[Python-Dev] Release or not release the GIL

[Victor Stinner]

Hi,

While working on the implementation of the PEP 433, I saw different
places where Python asks for operating resources without releasing the
GIL.

In my implementation, I released the GIL in the following places. Is it correct?

- os.dup()
- os.dup2()
- os.pipe()
- socket.socketpair()

os.listdir() releases the GIL to call dup(), whereas os.dup() doesn't.

Victor