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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 | 23 | #include <limits.h> |
f6a9efaa | 24 | #include <urcu.h> |
97ee3a89 | 25 | #include <urcu/list.h> |
97ee3a89 | 26 | #include <lttng/lttng.h> |
3bd1e081 MD |
27 | |
28 | /* | |
29 | * FIXME: temporary workaround: we use a lttng-tools local version of | |
30 | * lttng-ust-abi.h if UST is not found. Eventually, we should use our | |
31 | * own internal structures within lttng-tools instead of relying on the | |
32 | * UST ABI. | |
33 | */ | |
34 | #ifdef CONFIG_CONFIG_LTTNG_TOOLS_HAVE_UST | |
35 | #include <ust/lttng-ust-abi.h> | |
36 | #else | |
37 | #include "lttng-ust-abi.h" | |
38 | #endif | |
97ee3a89 | 39 | |
f6a9efaa | 40 | #include "../hashtable/rculfhash.h" |
0177d773 | 41 | |
97ee3a89 | 42 | |
2bdd86d4 MD |
43 | /* UST Stream list */ |
44 | struct ltt_ust_stream_list { | |
45 | unsigned int count; | |
46 | struct cds_list_head head; | |
47 | }; | |
48 | ||
f6a9efaa DG |
49 | /* Context hash table nodes */ |
50 | struct ltt_ust_context { | |
51 | struct lttng_ust_context ctx; | |
52 | struct cds_lfht_node node; | |
97ee3a89 DG |
53 | }; |
54 | ||
55 | /* UST event */ | |
56 | struct ltt_ust_event { | |
57 | int handle; | |
58 | int enabled; | |
2bdd86d4 | 59 | struct object_data *obj; |
f6a9efaa DG |
60 | struct lttng_ust_event attr; |
61 | struct cds_lfht *ctx; | |
62 | struct cds_lfht_node node; | |
2bdd86d4 MD |
63 | }; |
64 | ||
65 | /* UST stream */ | |
66 | struct ltt_ust_stream { | |
f6a9efaa | 67 | /* TODO hashtable */ |
2bdd86d4 MD |
68 | struct object_data *obj; |
69 | struct cds_list_head list; | |
70 | char *pathname; | |
97ee3a89 DG |
71 | }; |
72 | ||
73 | /* UST channel */ | |
74 | struct ltt_ust_channel { | |
75 | int handle; | |
76 | int enabled; | |
44d3bd01 DG |
77 | char name[LTTNG_UST_SYM_NAME_LEN]; |
78 | char trace_path[PATH_MAX]; /* Trace file path name */ | |
2bdd86d4 | 79 | struct object_data *obj; |
f6a9efaa | 80 | |
2bdd86d4 MD |
81 | unsigned int stream_count; |
82 | struct ltt_ust_stream_list stream_list; | |
f6a9efaa DG |
83 | struct lttng_ust_channel attr; |
84 | struct cds_lfht *ctx; | |
85 | struct cds_lfht *events; | |
86 | struct cds_lfht_node node; | |
97ee3a89 DG |
87 | }; |
88 | ||
89 | /* UST Metadata */ | |
90 | struct ltt_ust_metadata { | |
91 | int handle; | |
2bdd86d4 | 92 | struct object_data *obj; |
f6a9efaa | 93 | char pathname[PATH_MAX]; /* Trace file path name */ |
44d3bd01 | 94 | struct lttng_ust_channel attr; |
2bdd86d4 | 95 | struct object_data *stream_obj; |
97ee3a89 DG |
96 | }; |
97 | ||
f6a9efaa DG |
98 | /* UST domain global (LTTNG_DOMAIN_UST) */ |
99 | struct ltt_ust_domain_global { | |
100 | struct cds_lfht *channels; | |
101 | }; | |
102 | ||
103 | /* UST domain pid (LTTNG_DOMAIN_UST_PID) */ | |
104 | struct ltt_ust_domain_pid { | |
105 | pid_t pid; | |
106 | struct cds_lfht *channels; | |
107 | struct cds_lfht_node node; | |
108 | }; | |
109 | ||
110 | /* UST domain exec name (LTTNG_DOMAIN_UST_EXEC_NAME) */ | |
111 | struct ltt_ust_domain_exec { | |
112 | char exec_name[LTTNG_UST_SYM_NAME_LEN]; | |
113 | struct cds_lfht *channels; | |
114 | struct cds_lfht_node node; | |
115 | }; | |
116 | ||
97ee3a89 DG |
117 | /* UST session */ |
118 | struct ltt_ust_session { | |
2bdd86d4 | 119 | int sock; /* socket to send cmds to app */ |
97ee3a89 DG |
120 | int handle; |
121 | int enabled; | |
3bd1e081 | 122 | int consumer_fds_sent; |
2bdd86d4 | 123 | int consumer_fd; |
44d3bd01 | 124 | char path[PATH_MAX]; |
97ee3a89 | 125 | struct ltt_ust_metadata *metadata; |
2bdd86d4 | 126 | struct object_data *obj; |
f6a9efaa DG |
127 | struct ltt_ust_domain_global domain_global; |
128 | /* | |
129 | * Those two hash tables contains data for a specific UST domain and a HT | |
130 | * of channels for each. See ltt_ust_domain_exec and ltt_ust_domain_pid | |
131 | * data structures. | |
132 | */ | |
133 | struct cds_lfht *domain_pid; | |
134 | struct cds_lfht *domain_exec; | |
97ee3a89 DG |
135 | }; |
136 | ||
3bd1e081 MD |
137 | #ifdef CONFIG_LTTNG_TOOLS_HAVE_UST |
138 | ||
97ee3a89 DG |
139 | /* |
140 | * Lookup functions. NULL is returned if not found. | |
141 | */ | |
f6a9efaa DG |
142 | struct ltt_ust_event *trace_ust_find_event_by_name(struct cds_lfht *ht, |
143 | char *name); | |
144 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct cds_lfht *ht, | |
145 | char *name); | |
97ee3a89 DG |
146 | |
147 | /* | |
148 | * Create functions malloc() the data structure. | |
149 | */ | |
44d3bd01 DG |
150 | struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid, |
151 | struct lttng_domain *domain); | |
152 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, | |
153 | char *path); | |
97ee3a89 DG |
154 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev); |
155 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path); | |
156 | ||
157 | /* | |
158 | * Destroy functions free() the data structure and remove from linked list if | |
159 | * it's applies. | |
160 | */ | |
161 | void trace_ust_destroy_session(struct ltt_ust_session *session); | |
162 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata); | |
163 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel); | |
164 | void trace_ust_destroy_event(struct ltt_ust_event *event); | |
165 | ||
3bd1e081 MD |
166 | #else |
167 | ||
168 | static inline | |
f6a9efaa DG |
169 | struct ltt_ust_event *trace_ust_find_event_by_name(struct cds_lfht *ht, |
170 | char *name) | |
3bd1e081 MD |
171 | { |
172 | return NULL; | |
173 | } | |
f6a9efaa | 174 | |
3bd1e081 | 175 | static inline |
f6a9efaa DG |
176 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct cds_lfht *ht, |
177 | char *name) | |
3bd1e081 MD |
178 | { |
179 | return NULL; | |
180 | } | |
f6a9efaa | 181 | |
3bd1e081 MD |
182 | static inline |
183 | struct ltt_ust_session *trace_ust_get_session_by_pid( | |
184 | struct ltt_ust_session_list *session_list, pid_t pid) | |
185 | { | |
186 | return NULL; | |
187 | } | |
188 | ||
189 | static inline | |
190 | struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid, | |
191 | struct lttng_domain *domain) | |
192 | { | |
193 | return NULL; | |
194 | } | |
195 | static inline | |
196 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, | |
197 | char *path) | |
198 | { | |
199 | return NULL; | |
200 | } | |
201 | static inline | |
202 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev) | |
203 | { | |
204 | return NULL; | |
205 | } | |
206 | static inline | |
207 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path) | |
208 | { | |
209 | return NULL; | |
210 | } | |
211 | ||
212 | static inline | |
213 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
214 | { | |
215 | } | |
216 | static inline | |
217 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata) | |
218 | { | |
219 | } | |
220 | static inline | |
221 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
222 | { | |
223 | } | |
224 | static inline | |
225 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
226 | { | |
227 | } | |
228 | ||
229 | #endif | |
230 | ||
97ee3a89 | 231 | #endif /* _LTT_TRACE_UST_H */ |