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gh-117398: Convert datetime.IsoCalendarDate To A Heap Type by ericsnowcurrently · Pull Request #119637 · python/cpython · GitHub

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gh-117398: Convert datetime.IsoCalendarDate To A Heap Type #119637

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Merged
ericsnowcurrently merged 3 commits into from
May 28, 2024
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gh-117398: Convert datetime.IsoCalendarDate To A Heap Type #119637

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d7c1dd0
Clarify capi types vs. others.
ericsnowcurrently May 27, 2024
a88effb
Make datetime.IsoCalendarDate a heap type.
ericsnowcurrently May 27, 2024
b90d790
Merge branch 'main' into datetime-convert-heap-types
ericsnowcurrently May 28, 2024
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82 changes: 60 additions & 22 deletions Modules/_datetimemodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -26,14 +26,18 @@
#endif

typedef struct {
/* Static types exposed by the datetime C-API. */
PyTypeObject *date_type;
PyTypeObject *datetime_type;
PyTypeObject *delta_type;
PyTypeObject *isocalendar_date_type;
PyTypeObject *time_type;
PyTypeObject *tzinfo_type;
/* Exposed indirectly via TimeZone_UTC. */
PyTypeObject *timezone_type;

/* Other module classes. */
PyTypeObject *isocalendar_date_type;

/* Conversion factors. */
PyObject *us_per_ms; // 1_000
PyObject *us_per_second; // 1_000_000
Expand Down Expand Up @@ -3460,17 +3464,40 @@ static PyMethodDef iso_calendar_date_methods[] = {
{NULL, NULL},
};

static PyTypeObject PyDateTime_IsoCalendarDateType = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "datetime.IsoCalendarDate",
.tp_basicsize = sizeof(PyDateTime_IsoCalendarDate),
.tp_repr = (reprfunc) iso_calendar_date_repr,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = iso_calendar_date__doc__,
.tp_methods = iso_calendar_date_methods,
.tp_getset = iso_calendar_date_getset,
// .tp_base = &PyTuple_Type, // filled in PyInit__datetime
.tp_new = iso_calendar_date_new,
static int
iso_calendar_date_traverse(PyDateTime_IsoCalendarDate *self, visitproc visit,
void *arg)
{
Py_VISIT(Py_TYPE(self));
return PyTuple_Type.tp_traverse((PyObject *)self, visit, arg);
}

static void
iso_calendar_date_dealloc(PyDateTime_IsoCalendarDate *self)
{
PyTypeObject *tp = Py_TYPE(self);
PyTuple_Type.tp_dealloc((PyObject *)self); // delegate GC-untrack as well
Py_DECREF(tp);
}

static PyType_Slot isocal_slots[] = {
{Py_tp_repr, iso_calendar_date_repr},
{Py_tp_doc, (void *)iso_calendar_date__doc__},
{Py_tp_methods, iso_calendar_date_methods},
{Py_tp_getset, iso_calendar_date_getset},
{Py_tp_new, iso_calendar_date_new},
{Py_tp_dealloc, iso_calendar_date_dealloc},
{Py_tp_traverse, iso_calendar_date_traverse},
{0, NULL},
};

static PyType_Spec isocal_spec = {
.name = "datetime.IsoCalendarDate",
.basicsize = sizeof(PyDateTime_IsoCalendarDate),
.flags = (Py_TPFLAGS_DEFAULT |
Py_TPFLAGS_HAVE_GC |
Py_TPFLAGS_IMMUTABLETYPE),
.slots = isocal_slots,
};

/*[clinic input]
Expand Down Expand Up @@ -6842,22 +6869,25 @@ create_timezone_from_delta(int days, int sec, int ms, int normalize)
}

static int
init_state(datetime_state *st)
init_state(datetime_state *st, PyTypeObject *PyDateTime_IsoCalendarDateType)
{
// While datetime uses global module "state", we unly initialize it once.
// The PyLong objects created here (once per process) are not decref'd.
if (st->initialized) {
return 0;
}

/* Static types exposed by the C-API. */
st->date_type = &PyDateTime_DateType;
st->datetime_type = &PyDateTime_DateTimeType;
st->delta_type = &PyDateTime_DeltaType;
st->isocalendar_date_type = &PyDateTime_IsoCalendarDateType;
st->time_type = &PyDateTime_TimeType;
st->tzinfo_type = &PyDateTime_TZInfoType;
st->timezone_type = &PyDateTime_TimeZoneType;

/* Per-module heap types. */
st->isocalendar_date_type = PyDateTime_IsoCalendarDateType;

st->us_per_ms = PyLong_FromLong(1000);
if (st->us_per_ms == NULL) {
return -1;
Expand Down Expand Up @@ -6914,11 +6944,10 @@ _datetime_exec(PyObject *module)
// `&...` is not a constant expression according to a strict reading
// of C standards. Fill tp_base at run-time rather than statically.
// See https://bugs.python.org/issue40777
PyDateTime_IsoCalendarDateType.tp_base = &PyTuple_Type;
PyDateTime_TimeZoneType.tp_base = &PyDateTime_TZInfoType;
PyDateTime_DateTimeType.tp_base = &PyDateTime_DateType;

PyTypeObject *types[] = {
PyTypeObject *capi_types[] = {
&PyDateTime_DateType,
&PyDateTime_DateTimeType,
&PyDateTime_TimeType,
Expand All @@ -6927,18 +6956,27 @@ _datetime_exec(PyObject *module)
&PyDateTime_TimeZoneType,
};

for (size_t i = 0; i < Py_ARRAY_LENGTH(types); i++) {
if (PyModule_AddType(module, types[i]) < 0) {
for (size_t i = 0; i < Py_ARRAY_LENGTH(capi_types); i++) {
if (PyModule_AddType(module, capi_types[i]) < 0) {
goto error;
}
}

if (PyType_Ready(&PyDateTime_IsoCalendarDateType) < 0) {
goto error;
}
#define CREATE_TYPE(VAR, SPEC, BASE) \
do { \
VAR = (PyTypeObject *)PyType_FromModuleAndSpec( \
module, SPEC, (PyObject *)BASE); \
if (VAR == NULL) { \
goto error; \
} \
} while (0)

PyTypeObject *PyDateTime_IsoCalendarDateType = NULL;
CREATE_TYPE(PyDateTime_IsoCalendarDateType, &isocal_spec, &PyTuple_Type);
#undef CREATE_TYPE

datetime_state *st = get_datetime_state();
if (init_state(st) < 0) {
if (init_state(st, PyDateTime_IsoCalendarDateType) < 0) {
goto error;
}

Expand Down
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