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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 DG |
22 | #include <limits.h> |
23 | #include <urcu/list.h> | |
bec39940 | 24 | |
97ee3a89 | 25 | #include <lttng/lttng.h> |
10a8a223 | 26 | #include <common/hashtable/hashtable.h> |
ce2a9e76 | 27 | #include <common/defaults.h> |
3bd1e081 | 28 | |
00e2e675 | 29 | #include "consumer.h" |
48842b30 | 30 | #include "ust-ctl.h" |
97ee3a89 | 31 | |
18eace3b DG |
32 | struct ltt_ust_ht_key { |
33 | const char *name; | |
34 | const struct lttng_filter_bytecode *filter; | |
35 | enum lttng_ust_loglevel_type loglevel; | |
36 | }; | |
37 | ||
f6a9efaa DG |
38 | /* Context hash table nodes */ |
39 | struct ltt_ust_context { | |
40 | struct lttng_ust_context ctx; | |
bec39940 | 41 | struct lttng_ht_node_ulong node; |
97ee3a89 DG |
42 | }; |
43 | ||
44 | /* UST event */ | |
45 | struct ltt_ust_event { | |
37357452 | 46 | unsigned int enabled; |
f6a9efaa | 47 | struct lttng_ust_event attr; |
bec39940 | 48 | struct lttng_ht_node_str node; |
53a80697 | 49 | struct lttng_ust_filter_bytecode *filter; |
2bdd86d4 MD |
50 | }; |
51 | ||
97ee3a89 DG |
52 | /* UST channel */ |
53 | struct ltt_ust_channel { | |
37357452 | 54 | unsigned int enabled; |
44d3bd01 | 55 | char name[LTTNG_UST_SYM_NAME_LEN]; |
48842b30 | 56 | char pathname[PATH_MAX]; |
f6a9efaa | 57 | struct lttng_ust_channel attr; |
bec39940 DG |
58 | struct lttng_ht *ctx; |
59 | struct lttng_ht *events; | |
60 | struct lttng_ht_node_str node; | |
97ee3a89 DG |
61 | }; |
62 | ||
63 | /* UST Metadata */ | |
64 | struct ltt_ust_metadata { | |
65 | int handle; | |
13161846 | 66 | struct lttng_ust_object_data *obj; |
f6a9efaa | 67 | char pathname[PATH_MAX]; /* Trace file path name */ |
44d3bd01 | 68 | struct lttng_ust_channel attr; |
13161846 | 69 | struct lttng_ust_object_data *stream_obj; |
97ee3a89 DG |
70 | }; |
71 | ||
f6a9efaa DG |
72 | /* UST domain global (LTTNG_DOMAIN_UST) */ |
73 | struct ltt_ust_domain_global { | |
bec39940 | 74 | struct lttng_ht *channels; |
f6a9efaa DG |
75 | }; |
76 | ||
77 | /* UST domain pid (LTTNG_DOMAIN_UST_PID) */ | |
78 | struct ltt_ust_domain_pid { | |
79 | pid_t pid; | |
bec39940 DG |
80 | struct lttng_ht *channels; |
81 | struct lttng_ht_node_ulong node; | |
f6a9efaa DG |
82 | }; |
83 | ||
84 | /* UST domain exec name (LTTNG_DOMAIN_UST_EXEC_NAME) */ | |
85 | struct ltt_ust_domain_exec { | |
86 | char exec_name[LTTNG_UST_SYM_NAME_LEN]; | |
bec39940 DG |
87 | struct lttng_ht *channels; |
88 | struct lttng_ht_node_str node; | |
f6a9efaa DG |
89 | }; |
90 | ||
97ee3a89 DG |
91 | /* UST session */ |
92 | struct ltt_ust_session { | |
a991f516 | 93 | int id; /* Unique identifier of session */ |
36dc12cc | 94 | int start_trace; |
48842b30 | 95 | char pathname[PATH_MAX]; |
f6a9efaa DG |
96 | struct ltt_ust_domain_global domain_global; |
97 | /* | |
48842b30 DG |
98 | * Those two hash tables contains data for a specific UST domain and each |
99 | * contains a HT of channels. See ltt_ust_domain_exec and | |
100 | * ltt_ust_domain_pid data structures. | |
f6a9efaa | 101 | */ |
bec39940 DG |
102 | struct lttng_ht *domain_pid; |
103 | struct lttng_ht *domain_exec; | |
6df2e2c9 MD |
104 | /* UID/GID of the user owning the session */ |
105 | uid_t uid; | |
106 | gid_t gid; | |
00e2e675 DG |
107 | /* |
108 | * Two consumer_output object are needed where one is for the current | |
109 | * output object and the second one is the temporary object used to store | |
110 | * URI being set by the lttng_set_consumer_uri call. Once | |
111 | * lttng_enable_consumer is called, the two pointers are swapped. | |
112 | */ | |
113 | struct consumer_output *consumer; | |
114 | struct consumer_output *tmp_consumer; | |
f3f0db50 DG |
115 | /* Sequence number for filters so the tracer knows the ordering. */ |
116 | uint64_t filter_seq_num; | |
97ee3a89 DG |
117 | }; |
118 | ||
74d0b642 | 119 | #ifdef HAVE_LIBLTTNG_UST_CTL |
3bd1e081 | 120 | |
18eace3b DG |
121 | int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key); |
122 | int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, | |
123 | const void *_key); | |
124 | ||
97ee3a89 DG |
125 | /* |
126 | * Lookup functions. NULL is returned if not found. | |
127 | */ | |
18eace3b DG |
128 | struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, |
129 | char *name, struct lttng_filter_bytecode *filter, int loglevel); | |
bec39940 | 130 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
f6a9efaa | 131 | char *name); |
97ee3a89 DG |
132 | |
133 | /* | |
134 | * Create functions malloc() the data structure. | |
135 | */ | |
fc4705fe DG |
136 | struct ltt_ust_session *trace_ust_create_session(char *path, |
137 | unsigned int session_id, struct lttng_domain *domain); | |
44d3bd01 DG |
138 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, |
139 | char *path); | |
025faf73 DG |
140 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev, |
141 | struct lttng_filter_bytecode *filter); | |
97ee3a89 | 142 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path); |
55cc08a6 DG |
143 | struct ltt_ust_context *trace_ust_create_context( |
144 | struct lttng_event_context *ctx); | |
97ee3a89 DG |
145 | |
146 | /* | |
147 | * Destroy functions free() the data structure and remove from linked list if | |
148 | * it's applies. | |
149 | */ | |
150 | void trace_ust_destroy_session(struct ltt_ust_session *session); | |
151 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata); | |
152 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel); | |
153 | void trace_ust_destroy_event(struct ltt_ust_event *event); | |
154 | ||
74d0b642 | 155 | #else /* HAVE_LIBLTTNG_UST_CTL */ |
3bd1e081 | 156 | |
37a86c61 DG |
157 | static inline int trace_ust_ht_match_event(struct cds_lfht_node *node, |
158 | const void *_key) | |
159 | { | |
160 | return 0; | |
161 | } | |
162 | static inline int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, | |
163 | const void *_key) | |
164 | { | |
165 | return 0; | |
166 | } | |
3bd1e081 | 167 | static inline |
bec39940 | 168 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
f6a9efaa | 169 | char *name) |
3bd1e081 MD |
170 | { |
171 | return NULL; | |
172 | } | |
f6a9efaa | 173 | |
3bd1e081 MD |
174 | static inline |
175 | struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid, | |
176 | struct lttng_domain *domain) | |
177 | { | |
178 | return NULL; | |
179 | } | |
180 | static inline | |
181 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, | |
182 | char *path) | |
183 | { | |
184 | return NULL; | |
185 | } | |
186 | static inline | |
025faf73 DG |
187 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev, |
188 | struct lttng_filter_bytecode *filter) | |
3bd1e081 MD |
189 | { |
190 | return NULL; | |
191 | } | |
192 | static inline | |
193 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path) | |
194 | { | |
195 | return NULL; | |
196 | } | |
197 | ||
198 | static inline | |
199 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
200 | { | |
201 | } | |
48842b30 | 202 | |
3bd1e081 MD |
203 | static inline |
204 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata) | |
205 | { | |
206 | } | |
48842b30 | 207 | |
3bd1e081 MD |
208 | static inline |
209 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
210 | { | |
211 | } | |
48842b30 | 212 | |
3bd1e081 MD |
213 | static inline |
214 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
215 | { | |
216 | } | |
34378f76 DG |
217 | static inline |
218 | struct ltt_ust_context *trace_ust_create_context( | |
219 | struct lttng_event_context *ctx) | |
220 | { | |
221 | return NULL; | |
222 | } | |
37a86c61 DG |
223 | static inline struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, |
224 | char *name, struct lttng_filter_bytecode *filter, int loglevel) | |
225 | { | |
226 | return NULL; | |
227 | } | |
3bd1e081 | 228 | |
74d0b642 | 229 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
3bd1e081 | 230 | |
97ee3a89 | 231 | #endif /* _LTT_TRACE_UST_H */ |