Cc<T>> work?

[jrmuizel]

Yes, Mutex<Cc> should work.

[jrmuizel]

Actually, I might be wrong. There's a thread local buffer and it's pretty believable that things could break if you share Cc's across threads.

[clinuxrulz]

We should create a Acc or something similar that can be sent or shared between threads. It seems like at the start of collect_cycle we can run a trace() over the nodes and lock all the ones that are going to take part in collect_cycles, then use trace() again to unlock all those nodes at the end of collect_cycles(). So that multiple collect_cycles from different threads can execute simultaneously if they are talking to independent nodes.

[jrmuizel]

I put up a prototype of what this could look like at https://github.com/jrmuizel/cc-mt