From: Bryan Davis <bd808@wikimedia.org>
Date: Thu, 4 Dec 2014 01:48:44 +0000 (-0700)
Subject: xhprof: Guard against division by 0 when computing percentages
X-Git-Tag: 1.31.0-rc.0~13056^2
X-Git-Url: http://git.cyclocoop.org/%7B%24www_url%7Dadmin/compta/categories/modifier.php?a=commitdiff_plain;h=e222ba36285d5162447524291f2acafabfaacfcb;p=lhc%2Fweb%2Fwiklou.git

xhprof: Guard against division by 0 when computing percentages

Change-Id: Icce3b5be1136c541dc87c44b01a42709f19ca885
---

diff --git a/includes/libs/Xhprof.php b/includes/libs/Xhprof.php
index 990e2c3053..98ff675c89 100644
--- a/includes/libs/Xhprof.php
+++ b/includes/libs/Xhprof.php
@@ -267,13 +267,16 @@ class Xhprof {
 				foreach ( $stats as $name => $value ) {
 					if ( $value instanceof RunningStat ) {
 						$total = $value->m1 * $value->n;
+						$percent = ( isset( $main[$name] ) && $main[$name] )
+							? 100 * $total / $main[$name]
+							: 0;
 						$this->inclusive[$func][$name] = array(
 							'total' => $total,
 							'min' => $value->min,
 							'mean' => $value->m1,
 							'max' => $value->max,
 							'variance' => $value->m2,
-							'percent' => 100 * $total / $main[$name],
+							'percent' => $percent,
 						);
 					}
 				}