SoW-2019-0002: Dynamic Snapshot

[lttng-tools.git] / src / bin / lttng-sessiond / agent-thread.c

diff --git a/src/bin/lttng-sessiond/agent-thread.c b/src/bin/lttng-sessiond/agent-thread.c
index 575f6aee934a504ddb6248d4e87610d622d0959c..3587fd4713312a7f85d0c577adaadc6852cff418 100644 (file)
--- a/src/bin/lttng-sessiond/agent-thread.c
+++ b/src/bin/lttng-sessiond/agent-thread.c
@@ -1,18 +1,8 @@
 /*
- * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com>
+ * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License, version 2 only, as
- * published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #define _LGPL_SOURCE
@@ -59,6 +49,8 @@ static void update_agent_app(struct agent_app *app)
 {
        struct ltt_session *session, *stmp;
        struct ltt_session_list *list;
+       struct agent *trigger_agent;
+       struct lttng_ht_iter iter;
 
        list = session_get_list();
        assert(list);
@@ -84,6 +76,14 @@ static void update_agent_app(struct agent_app *app)
                session_put(session);
        }
        session_unlock_list();
+
+       /* Do we need more locking here? maybe against trigger add? */
+       rcu_read_lock();
+       cds_lfht_for_each_entry (trigger_agents_ht_by_domain->ht, &iter.iter,
+                       trigger_agent, node.node) {
+               agent_update(trigger_agent, app->sock->fd);
+       }
+       rcu_read_unlock();
 }
 
 /*