2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
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
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.
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.
19 #ifndef _LTT_TRACE_UST_H
20 #define _LTT_TRACE_UST_H
25 #include <urcu/list.h>
26 #include <lttng/lttng.h>
30 #include "../hashtable/rculfhash.h"
33 struct ltt_ust_stream_list
{
35 struct cds_list_head head
;
38 /* Context hash table nodes */
39 struct ltt_ust_context
{
40 struct lttng_ust_context ctx
;
41 struct cds_lfht_node node
;
45 struct ltt_ust_event
{
46 struct lttng_ust_event attr
;
48 struct cds_lfht_node node
;
52 struct ltt_ust_stream
{
54 char pathname
[PATH_MAX
];
55 struct object_data
*obj
;
56 struct cds_lfht_node node
;
60 struct ltt_ust_channel
{
61 char name
[LTTNG_UST_SYM_NAME_LEN
];
62 char pathname
[PATH_MAX
];
63 struct lttng_ust_channel attr
;
65 struct cds_lfht
*events
;
66 struct cds_lfht_node node
;
70 struct ltt_ust_metadata
{
72 struct object_data
*obj
;
73 char pathname
[PATH_MAX
]; /* Trace file path name */
74 struct lttng_ust_channel attr
;
75 struct object_data
*stream_obj
;
78 /* UST domain global (LTTNG_DOMAIN_UST) */
79 struct ltt_ust_domain_global
{
80 struct cds_lfht
*channels
;
83 /* UST domain pid (LTTNG_DOMAIN_UST_PID) */
84 struct ltt_ust_domain_pid
{
86 struct cds_lfht
*channels
;
87 struct cds_lfht_node node
;
90 /* UST domain exec name (LTTNG_DOMAIN_UST_EXEC_NAME) */
91 struct ltt_ust_domain_exec
{
92 char exec_name
[LTTNG_UST_SYM_NAME_LEN
];
93 struct cds_lfht
*channels
;
94 struct cds_lfht_node node
;
98 struct ltt_ust_session
{
99 int uid
; /* Unique identifier of session */
100 int consumer_fds_sent
;
102 char pathname
[PATH_MAX
];
103 struct ltt_ust_domain_global domain_global
;
105 * Those two hash tables contains data for a specific UST domain and each
106 * contains a HT of channels. See ltt_ust_domain_exec and
107 * ltt_ust_domain_pid data structures.
109 struct cds_lfht
*domain_pid
;
110 struct cds_lfht
*domain_exec
;
113 #ifdef CONFIG_LTTNG_TOOLS_HAVE_UST
116 * Lookup functions. NULL is returned if not found.
118 struct ltt_ust_event
*trace_ust_find_event_by_name(struct cds_lfht
*ht
,
120 struct ltt_ust_channel
*trace_ust_find_channel_by_name(struct cds_lfht
*ht
,
124 * Create functions malloc() the data structure.
126 struct ltt_ust_session
*trace_ust_create_session(char *path
, unsigned int uid
,
127 struct lttng_domain
*domain
);
128 struct ltt_ust_channel
*trace_ust_create_channel(struct lttng_channel
*attr
,
130 struct ltt_ust_event
*trace_ust_create_event(struct lttng_event
*ev
);
131 struct ltt_ust_metadata
*trace_ust_create_metadata(char *path
);
134 * Destroy functions free() the data structure and remove from linked list if
137 void trace_ust_destroy_session(struct ltt_ust_session
*session
);
138 void trace_ust_destroy_metadata(struct ltt_ust_metadata
*metadata
);
139 void trace_ust_destroy_channel(struct ltt_ust_channel
*channel
);
140 void trace_ust_destroy_event(struct ltt_ust_event
*event
);
145 struct ltt_ust_event
*trace_ust_find_event_by_name(struct cds_lfht
*ht
,
152 struct ltt_ust_channel
*trace_ust_find_channel_by_name(struct cds_lfht
*ht
,
159 struct ltt_ust_session
*trace_ust_create_session(char *path
, pid_t pid
,
160 struct lttng_domain
*domain
)
165 struct ltt_ust_channel
*trace_ust_create_channel(struct lttng_channel
*attr
,
171 struct ltt_ust_event
*trace_ust_create_event(struct lttng_event
*ev
)
176 struct ltt_ust_metadata
*trace_ust_create_metadata(char *path
)
182 void trace_ust_destroy_session(struct ltt_ust_session
*session
)
187 void trace_ust_destroy_metadata(struct ltt_ust_metadata
*metadata
)
192 void trace_ust_destroy_channel(struct ltt_ust_channel
*channel
)
197 void trace_ust_destroy_event(struct ltt_ust_event
*event
)
201 #endif /* CONFIG_CONFIG_LTTNG_TOOLS_HAVE_UST */
203 #endif /* _LTT_TRACE_UST_H */