Commit | Line | Data |
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d871c65b | 1 | /* |
c0c0989a | 2 | * SPDX-License-Identifier: MIT |
d871c65b | 3 | * |
c0c0989a | 4 | * Copyright 2019 (c) Francis Deslauriers <francis.deslauriers@efficios.com> |
d871c65b FD |
5 | */ |
6 | ||
c0c0989a MJ |
7 | #ifndef _LTTNG_UST_EVENTS_INTERNAL_H |
8 | #define _LTTNG_UST_EVENTS_INTERNAL_H | |
9 | ||
d871c65b FD |
10 | #include <stdint.h> |
11 | ||
12 | #include <urcu/list.h> | |
13 | #include <urcu/hlist.h> | |
14 | ||
d871c65b FD |
15 | #include <lttng/ust-events.h> |
16 | ||
a084756d | 17 | #include <ust-helper.h> |
fa194c41 | 18 | #include "ust-context-provider.h" |
fd17d7ce MD |
19 | |
20 | struct lttng_ust_abi_obj; | |
06cd86a0 | 21 | struct lttng_event_notifier_group; |
fd17d7ce MD |
22 | |
23 | union lttng_ust_abi_args { | |
24 | struct { | |
25 | void *chan_data; | |
26 | int wakeup_fd; | |
27 | } channel; | |
28 | struct { | |
29 | int shm_fd; | |
30 | int wakeup_fd; | |
31 | } stream; | |
32 | struct { | |
33 | struct lttng_ust_abi_field_iter entry; | |
34 | } field_list; | |
35 | struct { | |
36 | char *ctxname; | |
37 | } app_context; | |
38 | struct { | |
39 | int event_notifier_notif_fd; | |
40 | } event_notifier_handle; | |
41 | struct { | |
42 | void *counter_data; | |
43 | } counter; | |
44 | struct { | |
45 | int shm_fd; | |
46 | } counter_shm; | |
47 | }; | |
48 | ||
49 | struct lttng_ust_abi_objd_ops { | |
50 | long (*cmd)(int objd, unsigned int cmd, unsigned long arg, | |
51 | union lttng_ust_abi_args *args, void *owner); | |
52 | int (*release)(int objd); | |
53 | }; | |
54 | ||
8665f6a4 MJ |
55 | enum lttng_enabler_format_type { |
56 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
57 | LTTNG_ENABLER_FORMAT_EVENT, | |
58 | }; | |
59 | ||
60 | /* | |
61 | * Enabler field, within whatever object is enabling an event. Target of | |
62 | * backward reference. | |
63 | */ | |
64 | struct lttng_enabler { | |
65 | enum lttng_enabler_format_type format_type; | |
66 | ||
67 | /* head list of struct lttng_ust_filter_bytecode_node */ | |
68 | struct cds_list_head filter_bytecode_head; | |
69 | /* head list of struct lttng_ust_excluder_node */ | |
70 | struct cds_list_head excluder_head; | |
71 | ||
fd17d7ce | 72 | struct lttng_ust_abi_event event_param; |
8665f6a4 MJ |
73 | unsigned int enabled:1; |
74 | }; | |
75 | ||
d871c65b FD |
76 | struct lttng_event_enabler { |
77 | struct lttng_enabler base; | |
78 | struct cds_list_head node; /* per-session list of enablers */ | |
e7bc0ef6 | 79 | struct lttng_ust_channel_buffer *chan; |
d871c65b FD |
80 | /* |
81 | * Unused, but kept around to make it explicit that the tracer can do | |
82 | * it. | |
83 | */ | |
daacdbfc | 84 | struct lttng_ust_ctx *ctx; |
d871c65b FD |
85 | }; |
86 | ||
d8d2416d FD |
87 | struct lttng_event_notifier_enabler { |
88 | struct lttng_enabler base; | |
6566528b | 89 | uint64_t error_counter_index; |
d37ecb3f FD |
90 | struct cds_list_head node; /* per-app list of event_notifier enablers */ |
91 | struct cds_list_head capture_bytecode_head; | |
d8d2416d FD |
92 | struct lttng_event_notifier_group *group; /* weak ref */ |
93 | uint64_t user_token; /* User-provided token */ | |
d37ecb3f | 94 | uint64_t num_captures; |
d8d2416d FD |
95 | }; |
96 | ||
22c30e27 MD |
97 | enum lttng_ust_bytecode_type { |
98 | LTTNG_UST_BYTECODE_TYPE_FILTER, | |
99 | LTTNG_UST_BYTECODE_TYPE_CAPTURE, | |
ab249ecf FD |
100 | }; |
101 | ||
102 | struct lttng_ust_bytecode_node { | |
22c30e27 | 103 | enum lttng_ust_bytecode_type type; |
92495593 FD |
104 | struct cds_list_head node; |
105 | struct lttng_enabler *enabler; | |
ab249ecf FD |
106 | struct { |
107 | uint32_t len; | |
108 | uint32_t reloc_offset; | |
109 | uint64_t seqnum; | |
110 | char data[]; | |
111 | } bc; | |
92495593 FD |
112 | }; |
113 | ||
a2e4d05e MD |
114 | /* |
115 | * Bytecode interpreter return value. | |
116 | */ | |
117 | enum lttng_ust_bytecode_interpreter_ret { | |
118 | LTTNG_UST_BYTECODE_INTERPRETER_ERROR = -1, | |
119 | LTTNG_UST_BYTECODE_INTERPRETER_OK = 0, | |
120 | }; | |
121 | ||
122 | struct lttng_interpreter_output; | |
123 | struct lttng_ust_bytecode_runtime_private; | |
124 | ||
125 | enum lttng_ust_bytecode_filter_result { | |
126 | LTTNG_UST_BYTECODE_FILTER_ACCEPT = 0, | |
127 | LTTNG_UST_BYTECODE_FILTER_REJECT = 1, | |
128 | }; | |
129 | ||
130 | struct lttng_ust_bytecode_filter_ctx { | |
131 | enum lttng_ust_bytecode_filter_result result; | |
132 | }; | |
133 | ||
92495593 FD |
134 | struct lttng_ust_excluder_node { |
135 | struct cds_list_head node; | |
136 | struct lttng_enabler *enabler; | |
137 | /* | |
138 | * struct lttng_ust_event_exclusion had variable sized array, | |
139 | * must be last field. | |
140 | */ | |
fd17d7ce | 141 | struct lttng_ust_abi_event_exclusion excluder; |
92495593 FD |
142 | }; |
143 | ||
bb7ad29d MJ |
144 | /* Data structures used by the tracer. */ |
145 | ||
146 | struct tp_list_entry { | |
fd17d7ce | 147 | struct lttng_ust_abi_tracepoint_iter tp; |
bb7ad29d MJ |
148 | struct cds_list_head head; |
149 | }; | |
150 | ||
151 | struct lttng_ust_tracepoint_list { | |
152 | struct tp_list_entry *iter; | |
153 | struct cds_list_head head; | |
154 | }; | |
155 | ||
156 | struct tp_field_list_entry { | |
fd17d7ce | 157 | struct lttng_ust_abi_field_iter field; |
bb7ad29d MJ |
158 | struct cds_list_head head; |
159 | }; | |
160 | ||
161 | struct lttng_ust_field_list { | |
162 | struct tp_field_list_entry *iter; | |
163 | struct cds_list_head head; | |
164 | }; | |
165 | ||
166 | /* | |
167 | * Objects in a linked-list of enablers, owned by an event or event_notifier. | |
168 | * This is used because an event (or a event_notifier) can be enabled by more | |
169 | * than one enabler and we want a quick way to iterate over all enablers of an | |
170 | * object. | |
171 | * | |
172 | * For example, event rules "my_app:a*" and "my_app:ab*" will both match the | |
173 | * event with the name "my_app:abc". | |
174 | */ | |
175 | struct lttng_enabler_ref { | |
176 | struct cds_list_head node; /* enabler ref list */ | |
177 | struct lttng_enabler *ref; /* backward ref */ | |
178 | }; | |
179 | ||
180 | #define LTTNG_COUNTER_DIMENSION_MAX 8 | |
181 | struct lttng_counter_dimension { | |
182 | uint64_t size; | |
183 | uint64_t underflow_index; | |
184 | uint64_t overflow_index; | |
185 | uint8_t has_underflow; | |
186 | uint8_t has_overflow; | |
187 | }; | |
188 | ||
b5863ea7 MD |
189 | struct lttng_counter_ops { |
190 | struct lib_counter *(*counter_create)(size_t nr_dimensions, | |
191 | const struct lttng_counter_dimension *dimensions, | |
192 | int64_t global_sum_step, | |
193 | int global_counter_fd, | |
194 | int nr_counter_cpu_fds, | |
195 | const int *counter_cpu_fds, | |
196 | bool is_daemon); | |
197 | void (*counter_destroy)(struct lib_counter *counter); | |
198 | int (*counter_add)(struct lib_counter *counter, | |
199 | const size_t *dimension_indexes, int64_t v); | |
200 | int (*counter_read)(struct lib_counter *counter, | |
201 | const size_t *dimension_indexes, int cpu, | |
202 | int64_t *value, bool *overflow, bool *underflow); | |
203 | int (*counter_aggregate)(struct lib_counter *counter, | |
204 | const size_t *dimension_indexes, int64_t *value, | |
205 | bool *overflow, bool *underflow); | |
206 | int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); | |
207 | }; | |
208 | ||
bb7ad29d MJ |
209 | struct lttng_counter { |
210 | int objd; | |
211 | struct lttng_event_notifier_group *event_notifier_group; /* owner */ | |
212 | struct lttng_counter_transport *transport; | |
213 | struct lib_counter *counter; | |
214 | struct lttng_counter_ops *ops; | |
215 | }; | |
216 | ||
681f6001 MD |
217 | #define LTTNG_UST_EVENT_HT_BITS 12 |
218 | #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS) | |
219 | ||
220 | struct lttng_ust_event_ht { | |
221 | struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE]; | |
222 | }; | |
223 | ||
224 | #define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12 | |
225 | #define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS) | |
226 | struct lttng_ust_event_notifier_ht { | |
227 | struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE]; | |
228 | }; | |
229 | ||
230 | #define LTTNG_UST_ENUM_HT_BITS 12 | |
231 | #define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS) | |
232 | ||
233 | struct lttng_ust_enum_ht { | |
234 | struct cds_hlist_head table[LTTNG_UST_ENUM_HT_SIZE]; | |
235 | }; | |
236 | ||
bb7ad29d MJ |
237 | struct lttng_event_notifier_group { |
238 | int objd; | |
239 | void *owner; | |
240 | int notification_fd; | |
241 | struct cds_list_head node; /* Event notifier group handle list */ | |
242 | struct cds_list_head enablers_head; | |
0c1264b0 | 243 | struct cds_list_head event_notifiers_head; /* list of event_notifiers */ |
bb7ad29d | 244 | struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */ |
0c1264b0 | 245 | struct lttng_ust_ctx *ctx; /* contexts for filters. */ |
bb7ad29d MJ |
246 | |
247 | struct lttng_counter *error_counter; | |
248 | size_t error_counter_len; | |
249 | }; | |
250 | ||
251 | struct lttng_transport { | |
252 | char *name; | |
253 | struct cds_list_head node; | |
14b6f891 | 254 | struct lttng_ust_channel_buffer_ops ops; |
bb7ad29d MJ |
255 | const struct lttng_ust_lib_ring_buffer_config *client_config; |
256 | }; | |
257 | ||
258 | struct lttng_counter_transport { | |
259 | char *name; | |
260 | struct cds_list_head node; | |
261 | struct lttng_counter_ops ops; | |
262 | const struct lib_counter_config *client_config; | |
263 | }; | |
264 | ||
80333dfa | 265 | struct lttng_ust_event_common_private { |
7ee76145 | 266 | struct lttng_ust_event_common *pub; /* Public event interface */ |
68bb7559 | 267 | |
a084756d | 268 | struct lttng_ust_event_desc *desc; |
68bb7559 MD |
269 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ |
270 | struct cds_list_head enablers_ref_head; | |
0c1264b0 | 271 | int registered; /* has reg'd tracepoint probe */ |
115db533 | 272 | uint64_t user_token; |
a2e4d05e MD |
273 | |
274 | int has_enablers_without_filter_bytecode; | |
275 | /* list of struct lttng_ust_bytecode_runtime, sorted by seqnum */ | |
276 | struct cds_list_head filter_bytecode_runtime_head; | |
68bb7559 MD |
277 | }; |
278 | ||
2e70391c | 279 | struct lttng_ust_event_recorder_private { |
80333dfa MD |
280 | struct lttng_ust_event_common_private parent; |
281 | ||
2e70391c | 282 | struct lttng_ust_event_recorder *pub; /* Public event interface */ |
ba99fbe2 MD |
283 | struct cds_list_head node; /* Event recorder list */ |
284 | struct cds_hlist_node hlist; /* Hash table of event recorders */ | |
a40b5b8c | 285 | struct lttng_ust_ctx *ctx; |
80333dfa MD |
286 | }; |
287 | ||
115db533 MD |
288 | struct lttng_ust_event_notifier_private { |
289 | struct lttng_ust_event_common_private parent; | |
290 | ||
d7d45c0d | 291 | struct lttng_ust_event_notifier *pub; /* Public event notifier interface */ |
115db533 MD |
292 | struct lttng_event_notifier_group *group; /* weak ref */ |
293 | size_t num_captures; /* Needed to allocate the msgpack array. */ | |
294 | uint64_t error_counter_index; | |
ba99fbe2 MD |
295 | struct cds_list_head node; /* Event notifier list */ |
296 | struct cds_hlist_node hlist; /* Hash table of event notifiers */ | |
a2e4d05e | 297 | struct cds_list_head capture_bytecode_runtime_head; |
a2e4d05e | 298 | }; |
362a65de | 299 | |
a2e4d05e | 300 | struct lttng_ust_bytecode_runtime { |
22c30e27 | 301 | enum lttng_ust_bytecode_type type; |
362a65de MD |
302 | struct lttng_ust_bytecode_node *bc; |
303 | int link_failed; | |
a2e4d05e MD |
304 | int (*interpreter_func)(struct lttng_ust_bytecode_runtime *bytecode_runtime, |
305 | const char *interpreter_stack_data, | |
306 | void *ctx); | |
0c1264b0 | 307 | struct cds_list_head node; /* list of bytecode runtime in event */ |
362a65de MD |
308 | /* |
309 | * Pointer to a URCU-protected pointer owned by an `struct | |
310 | * lttng_session`or `struct lttng_event_notifier_group`. | |
311 | */ | |
daacdbfc | 312 | struct lttng_ust_ctx **pctx; |
362a65de MD |
313 | }; |
314 | ||
bdb12629 | 315 | struct lttng_ust_session_private { |
f69fe5fb | 316 | struct lttng_ust_session *pub; /* Public session interface */ |
bdb12629 MD |
317 | |
318 | int been_active; /* Been active ? */ | |
319 | int objd; /* Object associated */ | |
320 | struct cds_list_head chan_head; /* Channel list head */ | |
321 | struct cds_list_head events_head; /* list of events */ | |
322 | struct cds_list_head node; /* Session list */ | |
323 | ||
bdb12629 MD |
324 | /* List of enablers */ |
325 | struct cds_list_head enablers_head; | |
326 | struct lttng_ust_event_ht events_ht; /* ht of events */ | |
327 | void *owner; /* object owner */ | |
328 | int tstate:1; /* Transient enable state */ | |
329 | ||
bdb12629 MD |
330 | int statedump_pending:1; |
331 | ||
bdb12629 MD |
332 | struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */ |
333 | struct cds_list_head enums_head; | |
0c1264b0 | 334 | struct lttng_ust_ctx *ctx; /* contexts for filters. */ |
9daacd1a MD |
335 | |
336 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ | |
337 | bool uuid_set; /* Is uuid set ? */ | |
bdb12629 MD |
338 | }; |
339 | ||
036d17fb | 340 | struct lttng_enum { |
a084756d | 341 | struct lttng_ust_enum_desc *desc; |
f69fe5fb | 342 | struct lttng_ust_session *session; |
0c1264b0 MD |
343 | struct cds_list_head node; /* Enum list in session */ |
344 | struct cds_hlist_node hlist; /* Session ht of enums */ | |
345 | uint64_t id; /* Enumeration ID in sessiond */ | |
036d17fb MD |
346 | }; |
347 | ||
e7bc0ef6 MD |
348 | struct lttng_ust_shm_handle; |
349 | ||
14b6f891 MD |
350 | struct lttng_ust_channel_buffer_ops_private { |
351 | struct lttng_ust_channel_buffer_ops *pub; /* Public channel buffer ops interface */ | |
a880bae5 | 352 | |
e7bc0ef6 | 353 | struct lttng_ust_channel_buffer *(*channel_create)(const char *name, |
a880bae5 MD |
354 | void *buf_addr, |
355 | size_t subbuf_size, size_t num_subbuf, | |
356 | unsigned int switch_timer_interval, | |
357 | unsigned int read_timer_interval, | |
358 | unsigned char *uuid, | |
359 | uint32_t chan_id, | |
360 | const int *stream_fds, int nr_stream_fds, | |
361 | int64_t blocking_timeout); | |
e7bc0ef6 | 362 | void (*channel_destroy)(struct lttng_ust_channel_buffer *chan); |
a880bae5 MD |
363 | /* |
364 | * packet_avail_size returns the available size in the current | |
365 | * packet. Note that the size returned is only a hint, since it | |
366 | * may change due to concurrent writes. | |
367 | */ | |
07539b34 MD |
368 | size_t (*packet_avail_size)(struct lttng_ust_channel_buffer *chan); |
369 | int (*is_finalized)(struct lttng_ust_channel_buffer *chan); | |
370 | int (*is_disabled)(struct lttng_ust_channel_buffer *chan); | |
371 | int (*flush_buffer)(struct lttng_ust_channel_buffer *chan); | |
a880bae5 MD |
372 | }; |
373 | ||
e7bc0ef6 MD |
374 | struct lttng_ust_channel_common_private { |
375 | struct lttng_ust_channel_common *pub; /* Public channel interface */ | |
376 | ||
0c1264b0 MD |
377 | int objd; /* Object associated with channel. */ |
378 | int tstate:1; /* Transient enable state */ | |
e7bc0ef6 MD |
379 | }; |
380 | ||
381 | struct lttng_ust_channel_buffer_private { | |
382 | struct lttng_ust_channel_common_private parent; | |
383 | ||
384 | struct lttng_ust_channel_buffer *pub; /* Public channel buffer interface */ | |
0c1264b0 MD |
385 | struct cds_list_head node; /* Channel list in session */ |
386 | int header_type; /* 0: unset, 1: compact, 2: large */ | |
387 | unsigned int id; /* Channel ID */ | |
e7bc0ef6 | 388 | enum lttng_ust_abi_chan_type type; |
0950190a | 389 | struct lttng_ust_ctx *ctx; |
07539b34 | 390 | struct lttng_ust_lib_ring_buffer_channel *rb_chan; /* Ring buffer channel */ |
e7bc0ef6 MD |
391 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ |
392 | }; | |
393 | ||
f0fde1c3 MD |
394 | /* |
395 | * IMPORTANT: this structure is part of the ABI between the consumer | |
396 | * daemon and the UST library within traced applications. Changing it | |
397 | * breaks the UST communication protocol. | |
398 | * | |
399 | * TODO: remove unused fields on next UST communication protocol | |
400 | * breaking update. | |
401 | */ | |
402 | struct lttng_ust_abi_channel_config { | |
403 | void *unused1; | |
404 | int unused2; | |
405 | void *unused3; | |
406 | void *unused4; | |
407 | int unused5; | |
408 | struct cds_list_head unused6; | |
409 | void *unused7; | |
410 | int unused8; | |
411 | void *unused9; | |
412 | ||
413 | /* Channel ID */ | |
414 | unsigned int id; | |
415 | enum lttng_ust_abi_chan_type unused10; | |
416 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ | |
417 | int unused11:1; | |
418 | }; | |
419 | ||
a084756d MD |
420 | static inline |
421 | struct lttng_ust_type_integer *lttng_ust_get_type_integer(struct lttng_ust_type_common *type) | |
422 | { | |
423 | if (type->type != lttng_ust_type_integer) | |
424 | return NULL; | |
425 | return caa_container_of(type, struct lttng_ust_type_integer, parent); | |
426 | } | |
427 | ||
428 | static inline | |
429 | struct lttng_ust_type_float *lttng_ust_get_type_float(struct lttng_ust_type_common *type) | |
430 | { | |
431 | if (type->type != lttng_ust_type_float) | |
432 | return NULL; | |
433 | return caa_container_of(type, struct lttng_ust_type_float, parent); | |
434 | } | |
435 | ||
436 | static inline | |
437 | struct lttng_ust_type_string *lttng_ust_get_type_string(struct lttng_ust_type_common *type) | |
438 | { | |
439 | if (type->type != lttng_ust_type_string) | |
440 | return NULL; | |
441 | return caa_container_of(type, struct lttng_ust_type_string, parent); | |
442 | } | |
443 | ||
444 | static inline | |
445 | struct lttng_ust_type_enum *lttng_ust_get_type_enum(struct lttng_ust_type_common *type) | |
446 | { | |
447 | if (type->type != lttng_ust_type_enum) | |
448 | return NULL; | |
449 | return caa_container_of(type, struct lttng_ust_type_enum, parent); | |
450 | } | |
451 | ||
452 | static inline | |
453 | struct lttng_ust_type_array *lttng_ust_get_type_array(struct lttng_ust_type_common *type) | |
454 | { | |
455 | if (type->type != lttng_ust_type_array) | |
456 | return NULL; | |
457 | return caa_container_of(type, struct lttng_ust_type_array, parent); | |
458 | } | |
459 | ||
460 | static inline | |
461 | struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(struct lttng_ust_type_common *type) | |
462 | { | |
463 | if (type->type != lttng_ust_type_sequence) | |
464 | return NULL; | |
465 | return caa_container_of(type, struct lttng_ust_type_sequence, parent); | |
466 | } | |
467 | ||
468 | static inline | |
469 | struct lttng_ust_type_struct *lttng_ust_get_type_struct(struct lttng_ust_type_common *type) | |
470 | { | |
471 | if (type->type != lttng_ust_type_struct) | |
472 | return NULL; | |
473 | return caa_container_of(type, struct lttng_ust_type_struct, parent); | |
474 | } | |
475 | ||
476 | /* Create dynamically allocated types. */ | |
477 | static inline | |
478 | struct lttng_ust_type_common *lttng_ust_create_type_integer(unsigned int size, | |
479 | unsigned short alignment, bool signedness, unsigned int byte_order, | |
480 | unsigned int base) | |
481 | { | |
482 | struct lttng_ust_type_integer *integer_type; | |
483 | ||
484 | integer_type = zmalloc(sizeof(struct lttng_ust_type_integer)); | |
485 | if (!integer_type) | |
486 | return NULL; | |
487 | integer_type->parent.type = lttng_ust_type_integer; | |
488 | integer_type->struct_size = sizeof(struct lttng_ust_type_integer); | |
489 | integer_type->size = size; | |
490 | integer_type->alignment = alignment; | |
491 | integer_type->signedness = signedness; | |
492 | integer_type->reverse_byte_order = byte_order != BYTE_ORDER; | |
493 | integer_type->base = base; | |
494 | return (struct lttng_ust_type_common *) integer_type; | |
495 | } | |
496 | ||
497 | static inline | |
498 | struct lttng_ust_type_common *lttng_ust_create_type_array_text(unsigned int length) | |
499 | { | |
500 | struct lttng_ust_type_array *array_type; | |
501 | ||
502 | array_type = zmalloc(sizeof(struct lttng_ust_type_array)); | |
503 | if (!array_type) | |
504 | return NULL; | |
505 | array_type->parent.type = lttng_ust_type_array; | |
506 | array_type->struct_size = sizeof(struct lttng_ust_type_array); | |
507 | array_type->length = length; | |
508 | array_type->alignment = 0; | |
509 | array_type->encoding = lttng_ust_string_encoding_UTF8; | |
510 | array_type->elem_type = lttng_ust_create_type_integer(sizeof(char) * CHAR_BIT, | |
eae3c729 | 511 | lttng_alignof(char) * CHAR_BIT, lttng_ust_is_signed_type(char), |
a084756d MD |
512 | BYTE_ORDER, 10); |
513 | if (!array_type->elem_type) | |
514 | goto error_elem; | |
515 | return (struct lttng_ust_type_common *) array_type; | |
516 | ||
517 | error_elem: | |
518 | free(array_type); | |
519 | return NULL; | |
520 | } | |
521 | ||
522 | /* | |
523 | * Destroy dynamically allocated types, including nested types. | |
524 | * For enumerations, it does not free the enumeration mapping description. | |
525 | */ | |
526 | static inline | |
527 | void lttng_ust_destroy_type(struct lttng_ust_type_common *type) | |
528 | { | |
529 | if (!type) | |
530 | return; | |
531 | ||
532 | switch (type->type) { | |
533 | case lttng_ust_type_integer: | |
534 | case lttng_ust_type_string: | |
535 | case lttng_ust_type_float: | |
536 | case lttng_ust_type_dynamic: | |
537 | free(type); | |
538 | break; | |
539 | case lttng_ust_type_enum: | |
540 | { | |
541 | struct lttng_ust_type_enum *enum_type = (struct lttng_ust_type_enum *) type; | |
542 | ||
543 | lttng_ust_destroy_type(enum_type->container_type); | |
a9d86fd1 | 544 | free(enum_type); |
a084756d MD |
545 | break; |
546 | } | |
547 | case lttng_ust_type_array: | |
548 | { | |
549 | struct lttng_ust_type_array *array_type = (struct lttng_ust_type_array *) type; | |
550 | ||
551 | lttng_ust_destroy_type(array_type->elem_type); | |
a9d86fd1 | 552 | free(array_type); |
a084756d MD |
553 | break; |
554 | } | |
555 | case lttng_ust_type_sequence: | |
556 | { | |
557 | struct lttng_ust_type_sequence *sequence_type = (struct lttng_ust_type_sequence *) type; | |
558 | ||
559 | lttng_ust_destroy_type(sequence_type->elem_type); | |
a9d86fd1 | 560 | free(sequence_type); |
a084756d MD |
561 | break; |
562 | } | |
563 | case lttng_ust_type_struct: | |
564 | { | |
565 | struct lttng_ust_type_struct *struct_type = (struct lttng_ust_type_struct *) type; | |
566 | unsigned int i; | |
567 | ||
568 | for (i = 0; i < struct_type->nr_fields; i++) | |
569 | lttng_ust_destroy_type(struct_type->fields[i]->type); | |
a9d86fd1 | 570 | free(struct_type); |
a084756d MD |
571 | break; |
572 | } | |
573 | default: | |
574 | abort(); | |
575 | } | |
576 | } | |
577 | ||
d871c65b FD |
578 | static inline |
579 | struct lttng_enabler *lttng_event_enabler_as_enabler( | |
580 | struct lttng_event_enabler *event_enabler) | |
581 | { | |
582 | return &event_enabler->base; | |
583 | } | |
584 | ||
d8d2416d FD |
585 | static inline |
586 | struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( | |
587 | struct lttng_event_notifier_enabler *event_notifier_enabler) | |
588 | { | |
589 | return &event_notifier_enabler->base; | |
590 | } | |
d871c65b FD |
591 | |
592 | /* | |
593 | * Allocate and initialize a `struct lttng_event_enabler` object. | |
594 | * | |
595 | * On success, returns a `struct lttng_event_enabler`, | |
596 | * On memory error, returns NULL. | |
597 | */ | |
ddabe860 | 598 | __attribute__((visibility("hidden"))) |
d871c65b FD |
599 | struct lttng_event_enabler *lttng_event_enabler_create( |
600 | enum lttng_enabler_format_type format_type, | |
fd17d7ce | 601 | struct lttng_ust_abi_event *event_param, |
e7bc0ef6 | 602 | struct lttng_ust_channel_buffer *chan); |
d871c65b FD |
603 | |
604 | /* | |
605 | * Destroy a `struct lttng_event_enabler` object. | |
606 | */ | |
ddabe860 | 607 | __attribute__((visibility("hidden"))) |
d871c65b FD |
608 | void lttng_event_enabler_destroy(struct lttng_event_enabler *enabler); |
609 | ||
610 | /* | |
611 | * Enable a `struct lttng_event_enabler` object and all events related to this | |
612 | * enabler. | |
613 | */ | |
ddabe860 | 614 | __attribute__((visibility("hidden"))) |
d871c65b FD |
615 | int lttng_event_enabler_enable(struct lttng_event_enabler *enabler); |
616 | ||
617 | /* | |
618 | * Disable a `struct lttng_event_enabler` object and all events related to this | |
619 | * enabler. | |
620 | */ | |
ddabe860 | 621 | __attribute__((visibility("hidden"))) |
d871c65b FD |
622 | int lttng_event_enabler_disable(struct lttng_event_enabler *enabler); |
623 | ||
624 | /* | |
625 | * Attach filter bytecode program to `struct lttng_event_enabler` and all | |
626 | * events related to this enabler. | |
627 | */ | |
ddabe860 | 628 | __attribute__((visibility("hidden"))) |
a56fd376 FD |
629 | int lttng_event_enabler_attach_filter_bytecode( |
630 | struct lttng_event_enabler *enabler, | |
ab89263e | 631 | struct lttng_ust_bytecode_node **bytecode); |
d871c65b FD |
632 | |
633 | /* | |
634 | * Attach an application context to an event enabler. | |
635 | * | |
636 | * Not implemented. | |
637 | */ | |
ddabe860 | 638 | __attribute__((visibility("hidden"))) |
d871c65b | 639 | int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler, |
fd17d7ce | 640 | struct lttng_ust_abi_context *ctx); |
d871c65b FD |
641 | |
642 | /* | |
643 | * Attach exclusion list to `struct lttng_event_enabler` and all | |
644 | * events related to this enabler. | |
645 | */ | |
ddabe860 | 646 | __attribute__((visibility("hidden"))) |
d871c65b | 647 | int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler, |
e9fe6aad | 648 | struct lttng_ust_excluder_node **excluder); |
d871c65b FD |
649 | |
650 | /* | |
d37ecb3f FD |
651 | * Synchronize bytecodes for the enabler and the instance (event or |
652 | * event_notifier). | |
d871c65b | 653 | * |
621c07fc | 654 | * This function goes over all bytecode programs of the enabler (event or |
d37ecb3f | 655 | * event_notifier enabler) to ensure each is linked to the provided instance. |
d871c65b | 656 | */ |
ddabe860 | 657 | __attribute__((visibility("hidden"))) |
a084756d | 658 | void lttng_enabler_link_bytecode(struct lttng_ust_event_desc *event_desc, |
daacdbfc | 659 | struct lttng_ust_ctx **ctx, |
621c07fc FD |
660 | struct cds_list_head *instance_bytecode_runtime_head, |
661 | struct cds_list_head *enabler_bytecode_runtime_head); | |
d871c65b | 662 | |
d8d2416d FD |
663 | /* |
664 | * Allocate and initialize a `struct lttng_event_notifier_group` object. | |
665 | * | |
666 | * On success, returns a `struct lttng_triggre_group`, | |
667 | * on memory error, returns NULL. | |
668 | */ | |
ddabe860 | 669 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
670 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); |
671 | ||
672 | /* | |
673 | * Destroy a `struct lttng_event_notifier_group` object. | |
674 | */ | |
ddabe860 | 675 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
676 | void lttng_event_notifier_group_destroy( |
677 | struct lttng_event_notifier_group *event_notifier_group); | |
678 | ||
679 | /* | |
680 | * Allocate and initialize a `struct lttng_event_notifier_enabler` object. | |
681 | * | |
682 | * On success, returns a `struct lttng_event_notifier_enabler`, | |
683 | * On memory error, returns NULL. | |
684 | */ | |
ddabe860 | 685 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
686 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( |
687 | struct lttng_event_notifier_group *event_notifier_group, | |
688 | enum lttng_enabler_format_type format_type, | |
fd17d7ce | 689 | struct lttng_ust_abi_event_notifier *event_notifier_param); |
d8d2416d FD |
690 | |
691 | /* | |
692 | * Destroy a `struct lttng_event_notifier_enabler` object. | |
693 | */ | |
ddabe860 | 694 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
695 | void lttng_event_notifier_enabler_destroy( |
696 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
697 | ||
698 | /* | |
699 | * Enable a `struct lttng_event_notifier_enabler` object and all event | |
700 | * notifiers related to this enabler. | |
701 | */ | |
ddabe860 | 702 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
703 | int lttng_event_notifier_enabler_enable( |
704 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
705 | ||
706 | /* | |
707 | * Disable a `struct lttng_event_notifier_enabler` object and all event | |
708 | * notifiers related to this enabler. | |
709 | */ | |
ddabe860 | 710 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
711 | int lttng_event_notifier_enabler_disable( |
712 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
713 | ||
714 | /* | |
715 | * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and | |
716 | * all event notifiers related to this enabler. | |
717 | */ | |
ddabe860 | 718 | __attribute__((visibility("hidden"))) |
a56fd376 | 719 | int lttng_event_notifier_enabler_attach_filter_bytecode( |
d8d2416d | 720 | struct lttng_event_notifier_enabler *event_notifier_enabler, |
ab89263e | 721 | struct lttng_ust_bytecode_node **bytecode); |
d8d2416d | 722 | |
d37ecb3f FD |
723 | /* |
724 | * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and | |
725 | * all event_notifiers related to this enabler. | |
726 | */ | |
ddabe860 | 727 | __attribute__((visibility("hidden"))) |
d37ecb3f FD |
728 | int lttng_event_notifier_enabler_attach_capture_bytecode( |
729 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
49cde654 | 730 | struct lttng_ust_bytecode_node **bytecode); |
d37ecb3f | 731 | |
d8d2416d FD |
732 | /* |
733 | * Attach exclusion list to `struct lttng_event_notifier_enabler` and all | |
734 | * event notifiers related to this enabler. | |
735 | */ | |
ddabe860 | 736 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
737 | int lttng_event_notifier_enabler_attach_exclusion( |
738 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
e9fe6aad | 739 | struct lttng_ust_excluder_node **excluder); |
d8d2416d | 740 | |
ddabe860 | 741 | __attribute__((visibility("hidden"))) |
b1f720f0 | 742 | void lttng_free_event_filter_runtime(struct lttng_ust_event_common *event); |
d8d2416d FD |
743 | |
744 | /* | |
745 | * Connect the probe on all enablers matching this event description. | |
746 | * Called on library load. | |
747 | */ | |
ddabe860 | 748 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
749 | int lttng_fix_pending_event_notifiers(void); |
750 | ||
ddabe860 | 751 | __attribute__((visibility("hidden"))) |
67d4e8f5 MJ |
752 | struct lttng_counter *lttng_ust_counter_create( |
753 | const char *counter_transport_name, | |
754 | size_t number_dimensions, const struct lttng_counter_dimension *dimensions); | |
755 | ||
eeef0055 | 756 | #ifdef HAVE_LINUX_PERF_EVENT_H |
bd8c1787 | 757 | |
ddabe860 | 758 | __attribute__((visibility("hidden"))) |
bd8c1787 MJ |
759 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
760 | uint64_t config, | |
761 | const char *name, | |
daacdbfc | 762 | struct lttng_ust_ctx **ctx); |
ddabe860 MJ |
763 | |
764 | __attribute__((visibility("hidden"))) | |
bd8c1787 | 765 | int lttng_perf_counter_init(void); |
ddabe860 MJ |
766 | |
767 | __attribute__((visibility("hidden"))) | |
bd8c1787 MJ |
768 | void lttng_perf_counter_exit(void); |
769 | ||
eeef0055 | 770 | #else /* #ifdef HAVE_LINUX_PERF_EVENT_H */ |
bd8c1787 MJ |
771 | |
772 | static inline | |
773 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
774 | uint64_t config, | |
775 | const char *name, | |
daacdbfc | 776 | struct lttng_ust_ctx **ctx) |
bd8c1787 MJ |
777 | { |
778 | return -ENOSYS; | |
779 | } | |
780 | static inline | |
781 | int lttng_perf_counter_init(void) | |
782 | { | |
783 | return 0; | |
784 | } | |
785 | static inline | |
786 | void lttng_perf_counter_exit(void) | |
787 | { | |
788 | } | |
eeef0055 | 789 | #endif /* #else #ifdef HAVE_LINUX_PERF_EVENT_H */ |
bd8c1787 | 790 | |
ddabe860 | 791 | __attribute__((visibility("hidden"))) |
7753d283 | 792 | int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list); |
ddabe860 MJ |
793 | |
794 | __attribute__((visibility("hidden"))) | |
7753d283 MJ |
795 | void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list); |
796 | ||
ddabe860 | 797 | __attribute__((visibility("hidden"))) |
7753d283 | 798 | int lttng_probes_get_field_list(struct lttng_ust_field_list *list); |
ddabe860 MJ |
799 | |
800 | __attribute__((visibility("hidden"))) | |
7753d283 MJ |
801 | void lttng_probes_prune_field_list(struct lttng_ust_field_list *list); |
802 | ||
ddabe860 | 803 | __attribute__((visibility("hidden"))) |
fd17d7ce | 804 | struct lttng_ust_abi_tracepoint_iter * |
7753d283 | 805 | lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list); |
ddabe860 MJ |
806 | |
807 | __attribute__((visibility("hidden"))) | |
fd17d7ce | 808 | struct lttng_ust_abi_field_iter * |
7753d283 MJ |
809 | lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list); |
810 | ||
ddabe860 | 811 | __attribute__((visibility("hidden"))) |
f69fe5fb | 812 | struct lttng_ust_session *lttng_session_create(void); |
ddabe860 MJ |
813 | |
814 | __attribute__((visibility("hidden"))) | |
f69fe5fb | 815 | int lttng_session_enable(struct lttng_ust_session *session); |
ddabe860 MJ |
816 | |
817 | __attribute__((visibility("hidden"))) | |
f69fe5fb | 818 | int lttng_session_disable(struct lttng_ust_session *session); |
ddabe860 MJ |
819 | |
820 | __attribute__((visibility("hidden"))) | |
f69fe5fb | 821 | int lttng_session_statedump(struct lttng_ust_session *session); |
ddabe860 MJ |
822 | |
823 | __attribute__((visibility("hidden"))) | |
f69fe5fb | 824 | void lttng_session_destroy(struct lttng_ust_session *session); |
7753d283 | 825 | |
a5ae46cc MJ |
826 | /* |
827 | * Called with ust lock held. | |
828 | */ | |
829 | __attribute__((visibility("hidden"))) | |
830 | int lttng_session_active(void); | |
831 | ||
ddabe860 | 832 | __attribute__((visibility("hidden"))) |
7753d283 MJ |
833 | struct cds_list_head *lttng_get_sessions(void); |
834 | ||
ddabe860 | 835 | __attribute__((visibility("hidden"))) |
7753d283 MJ |
836 | void lttng_handle_pending_statedump(void *owner); |
837 | ||
ddabe860 | 838 | __attribute__((visibility("hidden"))) |
e7bc0ef6 | 839 | int lttng_channel_enable(struct lttng_ust_channel_common *lttng_channel); |
7753d283 | 840 | |
ddabe860 | 841 | __attribute__((visibility("hidden"))) |
e7bc0ef6 | 842 | int lttng_channel_disable(struct lttng_ust_channel_common *lttng_channel); |
7753d283 | 843 | |
ddabe860 | 844 | __attribute__((visibility("hidden"))) |
7753d283 | 845 | void lttng_transport_register(struct lttng_transport *transport); |
ddabe860 MJ |
846 | |
847 | __attribute__((visibility("hidden"))) | |
7753d283 MJ |
848 | void lttng_transport_unregister(struct lttng_transport *transport); |
849 | ||
65c48d6a MJ |
850 | /* This is ABI between liblttng-ust and liblttng-ust-ctl */ |
851 | struct lttng_transport *lttng_ust_transport_find(const char *name); | |
852 | ||
cbba5e04 MJ |
853 | /* This is ABI between liblttng-ust and liblttng-ust-dl */ |
854 | void lttng_ust_dl_update(void *ip); | |
855 | ||
ddabe860 | 856 | __attribute__((visibility("hidden"))) |
dc11f93f | 857 | void lttng_probe_provider_unregister_events(struct lttng_ust_probe_desc *desc); |
7753d283 | 858 | |
ddabe860 | 859 | __attribute__((visibility("hidden"))) |
7753d283 MJ |
860 | int lttng_fix_pending_events(void); |
861 | ||
ddabe860 | 862 | __attribute__((visibility("hidden"))) |
7753d283 MJ |
863 | struct cds_list_head *lttng_get_probe_list_head(void); |
864 | ||
ddabe860 | 865 | __attribute__((visibility("hidden"))) |
f69fe5fb | 866 | struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session, |
a084756d | 867 | struct lttng_ust_enum_desc *enum_desc); |
7753d283 | 868 | |
ddabe860 | 869 | __attribute__((visibility("hidden"))) |
fd17d7ce MD |
870 | int lttng_abi_create_root_handle(void); |
871 | ||
ddabe860 | 872 | __attribute__((visibility("hidden"))) |
fd17d7ce | 873 | const struct lttng_ust_abi_objd_ops *lttng_ust_abi_objd_ops(int id); |
ddabe860 MJ |
874 | |
875 | __attribute__((visibility("hidden"))) | |
fd17d7ce | 876 | int lttng_ust_abi_objd_unref(int id, int is_owner); |
ddabe860 MJ |
877 | |
878 | __attribute__((visibility("hidden"))) | |
fd17d7ce | 879 | void lttng_ust_abi_exit(void); |
ddabe860 MJ |
880 | |
881 | __attribute__((visibility("hidden"))) | |
fd17d7ce | 882 | void lttng_ust_abi_events_exit(void); |
ddabe860 MJ |
883 | |
884 | __attribute__((visibility("hidden"))) | |
fd17d7ce MD |
885 | void lttng_ust_abi_objd_table_owner_cleanup(void *owner); |
886 | ||
e7bc0ef6 MD |
887 | __attribute__((visibility("hidden"))) |
888 | struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void); | |
889 | ||
890 | __attribute__((visibility("hidden"))) | |
891 | void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan); | |
892 | ||
a2e4d05e MD |
893 | __attribute__((visibility("hidden"))) |
894 | int lttng_ust_interpret_event_filter(struct lttng_ust_event_common *event, | |
895 | const char *interpreter_stack_data, | |
896 | void *filter_ctx); | |
897 | ||
9daacd1a MD |
898 | __attribute__((visibility("hidden"))) |
899 | int lttng_ust_session_uuid_validate(struct lttng_ust_session *session, | |
900 | unsigned char *uuid); | |
901 | ||
5b4c6da4 MD |
902 | __attribute__((visibility("hidden"))) |
903 | bool lttng_ust_validate_event_name(const struct lttng_ust_event_desc *desc); | |
904 | ||
905 | __attribute__((visibility("hidden"))) | |
906 | void lttng_ust_format_event_name(const struct lttng_ust_event_desc *desc, | |
907 | char *name); | |
908 | ||
d871c65b | 909 | #endif /* _LTTNG_UST_EVENTS_INTERNAL_H */ |