Sturla Molden skrev:
> I have always believed PyMem_Malloc call PyArena_Malloc with Python's
> heap as arena. PyArena_Malloc is a non-threadsafe reimplementation of
> malloc.
>
> I have a problem finding PyMem_Malloc in Python sources.
>
>
In normal mode we have a direct call to malloc, which don't require the GIL if
libc is thread-safe:
void *
PyMem_Malloc(size_t nbytes)
{
return PyMem_MALLOC(nbytes);
}
#define PyMem_MALLOC(n) (((n) < 0 || (n) > PY_SSIZE_T_MAX) ? NULL \
: malloc((n) ? (n) : 1))
In debug mode, PyMem_Malloc finally becomes a call to PyObject_Malloc,
which requires the GIL.
S.M.
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