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bpo-38644: Pass tstate to Py_EnterRecursiveCall() (GH-16997) 

* Add _Py_EnterRecursiveCall() and _Py_LeaveRecursiveCall() which
  require a tstate argument.
* Pass tstate to _Py_MakeRecCheck() and  _Py_CheckRecursiveCall().
* Convert Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() macros
  to static inline functions.

_PyThreadState_GET() is the most efficient way to get the tstate, and
so using it with _Py_EnterRecursiveCall() and
_Py_LeaveRecursiveCall() should be a little bit more efficient than
using Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() which use
the "slower" PyThreadState_GET().
This commit is contained in:
Victor Stinner 2019-11-05 00:51:22 +01:00 committed by GitHub
parent f4b1e3d7c6
commit be434dc038
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 201 additions and 136 deletions
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45
Include/cpython/ceval.h
View File

@ -11,20 +11,31 @@ PyAPI_DATA(int) _Py_CheckRecursionLimit;
#ifdef USE_STACKCHECK
/* With USE_STACKCHECK macro defined, trigger stack checks in
_Py_CheckRecursiveCall() on every 64th call to Py_EnterRecursiveCall. */
# define _Py_MakeRecCheck(x) \
(++(x) > _Py_CheckRecursionLimit || \
++(PyThreadState_GET()->stackcheck_counter) > 64)
static inline int _Py_MakeRecCheck(PyThreadState *tstate) {
return (++tstate->recursion_depth > _Py_CheckRecursionLimit
|| ++tstate->stackcheck_counter > 64);
}
#else
# define _Py_MakeRecCheck(x) (++(x) > _Py_CheckRecursionLimit)
static inline int _Py_MakeRecCheck(PyThreadState *tstate) {
return (++tstate->recursion_depth > _Py_CheckRecursionLimit);
}
#endif
PyAPI_FUNC(int) _Py_CheckRecursiveCall(const char *where);
PyAPI_FUNC(int) _Py_CheckRecursiveCall(
PyThreadState *tstate,
const char *where);
#define _Py_EnterRecursiveCall_macro(where) \
(_Py_MakeRecCheck(PyThreadState_GET()->recursion_depth) && \
_Py_CheckRecursiveCall(where))
static inline int _Py_EnterRecursiveCall(PyThreadState *tstate,
const char *where) {
return (_Py_MakeRecCheck(tstate) && _Py_CheckRecursiveCall(tstate, where));
}
#define Py_EnterRecursiveCall(where) _Py_EnterRecursiveCall_macro(where)
static inline int _Py_EnterRecursiveCall_inline(const char *where) {
PyThreadState *tstate = PyThreadState_GET();
return _Py_EnterRecursiveCall(tstate, where);
}
#define Py_EnterRecursiveCall(where) _Py_EnterRecursiveCall_inline(where)
/* Compute the "lower-water mark" for a recursion limit. When
@ -38,12 +49,18 @@ PyAPI_FUNC(int) _Py_CheckRecursiveCall(const char *where);
#define _Py_MakeEndRecCheck(x) \
(--(x) < _Py_RecursionLimitLowerWaterMark(_Py_CheckRecursionLimit))
#define _Py_LeaveRecursiveCall_macro() \
do{ if(_Py_MakeEndRecCheck(PyThreadState_GET()->recursion_depth)) \
PyThreadState_GET()->overflowed = 0; \
} while(0)
static inline void _Py_LeaveRecursiveCall(PyThreadState *tstate) {
if (_Py_MakeEndRecCheck(tstate->recursion_depth)) {
tstate->overflowed = 0;
}
}
#define Py_LeaveRecursiveCall() _Py_LeaveRecursiveCall_macro()
static inline void _Py_LeaveRecursiveCall_inline(void) {
PyThreadState *tstate = PyThreadState_GET();
_Py_LeaveRecursiveCall(tstate);
}
#define Py_LeaveRecursiveCall() _Py_LeaveRecursiveCall_inline()
#ifdef __cplusplus
}

80
Objects/abstract.c
View File

@ -1,6 +1,7 @@
/* Abstract Object Interface (many thanks to Jim Fulton) */
#include "Python.h"
#include "pycore_pyerrors.h"
#include "pycore_pystate.h"
#include <ctype.h>
#include "structmember.h" /* we need the offsetof() macro from there */
@ -2459,8 +2460,8 @@ recursive_isinstance(PyObject *inst, PyObject *cls)
return retval;
}
int
PyObject_IsInstance(PyObject *inst, PyObject *cls)
static int
object_isinstance(PyThreadState *tstate, PyObject *inst, PyObject *cls)
{
_Py_IDENTIFIER(__instancecheck__);
PyObject *checker;
@ -2475,34 +2476,31 @@ PyObject_IsInstance(PyObject *inst, PyObject *cls)
}
if (PyTuple_Check(cls)) {
Py_ssize_t i;
Py_ssize_t n;
int r = 0;
if (Py_EnterRecursiveCall(" in __instancecheck__"))
if (_Py_EnterRecursiveCall(tstate, " in __instancecheck__")) {
return -1;
n = PyTuple_GET_SIZE(cls);
for (i = 0; i < n; ++i) {
}
Py_ssize_t n = PyTuple_GET_SIZE(cls);
int r = 0;
for (Py_ssize_t i = 0; i < n; ++i) {
PyObject *item = PyTuple_GET_ITEM(cls, i);
r = PyObject_IsInstance(inst, item);
r = object_isinstance(tstate, inst, item);
if (r != 0)
/* either found it, or got an error */
break;
}
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return r;
}
checker = _PyObject_LookupSpecial(cls, &PyId___instancecheck__);
if (checker != NULL) {
PyObject *res;
int ok = -1;
if (Py_EnterRecursiveCall(" in __instancecheck__")) {
if (_Py_EnterRecursiveCall(tstate, " in __instancecheck__")) {
Py_DECREF(checker);
return ok;
}
res = _PyObject_CallOneArg(checker, inst);
Py_LeaveRecursiveCall();
PyObject *res = _PyObject_CallOneArg(checker, inst);
_Py_LeaveRecursiveCall(tstate);
Py_DECREF(checker);
if (res != NULL) {
ok = PyObject_IsTrue(res);
@ -2510,12 +2508,23 @@ PyObject_IsInstance(PyObject *inst, PyObject *cls)
}
return ok;
}
else if (PyErr_Occurred())
else if (_PyErr_Occurred(tstate)) {
return -1;
}
/* Probably never reached anymore. */
return recursive_isinstance(inst, cls);
}
int
PyObject_IsInstance(PyObject *inst, PyObject *cls)
{
PyThreadState *tstate = _PyThreadState_GET();
return object_isinstance(tstate, inst, cls);
}
static int
recursive_issubclass(PyObject *derived, PyObject *cls)
{
@ -2534,8 +2543,8 @@ recursive_issubclass(PyObject *derived, PyObject *cls)
return abstract_issubclass(derived, cls);
}
int
PyObject_IsSubclass(PyObject *derived, PyObject *cls)
static int
object_issubclass(PyThreadState *tstate, PyObject *derived, PyObject *cls)
{
_Py_IDENTIFIER(__subclasscheck__);
PyObject *checker;
@ -2549,34 +2558,32 @@ PyObject_IsSubclass(PyObject *derived, PyObject *cls)
}
if (PyTuple_Check(cls)) {
Py_ssize_t i;
Py_ssize_t n;
int r = 0;
if (Py_EnterRecursiveCall(" in __subclasscheck__"))
if (_Py_EnterRecursiveCall(tstate, " in __subclasscheck__")) {
return -1;
n = PyTuple_GET_SIZE(cls);
for (i = 0; i < n; ++i) {
}
Py_ssize_t n = PyTuple_GET_SIZE(cls);
int r = 0;
for (Py_ssize_t i = 0; i < n; ++i) {
PyObject *item = PyTuple_GET_ITEM(cls, i);
r = PyObject_IsSubclass(derived, item);
r = object_issubclass(tstate, derived, item);
if (r != 0)
/* either found it, or got an error */
break;
}
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return r;
}
checker = _PyObject_LookupSpecial(cls, &PyId___subclasscheck__);
if (checker != NULL) {
PyObject *res;
int ok = -1;
if (Py_EnterRecursiveCall(" in __subclasscheck__")) {
if (_Py_EnterRecursiveCall(tstate, " in __subclasscheck__")) {
Py_DECREF(checker);
return ok;
}
res = _PyObject_CallOneArg(checker, derived);
Py_LeaveRecursiveCall();
PyObject *res = _PyObject_CallOneArg(checker, derived);
_Py_LeaveRecursiveCall(tstate);
Py_DECREF(checker);
if (res != NULL) {
ok = PyObject_IsTrue(res);
@ -2584,12 +2591,23 @@ PyObject_IsSubclass(PyObject *derived, PyObject *cls)
}
return ok;
}
else if (PyErr_Occurred())
else if (_PyErr_Occurred(tstate)) {
return -1;
}
/* Probably never reached anymore. */
return recursive_issubclass(derived, cls);
}
int
PyObject_IsSubclass(PyObject *derived, PyObject *cls)
{
PyThreadState *tstate = _PyThreadState_GET();
return object_issubclass(tstate, derived, cls);
}
int
_PyObject_RealIsInstance(PyObject *inst, PyObject *cls)
{

44
Objects/call.c
View File

@ -1,5 +1,6 @@
#include "Python.h"
#include "pycore_object.h"
#include "pycore_pyerrors.h"
#include "pycore_pystate.h"
#include "pycore_tupleobject.h"
#include "frameobject.h"
@ -126,12 +127,15 @@ _PyObject_FastCallDict(PyObject *callable, PyObject *const *args,
PyObject *
_PyObject_MakeTpCall(PyObject *callable, PyObject *const *args, Py_ssize_t nargs, PyObject *keywords)
{
PyThreadState *tstate = _PyThreadState_GET();
/* Slow path: build a temporary tuple for positional arguments and a
* temporary dictionary for keyword arguments (if any) */
ternaryfunc call = Py_TYPE(callable)->tp_call;
if (call == NULL) {
PyErr_Format(PyExc_TypeError, "'%.200s' object is not callable",
Py_TYPE(callable)->tp_name);
_PyErr_Format(tstate, PyExc_TypeError,
"'%.200s' object is not callable",
Py_TYPE(callable)->tp_name);
return NULL;
}
@ -162,10 +166,10 @@ _PyObject_MakeTpCall(PyObject *callable, PyObject *const *args, Py_ssize_t nargs
}
PyObject *result = NULL;
if (Py_EnterRecursiveCall(" while calling a Python object") == 0)
if (_Py_EnterRecursiveCall(tstate, " while calling a Python object") == 0)
{
result = call(callable, argstuple, kwdict);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
}
Py_DECREF(argstuple);
@ -220,13 +224,14 @@ PyVectorcall_Call(PyObject *callable, PyObject *tuple, PyObject *kwargs)
PyObject *
PyObject_Call(PyObject *callable, PyObject *args, PyObject *kwargs)
{
PyThreadState *tstate = _PyThreadState_GET();
ternaryfunc call;
PyObject *result;
/* PyObject_Call() must not be called with an exception set,
because it can clear it (directly or indirectly) and so the
caller loses its exception */
assert(!PyErr_Occurred());
assert(!_PyErr_Occurred(tstate));
assert(PyTuple_Check(args));
assert(kwargs == NULL || PyDict_Check(kwargs));
@ -236,17 +241,19 @@ PyObject_Call(PyObject *callable, PyObject *args, PyObject *kwargs)
else {
call = callable->ob_type->tp_call;
if (call == NULL) {
PyErr_Format(PyExc_TypeError, "'%.200s' object is not callable",
callable->ob_type->tp_name);
_PyErr_Format(tstate, PyExc_TypeError,
"'%.200s' object is not callable",
callable->ob_type->tp_name);
return NULL;
}
if (Py_EnterRecursiveCall(" while calling a Python object"))
if (_Py_EnterRecursiveCall(tstate, " while calling a Python object")) {
return NULL;
}
result = (*call)(callable, args, kwargs);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return _Py_CheckFunctionResult(callable, result, NULL);
}
@ -266,30 +273,27 @@ static PyObject* _Py_HOT_FUNCTION
function_code_fastcall(PyCodeObject *co, PyObject *const *args, Py_ssize_t nargs,
PyObject *globals)
{
PyFrameObject *f;
PyThreadState *tstate = _PyThreadState_GET();
PyObject **fastlocals;
Py_ssize_t i;
PyObject *result;
assert(globals != NULL);
PyThreadState *tstate = _PyThreadState_GET();
assert(tstate != NULL);
/* XXX Perhaps we should create a specialized
_PyFrame_New_NoTrack() that doesn't take locals, but does
take builtins without sanity checking them.
*/
assert(tstate != NULL);
f = _PyFrame_New_NoTrack(tstate, co, globals, NULL);
PyFrameObject *f = _PyFrame_New_NoTrack(tstate, co, globals, NULL);
if (f == NULL) {
return NULL;
}
fastlocals = f->f_localsplus;
PyObject **fastlocals = f->f_localsplus;
for (i = 0; i < nargs; i++) {
for (Py_ssize_t i = 0; i < nargs; i++) {
Py_INCREF(*args);
fastlocals[i] = *args++;
}
result = PyEval_EvalFrameEx(f,0);
PyObject *result = PyEval_EvalFrameEx(f, 0);
if (Py_REFCNT(f) > 1) {
Py_DECREF(f);

34
Objects/descrobject.c
View File

@ -271,9 +271,9 @@ method_check_args(PyObject *func, PyObject *const *args, Py_ssize_t nargs, PyObj
}
static inline funcptr
method_enter_call(PyObject *func)
method_enter_call(PyThreadState *tstate, PyObject *func)
{
if (Py_EnterRecursiveCall(" while calling a Python object")) {
if (_Py_EnterRecursiveCall(tstate, " while calling a Python object")) {
return NULL;
}
return (funcptr)((PyMethodDescrObject *)func)->d_method->ml_meth;
@ -284,6 +284,7 @@ static PyObject *
method_vectorcall_VARARGS(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
PyThreadState *tstate = _PyThreadState_GET();
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
if (method_check_args(func, args, nargs, kwnames)) {
return NULL;
@ -292,14 +293,14 @@ method_vectorcall_VARARGS(
if (argstuple == NULL) {
return NULL;
}
PyCFunction meth = (PyCFunction)method_enter_call(func);
PyCFunction meth = (PyCFunction)method_enter_call(tstate, func);
if (meth == NULL) {
Py_DECREF(argstuple);
return NULL;
}
PyObject *result = meth(args[0], argstuple);
Py_DECREF(argstuple);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return result;
}
@ -307,6 +308,7 @@ static PyObject *
method_vectorcall_VARARGS_KEYWORDS(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
PyThreadState *tstate = _PyThreadState_GET();
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
if (method_check_args(func, args, nargs, NULL)) {
return NULL;
@ -325,12 +327,12 @@ method_vectorcall_VARARGS_KEYWORDS(
}
}
PyCFunctionWithKeywords meth = (PyCFunctionWithKeywords)
method_enter_call(func);
method_enter_call(tstate, func);
if (meth == NULL) {
goto exit;
}
result = meth(args[0], argstuple, kwdict);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
exit:
Py_DECREF(argstuple);
Py_XDECREF(kwdict);
@ -341,17 +343,18 @@ static PyObject *
method_vectorcall_FASTCALL(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
PyThreadState *tstate = _PyThreadState_GET();
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
if (method_check_args(func, args, nargs, kwnames)) {
return NULL;
}
_PyCFunctionFast meth = (_PyCFunctionFast)
method_enter_call(func);
method_enter_call(tstate, func);
if (meth == NULL) {
return NULL;
}
PyObject *result = meth(args[0], args+1, nargs-1);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return result;
}
@ -359,17 +362,18 @@ static PyObject *
method_vectorcall_FASTCALL_KEYWORDS(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
PyThreadState *tstate = _PyThreadState_GET();
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
if (method_check_args(func, args, nargs, NULL)) {
return NULL;
}
_PyCFunctionFastWithKeywords meth = (_PyCFunctionFastWithKeywords)
method_enter_call(func);
method_enter_call(tstate, func);
if (meth == NULL) {
return NULL;
}
PyObject *result = meth(args[0], args+1, nargs-1, kwnames);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return result;
}
@ -377,6 +381,7 @@ static PyObject *
method_vectorcall_NOARGS(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
PyThreadState *tstate = _PyThreadState_GET();
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
if (method_check_args(func, args, nargs, kwnames)) {
return NULL;
@ -386,12 +391,12 @@ method_vectorcall_NOARGS(
"%.200s() takes no arguments (%zd given)", get_name(func), nargs-1);
return NULL;
}
PyCFunction meth = (PyCFunction)method_enter_call(func);
PyCFunction meth = (PyCFunction)method_enter_call(tstate, func);
if (meth == NULL) {
return NULL;
}
PyObject *result = meth(args[0], NULL);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return result;
}
@ -399,6 +404,7 @@ static PyObject *
method_vectorcall_O(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
PyThreadState *tstate = _PyThreadState_GET();
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
if (method_check_args(func, args, nargs, kwnames)) {
return NULL;
@ -409,12 +415,12 @@ method_vectorcall_O(
get_name(func), nargs-1);
return NULL;
}
PyCFunction meth = (PyCFunction)method_enter_call(func);
PyCFunction meth = (PyCFunction)method_enter_call(tstate, func);
if (meth == NULL) {
return NULL;
}
PyObject *result = meth(args[0], args[1]);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return result;
}

50
Objects/methodobject.c
View File

@ -3,6 +3,7 @@
#include "Python.h"
#include "pycore_object.h"
#include "pycore_pyerrors.h"
#include "pycore_pymem.h"
#include "pycore_pystate.h"
#include "structmember.h"
@ -344,22 +345,22 @@ get_name(PyObject *func)
typedef void (*funcptr)(void);
static inline int
cfunction_check_kwargs(PyObject *func, PyObject *kwnames)
cfunction_check_kwargs(PyThreadState *tstate, PyObject *func, PyObject *kwnames)
{
assert(!PyErr_Occurred());
assert(!_PyErr_Occurred(tstate));
assert(PyCFunction_Check(func));
if (kwnames && PyTuple_GET_SIZE(kwnames)) {
PyErr_Format(PyExc_TypeError,
"%.200s() takes no keyword arguments", get_name(func));
_PyErr_Format(tstate, PyExc_TypeError,
"%.200s() takes no keyword arguments", get_name(func));
return -1;
}
return 0;
}
static inline funcptr
cfunction_enter_call(PyObject *func)
cfunction_enter_call(PyThreadState *tstate, PyObject *func)
{
if (Py_EnterRecursiveCall(" while calling a Python object")) {
if (_Py_EnterRecursiveCall(tstate, " while calling a Python object")) {
return NULL;
}
return (funcptr)PyCFunction_GET_FUNCTION(func);
@ -370,17 +371,18 @@ static PyObject *
cfunction_vectorcall_FASTCALL(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
if (cfunction_check_kwargs(func, kwnames)) {
PyThreadState *tstate = _PyThreadState_GET();
if (cfunction_check_kwargs(tstate, func, kwnames)) {
return NULL;
}
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
_PyCFunctionFast meth = (_PyCFunctionFast)
cfunction_enter_call(func);
cfunction_enter_call(tstate, func);
if (meth == NULL) {
return NULL;
}
PyObject *result = meth(PyCFunction_GET_SELF(func), args, nargs);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return result;
}
@ -388,14 +390,15 @@ static PyObject *
cfunction_vectorcall_FASTCALL_KEYWORDS(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
PyThreadState *tstate = _PyThreadState_GET();
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
_PyCFunctionFastWithKeywords meth = (_PyCFunctionFastWithKeywords)
cfunction_enter_call(func);
cfunction_enter_call(tstate, func);
if (meth == NULL) {
return NULL;
}
PyObject *result = meth(PyCFunction_GET_SELF(func), args, nargs, kwnames);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return result;
}
@ -403,21 +406,23 @@ static PyObject *
cfunction_vectorcall_NOARGS(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
if (cfunction_check_kwargs(func, kwnames)) {
PyThreadState *tstate = _PyThreadState_GET();
if (cfunction_check_kwargs(tstate, func, kwnames)) {
return NULL;
}
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
if (nargs != 0) {
PyErr_Format(PyExc_TypeError,
"%.200s() takes no arguments (%zd given)", get_name(func), nargs);
_PyErr_Format(tstate, PyExc_TypeError,
"%.200s() takes no arguments (%zd given)",
get_name(func), nargs);
return NULL;
}
PyCFunction meth = (PyCFunction)cfunction_enter_call(func);
PyCFunction meth = (PyCFunction)cfunction_enter_call(tstate, func);
if (meth == NULL) {
return NULL;
}
PyObject *result = meth(PyCFunction_GET_SELF(func), NULL);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return result;
}
@ -425,22 +430,23 @@ static PyObject *
cfunction_vectorcall_O(
PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
{
if (cfunction_check_kwargs(func, kwnames)) {
PyThreadState *tstate = _PyThreadState_GET();
if (cfunction_check_kwargs(tstate, func, kwnames)) {
return NULL;
}
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
if (nargs != 1) {
PyErr_Format(PyExc_TypeError,
"%.200s() takes exactly one argument (%zd given)",
get_name(func), nargs);
_PyErr_Format(tstate, PyExc_TypeError,
"%.200s() takes exactly one argument (%zd given)",
get_name(func), nargs);
return NULL;
}
PyCFunction meth = (PyCFunction)cfunction_enter_call(func);
PyCFunction meth = (PyCFunction)cfunction_enter_call(tstate, func);
if (meth == NULL) {
return NULL;
}
PyObject *result = meth(PyCFunction_GET_SELF(func), args[0]);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
return result;
}

70
Objects/object.c
View File

@ -2,10 +2,11 @@
/* Generic object operations; and implementation of None */
#include "Python.h"
#include "pycore_context.h"
#include "pycore_initconfig.h"
#include "pycore_object.h"
#include "pycore_pyerrors.h"
#include "pycore_pystate.h"
#include "pycore_context.h"
#include "frameobject.h"
#include "interpreteridobject.h"
@ -525,31 +526,37 @@ PyObject_Repr(PyObject *v)
return PyUnicode_FromFormat("<%s object at %p>",
v->ob_type->tp_name, v);
PyThreadState *tstate = _PyThreadState_GET();
#ifdef Py_DEBUG
/* PyObject_Repr() must not be called with an exception set,
because it can clear it (directly or indirectly) and so the
caller loses its exception */
assert(!PyErr_Occurred());
assert(!_PyErr_Occurred(tstate));
#endif
/* It is possible for a type to have a tp_repr representation that loops
infinitely. */
if (Py_EnterRecursiveCall(" while getting the repr of an object"))
if (_Py_EnterRecursiveCall(tstate,
" while getting the repr of an object")) {
return NULL;
}
res = (*v->ob_type->tp_repr)(v);
Py_LeaveRecursiveCall();
if (res == NULL)
_Py_LeaveRecursiveCall(tstate);
if (res == NULL) {
return NULL;
}
if (!PyUnicode_Check(res)) {
PyErr_Format(PyExc_TypeError,
"__repr__ returned non-string (type %.200s)",
res->ob_type->tp_name);
_PyErr_Format(tstate, PyExc_TypeError,
"__repr__ returned non-string (type %.200s)",
res->ob_type->tp_name);
Py_DECREF(res);
return NULL;
}
#ifndef Py_DEBUG
if (PyUnicode_READY(res) < 0)
if (PyUnicode_READY(res) < 0) {
return NULL;
}
#endif
return res;
}
@ -579,31 +586,36 @@ PyObject_Str(PyObject *v)
if (Py_TYPE(v)->tp_str == NULL)
return PyObject_Repr(v);
PyThreadState *tstate = _PyThreadState_GET();
#ifdef Py_DEBUG
/* PyObject_Str() must not be called with an exception set,
because it can clear it (directly or indirectly) and so the
caller loses its exception */
assert(!PyErr_Occurred());
assert(!_PyErr_Occurred(tstate));
#endif
/* It is possible for a type to have a tp_str representation that loops
infinitely. */
if (Py_EnterRecursiveCall(" while getting the str of an object"))
if (_Py_EnterRecursiveCall(tstate, " while getting the str of an object")) {
return NULL;
}
res = (*Py_TYPE(v)->tp_str)(v);
Py_LeaveRecursiveCall();
if (res == NULL)
_Py_LeaveRecursiveCall(tstate);
if (res == NULL) {
return NULL;
}
if (!PyUnicode_Check(res)) {
PyErr_Format(PyExc_TypeError,
"__str__ returned non-string (type %.200s)",
Py_TYPE(res)->tp_name);
_PyErr_Format(tstate, PyExc_TypeError,
"__str__ returned non-string (type %.200s)",
Py_TYPE(res)->tp_name);
Py_DECREF(res);
return NULL;
}
#ifndef Py_DEBUG
if (PyUnicode_READY(res) < 0)
if (PyUnicode_READY(res) < 0) {
return NULL;
}
#endif
assert(_PyUnicode_CheckConsistency(res, 1));
return res;
@ -707,7 +719,7 @@ static const char * const opstrings[] = {"<", "<=", "==", "!=", ">", ">="};
/* Perform a rich comparison, raising TypeError when the requested comparison
operator is not supported. */
static PyObject *
do_richcompare(PyObject *v, PyObject *w, int op)
do_richcompare(PyThreadState *tstate, PyObject *v, PyObject *w, int op)
{
richcmpfunc f;
PyObject *res;
@ -744,11 +756,11 @@ do_richcompare(PyObject *v, PyObject *w, int op)
res = (v != w) ? Py_True : Py_False;
break;
default:
PyErr_Format(PyExc_TypeError,
"'%s' not supported between instances of '%.100s' and '%.100s'",
opstrings[op],
v->ob_type->tp_name,
w->ob_type->tp_name);
_PyErr_Format(tstate, PyExc_TypeError,
"'%s' not supported between instances of '%.100s' and '%.100s'",
opstrings[op],
v->ob_type->tp_name,
w->ob_type->tp_name);
return NULL;
}
Py_INCREF(res);
@ -761,18 +773,20 @@ do_richcompare(PyObject *v, PyObject *w, int op)
PyObject *
PyObject_RichCompare(PyObject *v, PyObject *w, int op)
{
PyObject *res;
PyThreadState *tstate = _PyThreadState_GET();
assert(Py_LT <= op && op <= Py_GE);
if (v == NULL || w == NULL) {
if (!PyErr_Occurred())
if (!_PyErr_Occurred(tstate)) {
PyErr_BadInternalCall();
}
return NULL;
}
if (Py_EnterRecursiveCall(" in comparison"))
if (_Py_EnterRecursiveCall(tstate, " in comparison")) {
return NULL;
res = do_richcompare(v, w, op);
Py_LeaveRecursiveCall();
}
PyObject *res = do_richcompare(tstate, v, w, op);
_Py_LeaveRecursiveCall(tstate);
return res;
}

14
Python/ceval.c
View File

@ -659,16 +659,15 @@ Py_SetRecursionLimit(int new_limit)
_Py_CheckRecursionLimit = ceval->recursion_limit;
}
/* the macro Py_EnterRecursiveCall() only calls _Py_CheckRecursiveCall()
/* The function _Py_EnterRecursiveCall() only calls _Py_CheckRecursiveCall()
if the recursion_depth reaches _Py_CheckRecursionLimit.
If USE_STACKCHECK, the macro decrements _Py_CheckRecursionLimit
to guarantee that _Py_CheckRecursiveCall() is regularly called.
Without USE_STACKCHECK, there is no need for this. */
int
_Py_CheckRecursiveCall(const char *where)
_Py_CheckRecursiveCall(PyThreadState *tstate, const char *where)
{
_PyRuntimeState *runtime = &_PyRuntime;
PyThreadState *tstate = _PyRuntimeState_GetThreadState(runtime);
int recursion_limit = runtime->ceval.recursion_limit;
#ifdef USE_STACKCHECK
@ -1073,8 +1072,9 @@ _PyEval_EvalFrameDefault(PyFrameObject *f, int throwflag)
/* Start of code */
/* push frame */
if (Py_EnterRecursiveCall(""))
if (_Py_EnterRecursiveCall(tstate, "")) {
return NULL;
}
tstate->frame = f;
@ -3810,7 +3810,7 @@ exit_yielding:
exit_eval_frame:
if (PyDTrace_FUNCTION_RETURN_ENABLED())
dtrace_function_return(f);
Py_LeaveRecursiveCall();
_Py_LeaveRecursiveCall(tstate);
f->f_executing = 0;
tstate->frame = f->f_back;
@ -5641,12 +5641,12 @@ maybe_dtrace_line(PyFrameObject *frame,
int Py_EnterRecursiveCall(const char *where)
{
return _Py_EnterRecursiveCall_macro(where);
return _Py_EnterRecursiveCall_inline(where);
}
#undef Py_LeaveRecursiveCall
void Py_LeaveRecursiveCall(void)
{
_Py_LeaveRecursiveCall_macro();
_Py_LeaveRecursiveCall_inline();
}