2 * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
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.h"
21 #ifndef LTTNG_UST_UUID_LEN
22 #define LTTNG_UST_UUID_LEN 16
25 /* Default unix socket path */
26 #define LTTNG_UST_SOCK_FILENAME \
28 __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE)
31 * Shared memory files path are automatically related to shm root, e.g.
32 * /dev/shm under linux.
34 #define LTTNG_UST_WAIT_FILENAME \
36 __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE)
38 struct lttng_ust_shm_handle
;
39 struct lttng_ust_lib_ring_buffer
;
41 struct lttng_ust_ctl_consumer_channel_attr
{
42 enum lttng_ust_abi_chan_type type
;
43 uint64_t subbuf_size
; /* bytes */
44 uint64_t num_subbuf
; /* power of 2 */
45 int overwrite
; /* 1: overwrite, 0: discard */
46 unsigned int switch_timer_interval
; /* usec */
47 unsigned int read_timer_interval
; /* usec */
48 enum lttng_ust_abi_output output
; /* splice, mmap */
49 uint32_t chan_id
; /* channel ID */
50 unsigned char uuid
[LTTNG_UST_UUID_LEN
]; /* Trace session unique ID */
51 int64_t blocking_timeout
; /* Blocking timeout (usec) */
55 * API used by sessiond.
58 struct lttng_ust_context_attr
{
59 enum lttng_ust_abi_context_type ctx
;
61 struct lttng_ust_abi_perf_counter_ctx perf_counter
;
70 * Error values: all the following functions return:
71 * >= 0: Success (LTTNG_UST_OK)
74 int lttng_ust_ctl_register_done(int sock
);
75 int lttng_ust_ctl_create_session(int sock
);
76 int lttng_ust_ctl_create_event(int sock
, struct lttng_ust_abi_event
*ev
,
77 struct lttng_ust_abi_object_data
*channel_data
,
78 struct lttng_ust_abi_object_data
**event_data
);
79 int lttng_ust_ctl_add_context(int sock
, struct lttng_ust_context_attr
*ctx
,
80 struct lttng_ust_abi_object_data
*obj_data
,
81 struct lttng_ust_abi_object_data
**context_data
);
82 int lttng_ust_ctl_set_filter(int sock
, struct lttng_ust_abi_filter_bytecode
*bytecode
,
83 struct lttng_ust_abi_object_data
*obj_data
);
84 int lttng_ust_ctl_set_capture(int sock
, struct lttng_ust_abi_capture_bytecode
*bytecode
,
85 struct lttng_ust_abi_object_data
*obj_data
);
86 int lttng_ust_ctl_set_exclusion(int sock
, struct lttng_ust_abi_event_exclusion
*exclusion
,
87 struct lttng_ust_abi_object_data
*obj_data
);
89 int lttng_ust_ctl_enable(int sock
, struct lttng_ust_abi_object_data
*object
);
90 int lttng_ust_ctl_disable(int sock
, struct lttng_ust_abi_object_data
*object
);
91 int lttng_ust_ctl_start_session(int sock
, int handle
);
92 int lttng_ust_ctl_stop_session(int sock
, int handle
);
95 * lttng_ust_ctl_create_event notifier_group creates a event notifier group. It
96 * establishes the connection with the application by providing a file
97 * descriptor of the pipe to be used by the application when a event notifier
98 * of that group is fired. It returns a handle to be used when creating event
99 * notifier in that group.
101 int lttng_ust_ctl_create_event_notifier_group(int sock
, int pipe_fd
,
102 struct lttng_ust_abi_object_data
**event_notifier_group
);
105 * lttng_ust_ctl_create_event notifier creates a event notifier in a event notifier
106 * group giving a event notifier description and a event notifier group handle.
107 * It returns a event notifier handle to be used when enabling the event
108 * notifier, attaching filter, attaching exclusion, and disabling the event
111 int lttng_ust_ctl_create_event_notifier(int sock
,
112 struct lttng_ust_abi_event_notifier
*event_notifier
,
113 struct lttng_ust_abi_object_data
*event_notifier_group
,
114 struct lttng_ust_abi_object_data
**event_notifier_data
);
117 * lttng_ust_ctl_tracepoint_list returns a tracepoint list handle, or negative
120 int lttng_ust_ctl_tracepoint_list(int sock
);
123 * lttng_ust_ctl_tracepoint_list_get is used to iterate on the tp list
124 * handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is
127 int lttng_ust_ctl_tracepoint_list_get(int sock
, int tp_list_handle
,
128 struct lttng_ust_abi_tracepoint_iter
*iter
);
131 * lttng_ust_ctl_tracepoint_field_list returns a tracepoint field list handle,
132 * or negative error value.
134 int lttng_ust_ctl_tracepoint_field_list(int sock
);
137 * lttng_ust_ctl_tracepoint_field_list_get is used to iterate on the tp field
138 * list handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is
141 int lttng_ust_ctl_tracepoint_field_list_get(int sock
, int tp_field_list_handle
,
142 struct lttng_ust_abi_field_iter
*iter
);
144 int lttng_ust_ctl_tracer_version(int sock
, struct lttng_ust_abi_tracer_version
*v
);
145 int lttng_ust_ctl_wait_quiescent(int sock
);
147 int lttng_ust_ctl_sock_flush_buffer(int sock
, struct lttng_ust_abi_object_data
*object
);
149 int lttng_ust_ctl_calibrate(int sock
, struct lttng_ust_abi_calibrate
*calibrate
);
151 /* Release object created by members of this API. */
152 int lttng_ust_ctl_release_object(int sock
, struct lttng_ust_abi_object_data
*data
);
153 /* Release handle returned by create session. */
154 int lttng_ust_ctl_release_handle(int sock
, int handle
);
156 int lttng_ust_ctl_recv_channel_from_consumer(int sock
,
157 struct lttng_ust_abi_object_data
**channel_data
);
158 int lttng_ust_ctl_recv_stream_from_consumer(int sock
,
159 struct lttng_ust_abi_object_data
**stream_data
);
160 int lttng_ust_ctl_send_channel_to_ust(int sock
, int session_handle
,
161 struct lttng_ust_abi_object_data
*channel_data
);
162 int lttng_ust_ctl_send_stream_to_ust(int sock
,
163 struct lttng_ust_abi_object_data
*channel_data
,
164 struct lttng_ust_abi_object_data
*stream_data
);
167 * lttng_ust_ctl_duplicate_ust_object_data allocated a new object in "dest" if
168 * it succeeds (returns 0). It must be released using
169 * lttng_ust_ctl_release_object() and then freed with free().
171 int lttng_ust_ctl_duplicate_ust_object_data(struct lttng_ust_abi_object_data
**dest
,
172 struct lttng_ust_abi_object_data
*src
);
175 * API used by consumer.
178 struct lttng_ust_ctl_consumer_channel
;
179 struct lttng_ust_ctl_consumer_stream
;
180 struct lttng_ust_ctl_consumer_channel_attr
;
182 int lttng_ust_ctl_get_nr_stream_per_channel(void);
184 struct lttng_ust_ctl_consumer_channel
*
185 lttng_ust_ctl_create_channel(struct lttng_ust_ctl_consumer_channel_attr
*attr
,
186 const int *stream_fds
, int nr_stream_fds
);
188 * Each stream created needs to be destroyed before calling
189 * lttng_ust_ctl_destroy_channel().
191 void lttng_ust_ctl_destroy_channel(struct lttng_ust_ctl_consumer_channel
*chan
);
193 int lttng_ust_ctl_send_channel_to_sessiond(int sock
,
194 struct lttng_ust_ctl_consumer_channel
*channel
);
195 int lttng_ust_ctl_channel_close_wait_fd(struct lttng_ust_ctl_consumer_channel
*consumer_chan
);
196 int lttng_ust_ctl_channel_close_wakeup_fd(struct lttng_ust_ctl_consumer_channel
*consumer_chan
);
197 int lttng_ust_ctl_channel_get_wait_fd(struct lttng_ust_ctl_consumer_channel
*consumer_chan
);
198 int lttng_ust_ctl_channel_get_wakeup_fd(struct lttng_ust_ctl_consumer_channel
*consumer_chan
);
200 int lttng_ust_ctl_write_metadata_to_channel(
201 struct lttng_ust_ctl_consumer_channel
*channel
,
202 const char *metadata_str
, /* NOT null-terminated */
203 size_t len
); /* metadata length */
204 ssize_t
lttng_ust_ctl_write_one_packet_to_channel(
205 struct lttng_ust_ctl_consumer_channel
*channel
,
206 const char *metadata_str
, /* NOT null-terminated */
207 size_t len
); /* metadata length */
210 * Send a NULL stream to finish iteration over all streams of a given
213 int lttng_ust_ctl_send_stream_to_sessiond(int sock
,
214 struct lttng_ust_ctl_consumer_stream
*stream
);
215 int lttng_ust_ctl_stream_close_wait_fd(struct lttng_ust_ctl_consumer_stream
*stream
);
216 int lttng_ust_ctl_stream_close_wakeup_fd(struct lttng_ust_ctl_consumer_stream
*stream
);
217 int lttng_ust_ctl_stream_get_wait_fd(struct lttng_ust_ctl_consumer_stream
*stream
);
218 int lttng_ust_ctl_stream_get_wakeup_fd(struct lttng_ust_ctl_consumer_stream
*stream
);
220 /* Create/destroy stream buffers for read */
221 struct lttng_ust_ctl_consumer_stream
*
222 lttng_ust_ctl_create_stream(struct lttng_ust_ctl_consumer_channel
*channel
,
224 void lttng_ust_ctl_destroy_stream(struct lttng_ust_ctl_consumer_stream
*stream
);
226 /* For mmap mode, readable without "get" operation */
227 int lttng_ust_ctl_get_mmap_len(struct lttng_ust_ctl_consumer_stream
*stream
,
229 int lttng_ust_ctl_get_max_subbuf_size(struct lttng_ust_ctl_consumer_stream
*stream
,
233 * For mmap mode, operate on the current packet (between get/put or
234 * get_next/put_next).
236 void *lttng_ust_ctl_get_mmap_base(struct lttng_ust_ctl_consumer_stream
*stream
);
237 int lttng_ust_ctl_get_mmap_read_offset(struct lttng_ust_ctl_consumer_stream
*stream
,
239 int lttng_ust_ctl_get_subbuf_size(struct lttng_ust_ctl_consumer_stream
*stream
,
241 int lttng_ust_ctl_get_padded_subbuf_size(struct lttng_ust_ctl_consumer_stream
*stream
,
243 int lttng_ust_ctl_get_next_subbuf(struct lttng_ust_ctl_consumer_stream
*stream
);
244 int lttng_ust_ctl_put_next_subbuf(struct lttng_ust_ctl_consumer_stream
*stream
);
248 int lttng_ust_ctl_snapshot(struct lttng_ust_ctl_consumer_stream
*stream
);
249 int lttng_ust_ctl_snapshot_sample_positions(struct lttng_ust_ctl_consumer_stream
*stream
);
250 int lttng_ust_ctl_snapshot_get_consumed(struct lttng_ust_ctl_consumer_stream
*stream
,
252 int lttng_ust_ctl_snapshot_get_produced(struct lttng_ust_ctl_consumer_stream
*stream
,
254 int lttng_ust_ctl_get_subbuf(struct lttng_ust_ctl_consumer_stream
*stream
,
256 int lttng_ust_ctl_put_subbuf(struct lttng_ust_ctl_consumer_stream
*stream
);
258 int lttng_ust_ctl_flush_buffer(struct lttng_ust_ctl_consumer_stream
*stream
,
259 int producer_active
);
260 int lttng_ust_ctl_clear_buffer(struct lttng_ust_ctl_consumer_stream
*stream
);
265 * Getters which need to be used on the current packet (between get/put
266 * or get_next/put_next.
269 int lttng_ust_ctl_get_timestamp_begin(struct lttng_ust_ctl_consumer_stream
*stream
,
270 uint64_t *timestamp_begin
);
271 int lttng_ust_ctl_get_timestamp_end(struct lttng_ust_ctl_consumer_stream
*stream
,
272 uint64_t *timestamp_end
);
273 int lttng_ust_ctl_get_events_discarded(struct lttng_ust_ctl_consumer_stream
*stream
,
274 uint64_t *events_discarded
);
275 int lttng_ust_ctl_get_content_size(struct lttng_ust_ctl_consumer_stream
*stream
,
276 uint64_t *content_size
);
277 int lttng_ust_ctl_get_packet_size(struct lttng_ust_ctl_consumer_stream
*stream
,
278 uint64_t *packet_size
);
279 int lttng_ust_ctl_get_sequence_number(struct lttng_ust_ctl_consumer_stream
*stream
,
283 * Getter returning state invariant for the stream, which can be used
284 * without "get" operation.
287 int lttng_ust_ctl_get_stream_id(struct lttng_ust_ctl_consumer_stream
*stream
,
288 uint64_t *stream_id
);
289 int lttng_ust_ctl_get_instance_id(struct lttng_ust_ctl_consumer_stream
*stream
,
293 * Getter returning the current timestamp as perceived from the
296 int lttng_ust_ctl_get_current_timestamp(struct lttng_ust_ctl_consumer_stream
*stream
,
299 /* returns whether UST has perf counters support. */
300 int lttng_ust_ctl_has_perf_counters(void);
302 /* Regenerate the statedump. */
303 int lttng_ust_ctl_regenerate_statedump(int sock
, int handle
);
305 /* event registry management */
307 enum lttng_ust_ctl_socket_type
{
308 LTTNG_UST_CTL_SOCKET_CMD
= 0,
309 LTTNG_UST_CTL_SOCKET_NOTIFY
= 1,
312 enum lttng_ust_ctl_notify_cmd
{
313 LTTNG_UST_CTL_NOTIFY_CMD_EVENT
= 0,
314 LTTNG_UST_CTL_NOTIFY_CMD_CHANNEL
= 1,
315 LTTNG_UST_CTL_NOTIFY_CMD_ENUM
= 2,
318 enum lttng_ust_ctl_channel_header
{
319 LTTNG_UST_CTL_CHANNEL_HEADER_UNKNOWN
= 0,
320 LTTNG_UST_CTL_CHANNEL_HEADER_COMPACT
= 1,
321 LTTNG_UST_CTL_CHANNEL_HEADER_LARGE
= 2,
324 /* event type structures */
326 enum lttng_ust_ctl_abstract_types
{
327 lttng_ust_ctl_atype_integer
,
328 lttng_ust_ctl_atype_enum
, /* legacy */
329 lttng_ust_ctl_atype_array
, /* legacy */
330 lttng_ust_ctl_atype_sequence
, /* legacy */
331 lttng_ust_ctl_atype_string
,
332 lttng_ust_ctl_atype_float
,
333 lttng_ust_ctl_atype_variant
, /* legacy */
334 lttng_ust_ctl_atype_struct
, /* legacy */
335 lttng_ust_ctl_atype_enum_nestable
,
336 lttng_ust_ctl_atype_array_nestable
,
337 lttng_ust_ctl_atype_sequence_nestable
,
338 lttng_ust_ctl_atype_struct_nestable
,
339 lttng_ust_ctl_atype_variant_nestable
,
340 NR_LTTNG_UST_CTL_ABSTRACT_TYPES
,
343 enum lttng_ust_ctl_string_encodings
{
344 lttng_ust_ctl_encode_none
= 0,
345 lttng_ust_ctl_encode_UTF8
= 1,
346 lttng_ust_ctl_encode_ASCII
= 2,
347 NR_LTTNG_UST_CTL_STRING_ENCODINGS
,
350 #define LTTNG_UST_CTL_UST_INTEGER_TYPE_PADDING 24
351 struct lttng_ust_ctl_integer_type
{
352 uint32_t size
; /* in bits */
354 uint32_t reverse_byte_order
;
355 uint32_t base
; /* 2, 8, 10, 16, for pretty print */
356 int32_t encoding
; /* enum lttng_ust_ctl_string_encodings */
357 uint16_t alignment
; /* in bits */
358 char padding
[LTTNG_UST_CTL_UST_INTEGER_TYPE_PADDING
];
361 #define LTTNG_UST_CTL_UST_FLOAT_TYPE_PADDING 24
362 struct lttng_ust_ctl_float_type
{
363 uint32_t exp_dig
; /* exponent digits, in bits */
364 uint32_t mant_dig
; /* mantissa digits, in bits */
365 uint32_t reverse_byte_order
;
366 uint16_t alignment
; /* in bits */
367 char padding
[LTTNG_UST_CTL_UST_FLOAT_TYPE_PADDING
];
370 #define LTTNG_UST_CTL_UST_ENUM_VALUE_PADDING 15
371 struct lttng_ust_ctl_enum_value
{
374 char padding
[LTTNG_UST_CTL_UST_ENUM_VALUE_PADDING
];
377 enum lttng_ust_ctl_ust_enum_entry_options
{
378 LTTNG_UST_CTL_UST_ENUM_ENTRY_OPTION_IS_AUTO
= 1U << 0,
381 #define LTTNG_UST_CTL_UST_ENUM_ENTRY_PADDING 32
382 struct lttng_ust_ctl_enum_entry
{
383 struct lttng_ust_ctl_enum_value start
, end
; /* start and end are inclusive */
384 char string
[LTTNG_UST_ABI_SYM_NAME_LEN
];
388 } LTTNG_PACKED extra
;
389 char padding
[LTTNG_UST_CTL_UST_ENUM_ENTRY_PADDING
];
394 #define LTTNG_UST_CTL_UST_BASIC_TYPE_PADDING 296
395 union _lttng_ust_ctl_basic_type
{
396 struct lttng_ust_ctl_integer_type integer
;
398 char name
[LTTNG_UST_ABI_SYM_NAME_LEN
];
399 struct lttng_ust_ctl_integer_type container_type
;
400 uint64_t id
; /* enum ID in sessiond. */
403 int32_t encoding
; /* enum lttng_ust_ctl_string_encodings */
405 struct lttng_ust_ctl_float_type _float
;
406 char padding
[LTTNG_UST_CTL_UST_BASIC_TYPE_PADDING
];
410 struct lttng_ust_ctl_basic_type
{
411 enum lttng_ust_ctl_abstract_types atype
;
413 union _lttng_ust_ctl_basic_type basic
;
418 * Padding is derived from largest member: u.legacy.sequence which
419 * contains two basic types, each with LTTNG_UST_CTL_UST_BASIC_TYPE_PADDING.
421 #define LTTNG_UST_CTL_UST_TYPE_PADDING (2 * LTTNG_UST_CTL_UST_BASIC_TYPE_PADDING)
422 struct lttng_ust_ctl_type
{
423 enum lttng_ust_ctl_abstract_types atype
;
425 struct lttng_ust_ctl_integer_type integer
;
426 struct lttng_ust_ctl_float_type _float
;
428 int32_t encoding
; /* enum lttng_ust_ctl_string_encodings */
431 char name
[LTTNG_UST_ABI_SYM_NAME_LEN
];
432 uint64_t id
; /* enum ID in sessiond. */
433 /* container_type follows after this struct lttng_ust_ctl_field. */
436 uint32_t length
; /* num. elems. */
438 /* elem_type follows after this struct lttng_ust_ctl_field. */
441 char length_name
[LTTNG_UST_ABI_SYM_NAME_LEN
];
442 uint32_t alignment
; /* Alignment before elements. */
443 /* elem_type follows after the length_type. */
448 /* Followed by nr_fields struct lttng_ust_ctl_field. */
452 char tag_name
[LTTNG_UST_ABI_SYM_NAME_LEN
];
454 /* Followed by nr_choices struct lttng_ust_ctl_field. */
459 union _lttng_ust_ctl_basic_type basic
;
461 struct lttng_ust_ctl_basic_type elem_type
;
462 uint32_t length
; /* num. elems. */
465 struct lttng_ust_ctl_basic_type length_type
;
466 struct lttng_ust_ctl_basic_type elem_type
;
470 /* Followed by nr_fields struct lttng_ust_ctl_field. */
474 char tag_name
[LTTNG_UST_ABI_SYM_NAME_LEN
];
475 /* Followed by nr_choices struct lttng_ust_ctl_field. */
478 char padding
[LTTNG_UST_CTL_UST_TYPE_PADDING
];
482 #define LTTNG_UST_CTL_UST_FIELD_PADDING 28
483 struct lttng_ust_ctl_field
{
484 char name
[LTTNG_UST_ABI_SYM_NAME_LEN
];
485 struct lttng_ust_ctl_type type
;
486 char padding
[LTTNG_UST_CTL_UST_FIELD_PADDING
];
490 * Returns 0 on success, negative error value on error.
491 * If an error other than -LTTNG_UST_ERR_UNSUP_MAJOR is returned,
492 * the output fields are not populated.
494 int lttng_ust_ctl_recv_reg_msg(int sock
,
495 enum lttng_ust_ctl_socket_type
*type
,
502 uint32_t *bits_per_long
,
503 uint32_t *uint8_t_alignment
,
504 uint32_t *uint16_t_alignment
,
505 uint32_t *uint32_t_alignment
,
506 uint32_t *uint64_t_alignment
,
507 uint32_t *long_alignment
,
509 char *name
); /* size LTTNG_UST_ABI_PROCNAME_LEN */
512 * Returns 0 on success, negative UST or system error value on error.
513 * Receive the notification command. The "notify_cmd" can then be used
514 * by the caller to find out which lttng_ust_ctl_recv_* function should be
515 * called to receive the notification, and which lttng_ust_ctl_reply_* is
518 int lttng_ust_ctl_recv_notify(int sock
, enum lttng_ust_ctl_notify_cmd
*notify_cmd
);
521 * Returns 0 on success, negative UST or system error value on error.
523 int lttng_ust_ctl_recv_register_event(int sock
,
524 int *session_objd
, /* session descriptor (output) */
525 int *channel_objd
, /* channel descriptor (output) */
527 * event name (output,
528 * size LTTNG_UST_ABI_SYM_NAME_LEN)
533 * (output, dynamically
534 * allocated, must be free(3)'d
535 * by the caller if function
539 struct lttng_ust_ctl_field
**fields
,
540 char **model_emf_uri
);
543 * Returns 0 on success, negative error value on error.
545 int lttng_ust_ctl_reply_register_event(int sock
,
546 uint32_t id
, /* event id (input) */
547 int ret_code
); /* return code. 0 ok, negative error */
550 * Returns 0 on success, negative UST or system error value on error.
552 int lttng_ust_ctl_recv_register_enum(int sock
,
555 struct lttng_ust_ctl_enum_entry
**entries
,
559 * Returns 0 on success, negative error value on error.
561 int lttng_ust_ctl_reply_register_enum(int sock
,
562 uint64_t id
, /* enum id (input) */
566 * Returns 0 on success, negative UST or system error value on error.
568 int lttng_ust_ctl_recv_register_channel(int sock
,
569 int *session_objd
, /* session descriptor (output) */
570 int *channel_objd
, /* channel descriptor (output) */
571 size_t *nr_fields
, /* context fields */
572 struct lttng_ust_ctl_field
**fields
);
575 * Returns 0 on success, negative error value on error.
577 int lttng_ust_ctl_reply_register_channel(int sock
,
579 enum lttng_ust_ctl_channel_header header_type
,
580 int ret_code
); /* return code. 0 ok, negative error */
586 enum lttng_ust_ctl_counter_bitness
{
587 LTTNG_UST_CTL_COUNTER_BITNESS_32
= 0,
588 LTTNG_UST_CTL_COUNTER_BITNESS_64
= 1,
591 enum lttng_ust_ctl_counter_arithmetic
{
592 LTTNG_UST_CTL_COUNTER_ARITHMETIC_MODULAR
= 0,
593 LTTNG_UST_CTL_COUNTER_ARITHMETIC_SATURATION
= 1,
596 /* Used as alloc flags. */
597 enum lttng_ust_ctl_counter_alloc
{
598 LTTNG_UST_CTL_COUNTER_ALLOC_PER_CPU
= (1 << 0),
599 LTTNG_UST_CTL_COUNTER_ALLOC_GLOBAL
= (1 << 1),
602 struct lttng_ust_ctl_daemon_counter
;
604 int lttng_ust_ctl_get_nr_cpu_per_counter(void);
606 struct lttng_ust_ctl_counter_dimension
{
608 uint64_t underflow_index
;
609 uint64_t overflow_index
;
610 uint8_t has_underflow
;
611 uint8_t has_overflow
;
614 struct lttng_ust_ctl_daemon_counter
*
615 lttng_ust_ctl_create_counter(size_t nr_dimensions
,
616 const struct lttng_ust_ctl_counter_dimension
*dimensions
,
617 int64_t global_sum_step
,
618 int global_counter_fd
,
619 int nr_counter_cpu_fds
,
620 const int *counter_cpu_fds
,
621 enum lttng_ust_ctl_counter_bitness bitness
,
622 enum lttng_ust_ctl_counter_arithmetic arithmetic
,
623 uint32_t alloc_flags
,
626 int lttng_ust_ctl_create_counter_data(struct lttng_ust_ctl_daemon_counter
*counter
,
627 struct lttng_ust_abi_object_data
**counter_data
);
629 int lttng_ust_ctl_create_counter_global_data(struct lttng_ust_ctl_daemon_counter
*counter
,
630 struct lttng_ust_abi_object_data
**counter_global_data
);
631 int lttng_ust_ctl_create_counter_cpu_data(struct lttng_ust_ctl_daemon_counter
*counter
, int cpu
,
632 struct lttng_ust_abi_object_data
**counter_cpu_data
);
635 * Each counter data and counter cpu data created need to be destroyed
636 * before calling lttng_ust_ctl_destroy_counter().
638 void lttng_ust_ctl_destroy_counter(struct lttng_ust_ctl_daemon_counter
*counter
);
640 int lttng_ust_ctl_send_counter_data_to_ust(int sock
, int parent_handle
,
641 struct lttng_ust_abi_object_data
*counter_data
);
642 int lttng_ust_ctl_send_counter_global_data_to_ust(int sock
,
643 struct lttng_ust_abi_object_data
*counter_data
,
644 struct lttng_ust_abi_object_data
*counter_global_data
);
645 int lttng_ust_ctl_send_counter_cpu_data_to_ust(int sock
,
646 struct lttng_ust_abi_object_data
*counter_data
,
647 struct lttng_ust_abi_object_data
*counter_cpu_data
);
649 int lttng_ust_ctl_counter_read(struct lttng_ust_ctl_daemon_counter
*counter
,
650 const size_t *dimension_indexes
,
651 int cpu
, int64_t *value
,
652 bool *overflow
, bool *underflow
);
653 int lttng_ust_ctl_counter_aggregate(struct lttng_ust_ctl_daemon_counter
*counter
,
654 const size_t *dimension_indexes
,
656 bool *overflow
, bool *underflow
);
657 int lttng_ust_ctl_counter_clear(struct lttng_ust_ctl_daemon_counter
*counter
,
658 const size_t *dimension_indexes
);
660 void lttng_ust_ctl_sigbus_handle(void *addr
);
666 #endif /* LTTNG_UST_CTL_INTERNAL_H */