I've noticed there are so many thread modules.

First of all, we have build-in ithread, although it is ugly: variables are not shared, and are copied on the creation of thread, which consumes memory.

forks is a thread module that implemented on fork, and IPC implemented using socket. It provides API that is very similiar as threads module.

Coro is something different. It is a cooperative model: you have to say cede() frequently to yeild CPU resource to other threads.

omnithreads says it's based on old 5005thread, but it has everything not shared by default. I don't know what's the difference.

Somebody says it's possible to do concurrency things in C using pthread, and do perl things using embedded perl interpreter. I've never tried such ugly method.

At last, we have fork() in most systems.

My question is: all those things above, which ones are both stable and light-weighted?

In reply to issue of concurrency: which module is better by llancet

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