1 #ifndef _LTTNG_UST_EVENTS_H
2 #define _LTTNG_UST_EVENTS_H
7 * Copyright 2010-2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9 * Holds LTTng per-session event registry.
11 * Permission is hereby granted, free of charge, to any person obtaining a copy
12 * of this software and associated documentation files (the "Software"), to deal
13 * in the Software without restriction, including without limitation the rights
14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 * copies of the Software, and to permit persons to whom the Software is
16 * furnished to do so, subject to the following conditions:
18 * The above copyright notice and this permission notice shall be included in
19 * all copies or substantial portions of the Software.
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 #include <urcu/list.h>
31 #include <urcu/hlist.h>
34 #include <lttng/ust-config.h>
35 #include <lttng/ust-abi.h>
36 #include <lttng/ust-tracer.h>
37 #include <lttng/ust-endian.h>
44 #error "LTTNG_PACKED should be defined"
51 #define LTTNG_UST_UUID_LEN 16
54 * Tracepoint provider version. Compatibility based on the major number.
55 * Older tracepoint providers can always register to newer lttng-ust
56 * library, but the opposite is rejected: a newer tracepoint provider is
57 * rejected by an older lttng-ust library.
59 #define LTTNG_UST_PROVIDER_MAJOR 2
60 #define LTTNG_UST_PROVIDER_MINOR 0
64 struct lttng_ust_lib_ring_buffer_ctx
;
65 struct lttng_ust_context_app
;
66 struct lttng_event_field
;
69 * Data structures used by tracepoint event declarations, and by the
70 * tracer. Those structures have padding for future extension.
74 * LTTng client type enumeration. Used by the consumer to map the
75 * callbacks from its own address space.
77 enum lttng_client_types
{
78 LTTNG_CLIENT_METADATA
= 0,
79 LTTNG_CLIENT_DISCARD
= 1,
80 LTTNG_CLIENT_OVERWRITE
= 2,
81 LTTNG_CLIENT_DISCARD_RT
= 3,
82 LTTNG_CLIENT_OVERWRITE_RT
= 4,
83 LTTNG_NR_CLIENT_TYPES
,
86 /* Type description */
88 /* Update the astract_types name table in lttng-types.c along with this enum */
89 enum lttng_abstract_types
{
101 /* Update the string_encodings name table in lttng-types.c along with this enum */
102 enum lttng_string_encodings
{
103 lttng_encode_none
= 0,
104 lttng_encode_UTF8
= 1,
105 lttng_encode_ASCII
= 2,
109 struct lttng_enum_value
{
110 unsigned long long value
;
111 unsigned int signedness
:1;
114 enum lttng_enum_entry_options
{
115 LTTNG_ENUM_ENTRY_OPTION_IS_AUTO
= 1U << 0,
118 #define LTTNG_UST_ENUM_ENTRY_PADDING 16
119 struct lttng_enum_entry
{
120 struct lttng_enum_value start
, end
; /* start and end are inclusive */
124 unsigned int options
;
125 } LTTNG_PACKED extra
;
126 char padding
[LTTNG_UST_ENUM_ENTRY_PADDING
];
130 #define __type_integer(_type, _byte_order, _base, _encoding) \
132 .atype = atype_integer, \
139 .size = sizeof(_type) * CHAR_BIT, \
140 .alignment = lttng_alignof(_type) * CHAR_BIT, \
141 .signedness = lttng_is_signed_type(_type), \
142 .reverse_byte_order = _byte_order != BYTE_ORDER, \
144 .encoding = lttng_encode_##_encoding, \
150 #define LTTNG_UST_INTEGER_TYPE_PADDING 24
151 struct lttng_integer_type
{
152 unsigned int size
; /* in bits */
153 unsigned short alignment
; /* in bits */
154 unsigned int signedness
:1;
155 unsigned int reverse_byte_order
:1;
156 unsigned int base
; /* 2, 8, 10, 16, for pretty print */
157 enum lttng_string_encodings encoding
;
158 char padding
[LTTNG_UST_INTEGER_TYPE_PADDING
];
162 * Only float and double are supported. long double is not supported at
165 #define _float_mant_dig(_type) \
166 (sizeof(_type) == sizeof(float) ? FLT_MANT_DIG \
167 : (sizeof(_type) == sizeof(double) ? DBL_MANT_DIG \
170 #define __type_float(_type) \
172 .atype = atype_float, \
179 .exp_dig = sizeof(_type) * CHAR_BIT \
180 - _float_mant_dig(_type), \
181 .mant_dig = _float_mant_dig(_type), \
182 .alignment = lttng_alignof(_type) * CHAR_BIT, \
183 .reverse_byte_order = BYTE_ORDER != FLOAT_WORD_ORDER, \
189 #define LTTNG_UST_FLOAT_TYPE_PADDING 24
190 struct lttng_float_type
{
191 unsigned int exp_dig
; /* exponent digits, in bits */
192 unsigned int mant_dig
; /* mantissa digits, in bits */
193 unsigned short alignment
; /* in bits */
194 unsigned int reverse_byte_order
:1;
195 char padding
[LTTNG_UST_FLOAT_TYPE_PADDING
];
198 #define LTTNG_UST_BASIC_TYPE_PADDING 128
199 union _lttng_basic_type
{
200 struct lttng_integer_type integer
;
202 const struct lttng_enum_desc
*desc
; /* Enumeration mapping */
203 struct lttng_integer_type container_type
;
206 enum lttng_string_encodings encoding
;
208 struct lttng_float_type _float
;
209 char padding
[LTTNG_UST_BASIC_TYPE_PADDING
];
212 struct lttng_basic_type
{
213 enum lttng_abstract_types atype
;
215 union _lttng_basic_type basic
;
219 #define LTTNG_UST_TYPE_PADDING 128
221 enum lttng_abstract_types atype
;
223 union _lttng_basic_type basic
;
225 struct lttng_basic_type elem_type
;
226 unsigned int length
; /* num. elems. */
229 struct lttng_basic_type length_type
;
230 struct lttng_basic_type elem_type
;
234 struct lttng_event_field
*fields
; /* Array of fields. */
236 char padding
[LTTNG_UST_TYPE_PADDING
];
240 #define LTTNG_UST_ENUM_TYPE_PADDING 24
241 struct lttng_enum_desc
{
243 const struct lttng_enum_entry
*entries
;
244 unsigned int nr_entries
;
245 char padding
[LTTNG_UST_ENUM_TYPE_PADDING
];
249 * Event field description
251 * IMPORTANT: this structure is part of the ABI between the probe and
252 * UST. Fields need to be only added at the end, never reordered, never
256 #define LTTNG_UST_EVENT_FIELD_PADDING 28
257 struct lttng_event_field
{
259 struct lttng_type type
;
260 unsigned int nowrite
; /* do not write into trace */
261 char padding
[LTTNG_UST_EVENT_FIELD_PADDING
];
264 enum lttng_ust_dynamic_type
{
265 LTTNG_UST_DYNAMIC_TYPE_NONE
,
266 LTTNG_UST_DYNAMIC_TYPE_S8
,
267 LTTNG_UST_DYNAMIC_TYPE_S16
,
268 LTTNG_UST_DYNAMIC_TYPE_S32
,
269 LTTNG_UST_DYNAMIC_TYPE_S64
,
270 LTTNG_UST_DYNAMIC_TYPE_U8
,
271 LTTNG_UST_DYNAMIC_TYPE_U16
,
272 LTTNG_UST_DYNAMIC_TYPE_U32
,
273 LTTNG_UST_DYNAMIC_TYPE_U64
,
274 LTTNG_UST_DYNAMIC_TYPE_FLOAT
,
275 LTTNG_UST_DYNAMIC_TYPE_DOUBLE
,
276 LTTNG_UST_DYNAMIC_TYPE_STRING
,
277 _NR_LTTNG_UST_DYNAMIC_TYPES
,
280 struct lttng_ctx_value
{
281 enum lttng_ust_dynamic_type sel
;
289 struct lttng_perf_counter_field
;
291 #define LTTNG_UST_CTX_FIELD_PADDING 40
292 struct lttng_ctx_field
{
293 struct lttng_event_field event_field
;
294 size_t (*get_size
)(struct lttng_ctx_field
*field
, size_t offset
);
295 void (*record
)(struct lttng_ctx_field
*field
,
296 struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
297 struct lttng_channel
*chan
);
298 void (*get_value
)(struct lttng_ctx_field
*field
,
299 struct lttng_ctx_value
*value
);
301 struct lttng_perf_counter_field
*perf_counter
;
302 char padding
[LTTNG_UST_CTX_FIELD_PADDING
];
304 void (*destroy
)(struct lttng_ctx_field
*field
);
305 char *field_name
; /* Has ownership, dynamically allocated. */
308 #define LTTNG_UST_CTX_PADDING 20
310 struct lttng_ctx_field
*fields
;
311 unsigned int nr_fields
;
312 unsigned int allocated_fields
;
313 unsigned int largest_align
;
314 char padding
[LTTNG_UST_CTX_PADDING
];
317 #define LTTNG_UST_EVENT_DESC_PADDING 40
318 struct lttng_event_desc
{
320 void (*probe_callback
)(void);
321 const struct lttng_event_ctx
*ctx
; /* context */
322 const struct lttng_event_field
*fields
; /* event payload */
323 unsigned int nr_fields
;
324 const int **loglevel
;
325 const char *signature
; /* Argument types/names received */
328 const char **model_emf_uri
;
330 char padding
[LTTNG_UST_EVENT_DESC_PADDING
];
334 #define LTTNG_UST_PROBE_DESC_PADDING 12
335 struct lttng_probe_desc
{
336 const char *provider
;
337 const struct lttng_event_desc
**event_desc
;
338 unsigned int nr_events
;
339 struct cds_list_head head
; /* chain registered probes */
340 struct cds_list_head lazy_init_head
;
341 int lazy
; /* lazy registration */
344 char padding
[LTTNG_UST_PROBE_DESC_PADDING
];
347 /* Data structures used by the tracer. */
349 enum lttng_enabler_type
{
350 LTTNG_ENABLER_STAR_GLOB
,
355 * Enabler field, within whatever object is enabling an event. Target of
356 * backward reference.
358 struct lttng_enabler
{
359 enum lttng_enabler_type type
;
361 /* head list of struct lttng_ust_filter_bytecode_node */
362 struct cds_list_head filter_bytecode_head
;
363 /* head list of struct lttng_ust_excluder_node */
364 struct cds_list_head excluder_head
;
365 struct cds_list_head node
; /* per-session list of enablers */
367 struct lttng_ust_event event_param
;
368 struct lttng_channel
*chan
;
370 * Unused, but kept around to make it explicit that the tracer can do
373 struct lttng_ctx
*ctx
;
374 unsigned int enabled
:1;
377 struct tp_list_entry
{
378 struct lttng_ust_tracepoint_iter tp
;
379 struct cds_list_head head
;
382 struct lttng_ust_tracepoint_list
{
383 struct tp_list_entry
*iter
;
384 struct cds_list_head head
;
387 struct tp_field_list_entry
{
388 struct lttng_ust_field_iter field
;
389 struct cds_list_head head
;
392 struct lttng_ust_field_list
{
393 struct tp_field_list_entry
*iter
;
394 struct cds_list_head head
;
397 struct ust_pending_probe
;
400 struct lttng_ust_filter_bytecode_node
{
401 struct cds_list_head node
;
402 struct lttng_enabler
*enabler
;
404 * struct lttng_ust_filter_bytecode has var. sized array, must
407 struct lttng_ust_filter_bytecode bc
;
410 struct lttng_ust_excluder_node
{
411 struct cds_list_head node
;
412 struct lttng_enabler
*enabler
;
414 * struct lttng_ust_event_exclusion had variable sized array,
415 * must be last field.
417 struct lttng_ust_event_exclusion excluder
;
420 * Filter return value masks.
422 enum lttng_filter_ret
{
423 LTTNG_FILTER_DISCARD
= 0,
424 LTTNG_FILTER_RECORD_FLAG
= (1ULL << 0),
425 /* Other bits are kept for future use. */
428 struct lttng_bytecode_runtime
{
429 /* Associated bytecode */
430 struct lttng_ust_filter_bytecode_node
*bc
;
431 uint64_t (*filter
)(void *filter_data
, const char *filter_stack_data
);
433 struct cds_list_head node
; /* list of bytecode runtime in event */
434 struct lttng_session
*session
;
438 * Objects in a linked-list of enablers, owned by an event.
440 struct lttng_enabler_ref
{
441 struct cds_list_head node
; /* enabler ref list */
442 struct lttng_enabler
*ref
; /* backward ref */
446 * lttng_event structure is referred to by the tracing fast path. It
447 * must be kept small.
449 * IMPORTANT: this structure is part of the ABI between the probe and
450 * UST. Fields need to be only added at the end, never reordered, never
454 /* LTTng-UST 2.0 starts here */
456 struct lttng_channel
*chan
;
458 const struct lttng_event_desc
*desc
;
460 struct lttng_ctx
*ctx
;
461 enum lttng_ust_instrumentation instrumentation
;
462 struct cds_list_head node
; /* Event list in session */
463 struct cds_list_head _deprecated2
;
465 unsigned int _deprecated4
:1;
467 /* LTTng-UST 2.1 starts here */
468 /* list of struct lttng_bytecode_runtime, sorted by seqnum */
469 struct cds_list_head bytecode_runtime_head
;
470 int has_enablers_without_bytecode
;
471 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
472 struct cds_list_head enablers_ref_head
;
473 struct cds_hlist_node hlist
; /* session ht of events */
474 int registered
; /* has reg'd tracepoint probe */
478 const struct lttng_enum_desc
*desc
;
479 struct lttng_session
*session
;
480 struct cds_list_head node
; /* Enum list in session */
481 struct cds_hlist_node hlist
; /* Session ht of enums */
482 uint64_t id
; /* Enumeration ID in sessiond */
486 struct lttng_ust_shm_handle
;
489 * IMPORTANT: this structure is part of the ABI between the probe and
490 * UST. Fields need to be only added at the end, never reordered, never
493 struct lttng_channel_ops
{
494 struct lttng_channel
*(*channel_create
)(const char *name
,
496 size_t subbuf_size
, size_t num_subbuf
,
497 unsigned int switch_timer_interval
,
498 unsigned int read_timer_interval
,
501 const int *stream_fds
, int nr_stream_fds
,
502 int64_t blocking_timeout
);
503 void (*channel_destroy
)(struct lttng_channel
*chan
);
507 * has_strcpy is needed by probe providers version 1.0 to
508 * dynamically detect whether the LTTng-UST tracepoint
509 * provider ABI implements event_strcpy. Starting from
510 * probe providers version 2.0, the check is not needed,
511 * but backward compatibility is provided for older versions.
513 unsigned long has_strcpy
:1; /* ABI has strcpy */
516 int (*event_reserve
)(struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
518 void (*event_commit
)(struct lttng_ust_lib_ring_buffer_ctx
*ctx
);
519 void (*event_write
)(struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
520 const void *src
, size_t len
);
522 * packet_avail_size returns the available size in the current
523 * packet. Note that the size returned is only a hint, since it
524 * may change due to concurrent writes.
526 size_t (*packet_avail_size
)(struct channel
*chan
,
527 struct lttng_ust_shm_handle
*handle
);
528 //wait_queue_head_t *(*get_reader_wait_queue)(struct channel *chan);
529 //wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan);
530 int (*is_finalized
)(struct channel
*chan
);
531 int (*is_disabled
)(struct channel
*chan
);
532 int (*flush_buffer
)(struct channel
*chan
, struct lttng_ust_shm_handle
*handle
);
533 void (*event_strcpy
)(struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
534 const char *src
, size_t len
);
538 * IMPORTANT: this structure is part of the ABI between the probe and
539 * UST. Fields need to be only added at the end, never reordered, never
542 struct lttng_channel
{
544 * The pointers located in this private data are NOT safe to be
545 * dereferenced by the consumer. The only operations the
546 * consumer process is designed to be allowed to do is to read
547 * and perform subbuffer flush.
549 struct channel
*chan
; /* Channel buffers */
551 struct lttng_ctx
*ctx
;
552 /* Event ID management */
553 struct lttng_session
*session
;
554 int objd
; /* Object associated to channel */
555 unsigned int _deprecated1
;
556 unsigned int _deprecated2
;
557 struct cds_list_head node
; /* Channel list in session */
558 const struct lttng_channel_ops
*ops
;
559 int header_type
; /* 0: unset, 1: compact, 2: large */
560 struct lttng_ust_shm_handle
*handle
; /* shared-memory handle */
561 unsigned int _deprecated3
:1;
565 enum lttng_ust_chan_type type
;
566 unsigned char uuid
[LTTNG_UST_UUID_LEN
]; /* Trace session unique ID */
567 int tstate
:1; /* Transient enable state */
570 #define LTTNG_UST_STACK_CTX_PADDING 32
571 struct lttng_stack_ctx
{
572 struct lttng_event
*event
;
573 struct lttng_ctx
*chan_ctx
; /* RCU dereferenced. */
574 struct lttng_ctx
*event_ctx
; /* RCU dereferenced. */
575 char padding
[LTTNG_UST_STACK_CTX_PADDING
];
578 #define LTTNG_UST_EVENT_HT_BITS 12
579 #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS)
581 struct lttng_ust_event_ht
{
582 struct cds_hlist_head table
[LTTNG_UST_EVENT_HT_SIZE
];
585 #define LTTNG_UST_ENUM_HT_BITS 12
586 #define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS)
588 struct lttng_ust_enum_ht
{
589 struct cds_hlist_head table
[LTTNG_UST_ENUM_HT_SIZE
];
593 * IMPORTANT: this structure is part of the ABI between the probe and
594 * UST. Fields need to be only added at the end, never reordered, never
597 struct lttng_session
{
598 int active
; /* Is trace session active ? */
599 int been_active
; /* Been active ? */
600 int objd
; /* Object associated */
602 struct cds_list_head chan_head
; /* Channel list head */
603 struct cds_list_head events_head
; /* list of events */
604 struct cds_list_head _deprecated2
;
605 struct cds_list_head node
; /* Session list */
607 unsigned int _deprecated4
:1;
610 /* List of enablers */
611 struct cds_list_head enablers_head
;
612 struct lttng_ust_event_ht events_ht
; /* ht of events */
613 void *owner
; /* object owner */
614 int tstate
:1; /* Transient enable state */
617 int statedump_pending
:1;
620 struct lttng_ust_enum_ht enums_ht
; /* ht of enumerations */
621 struct cds_list_head enums_head
;
622 struct lttng_ctx
*ctx
; /* contexts for filters. */
625 struct lttng_transport
{
627 struct cds_list_head node
;
628 struct lttng_channel_ops ops
;
629 const struct lttng_ust_lib_ring_buffer_config
*client_config
;
632 struct lttng_session
*lttng_session_create(void);
633 int lttng_session_enable(struct lttng_session
*session
);
634 int lttng_session_disable(struct lttng_session
*session
);
635 int lttng_session_statedump(struct lttng_session
*session
);
636 void lttng_session_destroy(struct lttng_session
*session
);
638 struct lttng_channel
*lttng_channel_create(struct lttng_session
*session
,
639 const char *transport_name
,
641 size_t subbuf_size
, size_t num_subbuf
,
642 unsigned int switch_timer_interval
,
643 unsigned int read_timer_interval
,
644 int **shm_fd
, int **wait_fd
,
645 uint64_t **memory_map_size
,
646 struct lttng_channel
*chan_priv_init
);
648 int lttng_channel_enable(struct lttng_channel
*channel
);
649 int lttng_channel_disable(struct lttng_channel
*channel
);
651 struct lttng_enabler
*lttng_enabler_create(enum lttng_enabler_type type
,
652 struct lttng_ust_event
*event_param
,
653 struct lttng_channel
*chan
);
654 int lttng_enabler_enable(struct lttng_enabler
*enabler
);
655 int lttng_enabler_disable(struct lttng_enabler
*enabler
);
656 int lttng_enabler_attach_bytecode(struct lttng_enabler
*enabler
,
657 struct lttng_ust_filter_bytecode_node
*bytecode
);
658 int lttng_enabler_attach_context(struct lttng_enabler
*enabler
,
659 struct lttng_ust_context
*ctx
);
660 int lttng_enabler_attach_exclusion(struct lttng_enabler
*enabler
,
661 struct lttng_ust_excluder_node
*excluder
);
663 int lttng_attach_context(struct lttng_ust_context
*context_param
,
664 union ust_args
*uargs
,
665 struct lttng_ctx
**ctx
, struct lttng_session
*session
);
666 int lttng_session_context_init(struct lttng_ctx
**ctx
);
668 void lttng_transport_register(struct lttng_transport
*transport
);
669 void lttng_transport_unregister(struct lttng_transport
*transport
);
671 void synchronize_trace(void);
673 int lttng_probe_register(struct lttng_probe_desc
*desc
);
674 void lttng_probe_unregister(struct lttng_probe_desc
*desc
);
675 void lttng_probe_provider_unregister_events(struct lttng_probe_desc
*desc
);
676 int lttng_fix_pending_events(void);
677 int lttng_probes_init(void);
678 void lttng_probes_exit(void);
679 int lttng_find_context(struct lttng_ctx
*ctx
, const char *name
);
680 int lttng_get_context_index(struct lttng_ctx
*ctx
, const char *name
);
681 struct lttng_ctx_field
*lttng_append_context(struct lttng_ctx
**ctx_p
);
682 void lttng_context_update(struct lttng_ctx
*ctx
);
683 void lttng_remove_context_field(struct lttng_ctx
**ctx_p
,
684 struct lttng_ctx_field
*field
);
685 void lttng_destroy_context(struct lttng_ctx
*ctx
);
686 int lttng_add_vtid_to_ctx(struct lttng_ctx
**ctx
);
687 int lttng_add_vpid_to_ctx(struct lttng_ctx
**ctx
);
688 int lttng_add_pthread_id_to_ctx(struct lttng_ctx
**ctx
);
689 int lttng_add_procname_to_ctx(struct lttng_ctx
**ctx
);
690 int lttng_add_ip_to_ctx(struct lttng_ctx
**ctx
);
691 int lttng_add_cpu_id_to_ctx(struct lttng_ctx
**ctx
);
692 int lttng_add_dyntest_to_ctx(struct lttng_ctx
**ctx
);
693 int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx
**ctx
);
694 int lttng_add_ipc_ns_to_ctx(struct lttng_ctx
**ctx
);
695 int lttng_add_mnt_ns_to_ctx(struct lttng_ctx
**ctx
);
696 int lttng_add_net_ns_to_ctx(struct lttng_ctx
**ctx
);
697 int lttng_add_pid_ns_to_ctx(struct lttng_ctx
**ctx
);
698 int lttng_add_user_ns_to_ctx(struct lttng_ctx
**ctx
);
699 int lttng_add_uts_ns_to_ctx(struct lttng_ctx
**ctx
);
700 int lttng_add_vuid_to_ctx(struct lttng_ctx
**ctx
);
701 int lttng_add_veuid_to_ctx(struct lttng_ctx
**ctx
);
702 int lttng_add_vsuid_to_ctx(struct lttng_ctx
**ctx
);
703 int lttng_add_vgid_to_ctx(struct lttng_ctx
**ctx
);
704 int lttng_add_vegid_to_ctx(struct lttng_ctx
**ctx
);
705 int lttng_add_vsgid_to_ctx(struct lttng_ctx
**ctx
);
706 void lttng_context_vtid_reset(void);
707 void lttng_context_vpid_reset(void);
708 void lttng_context_procname_reset(void);
709 void lttng_context_cgroup_ns_reset(void);
710 void lttng_context_ipc_ns_reset(void);
711 void lttng_context_mnt_ns_reset(void);
712 void lttng_context_net_ns_reset(void);
713 void lttng_context_pid_ns_reset(void);
714 void lttng_context_user_ns_reset(void);
715 void lttng_context_uts_ns_reset(void);
716 void lttng_context_vuid_reset(void);
717 void lttng_context_veuid_reset(void);
718 void lttng_context_vsuid_reset(void);
719 void lttng_context_vgid_reset(void);
720 void lttng_context_vegid_reset(void);
721 void lttng_context_vsgid_reset(void);
723 #ifdef LTTNG_UST_HAVE_PERF_EVENT
724 int lttng_add_perf_counter_to_ctx(uint32_t type
,
727 struct lttng_ctx
**ctx
);
728 int lttng_perf_counter_init(void);
729 void lttng_perf_counter_exit(void);
730 #else /* #ifdef LTTNG_UST_HAVE_PERF_EVENT */
732 int lttng_add_perf_counter_to_ctx(uint32_t type
,
735 struct lttng_ctx
**ctx
)
740 int lttng_perf_counter_init(void)
745 void lttng_perf_counter_exit(void)
748 #endif /* #else #ifdef LTTNG_UST_HAVE_PERF_EVENT */
750 extern const struct lttng_ust_client_lib_ring_buffer_client_cb
*lttng_client_callbacks_metadata
;
751 extern const struct lttng_ust_client_lib_ring_buffer_client_cb
*lttng_client_callbacks_discard
;
752 extern const struct lttng_ust_client_lib_ring_buffer_client_cb
*lttng_client_callbacks_overwrite
;
754 struct lttng_transport
*lttng_transport_find(const char *name
);
756 int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list
*list
);
757 void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list
*list
);
758 struct lttng_ust_tracepoint_iter
*
759 lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list
*list
);
760 int lttng_probes_get_field_list(struct lttng_ust_field_list
*list
);
761 void lttng_probes_prune_field_list(struct lttng_ust_field_list
*list
);
762 struct lttng_ust_field_iter
*
763 lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list
*list
);
765 void lttng_enabler_event_link_bytecode(struct lttng_event
*event
,
766 struct lttng_enabler
*enabler
);
767 void lttng_free_event_filter_runtime(struct lttng_event
*event
);
768 void lttng_filter_sync_state(struct lttng_bytecode_runtime
*runtime
);
770 struct cds_list_head
*lttng_get_probe_list_head(void);
771 int lttng_session_active(void);
773 typedef int (*t_statedump_func_ptr
)(struct lttng_session
*session
);
774 void lttng_handle_pending_statedump(void *owner
);
775 struct cds_list_head
*_lttng_get_sessions(void);
777 struct lttng_enum
*lttng_ust_enum_get_from_desc(struct lttng_session
*session
,
778 const struct lttng_enum_desc
*enum_desc
);
780 void lttng_ust_dl_update(void *ip
);
781 void lttng_ust_fixup_fd_tracker_tls(void);
783 /* For backward compatibility. Leave those exported symbols in place. */
784 extern struct lttng_ctx
*lttng_static_ctx
;
785 void lttng_context_init(void);
786 void lttng_context_exit(void);
787 void lttng_filter_event_link_bytecode(struct lttng_event
*event
);
793 #endif /* _LTTNG_UST_EVENTS_H */