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.
21 #include "rotation-thread.h"
24 * Key in channel_pending_rotate_ht to map a channel to a
25 * struct rotation_channel_info.
27 struct rotation_channel_key
{
29 enum lttng_domain_type domain
;
33 * Added in channel_pending_rotate_ht everytime we start the rotation of a
34 * channel. The consumer notifies the rotation thread with the channel_key to
35 * inform a rotation is complete, we use that information to lookup the related
36 * session from channel_pending_rotate_ht.
38 struct rotation_channel_info
{
40 struct rotation_channel_key channel_key
;
41 struct cds_lfht_node rotate_channels_ht_node
;
44 extern struct cds_lfht
*channel_pending_rotate_ht
;
46 unsigned long hash_channel_key(struct rotation_channel_key
*key
);
48 /* session lock must be held by this function's caller. */
49 int rename_complete_chunk(struct ltt_session
*session
, time_t ts
);
51 int relay_rotate_pending(struct ltt_session
*session
, uint64_t chunk_id
);
54 * When we start the rotation of a channel, we add its information in
55 * channel_pending_rotate_ht. This is called in the context of
56 * thread_manage_client when the client asks for a rotation, in the context
57 * of the sessiond_timer thread when periodic rotations are enabled and from
58 * the rotation_thread when size-based rotations are enabled.
60 int rotate_add_channel_pending(uint64_t key
, enum lttng_domain_type domain
,
61 struct ltt_session
*session
);