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GH-111438: Add Support for Sharing Floats Between Interpreters (gh-111439)

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This only affects users of the APIs in pycore_crossinterp.h (AKA _xxsubinterpretersmodule.c and _xxinterpchannels.c).
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Anthony Shaw 2023-10-31 23:17:20 +09:00 • committed by GitHub
parent 2904d99839
commit ad6380bc34
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4 changed files with 34 additions and 2 deletions
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28
Python/crossinterp.c
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@ -585,6 +585,29 @@ _long_shared(PyThreadState *tstate, PyObject *obj,
return 0;
}
static PyObject *
_new_float_object(_PyCrossInterpreterData *data)
{
double * value_ptr = data->data;
return PyFloat_FromDouble(*value_ptr);
}
static int
_float_shared(PyThreadState *tstate, PyObject *obj,
_PyCrossInterpreterData *data)
{
if (_PyCrossInterpreterData_InitWithSize(
data, tstate->interp, sizeof(double), NULL,
_new_float_object
) < 0)
{
return -1;
}
double *shared = (double *)data->data;
*shared = PyFloat_AsDouble(obj);
return 0;
}
static PyObject *
_new_none_object(_PyCrossInterpreterData *data)
{
@ -624,4 +647,9 @@ _register_builtins_for_crossinterpreter_data(struct _xidregistry *xidregistry)
if (_xidregistry_add_type(xidregistry, &PyUnicode_Type, _str_shared) != 0) {
Py_FatalError("could not register str for cross-interpreter sharing");
}
// float
if (_xidregistry_add_type(xidregistry, &PyFloat_Type, _float_shared) != 0) {
Py_FatalError("could not register float for cross-interpreter sharing");
}
}