/*
- * Copyright (C) 2017 - Julien Desfossez <jdesfossez@efficios.com>
+ * Copyright (C) 2017 Julien Desfossez <jdesfossez@efficios.com>
+ * Copyright (C) 2018 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.
+ * 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.
*/
#ifndef ROTATION_THREAD_H
#include <pthread.h>
#include <semaphore.h>
#include "session.h"
+#include "notification-thread.h"
-/*
- * The timer thread enqueues struct sessiond_rotation_timer objects in the list
- * and wake up the rotation thread. When the rotation thread wakes up, it
- * empties the queue.
- */
-struct rotation_thread_timer_queue {
- struct lttng_pipe *event_pipe;
- struct cds_list_head list;
- pthread_mutex_t lock;
-};
-
-struct rotation_thread_handle {
- /*
- * Read side of pipes used to communicate with the rotation thread.
- */
- /* Notification from the consumers */
- int ust32_consumer;
- int ust64_consumer;
- int kernel_consumer;
- /* quit pipe */
- int thread_quit_pipe;
+extern struct lttng_notification_channel *rotate_notification_channel;
- struct rotation_thread_timer_queue *rotation_timer_queue;
+enum rotation_thread_job_type {
+ ROTATION_THREAD_JOB_TYPE_SCHEDULED_ROTATION,
+ ROTATION_THREAD_JOB_TYPE_CHECK_PENDING_ROTATION
+};
- /* Access to the notification thread cmd_queue */
- struct notification_thread_handle *notification_thread_handle;
+struct rotation_thread_timer_queue;
+struct rotation_thread_handle;
- sem_t *notification_thread_ready;
-};
+struct rotation_thread_timer_queue *rotation_thread_timer_queue_create(void);
+void rotation_thread_timer_queue_destroy(
+ struct rotation_thread_timer_queue *queue);
struct rotation_thread_handle *rotation_thread_handle_create(
- struct lttng_pipe *ust32_channel_rotate_pipe,
- struct lttng_pipe *ust64_channel_rotate_pipe,
- struct lttng_pipe *kernel_channel_rotate_pipe,
- int thread_quit_pipe,
struct rotation_thread_timer_queue *rotation_timer_queue,
- struct notification_thread_handle *notification_thread_handle,
- sem_t *notification_thread_ready);
+ struct notification_thread_handle *notification_thread_handle);
void rotation_thread_handle_destroy(
struct rotation_thread_handle *handle);
-void *thread_rotation(void *data);
+void rotation_thread_enqueue_job(struct rotation_thread_timer_queue *queue,
+ enum rotation_thread_job_type job_type,
+ struct ltt_session *session);
+
+bool launch_rotation_thread(struct rotation_thread_handle *handle);
#endif /* ROTATION_THREAD_H */