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
13 #include <urcu/list.h>
14 #include <urcu/hlist.h>
16 #include <lttng/ust-events.h>
18 #include <ust-helper.h>
19 #include "ust-context-provider.h"
21 struct lttng_ust_abi_obj
;
22 struct lttng_event_notifier_group
;
24 union lttng_ust_abi_args
{
34 struct lttng_ust_abi_field_iter entry
;
40 int event_notifier_notif_fd
;
41 } event_notifier_handle
;
50 struct lttng_ust_abi_objd_ops
{
51 long (*cmd
)(int objd
, unsigned int cmd
, unsigned long arg
,
52 union lttng_ust_abi_args
*args
, void *owner
);
53 int (*release
)(int objd
);
56 enum lttng_enabler_format_type
{
57 LTTNG_ENABLER_FORMAT_STAR_GLOB
,
58 LTTNG_ENABLER_FORMAT_EVENT
,
62 * Enabler field, within whatever object is enabling an event. Target of
65 struct lttng_enabler
{
66 enum lttng_enabler_format_type format_type
;
68 /* head list of struct lttng_ust_filter_bytecode_node */
69 struct cds_list_head filter_bytecode_head
;
70 /* head list of struct lttng_ust_excluder_node */
71 struct cds_list_head excluder_head
;
73 struct lttng_ust_abi_event event_param
;
74 unsigned int enabled
:1;
77 struct lttng_event_enabler
{
78 struct lttng_enabler base
;
79 struct cds_list_head node
; /* per-session list of enablers */
80 struct lttng_ust_channel_buffer
*chan
;
82 * Unused, but kept around to make it explicit that the tracer can do
85 struct lttng_ust_ctx
*ctx
;
88 struct lttng_event_notifier_enabler
{
89 struct lttng_enabler base
;
90 uint64_t error_counter_index
;
91 struct cds_list_head node
; /* per-app list of event_notifier enablers */
92 struct cds_list_head capture_bytecode_head
;
93 struct lttng_event_notifier_group
*group
; /* weak ref */
94 uint64_t user_token
; /* User-provided token */
95 uint64_t num_captures
;
98 enum lttng_ust_bytecode_type
{
99 LTTNG_UST_BYTECODE_TYPE_FILTER
,
100 LTTNG_UST_BYTECODE_TYPE_CAPTURE
,
103 struct lttng_ust_bytecode_node
{
104 enum lttng_ust_bytecode_type type
;
105 struct cds_list_head node
;
106 struct lttng_enabler
*enabler
;
109 uint32_t reloc_offset
;
116 * Bytecode interpreter return value.
118 enum lttng_ust_bytecode_interpreter_ret
{
119 LTTNG_UST_BYTECODE_INTERPRETER_ERROR
= -1,
120 LTTNG_UST_BYTECODE_INTERPRETER_OK
= 0,
123 struct lttng_interpreter_output
;
124 struct lttng_ust_bytecode_runtime_private
;
126 enum lttng_ust_bytecode_filter_result
{
127 LTTNG_UST_BYTECODE_FILTER_ACCEPT
= 0,
128 LTTNG_UST_BYTECODE_FILTER_REJECT
= 1,
131 struct lttng_ust_bytecode_filter_ctx
{
132 enum lttng_ust_bytecode_filter_result result
;
135 struct lttng_ust_excluder_node
{
136 struct cds_list_head node
;
137 struct lttng_enabler
*enabler
;
139 * struct lttng_ust_event_exclusion had variable sized array,
140 * must be last field.
142 struct lttng_ust_abi_event_exclusion excluder
;
145 /* Data structures used by the tracer. */
147 struct tp_list_entry
{
148 struct lttng_ust_abi_tracepoint_iter tp
;
149 struct cds_list_head head
;
152 struct lttng_ust_tracepoint_list
{
153 struct tp_list_entry
*iter
;
154 struct cds_list_head head
;
157 struct tp_field_list_entry
{
158 struct lttng_ust_abi_field_iter field
;
159 struct cds_list_head head
;
162 struct lttng_ust_field_list
{
163 struct tp_field_list_entry
*iter
;
164 struct cds_list_head head
;
168 * Objects in a linked-list of enablers, owned by an event or event_notifier.
169 * This is used because an event (or a event_notifier) can be enabled by more
170 * than one enabler and we want a quick way to iterate over all enablers of an
173 * For example, event rules "my_app:a*" and "my_app:ab*" will both match the
174 * event with the name "my_app:abc".
176 struct lttng_enabler_ref
{
177 struct cds_list_head node
; /* enabler ref list */
178 struct lttng_enabler
*ref
; /* backward ref */
181 #define LTTNG_COUNTER_DIMENSION_MAX 8
182 struct lttng_counter_dimension
{
184 uint64_t underflow_index
;
185 uint64_t overflow_index
;
186 uint8_t has_underflow
;
187 uint8_t has_overflow
;
190 struct lttng_counter_ops
{
191 struct lib_counter
*(*counter_create
)(size_t nr_dimensions
,
192 const struct lttng_counter_dimension
*dimensions
,
193 int64_t global_sum_step
,
194 int global_counter_fd
,
195 int nr_counter_cpu_fds
,
196 const int *counter_cpu_fds
,
198 void (*counter_destroy
)(struct lib_counter
*counter
);
199 int (*counter_add
)(struct lib_counter
*counter
,
200 const size_t *dimension_indexes
, int64_t v
);
201 int (*counter_read
)(struct lib_counter
*counter
,
202 const size_t *dimension_indexes
, int cpu
,
203 int64_t *value
, bool *overflow
, bool *underflow
);
204 int (*counter_aggregate
)(struct lib_counter
*counter
,
205 const size_t *dimension_indexes
, int64_t *value
,
206 bool *overflow
, bool *underflow
);
207 int (*counter_clear
)(struct lib_counter
*counter
, const size_t *dimension_indexes
);
210 struct lttng_counter
{
212 struct lttng_event_notifier_group
*event_notifier_group
; /* owner */
213 struct lttng_counter_transport
*transport
;
214 struct lib_counter
*counter
;
215 struct lttng_counter_ops
*ops
;
218 #define LTTNG_UST_EVENT_HT_BITS 12
219 #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS)
221 struct lttng_ust_event_ht
{
222 struct cds_hlist_head table
[LTTNG_UST_EVENT_HT_SIZE
];
225 #define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12
226 #define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS)
227 struct lttng_ust_event_notifier_ht
{
228 struct cds_hlist_head table
[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE
];
231 #define LTTNG_UST_ENUM_HT_BITS 12
232 #define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS)
234 struct lttng_ust_enum_ht
{
235 struct cds_hlist_head table
[LTTNG_UST_ENUM_HT_SIZE
];
238 struct lttng_event_notifier_group
{
242 struct cds_list_head node
; /* Event notifier group handle list */
243 struct cds_list_head enablers_head
;
244 struct cds_list_head event_notifiers_head
; /* list of event_notifiers */
245 struct lttng_ust_event_notifier_ht event_notifiers_ht
; /* hashtable of event_notifiers */
246 struct lttng_ust_ctx
*ctx
; /* contexts for filters. */
248 struct lttng_counter
*error_counter
;
249 size_t error_counter_len
;
252 struct lttng_transport
{
254 struct cds_list_head node
;
255 struct lttng_ust_channel_buffer_ops ops
;
256 const struct lttng_ust_lib_ring_buffer_config
*client_config
;
259 struct lttng_counter_transport
{
261 struct cds_list_head node
;
262 struct lttng_counter_ops ops
;
263 const struct lib_counter_config
*client_config
;
266 struct lttng_ust_event_common_private
{
267 struct lttng_ust_event_common
*pub
; /* Public event interface */
269 struct lttng_ust_event_desc
*desc
;
270 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
271 struct cds_list_head enablers_ref_head
;
272 int registered
; /* has reg'd tracepoint probe */
275 int has_enablers_without_filter_bytecode
;
276 /* list of struct lttng_ust_bytecode_runtime, sorted by seqnum */
277 struct cds_list_head filter_bytecode_runtime_head
;
280 struct lttng_ust_event_recorder_private
{
281 struct lttng_ust_event_common_private parent
;
283 struct lttng_ust_event_recorder
*pub
; /* Public event interface */
284 struct cds_list_head node
; /* Event recorder list */
285 struct cds_hlist_node hlist
; /* Hash table of event recorders */
286 struct lttng_ust_ctx
*ctx
;
290 struct lttng_ust_event_notifier_private
{
291 struct lttng_ust_event_common_private parent
;
293 struct lttng_ust_event_notifier
*pub
; /* Public event notifier interface */
294 struct lttng_event_notifier_group
*group
; /* weak ref */
295 size_t num_captures
; /* Needed to allocate the msgpack array. */
296 uint64_t error_counter_index
;
297 struct cds_list_head node
; /* Event notifier list */
298 struct cds_hlist_node hlist
; /* Hash table of event notifiers */
299 struct cds_list_head capture_bytecode_runtime_head
;
302 struct lttng_ust_bytecode_runtime
{
303 enum lttng_ust_bytecode_type type
;
304 struct lttng_ust_bytecode_node
*bc
;
306 int (*interpreter_func
)(struct lttng_ust_bytecode_runtime
*bytecode_runtime
,
307 const char *interpreter_stack_data
,
309 struct cds_list_head node
; /* list of bytecode runtime in event */
311 * Pointer to a URCU-protected pointer owned by an `struct
312 * lttng_session`or `struct lttng_event_notifier_group`.
314 struct lttng_ust_ctx
**pctx
;
317 struct lttng_ust_session_private
{
318 struct lttng_ust_session
*pub
; /* Public session interface */
320 int been_active
; /* Been active ? */
321 int objd
; /* Object associated */
322 struct cds_list_head chan_head
; /* Channel list head */
323 struct cds_list_head events_head
; /* list of events */
324 struct cds_list_head node
; /* Session list */
326 /* List of enablers */
327 struct cds_list_head enablers_head
;
328 struct lttng_ust_event_ht events_ht
; /* ht of events */
329 void *owner
; /* object owner */
330 int tstate
:1; /* Transient enable state */
332 int statedump_pending
:1;
334 struct lttng_ust_enum_ht enums_ht
; /* ht of enumerations */
335 struct cds_list_head enums_head
;
336 struct lttng_ust_ctx
*ctx
; /* contexts for filters. */
338 unsigned char uuid
[LTTNG_UST_UUID_LEN
]; /* Trace session unique ID */
339 bool uuid_set
; /* Is uuid set ? */
343 struct lttng_ust_enum_desc
*desc
;
344 struct lttng_ust_session
*session
;
345 struct cds_list_head node
; /* Enum list in session */
346 struct cds_hlist_node hlist
; /* Session ht of enums */
347 uint64_t id
; /* Enumeration ID in sessiond */
350 struct lttng_ust_shm_handle
;
352 struct lttng_ust_channel_buffer_ops_private
{
353 struct lttng_ust_channel_buffer_ops
*pub
; /* Public channel buffer ops interface */
355 struct lttng_ust_channel_buffer
*(*channel_create
)(const char *name
,
357 size_t subbuf_size
, size_t num_subbuf
,
358 unsigned int switch_timer_interval
,
359 unsigned int read_timer_interval
,
362 const int *stream_fds
, int nr_stream_fds
,
363 int64_t blocking_timeout
);
364 void (*channel_destroy
)(struct lttng_ust_channel_buffer
*chan
);
366 * packet_avail_size returns the available size in the current
367 * packet. Note that the size returned is only a hint, since it
368 * may change due to concurrent writes.
370 size_t (*packet_avail_size
)(struct lttng_ust_channel_buffer
*chan
);
371 int (*is_finalized
)(struct lttng_ust_channel_buffer
*chan
);
372 int (*is_disabled
)(struct lttng_ust_channel_buffer
*chan
);
373 int (*flush_buffer
)(struct lttng_ust_channel_buffer
*chan
);
376 struct lttng_ust_channel_common_private
{
377 struct lttng_ust_channel_common
*pub
; /* Public channel interface */
379 int objd
; /* Object associated with channel. */
380 int tstate
:1; /* Transient enable state */
383 struct lttng_ust_channel_buffer_private
{
384 struct lttng_ust_channel_common_private parent
;
386 struct lttng_ust_channel_buffer
*pub
; /* Public channel buffer interface */
387 struct cds_list_head node
; /* Channel list in session */
388 int header_type
; /* 0: unset, 1: compact, 2: large */
389 unsigned int id
; /* Channel ID */
390 enum lttng_ust_abi_chan_type type
;
391 struct lttng_ust_ctx
*ctx
;
392 struct lttng_ust_lib_ring_buffer_channel
*rb_chan
; /* Ring buffer channel */
393 unsigned char uuid
[LTTNG_UST_UUID_LEN
]; /* Trace session unique ID */
397 * IMPORTANT: this structure is part of the ABI between the consumer
398 * daemon and the UST library within traced applications. Changing it
399 * breaks the UST communication protocol.
401 * TODO: remove unused fields on next UST communication protocol
404 struct lttng_ust_abi_channel_config
{
410 struct cds_list_head unused6
;
417 enum lttng_ust_abi_chan_type unused10
;
418 unsigned char uuid
[LTTNG_UST_UUID_LEN
]; /* Trace session unique ID */
423 struct lttng_ust_type_integer
*lttng_ust_get_type_integer(struct lttng_ust_type_common
*type
)
425 if (type
->type
!= lttng_ust_type_integer
)
427 return caa_container_of(type
, struct lttng_ust_type_integer
, parent
);
431 struct lttng_ust_type_float
*lttng_ust_get_type_float(struct lttng_ust_type_common
*type
)
433 if (type
->type
!= lttng_ust_type_float
)
435 return caa_container_of(type
, struct lttng_ust_type_float
, parent
);
439 struct lttng_ust_type_string
*lttng_ust_get_type_string(struct lttng_ust_type_common
*type
)
441 if (type
->type
!= lttng_ust_type_string
)
443 return caa_container_of(type
, struct lttng_ust_type_string
, parent
);
447 struct lttng_ust_type_enum
*lttng_ust_get_type_enum(struct lttng_ust_type_common
*type
)
449 if (type
->type
!= lttng_ust_type_enum
)
451 return caa_container_of(type
, struct lttng_ust_type_enum
, parent
);
455 struct lttng_ust_type_array
*lttng_ust_get_type_array(struct lttng_ust_type_common
*type
)
457 if (type
->type
!= lttng_ust_type_array
)
459 return caa_container_of(type
, struct lttng_ust_type_array
, parent
);
463 struct lttng_ust_type_sequence
*lttng_ust_get_type_sequence(struct lttng_ust_type_common
*type
)
465 if (type
->type
!= lttng_ust_type_sequence
)
467 return caa_container_of(type
, struct lttng_ust_type_sequence
, parent
);
471 struct lttng_ust_type_struct
*lttng_ust_get_type_struct(struct lttng_ust_type_common
*type
)
473 if (type
->type
!= lttng_ust_type_struct
)
475 return caa_container_of(type
, struct lttng_ust_type_struct
, parent
);
478 /* Create dynamically allocated types. */
480 struct lttng_ust_type_common
*lttng_ust_create_type_integer(unsigned int size
,
481 unsigned short alignment
, bool signedness
, unsigned int byte_order
,
484 struct lttng_ust_type_integer
*integer_type
;
486 integer_type
= zmalloc(sizeof(struct lttng_ust_type_integer
));
489 integer_type
->parent
.type
= lttng_ust_type_integer
;
490 integer_type
->struct_size
= sizeof(struct lttng_ust_type_integer
);
491 integer_type
->size
= size
;
492 integer_type
->alignment
= alignment
;
493 integer_type
->signedness
= signedness
;
494 integer_type
->reverse_byte_order
= byte_order
!= BYTE_ORDER
;
495 integer_type
->base
= base
;
496 return (struct lttng_ust_type_common
*) integer_type
;
500 struct lttng_ust_type_common
*lttng_ust_create_type_array_text(unsigned int length
)
502 struct lttng_ust_type_array
*array_type
;
504 array_type
= zmalloc(sizeof(struct lttng_ust_type_array
));
507 array_type
->parent
.type
= lttng_ust_type_array
;
508 array_type
->struct_size
= sizeof(struct lttng_ust_type_array
);
509 array_type
->length
= length
;
510 array_type
->alignment
= 0;
511 array_type
->encoding
= lttng_ust_string_encoding_UTF8
;
512 array_type
->elem_type
= lttng_ust_create_type_integer(sizeof(char) * CHAR_BIT
,
513 lttng_ust_rb_alignof(char) * CHAR_BIT
, lttng_ust_is_signed_type(char),
515 if (!array_type
->elem_type
)
517 return (struct lttng_ust_type_common
*) array_type
;
525 * Destroy dynamically allocated types, including nested types.
526 * For enumerations, it does not free the enumeration mapping description.
529 void lttng_ust_destroy_type(struct lttng_ust_type_common
*type
)
534 switch (type
->type
) {
535 case lttng_ust_type_integer
:
536 case lttng_ust_type_string
:
537 case lttng_ust_type_float
:
538 case lttng_ust_type_dynamic
:
541 case lttng_ust_type_enum
:
543 struct lttng_ust_type_enum
*enum_type
= (struct lttng_ust_type_enum
*) type
;
545 lttng_ust_destroy_type(enum_type
->container_type
);
549 case lttng_ust_type_array
:
551 struct lttng_ust_type_array
*array_type
= (struct lttng_ust_type_array
*) type
;
553 lttng_ust_destroy_type(array_type
->elem_type
);
557 case lttng_ust_type_sequence
:
559 struct lttng_ust_type_sequence
*sequence_type
= (struct lttng_ust_type_sequence
*) type
;
561 lttng_ust_destroy_type(sequence_type
->elem_type
);
565 case lttng_ust_type_struct
:
567 struct lttng_ust_type_struct
*struct_type
= (struct lttng_ust_type_struct
*) type
;
570 for (i
= 0; i
< struct_type
->nr_fields
; i
++)
571 lttng_ust_destroy_type(struct_type
->fields
[i
]->type
);
581 struct lttng_enabler
*lttng_event_enabler_as_enabler(
582 struct lttng_event_enabler
*event_enabler
)
584 return &event_enabler
->base
;
588 struct lttng_enabler
*lttng_event_notifier_enabler_as_enabler(
589 struct lttng_event_notifier_enabler
*event_notifier_enabler
)
591 return &event_notifier_enabler
->base
;
595 * Allocate and initialize a `struct lttng_event_enabler` object.
597 * On success, returns a `struct lttng_event_enabler`,
598 * On memory error, returns NULL.
600 struct lttng_event_enabler
*lttng_event_enabler_create(
601 enum lttng_enabler_format_type format_type
,
602 struct lttng_ust_abi_event
*event_param
,
603 struct lttng_ust_channel_buffer
*chan
)
604 __attribute__((visibility("hidden")));
607 * Destroy a `struct lttng_event_enabler` object.
609 void lttng_event_enabler_destroy(struct lttng_event_enabler
*enabler
)
610 __attribute__((visibility("hidden")));
613 * Enable a `struct lttng_event_enabler` object and all events related to this
616 int lttng_event_enabler_enable(struct lttng_event_enabler
*enabler
)
617 __attribute__((visibility("hidden")));
620 * Disable a `struct lttng_event_enabler` object and all events related to this
623 int lttng_event_enabler_disable(struct lttng_event_enabler
*enabler
)
624 __attribute__((visibility("hidden")));
627 * Attach filter bytecode program to `struct lttng_event_enabler` and all
628 * events related to this enabler.
630 int lttng_event_enabler_attach_filter_bytecode(
631 struct lttng_event_enabler
*enabler
,
632 struct lttng_ust_bytecode_node
**bytecode
)
633 __attribute__((visibility("hidden")));
636 * Attach an application context to an event enabler.
640 int lttng_event_enabler_attach_context(struct lttng_event_enabler
*enabler
,
641 struct lttng_ust_abi_context
*ctx
)
642 __attribute__((visibility("hidden")));
645 * Attach exclusion list to `struct lttng_event_enabler` and all
646 * events related to this enabler.
648 int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler
*enabler
,
649 struct lttng_ust_excluder_node
**excluder
)
650 __attribute__((visibility("hidden")));
653 * Synchronize bytecodes for the enabler and the instance (event or
656 * This function goes over all bytecode programs of the enabler (event or
657 * event_notifier enabler) to ensure each is linked to the provided instance.
659 void lttng_enabler_link_bytecode(struct lttng_ust_event_desc
*event_desc
,
660 struct lttng_ust_ctx
**ctx
,
661 struct cds_list_head
*instance_bytecode_runtime_head
,
662 struct cds_list_head
*enabler_bytecode_runtime_head
)
663 __attribute__((visibility("hidden")));
666 * Allocate and initialize a `struct lttng_event_notifier_group` object.
668 * On success, returns a `struct lttng_triggre_group`,
669 * on memory error, returns NULL.
671 struct lttng_event_notifier_group
*lttng_event_notifier_group_create(void)
672 __attribute__((visibility("hidden")));
675 * Destroy a `struct lttng_event_notifier_group` object.
677 void lttng_event_notifier_group_destroy(
678 struct lttng_event_notifier_group
*event_notifier_group
)
679 __attribute__((visibility("hidden")));
682 * Allocate and initialize a `struct lttng_event_notifier_enabler` object.
684 * On success, returns a `struct lttng_event_notifier_enabler`,
685 * On memory error, returns NULL.
687 struct lttng_event_notifier_enabler
*lttng_event_notifier_enabler_create(
688 struct lttng_event_notifier_group
*event_notifier_group
,
689 enum lttng_enabler_format_type format_type
,
690 struct lttng_ust_abi_event_notifier
*event_notifier_param
)
691 __attribute__((visibility("hidden")));
694 * Destroy a `struct lttng_event_notifier_enabler` object.
696 void lttng_event_notifier_enabler_destroy(
697 struct lttng_event_notifier_enabler
*event_notifier_enabler
)
698 __attribute__((visibility("hidden")));
701 * Enable a `struct lttng_event_notifier_enabler` object and all event
702 * notifiers related to this enabler.
704 int lttng_event_notifier_enabler_enable(
705 struct lttng_event_notifier_enabler
*event_notifier_enabler
)
706 __attribute__((visibility("hidden")));
709 * Disable a `struct lttng_event_notifier_enabler` object and all event
710 * notifiers related to this enabler.
712 int lttng_event_notifier_enabler_disable(
713 struct lttng_event_notifier_enabler
*event_notifier_enabler
)
714 __attribute__((visibility("hidden")));
717 * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and
718 * all event notifiers related to this enabler.
720 int lttng_event_notifier_enabler_attach_filter_bytecode(
721 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
722 struct lttng_ust_bytecode_node
**bytecode
)
723 __attribute__((visibility("hidden")));
726 * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and
727 * all event_notifiers related to this enabler.
729 int lttng_event_notifier_enabler_attach_capture_bytecode(
730 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
731 struct lttng_ust_bytecode_node
**bytecode
)
732 __attribute__((visibility("hidden")));
735 * Attach exclusion list to `struct lttng_event_notifier_enabler` and all
736 * event notifiers related to this enabler.
738 int lttng_event_notifier_enabler_attach_exclusion(
739 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
740 struct lttng_ust_excluder_node
**excluder
)
741 __attribute__((visibility("hidden")));
743 void lttng_free_event_filter_runtime(struct lttng_ust_event_common
*event
)
744 __attribute__((visibility("hidden")));
747 * Connect the probe on all enablers matching this event description.
748 * Called on library load.
750 int lttng_fix_pending_event_notifiers(void)
751 __attribute__((visibility("hidden")));
753 struct lttng_counter
*lttng_ust_counter_create(
754 const char *counter_transport_name
,
755 size_t number_dimensions
, const struct lttng_counter_dimension
*dimensions
)
756 __attribute__((visibility("hidden")));
758 #ifdef HAVE_LINUX_PERF_EVENT_H
760 int lttng_add_perf_counter_to_ctx(uint32_t type
,
763 struct lttng_ust_ctx
**ctx
)
764 __attribute__((visibility("hidden")));
766 int lttng_perf_counter_init(void)
767 __attribute__((visibility("hidden")));
769 void lttng_perf_counter_exit(void)
770 __attribute__((visibility("hidden")));
772 #else /* #ifdef HAVE_LINUX_PERF_EVENT_H */
775 int lttng_add_perf_counter_to_ctx(uint32_t type
,
778 struct lttng_ust_ctx
**ctx
)
783 int lttng_perf_counter_init(void)
788 void lttng_perf_counter_exit(void)
791 #endif /* #else #ifdef HAVE_LINUX_PERF_EVENT_H */
793 int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list
*list
)
794 __attribute__((visibility("hidden")));
796 void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list
*list
)
797 __attribute__((visibility("hidden")));
799 int lttng_probes_get_field_list(struct lttng_ust_field_list
*list
)
800 __attribute__((visibility("hidden")));
802 void lttng_probes_prune_field_list(struct lttng_ust_field_list
*list
)
803 __attribute__((visibility("hidden")));
805 struct lttng_ust_abi_tracepoint_iter
*
806 lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list
*list
)
807 __attribute__((visibility("hidden")));
809 struct lttng_ust_abi_field_iter
*
810 lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list
*list
)
811 __attribute__((visibility("hidden")));
813 struct lttng_ust_session
*lttng_session_create(void)
814 __attribute__((visibility("hidden")));
816 int lttng_session_enable(struct lttng_ust_session
*session
)
817 __attribute__((visibility("hidden")));
819 int lttng_session_disable(struct lttng_ust_session
*session
)
820 __attribute__((visibility("hidden")));
822 int lttng_session_statedump(struct lttng_ust_session
*session
)
823 __attribute__((visibility("hidden")));
825 void lttng_session_destroy(struct lttng_ust_session
*session
)
826 __attribute__((visibility("hidden")));
829 * Called with ust lock held.
831 int lttng_session_active(void)
832 __attribute__((visibility("hidden")));
834 struct cds_list_head
*lttng_get_sessions(void)
835 __attribute__((visibility("hidden")));
837 void lttng_handle_pending_statedump(void *owner
)
838 __attribute__((visibility("hidden")));
840 int lttng_channel_enable(struct lttng_ust_channel_common
*lttng_channel
)
841 __attribute__((visibility("hidden")));
843 int lttng_channel_disable(struct lttng_ust_channel_common
*lttng_channel
)
844 __attribute__((visibility("hidden")));
846 void lttng_transport_register(struct lttng_transport
*transport
)
847 __attribute__((visibility("hidden")));
849 void lttng_transport_unregister(struct lttng_transport
*transport
)
850 __attribute__((visibility("hidden")));
852 /* This is ABI between liblttng-ust and liblttng-ust-ctl */
853 struct lttng_transport
*lttng_ust_transport_find(const char *name
);
855 /* This is ABI between liblttng-ust and liblttng-ust-dl */
856 void lttng_ust_dl_update(void *ip
);
858 void lttng_probe_provider_unregister_events(struct lttng_ust_probe_desc
*desc
)
859 __attribute__((visibility("hidden")));
861 int lttng_fix_pending_events(void)
862 __attribute__((visibility("hidden")));
864 struct cds_list_head
*lttng_get_probe_list_head(void)
865 __attribute__((visibility("hidden")));
867 struct lttng_enum
*lttng_ust_enum_get_from_desc(struct lttng_ust_session
*session
,
868 struct lttng_ust_enum_desc
*enum_desc
)
869 __attribute__((visibility("hidden")));
871 int lttng_abi_create_root_handle(void)
872 __attribute__((visibility("hidden")));
874 const struct lttng_ust_abi_objd_ops
*lttng_ust_abi_objd_ops(int id
)
875 __attribute__((visibility("hidden")));
877 int lttng_ust_abi_objd_unref(int id
, int is_owner
)
878 __attribute__((visibility("hidden")));
880 void lttng_ust_abi_exit(void)
881 __attribute__((visibility("hidden")));
883 void lttng_ust_abi_events_exit(void)
884 __attribute__((visibility("hidden")));
886 void lttng_ust_abi_objd_table_owner_cleanup(void *owner
)
887 __attribute__((visibility("hidden")));
889 struct lttng_ust_channel_buffer
*lttng_ust_alloc_channel_buffer(void)
890 __attribute__((visibility("hidden")));
892 void lttng_ust_free_channel_common(struct lttng_ust_channel_common
*chan
)
893 __attribute__((visibility("hidden")));
895 int lttng_ust_interpret_event_filter(struct lttng_ust_event_common
*event
,
896 const char *interpreter_stack_data
,
898 __attribute__((visibility("hidden")));
900 int lttng_ust_session_uuid_validate(struct lttng_ust_session
*session
,
902 __attribute__((visibility("hidden")));
904 bool lttng_ust_validate_event_name(const struct lttng_ust_event_desc
*desc
)
905 __attribute__((visibility("hidden")));
907 void lttng_ust_format_event_name(const struct lttng_ust_event_desc
*desc
,
909 __attribute__((visibility("hidden")));
911 #endif /* _LTTNG_UST_EVENTS_INTERNAL_H */