I'm guessing those system calls are just implemented by the kernel and cannot block for I/O, so it was deemed unnecessary to release the GIL around them. I don't mind changing that though, you can never know what happens when you make a system call.
On Thu, Jan 31, 2013 at 4:07 PM, Victor Stinner email@example.com wrote:
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.listdir() releases the GIL to call dup(), whereas os.dup() doesn't.
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