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 | ||
645328ae DG |
45 | struct ltt_kernel_context { |
46 | struct lttng_kernel_context ctx; | |
47 | struct cds_list_head list; | |
ba985c3a JG |
48 | /* Indicates whether or not the context is in a list. */ |
49 | bool in_list; | |
645328ae DG |
50 | }; |
51 | ||
20fe2104 DG |
52 | /* Kernel event */ |
53 | struct ltt_kernel_event { | |
20fe2104 | 54 | int fd; |
e953ef25 | 55 | int enabled; |
d0ae4ea8 | 56 | enum lttng_event_type type; |
f34daff7 | 57 | struct lttng_kernel_event *event; |
20fe2104 | 58 | struct cds_list_head list; |
00a62084 MD |
59 | char *filter_expression; |
60 | struct lttng_filter_bytecode *filter; | |
3c02e545 | 61 | struct lttng_userspace_probe_location *userspace_probe_location; |
20fe2104 DG |
62 | }; |
63 | ||
64 | /* Kernel channel */ | |
65 | struct ltt_kernel_channel { | |
66 | int fd; | |
e1f3997a | 67 | uint64_t key; /* Key to reference this channel with the consumer. */ |
d36b8583 | 68 | int enabled; |
8c0faa1d | 69 | unsigned int stream_count; |
cbbbb275 | 70 | unsigned int event_count; |
753873bf | 71 | bool published_to_notification_thread; |
645328ae | 72 | struct cds_list_head ctx_list; |
f3ed775e | 73 | struct lttng_channel *channel; |
20fe2104 | 74 | struct ltt_kernel_event_list events_list; |
8c0faa1d DG |
75 | struct ltt_kernel_stream_list stream_list; |
76 | struct cds_list_head list; | |
fb5f35b6 DG |
77 | /* Session pointer which has a reference to this object. */ |
78 | struct ltt_kernel_session *session; | |
e99f9447 | 79 | bool sent_to_consumer; |
20fe2104 DG |
80 | }; |
81 | ||
aaf26714 DG |
82 | /* Metadata */ |
83 | struct ltt_kernel_metadata { | |
84 | int fd; | |
d40f0359 | 85 | uint64_t key; /* Key to reference this channel with the consumer. */ |
f3ed775e | 86 | struct lttng_channel *conf; |
aaf26714 DG |
87 | }; |
88 | ||
8c0faa1d DG |
89 | /* Channel stream */ |
90 | struct ltt_kernel_stream { | |
91 | int fd; | |
8c0faa1d | 92 | int state; |
ffe60014 | 93 | int cpu; |
6986ab9b | 94 | bool sent_to_consumer; |
00e2e675 | 95 | /* Format is %s_%d respectively channel name and CPU number. */ |
ce2a9e76 | 96 | char name[DEFAULT_STREAM_NAME_LEN]; |
1624d5b7 JD |
97 | uint64_t tracefile_size; |
98 | uint64_t tracefile_count; | |
8c0faa1d DG |
99 | struct cds_list_head list; |
100 | }; | |
101 | ||
20fe2104 DG |
102 | /* Kernel session */ |
103 | struct ltt_kernel_session { | |
104 | int fd; | |
8c0faa1d | 105 | int metadata_stream_fd; |
3bd1e081 | 106 | int consumer_fds_sent; |
8c0faa1d DG |
107 | unsigned int channel_count; |
108 | unsigned int stream_count_global; | |
aaf26714 | 109 | struct ltt_kernel_metadata *metadata; |
8c0faa1d | 110 | struct ltt_kernel_channel_list channel_list; |
6df2e2c9 MD |
111 | /* UID/GID of the user owning the session */ |
112 | uid_t uid; | |
113 | gid_t gid; | |
00e2e675 | 114 | struct consumer_output *consumer; |
53632229 | 115 | /* Tracing session id */ |
d022620a | 116 | uint64_t id; |
14fb1ebe DG |
117 | /* Session is active or not meaning it has been started or stopped. */ |
118 | unsigned int active:1; | |
2bba9e53 DG |
119 | /* Tell or not if the session has to output the traces. */ |
120 | unsigned int output_traces; | |
27babd3a | 121 | unsigned int snapshot_mode; |
85076754 | 122 | unsigned int has_non_default_channel; |
82b69413 JG |
123 | /* Current trace chunk of the ltt_session. */ |
124 | struct lttng_trace_chunk *current_trace_chunk; | |
fda89c9b DG |
125 | }; |
126 | ||
62499ad6 DG |
127 | /* |
128 | * Lookup functions. NULL is returned if not found. | |
129 | */ | |
130 | struct ltt_kernel_event *trace_kernel_get_event_by_name( | |
d0ae4ea8 MD |
131 | char *name, struct ltt_kernel_channel *channel, |
132 | enum lttng_event_type type); | |
00a62084 MD |
133 | struct ltt_kernel_event *trace_kernel_find_event( |
134 | char *name, struct ltt_kernel_channel *channel, | |
135 | enum lttng_event_type type, | |
136 | struct lttng_filter_bytecode *filter); | |
62499ad6 | 137 | struct ltt_kernel_channel *trace_kernel_get_channel_by_name( |
19e70852 DG |
138 | char *name, struct ltt_kernel_session *session); |
139 | ||
54012638 | 140 | /* |
c363b55d | 141 | * Create functions malloc() the data structure. |
54012638 | 142 | */ |
dec56f6c | 143 | struct ltt_kernel_session *trace_kernel_create_session(void); |
fdd9eb17 DG |
144 | struct ltt_kernel_channel *trace_kernel_create_channel( |
145 | struct lttng_channel *chan); | |
71a3bb01 FD |
146 | enum lttng_error_code trace_kernel_create_event(struct lttng_event *ev, |
147 | char *filter_expression, struct lttng_filter_bytecode *filter, | |
148 | struct ltt_kernel_event **kernel_event); | |
a4b92340 | 149 | struct ltt_kernel_metadata *trace_kernel_create_metadata(void); |
00e2e675 DG |
150 | struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, |
151 | unsigned int count); | |
645328ae DG |
152 | struct ltt_kernel_context *trace_kernel_create_context( |
153 | struct lttng_kernel_context *ctx); | |
df3c77c8 JG |
154 | struct ltt_kernel_context *trace_kernel_copy_context( |
155 | struct ltt_kernel_context *ctx); | |
54012638 | 156 | |
c363b55d DG |
157 | /* |
158 | * Destroy functions free() the data structure and remove from linked list if | |
159 | * it's applies. | |
160 | */ | |
62499ad6 DG |
161 | void trace_kernel_destroy_session(struct ltt_kernel_session *session); |
162 | void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); | |
163 | void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); | |
164 | void trace_kernel_destroy_event(struct ltt_kernel_event *event); | |
165 | void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); | |
645328ae | 166 | void trace_kernel_destroy_context(struct ltt_kernel_context *ctx); |
d070c424 | 167 | void trace_kernel_free_session(struct ltt_kernel_session *session); |
c363b55d | 168 | |
62499ad6 | 169 | #endif /* _LTT_TRACE_KERNEL_H */ |