diff options
Diffstat (limited to 'Objects/methodobject.c')
| -rw-r--r-- | Objects/methodobject.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/Objects/methodobject.c b/Objects/methodobject.c index 73e0790..7a82d89 100644 --- a/Objects/methodobject.c +++ b/Objects/methodobject.c @@ -4,7 +4,14 @@ #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; +#ifndef PyCFunction_MAXFREELIST +#define PyCFunction_MAXFREELIST 256 +#endif PyObject * PyCFunction_NewEx(PyMethodDef *ml, PyObject *self, PyObject *module) @@ -14,6 +21,7 @@ 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); @@ -116,8 +124,14 @@ 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 < PyCFunction_MAXFREELIST) { + m->m_self = (PyObject *)free_list; + free_list = m; + numfree++; + } + else { + PyObject_GC_Del(m); + } } static PyObject * @@ -312,14 +326,16 @@ 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 *); |