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gh-71587: Drop local reference cache to _strptime module in _datetime #120224

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Merged
ericsnowcurrently merged 10 commits into from
Jun 12, 2024
Merged

gh-71587: Drop local reference cache to _strptime module in _datetime #120224

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2b82d53
add test
neonene Jun 7, 2024
085e37c
make cache per-module
neonene Jun 7, 2024
e65bec3
add NEWS
neonene Jun 7, 2024
6bb0141
fix NEWS
neonene Jun 7, 2024
8a0ea7b
do not copy _strptime from old module state
neonene Jun 7, 2024
39a4259
Apply suggestions from code review
neonene Jun 7, 2024
33e0966
insert a comment
neonene Jun 7, 2024
12fad4c
use PyImport_Import(&_Py_ID(_strptime)) without cache
neonene Jun 7, 2024
341561b
Update globals-to-fix.tsv
neonene Jun 8, 2024
ba2d0a5
Merge branch 'main' into strptime
neonene Jun 8, 2024
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use PyImport_Import(&_Py_ID(_strptime)) without cache
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@neonene
neonene committed Jun 7, 2024
commit 12fad4c4d09908f52f1c1a98344bcd9d55580f9f
1 change: 1 addition & 0 deletions Include/internal/pycore_global_objects_fini_generated.h
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1 change: 1 addition & 0 deletions Include/internal/pycore_global_strings.h
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Original file line number Diff line number Diff line change
Expand Up @@ -266,6 +266,7 @@ struct _Py_global_strings {
STRUCT_FOR_ID(_showwarnmsg)
STRUCT_FOR_ID(_shutdown)
STRUCT_FOR_ID(_slotnames)
STRUCT_FOR_ID(_strptime)
STRUCT_FOR_ID(_strptime_datetime)
STRUCT_FOR_ID(_swappedbytes_)
STRUCT_FOR_ID(_type_)
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1 change: 1 addition & 0 deletions Include/internal/pycore_runtime_init_generated.h
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3 changes: 3 additions & 0 deletions Include/internal/pycore_unicodeobject_generated.h
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24 changes: 5 additions & 19 deletions Modules/_datetimemodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -50,9 +50,6 @@ typedef struct {

/* The interned Unix epoch datetime instance */
PyObject *epoch;

/* _strptime module */
PyObject *strptime;
} datetime_state;

/* The module has a fixed number of static objects, due to being exposed
Expand Down Expand Up @@ -5517,26 +5514,18 @@ datetime_utcfromtimestamp(PyObject *cls, PyObject *args)
static PyObject *
datetime_strptime(PyObject *cls, PyObject *args)
{
PyObject *string, *format;
PyObject *string, *format, *result;

if (!PyArg_ParseTuple(args, "UU:strptime", &string, &format))
return NULL;

PyObject *result = NULL;
PyObject *current_mod = NULL;
datetime_state *st = GET_CURRENT_STATE(current_mod);
PyObject *module = st->strptime;
PyObject *module = PyImport_Import(&_Py_ID(_strptime));
if (module == NULL) {
module = PyImport_ImportModule("_strptime");
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if (module == NULL) {
goto exit;
}
st->strptime = module;
return NULL;
}
result = PyObject_CallMethodObjArgs(module, &_Py_ID(_strptime_datetime),
cls, string, format, NULL);
exit:
RELEASE_CURRENT_STATE(st, current_mod);
Py_DECREF(module);
return result;
}

Expand Down Expand Up @@ -7068,7 +7057,6 @@ init_state(datetime_state *st, PyObject *module, PyObject *old_module)
.us_per_week = Py_NewRef(st_old->us_per_week),
.seconds_per_day = Py_NewRef(st_old->seconds_per_day),
.epoch = Py_NewRef(st_old->epoch),
.strptime = st->strptime,
};
return 0;
}
Expand Down Expand Up @@ -7121,8 +7109,7 @@ traverse_state(datetime_state *st, visitproc visit, void *arg)
{
/* heap types */
Py_VISIT(st->isocalendar_date_type);
/* containers */
Py_VISIT(st->strptime);

return 0;
}

Expand All @@ -7138,7 +7125,6 @@ clear_state(datetime_state *st)
Py_CLEAR(st->us_per_week);
Py_CLEAR(st->seconds_per_day);
Py_CLEAR(st->epoch);
Py_CLEAR(st->strptime);
return 0;
}

Expand Down