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97ee3a89 DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; only version 2 | |
7 | * of the License. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 | */ | |
18 | ||
19 | #ifndef _LTT_TRACE_UST_H | |
20 | #define _LTT_TRACE_UST_H | |
21 | ||
3bd1e081 | 22 | #include <config.h> |
97ee3a89 DG |
23 | #include <limits.h> |
24 | #include <urcu/list.h> | |
97ee3a89 | 25 | #include <lttng/lttng.h> |
3bd1e081 MD |
26 | |
27 | /* | |
28 | * FIXME: temporary workaround: we use a lttng-tools local version of | |
29 | * lttng-ust-abi.h if UST is not found. Eventually, we should use our | |
30 | * own internal structures within lttng-tools instead of relying on the | |
31 | * UST ABI. | |
32 | */ | |
33 | #ifdef CONFIG_CONFIG_LTTNG_TOOLS_HAVE_UST | |
34 | #include <ust/lttng-ust-abi.h> | |
35 | #else | |
36 | #include "lttng-ust-abi.h" | |
37 | #endif | |
97ee3a89 | 38 | |
0177d773 DG |
39 | /* |
40 | * UST session list. | |
41 | */ | |
42 | struct ltt_ust_session_list { | |
43 | unsigned int count; | |
44 | struct cds_list_head head; | |
45 | }; | |
46 | ||
97ee3a89 DG |
47 | /* UST event list */ |
48 | struct ltt_ust_event_list { | |
49 | unsigned int count; | |
50 | struct cds_list_head head; | |
51 | }; | |
52 | ||
2bdd86d4 MD |
53 | /* UST Stream list */ |
54 | struct ltt_ust_stream_list { | |
55 | unsigned int count; | |
56 | struct cds_list_head head; | |
57 | }; | |
58 | ||
97ee3a89 DG |
59 | /* UST Channel list */ |
60 | struct ltt_ust_channel_list { | |
61 | unsigned int count; | |
62 | struct cds_list_head head; | |
63 | }; | |
64 | ||
65 | /* UST event */ | |
66 | struct ltt_ust_event { | |
67 | int handle; | |
68 | int enabled; | |
2bdd86d4 MD |
69 | /* |
70 | * TODO: need internal representation to support more than a | |
71 | * single context. | |
72 | */ | |
44d3bd01 DG |
73 | struct lttng_ust_context ctx; |
74 | struct lttng_ust_event attr; | |
97ee3a89 | 75 | struct cds_list_head list; |
2bdd86d4 MD |
76 | struct object_data *obj; |
77 | }; | |
78 | ||
79 | /* UST stream */ | |
80 | struct ltt_ust_stream { | |
81 | struct object_data *obj; | |
82 | struct cds_list_head list; | |
83 | char *pathname; | |
97ee3a89 DG |
84 | }; |
85 | ||
86 | /* UST channel */ | |
87 | struct ltt_ust_channel { | |
88 | int handle; | |
89 | int enabled; | |
44d3bd01 DG |
90 | char name[LTTNG_UST_SYM_NAME_LEN]; |
91 | char trace_path[PATH_MAX]; /* Trace file path name */ | |
2bdd86d4 MD |
92 | /* |
93 | * TODO: need internal representation to support more than a | |
94 | * single context. | |
95 | */ | |
44d3bd01 DG |
96 | struct lttng_ust_context ctx; |
97 | struct lttng_ust_channel attr; | |
97ee3a89 DG |
98 | struct ltt_ust_event_list events; |
99 | struct cds_list_head list; | |
2bdd86d4 MD |
100 | struct object_data *obj; |
101 | unsigned int stream_count; | |
102 | struct ltt_ust_stream_list stream_list; | |
97ee3a89 DG |
103 | }; |
104 | ||
105 | /* UST Metadata */ | |
106 | struct ltt_ust_metadata { | |
107 | int handle; | |
2bdd86d4 MD |
108 | struct object_data *obj; |
109 | char *pathname; /* Trace file path name */ | |
44d3bd01 | 110 | struct lttng_ust_channel attr; |
2bdd86d4 | 111 | struct object_data *stream_obj; |
97ee3a89 DG |
112 | }; |
113 | ||
114 | /* UST session */ | |
115 | struct ltt_ust_session { | |
2bdd86d4 | 116 | int sock; /* socket to send cmds to app */ |
97ee3a89 DG |
117 | int handle; |
118 | int enabled; | |
3bd1e081 | 119 | int consumer_fds_sent; |
2bdd86d4 | 120 | int consumer_fd; |
44d3bd01 DG |
121 | char path[PATH_MAX]; |
122 | struct lttng_domain domain; | |
97ee3a89 DG |
123 | struct ltt_ust_metadata *metadata; |
124 | struct ltt_ust_channel_list channels; | |
0177d773 | 125 | struct cds_list_head list; |
2bdd86d4 | 126 | struct object_data *obj; |
97ee3a89 DG |
127 | }; |
128 | ||
3bd1e081 MD |
129 | #ifdef CONFIG_LTTNG_TOOLS_HAVE_UST |
130 | ||
97ee3a89 DG |
131 | /* |
132 | * Lookup functions. NULL is returned if not found. | |
133 | */ | |
134 | struct ltt_ust_event *trace_ust_get_event_by_name( | |
135 | char *name, struct ltt_ust_channel *channel); | |
136 | struct ltt_ust_channel *trace_ust_get_channel_by_name( | |
137 | char *name, struct ltt_ust_session *session); | |
44d3bd01 DG |
138 | struct ltt_ust_session *trace_ust_get_session_by_pid( |
139 | struct ltt_ust_session_list *session_list, pid_t pid); | |
97ee3a89 DG |
140 | |
141 | /* | |
142 | * Create functions malloc() the data structure. | |
143 | */ | |
44d3bd01 DG |
144 | struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid, |
145 | struct lttng_domain *domain); | |
146 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, | |
147 | char *path); | |
97ee3a89 DG |
148 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev); |
149 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path); | |
150 | ||
151 | /* | |
152 | * Destroy functions free() the data structure and remove from linked list if | |
153 | * it's applies. | |
154 | */ | |
155 | void trace_ust_destroy_session(struct ltt_ust_session *session); | |
156 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata); | |
157 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel); | |
158 | void trace_ust_destroy_event(struct ltt_ust_event *event); | |
159 | ||
3bd1e081 MD |
160 | #else |
161 | ||
162 | static inline | |
163 | struct ltt_ust_event *trace_ust_get_event_by_name( | |
164 | char *name, struct ltt_ust_channel *channel) | |
165 | { | |
166 | return NULL; | |
167 | } | |
168 | static inline | |
169 | struct ltt_ust_channel *trace_ust_get_channel_by_name( | |
170 | char *name, struct ltt_ust_session *session) | |
171 | { | |
172 | return NULL; | |
173 | } | |
174 | static inline | |
175 | struct ltt_ust_session *trace_ust_get_session_by_pid( | |
176 | struct ltt_ust_session_list *session_list, pid_t pid) | |
177 | { | |
178 | return NULL; | |
179 | } | |
180 | ||
181 | static inline | |
182 | struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid, | |
183 | struct lttng_domain *domain) | |
184 | { | |
185 | return NULL; | |
186 | } | |
187 | static inline | |
188 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, | |
189 | char *path) | |
190 | { | |
191 | return NULL; | |
192 | } | |
193 | static inline | |
194 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev) | |
195 | { | |
196 | return NULL; | |
197 | } | |
198 | static inline | |
199 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path) | |
200 | { | |
201 | return NULL; | |
202 | } | |
203 | ||
204 | static inline | |
205 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
206 | { | |
207 | } | |
208 | static inline | |
209 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata) | |
210 | { | |
211 | } | |
212 | static inline | |
213 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
214 | { | |
215 | } | |
216 | static inline | |
217 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
218 | { | |
219 | } | |
220 | ||
221 | #endif | |
222 | ||
97ee3a89 | 223 | #endif /* _LTT_TRACE_UST_H */ |