Launch the client management thread using lttng_thread
[lttng-tools.git] / src / bin / lttng-sessiond / load-session-thread.c
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1/*
2 * Copyright (C) 2014 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
3 *
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.
7 *
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
11 * more details.
12 *
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.
16 */
17
18#define _LGPL_SOURCE
19#include <common/error.h>
20#include <common/config/session-config.h>
21
22#include "load-session-thread.h"
23#include "lttng-sessiond.h"
24
25/*
26 * Destroy the thread data previously created with the init function.
27 */
28void load_session_destroy_data(struct load_session_thread_data *data)
29{
30 if (!data) {
31 return;
32 }
33}
34
35/*
36 * Initialize the thread data. This MUST be called before the thread load
37 * session is created.
38 *
39 * Return 0 on success else a negative value. Note that the destroy function
40 * can be called with no or partially initialized data.
41 */
42int load_session_init_data(struct load_session_thread_data **data)
43{
44 struct load_session_thread_data *_data = NULL;
45
46 assert(data);
47
48 /*
49 * Allocate memory here since this function is called from the main thread
50 * can die *before* the end of the load session thread.
51 */
52 _data = zmalloc(sizeof(*_data));
53 if (!_data) {
54 PERROR("zmalloc load session info");
55 goto error;
56 }
57
58 *data = _data;
59 return 0;
60
61error:
62 free(_data);
63 return -1;
64}
65
66/*
67 * This thread loads session configurations once the session daemon is
68 * ready to process client messages.
69 */
70void *thread_load_session(void *data)
71{
72 int ret;
73 struct load_session_thread_data *info = data;
74
75 DBG("[load-session-thread] Load session");
76
77 /* Override existing session and autoload also. */
78 ret = config_load_session(info->path, NULL, 1, 1, NULL);
79 if (ret) {
80 ERR("Session load failed: %s", error_get_str(ret));
81 }
82
83 sessiond_signal_parents();
84 return NULL;
85}
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