From: Guido van Rossum <guido@python.org>
Date: Mon, 19 Aug 2002 16:50:48 +0000 (+0000)
Subject: Inline call to _PyObject_GetDictPtr() in PyObject_GenericGetAttr().
X-Git-Tag: v2.3c1~4405
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c66ff4441e7c4806ff9a73a42ab9229a1988b8df;p=python

Inline call to _PyObject_GetDictPtr() in PyObject_GenericGetAttr().
This causes a modest speedup.
---

diff --git a/Objects/object.c b/Objects/object.c
index 70ff3eda04..5120eb52f6 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -1292,6 +1292,7 @@ PyObject_GenericGetAttr(PyObject *obj, PyObject *name)
 	PyObject *descr;
 	PyObject *res = NULL;
 	descrgetfunc f;
+	long dictoffset;
 	PyObject **dictptr;
 
 	if (!PyString_Check(name)){
@@ -1330,9 +1331,25 @@ PyObject_GenericGetAttr(PyObject *obj, PyObject *name)
 		}
 	}
 
-	dictptr = _PyObject_GetDictPtr(obj);
-	if (dictptr != NULL) {
-		PyObject *dict = *dictptr;
+	/* Inline _PyObject_GetDictPtr */
+	dictoffset = tp->tp_dictoffset;
+	if (dictoffset != 0) {
+		PyObject *dict;
+		if (dictoffset < 0) {
+			int tsize;
+			size_t size;
+
+			tsize = ((PyVarObject *)obj)->ob_size;
+			if (tsize < 0)
+				tsize = -tsize;
+			size = _PyObject_VAR_SIZE(tp, tsize);
+
+			dictoffset += (long)size;
+			assert(dictoffset > 0);
+			assert(dictoffset % SIZEOF_VOID_P == 0);
+		}
+		dictptr = (PyObject **) ((char *)obj + dictoffset);
+		dict = *dictptr;
 		if (dict != NULL) {
 			res = PyDict_GetItem(dict, name);
 			if (res != NULL) {