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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 | ||
22 | #include <limits.h> | |
23 | #include <urcu/list.h> | |
24 | ||
25 | #include <lttng/lttng.h> | |
26 | #include <lttng-ust.h> | |
27 | ||
28 | /* UST event list */ | |
29 | struct ltt_ust_event_list { | |
30 | unsigned int count; | |
31 | struct cds_list_head head; | |
32 | }; | |
33 | ||
34 | /* UST Channel list */ | |
35 | struct ltt_ust_channel_list { | |
36 | unsigned int count; | |
37 | struct cds_list_head head; | |
38 | }; | |
39 | ||
40 | /* UST event */ | |
41 | struct ltt_ust_event { | |
42 | int handle; | |
43 | int enabled; | |
44 | struct lttng_ust_context *ctx; | |
45 | struct lttng_ust_event *event; | |
46 | struct cds_list_head list; | |
47 | }; | |
48 | ||
49 | /* UST channel */ | |
50 | struct ltt_ust_channel { | |
51 | int handle; | |
52 | int enabled; | |
53 | char *name; | |
54 | char *trace_path; /* Trace file path name */ | |
55 | struct lttng_ust_context *ctx; | |
56 | struct lttng_ust_channel *attr; | |
57 | struct ltt_ust_event_list events; | |
58 | struct cds_list_head list; | |
59 | }; | |
60 | ||
61 | /* UST Metadata */ | |
62 | struct ltt_ust_metadata { | |
63 | int handle; | |
64 | char *trace_path; /* Trace file path name */ | |
65 | struct lttng_ust_channel *attr; | |
66 | }; | |
67 | ||
68 | /* UST session */ | |
69 | struct ltt_ust_session { | |
70 | int handle; | |
71 | int enabled; | |
72 | int uconsumer_fds_sent; | |
73 | char *path; | |
74 | struct ltt_ust_metadata *metadata; | |
75 | struct ltt_ust_channel_list channels; | |
76 | }; | |
77 | ||
78 | /* | |
79 | * Lookup functions. NULL is returned if not found. | |
80 | */ | |
81 | struct ltt_ust_event *trace_ust_get_event_by_name( | |
82 | char *name, struct ltt_ust_channel *channel); | |
83 | struct ltt_ust_channel *trace_ust_get_channel_by_name( | |
84 | char *name, struct ltt_ust_session *session); | |
85 | ||
86 | /* | |
87 | * Create functions malloc() the data structure. | |
88 | */ | |
89 | struct ltt_ust_session *trace_ust_create_session(void); | |
90 | struct ltt_ust_channel *trace_ust_create_channel(char *name, char *path, | |
91 | struct lttng_ust_channel *attr); | |
92 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev); | |
93 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path); | |
94 | ||
95 | /* | |
96 | * Destroy functions free() the data structure and remove from linked list if | |
97 | * it's applies. | |
98 | */ | |
99 | void trace_ust_destroy_session(struct ltt_ust_session *session); | |
100 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata); | |
101 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel); | |
102 | void trace_ust_destroy_event(struct ltt_ust_event *event); | |
103 | ||
104 | #endif /* _LTT_TRACE_UST_H */ |