Add kernel context support
[lttng-tools.git] / ltt-sessiond / trace.h
CommitLineData
fda89c9b
DG
1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#ifndef _LTT_TRACE_H
20#define _LTT_TRACE_H
21
9e78d6ae
DG
22#include <limits.h>
23#include <urcu/list.h>
d4a2a84a 24
f3ed775e
DG
25#include <lttng/lttng.h>
26
27#include "lttng-kernel.h"
54012638 28
20fe2104
DG
29/* Kernel event list */
30struct ltt_kernel_event_list {
31 struct cds_list_head head;
32};
33
8c0faa1d
DG
34/* Channel stream list */
35struct ltt_kernel_stream_list {
36 struct cds_list_head head;
37};
38
39/* Channel list */
40struct ltt_kernel_channel_list {
41 struct cds_list_head head;
42};
43
20fe2104
DG
44/* Kernel event */
45struct ltt_kernel_event {
20fe2104 46 int fd;
e953ef25 47 int enabled;
d65106b1 48 struct lttng_kernel_context *ctx;
f34daff7 49 struct lttng_kernel_event *event;
20fe2104
DG
50 struct cds_list_head list;
51};
52
53/* Kernel channel */
54struct ltt_kernel_channel {
55 int fd;
d36b8583 56 int enabled;
8c0faa1d
DG
57 char *pathname;
58 unsigned int stream_count;
d65106b1 59 struct lttng_kernel_context *ctx;
f3ed775e 60 struct lttng_channel *channel;
20fe2104 61 struct ltt_kernel_event_list events_list;
8c0faa1d
DG
62 struct ltt_kernel_stream_list stream_list;
63 struct cds_list_head list;
20fe2104
DG
64};
65
aaf26714
DG
66/* Metadata */
67struct ltt_kernel_metadata {
68 int fd;
8c0faa1d 69 char *pathname;
f3ed775e 70 struct lttng_channel *conf;
aaf26714
DG
71};
72
8c0faa1d
DG
73/* Channel stream */
74struct ltt_kernel_stream {
75 int fd;
76 char *pathname;
77 int state;
78 struct cds_list_head list;
79};
80
20fe2104
DG
81/* Kernel session */
82struct ltt_kernel_session {
83 int fd;
8c0faa1d 84 int metadata_stream_fd;
f3ed775e 85 int kconsumer_fds_sent;
8c0faa1d
DG
86 unsigned int channel_count;
87 unsigned int stream_count_global;
aaf26714 88 struct ltt_kernel_metadata *metadata;
8c0faa1d 89 struct ltt_kernel_channel_list channel_list;
fda89c9b
DG
90};
91
92/* UST trace representation */
93struct ltt_ust_trace {
94 struct cds_list_head list;
1657e9bb 95 char name[NAME_MAX];
fda89c9b
DG
96 int shmid;
97 pid_t pid;
98 struct cds_list_head markers;
99};
100
101struct ltt_ust_marker {
102 struct cds_list_head list;
103 char *name;
104 char *channel;
105};
106
19e70852
DG
107/*
108 * Get functions.
109 */
110struct ltt_kernel_event *get_kernel_event_by_name(
111 char *name, struct ltt_kernel_channel *channel);
112struct ltt_kernel_channel *get_kernel_channel_by_name(
113 char *name, struct ltt_kernel_session *session);
114
54012638 115/*
c363b55d 116 * Create functions malloc() the data structure.
54012638 117 */
54012638 118struct ltt_kernel_session *trace_create_kernel_session(void);
f3ed775e
DG
119struct ltt_kernel_channel *trace_create_kernel_channel(struct lttng_channel *chan);
120struct ltt_kernel_event *trace_create_kernel_event(struct lttng_event *ev);
54012638 121struct ltt_kernel_metadata *trace_create_kernel_metadata(void);
54012638
DG
122struct ltt_kernel_stream *trace_create_kernel_stream(void);
123
c363b55d
DG
124/*
125 * Destroy functions free() the data structure and remove from linked list if
126 * it's applies.
127 */
128void trace_destroy_kernel_session(struct ltt_kernel_session *session);
129void trace_destroy_kernel_metadata(struct ltt_kernel_metadata *metadata);
130void trace_destroy_kernel_channel(struct ltt_kernel_channel *channel);
131void trace_destroy_kernel_event(struct ltt_kernel_event *event);
132void trace_destroy_kernel_stream(struct ltt_kernel_stream *stream);
133
fda89c9b 134#endif /* _LTT_TRACE_H */
This page took 0.029315 seconds and 4 git commands to generate.