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bpo-45256: Remove the usage of the C stack in Python to Python calls (GH-28488)

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Ths commit inlines calls to Python functions in the eval loop and steals all the arguments in the call from the caller for
performance.
This commit is contained in:
Pablo Galindo Salgado 2021-10-09 16:51:30 +01:00 • committed by GitHub
parent ec04db74e2
commit b4903afd4d
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 224 additions and 64 deletions
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20
Objects/tupleobject.c
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@ -484,6 +484,26 @@ _PyTuple_FromArray(PyObject *const *src, Py_ssize_t n)
return (PyObject *)tuple;
}
PyObject *
_PyTuple_FromArraySteal(PyObject *const *src, Py_ssize_t n)
{
if (n == 0) {
return tuple_get_empty();
}
PyTupleObject *tuple = tuple_alloc(n);
if (tuple == NULL) {
return NULL;
}
PyObject **dst = tuple->ob_item;
for (Py_ssize_t i = 0; i < n; i++) {
PyObject *item = src[i];
dst[i] = item;
}
_PyObject_GC_TRACK(tuple);
return (PyObject *)tuple;
}
static PyObject *
tupleslice(PyTupleObject *a, Py_ssize_t ilow,
Py_ssize_t ihigh)