[issue11382] some posix module functions unnecessarily release the GIL

[Charles-Francois Natali]

Charles-Francois Natali <neologix at free.fr> added the comment:

I didn't even know that Windows had such calls.
But anyway, if we start releasing the GIL around each malloc call, then it's going to get really complicated:

static PyObject *
posix_geteuid(PyObject *self, PyObject *noargs)
{
 	return PyLong_FromLong((long)geteuid());
}

PyLong_FromLong -> _PyLong_New -> PyObject_MALLOC which can call malloc.

As for DuplicateHandle, I assume it's as fast as Unix's dup(2).

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