commit 93c1749c828cf750fbcc850730b9f2a872e38325
author Andrew J. Schorr <ajschorr@alumni.princeton.edu> Sun Apr 15 19:17:24 2007 +0000
committer Andrew J. Schorr <ajschorr@alumni.princeton.edu> Sun Apr 15 19:17:24 2007 +0000
tree 05800e33ebd68d5e6a2629d20ba54ad4db0aaa7c
parent 6dfa827b7be871fc7301d4db04a99b509c9fd7aa

[bgpd] Minor performance improvement patch

2007-04-15 Sebastien Tandel <sebastien@tandel.be>

	* bgp_aspath.c: (aspath_as_add, aspath_segment_add) Minor performance
	  optimization: while loop should test one pointer instead of two.

bgpd/bgp_aspath.c

diff --git a/bgpd/bgp_aspath.c b/bgpd/bgp_aspath.c
index 327406f..1f522d7 100644
--- a/bgpd/bgp_aspath.c
+++ b/bgpd/bgp_aspath.c
@@ -1243,13 +1243,13 @@
 {
   struct assegment *seg = as->segments;
 
-  /* Last segment search procedure. */
-  while (seg && seg->next)
-    seg = seg->next;
-  
   if (!seg)
     return;
   
+  /* Last segment search procedure. */
+  while (seg->next)
+    seg = seg->next;
+
   assegment_append_asns (seg, &asno, 1);
 }
 
@@ -1260,13 +1260,14 @@
   struct assegment *seg = as->segments;
   struct assegment *new = assegment_new (type, 0);
 
-  while (seg && seg->next)
-    seg = seg->next;
-  
-  if (seg == NULL)
-    as->segments = new;
+  if (seg)
+    {
+      while (seg->next)
+	seg = seg->next;
+      seg->next = new;
+    }
   else
-    seg->next = new;
+    as->segments = new;
 }
 
 struct aspath *