Fix a bug where we tried to send events out when no sessions container was present.

This commit stops a warning message (user_data is NULL) from getting output when
manager events get sent before manager is initialized. This happens because manager
is initialized *after* modules are loaded and the act of loading modules triggers
manager events.

(issue #14974)
Reported by: pj

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@190586 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/manager.c b/main/manager.c
index 09e3c76..a43f551 100644 (file)
--- a/main/manager.c
+++ b/main/manager.c
@@ -3511,7 +3511,6 @@ int __manager_event(int category, const char *event,
        va_list ap;
        struct timeval now;
        struct ast_str *buf;
-       struct ao2_iterator i;
 
        if (!(buf = ast_str_thread_get(&manager_event_buf, MANAGER_EVENT_BUF_INITSIZE))) {
                return -1;
@@ -3546,21 +3545,24 @@ int __manager_event(int category, const char *event,
        append_event(ast_str_buffer(buf), category);
 
        /* Wake up any sleeping sessions */
-       i = ao2_iterator_init(sessions, 0);
-       while ((session = ao2_iterator_next(&i))) {
-               ao2_lock(session);
-               if (session->waiting_thread != AST_PTHREADT_NULL) {
-                       pthread_kill(session->waiting_thread, SIGURG);
-               } else {
-                       /* We have an event to process, but the mansession is
-                        * not waiting for it. We still need to indicate that there
-                        * is an event waiting so that get_input processes the pending
-                        * event instead of polling.
-                        */
-                       session->pending_event = 1;
+       if (sessions) {
+               struct ao2_iterator i;
+               i = ao2_iterator_init(sessions, 0);
+               while ((session = ao2_iterator_next(&i))) {
+                       ao2_lock(session);
+                       if (session->waiting_thread != AST_PTHREADT_NULL) {
+                               pthread_kill(session->waiting_thread, SIGURG);
+                       } else {
+                               /* We have an event to process, but the mansession is
+                                * not waiting for it. We still need to indicate that there
+                                * is an event waiting so that get_input processes the pending
+                                * event instead of polling.
+                                */
+                               session->pending_event = 1;
+                       }
+                       ao2_unlock(session);
+                       unref_mansession(session);
                }
-               ao2_unlock(session);
-               unref_mansession(session);
        }
 
        AST_RWLIST_RDLOCK(&manager_hooks);