[PATCH 2 of 3] osutil: use PyLongObject on Python 3 for listdir_slot

[Gregory Szorc]

# HG changeset patch
# User Gregory Szorc <gregory.szorc at gmail.com>
# Date 1476013666 -7200
#      Sun Oct 09 13:47:46 2016 +0200
# Node ID 6bdfe20ea811ac7e873072763d43f29c23edc409
# Parent  0cc68ebd34108cc609328379b46522b81f840851
osutil: use PyLongObject on Python 3 for listdir_slot

This code looks performance sensitive. So let's retain PyIntObject on
Python 2 and use PyLongObject explicitly on Python 3.

diff --git a/mercurial/osutil.c b/mercurial/osutil.c
--- a/mercurial/osutil.c
+++ b/mercurial/osutil.c
@@ -62,13 +62,21 @@ struct listdir_stat {
 	struct stat st;
 };
 #endif
 
+#ifdef IS_PY3K
+#define listdir_slot(name) \
+	static PyObject *listdir_stat_##name(PyObject *self, void *x) \
+	{ \
+		return PyLong_FromLong(((struct listdir_stat *)self)->st.name); \
+	}
+#else
 #define listdir_slot(name) \
 	static PyObject *listdir_stat_##name(PyObject *self, void *x) \
 	{ \
 		return PyInt_FromLong(((struct listdir_stat *)self)->st.name); \
 	}
+#endif
 
 listdir_slot(st_dev)
 listdir_slot(st_mode)
 listdir_slot(st_nlink)