--- /dev/null
+/*
+ * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@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.
+ *
+ * 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.
+ */
+
+#ifndef NOTIFICATION_THREAD_H
+#define NOTIFICATION_THREAD_H
+
+#include <urcu/list.h>
+#include <urcu.h>
+#include <urcu/rculfhash.h>
+#include <lttng/trigger/trigger.h>
+#include <common/pipe.h>
+#include <common/compat/poll.h>
+#include <common/hashtable/hashtable.h>
+#include <pthread.h>
+
+struct notification_thread_handle {
+ /*
+ * Queue of struct notification command.
+ * event_fd must be WRITE(2) to signal that a new command
+ * has been enqueued.
+ */
+ struct {
+ int event_fd;
+ struct cds_list_head list;
+ pthread_mutex_t lock;
+ } cmd_queue;
+ /*
+ * Read side of pipes used to receive channel status info collected
+ * by the various consumer daemons.
+ */
+ struct {
+ int ust32_consumer;
+ int ust64_consumer;
+ int kernel_consumer;
+ } channel_monitoring_pipes;
+};
+
+struct notification_thread_state {
+ int notification_channel_socket;
+ struct lttng_poll_event events;
+ struct cds_lfht *client_socket_ht;
+ struct cds_lfht *channel_triggers_ht;
+ struct cds_lfht *channel_state_ht;
+ struct cds_lfht *notification_trigger_clients_ht;
+ struct cds_lfht *channels_ht;
+ struct cds_lfht *triggers_ht;
+};
+
+/* notification_thread_data takes ownership of the channel monitor pipes. */
+struct notification_thread_handle *notification_thread_handle_create(
+ struct lttng_pipe *ust32_channel_monitor_pipe,
+ struct lttng_pipe *ust64_channel_monitor_pipe,
+ struct lttng_pipe *kernel_channel_monitor_pipe);
+void notification_thread_handle_destroy(
+ struct notification_thread_handle *handle);
+
+void *thread_notification(void *data);
+
+#endif /* NOTIFICATION_THREAD_H */