Launch the rotation thread using lttng_thread
[lttng-tools.git] / src / bin / lttng-sessiond / rotation-thread.h
index 41da6e0444e209855fe14d7986834e9dd1979c99..b83745786b977528181993f9b7591f8f593a514f 100644 (file)
@@ -1,5 +1,6 @@
 /*
  * 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
 #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 */
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