1 #ifndef _LTTNG_UST_CONTEXT_PROVIDER_H
2 #define _LTTNG_UST_CONTEXT_PROVIDER_H
5 * Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
27 #include <lttng/ust-events.h>
28 #include <urcu/hlist.h>
30 struct lttng_ust_context_provider
{
32 size_t (*get_size
)(struct lttng_ctx_field
*field
, size_t offset
);
33 void (*record
)(struct lttng_ctx_field
*field
,
34 struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
35 struct lttng_channel
*chan
);
36 void (*get_value
)(struct lttng_ctx_field
*field
,
37 struct lttng_ctx_value
*value
);
38 struct cds_hlist_node node
;
41 int lttng_ust_context_provider_register(struct lttng_ust_context_provider
*provider
);
42 void lttng_ust_context_provider_unregister(struct lttng_ust_context_provider
*provider
);
44 int lttng_context_is_app(const char *name
);
46 void lttng_ust_context_set_session_provider(const char *name
,
47 size_t (*get_size
)(struct lttng_ctx_field
*field
, size_t offset
),
48 void (*record
)(struct lttng_ctx_field
*field
,
49 struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
50 struct lttng_channel
*chan
),
51 void (*get_value
)(struct lttng_ctx_field
*field
,
52 struct lttng_ctx_value
*value
));
54 int lttng_ust_add_app_context_to_ctx_rcu(const char *name
, struct lttng_ctx
**ctx
);
55 int lttng_ust_context_set_provider_rcu(struct lttng_ctx
**_ctx
,
57 size_t (*get_size
)(struct lttng_ctx_field
*field
, size_t offset
),
58 void (*record
)(struct lttng_ctx_field
*field
,
59 struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
60 struct lttng_channel
*chan
),
61 void (*get_value
)(struct lttng_ctx_field
*field
,
62 struct lttng_ctx_value
*value
));
63 int lttng_context_add_rcu(struct lttng_ctx
**ctx_p
,
64 const struct lttng_ctx_field
*f
);
66 #endif /* _LTTNG_UST_CONTEXT_PROVIDER_H */