É seguro misturar fios verdes e roscas nativas em um único processo de python?

Question

Em primeiro lugar, é seguro misturar fios verdes, como Eventlet ou GEVENT com threads nativos de Python da biblioteca padrão, isto é, lib / threading.py no mesmo processo de python?

Em segundo lugar, se é seguro, é uma má ideia?

Answer 1

With gevent < 1.0 it is most likely a bad idea, as libevent isn't thread safe. You might be okay if you make sure that the OS threads never interact with libevent… But that could be tricky, and bugs cause by libevent's lack of thread safety don't sound like any fun to debug.

However, gevent >= 1.0 uses libev, which is entirely thread safe. So (as far as I can tell) there's no problem mixing green threads and OS threads.

Answer 2

gevent provides monkey patching abilities for threads.

Greenlets only switch to eachother within one thread, so one thread's greenlets will be completely separate and incommunicado from another's.

I wouldn't suggest using multiple threads of greenlets until you've shown you have a performance need to do so.