Cleanup dnsmgr on exit.

* Cleanup dnsmgr thread and CLI commands on exit.

(issue ASTERISK-20649)
Reported by: Corey Farrell
Patches:
      dnsmgr-cleanup-1_8.patch (license #5909) patch uploaded by Corey Farrell
      dnsmgr-cleanup-10-11-trunk.patch (license #5909) patch uploaded by Corey Farrell
      Modified
........

Merged revisions 377704 from http://svn.asterisk.org/svn/asterisk/branches/1.8

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10@377705 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/dnsmgr.c b/main/dnsmgr.c
index 7d4246f60f63df49ef35314a8a33194efa324943..fda7bd91d5207790cdea482a2ca6a37c3555b6b2 100644 (file)
--- a/main/dnsmgr.c
+++ b/main/dnsmgr.c
@@ -394,6 +394,26 @@ static struct ast_cli_entry cli_reload = AST_CLI_DEFINE(handle_cli_reload, "Relo
 static struct ast_cli_entry cli_refresh = AST_CLI_DEFINE(handle_cli_refresh, "Performs an immediate refresh");
 static struct ast_cli_entry cli_status = AST_CLI_DEFINE(handle_cli_status, "Display the DNS manager status");
 
+static void dnsmgr_shutdown(void)
+{
+       ast_cli_unregister(&cli_reload);
+       ast_cli_unregister(&cli_status);
+       ast_cli_unregister(&cli_refresh);
+
+       /* Destroy refresh thread. */
+       ast_mutex_lock(&refresh_lock);
+       if (refresh_thread != AST_PTHREADT_NULL) {
+               /* wake up the thread so it will exit */
+               pthread_cancel(refresh_thread);
+               pthread_kill(refresh_thread, SIGURG);
+               pthread_join(refresh_thread, NULL);
+               refresh_thread = AST_PTHREADT_NULL;
+       }
+       ast_mutex_unlock(&refresh_lock);
+
+       ast_sched_context_destroy(sched);
+}
+
 int dnsmgr_init(void)
 {
        if (!(sched = ast_sched_context_create())) {
@@ -403,6 +423,9 @@ int dnsmgr_init(void)
        ast_cli_register(&cli_reload);
        ast_cli_register(&cli_status);
        ast_cli_register(&cli_refresh);
+
+       ast_register_atexit(dnsmgr_shutdown);
+
        return do_reload(1);
 }