단일 파이썬 프로세스에서 녹색 스레드와 기본 스레드를 혼합하는 것이 안전합니까?

Question

첫째, 표준 라이브러리에서 Python 네이티브 스레드로 이벤트 또는 GEVENT와 같은 녹색 스레드를 혼합하는 것이 안전합니다. 동일한 파이썬 프로세스의 lib / threading.py?

둘째, 안전하다면 나쁜 생각입니까?

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.