Commit | Line | Data |
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fda89c9b DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
d14d33bf AM |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
fda89c9b DG |
7 | * |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
d14d33bf AM |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
fda89c9b DG |
16 | */ |
17 | ||
62499ad6 DG |
18 | #ifndef _LTT_TRACE_KERNEL_H |
19 | #define _LTT_TRACE_KERNEL_H | |
fda89c9b | 20 | |
9e78d6ae DG |
21 | #include <limits.h> |
22 | #include <urcu/list.h> | |
d4a2a84a | 23 | |
f3ed775e | 24 | #include <lttng/lttng.h> |
10a8a223 | 25 | #include <common/lttng-kernel.h> |
54012638 | 26 | |
20fe2104 DG |
27 | /* Kernel event list */ |
28 | struct ltt_kernel_event_list { | |
29 | struct cds_list_head head; | |
30 | }; | |
31 | ||
8c0faa1d DG |
32 | /* Channel stream list */ |
33 | struct ltt_kernel_stream_list { | |
34 | struct cds_list_head head; | |
35 | }; | |
36 | ||
37 | /* Channel list */ | |
38 | struct ltt_kernel_channel_list { | |
39 | struct cds_list_head head; | |
40 | }; | |
41 | ||
20fe2104 DG |
42 | /* Kernel event */ |
43 | struct ltt_kernel_event { | |
20fe2104 | 44 | int fd; |
e953ef25 | 45 | int enabled; |
2bdd86d4 MD |
46 | /* |
47 | * TODO: need internal representation to support more than a | |
48 | * single context. | |
49 | */ | |
d65106b1 | 50 | struct lttng_kernel_context *ctx; |
f34daff7 | 51 | struct lttng_kernel_event *event; |
20fe2104 DG |
52 | struct cds_list_head list; |
53 | }; | |
54 | ||
55 | /* Kernel channel */ | |
56 | struct ltt_kernel_channel { | |
57 | int fd; | |
d36b8583 | 58 | int enabled; |
8c0faa1d DG |
59 | char *pathname; |
60 | unsigned int stream_count; | |
cbbbb275 | 61 | unsigned int event_count; |
2bdd86d4 MD |
62 | /* |
63 | * TODO: need internal representation to support more than a | |
64 | * single context. | |
65 | */ | |
d65106b1 | 66 | struct lttng_kernel_context *ctx; |
f3ed775e | 67 | struct lttng_channel *channel; |
20fe2104 | 68 | struct ltt_kernel_event_list events_list; |
8c0faa1d DG |
69 | struct ltt_kernel_stream_list stream_list; |
70 | struct cds_list_head list; | |
20fe2104 DG |
71 | }; |
72 | ||
aaf26714 DG |
73 | /* Metadata */ |
74 | struct ltt_kernel_metadata { | |
75 | int fd; | |
8c0faa1d | 76 | char *pathname; |
f3ed775e | 77 | struct lttng_channel *conf; |
aaf26714 DG |
78 | }; |
79 | ||
8c0faa1d DG |
80 | /* Channel stream */ |
81 | struct ltt_kernel_stream { | |
82 | int fd; | |
83 | char *pathname; | |
84 | int state; | |
85 | struct cds_list_head list; | |
86 | }; | |
87 | ||
20fe2104 DG |
88 | /* Kernel session */ |
89 | struct ltt_kernel_session { | |
90 | int fd; | |
8c0faa1d | 91 | int metadata_stream_fd; |
3bd1e081 | 92 | int consumer_fds_sent; |
d9800920 | 93 | int consumer_fd; |
8c0faa1d DG |
94 | unsigned int channel_count; |
95 | unsigned int stream_count_global; | |
63053e7c | 96 | char *trace_path; |
aaf26714 | 97 | struct ltt_kernel_metadata *metadata; |
8c0faa1d | 98 | struct ltt_kernel_channel_list channel_list; |
6df2e2c9 MD |
99 | /* UID/GID of the user owning the session */ |
100 | uid_t uid; | |
101 | gid_t gid; | |
fda89c9b DG |
102 | }; |
103 | ||
62499ad6 DG |
104 | /* |
105 | * Lookup functions. NULL is returned if not found. | |
106 | */ | |
107 | struct ltt_kernel_event *trace_kernel_get_event_by_name( | |
19e70852 | 108 | char *name, struct ltt_kernel_channel *channel); |
62499ad6 | 109 | struct ltt_kernel_channel *trace_kernel_get_channel_by_name( |
19e70852 DG |
110 | char *name, struct ltt_kernel_session *session); |
111 | ||
54012638 | 112 | /* |
c363b55d | 113 | * Create functions malloc() the data structure. |
54012638 | 114 | */ |
f9815039 | 115 | struct ltt_kernel_session *trace_kernel_create_session(char *path); |
62499ad6 DG |
116 | struct ltt_kernel_channel *trace_kernel_create_channel(struct lttng_channel *chan, char *path); |
117 | struct ltt_kernel_event *trace_kernel_create_event(struct lttng_event *ev); | |
118 | struct ltt_kernel_metadata *trace_kernel_create_metadata(char *path); | |
119 | struct ltt_kernel_stream *trace_kernel_create_stream(void); | |
54012638 | 120 | |
c363b55d DG |
121 | /* |
122 | * Destroy functions free() the data structure and remove from linked list if | |
123 | * it's applies. | |
124 | */ | |
62499ad6 DG |
125 | void trace_kernel_destroy_session(struct ltt_kernel_session *session); |
126 | void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); | |
127 | void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); | |
128 | void trace_kernel_destroy_event(struct ltt_kernel_event *event); | |
129 | void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); | |
c363b55d | 130 | |
62499ad6 | 131 | #endif /* _LTT_TRACE_KERNEL_H */ |