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bpo-29676: fix lsprof can't profile C method call. (GH523)

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When LOAD_METHOD is used for calling C mehtod, PyMethodDescrObject
was passed to profilefunc from 5566bbb.
But lsprof traces only PyCFunctionObject. Additionally, there can be
some third party extension which assumes passed arg is
PyCFunctionObject without calling PyCFunction_Check().

So make PyCFunctionObject from PyMethodDescrObject when
tstate->c_profilefunc is set.
This commit is contained in:
INADA Naoki 2017-03-07 14:24:37 +09:00 • committed by GitHub
parent d36a71637c
commit 93fac8dd35
1 changed files with 14 additions and 1 deletions
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15
Python/ceval.c
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@ -4818,7 +4818,20 @@ call_function(PyObject ***pp_stack, Py_ssize_t oparg, PyObject *kwnames)
}
else if (Py_TYPE(func) == &PyMethodDescr_Type) {
PyThreadState *tstate = PyThreadState_GET();
C_TRACE(x, _PyMethodDescr_FastCallKeywords(func, stack, nargs, kwnames));
if (tstate->use_tracing && tstate->c_profilefunc) {
// We need to create PyCFunctionObject for tracing.
PyMethodDescrObject *descr = (PyMethodDescrObject*)func;
func = PyCFunction_NewEx(descr->d_method, stack[0], NULL);
if (func == NULL) {
return NULL;
}
C_TRACE(x, _PyCFunction_FastCallKeywords(func, stack+1, nargs-1,
kwnames));
Py_DECREF(func);
}
else {
x = _PyMethodDescr_FastCallKeywords(func, stack, nargs, kwnames);
}
}
else {
if (PyMethod_Check(func) && PyMethod_GET_SELF(func) != NULL) {