Register a function to unset certain globals after requests finish processing to release memory early

1 files changed, 24 insertions, 0 deletions

diff --git a/etc/inc/config.lib.inc b/etc/inc/config.lib.inc
index 0588252..8d80e98 100644
--- a/etc/inc/config.lib.inc
+++ b/etc/inc/config.lib.inc
@@ -909,4 +909,28 @@ function make_config_revision_entry($desc = null, $override_user = null) {
 	return $revision;
 }
 
+function pfSense_clear_globals() {
+	global $config, $FilterIfList, $GatewaysList, $filterdns, $aliases, $aliastable;
+
+	if (isset($FilterIfList))
+		unset($FilterIfList);
+
+	if (isset($GatewaysList))
+		unset($GatewaysList);
+
+	/* Used for the hostname dns resolver */
+	if (isset($filterdns))
+		unset($filterdns);
+
+	/* Used for aliases and interface macros */
+	if (isset($aliases))
+		unset($aliases);
+	if (isset($aliastable))
+		unset($aliastable);
+
+	unset($config);
+}
+
+register_shutdown_function('pfSense_clear_globals');
+
 ?>