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97ee3a89 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. | |
97ee3a89 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. | |
97ee3a89 DG |
16 | */ |
17 | ||
18 | #ifndef _LTT_TRACE_UST_H | |
19 | #define _LTT_TRACE_UST_H | |
20 | ||
3bd1e081 | 21 | #include <config.h> |
97ee3a89 | 22 | #include <limits.h> |
f6a9efaa | 23 | #include <urcu.h> |
97ee3a89 | 24 | #include <urcu/list.h> |
bec39940 | 25 | |
97ee3a89 | 26 | #include <lttng/lttng.h> |
10a8a223 | 27 | #include <common/hashtable/hashtable.h> |
3bd1e081 | 28 | |
48842b30 | 29 | #include "ust-ctl.h" |
97ee3a89 | 30 | |
2bdd86d4 MD |
31 | /* UST Stream list */ |
32 | struct ltt_ust_stream_list { | |
33 | unsigned int count; | |
34 | struct cds_list_head head; | |
35 | }; | |
36 | ||
f6a9efaa DG |
37 | /* Context hash table nodes */ |
38 | struct ltt_ust_context { | |
39 | struct lttng_ust_context ctx; | |
bec39940 | 40 | struct lttng_ht_node_ulong node; |
97ee3a89 DG |
41 | }; |
42 | ||
43 | /* UST event */ | |
44 | struct ltt_ust_event { | |
37357452 | 45 | unsigned int enabled; |
f6a9efaa | 46 | struct lttng_ust_event attr; |
bec39940 DG |
47 | struct lttng_ht *ctx; |
48 | struct lttng_ht_node_str node; | |
2bdd86d4 MD |
49 | }; |
50 | ||
51 | /* UST stream */ | |
52 | struct ltt_ust_stream { | |
48842b30 DG |
53 | int handle; |
54 | char pathname[PATH_MAX]; | |
13161846 | 55 | struct lttng_ust_object_data *obj; |
5af2f756 MD |
56 | /* Using a list of streams to keep order. */ |
57 | struct cds_list_head list; | |
97ee3a89 DG |
58 | }; |
59 | ||
60 | /* UST channel */ | |
61 | struct ltt_ust_channel { | |
37357452 | 62 | unsigned int enabled; |
44d3bd01 | 63 | char name[LTTNG_UST_SYM_NAME_LEN]; |
48842b30 | 64 | char pathname[PATH_MAX]; |
f6a9efaa | 65 | struct lttng_ust_channel attr; |
bec39940 DG |
66 | struct lttng_ht *ctx; |
67 | struct lttng_ht *events; | |
68 | struct lttng_ht_node_str node; | |
97ee3a89 DG |
69 | }; |
70 | ||
71 | /* UST Metadata */ | |
72 | struct ltt_ust_metadata { | |
73 | int handle; | |
13161846 | 74 | struct lttng_ust_object_data *obj; |
f6a9efaa | 75 | char pathname[PATH_MAX]; /* Trace file path name */ |
44d3bd01 | 76 | struct lttng_ust_channel attr; |
13161846 | 77 | struct lttng_ust_object_data *stream_obj; |
97ee3a89 DG |
78 | }; |
79 | ||
f6a9efaa DG |
80 | /* UST domain global (LTTNG_DOMAIN_UST) */ |
81 | struct ltt_ust_domain_global { | |
bec39940 | 82 | struct lttng_ht *channels; |
f6a9efaa DG |
83 | }; |
84 | ||
85 | /* UST domain pid (LTTNG_DOMAIN_UST_PID) */ | |
86 | struct ltt_ust_domain_pid { | |
87 | pid_t pid; | |
bec39940 DG |
88 | struct lttng_ht *channels; |
89 | struct lttng_ht_node_ulong node; | |
f6a9efaa DG |
90 | }; |
91 | ||
92 | /* UST domain exec name (LTTNG_DOMAIN_UST_EXEC_NAME) */ | |
93 | struct ltt_ust_domain_exec { | |
94 | char exec_name[LTTNG_UST_SYM_NAME_LEN]; | |
bec39940 DG |
95 | struct lttng_ht *channels; |
96 | struct lttng_ht_node_str node; | |
f6a9efaa DG |
97 | }; |
98 | ||
97ee3a89 DG |
99 | /* UST session */ |
100 | struct ltt_ust_session { | |
a991f516 | 101 | int id; /* Unique identifier of session */ |
36dc12cc | 102 | int start_trace; |
48842b30 | 103 | char pathname[PATH_MAX]; |
f6a9efaa DG |
104 | struct ltt_ust_domain_global domain_global; |
105 | /* | |
48842b30 DG |
106 | * Those two hash tables contains data for a specific UST domain and each |
107 | * contains a HT of channels. See ltt_ust_domain_exec and | |
108 | * ltt_ust_domain_pid data structures. | |
f6a9efaa | 109 | */ |
bec39940 DG |
110 | struct lttng_ht *domain_pid; |
111 | struct lttng_ht *domain_exec; | |
6df2e2c9 MD |
112 | /* UID/GID of the user owning the session */ |
113 | uid_t uid; | |
114 | gid_t gid; | |
97ee3a89 DG |
115 | }; |
116 | ||
74d0b642 | 117 | #ifdef HAVE_LIBLTTNG_UST_CTL |
3bd1e081 | 118 | |
97ee3a89 DG |
119 | /* |
120 | * Lookup functions. NULL is returned if not found. | |
121 | */ | |
bec39940 | 122 | struct ltt_ust_event *trace_ust_find_event_by_name(struct lttng_ht *ht, |
f6a9efaa | 123 | char *name); |
bec39940 | 124 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
f6a9efaa | 125 | char *name); |
97ee3a89 DG |
126 | |
127 | /* | |
128 | * Create functions malloc() the data structure. | |
129 | */ | |
a991f516 | 130 | struct ltt_ust_session *trace_ust_create_session(char *path, int session_id, |
44d3bd01 DG |
131 | struct lttng_domain *domain); |
132 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, | |
133 | char *path); | |
97ee3a89 DG |
134 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev); |
135 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path); | |
55cc08a6 DG |
136 | struct ltt_ust_context *trace_ust_create_context( |
137 | struct lttng_event_context *ctx); | |
97ee3a89 DG |
138 | |
139 | /* | |
140 | * Destroy functions free() the data structure and remove from linked list if | |
141 | * it's applies. | |
142 | */ | |
143 | void trace_ust_destroy_session(struct ltt_ust_session *session); | |
144 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata); | |
145 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel); | |
146 | void trace_ust_destroy_event(struct ltt_ust_event *event); | |
147 | ||
74d0b642 | 148 | #else /* HAVE_LIBLTTNG_UST_CTL */ |
3bd1e081 MD |
149 | |
150 | static inline | |
bec39940 | 151 | struct ltt_ust_event *trace_ust_find_event_by_name(struct lttng_ht *ht, |
f6a9efaa | 152 | char *name) |
3bd1e081 MD |
153 | { |
154 | return NULL; | |
155 | } | |
f6a9efaa | 156 | |
3bd1e081 | 157 | static inline |
bec39940 | 158 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
f6a9efaa | 159 | char *name) |
3bd1e081 MD |
160 | { |
161 | return NULL; | |
162 | } | |
f6a9efaa | 163 | |
3bd1e081 MD |
164 | static inline |
165 | struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid, | |
166 | struct lttng_domain *domain) | |
167 | { | |
168 | return NULL; | |
169 | } | |
170 | static inline | |
171 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, | |
172 | char *path) | |
173 | { | |
174 | return NULL; | |
175 | } | |
176 | static inline | |
177 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev) | |
178 | { | |
179 | return NULL; | |
180 | } | |
181 | static inline | |
182 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path) | |
183 | { | |
184 | return NULL; | |
185 | } | |
186 | ||
187 | static inline | |
188 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
189 | { | |
190 | } | |
48842b30 | 191 | |
3bd1e081 MD |
192 | static inline |
193 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata) | |
194 | { | |
195 | } | |
48842b30 | 196 | |
3bd1e081 MD |
197 | static inline |
198 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
199 | { | |
200 | } | |
48842b30 | 201 | |
3bd1e081 MD |
202 | static inline |
203 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
204 | { | |
205 | } | |
34378f76 DG |
206 | static inline |
207 | struct ltt_ust_context *trace_ust_create_context( | |
208 | struct lttng_event_context *ctx) | |
209 | { | |
210 | return NULL; | |
211 | } | |
3bd1e081 | 212 | |
74d0b642 | 213 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
3bd1e081 | 214 | |
97ee3a89 | 215 | #endif /* _LTT_TRACE_UST_H */ |