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> |
54012638 | 26 | |
00e2e675 DG |
27 | #include "consumer.h" |
28 | ||
20fe2104 DG |
29 | /* Kernel event list */ |
30 | struct ltt_kernel_event_list { | |
31 | struct cds_list_head head; | |
32 | }; | |
33 | ||
8c0faa1d DG |
34 | /* Channel stream list */ |
35 | struct ltt_kernel_stream_list { | |
36 | struct cds_list_head head; | |
37 | }; | |
38 | ||
39 | /* Channel list */ | |
40 | struct ltt_kernel_channel_list { | |
41 | struct cds_list_head head; | |
42 | }; | |
43 | ||
20fe2104 DG |
44 | /* Kernel event */ |
45 | struct ltt_kernel_event { | |
20fe2104 | 46 | int fd; |
e953ef25 | 47 | int enabled; |
2bdd86d4 MD |
48 | /* |
49 | * TODO: need internal representation to support more than a | |
50 | * single context. | |
51 | */ | |
d65106b1 | 52 | struct lttng_kernel_context *ctx; |
f34daff7 | 53 | struct lttng_kernel_event *event; |
20fe2104 DG |
54 | struct cds_list_head list; |
55 | }; | |
56 | ||
57 | /* Kernel channel */ | |
58 | struct ltt_kernel_channel { | |
59 | int fd; | |
d36b8583 | 60 | int enabled; |
8c0faa1d | 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; | |
f3ed775e | 77 | struct lttng_channel *conf; |
aaf26714 DG |
78 | }; |
79 | ||
8c0faa1d DG |
80 | /* Channel stream */ |
81 | struct ltt_kernel_stream { | |
82 | int fd; | |
8c0faa1d | 83 | int state; |
00e2e675 DG |
84 | /* Format is %s_%d respectively channel name and CPU number. */ |
85 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
8c0faa1d DG |
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; |
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; | |
00e2e675 DG |
102 | /* |
103 | * Two consumer_output object are needed where one is needed for the | |
104 | * current output object and the second one is the temporary object used to | |
105 | * store URI being set by the lttng_set_consumer_uri call. Once | |
106 | * lttng_enable_consumer is called, the two pointers are swapped. | |
107 | */ | |
108 | struct consumer_output *consumer; | |
109 | struct consumer_output *tmp_consumer; | |
53632229 DG |
110 | /* Tracing session id */ |
111 | unsigned int id; | |
fda89c9b DG |
112 | }; |
113 | ||
62499ad6 DG |
114 | /* |
115 | * Lookup functions. NULL is returned if not found. | |
116 | */ | |
117 | struct ltt_kernel_event *trace_kernel_get_event_by_name( | |
19e70852 | 118 | char *name, struct ltt_kernel_channel *channel); |
62499ad6 | 119 | struct ltt_kernel_channel *trace_kernel_get_channel_by_name( |
19e70852 DG |
120 | char *name, struct ltt_kernel_session *session); |
121 | ||
54012638 | 122 | /* |
c363b55d | 123 | * Create functions malloc() the data structure. |
54012638 | 124 | */ |
f9815039 | 125 | struct ltt_kernel_session *trace_kernel_create_session(char *path); |
62499ad6 DG |
126 | struct ltt_kernel_channel *trace_kernel_create_channel(struct lttng_channel *chan, char *path); |
127 | struct ltt_kernel_event *trace_kernel_create_event(struct lttng_event *ev); | |
a4b92340 | 128 | struct ltt_kernel_metadata *trace_kernel_create_metadata(void); |
00e2e675 DG |
129 | struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, |
130 | unsigned int count); | |
54012638 | 131 | |
c363b55d DG |
132 | /* |
133 | * Destroy functions free() the data structure and remove from linked list if | |
134 | * it's applies. | |
135 | */ | |
62499ad6 DG |
136 | void trace_kernel_destroy_session(struct ltt_kernel_session *session); |
137 | void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); | |
138 | void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); | |
139 | void trace_kernel_destroy_event(struct ltt_kernel_event *event); | |
140 | void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); | |
c363b55d | 141 | |
62499ad6 | 142 | #endif /* _LTT_TRACE_KERNEL_H */ |