2 * Copyright (C) 2011 EfficiOS Inc.
3 * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
5 * SPDX-License-Identifier: GPL-2.0-only
9 #ifndef LTTNG_UST_CTL_INTERNAL_H
10 #define LTTNG_UST_CTL_INTERNAL_H
12 #include <sys/types.h>
15 #include "lttng-ust-abi.hpp"
17 #ifndef LTTNG_UST_UUID_LEN
18 #define LTTNG_UST_UUID_LEN 16
21 /* Default unix socket path */
22 #define LTTNG_UST_SOCK_FILENAME \
24 __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE)
27 * Shared memory files path are automatically related to shm root, e.g.
28 * /dev/shm under linux.
30 #define LTTNG_UST_WAIT_FILENAME \
32 __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE)
34 struct lttng_ust_shm_handle;
35 struct lttng_ust_lib_ring_buffer;
37 struct lttng_ust_ctl_consumer_channel_attr {
38 enum lttng_ust_abi_chan_type type;
39 uint64_t subbuf_size; /* bytes */
40 uint64_t num_subbuf; /* power of 2 */
41 int overwrite; /* 1: overwrite, 0: discard */
42 unsigned int switch_timer_interval; /* usec */
43 unsigned int read_timer_interval; /* usec */
44 enum lttng_ust_abi_output output; /* splice, mmap */
45 uint32_t chan_id; /* channel ID */
46 unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
47 int64_t blocking_timeout; /* Blocking timeout (usec) */
51 * API used by sessiond.
54 struct lttng_ust_context_attr {
55 enum lttng_ust_abi_context_type ctx;
57 struct lttng_ust_abi_perf_counter_ctx perf_counter;
66 * Error values: all the following functions return:
67 * >= 0: Success (LTTNG_UST_OK)
70 int lttng_ust_ctl_register_done(int sock);
71 int lttng_ust_ctl_create_session(int sock);
72 int lttng_ust_ctl_create_event(int sock, struct lttng_ust_abi_event *ev,
73 struct lttng_ust_abi_object_data *channel_data,
74 struct lttng_ust_abi_object_data **event_data);
75 int lttng_ust_ctl_add_context(int sock, struct lttng_ust_context_attr *ctx,
76 struct lttng_ust_abi_object_data *obj_data,
77 struct lttng_ust_abi_object_data **context_data);
78 int lttng_ust_ctl_set_filter(int sock, struct lttng_ust_abi_filter_bytecode *bytecode,
79 struct lttng_ust_abi_object_data *obj_data);
80 int lttng_ust_ctl_set_capture(int sock, struct lttng_ust_abi_capture_bytecode *bytecode,
81 struct lttng_ust_abi_object_data *obj_data);
82 int lttng_ust_ctl_set_exclusion(int sock, struct lttng_ust_abi_event_exclusion *exclusion,
83 struct lttng_ust_abi_object_data *obj_data);
85 int lttng_ust_ctl_enable(int sock, struct lttng_ust_abi_object_data *object);
86 int lttng_ust_ctl_disable(int sock, struct lttng_ust_abi_object_data *object);
87 int lttng_ust_ctl_start_session(int sock, int handle);
88 int lttng_ust_ctl_stop_session(int sock, int handle);
91 * lttng_ust_ctl_create_event notifier_group creates a event notifier group. It
92 * establishes the connection with the application by providing a file
93 * descriptor of the pipe to be used by the application when a event notifier
94 * of that group is fired. It returns a handle to be used when creating event
95 * notifier in that group.
97 int lttng_ust_ctl_create_event_notifier_group(int sock, int pipe_fd,
98 struct lttng_ust_abi_object_data **event_notifier_group);
101 * lttng_ust_ctl_create_event notifier creates a event notifier in a event notifier
102 * group giving a event notifier description and a event notifier group handle.
103 * It returns a event notifier handle to be used when enabling the event
104 * notifier, attaching filter, attaching exclusion, and disabling the event
107 int lttng_ust_ctl_create_event_notifier(int sock,
108 struct lttng_ust_abi_event_notifier *event_notifier,
109 struct lttng_ust_abi_object_data *event_notifier_group,
110 struct lttng_ust_abi_object_data **event_notifier_data);
113 * lttng_ust_ctl_tracepoint_list returns a tracepoint list handle, or negative
116 int lttng_ust_ctl_tracepoint_list(int sock);
119 * lttng_ust_ctl_tracepoint_list_get is used to iterate on the tp list
120 * handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is
123 int lttng_ust_ctl_tracepoint_list_get(int sock, int tp_list_handle,
124 struct lttng_ust_abi_tracepoint_iter *iter);
127 * lttng_ust_ctl_tracepoint_field_list returns a tracepoint field list handle,
128 * or negative error value.
130 int lttng_ust_ctl_tracepoint_field_list(int sock);
133 * lttng_ust_ctl_tracepoint_field_list_get is used to iterate on the tp field
134 * list handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is
137 int lttng_ust_ctl_tracepoint_field_list_get(int sock, int tp_field_list_handle,
138 struct lttng_ust_abi_field_iter *iter);
140 int lttng_ust_ctl_tracer_version(int sock, struct lttng_ust_abi_tracer_version *v);
141 int lttng_ust_ctl_wait_quiescent(int sock);
143 int lttng_ust_ctl_sock_flush_buffer(int sock, struct lttng_ust_abi_object_data *object);
145 int lttng_ust_ctl_calibrate(int sock, struct lttng_ust_abi_calibrate *calibrate);
147 /* Release object created by members of this API. */
148 int lttng_ust_ctl_release_object(int sock, struct lttng_ust_abi_object_data *data);
149 /* Release handle returned by create session. */
150 int lttng_ust_ctl_release_handle(int sock, int handle);
152 int lttng_ust_ctl_recv_channel_from_consumer(int sock,
153 struct lttng_ust_abi_object_data **channel_data);
154 int lttng_ust_ctl_recv_stream_from_consumer(int sock,
155 struct lttng_ust_abi_object_data **stream_data);
156 int lttng_ust_ctl_send_channel_to_ust(int sock, int session_handle,
157 struct lttng_ust_abi_object_data *channel_data);
158 int lttng_ust_ctl_send_stream_to_ust(int sock,
159 struct lttng_ust_abi_object_data *channel_data,
160 struct lttng_ust_abi_object_data *stream_data);
163 * lttng_ust_ctl_duplicate_ust_object_data allocated a new object in "dest" if
164 * it succeeds (returns 0). It must be released using
165 * lttng_ust_ctl_release_object() and then freed with free().
167 int lttng_ust_ctl_duplicate_ust_object_data(struct lttng_ust_abi_object_data **dest,
168 struct lttng_ust_abi_object_data *src);
171 * API used by consumer.
174 struct lttng_ust_ctl_consumer_channel;
175 struct lttng_ust_ctl_consumer_stream;
176 struct lttng_ust_ctl_consumer_channel_attr;
178 int lttng_ust_ctl_get_nr_stream_per_channel(void);
180 struct lttng_ust_ctl_consumer_channel *
181 lttng_ust_ctl_create_channel(struct lttng_ust_ctl_consumer_channel_attr *attr,
182 const int *stream_fds, int nr_stream_fds);
184 * Each stream created needs to be destroyed before calling
185 * lttng_ust_ctl_destroy_channel().
187 void lttng_ust_ctl_destroy_channel(struct lttng_ust_ctl_consumer_channel *chan);
189 int lttng_ust_ctl_send_channel_to_sessiond(int sock,
190 struct lttng_ust_ctl_consumer_channel *channel);
191 int lttng_ust_ctl_channel_close_wait_fd(struct lttng_ust_ctl_consumer_channel *consumer_chan);
192 int lttng_ust_ctl_channel_close_wakeup_fd(struct lttng_ust_ctl_consumer_channel *consumer_chan);
193 int lttng_ust_ctl_channel_get_wait_fd(struct lttng_ust_ctl_consumer_channel *consumer_chan);
194 int lttng_ust_ctl_channel_get_wakeup_fd(struct lttng_ust_ctl_consumer_channel *consumer_chan);
196 int lttng_ust_ctl_write_metadata_to_channel(
197 struct lttng_ust_ctl_consumer_channel *channel,
198 const char *metadata_str, /* NOT null-terminated */
199 size_t len); /* metadata length */
200 ssize_t lttng_ust_ctl_write_one_packet_to_channel(
201 struct lttng_ust_ctl_consumer_channel *channel,
202 const char *metadata_str, /* NOT null-terminated */
203 size_t len); /* metadata length */
206 * Send a NULL stream to finish iteration over all streams of a given
209 int lttng_ust_ctl_send_stream_to_sessiond(int sock,
210 struct lttng_ust_ctl_consumer_stream *stream);
211 int lttng_ust_ctl_stream_close_wait_fd(struct lttng_ust_ctl_consumer_stream *stream);
212 int lttng_ust_ctl_stream_close_wakeup_fd(struct lttng_ust_ctl_consumer_stream *stream);
213 int lttng_ust_ctl_stream_get_wait_fd(struct lttng_ust_ctl_consumer_stream *stream);
214 int lttng_ust_ctl_stream_get_wakeup_fd(struct lttng_ust_ctl_consumer_stream *stream);
216 /* Create/destroy stream buffers for read */
217 struct lttng_ust_ctl_consumer_stream *
218 lttng_ust_ctl_create_stream(struct lttng_ust_ctl_consumer_channel *channel,
220 void lttng_ust_ctl_destroy_stream(struct lttng_ust_ctl_consumer_stream *stream);
222 /* For mmap mode, readable without "get" operation */
223 int lttng_ust_ctl_get_mmap_len(struct lttng_ust_ctl_consumer_stream *stream,
225 int lttng_ust_ctl_get_max_subbuf_size(struct lttng_ust_ctl_consumer_stream *stream,
229 * For mmap mode, operate on the current packet (between get/put or
230 * get_next/put_next).
232 void *lttng_ust_ctl_get_mmap_base(struct lttng_ust_ctl_consumer_stream *stream);
233 int lttng_ust_ctl_get_mmap_read_offset(struct lttng_ust_ctl_consumer_stream *stream,
235 int lttng_ust_ctl_get_subbuf_size(struct lttng_ust_ctl_consumer_stream *stream,
237 int lttng_ust_ctl_get_padded_subbuf_size(struct lttng_ust_ctl_consumer_stream *stream,
239 int lttng_ust_ctl_get_next_subbuf(struct lttng_ust_ctl_consumer_stream *stream);
240 int lttng_ust_ctl_put_next_subbuf(struct lttng_ust_ctl_consumer_stream *stream);
244 int lttng_ust_ctl_snapshot(struct lttng_ust_ctl_consumer_stream *stream);
245 int lttng_ust_ctl_snapshot_sample_positions(struct lttng_ust_ctl_consumer_stream *stream);
246 int lttng_ust_ctl_snapshot_get_consumed(struct lttng_ust_ctl_consumer_stream *stream,
248 int lttng_ust_ctl_snapshot_get_produced(struct lttng_ust_ctl_consumer_stream *stream,
250 int lttng_ust_ctl_get_subbuf(struct lttng_ust_ctl_consumer_stream *stream,
252 int lttng_ust_ctl_put_subbuf(struct lttng_ust_ctl_consumer_stream *stream);
254 int lttng_ust_ctl_flush_buffer(struct lttng_ust_ctl_consumer_stream *stream,
255 int producer_active);
256 int lttng_ust_ctl_clear_buffer(struct lttng_ust_ctl_consumer_stream *stream);
261 * Getters which need to be used on the current packet (between get/put
262 * or get_next/put_next.
265 int lttng_ust_ctl_get_timestamp_begin(struct lttng_ust_ctl_consumer_stream *stream,
266 uint64_t *timestamp_begin);
267 int lttng_ust_ctl_get_timestamp_end(struct lttng_ust_ctl_consumer_stream *stream,
268 uint64_t *timestamp_end);
269 int lttng_ust_ctl_get_events_discarded(struct lttng_ust_ctl_consumer_stream *stream,
270 uint64_t *events_discarded);
271 int lttng_ust_ctl_get_content_size(struct lttng_ust_ctl_consumer_stream *stream,
272 uint64_t *content_size);
273 int lttng_ust_ctl_get_packet_size(struct lttng_ust_ctl_consumer_stream *stream,
274 uint64_t *packet_size);
275 int lttng_ust_ctl_get_sequence_number(struct lttng_ust_ctl_consumer_stream *stream,
279 * Getter returning state invariant for the stream, which can be used
280 * without "get" operation.
283 int lttng_ust_ctl_get_stream_id(struct lttng_ust_ctl_consumer_stream *stream,
284 uint64_t *stream_id);
285 int lttng_ust_ctl_get_instance_id(struct lttng_ust_ctl_consumer_stream *stream,
289 * Getter returning the current timestamp as perceived from the
292 int lttng_ust_ctl_get_current_timestamp(struct lttng_ust_ctl_consumer_stream *stream,
295 /* returns whether UST has perf counters support. */
296 int lttng_ust_ctl_has_perf_counters(void);
298 /* Regenerate the statedump. */
299 int lttng_ust_ctl_regenerate_statedump(int sock, int handle);
301 /* event registry management */
303 enum lttng_ust_ctl_socket_type {
304 LTTNG_UST_CTL_SOCKET_CMD = 0,
305 LTTNG_UST_CTL_SOCKET_NOTIFY = 1,
308 enum lttng_ust_ctl_notify_cmd {
309 LTTNG_UST_CTL_NOTIFY_CMD_EVENT = 0,
310 LTTNG_UST_CTL_NOTIFY_CMD_CHANNEL = 1,
311 LTTNG_UST_CTL_NOTIFY_CMD_ENUM = 2,
314 enum lttng_ust_ctl_channel_header {
315 LTTNG_UST_CTL_CHANNEL_HEADER_UNKNOWN = 0,
316 LTTNG_UST_CTL_CHANNEL_HEADER_COMPACT = 1,
317 LTTNG_UST_CTL_CHANNEL_HEADER_LARGE = 2,
320 /* event type structures */
322 enum lttng_ust_ctl_abstract_types {
323 lttng_ust_ctl_atype_integer,
324 lttng_ust_ctl_atype_enum, /* legacy */
325 lttng_ust_ctl_atype_array, /* legacy */
326 lttng_ust_ctl_atype_sequence, /* legacy */
327 lttng_ust_ctl_atype_string,
328 lttng_ust_ctl_atype_float,
329 lttng_ust_ctl_atype_variant, /* legacy */
330 lttng_ust_ctl_atype_struct, /* legacy */
331 lttng_ust_ctl_atype_enum_nestable,
332 lttng_ust_ctl_atype_array_nestable,
333 lttng_ust_ctl_atype_sequence_nestable,
334 lttng_ust_ctl_atype_struct_nestable,
335 lttng_ust_ctl_atype_variant_nestable,
336 NR_LTTNG_UST_CTL_ABSTRACT_TYPES,
339 enum lttng_ust_ctl_string_encodings {
340 lttng_ust_ctl_encode_none = 0,
341 lttng_ust_ctl_encode_UTF8 = 1,
342 lttng_ust_ctl_encode_ASCII = 2,
343 NR_LTTNG_UST_CTL_STRING_ENCODINGS,
346 #define LTTNG_UST_CTL_UST_INTEGER_TYPE_PADDING 24
347 struct lttng_ust_ctl_integer_type {
348 uint32_t size; /* in bits */
350 uint32_t reverse_byte_order;
351 uint32_t base; /* 2, 8, 10, 16, for pretty print */
352 int32_t encoding; /* enum lttng_ust_ctl_string_encodings */
353 uint16_t alignment; /* in bits */
354 char padding[LTTNG_UST_CTL_UST_INTEGER_TYPE_PADDING];
357 #define LTTNG_UST_CTL_UST_FLOAT_TYPE_PADDING 24
358 struct lttng_ust_ctl_float_type {
359 uint32_t exp_dig; /* exponent digits, in bits */
360 uint32_t mant_dig; /* mantissa digits, in bits */
361 uint32_t reverse_byte_order;
362 uint16_t alignment; /* in bits */
363 char padding[LTTNG_UST_CTL_UST_FLOAT_TYPE_PADDING];
366 #define LTTNG_UST_CTL_UST_ENUM_VALUE_PADDING 15
367 struct lttng_ust_ctl_enum_value {
370 char padding[LTTNG_UST_CTL_UST_ENUM_VALUE_PADDING];
373 enum lttng_ust_ctl_ust_enum_entry_options {
374 LTTNG_UST_CTL_UST_ENUM_ENTRY_OPTION_IS_AUTO = 1U << 0,
377 #define LTTNG_UST_CTL_UST_ENUM_ENTRY_PADDING 32
378 struct lttng_ust_ctl_enum_entry {
379 struct lttng_ust_ctl_enum_value start, end; /* start and end are inclusive */
380 char string[LTTNG_UST_ABI_SYM_NAME_LEN];
384 } LTTNG_PACKED extra;
385 char padding[LTTNG_UST_CTL_UST_ENUM_ENTRY_PADDING];
390 #define LTTNG_UST_CTL_UST_BASIC_TYPE_PADDING 296
391 union _lttng_ust_ctl_basic_type {
392 struct lttng_ust_ctl_integer_type integer;
394 char name[LTTNG_UST_ABI_SYM_NAME_LEN];
395 struct lttng_ust_ctl_integer_type container_type;
396 uint64_t id; /* enum ID in sessiond. */
399 int32_t encoding; /* enum lttng_ust_ctl_string_encodings */
401 struct lttng_ust_ctl_float_type _float;
402 char padding[LTTNG_UST_CTL_UST_BASIC_TYPE_PADDING];
406 struct lttng_ust_ctl_basic_type {
407 enum lttng_ust_ctl_abstract_types atype;
409 union _lttng_ust_ctl_basic_type basic;
414 * Padding is derived from largest member: u.legacy.sequence which
415 * contains two basic types, each with LTTNG_UST_CTL_UST_BASIC_TYPE_PADDING.
417 #define LTTNG_UST_CTL_UST_TYPE_PADDING (2 * LTTNG_UST_CTL_UST_BASIC_TYPE_PADDING)
418 struct lttng_ust_ctl_type {
419 enum lttng_ust_ctl_abstract_types atype;
421 struct lttng_ust_ctl_integer_type integer;
422 struct lttng_ust_ctl_float_type _float;
424 int32_t encoding; /* enum lttng_ust_ctl_string_encodings */
427 char name[LTTNG_UST_ABI_SYM_NAME_LEN];
428 uint64_t id; /* enum ID in sessiond. */
429 /* container_type follows after this struct lttng_ust_ctl_field. */
432 uint32_t length; /* num. elems. */
434 /* elem_type follows after this struct lttng_ust_ctl_field. */
437 char length_name[LTTNG_UST_ABI_SYM_NAME_LEN];
438 uint32_t alignment; /* Alignment before elements. */
439 /* elem_type follows after the length_type. */
444 /* Followed by nr_fields struct lttng_ust_ctl_field. */
448 char tag_name[LTTNG_UST_ABI_SYM_NAME_LEN];
450 /* Followed by nr_choices struct lttng_ust_ctl_field. */
455 union _lttng_ust_ctl_basic_type basic;
457 struct lttng_ust_ctl_basic_type elem_type;
458 uint32_t length; /* num. elems. */
461 struct lttng_ust_ctl_basic_type length_type;
462 struct lttng_ust_ctl_basic_type elem_type;
466 /* Followed by nr_fields struct lttng_ust_ctl_field. */
470 char tag_name[LTTNG_UST_ABI_SYM_NAME_LEN];
471 /* Followed by nr_choices struct lttng_ust_ctl_field. */
474 char padding[LTTNG_UST_CTL_UST_TYPE_PADDING];
478 #define LTTNG_UST_CTL_UST_FIELD_PADDING 28
479 struct lttng_ust_ctl_field {
480 char name[LTTNG_UST_ABI_SYM_NAME_LEN];
481 struct lttng_ust_ctl_type type;
482 char padding[LTTNG_UST_CTL_UST_FIELD_PADDING];
486 * Returns 0 on success, negative error value on error.
487 * If an error other than -LTTNG_UST_ERR_UNSUP_MAJOR is returned,
488 * the output fields are not populated.
490 int lttng_ust_ctl_recv_reg_msg(int sock,
491 enum lttng_ust_ctl_socket_type *type,
498 uint32_t *bits_per_long,
499 uint32_t *uint8_t_alignment,
500 uint32_t *uint16_t_alignment,
501 uint32_t *uint32_t_alignment,
502 uint32_t *uint64_t_alignment,
503 uint32_t *long_alignment,
505 char *name); /* size LTTNG_UST_ABI_PROCNAME_LEN */
508 * Returns 0 on success, negative UST or system error value on error.
509 * Receive the notification command. The "notify_cmd" can then be used
510 * by the caller to find out which lttng_ust_ctl_recv_* function should be
511 * called to receive the notification, and which lttng_ust_ctl_reply_* is
514 int lttng_ust_ctl_recv_notify(int sock, enum lttng_ust_ctl_notify_cmd *notify_cmd);
517 * Returns 0 on success, negative UST or system error value on error.
519 int lttng_ust_ctl_recv_register_event(int sock,
520 int *session_objd, /* session descriptor (output) */
521 int *channel_objd, /* channel descriptor (output) */
523 * event name (output,
524 * size LTTNG_UST_ABI_SYM_NAME_LEN)
529 * (output, dynamically
530 * allocated, must be free(3)'d
531 * by the caller if function
535 struct lttng_ust_ctl_field **fields,
536 char **model_emf_uri);
539 * Returns 0 on success, negative error value on error.
541 int lttng_ust_ctl_reply_register_event(int sock,
542 uint32_t id, /* event id (input) */
543 int ret_code); /* return code. 0 ok, negative error */
546 * Returns 0 on success, negative UST or system error value on error.
548 int lttng_ust_ctl_recv_register_enum(int sock,
551 struct lttng_ust_ctl_enum_entry **entries,
555 * Returns 0 on success, negative error value on error.
557 int lttng_ust_ctl_reply_register_enum(int sock,
558 uint64_t id, /* enum id (input) */
562 * Returns 0 on success, negative UST or system error value on error.
564 int lttng_ust_ctl_recv_register_channel(int sock,
565 int *session_objd, /* session descriptor (output) */
566 int *channel_objd, /* channel descriptor (output) */
567 size_t *nr_fields, /* context fields */
568 struct lttng_ust_ctl_field **fields);
571 * Returns 0 on success, negative error value on error.
573 int lttng_ust_ctl_reply_register_channel(int sock,
575 enum lttng_ust_ctl_channel_header header_type,
576 int ret_code); /* return code. 0 ok, negative error */
582 enum lttng_ust_ctl_counter_bitness {
583 LTTNG_UST_CTL_COUNTER_BITNESS_32 = 0,
584 LTTNG_UST_CTL_COUNTER_BITNESS_64 = 1,
587 enum lttng_ust_ctl_counter_arithmetic {
588 LTTNG_UST_CTL_COUNTER_ARITHMETIC_MODULAR = 0,
589 LTTNG_UST_CTL_COUNTER_ARITHMETIC_SATURATION = 1,
592 /* Used as alloc flags. */
593 enum lttng_ust_ctl_counter_alloc {
594 LTTNG_UST_CTL_COUNTER_ALLOC_PER_CPU = (1 << 0),
595 LTTNG_UST_CTL_COUNTER_ALLOC_GLOBAL = (1 << 1),
598 struct lttng_ust_ctl_daemon_counter;
600 int lttng_ust_ctl_get_nr_cpu_per_counter(void);
602 struct lttng_ust_ctl_counter_dimension {
604 uint64_t underflow_index;
605 uint64_t overflow_index;
606 uint8_t has_underflow;
607 uint8_t has_overflow;
610 struct lttng_ust_ctl_daemon_counter *
611 lttng_ust_ctl_create_counter(size_t nr_dimensions,
612 const struct lttng_ust_ctl_counter_dimension *dimensions,
613 int64_t global_sum_step,
614 int global_counter_fd,
615 int nr_counter_cpu_fds,
616 const int *counter_cpu_fds,
617 enum lttng_ust_ctl_counter_bitness bitness,
618 enum lttng_ust_ctl_counter_arithmetic arithmetic,
619 uint32_t alloc_flags,
622 int lttng_ust_ctl_create_counter_data(struct lttng_ust_ctl_daemon_counter *counter,
623 struct lttng_ust_abi_object_data **counter_data);
625 int lttng_ust_ctl_create_counter_global_data(struct lttng_ust_ctl_daemon_counter *counter,
626 struct lttng_ust_abi_object_data **counter_global_data);
627 int lttng_ust_ctl_create_counter_cpu_data(struct lttng_ust_ctl_daemon_counter *counter, int cpu,
628 struct lttng_ust_abi_object_data **counter_cpu_data);
631 * Each counter data and counter cpu data created need to be destroyed
632 * before calling lttng_ust_ctl_destroy_counter().
634 void lttng_ust_ctl_destroy_counter(struct lttng_ust_ctl_daemon_counter *counter);
636 int lttng_ust_ctl_send_counter_data_to_ust(int sock, int parent_handle,
637 struct lttng_ust_abi_object_data *counter_data);
638 int lttng_ust_ctl_send_counter_global_data_to_ust(int sock,
639 struct lttng_ust_abi_object_data *counter_data,
640 struct lttng_ust_abi_object_data *counter_global_data);
641 int lttng_ust_ctl_send_counter_cpu_data_to_ust(int sock,
642 struct lttng_ust_abi_object_data *counter_data,
643 struct lttng_ust_abi_object_data *counter_cpu_data);
645 int lttng_ust_ctl_counter_read(struct lttng_ust_ctl_daemon_counter *counter,
646 const size_t *dimension_indexes,
647 int cpu, int64_t *value,
648 bool *overflow, bool *underflow);
649 int lttng_ust_ctl_counter_aggregate(struct lttng_ust_ctl_daemon_counter *counter,
650 const size_t *dimension_indexes,
652 bool *overflow, bool *underflow);
653 int lttng_ust_ctl_counter_clear(struct lttng_ust_ctl_daemon_counter *counter,
654 const size_t *dimension_indexes);
656 void lttng_ust_ctl_sigbus_handle(void *addr);
658 #endif /* LTTNG_UST_CTL_INTERNAL_H */