2 * SPDX-License-Identifier: MIT
4 * Copyright 2019 (c) Francis Deslauriers <francis.deslauriers@efficios.com>
7 #ifndef _LTTNG_UST_EVENTS_INTERNAL_H
8 #define _LTTNG_UST_EVENTS_INTERNAL_H
12 #include <urcu/list.h>
13 #include <urcu/hlist.h>
15 #include <lttng/ust-events.h>
17 #include <ust-helper.h>
18 #include "ust-context-provider.h"
20 struct lttng_ust_abi_obj
;
21 struct lttng_event_notifier_group
;
23 union lttng_ust_abi_args
{
33 struct lttng_ust_abi_field_iter entry
;
39 int event_notifier_notif_fd
;
40 } event_notifier_handle
;
49 struct lttng_ust_abi_objd_ops
{
50 long (*cmd
)(int objd
, unsigned int cmd
, unsigned long arg
,
51 union lttng_ust_abi_args
*args
, void *owner
);
52 int (*release
)(int objd
);
55 enum lttng_enabler_format_type
{
56 LTTNG_ENABLER_FORMAT_STAR_GLOB
,
57 LTTNG_ENABLER_FORMAT_EVENT
,
61 * Enabler field, within whatever object is enabling an event. Target of
64 struct lttng_enabler
{
65 enum lttng_enabler_format_type format_type
;
67 /* head list of struct lttng_ust_filter_bytecode_node */
68 struct cds_list_head filter_bytecode_head
;
69 /* head list of struct lttng_ust_excluder_node */
70 struct cds_list_head excluder_head
;
72 struct lttng_ust_abi_event event_param
;
73 unsigned int enabled
:1;
76 struct lttng_event_enabler
{
77 struct lttng_enabler base
;
78 struct cds_list_head node
; /* per-session list of enablers */
79 struct lttng_ust_channel_buffer
*chan
;
81 * Unused, but kept around to make it explicit that the tracer can do
84 struct lttng_ust_ctx
*ctx
;
87 struct lttng_event_notifier_enabler
{
88 struct lttng_enabler base
;
89 uint64_t error_counter_index
;
90 struct cds_list_head node
; /* per-app list of event_notifier enablers */
91 struct cds_list_head capture_bytecode_head
;
92 struct lttng_event_notifier_group
*group
; /* weak ref */
93 uint64_t user_token
; /* User-provided token */
94 uint64_t num_captures
;
97 enum lttng_ust_bytecode_node_type
{
98 LTTNG_UST_BYTECODE_NODE_TYPE_FILTER
,
99 LTTNG_UST_BYTECODE_NODE_TYPE_CAPTURE
,
102 struct lttng_ust_bytecode_node
{
103 enum lttng_ust_bytecode_node_type type
;
104 struct cds_list_head node
;
105 struct lttng_enabler
*enabler
;
108 uint32_t reloc_offset
;
114 struct lttng_ust_excluder_node
{
115 struct cds_list_head node
;
116 struct lttng_enabler
*enabler
;
118 * struct lttng_ust_event_exclusion had variable sized array,
119 * must be last field.
121 struct lttng_ust_abi_event_exclusion excluder
;
124 /* Data structures used by the tracer. */
126 struct tp_list_entry
{
127 struct lttng_ust_abi_tracepoint_iter tp
;
128 struct cds_list_head head
;
131 struct lttng_ust_tracepoint_list
{
132 struct tp_list_entry
*iter
;
133 struct cds_list_head head
;
136 struct tp_field_list_entry
{
137 struct lttng_ust_abi_field_iter field
;
138 struct cds_list_head head
;
141 struct lttng_ust_field_list
{
142 struct tp_field_list_entry
*iter
;
143 struct cds_list_head head
;
147 * Objects in a linked-list of enablers, owned by an event or event_notifier.
148 * This is used because an event (or a event_notifier) can be enabled by more
149 * than one enabler and we want a quick way to iterate over all enablers of an
152 * For example, event rules "my_app:a*" and "my_app:ab*" will both match the
153 * event with the name "my_app:abc".
155 struct lttng_enabler_ref
{
156 struct cds_list_head node
; /* enabler ref list */
157 struct lttng_enabler
*ref
; /* backward ref */
160 #define LTTNG_COUNTER_DIMENSION_MAX 8
161 struct lttng_counter_dimension
{
163 uint64_t underflow_index
;
164 uint64_t overflow_index
;
165 uint8_t has_underflow
;
166 uint8_t has_overflow
;
169 struct lttng_counter_ops
{
170 struct lib_counter
*(*counter_create
)(size_t nr_dimensions
,
171 const struct lttng_counter_dimension
*dimensions
,
172 int64_t global_sum_step
,
173 int global_counter_fd
,
174 int nr_counter_cpu_fds
,
175 const int *counter_cpu_fds
,
177 void (*counter_destroy
)(struct lib_counter
*counter
);
178 int (*counter_add
)(struct lib_counter
*counter
,
179 const size_t *dimension_indexes
, int64_t v
);
180 int (*counter_read
)(struct lib_counter
*counter
,
181 const size_t *dimension_indexes
, int cpu
,
182 int64_t *value
, bool *overflow
, bool *underflow
);
183 int (*counter_aggregate
)(struct lib_counter
*counter
,
184 const size_t *dimension_indexes
, int64_t *value
,
185 bool *overflow
, bool *underflow
);
186 int (*counter_clear
)(struct lib_counter
*counter
, const size_t *dimension_indexes
);
189 struct lttng_counter
{
191 struct lttng_event_notifier_group
*event_notifier_group
; /* owner */
192 struct lttng_counter_transport
*transport
;
193 struct lib_counter
*counter
;
194 struct lttng_counter_ops
*ops
;
197 #define LTTNG_UST_EVENT_HT_BITS 12
198 #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS)
200 struct lttng_ust_event_ht
{
201 struct cds_hlist_head table
[LTTNG_UST_EVENT_HT_SIZE
];
204 #define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12
205 #define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS)
206 struct lttng_ust_event_notifier_ht
{
207 struct cds_hlist_head table
[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE
];
210 #define LTTNG_UST_ENUM_HT_BITS 12
211 #define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS)
213 struct lttng_ust_enum_ht
{
214 struct cds_hlist_head table
[LTTNG_UST_ENUM_HT_SIZE
];
217 struct lttng_event_notifier_group
{
221 struct cds_list_head node
; /* Event notifier group handle list */
222 struct cds_list_head enablers_head
;
223 struct cds_list_head event_notifiers_head
; /* list of event_notifiers */
224 struct lttng_ust_event_notifier_ht event_notifiers_ht
; /* hashtable of event_notifiers */
225 struct lttng_ust_ctx
*ctx
; /* contexts for filters. */
227 struct lttng_counter
*error_counter
;
228 size_t error_counter_len
;
231 struct lttng_transport
{
233 struct cds_list_head node
;
234 struct lttng_ust_channel_ops ops
;
235 const struct lttng_ust_lib_ring_buffer_config
*client_config
;
238 struct lttng_counter_transport
{
240 struct cds_list_head node
;
241 struct lttng_counter_ops ops
;
242 const struct lib_counter_config
*client_config
;
245 struct lttng_ust_event_common_private
{
246 struct lttng_ust_event_common
*pub
; /* Public event interface */
248 struct lttng_ust_event_desc
*desc
;
249 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
250 struct cds_list_head enablers_ref_head
;
251 int registered
; /* has reg'd tracepoint probe */
255 struct lttng_ust_event_recorder_private
{
256 struct lttng_ust_event_common_private parent
;
258 struct lttng_ust_event_recorder
*pub
; /* Public event interface */
259 struct cds_list_head node
; /* Event recorder list */
260 struct cds_hlist_node hlist
; /* Hash table of event recorders */
261 struct lttng_ust_ctx
*ctx
;
264 struct lttng_ust_event_notifier_private
{
265 struct lttng_ust_event_common_private parent
;
267 struct lttng_ust_event_notifier
*pub
; /* Public event notifier interface */
268 struct lttng_event_notifier_group
*group
; /* weak ref */
269 size_t num_captures
; /* Needed to allocate the msgpack array. */
270 uint64_t error_counter_index
;
271 struct cds_list_head node
; /* Event notifier list */
272 struct cds_hlist_node hlist
; /* Hash table of event notifiers */
275 struct lttng_ust_bytecode_runtime_private
{
276 struct bytecode_runtime
*pub
; /* Public bytecode runtime interface */
278 struct lttng_ust_bytecode_node
*bc
;
281 * Pointer to a URCU-protected pointer owned by an `struct
282 * lttng_session`or `struct lttng_event_notifier_group`.
284 struct lttng_ust_ctx
**pctx
;
287 struct lttng_ust_session_private
{
288 struct lttng_ust_session
*pub
; /* Public session interface */
290 int been_active
; /* Been active ? */
291 int objd
; /* Object associated */
292 struct cds_list_head chan_head
; /* Channel list head */
293 struct cds_list_head events_head
; /* list of events */
294 struct cds_list_head node
; /* Session list */
297 /* List of enablers */
298 struct cds_list_head enablers_head
;
299 struct lttng_ust_event_ht events_ht
; /* ht of events */
300 void *owner
; /* object owner */
301 int tstate
:1; /* Transient enable state */
304 int statedump_pending
:1;
307 struct lttng_ust_enum_ht enums_ht
; /* ht of enumerations */
308 struct cds_list_head enums_head
;
309 struct lttng_ust_ctx
*ctx
; /* contexts for filters. */
313 struct lttng_ust_enum_desc
*desc
;
314 struct lttng_ust_session
*session
;
315 struct cds_list_head node
; /* Enum list in session */
316 struct cds_hlist_node hlist
; /* Session ht of enums */
317 uint64_t id
; /* Enumeration ID in sessiond */
320 struct lttng_ust_shm_handle
;
322 struct lttng_ust_channel_ops_private
{
323 struct lttng_ust_channel_ops
*pub
; /* Public channels ops interface */
325 struct lttng_ust_channel_buffer
*(*channel_create
)(const char *name
,
327 size_t subbuf_size
, size_t num_subbuf
,
328 unsigned int switch_timer_interval
,
329 unsigned int read_timer_interval
,
332 const int *stream_fds
, int nr_stream_fds
,
333 int64_t blocking_timeout
);
334 void (*channel_destroy
)(struct lttng_ust_channel_buffer
*chan
);
336 * packet_avail_size returns the available size in the current
337 * packet. Note that the size returned is only a hint, since it
338 * may change due to concurrent writes.
340 size_t (*packet_avail_size
)(struct lttng_ust_lib_ring_buffer_channel
*chan
,
341 struct lttng_ust_shm_handle
*handle
);
342 int (*is_finalized
)(struct lttng_ust_lib_ring_buffer_channel
*chan
);
343 int (*is_disabled
)(struct lttng_ust_lib_ring_buffer_channel
*chan
);
344 int (*flush_buffer
)(struct lttng_ust_lib_ring_buffer_channel
*chan
,
345 struct lttng_ust_shm_handle
*handle
);
348 struct lttng_ust_channel_common_private
{
349 struct lttng_ust_channel_common
*pub
; /* Public channel interface */
351 int objd
; /* Object associated with channel. */
352 int tstate
:1; /* Transient enable state */
355 struct lttng_ust_channel_buffer_private
{
356 struct lttng_ust_channel_common_private parent
;
358 struct lttng_ust_channel_buffer
*pub
; /* Public channel buffer interface */
359 struct cds_list_head node
; /* Channel list in session */
360 int header_type
; /* 0: unset, 1: compact, 2: large */
361 unsigned int id
; /* Channel ID */
362 enum lttng_ust_abi_chan_type type
;
363 struct lttng_ust_ctx
*ctx
;
364 unsigned char uuid
[LTTNG_UST_UUID_LEN
]; /* Trace session unique ID */
368 * IMPORTANT: this structure is part of the ABI between the consumer
369 * daemon and the UST library within traced applications. Changing it
370 * breaks the UST communication protocol.
372 * TODO: remove unused fields on next UST communication protocol
375 struct lttng_ust_abi_channel_config
{
381 struct cds_list_head unused6
;
388 enum lttng_ust_abi_chan_type unused10
;
389 unsigned char uuid
[LTTNG_UST_UUID_LEN
]; /* Trace session unique ID */
394 struct lttng_ust_type_integer
*lttng_ust_get_type_integer(struct lttng_ust_type_common
*type
)
396 if (type
->type
!= lttng_ust_type_integer
)
398 return caa_container_of(type
, struct lttng_ust_type_integer
, parent
);
402 struct lttng_ust_type_float
*lttng_ust_get_type_float(struct lttng_ust_type_common
*type
)
404 if (type
->type
!= lttng_ust_type_float
)
406 return caa_container_of(type
, struct lttng_ust_type_float
, parent
);
410 struct lttng_ust_type_string
*lttng_ust_get_type_string(struct lttng_ust_type_common
*type
)
412 if (type
->type
!= lttng_ust_type_string
)
414 return caa_container_of(type
, struct lttng_ust_type_string
, parent
);
418 struct lttng_ust_type_enum
*lttng_ust_get_type_enum(struct lttng_ust_type_common
*type
)
420 if (type
->type
!= lttng_ust_type_enum
)
422 return caa_container_of(type
, struct lttng_ust_type_enum
, parent
);
426 struct lttng_ust_type_array
*lttng_ust_get_type_array(struct lttng_ust_type_common
*type
)
428 if (type
->type
!= lttng_ust_type_array
)
430 return caa_container_of(type
, struct lttng_ust_type_array
, parent
);
434 struct lttng_ust_type_sequence
*lttng_ust_get_type_sequence(struct lttng_ust_type_common
*type
)
436 if (type
->type
!= lttng_ust_type_sequence
)
438 return caa_container_of(type
, struct lttng_ust_type_sequence
, parent
);
442 struct lttng_ust_type_struct
*lttng_ust_get_type_struct(struct lttng_ust_type_common
*type
)
444 if (type
->type
!= lttng_ust_type_struct
)
446 return caa_container_of(type
, struct lttng_ust_type_struct
, parent
);
449 /* Create dynamically allocated types. */
451 struct lttng_ust_type_common
*lttng_ust_create_type_integer(unsigned int size
,
452 unsigned short alignment
, bool signedness
, unsigned int byte_order
,
455 struct lttng_ust_type_integer
*integer_type
;
457 integer_type
= zmalloc(sizeof(struct lttng_ust_type_integer
));
460 integer_type
->parent
.type
= lttng_ust_type_integer
;
461 integer_type
->struct_size
= sizeof(struct lttng_ust_type_integer
);
462 integer_type
->size
= size
;
463 integer_type
->alignment
= alignment
;
464 integer_type
->signedness
= signedness
;
465 integer_type
->reverse_byte_order
= byte_order
!= BYTE_ORDER
;
466 integer_type
->base
= base
;
467 return (struct lttng_ust_type_common
*) integer_type
;
471 struct lttng_ust_type_common
*lttng_ust_create_type_array_text(unsigned int length
)
473 struct lttng_ust_type_array
*array_type
;
475 array_type
= zmalloc(sizeof(struct lttng_ust_type_array
));
478 array_type
->parent
.type
= lttng_ust_type_array
;
479 array_type
->struct_size
= sizeof(struct lttng_ust_type_array
);
480 array_type
->length
= length
;
481 array_type
->alignment
= 0;
482 array_type
->encoding
= lttng_ust_string_encoding_UTF8
;
483 array_type
->elem_type
= lttng_ust_create_type_integer(sizeof(char) * CHAR_BIT
,
484 lttng_alignof(char) * CHAR_BIT
, lttng_is_signed_type(char),
486 if (!array_type
->elem_type
)
488 return (struct lttng_ust_type_common
*) array_type
;
496 * Destroy dynamically allocated types, including nested types.
497 * For enumerations, it does not free the enumeration mapping description.
500 void lttng_ust_destroy_type(struct lttng_ust_type_common
*type
)
505 switch (type
->type
) {
506 case lttng_ust_type_integer
:
507 case lttng_ust_type_string
:
508 case lttng_ust_type_float
:
509 case lttng_ust_type_dynamic
:
512 case lttng_ust_type_enum
:
514 struct lttng_ust_type_enum
*enum_type
= (struct lttng_ust_type_enum
*) type
;
516 lttng_ust_destroy_type(enum_type
->container_type
);
520 case lttng_ust_type_array
:
522 struct lttng_ust_type_array
*array_type
= (struct lttng_ust_type_array
*) type
;
524 lttng_ust_destroy_type(array_type
->elem_type
);
528 case lttng_ust_type_sequence
:
530 struct lttng_ust_type_sequence
*sequence_type
= (struct lttng_ust_type_sequence
*) type
;
532 lttng_ust_destroy_type(sequence_type
->elem_type
);
536 case lttng_ust_type_struct
:
538 struct lttng_ust_type_struct
*struct_type
= (struct lttng_ust_type_struct
*) type
;
541 for (i
= 0; i
< struct_type
->nr_fields
; i
++)
542 lttng_ust_destroy_type(struct_type
->fields
[i
]->type
);
552 struct lttng_enabler
*lttng_event_enabler_as_enabler(
553 struct lttng_event_enabler
*event_enabler
)
555 return &event_enabler
->base
;
559 struct lttng_enabler
*lttng_event_notifier_enabler_as_enabler(
560 struct lttng_event_notifier_enabler
*event_notifier_enabler
)
562 return &event_notifier_enabler
->base
;
566 * Allocate and initialize a `struct lttng_event_enabler` object.
568 * On success, returns a `struct lttng_event_enabler`,
569 * On memory error, returns NULL.
571 __attribute__((visibility("hidden")))
572 struct lttng_event_enabler
*lttng_event_enabler_create(
573 enum lttng_enabler_format_type format_type
,
574 struct lttng_ust_abi_event
*event_param
,
575 struct lttng_ust_channel_buffer
*chan
);
578 * Destroy a `struct lttng_event_enabler` object.
580 __attribute__((visibility("hidden")))
581 void lttng_event_enabler_destroy(struct lttng_event_enabler
*enabler
);
584 * Enable a `struct lttng_event_enabler` object and all events related to this
587 __attribute__((visibility("hidden")))
588 int lttng_event_enabler_enable(struct lttng_event_enabler
*enabler
);
591 * Disable a `struct lttng_event_enabler` object and all events related to this
594 __attribute__((visibility("hidden")))
595 int lttng_event_enabler_disable(struct lttng_event_enabler
*enabler
);
598 * Attach filter bytecode program to `struct lttng_event_enabler` and all
599 * events related to this enabler.
601 __attribute__((visibility("hidden")))
602 int lttng_event_enabler_attach_filter_bytecode(
603 struct lttng_event_enabler
*enabler
,
604 struct lttng_ust_bytecode_node
**bytecode
);
607 * Attach an application context to an event enabler.
611 __attribute__((visibility("hidden")))
612 int lttng_event_enabler_attach_context(struct lttng_event_enabler
*enabler
,
613 struct lttng_ust_abi_context
*ctx
);
616 * Attach exclusion list to `struct lttng_event_enabler` and all
617 * events related to this enabler.
619 __attribute__((visibility("hidden")))
620 int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler
*enabler
,
621 struct lttng_ust_excluder_node
**excluder
);
624 * Synchronize bytecodes for the enabler and the instance (event or
627 * This function goes over all bytecode programs of the enabler (event or
628 * event_notifier enabler) to ensure each is linked to the provided instance.
630 __attribute__((visibility("hidden")))
631 void lttng_enabler_link_bytecode(struct lttng_ust_event_desc
*event_desc
,
632 struct lttng_ust_ctx
**ctx
,
633 struct cds_list_head
*instance_bytecode_runtime_head
,
634 struct cds_list_head
*enabler_bytecode_runtime_head
);
637 * Allocate and initialize a `struct lttng_event_notifier_group` object.
639 * On success, returns a `struct lttng_triggre_group`,
640 * on memory error, returns NULL.
642 __attribute__((visibility("hidden")))
643 struct lttng_event_notifier_group
*lttng_event_notifier_group_create(void);
646 * Destroy a `struct lttng_event_notifier_group` object.
648 __attribute__((visibility("hidden")))
649 void lttng_event_notifier_group_destroy(
650 struct lttng_event_notifier_group
*event_notifier_group
);
653 * Allocate and initialize a `struct lttng_event_notifier_enabler` object.
655 * On success, returns a `struct lttng_event_notifier_enabler`,
656 * On memory error, returns NULL.
658 __attribute__((visibility("hidden")))
659 struct lttng_event_notifier_enabler
*lttng_event_notifier_enabler_create(
660 struct lttng_event_notifier_group
*event_notifier_group
,
661 enum lttng_enabler_format_type format_type
,
662 struct lttng_ust_abi_event_notifier
*event_notifier_param
);
665 * Destroy a `struct lttng_event_notifier_enabler` object.
667 __attribute__((visibility("hidden")))
668 void lttng_event_notifier_enabler_destroy(
669 struct lttng_event_notifier_enabler
*event_notifier_enabler
);
672 * Enable a `struct lttng_event_notifier_enabler` object and all event
673 * notifiers related to this enabler.
675 __attribute__((visibility("hidden")))
676 int lttng_event_notifier_enabler_enable(
677 struct lttng_event_notifier_enabler
*event_notifier_enabler
);
680 * Disable a `struct lttng_event_notifier_enabler` object and all event
681 * notifiers related to this enabler.
683 __attribute__((visibility("hidden")))
684 int lttng_event_notifier_enabler_disable(
685 struct lttng_event_notifier_enabler
*event_notifier_enabler
);
688 * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and
689 * all event notifiers related to this enabler.
691 __attribute__((visibility("hidden")))
692 int lttng_event_notifier_enabler_attach_filter_bytecode(
693 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
694 struct lttng_ust_bytecode_node
**bytecode
);
697 * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and
698 * all event_notifiers related to this enabler.
700 __attribute__((visibility("hidden")))
701 int lttng_event_notifier_enabler_attach_capture_bytecode(
702 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
703 struct lttng_ust_bytecode_node
**bytecode
);
706 * Attach exclusion list to `struct lttng_event_notifier_enabler` and all
707 * event notifiers related to this enabler.
709 __attribute__((visibility("hidden")))
710 int lttng_event_notifier_enabler_attach_exclusion(
711 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
712 struct lttng_ust_excluder_node
**excluder
);
714 __attribute__((visibility("hidden")))
715 void lttng_free_event_filter_runtime(struct lttng_ust_event_common
*event
);
718 * Connect the probe on all enablers matching this event description.
719 * Called on library load.
721 __attribute__((visibility("hidden")))
722 int lttng_fix_pending_event_notifiers(void);
724 __attribute__((visibility("hidden")))
725 struct lttng_counter
*lttng_ust_counter_create(
726 const char *counter_transport_name
,
727 size_t number_dimensions
, const struct lttng_counter_dimension
*dimensions
);
729 #ifdef HAVE_PERF_EVENT
731 __attribute__((visibility("hidden")))
732 int lttng_add_perf_counter_to_ctx(uint32_t type
,
735 struct lttng_ust_ctx
**ctx
);
737 __attribute__((visibility("hidden")))
738 int lttng_perf_counter_init(void);
740 __attribute__((visibility("hidden")))
741 void lttng_perf_counter_exit(void);
743 #else /* #ifdef HAVE_PERF_EVENT */
746 int lttng_add_perf_counter_to_ctx(uint32_t type
,
749 struct lttng_ust_ctx
**ctx
)
754 int lttng_perf_counter_init(void)
759 void lttng_perf_counter_exit(void)
762 #endif /* #else #ifdef HAVE_PERF_EVENT */
764 __attribute__((visibility("hidden")))
765 int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list
*list
);
767 __attribute__((visibility("hidden")))
768 void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list
*list
);
770 __attribute__((visibility("hidden")))
771 int lttng_probes_get_field_list(struct lttng_ust_field_list
*list
);
773 __attribute__((visibility("hidden")))
774 void lttng_probes_prune_field_list(struct lttng_ust_field_list
*list
);
776 __attribute__((visibility("hidden")))
777 struct lttng_ust_abi_tracepoint_iter
*
778 lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list
*list
);
780 __attribute__((visibility("hidden")))
781 struct lttng_ust_abi_field_iter
*
782 lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list
*list
);
784 __attribute__((visibility("hidden")))
785 struct lttng_ust_session
*lttng_session_create(void);
787 __attribute__((visibility("hidden")))
788 int lttng_session_enable(struct lttng_ust_session
*session
);
790 __attribute__((visibility("hidden")))
791 int lttng_session_disable(struct lttng_ust_session
*session
);
793 __attribute__((visibility("hidden")))
794 int lttng_session_statedump(struct lttng_ust_session
*session
);
796 __attribute__((visibility("hidden")))
797 void lttng_session_destroy(struct lttng_ust_session
*session
);
800 * Called with ust lock held.
802 __attribute__((visibility("hidden")))
803 int lttng_session_active(void);
805 __attribute__((visibility("hidden")))
806 struct cds_list_head
*lttng_get_sessions(void);
808 __attribute__((visibility("hidden")))
809 void lttng_handle_pending_statedump(void *owner
);
811 __attribute__((visibility("hidden")))
812 int lttng_channel_enable(struct lttng_ust_channel_common
*lttng_channel
);
814 __attribute__((visibility("hidden")))
815 int lttng_channel_disable(struct lttng_ust_channel_common
*lttng_channel
);
817 __attribute__((visibility("hidden")))
818 void lttng_transport_register(struct lttng_transport
*transport
);
820 __attribute__((visibility("hidden")))
821 void lttng_transport_unregister(struct lttng_transport
*transport
);
823 /* This is ABI between liblttng-ust and liblttng-ust-ctl */
824 struct lttng_transport
*lttng_ust_transport_find(const char *name
);
826 /* This is ABI between liblttng-ust and liblttng-ust-dl */
827 void lttng_ust_dl_update(void *ip
);
829 __attribute__((visibility("hidden")))
830 void lttng_probe_provider_unregister_events(struct lttng_ust_probe_desc
*desc
);
832 __attribute__((visibility("hidden")))
833 int lttng_fix_pending_events(void);
835 __attribute__((visibility("hidden")))
836 struct cds_list_head
*lttng_get_probe_list_head(void);
838 __attribute__((visibility("hidden")))
839 struct lttng_enum
*lttng_ust_enum_get_from_desc(struct lttng_ust_session
*session
,
840 struct lttng_ust_enum_desc
*enum_desc
);
842 __attribute__((visibility("hidden")))
843 int lttng_abi_create_root_handle(void);
845 __attribute__((visibility("hidden")))
846 const struct lttng_ust_abi_objd_ops
*lttng_ust_abi_objd_ops(int id
);
848 __attribute__((visibility("hidden")))
849 int lttng_ust_abi_objd_unref(int id
, int is_owner
);
851 __attribute__((visibility("hidden")))
852 void lttng_ust_abi_exit(void);
854 __attribute__((visibility("hidden")))
855 void lttng_ust_abi_events_exit(void);
857 __attribute__((visibility("hidden")))
858 void lttng_ust_abi_objd_table_owner_cleanup(void *owner
);
860 __attribute__((visibility("hidden")))
861 struct lttng_ust_channel_buffer
*lttng_ust_alloc_channel_buffer(void);
863 __attribute__((visibility("hidden")))
864 void lttng_ust_free_channel_common(struct lttng_ust_channel_common
*chan
);
866 #endif /* _LTTNG_UST_EVENTS_INTERNAL_H */