[pypy-commit] pypy default: (sbehnel) cpyext: Inline the fast path of Py_INCREF and Py_DECREF,

[amauryfa]

Author: Amaury Forgeot d'Arc <amauryfa at gmail.com>
Branch: 
Changeset: r54699:0feb5408579b
Date: 2012-04-23 23:56 +0200
http://bitbucket.org/pypy/pypy/changeset/0feb5408579b/

Log:	(sbehnel) cpyext: Inline the fast path of Py_INCREF and Py_DECREF,
	to avoid costly function calls.

diff --git a/pypy/module/cpyext/include/object.h b/pypy/module/cpyext/include/object.h
--- a/pypy/module/cpyext/include/object.h
+++ b/pypy/module/cpyext/include/object.h
@@ -38,10 +38,19 @@
 	PyObject_VAR_HEAD
 } PyVarObject;
 
+#ifndef PYPY_DEBUG_REFCOUNT
 #define Py_INCREF(ob)   (Py_IncRef((PyObject *)ob))
 #define Py_DECREF(ob)   (Py_DecRef((PyObject *)ob))
 #define Py_XINCREF(ob)  (Py_IncRef((PyObject *)ob))
 #define Py_XDECREF(ob)  (Py_DecRef((PyObject *)ob))
+#else
+#define Py_INCREF(ob)   (((PyObject *)ob)->ob_refcnt++)
+#define Py_DECREF(ob)  ((((PyObject *)ob)->ob_refcnt > 1) ? \
+			((PyObject *)ob)->ob_refcnt-- : (Py_DecRef((PyObject *)ob)))
+
+#define Py_XINCREF(op) do { if ((op) == NULL) ; else Py_INCREF(op); } while (0)
+#define Py_XDECREF(op) do { if ((op) == NULL) ; else Py_DECREF(op); } while (0)
+#endif
 
 #define Py_CLEAR(op)				\
         do {                            	\