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 | 21 | #include <urcu/list.h> |
d4a2a84a | 22 | |
f3ed775e | 23 | #include <lttng/lttng.h> |
10a8a223 | 24 | #include <common/lttng-kernel.h> |
4dbc372b | 25 | #include <common/lttng-kernel-old.h> |
ce2a9e76 | 26 | #include <common/defaults.h> |
54012638 | 27 | |
00e2e675 DG |
28 | #include "consumer.h" |
29 | ||
20fe2104 DG |
30 | /* Kernel event list */ |
31 | struct ltt_kernel_event_list { | |
32 | struct cds_list_head head; | |
33 | }; | |
34 | ||
8c0faa1d DG |
35 | /* Channel stream list */ |
36 | struct ltt_kernel_stream_list { | |
37 | struct cds_list_head head; | |
38 | }; | |
39 | ||
40 | /* Channel list */ | |
41 | struct ltt_kernel_channel_list { | |
42 | struct cds_list_head head; | |
43 | }; | |
44 | ||
20fe2104 DG |
45 | /* Kernel event */ |
46 | struct ltt_kernel_event { | |
20fe2104 | 47 | int fd; |
e953ef25 | 48 | int enabled; |
2bdd86d4 MD |
49 | /* |
50 | * TODO: need internal representation to support more than a | |
51 | * single context. | |
52 | */ | |
d65106b1 | 53 | struct lttng_kernel_context *ctx; |
f34daff7 | 54 | struct lttng_kernel_event *event; |
20fe2104 DG |
55 | struct cds_list_head list; |
56 | }; | |
57 | ||
58 | /* Kernel channel */ | |
59 | struct ltt_kernel_channel { | |
60 | int fd; | |
d36b8583 | 61 | int enabled; |
8c0faa1d | 62 | unsigned int stream_count; |
cbbbb275 | 63 | unsigned int event_count; |
2bdd86d4 MD |
64 | /* |
65 | * TODO: need internal representation to support more than a | |
66 | * single context. | |
67 | */ | |
d65106b1 | 68 | struct lttng_kernel_context *ctx; |
f3ed775e | 69 | struct lttng_channel *channel; |
20fe2104 | 70 | struct ltt_kernel_event_list events_list; |
8c0faa1d DG |
71 | struct ltt_kernel_stream_list stream_list; |
72 | struct cds_list_head list; | |
20fe2104 DG |
73 | }; |
74 | ||
aaf26714 DG |
75 | /* Metadata */ |
76 | struct ltt_kernel_metadata { | |
77 | int fd; | |
f3ed775e | 78 | struct lttng_channel *conf; |
aaf26714 DG |
79 | }; |
80 | ||
8c0faa1d DG |
81 | /* Channel stream */ |
82 | struct ltt_kernel_stream { | |
83 | int fd; | |
8c0faa1d | 84 | int state; |
00e2e675 | 85 | /* Format is %s_%d respectively channel name and CPU number. */ |
ce2a9e76 | 86 | char name[DEFAULT_STREAM_NAME_LEN]; |
8c0faa1d DG |
87 | struct cds_list_head list; |
88 | }; | |
89 | ||
20fe2104 DG |
90 | /* Kernel session */ |
91 | struct ltt_kernel_session { | |
92 | int fd; | |
8c0faa1d | 93 | int metadata_stream_fd; |
3bd1e081 | 94 | int consumer_fds_sent; |
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; | |
00e2e675 DG |
103 | /* |
104 | * Two consumer_output object are needed where one is needed for the | |
105 | * current output object and the second one is the temporary object used to | |
106 | * store URI being set by the lttng_set_consumer_uri call. Once | |
107 | * lttng_enable_consumer is called, the two pointers are swapped. | |
108 | */ | |
109 | struct consumer_output *consumer; | |
110 | struct consumer_output *tmp_consumer; | |
53632229 DG |
111 | /* Tracing session id */ |
112 | unsigned int id; | |
fda89c9b DG |
113 | }; |
114 | ||
62499ad6 DG |
115 | /* |
116 | * Lookup functions. NULL is returned if not found. | |
117 | */ | |
118 | struct ltt_kernel_event *trace_kernel_get_event_by_name( | |
19e70852 | 119 | char *name, struct ltt_kernel_channel *channel); |
62499ad6 | 120 | struct ltt_kernel_channel *trace_kernel_get_channel_by_name( |
19e70852 DG |
121 | char *name, struct ltt_kernel_session *session); |
122 | ||
54012638 | 123 | /* |
c363b55d | 124 | * Create functions malloc() the data structure. |
54012638 | 125 | */ |
f9815039 | 126 | struct ltt_kernel_session *trace_kernel_create_session(char *path); |
62499ad6 DG |
127 | struct ltt_kernel_channel *trace_kernel_create_channel(struct lttng_channel *chan, char *path); |
128 | struct ltt_kernel_event *trace_kernel_create_event(struct lttng_event *ev); | |
a4b92340 | 129 | struct ltt_kernel_metadata *trace_kernel_create_metadata(void); |
00e2e675 DG |
130 | struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, |
131 | unsigned int count); | |
54012638 | 132 | |
c363b55d DG |
133 | /* |
134 | * Destroy functions free() the data structure and remove from linked list if | |
135 | * it's applies. | |
136 | */ | |
62499ad6 DG |
137 | void trace_kernel_destroy_session(struct ltt_kernel_session *session); |
138 | void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); | |
139 | void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); | |
140 | void trace_kernel_destroy_event(struct ltt_kernel_event *event); | |
141 | void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); | |
c363b55d | 142 | |
62499ad6 | 143 | #endif /* _LTT_TRACE_KERNEL_H */ |