src/utils_cache.c: Improve a couple of comments.

diff --git a/src/utils_cache.c b/src/utils_cache.c
index 2e33ab0..b7eacf3 100644 (file)
--- a/src/utils_cache.c
+++ b/src/utils_cache.c
@@ -121,6 +121,7 @@ static void cache_free (cache_entry_t *ce)
   sfree (ce);
 } /* void cache_free */
 
+/* Send out notifications for "missing" values. */
 static int uc_send_notification (const char *name)
 {
   cache_entry_t *ce = NULL;
@@ -155,8 +156,9 @@ static int uc_send_notification (const char *name)
     return (-1);
   }
 
-  memset (&ds, '\0', sizeof (ds));
-  memset (&vl, '\0', sizeof (vl));
+  memset (&ds, 0, sizeof (ds));
+  memset (&vl, 0, sizeof (vl));
+
   sstrncpy (vl.host, host, sizeof (vl.host));
   sstrncpy (vl.plugin, plugin, sizeof (vl.plugin));
   if (plugin_instance != NULL)
@@ -166,7 +168,6 @@ static int uc_send_notification (const char *name)
   if (type_instance != NULL)
     sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 
-
   /* Copy the associative members */
   notification_init (&n, NOTIF_FAILURE, /* host = */ NULL,
       host, plugin, plugin_instance, type, type_instance);
@@ -192,7 +193,8 @@ static int uc_send_notification (const char *name)
     return (-1);
   }
     
-  /* Check if the entry has been updated in the meantime */
+  /* Check if the entry has been updated since we marked it as "missing" in
+   * uc_check_timeout() */
   if ((n.time - ce->last_update) < (2 * ce->interval))
   {
     ce->state = STATE_OKAY;