2 * Copyright (C) 2017 - Julien Desfossez <jdesfossez@efficios.com>
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License, version 2 only, as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 51
15 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 #ifndef ROTATION_THREAD_H
19 #define ROTATION_THREAD_H
21 #include <urcu/list.h>
23 #include <urcu/rculfhash.h>
24 #include <lttng/domain.h>
25 #include <common/pipe.h>
26 #include <common/compat/poll.h>
27 #include <common/hashtable/hashtable.h>
30 struct rotation_channel_key
{
32 enum lttng_domain_type domain
;
35 struct rotation_channel_info
{
37 struct ltt_kernel_channel
*kchan
;
38 struct ltt_ust_channel
*uchan
;
40 struct ltt_session
*session
;
41 struct rotation_channel_key channel_key
;
42 struct cds_lfht_node rotate_channels_ht_node
;
45 struct rotation_thread_handle
{
47 * Read side of pipes used to receive channel status info collected
48 * by the various consumer daemons.
56 struct rotation_thread_state
{
57 struct lttng_poll_event events
;
60 /* rotation_thread_data takes ownership of the channel rotate pipes. */
61 struct rotation_thread_handle
*rotation_thread_handle_create(
62 struct lttng_pipe
*ust32_channel_rotate_pipe
,
63 struct lttng_pipe
*ust64_channel_rotate_pipe
,
64 struct lttng_pipe
*kernel_channel_rotate_pipe
,
65 int thread_quit_pipe
);
67 void rotation_thread_handle_destroy(
68 struct rotation_thread_handle
*handle
);
70 void rotation_thread_quit(struct rotation_thread_handle
*handle
);
72 int rotate_add_channel_pending(uint64_t key
, enum lttng_domain_type domain
,
73 struct ltt_session
*session
);
75 void *thread_rotation(void *data
);
77 #endif /* ROTATION_THREAD_H */