From 47ba005d0d29be601ac3b8a7377f6979afd28b5c Mon Sep 17 00:00:00 2001
From: skodak <skodak>
Date: Sun, 26 Aug 2007 07:58:20 +0000
Subject: [PATCH] MDL-10995 course parents cache size now limited

---
 lib/accesslib.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/accesslib.php b/lib/accesslib.php
index fc2438170c..cbf0d75118 100755
--- a/lib/accesslib.php
+++ b/lib/accesslib.php
@@ -311,6 +311,11 @@ function get_parent_cats($context) {
             if (array_key_exists($context->instanceid, $courseparents)) {
                 return $courseparents[$context->instanceid];
             }
+
+            if (count($courseparents) > 1000) {
+                $courseparents = array();   // max cache size when looping through thousands of courses
+            }
+
             if ($context->instanceid == SITEID) {
                 return $courseparents[$context->instanceid] = array(); // frontpage course does not have parent cats
             }
-- 
2.39.5