mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-09-26 18:29:57 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

Limit free list of method and builtin function objects to 256 entries each.

Browse source
This commit is contained in:
Christian Heimes 2008-02-06 12:44:34 +00:00
parent 45eda64691
commit 6075a82243
3 changed files with 38 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

20
Objects/methodobject.c
View file

@ -4,7 +4,12 @@
#include "Python.h"
#include "structmember.h"
/* Free list for method objects to safe malloc/free overhead
* The m_self element is used to chain the objects.
*/
static PyCFunctionObject *free_list = NULL;
static int numfree = 0;
#define MAXFREELIST 256
PyObject *
PyCFunction_NewEx(PyMethodDef *ml, PyObject *self, PyObject *module)
@ -14,6 +19,7 @@ PyCFunction_NewEx(PyMethodDef *ml, PyObject *self, PyObject *module)
if (op != NULL) {
free_list = (PyCFunctionObject *)(op->m_self);
PyObject_INIT(op, &PyCFunction_Type);
numfree--;
}
else {
op = PyObject_GC_New(PyCFunctionObject, &PyCFunction_Type);
@ -125,8 +131,14 @@ meth_dealloc(PyCFunctionObject *m)
_PyObject_GC_UNTRACK(m);
Py_XDECREF(m->m_self);
Py_XDECREF(m->m_module);
m->m_self = (PyObject *)free_list;
free_list = m;
if (numfree < MAXFREELIST) {
m->m_self = (PyObject *)free_list;
free_list = m;
numfree++;
}
else {
PyObject_GC_Del(m);
}
}
static PyObject *
@ -346,14 +358,16 @@ PyCFunction_Fini(void)
PyCFunctionObject *v = free_list;
free_list = (PyCFunctionObject *)(v->m_self);
PyObject_GC_Del(v);
numfree--;
}
assert(numfree == 0);
}
/* PyCFunction_New() is now just a macro that calls PyCFunction_NewEx(),
but it's part of the API so we need to keep a function around that
existing C extensions can call.
*/
#undef PyCFunction_New
PyAPI_FUNC(PyObject *) PyCFunction_New(PyMethodDef *, PyObject *);