2 * SPDX-License-Identifier: MIT
4 * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
6 * Holds LTTng per-session event registry.
9 #ifndef _LTTNG_UST_EVENTS_H
10 #define _LTTNG_UST_EVENTS_H
12 #include <urcu/list.h>
13 #include <urcu/hlist.h>
16 #include <lttng/ust-config.h>
17 #include <lttng/ust-abi.h>
18 #include <lttng/ust-tracer.h>
19 #include <lttng/ust-endian.h>
26 #error "LTTNG_PACKED should be defined"
33 #define LTTNG_UST_UUID_LEN 16
36 * Tracepoint provider version. Compatibility based on the major number.
37 * Older tracepoint providers can always register to newer lttng-ust
38 * library, but the opposite is rejected: a newer tracepoint provider is
39 * rejected by an older lttng-ust library.
41 #define LTTNG_UST_PROVIDER_MAJOR 2
42 #define LTTNG_UST_PROVIDER_MINOR 0
46 struct lttng_ust_lib_ring_buffer_ctx
;
47 struct lttng_ust_context_app
;
48 struct lttng_event_field
;
49 struct lttng_event_notifier
;
50 struct lttng_event_notifier_group
;
53 * Data structures used by tracepoint event declarations, and by the
54 * tracer. Those structures have padding for future extension.
58 * LTTng client type enumeration. Used by the consumer to map the
59 * callbacks from its own address space.
61 enum lttng_client_types
{
62 LTTNG_CLIENT_METADATA
= 0,
63 LTTNG_CLIENT_DISCARD
= 1,
64 LTTNG_CLIENT_OVERWRITE
= 2,
65 LTTNG_CLIENT_DISCARD_RT
= 3,
66 LTTNG_CLIENT_OVERWRITE_RT
= 4,
67 LTTNG_NR_CLIENT_TYPES
,
70 /* Type description */
72 /* Update the astract_types name table in lttng-types.c along with this enum */
73 enum lttng_abstract_types
{
75 atype_enum
, /* legacy */
76 atype_array
, /* legacy */
77 atype_sequence
, /* legacy */
81 atype_struct
, /* legacy */
84 atype_sequence_nestable
,
85 atype_struct_nestable
,
89 /* Update the string_encodings name table in lttng-types.c along with this enum */
90 enum lttng_string_encodings
{
91 lttng_encode_none
= 0,
92 lttng_encode_UTF8
= 1,
93 lttng_encode_ASCII
= 2,
97 struct lttng_enum_value
{
98 unsigned long long value
;
99 unsigned int signedness
:1;
102 enum lttng_enum_entry_options
{
103 LTTNG_ENUM_ENTRY_OPTION_IS_AUTO
= 1U << 0,
106 #define LTTNG_UST_ENUM_ENTRY_PADDING 16
107 struct lttng_enum_entry
{
108 struct lttng_enum_value start
, end
; /* start and end are inclusive */
112 unsigned int options
;
113 } LTTNG_PACKED extra
;
114 char padding
[LTTNG_UST_ENUM_ENTRY_PADDING
];
118 #define __type_integer(_type, _byte_order, _base, _encoding) \
120 .atype = atype_integer, \
125 .size = sizeof(_type) * CHAR_BIT, \
126 .alignment = lttng_alignof(_type) * CHAR_BIT, \
127 .signedness = lttng_is_signed_type(_type), \
128 .reverse_byte_order = _byte_order != BYTE_ORDER, \
130 .encoding = lttng_encode_##_encoding, \
135 #define LTTNG_UST_INTEGER_TYPE_PADDING 24
136 struct lttng_integer_type
{
137 unsigned int size
; /* in bits */
138 unsigned short alignment
; /* in bits */
139 unsigned int signedness
:1;
140 unsigned int reverse_byte_order
:1;
141 unsigned int base
; /* 2, 8, 10, 16, for pretty print */
142 enum lttng_string_encodings encoding
;
143 char padding
[LTTNG_UST_INTEGER_TYPE_PADDING
];
147 * Only float and double are supported. long double is not supported at
150 #define _float_mant_dig(_type) \
151 (sizeof(_type) == sizeof(float) ? FLT_MANT_DIG \
152 : (sizeof(_type) == sizeof(double) ? DBL_MANT_DIG \
155 #define __type_float(_type) \
157 .atype = atype_float, \
162 .exp_dig = sizeof(_type) * CHAR_BIT \
163 - _float_mant_dig(_type), \
164 .mant_dig = _float_mant_dig(_type), \
165 .alignment = lttng_alignof(_type) * CHAR_BIT, \
166 .reverse_byte_order = BYTE_ORDER != FLOAT_WORD_ORDER, \
171 #define LTTNG_UST_FLOAT_TYPE_PADDING 24
172 struct lttng_float_type
{
173 unsigned int exp_dig
; /* exponent digits, in bits */
174 unsigned int mant_dig
; /* mantissa digits, in bits */
175 unsigned short alignment
; /* in bits */
176 unsigned int reverse_byte_order
:1;
177 char padding
[LTTNG_UST_FLOAT_TYPE_PADDING
];
181 #define LTTNG_UST_BASIC_TYPE_PADDING 128
182 union _lttng_basic_type
{
183 struct lttng_integer_type integer
; /* legacy */
185 const struct lttng_enum_desc
*desc
; /* Enumeration mapping */
186 struct lttng_integer_type container_type
;
187 } enumeration
; /* legacy */
189 enum lttng_string_encodings encoding
;
190 } string
; /* legacy */
191 struct lttng_float_type _float
; /* legacy */
192 char padding
[LTTNG_UST_BASIC_TYPE_PADDING
];
196 struct lttng_basic_type
{
197 enum lttng_abstract_types atype
;
199 union _lttng_basic_type basic
;
203 #define LTTNG_UST_TYPE_PADDING 128
205 enum lttng_abstract_types atype
;
207 /* provider ABI 2.0 */
208 struct lttng_integer_type integer
;
209 struct lttng_float_type _float
;
211 enum lttng_string_encodings encoding
;
214 const struct lttng_enum_desc
*desc
; /* Enumeration mapping */
215 struct lttng_type
*container_type
;
218 const struct lttng_type
*elem_type
;
219 unsigned int length
; /* Num. elems. */
220 unsigned int alignment
;
223 const char *length_name
; /* Length field name. */
224 const struct lttng_type
*elem_type
;
225 unsigned int alignment
; /* Alignment before elements. */
228 unsigned int nr_fields
;
229 const struct lttng_event_field
*fields
; /* Array of fields. */
230 unsigned int alignment
;
234 /* legacy provider ABI 1.0 */
235 union _lttng_basic_type basic
; /* legacy */
237 struct lttng_basic_type elem_type
;
238 unsigned int length
; /* Num. elems. */
239 } array
; /* legacy */
241 struct lttng_basic_type length_type
;
242 struct lttng_basic_type elem_type
;
243 } sequence
; /* legacy */
245 unsigned int nr_fields
;
246 struct lttng_event_field
*fields
; /* Array of fields. */
247 } _struct
; /* legacy */
249 char padding
[LTTNG_UST_TYPE_PADDING
];
253 #define LTTNG_UST_ENUM_TYPE_PADDING 24
254 struct lttng_enum_desc
{
256 const struct lttng_enum_entry
*entries
;
257 unsigned int nr_entries
;
258 char padding
[LTTNG_UST_ENUM_TYPE_PADDING
];
262 * Event field description
264 * IMPORTANT: this structure is part of the ABI between the probe and
265 * UST. Fields need to be only added at the end, never reordered, never
269 #define LTTNG_UST_EVENT_FIELD_PADDING 28
270 struct lttng_event_field
{
272 struct lttng_type type
;
273 unsigned int nowrite
; /* do not write into trace */
276 unsigned int nofilter
:1; /* do not consider for filter */
278 char padding
[LTTNG_UST_EVENT_FIELD_PADDING
];
282 enum lttng_ust_dynamic_type
{
283 LTTNG_UST_DYNAMIC_TYPE_NONE
,
284 LTTNG_UST_DYNAMIC_TYPE_S8
,
285 LTTNG_UST_DYNAMIC_TYPE_S16
,
286 LTTNG_UST_DYNAMIC_TYPE_S32
,
287 LTTNG_UST_DYNAMIC_TYPE_S64
,
288 LTTNG_UST_DYNAMIC_TYPE_U8
,
289 LTTNG_UST_DYNAMIC_TYPE_U16
,
290 LTTNG_UST_DYNAMIC_TYPE_U32
,
291 LTTNG_UST_DYNAMIC_TYPE_U64
,
292 LTTNG_UST_DYNAMIC_TYPE_FLOAT
,
293 LTTNG_UST_DYNAMIC_TYPE_DOUBLE
,
294 LTTNG_UST_DYNAMIC_TYPE_STRING
,
295 _NR_LTTNG_UST_DYNAMIC_TYPES
,
298 struct lttng_ctx_value
{
299 enum lttng_ust_dynamic_type sel
;
308 struct lttng_perf_counter_field
;
310 #define LTTNG_UST_CTX_FIELD_PADDING 40
311 struct lttng_ctx_field
{
312 struct lttng_event_field event_field
;
313 size_t (*get_size
)(struct lttng_ctx_field
*field
, size_t offset
);
314 void (*record
)(struct lttng_ctx_field
*field
,
315 struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
316 struct lttng_channel
*chan
);
317 void (*get_value
)(struct lttng_ctx_field
*field
,
318 struct lttng_ctx_value
*value
);
320 struct lttng_perf_counter_field
*perf_counter
;
321 char padding
[LTTNG_UST_CTX_FIELD_PADDING
];
323 void (*destroy
)(struct lttng_ctx_field
*field
);
324 char *field_name
; /* Has ownership, dynamically allocated. */
327 #define LTTNG_UST_CTX_PADDING 20
329 struct lttng_ctx_field
*fields
;
330 unsigned int nr_fields
;
331 unsigned int allocated_fields
;
332 unsigned int largest_align
;
333 char padding
[LTTNG_UST_CTX_PADDING
];
336 #define LTTNG_UST_EVENT_DESC_PADDING 40
337 struct lttng_event_desc
{
339 void (*probe_callback
)(void);
340 const struct lttng_event_ctx
*ctx
; /* context */
341 const struct lttng_event_field
*fields
; /* event payload */
342 unsigned int nr_fields
;
343 const int **loglevel
;
344 const char *signature
; /* Argument types/names received */
347 const char **model_emf_uri
;
348 void (*event_notifier_callback
)(void);
350 char padding
[LTTNG_UST_EVENT_DESC_PADDING
];
354 #define LTTNG_UST_PROBE_DESC_PADDING 12
355 struct lttng_probe_desc
{
356 const char *provider
;
357 const struct lttng_event_desc
**event_desc
;
358 unsigned int nr_events
;
359 struct cds_list_head head
; /* chain registered probes */
360 struct cds_list_head lazy_init_head
;
361 int lazy
; /* lazy registration */
364 char padding
[LTTNG_UST_PROBE_DESC_PADDING
];
367 /* Data structures used by the tracer. */
369 enum lttng_enabler_format_type
{
370 LTTNG_ENABLER_FORMAT_STAR_GLOB
,
371 LTTNG_ENABLER_FORMAT_EVENT
,
375 * Enabler field, within whatever object is enabling an event. Target of
376 * backward reference.
378 struct lttng_enabler
{
379 enum lttng_enabler_format_type format_type
;
381 /* head list of struct lttng_ust_filter_bytecode_node */
382 struct cds_list_head filter_bytecode_head
;
383 /* head list of struct lttng_ust_excluder_node */
384 struct cds_list_head excluder_head
;
386 struct lttng_ust_event event_param
;
387 unsigned int enabled
:1;
390 struct tp_list_entry
{
391 struct lttng_ust_tracepoint_iter tp
;
392 struct cds_list_head head
;
395 struct lttng_ust_tracepoint_list
{
396 struct tp_list_entry
*iter
;
397 struct cds_list_head head
;
400 struct tp_field_list_entry
{
401 struct lttng_ust_field_iter field
;
402 struct cds_list_head head
;
405 struct lttng_ust_field_list
{
406 struct tp_field_list_entry
*iter
;
407 struct cds_list_head head
;
410 struct ust_pending_probe
;
414 * Bytecode interpreter return value masks.
416 enum lttng_bytecode_interpreter_ret
{
417 LTTNG_INTERPRETER_DISCARD
= 0,
418 LTTNG_INTERPRETER_RECORD_FLAG
= (1ULL << 0),
419 /* Other bits are kept for future use. */
422 struct lttng_interpreter_output
;
425 * This structure is used in the probes. More specifically, the `filter` and
426 * `node` fields are explicity used in the probes. When modifying this
427 * structure we must not change the layout of these two fields as it is
430 struct lttng_bytecode_runtime
{
431 /* Associated bytecode */
432 struct lttng_ust_bytecode_node
*bc
;
434 uint64_t (*filter
)(void *interpreter_data
,
435 const char *interpreter_stack_data
);
436 uint64_t (*capture
)(void *interpreter_data
,
437 const char *interpreter_stack_data
,
438 struct lttng_interpreter_output
*interpreter_output
);
441 struct cds_list_head node
; /* list of bytecode runtime in event */
443 * Pointer to a URCU-protected pointer owned by an `struct
444 * lttng_session`or `struct lttng_event_notifier_group`.
446 struct lttng_ctx
**pctx
;
450 * Objects in a linked-list of enablers, owned by an event or event_notifier.
451 * This is used because an event (or a event_notifier) can be enabled by more
452 * than one enabler and we want a quick way to iterate over all enablers of an
455 * For example, event rules "my_app:a*" and "my_app:ab*" will both match the
456 * event with the name "my_app:abc".
458 struct lttng_enabler_ref
{
459 struct cds_list_head node
; /* enabler ref list */
460 struct lttng_enabler
*ref
; /* backward ref */
464 * lttng_event structure is referred to by the tracing fast path. It
465 * must be kept small.
467 * IMPORTANT: this structure is part of the ABI between the probe and
468 * UST. Fields need to be only added at the end, never reordered, never
473 struct lttng_channel
*chan
;
475 const struct lttng_event_desc
*desc
;
476 struct lttng_ctx
*ctx
;
477 enum lttng_ust_instrumentation instrumentation
;
478 struct cds_list_head node
; /* Event list in session */
480 /* list of struct lttng_bytecode_runtime, sorted by seqnum */
481 struct cds_list_head filter_bytecode_runtime_head
;
482 int has_enablers_without_bytecode
;
483 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
484 struct cds_list_head enablers_ref_head
;
485 struct cds_hlist_node hlist
; /* session ht of events */
486 int registered
; /* has reg'd tracepoint probe */
489 struct lttng_event_notifier
{
491 uint64_t error_counter_index
;
493 int registered
; /* has reg'd tracepoint probe */
494 size_t num_captures
; /* Needed to allocate the msgpack array. */
495 void (*notification_send
)(struct lttng_event_notifier
*event_notifier
,
496 const char *stack_data
);
497 struct cds_list_head filter_bytecode_runtime_head
;
498 struct cds_list_head capture_bytecode_runtime_head
;
499 int has_enablers_without_bytecode
;
500 struct cds_list_head enablers_ref_head
;
501 const struct lttng_event_desc
*desc
;
502 struct cds_hlist_node hlist
; /* hashtable of event_notifiers */
503 struct cds_list_head node
; /* event_notifier list in session */
504 struct lttng_event_notifier_group
*group
; /* weak ref */
508 const struct lttng_enum_desc
*desc
;
509 struct lttng_session
*session
;
510 struct cds_list_head node
; /* Enum list in session */
511 struct cds_hlist_node hlist
; /* Session ht of enums */
512 uint64_t id
; /* Enumeration ID in sessiond */
516 struct lttng_ust_shm_handle
;
519 * IMPORTANT: this structure is part of the ABI between the probe and
520 * UST. Fields need to be only added at the end, never reordered, never
523 struct lttng_channel_ops
{
524 struct lttng_channel
*(*channel_create
)(const char *name
,
526 size_t subbuf_size
, size_t num_subbuf
,
527 unsigned int switch_timer_interval
,
528 unsigned int read_timer_interval
,
531 const int *stream_fds
, int nr_stream_fds
,
532 int64_t blocking_timeout
);
533 void (*channel_destroy
)(struct lttng_channel
*chan
);
534 int (*event_reserve
)(struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
536 void (*event_commit
)(struct lttng_ust_lib_ring_buffer_ctx
*ctx
);
537 void (*event_write
)(struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
538 const void *src
, size_t len
);
540 * packet_avail_size returns the available size in the current
541 * packet. Note that the size returned is only a hint, since it
542 * may change due to concurrent writes.
544 size_t (*packet_avail_size
)(struct channel
*chan
,
545 struct lttng_ust_shm_handle
*handle
);
546 int (*is_finalized
)(struct channel
*chan
);
547 int (*is_disabled
)(struct channel
*chan
);
548 int (*flush_buffer
)(struct channel
*chan
, struct lttng_ust_shm_handle
*handle
);
549 void (*event_strcpy
)(struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
550 const char *src
, size_t len
);
554 * IMPORTANT: this structure is part of the ABI between the probe and
555 * UST. Fields need to be only added at the end, never reordered, never
558 struct lttng_channel
{
560 * The pointers located in this private data are NOT safe to be
561 * dereferenced by the consumer. The only operations the
562 * consumer process is designed to be allowed to do is to read
563 * and perform subbuffer flush.
565 struct channel
*chan
; /* Channel buffers */
567 struct lttng_ctx
*ctx
;
568 /* Event ID management */
569 struct lttng_session
*session
;
570 int objd
; /* Object associated to channel */
571 struct cds_list_head node
; /* Channel list in session */
572 const struct lttng_channel_ops
*ops
;
573 int header_type
; /* 0: unset, 1: compact, 2: large */
574 struct lttng_ust_shm_handle
*handle
; /* shared-memory handle */
578 enum lttng_ust_chan_type type
;
579 unsigned char uuid
[LTTNG_UST_UUID_LEN
]; /* Trace session unique ID */
580 int tstate
:1; /* Transient enable state */
583 #define LTTNG_COUNTER_DIMENSION_MAX 8
585 struct lttng_counter_dimension
{
587 uint64_t underflow_index
;
588 uint64_t overflow_index
;
589 uint8_t has_underflow
;
590 uint8_t has_overflow
;
593 struct lttng_counter_ops
{
594 struct lib_counter
*(*counter_create
)(size_t nr_dimensions
,
595 const struct lttng_counter_dimension
*dimensions
,
596 int64_t global_sum_step
,
597 int global_counter_fd
,
598 int nr_counter_cpu_fds
,
599 const int *counter_cpu_fds
,
601 void (*counter_destroy
)(struct lib_counter
*counter
);
602 int (*counter_add
)(struct lib_counter
*counter
,
603 const size_t *dimension_indexes
, int64_t v
);
604 int (*counter_read
)(struct lib_counter
*counter
,
605 const size_t *dimension_indexes
, int cpu
,
606 int64_t *value
, bool *overflow
, bool *underflow
);
607 int (*counter_aggregate
)(struct lib_counter
*counter
,
608 const size_t *dimension_indexes
, int64_t *value
,
609 bool *overflow
, bool *underflow
);
610 int (*counter_clear
)(struct lib_counter
*counter
, const size_t *dimension_indexes
);
613 #define LTTNG_UST_STACK_CTX_PADDING 32
614 struct lttng_stack_ctx
{
615 struct lttng_event
*event
;
616 struct lttng_ctx
*chan_ctx
; /* RCU dereferenced. */
617 struct lttng_ctx
*event_ctx
; /* RCU dereferenced. */
618 char padding
[LTTNG_UST_STACK_CTX_PADDING
];
621 #define LTTNG_UST_EVENT_HT_BITS 12
622 #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS)
624 struct lttng_ust_event_ht
{
625 struct cds_hlist_head table
[LTTNG_UST_EVENT_HT_SIZE
];
628 #define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12
629 #define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS)
630 struct lttng_ust_event_notifier_ht
{
631 struct cds_hlist_head table
[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE
];
634 #define LTTNG_UST_ENUM_HT_BITS 12
635 #define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS)
637 struct lttng_ust_enum_ht
{
638 struct cds_hlist_head table
[LTTNG_UST_ENUM_HT_SIZE
];
642 * IMPORTANT: this structure is part of the ABI between the probe and
643 * UST. Fields need to be only added at the end, never reordered, never
646 struct lttng_session
{
647 int active
; /* Is trace session active ? */
648 int been_active
; /* Been active ? */
649 int objd
; /* Object associated */
650 struct cds_list_head chan_head
; /* Channel list head */
651 struct cds_list_head events_head
; /* list of events */
652 struct cds_list_head node
; /* Session list */
655 /* List of enablers */
656 struct cds_list_head enablers_head
;
657 struct lttng_ust_event_ht events_ht
; /* ht of events */
658 void *owner
; /* object owner */
659 int tstate
:1; /* Transient enable state */
662 int statedump_pending
:1;
665 struct lttng_ust_enum_ht enums_ht
; /* ht of enumerations */
666 struct cds_list_head enums_head
;
667 struct lttng_ctx
*ctx
; /* contexts for filters. */
670 struct lttng_counter
{
672 struct lttng_event_notifier_group
*event_notifier_group
; /* owner */
673 struct lttng_counter_transport
*transport
;
674 struct lib_counter
*counter
;
675 struct lttng_counter_ops
*ops
;
678 struct lttng_event_notifier_group
{
682 struct cds_list_head node
; /* Event notifier group handle list */
683 struct cds_list_head enablers_head
;
684 struct cds_list_head event_notifiers_head
; /* list of event_notifiers */
685 struct lttng_ust_event_notifier_ht event_notifiers_ht
; /* hashtable of event_notifiers */
686 struct lttng_ctx
*ctx
; /* contexts for filters. */
688 struct lttng_counter
*error_counter
;
689 size_t error_counter_len
;
692 struct lttng_transport
{
694 struct cds_list_head node
;
695 struct lttng_channel_ops ops
;
696 const struct lttng_ust_lib_ring_buffer_config
*client_config
;
699 struct lttng_counter_transport
{
701 struct cds_list_head node
;
702 struct lttng_counter_ops ops
;
703 const struct lib_counter_config
*client_config
;
706 struct lttng_session
*lttng_session_create(void);
707 int lttng_session_enable(struct lttng_session
*session
);
708 int lttng_session_disable(struct lttng_session
*session
);
709 int lttng_session_statedump(struct lttng_session
*session
);
710 void lttng_session_destroy(struct lttng_session
*session
);
712 struct lttng_channel
*lttng_channel_create(struct lttng_session
*session
,
713 const char *transport_name
,
715 size_t subbuf_size
, size_t num_subbuf
,
716 unsigned int switch_timer_interval
,
717 unsigned int read_timer_interval
,
718 int **shm_fd
, int **wait_fd
,
719 uint64_t **memory_map_size
,
720 struct lttng_channel
*chan_priv_init
);
722 int lttng_channel_enable(struct lttng_channel
*channel
);
723 int lttng_channel_disable(struct lttng_channel
*channel
);
725 int lttng_attach_context(struct lttng_ust_context
*context_param
,
726 union ust_args
*uargs
,
727 struct lttng_ctx
**ctx
, struct lttng_session
*session
);
728 void lttng_transport_register(struct lttng_transport
*transport
);
729 void lttng_transport_unregister(struct lttng_transport
*transport
);
731 int lttng_probe_register(struct lttng_probe_desc
*desc
);
732 void lttng_probe_unregister(struct lttng_probe_desc
*desc
);
733 void lttng_probe_provider_unregister_events(struct lttng_probe_desc
*desc
);
734 int lttng_fix_pending_events(void);
735 int lttng_probes_init(void);
736 void lttng_probes_exit(void);
737 int lttng_find_context(struct lttng_ctx
*ctx
, const char *name
);
738 int lttng_get_context_index(struct lttng_ctx
*ctx
, const char *name
);
739 struct lttng_ctx_field
*lttng_append_context(struct lttng_ctx
**ctx_p
);
740 void lttng_context_update(struct lttng_ctx
*ctx
);
741 void lttng_remove_context_field(struct lttng_ctx
**ctx_p
,
742 struct lttng_ctx_field
*field
);
743 void lttng_destroy_context(struct lttng_ctx
*ctx
);
744 int lttng_add_vtid_to_ctx(struct lttng_ctx
**ctx
);
745 int lttng_add_vpid_to_ctx(struct lttng_ctx
**ctx
);
746 int lttng_add_pthread_id_to_ctx(struct lttng_ctx
**ctx
);
747 int lttng_add_procname_to_ctx(struct lttng_ctx
**ctx
);
748 int lttng_add_ip_to_ctx(struct lttng_ctx
**ctx
);
749 int lttng_add_cpu_id_to_ctx(struct lttng_ctx
**ctx
);
750 int lttng_add_dyntest_to_ctx(struct lttng_ctx
**ctx
);
751 int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx
**ctx
);
752 int lttng_add_ipc_ns_to_ctx(struct lttng_ctx
**ctx
);
753 int lttng_add_mnt_ns_to_ctx(struct lttng_ctx
**ctx
);
754 int lttng_add_net_ns_to_ctx(struct lttng_ctx
**ctx
);
755 int lttng_add_pid_ns_to_ctx(struct lttng_ctx
**ctx
);
756 int lttng_add_user_ns_to_ctx(struct lttng_ctx
**ctx
);
757 int lttng_add_uts_ns_to_ctx(struct lttng_ctx
**ctx
);
758 int lttng_add_vuid_to_ctx(struct lttng_ctx
**ctx
);
759 int lttng_add_veuid_to_ctx(struct lttng_ctx
**ctx
);
760 int lttng_add_vsuid_to_ctx(struct lttng_ctx
**ctx
);
761 int lttng_add_vgid_to_ctx(struct lttng_ctx
**ctx
);
762 int lttng_add_vegid_to_ctx(struct lttng_ctx
**ctx
);
763 int lttng_add_vsgid_to_ctx(struct lttng_ctx
**ctx
);
764 void lttng_context_vtid_reset(void);
765 void lttng_context_vpid_reset(void);
766 void lttng_context_procname_reset(void);
767 void lttng_context_cgroup_ns_reset(void);
768 void lttng_context_ipc_ns_reset(void);
769 void lttng_context_mnt_ns_reset(void);
770 void lttng_context_net_ns_reset(void);
771 void lttng_context_pid_ns_reset(void);
772 void lttng_context_user_ns_reset(void);
773 void lttng_context_uts_ns_reset(void);
774 void lttng_context_vuid_reset(void);
775 void lttng_context_veuid_reset(void);
776 void lttng_context_vsuid_reset(void);
777 void lttng_context_vgid_reset(void);
778 void lttng_context_vegid_reset(void);
779 void lttng_context_vsgid_reset(void);
781 #ifdef LTTNG_UST_HAVE_PERF_EVENT
782 int lttng_add_perf_counter_to_ctx(uint32_t type
,
785 struct lttng_ctx
**ctx
);
786 int lttng_perf_counter_init(void);
787 void lttng_perf_counter_exit(void);
788 #else /* #ifdef LTTNG_UST_HAVE_PERF_EVENT */
790 int lttng_add_perf_counter_to_ctx(uint32_t type
,
793 struct lttng_ctx
**ctx
)
798 int lttng_perf_counter_init(void)
803 void lttng_perf_counter_exit(void)
806 #endif /* #else #ifdef LTTNG_UST_HAVE_PERF_EVENT */
808 extern const struct lttng_ust_client_lib_ring_buffer_client_cb
*lttng_client_callbacks_metadata
;
809 extern const struct lttng_ust_client_lib_ring_buffer_client_cb
*lttng_client_callbacks_discard
;
810 extern const struct lttng_ust_client_lib_ring_buffer_client_cb
*lttng_client_callbacks_overwrite
;
812 struct lttng_transport
*lttng_transport_find(const char *name
);
814 int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list
*list
);
815 void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list
*list
);
816 struct lttng_ust_tracepoint_iter
*
817 lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list
*list
);
818 int lttng_probes_get_field_list(struct lttng_ust_field_list
*list
);
819 void lttng_probes_prune_field_list(struct lttng_ust_field_list
*list
);
820 struct lttng_ust_field_iter
*
821 lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list
*list
);
823 void lttng_free_event_filter_runtime(struct lttng_event
*event
);
825 struct cds_list_head
*lttng_get_probe_list_head(void);
826 int lttng_session_active(void);
828 typedef int (*t_statedump_func_ptr
)(struct lttng_session
*session
);
829 void lttng_handle_pending_statedump(void *owner
);
830 struct cds_list_head
*_lttng_get_sessions(void);
832 struct lttng_enum
*lttng_ust_enum_get_from_desc(struct lttng_session
*session
,
833 const struct lttng_enum_desc
*enum_desc
);
835 void lttng_ust_dl_update(void *ip
);
836 void lttng_ust_fixup_fd_tracker_tls(void);
842 #endif /* _LTTNG_UST_EVENTS_H */