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gh-126703: add freelist for PyComplexObject's #135233

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Merged
merged 3 commits into from
Jun 13, 2025
Merged

gh-126703: add freelist for PyComplexObject's #135233

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f031f94
gh-126703: add freelist for PyComplexObject's
skirpichev Jun 7, 2025
cf5287a
Merge branch 'master' into complexes-freelist/126703
skirpichev Jun 13, 2025
b5946f0
address review: _PyObject_ClearFreeLists()
skirpichev Jun 13, 2025
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2 changes: 2 additions & 0 deletions Include/internal/pycore_freelist_state.h
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@ extern "C" {
# define Py_dicts_MAXFREELIST 80
# define Py_dictkeys_MAXFREELIST 80
# define Py_floats_MAXFREELIST 100
# define Py_complexes_MAXFREELIST 100
# define Py_ints_MAXFREELIST 100
# define Py_slices_MAXFREELIST 1
# define Py_ranges_MAXFREELIST 6
Expand Down Expand Up @@ -43,6 +44,7 @@ struct _Py_freelist {

struct _Py_freelists {
struct _Py_freelist floats;
struct _Py_freelist complexes;
struct _Py_freelist ints;
struct _Py_freelist tuples[PyTuple_MAXSAVESIZE];
struct _Py_freelist lists;
Expand Down
28 changes: 22 additions & 6 deletions Objects/complexobject.c
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Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@

/* Complex object implementation */

/* Borrows heavily from floatobject.c */
Expand All @@ -9,6 +8,7 @@
#include "pycore_call.h" // _PyObject_CallNoArgs()
#include "pycore_complexobject.h" // _PyComplex_FormatAdvancedWriter()
#include "pycore_floatobject.h" // _Py_convert_int_to_double()
#include "pycore_freelist.h" // _Py_FREELIST_FREE(), _Py_FREELIST_POP()
#include "pycore_long.h" // _PyLong_GetZero()
#include "pycore_object.h" // _PyObject_Init()
#include "pycore_pymath.h" // _Py_ADJUST_ERANGE2()
Expand Down Expand Up @@ -410,16 +410,32 @@ complex_subtype_from_c_complex(PyTypeObject *type, Py_complex cval)
PyObject *
PyComplex_FromCComplex(Py_complex cval)
{
/* Inline PyObject_New */
PyComplexObject *op = PyObject_Malloc(sizeof(PyComplexObject));
PyComplexObject *op = _Py_FREELIST_POP(PyComplexObject, complexes);

if (op == NULL) {
return PyErr_NoMemory();
/* Inline PyObject_New */
op = PyObject_Malloc(sizeof(PyComplexObject));
if (op == NULL) {
return PyErr_NoMemory();
}
_PyObject_Init((PyObject*)op, &PyComplex_Type);
}
_PyObject_Init((PyObject*)op, &PyComplex_Type);
op->cval = cval;
return (PyObject *) op;
}

static void
complex_dealloc(PyObject *op)
{
assert(PyComplex_Check(op));
if (PyComplex_CheckExact(op)) {
_Py_FREELIST_FREE(complexes, op, PyObject_Free);
}
else {
Py_TYPE(op)->tp_free(op);
}
}

static PyObject *
complex_subtype_from_doubles(PyTypeObject *type, double real, double imag)
{
Expand Down Expand Up @@ -1383,7 +1399,7 @@ PyTypeObject PyComplex_Type = {
"complex",
sizeof(PyComplexObject),
0,
0, /* tp_dealloc */
complex_dealloc, /* tp_dealloc */
0, /* tp_vectorcall_offset */
0, /* tp_getattr */
0, /* tp_setattr */
Expand Down
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