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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 | |
82a3637f DG |
6 | * as published by the Free Software Foundation; only version 2 |
7 | * of the License. | |
fda89c9b DG |
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 | ||
62499ad6 DG |
19 | #ifndef _LTT_TRACE_KERNEL_H |
20 | #define _LTT_TRACE_KERNEL_H | |
fda89c9b | 21 | |
9e78d6ae DG |
22 | #include <limits.h> |
23 | #include <urcu/list.h> | |
d4a2a84a | 24 | |
f3ed775e | 25 | #include <lttng/lttng.h> |
10a8a223 | 26 | #include <common/lttng-kernel.h> |
54012638 | 27 | |
20fe2104 DG |
28 | /* Kernel event list */ |
29 | struct ltt_kernel_event_list { | |
30 | struct cds_list_head head; | |
31 | }; | |
32 | ||
8c0faa1d DG |
33 | /* Channel stream list */ |
34 | struct ltt_kernel_stream_list { | |
35 | struct cds_list_head head; | |
36 | }; | |
37 | ||
38 | /* Channel list */ | |
39 | struct ltt_kernel_channel_list { | |
40 | struct cds_list_head head; | |
41 | }; | |
42 | ||
20fe2104 DG |
43 | /* Kernel event */ |
44 | struct ltt_kernel_event { | |
20fe2104 | 45 | int fd; |
e953ef25 | 46 | int enabled; |
2bdd86d4 MD |
47 | /* |
48 | * TODO: need internal representation to support more than a | |
49 | * single context. | |
50 | */ | |
d65106b1 | 51 | struct lttng_kernel_context *ctx; |
f34daff7 | 52 | struct lttng_kernel_event *event; |
20fe2104 DG |
53 | struct cds_list_head list; |
54 | }; | |
55 | ||
56 | /* Kernel channel */ | |
57 | struct ltt_kernel_channel { | |
58 | int fd; | |
d36b8583 | 59 | int enabled; |
8c0faa1d DG |
60 | char *pathname; |
61 | unsigned int stream_count; | |
cbbbb275 | 62 | unsigned int event_count; |
2bdd86d4 MD |
63 | /* |
64 | * TODO: need internal representation to support more than a | |
65 | * single context. | |
66 | */ | |
d65106b1 | 67 | struct lttng_kernel_context *ctx; |
f3ed775e | 68 | struct lttng_channel *channel; |
20fe2104 | 69 | struct ltt_kernel_event_list events_list; |
8c0faa1d DG |
70 | struct ltt_kernel_stream_list stream_list; |
71 | struct cds_list_head list; | |
20fe2104 DG |
72 | }; |
73 | ||
aaf26714 DG |
74 | /* Metadata */ |
75 | struct ltt_kernel_metadata { | |
76 | int fd; | |
8c0faa1d | 77 | char *pathname; |
f3ed775e | 78 | struct lttng_channel *conf; |
aaf26714 DG |
79 | }; |
80 | ||
8c0faa1d DG |
81 | /* Channel stream */ |
82 | struct ltt_kernel_stream { | |
83 | int fd; | |
84 | char *pathname; | |
85 | int state; | |
86 | struct cds_list_head list; | |
87 | }; | |
88 | ||
20fe2104 DG |
89 | /* Kernel session */ |
90 | struct ltt_kernel_session { | |
91 | int fd; | |
8c0faa1d | 92 | int metadata_stream_fd; |
3bd1e081 | 93 | int consumer_fds_sent; |
d9800920 | 94 | int consumer_fd; |
8c0faa1d DG |
95 | unsigned int channel_count; |
96 | unsigned int stream_count_global; | |
63053e7c | 97 | char *trace_path; |
aaf26714 | 98 | struct ltt_kernel_metadata *metadata; |
8c0faa1d | 99 | struct ltt_kernel_channel_list channel_list; |
6df2e2c9 MD |
100 | /* UID/GID of the user owning the session */ |
101 | uid_t uid; | |
102 | gid_t gid; | |
fda89c9b DG |
103 | }; |
104 | ||
62499ad6 DG |
105 | /* |
106 | * Lookup functions. NULL is returned if not found. | |
107 | */ | |
108 | struct ltt_kernel_event *trace_kernel_get_event_by_name( | |
19e70852 | 109 | char *name, struct ltt_kernel_channel *channel); |
62499ad6 | 110 | struct ltt_kernel_channel *trace_kernel_get_channel_by_name( |
19e70852 DG |
111 | char *name, struct ltt_kernel_session *session); |
112 | ||
54012638 | 113 | /* |
c363b55d | 114 | * Create functions malloc() the data structure. |
54012638 | 115 | */ |
f9815039 | 116 | struct ltt_kernel_session *trace_kernel_create_session(char *path); |
62499ad6 DG |
117 | struct ltt_kernel_channel *trace_kernel_create_channel(struct lttng_channel *chan, char *path); |
118 | struct ltt_kernel_event *trace_kernel_create_event(struct lttng_event *ev); | |
119 | struct ltt_kernel_metadata *trace_kernel_create_metadata(char *path); | |
120 | struct ltt_kernel_stream *trace_kernel_create_stream(void); | |
54012638 | 121 | |
c363b55d DG |
122 | /* |
123 | * Destroy functions free() the data structure and remove from linked list if | |
124 | * it's applies. | |
125 | */ | |
62499ad6 DG |
126 | void trace_kernel_destroy_session(struct ltt_kernel_session *session); |
127 | void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); | |
128 | void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); | |
129 | void trace_kernel_destroy_event(struct ltt_kernel_event *event); | |
130 | void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); | |
c363b55d | 131 | |
62499ad6 | 132 | #endif /* _LTT_TRACE_KERNEL_H */ |