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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 | 27 | |
48842b30 | 28 | #include "ust-ctl.h" |
97ee3a89 | 29 | |
f6a9efaa | 30 | #include "../hashtable/rculfhash.h" |
0177d773 | 31 | |
2bdd86d4 MD |
32 | /* UST Stream list */ |
33 | struct ltt_ust_stream_list { | |
34 | unsigned int count; | |
35 | struct cds_list_head head; | |
36 | }; | |
37 | ||
f6a9efaa DG |
38 | /* Context hash table nodes */ |
39 | struct ltt_ust_context { | |
40 | struct lttng_ust_context ctx; | |
41 | struct cds_lfht_node node; | |
97ee3a89 DG |
42 | }; |
43 | ||
44 | /* UST event */ | |
45 | struct ltt_ust_event { | |
37357452 | 46 | unsigned int enabled; |
f6a9efaa DG |
47 | struct lttng_ust_event attr; |
48 | struct cds_lfht *ctx; | |
49 | struct cds_lfht_node node; | |
2bdd86d4 MD |
50 | }; |
51 | ||
52 | /* UST stream */ | |
53 | struct ltt_ust_stream { | |
48842b30 DG |
54 | int handle; |
55 | char pathname[PATH_MAX]; | |
13161846 | 56 | struct lttng_ust_object_data *obj; |
5af2f756 MD |
57 | /* Using a list of streams to keep order. */ |
58 | struct cds_list_head list; | |
97ee3a89 DG |
59 | }; |
60 | ||
61 | /* UST channel */ | |
62 | struct ltt_ust_channel { | |
37357452 | 63 | unsigned int enabled; |
44d3bd01 | 64 | char name[LTTNG_UST_SYM_NAME_LEN]; |
48842b30 | 65 | char pathname[PATH_MAX]; |
f6a9efaa DG |
66 | struct lttng_ust_channel attr; |
67 | struct cds_lfht *ctx; | |
68 | struct cds_lfht *events; | |
69 | struct cds_lfht_node node; | |
97ee3a89 DG |
70 | }; |
71 | ||
72 | /* UST Metadata */ | |
73 | struct ltt_ust_metadata { | |
74 | int handle; | |
13161846 | 75 | struct lttng_ust_object_data *obj; |
f6a9efaa | 76 | char pathname[PATH_MAX]; /* Trace file path name */ |
44d3bd01 | 77 | struct lttng_ust_channel attr; |
13161846 | 78 | struct lttng_ust_object_data *stream_obj; |
97ee3a89 DG |
79 | }; |
80 | ||
f6a9efaa DG |
81 | /* UST domain global (LTTNG_DOMAIN_UST) */ |
82 | struct ltt_ust_domain_global { | |
83 | struct cds_lfht *channels; | |
84 | }; | |
85 | ||
86 | /* UST domain pid (LTTNG_DOMAIN_UST_PID) */ | |
87 | struct ltt_ust_domain_pid { | |
88 | pid_t pid; | |
89 | struct cds_lfht *channels; | |
90 | struct cds_lfht_node node; | |
91 | }; | |
92 | ||
93 | /* UST domain exec name (LTTNG_DOMAIN_UST_EXEC_NAME) */ | |
94 | struct ltt_ust_domain_exec { | |
95 | char exec_name[LTTNG_UST_SYM_NAME_LEN]; | |
96 | struct cds_lfht *channels; | |
97 | struct cds_lfht_node node; | |
98 | }; | |
99 | ||
97ee3a89 DG |
100 | /* UST session */ |
101 | struct ltt_ust_session { | |
48842b30 | 102 | int uid; /* Unique identifier of session */ |
36dc12cc | 103 | int start_trace; |
48842b30 | 104 | char pathname[PATH_MAX]; |
f6a9efaa DG |
105 | struct ltt_ust_domain_global domain_global; |
106 | /* | |
48842b30 DG |
107 | * Those two hash tables contains data for a specific UST domain and each |
108 | * contains a HT of channels. See ltt_ust_domain_exec and | |
109 | * ltt_ust_domain_pid data structures. | |
f6a9efaa DG |
110 | */ |
111 | struct cds_lfht *domain_pid; | |
112 | struct cds_lfht *domain_exec; | |
97ee3a89 DG |
113 | }; |
114 | ||
74d0b642 | 115 | #ifdef HAVE_LIBLTTNG_UST_CTL |
3bd1e081 | 116 | |
97ee3a89 DG |
117 | /* |
118 | * Lookup functions. NULL is returned if not found. | |
119 | */ | |
f6a9efaa DG |
120 | struct ltt_ust_event *trace_ust_find_event_by_name(struct cds_lfht *ht, |
121 | char *name); | |
122 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct cds_lfht *ht, | |
123 | char *name); | |
97ee3a89 DG |
124 | |
125 | /* | |
126 | * Create functions malloc() the data structure. | |
127 | */ | |
48842b30 | 128 | struct ltt_ust_session *trace_ust_create_session(char *path, unsigned int uid, |
44d3bd01 DG |
129 | struct lttng_domain *domain); |
130 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, | |
131 | char *path); | |
97ee3a89 DG |
132 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev); |
133 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path); | |
55cc08a6 DG |
134 | struct ltt_ust_context *trace_ust_create_context( |
135 | struct lttng_event_context *ctx); | |
97ee3a89 DG |
136 | |
137 | /* | |
138 | * Destroy functions free() the data structure and remove from linked list if | |
139 | * it's applies. | |
140 | */ | |
141 | void trace_ust_destroy_session(struct ltt_ust_session *session); | |
142 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata); | |
143 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel); | |
144 | void trace_ust_destroy_event(struct ltt_ust_event *event); | |
145 | ||
74d0b642 | 146 | #else /* HAVE_LIBLTTNG_UST_CTL */ |
3bd1e081 MD |
147 | |
148 | static inline | |
f6a9efaa DG |
149 | struct ltt_ust_event *trace_ust_find_event_by_name(struct cds_lfht *ht, |
150 | char *name) | |
3bd1e081 MD |
151 | { |
152 | return NULL; | |
153 | } | |
f6a9efaa | 154 | |
3bd1e081 | 155 | static inline |
f6a9efaa DG |
156 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct cds_lfht *ht, |
157 | char *name) | |
3bd1e081 MD |
158 | { |
159 | return NULL; | |
160 | } | |
f6a9efaa | 161 | |
3bd1e081 MD |
162 | static inline |
163 | struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid, | |
164 | struct lttng_domain *domain) | |
165 | { | |
166 | return NULL; | |
167 | } | |
168 | static inline | |
169 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, | |
170 | char *path) | |
171 | { | |
172 | return NULL; | |
173 | } | |
174 | static inline | |
175 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev) | |
176 | { | |
177 | return NULL; | |
178 | } | |
179 | static inline | |
180 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path) | |
181 | { | |
182 | return NULL; | |
183 | } | |
184 | ||
185 | static inline | |
186 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
187 | { | |
188 | } | |
48842b30 | 189 | |
3bd1e081 MD |
190 | static inline |
191 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata) | |
192 | { | |
193 | } | |
48842b30 | 194 | |
3bd1e081 MD |
195 | static inline |
196 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
197 | { | |
198 | } | |
48842b30 | 199 | |
3bd1e081 MD |
200 | static inline |
201 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
202 | { | |
203 | } | |
34378f76 DG |
204 | static inline |
205 | struct ltt_ust_context *trace_ust_create_context( | |
206 | struct lttng_event_context *ctx) | |
207 | { | |
208 | return NULL; | |
209 | } | |
3bd1e081 | 210 | |
74d0b642 | 211 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
3bd1e081 | 212 | |
97ee3a89 | 213 | #endif /* _LTT_TRACE_UST_H */ |