+ return ret;
+}
+
+/*
+ * Destroy a agent application by socket.
+ */
+void agent_destroy_app_by_sock(int sock)
+{
+ struct agent_app *app;
+
+ assert(sock >= 0);
+
+ /*
+ * Not finding an application is a very important error that should NEVER
+ * happen. The hash table deletion is ONLY done through this call when the
+ * main sessiond thread is torn down.
+ */
+ rcu_read_lock();
+ app = agent_find_app_by_sock(sock);
+ assert(app);
+
+ /* RCU read side lock is assumed to be held by this function. */
+ agent_delete_app(app);
+
+ /* The application is freed in a RCU call but the socket is closed here. */
+ agent_destroy_app(app);
+ rcu_read_unlock();
+}
+
+/*
+ * Clean-up the agent app hash table and destroy it.
+ */
+void agent_app_ht_clean(void)
+{
+ struct lttng_ht_node_ulong *node;
+ struct lttng_ht_iter iter;
+
+ if (!agent_apps_ht_by_sock) {
+ return;
+ }
+ rcu_read_lock();
+ cds_lfht_for_each_entry(agent_apps_ht_by_sock->ht, &iter.iter, node, node) {
+ struct agent_app *app;
+
+ app = caa_container_of(node, struct agent_app, node);
+ agent_destroy_app_by_sock(app->sock->fd);
+ }
+ rcu_read_unlock();
+
+ lttng_ht_destroy(agent_apps_ht_by_sock);