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 | ||
9af5d97a | 10 | #include <limits.h> |
d871c65b FD |
11 | #include <stdint.h> |
12 | ||
13 | #include <urcu/list.h> | |
14 | #include <urcu/hlist.h> | |
15 | ||
d871c65b FD |
16 | #include <lttng/ust-events.h> |
17 | ||
a084756d | 18 | #include <ust-helper.h> |
fa194c41 | 19 | #include "ust-context-provider.h" |
fd17d7ce MD |
20 | |
21 | struct lttng_ust_abi_obj; | |
06cd86a0 | 22 | struct lttng_event_notifier_group; |
fd17d7ce MD |
23 | |
24 | union lttng_ust_abi_args { | |
25 | struct { | |
26 | void *chan_data; | |
27 | int wakeup_fd; | |
28 | } channel; | |
29 | struct { | |
30 | int shm_fd; | |
31 | int wakeup_fd; | |
32 | } stream; | |
33 | struct { | |
34 | struct lttng_ust_abi_field_iter entry; | |
35 | } field_list; | |
36 | struct { | |
37 | char *ctxname; | |
38 | } app_context; | |
39 | struct { | |
40 | int event_notifier_notif_fd; | |
41 | } event_notifier_handle; | |
42 | struct { | |
43 | void *counter_data; | |
44 | } counter; | |
45 | struct { | |
46 | int shm_fd; | |
47 | } counter_shm; | |
48 | }; | |
49 | ||
50 | struct lttng_ust_abi_objd_ops { | |
51 | long (*cmd)(int objd, unsigned int cmd, unsigned long arg, | |
52 | union lttng_ust_abi_args *args, void *owner); | |
53 | int (*release)(int objd); | |
54 | }; | |
55 | ||
8665f6a4 MJ |
56 | enum lttng_enabler_format_type { |
57 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
58 | LTTNG_ENABLER_FORMAT_EVENT, | |
59 | }; | |
60 | ||
61 | /* | |
62 | * Enabler field, within whatever object is enabling an event. Target of | |
63 | * backward reference. | |
64 | */ | |
65 | struct lttng_enabler { | |
66 | enum lttng_enabler_format_type format_type; | |
67 | ||
68 | /* head list of struct lttng_ust_filter_bytecode_node */ | |
69 | struct cds_list_head filter_bytecode_head; | |
70 | /* head list of struct lttng_ust_excluder_node */ | |
71 | struct cds_list_head excluder_head; | |
72 | ||
fd17d7ce | 73 | struct lttng_ust_abi_event event_param; |
8665f6a4 MJ |
74 | unsigned int enabled:1; |
75 | }; | |
76 | ||
d871c65b FD |
77 | struct lttng_event_enabler { |
78 | struct lttng_enabler base; | |
79 | struct cds_list_head node; /* per-session list of enablers */ | |
e7bc0ef6 | 80 | struct lttng_ust_channel_buffer *chan; |
d871c65b FD |
81 | /* |
82 | * Unused, but kept around to make it explicit that the tracer can do | |
83 | * it. | |
84 | */ | |
daacdbfc | 85 | struct lttng_ust_ctx *ctx; |
d871c65b FD |
86 | }; |
87 | ||
d8d2416d FD |
88 | struct lttng_event_notifier_enabler { |
89 | struct lttng_enabler base; | |
6566528b | 90 | uint64_t error_counter_index; |
d37ecb3f FD |
91 | struct cds_list_head node; /* per-app list of event_notifier enablers */ |
92 | struct cds_list_head capture_bytecode_head; | |
d8d2416d FD |
93 | struct lttng_event_notifier_group *group; /* weak ref */ |
94 | uint64_t user_token; /* User-provided token */ | |
d37ecb3f | 95 | uint64_t num_captures; |
d8d2416d FD |
96 | }; |
97 | ||
22c30e27 MD |
98 | enum lttng_ust_bytecode_type { |
99 | LTTNG_UST_BYTECODE_TYPE_FILTER, | |
100 | LTTNG_UST_BYTECODE_TYPE_CAPTURE, | |
ab249ecf FD |
101 | }; |
102 | ||
103 | struct lttng_ust_bytecode_node { | |
22c30e27 | 104 | enum lttng_ust_bytecode_type type; |
92495593 FD |
105 | struct cds_list_head node; |
106 | struct lttng_enabler *enabler; | |
ab249ecf FD |
107 | struct { |
108 | uint32_t len; | |
109 | uint32_t reloc_offset; | |
110 | uint64_t seqnum; | |
111 | char data[]; | |
112 | } bc; | |
92495593 FD |
113 | }; |
114 | ||
a2e4d05e MD |
115 | /* |
116 | * Bytecode interpreter return value. | |
117 | */ | |
118 | enum lttng_ust_bytecode_interpreter_ret { | |
119 | LTTNG_UST_BYTECODE_INTERPRETER_ERROR = -1, | |
120 | LTTNG_UST_BYTECODE_INTERPRETER_OK = 0, | |
121 | }; | |
122 | ||
123 | struct lttng_interpreter_output; | |
124 | struct lttng_ust_bytecode_runtime_private; | |
125 | ||
126 | enum lttng_ust_bytecode_filter_result { | |
127 | LTTNG_UST_BYTECODE_FILTER_ACCEPT = 0, | |
128 | LTTNG_UST_BYTECODE_FILTER_REJECT = 1, | |
129 | }; | |
130 | ||
131 | struct lttng_ust_bytecode_filter_ctx { | |
132 | enum lttng_ust_bytecode_filter_result result; | |
133 | }; | |
134 | ||
92495593 FD |
135 | struct lttng_ust_excluder_node { |
136 | struct cds_list_head node; | |
137 | struct lttng_enabler *enabler; | |
138 | /* | |
139 | * struct lttng_ust_event_exclusion had variable sized array, | |
140 | * must be last field. | |
141 | */ | |
fd17d7ce | 142 | struct lttng_ust_abi_event_exclusion excluder; |
92495593 FD |
143 | }; |
144 | ||
bb7ad29d MJ |
145 | /* Data structures used by the tracer. */ |
146 | ||
147 | struct tp_list_entry { | |
fd17d7ce | 148 | struct lttng_ust_abi_tracepoint_iter tp; |
bb7ad29d MJ |
149 | struct cds_list_head head; |
150 | }; | |
151 | ||
152 | struct lttng_ust_tracepoint_list { | |
153 | struct tp_list_entry *iter; | |
154 | struct cds_list_head head; | |
155 | }; | |
156 | ||
157 | struct tp_field_list_entry { | |
fd17d7ce | 158 | struct lttng_ust_abi_field_iter field; |
bb7ad29d MJ |
159 | struct cds_list_head head; |
160 | }; | |
161 | ||
162 | struct lttng_ust_field_list { | |
163 | struct tp_field_list_entry *iter; | |
164 | struct cds_list_head head; | |
165 | }; | |
166 | ||
167 | /* | |
168 | * Objects in a linked-list of enablers, owned by an event or event_notifier. | |
169 | * This is used because an event (or a event_notifier) can be enabled by more | |
170 | * than one enabler and we want a quick way to iterate over all enablers of an | |
171 | * object. | |
172 | * | |
173 | * For example, event rules "my_app:a*" and "my_app:ab*" will both match the | |
174 | * event with the name "my_app:abc". | |
175 | */ | |
176 | struct lttng_enabler_ref { | |
177 | struct cds_list_head node; /* enabler ref list */ | |
178 | struct lttng_enabler *ref; /* backward ref */ | |
179 | }; | |
180 | ||
181 | #define LTTNG_COUNTER_DIMENSION_MAX 8 | |
182 | struct lttng_counter_dimension { | |
183 | uint64_t size; | |
184 | uint64_t underflow_index; | |
185 | uint64_t overflow_index; | |
186 | uint8_t has_underflow; | |
187 | uint8_t has_overflow; | |
188 | }; | |
189 | ||
b5863ea7 MD |
190 | struct lttng_counter_ops { |
191 | struct lib_counter *(*counter_create)(size_t nr_dimensions, | |
192 | const struct lttng_counter_dimension *dimensions, | |
193 | int64_t global_sum_step, | |
194 | int global_counter_fd, | |
195 | int nr_counter_cpu_fds, | |
196 | const int *counter_cpu_fds, | |
197 | bool is_daemon); | |
198 | void (*counter_destroy)(struct lib_counter *counter); | |
199 | int (*counter_add)(struct lib_counter *counter, | |
200 | const size_t *dimension_indexes, int64_t v); | |
201 | int (*counter_read)(struct lib_counter *counter, | |
202 | const size_t *dimension_indexes, int cpu, | |
203 | int64_t *value, bool *overflow, bool *underflow); | |
204 | int (*counter_aggregate)(struct lib_counter *counter, | |
205 | const size_t *dimension_indexes, int64_t *value, | |
206 | bool *overflow, bool *underflow); | |
207 | int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); | |
208 | }; | |
209 | ||
bb7ad29d MJ |
210 | struct lttng_counter { |
211 | int objd; | |
212 | struct lttng_event_notifier_group *event_notifier_group; /* owner */ | |
213 | struct lttng_counter_transport *transport; | |
214 | struct lib_counter *counter; | |
215 | struct lttng_counter_ops *ops; | |
216 | }; | |
217 | ||
681f6001 MD |
218 | #define LTTNG_UST_EVENT_HT_BITS 12 |
219 | #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS) | |
220 | ||
221 | struct lttng_ust_event_ht { | |
222 | struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE]; | |
223 | }; | |
224 | ||
225 | #define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12 | |
226 | #define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS) | |
227 | struct lttng_ust_event_notifier_ht { | |
228 | struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE]; | |
229 | }; | |
230 | ||
231 | #define LTTNG_UST_ENUM_HT_BITS 12 | |
232 | #define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS) | |
233 | ||
234 | struct lttng_ust_enum_ht { | |
235 | struct cds_hlist_head table[LTTNG_UST_ENUM_HT_SIZE]; | |
236 | }; | |
237 | ||
bb7ad29d MJ |
238 | struct lttng_event_notifier_group { |
239 | int objd; | |
240 | void *owner; | |
241 | int notification_fd; | |
242 | struct cds_list_head node; /* Event notifier group handle list */ | |
243 | struct cds_list_head enablers_head; | |
0c1264b0 | 244 | struct cds_list_head event_notifiers_head; /* list of event_notifiers */ |
bb7ad29d | 245 | struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */ |
0c1264b0 | 246 | struct lttng_ust_ctx *ctx; /* contexts for filters. */ |
bb7ad29d MJ |
247 | |
248 | struct lttng_counter *error_counter; | |
249 | size_t error_counter_len; | |
250 | }; | |
251 | ||
252 | struct lttng_transport { | |
253 | char *name; | |
254 | struct cds_list_head node; | |
14b6f891 | 255 | struct lttng_ust_channel_buffer_ops ops; |
bb7ad29d MJ |
256 | const struct lttng_ust_lib_ring_buffer_config *client_config; |
257 | }; | |
258 | ||
259 | struct lttng_counter_transport { | |
260 | char *name; | |
261 | struct cds_list_head node; | |
262 | struct lttng_counter_ops ops; | |
263 | const struct lib_counter_config *client_config; | |
264 | }; | |
265 | ||
80333dfa | 266 | struct lttng_ust_event_common_private { |
7ee76145 | 267 | struct lttng_ust_event_common *pub; /* Public event interface */ |
68bb7559 | 268 | |
a084756d | 269 | struct lttng_ust_event_desc *desc; |
68bb7559 MD |
270 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ |
271 | struct cds_list_head enablers_ref_head; | |
0c1264b0 | 272 | int registered; /* has reg'd tracepoint probe */ |
115db533 | 273 | uint64_t user_token; |
a2e4d05e MD |
274 | |
275 | int has_enablers_without_filter_bytecode; | |
276 | /* list of struct lttng_ust_bytecode_runtime, sorted by seqnum */ | |
277 | struct cds_list_head filter_bytecode_runtime_head; | |
68bb7559 MD |
278 | }; |
279 | ||
2e70391c | 280 | struct lttng_ust_event_recorder_private { |
80333dfa MD |
281 | struct lttng_ust_event_common_private parent; |
282 | ||
2e70391c | 283 | struct lttng_ust_event_recorder *pub; /* Public event interface */ |
ba99fbe2 MD |
284 | struct cds_list_head node; /* Event recorder list */ |
285 | struct cds_hlist_node hlist; /* Hash table of event recorders */ | |
a40b5b8c | 286 | struct lttng_ust_ctx *ctx; |
8936b6c0 | 287 | unsigned int id; |
80333dfa MD |
288 | }; |
289 | ||
115db533 MD |
290 | struct lttng_ust_event_notifier_private { |
291 | struct lttng_ust_event_common_private parent; | |
292 | ||
d7d45c0d | 293 | struct lttng_ust_event_notifier *pub; /* Public event notifier interface */ |
115db533 MD |
294 | struct lttng_event_notifier_group *group; /* weak ref */ |
295 | size_t num_captures; /* Needed to allocate the msgpack array. */ | |
296 | uint64_t error_counter_index; | |
ba99fbe2 MD |
297 | struct cds_list_head node; /* Event notifier list */ |
298 | struct cds_hlist_node hlist; /* Hash table of event notifiers */ | |
a2e4d05e | 299 | struct cds_list_head capture_bytecode_runtime_head; |
a2e4d05e | 300 | }; |
362a65de | 301 | |
a2e4d05e | 302 | struct lttng_ust_bytecode_runtime { |
22c30e27 | 303 | enum lttng_ust_bytecode_type type; |
362a65de MD |
304 | struct lttng_ust_bytecode_node *bc; |
305 | int link_failed; | |
a2e4d05e MD |
306 | int (*interpreter_func)(struct lttng_ust_bytecode_runtime *bytecode_runtime, |
307 | const char *interpreter_stack_data, | |
308 | void *ctx); | |
0c1264b0 | 309 | struct cds_list_head node; /* list of bytecode runtime in event */ |
362a65de MD |
310 | /* |
311 | * Pointer to a URCU-protected pointer owned by an `struct | |
312 | * lttng_session`or `struct lttng_event_notifier_group`. | |
313 | */ | |
daacdbfc | 314 | struct lttng_ust_ctx **pctx; |
362a65de MD |
315 | }; |
316 | ||
bdb12629 | 317 | struct lttng_ust_session_private { |
f69fe5fb | 318 | struct lttng_ust_session *pub; /* Public session interface */ |
bdb12629 MD |
319 | |
320 | int been_active; /* Been active ? */ | |
321 | int objd; /* Object associated */ | |
322 | struct cds_list_head chan_head; /* Channel list head */ | |
323 | struct cds_list_head events_head; /* list of events */ | |
324 | struct cds_list_head node; /* Session list */ | |
325 | ||
bdb12629 MD |
326 | /* List of enablers */ |
327 | struct cds_list_head enablers_head; | |
328 | struct lttng_ust_event_ht events_ht; /* ht of events */ | |
329 | void *owner; /* object owner */ | |
330 | int tstate:1; /* Transient enable state */ | |
331 | ||
bdb12629 MD |
332 | int statedump_pending:1; |
333 | ||
bdb12629 MD |
334 | struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */ |
335 | struct cds_list_head enums_head; | |
0c1264b0 | 336 | struct lttng_ust_ctx *ctx; /* contexts for filters. */ |
9daacd1a MD |
337 | |
338 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ | |
339 | bool uuid_set; /* Is uuid set ? */ | |
bdb12629 MD |
340 | }; |
341 | ||
036d17fb | 342 | struct lttng_enum { |
a084756d | 343 | struct lttng_ust_enum_desc *desc; |
f69fe5fb | 344 | struct lttng_ust_session *session; |
0c1264b0 MD |
345 | struct cds_list_head node; /* Enum list in session */ |
346 | struct cds_hlist_node hlist; /* Session ht of enums */ | |
347 | uint64_t id; /* Enumeration ID in sessiond */ | |
036d17fb MD |
348 | }; |
349 | ||
e7bc0ef6 MD |
350 | struct lttng_ust_shm_handle; |
351 | ||
14b6f891 MD |
352 | struct lttng_ust_channel_buffer_ops_private { |
353 | struct lttng_ust_channel_buffer_ops *pub; /* Public channel buffer ops interface */ | |
a880bae5 | 354 | |
e7bc0ef6 | 355 | struct lttng_ust_channel_buffer *(*channel_create)(const char *name, |
a880bae5 MD |
356 | void *buf_addr, |
357 | size_t subbuf_size, size_t num_subbuf, | |
358 | unsigned int switch_timer_interval, | |
359 | unsigned int read_timer_interval, | |
360 | unsigned char *uuid, | |
361 | uint32_t chan_id, | |
362 | const int *stream_fds, int nr_stream_fds, | |
363 | int64_t blocking_timeout); | |
e7bc0ef6 | 364 | void (*channel_destroy)(struct lttng_ust_channel_buffer *chan); |
a880bae5 MD |
365 | /* |
366 | * packet_avail_size returns the available size in the current | |
367 | * packet. Note that the size returned is only a hint, since it | |
368 | * may change due to concurrent writes. | |
369 | */ | |
07539b34 MD |
370 | size_t (*packet_avail_size)(struct lttng_ust_channel_buffer *chan); |
371 | int (*is_finalized)(struct lttng_ust_channel_buffer *chan); | |
372 | int (*is_disabled)(struct lttng_ust_channel_buffer *chan); | |
373 | int (*flush_buffer)(struct lttng_ust_channel_buffer *chan); | |
a880bae5 MD |
374 | }; |
375 | ||
e7bc0ef6 MD |
376 | struct lttng_ust_channel_common_private { |
377 | struct lttng_ust_channel_common *pub; /* Public channel interface */ | |
378 | ||
0c1264b0 MD |
379 | int objd; /* Object associated with channel. */ |
380 | int tstate:1; /* Transient enable state */ | |
e7bc0ef6 MD |
381 | }; |
382 | ||
383 | struct lttng_ust_channel_buffer_private { | |
384 | struct lttng_ust_channel_common_private parent; | |
385 | ||
386 | struct lttng_ust_channel_buffer *pub; /* Public channel buffer interface */ | |
0c1264b0 MD |
387 | struct cds_list_head node; /* Channel list in session */ |
388 | int header_type; /* 0: unset, 1: compact, 2: large */ | |
389 | unsigned int id; /* Channel ID */ | |
e7bc0ef6 | 390 | enum lttng_ust_abi_chan_type type; |
0950190a | 391 | struct lttng_ust_ctx *ctx; |
07539b34 | 392 | struct lttng_ust_lib_ring_buffer_channel *rb_chan; /* Ring buffer channel */ |
e7bc0ef6 MD |
393 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ |
394 | }; | |
395 | ||
f0fde1c3 MD |
396 | /* |
397 | * IMPORTANT: this structure is part of the ABI between the consumer | |
398 | * daemon and the UST library within traced applications. Changing it | |
399 | * breaks the UST communication protocol. | |
400 | * | |
401 | * TODO: remove unused fields on next UST communication protocol | |
402 | * breaking update. | |
403 | */ | |
404 | struct lttng_ust_abi_channel_config { | |
405 | void *unused1; | |
406 | int unused2; | |
407 | void *unused3; | |
408 | void *unused4; | |
409 | int unused5; | |
410 | struct cds_list_head unused6; | |
411 | void *unused7; | |
412 | int unused8; | |
413 | void *unused9; | |
414 | ||
415 | /* Channel ID */ | |
416 | unsigned int id; | |
417 | enum lttng_ust_abi_chan_type unused10; | |
418 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ | |
419 | int unused11:1; | |
420 | }; | |
421 | ||
a084756d MD |
422 | static inline |
423 | struct lttng_ust_type_integer *lttng_ust_get_type_integer(struct lttng_ust_type_common *type) | |
424 | { | |
425 | if (type->type != lttng_ust_type_integer) | |
426 | return NULL; | |
427 | return caa_container_of(type, struct lttng_ust_type_integer, parent); | |
428 | } | |
429 | ||
430 | static inline | |
431 | struct lttng_ust_type_float *lttng_ust_get_type_float(struct lttng_ust_type_common *type) | |
432 | { | |
433 | if (type->type != lttng_ust_type_float) | |
434 | return NULL; | |
435 | return caa_container_of(type, struct lttng_ust_type_float, parent); | |
436 | } | |
437 | ||
438 | static inline | |
439 | struct lttng_ust_type_string *lttng_ust_get_type_string(struct lttng_ust_type_common *type) | |
440 | { | |
441 | if (type->type != lttng_ust_type_string) | |
442 | return NULL; | |
443 | return caa_container_of(type, struct lttng_ust_type_string, parent); | |
444 | } | |
445 | ||
446 | static inline | |
447 | struct lttng_ust_type_enum *lttng_ust_get_type_enum(struct lttng_ust_type_common *type) | |
448 | { | |
449 | if (type->type != lttng_ust_type_enum) | |
450 | return NULL; | |
451 | return caa_container_of(type, struct lttng_ust_type_enum, parent); | |
452 | } | |
453 | ||
454 | static inline | |
455 | struct lttng_ust_type_array *lttng_ust_get_type_array(struct lttng_ust_type_common *type) | |
456 | { | |
457 | if (type->type != lttng_ust_type_array) | |
458 | return NULL; | |
459 | return caa_container_of(type, struct lttng_ust_type_array, parent); | |
460 | } | |
461 | ||
462 | static inline | |
463 | struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(struct lttng_ust_type_common *type) | |
464 | { | |
465 | if (type->type != lttng_ust_type_sequence) | |
466 | return NULL; | |
467 | return caa_container_of(type, struct lttng_ust_type_sequence, parent); | |
468 | } | |
469 | ||
470 | static inline | |
471 | struct lttng_ust_type_struct *lttng_ust_get_type_struct(struct lttng_ust_type_common *type) | |
472 | { | |
473 | if (type->type != lttng_ust_type_struct) | |
474 | return NULL; | |
475 | return caa_container_of(type, struct lttng_ust_type_struct, parent); | |
476 | } | |
477 | ||
478 | /* Create dynamically allocated types. */ | |
479 | static inline | |
480 | struct lttng_ust_type_common *lttng_ust_create_type_integer(unsigned int size, | |
481 | unsigned short alignment, bool signedness, unsigned int byte_order, | |
482 | unsigned int base) | |
483 | { | |
484 | struct lttng_ust_type_integer *integer_type; | |
485 | ||
486 | integer_type = zmalloc(sizeof(struct lttng_ust_type_integer)); | |
487 | if (!integer_type) | |
488 | return NULL; | |
489 | integer_type->parent.type = lttng_ust_type_integer; | |
490 | integer_type->struct_size = sizeof(struct lttng_ust_type_integer); | |
491 | integer_type->size = size; | |
492 | integer_type->alignment = alignment; | |
493 | integer_type->signedness = signedness; | |
494 | integer_type->reverse_byte_order = byte_order != BYTE_ORDER; | |
495 | integer_type->base = base; | |
496 | return (struct lttng_ust_type_common *) integer_type; | |
497 | } | |
498 | ||
499 | static inline | |
500 | struct lttng_ust_type_common *lttng_ust_create_type_array_text(unsigned int length) | |
501 | { | |
502 | struct lttng_ust_type_array *array_type; | |
503 | ||
504 | array_type = zmalloc(sizeof(struct lttng_ust_type_array)); | |
505 | if (!array_type) | |
506 | return NULL; | |
507 | array_type->parent.type = lttng_ust_type_array; | |
508 | array_type->struct_size = sizeof(struct lttng_ust_type_array); | |
509 | array_type->length = length; | |
510 | array_type->alignment = 0; | |
511 | array_type->encoding = lttng_ust_string_encoding_UTF8; | |
512 | array_type->elem_type = lttng_ust_create_type_integer(sizeof(char) * CHAR_BIT, | |
dc325c1d | 513 | lttng_ust_rb_alignof(char) * CHAR_BIT, lttng_ust_is_signed_type(char), |
a084756d MD |
514 | BYTE_ORDER, 10); |
515 | if (!array_type->elem_type) | |
516 | goto error_elem; | |
517 | return (struct lttng_ust_type_common *) array_type; | |
518 | ||
519 | error_elem: | |
520 | free(array_type); | |
521 | return NULL; | |
522 | } | |
523 | ||
524 | /* | |
525 | * Destroy dynamically allocated types, including nested types. | |
526 | * For enumerations, it does not free the enumeration mapping description. | |
527 | */ | |
528 | static inline | |
529 | void lttng_ust_destroy_type(struct lttng_ust_type_common *type) | |
530 | { | |
531 | if (!type) | |
532 | return; | |
533 | ||
534 | switch (type->type) { | |
535 | case lttng_ust_type_integer: | |
536 | case lttng_ust_type_string: | |
537 | case lttng_ust_type_float: | |
538 | case lttng_ust_type_dynamic: | |
539 | free(type); | |
540 | break; | |
541 | case lttng_ust_type_enum: | |
542 | { | |
543 | struct lttng_ust_type_enum *enum_type = (struct lttng_ust_type_enum *) type; | |
544 | ||
545 | lttng_ust_destroy_type(enum_type->container_type); | |
a9d86fd1 | 546 | free(enum_type); |
a084756d MD |
547 | break; |
548 | } | |
549 | case lttng_ust_type_array: | |
550 | { | |
551 | struct lttng_ust_type_array *array_type = (struct lttng_ust_type_array *) type; | |
552 | ||
553 | lttng_ust_destroy_type(array_type->elem_type); | |
a9d86fd1 | 554 | free(array_type); |
a084756d MD |
555 | break; |
556 | } | |
557 | case lttng_ust_type_sequence: | |
558 | { | |
559 | struct lttng_ust_type_sequence *sequence_type = (struct lttng_ust_type_sequence *) type; | |
560 | ||
561 | lttng_ust_destroy_type(sequence_type->elem_type); | |
a9d86fd1 | 562 | free(sequence_type); |
a084756d MD |
563 | break; |
564 | } | |
565 | case lttng_ust_type_struct: | |
566 | { | |
567 | struct lttng_ust_type_struct *struct_type = (struct lttng_ust_type_struct *) type; | |
568 | unsigned int i; | |
569 | ||
570 | for (i = 0; i < struct_type->nr_fields; i++) | |
571 | lttng_ust_destroy_type(struct_type->fields[i]->type); | |
a9d86fd1 | 572 | free(struct_type); |
a084756d MD |
573 | break; |
574 | } | |
575 | default: | |
576 | abort(); | |
577 | } | |
578 | } | |
579 | ||
d871c65b FD |
580 | static inline |
581 | struct lttng_enabler *lttng_event_enabler_as_enabler( | |
582 | struct lttng_event_enabler *event_enabler) | |
583 | { | |
584 | return &event_enabler->base; | |
585 | } | |
586 | ||
d8d2416d FD |
587 | static inline |
588 | struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( | |
589 | struct lttng_event_notifier_enabler *event_notifier_enabler) | |
590 | { | |
591 | return &event_notifier_enabler->base; | |
592 | } | |
d871c65b FD |
593 | |
594 | /* | |
595 | * Allocate and initialize a `struct lttng_event_enabler` object. | |
596 | * | |
597 | * On success, returns a `struct lttng_event_enabler`, | |
598 | * On memory error, returns NULL. | |
599 | */ | |
ddabe860 | 600 | __attribute__((visibility("hidden"))) |
d871c65b FD |
601 | struct lttng_event_enabler *lttng_event_enabler_create( |
602 | enum lttng_enabler_format_type format_type, | |
fd17d7ce | 603 | struct lttng_ust_abi_event *event_param, |
e7bc0ef6 | 604 | struct lttng_ust_channel_buffer *chan); |
d871c65b FD |
605 | |
606 | /* | |
607 | * Destroy a `struct lttng_event_enabler` object. | |
608 | */ | |
ddabe860 | 609 | __attribute__((visibility("hidden"))) |
d871c65b FD |
610 | void lttng_event_enabler_destroy(struct lttng_event_enabler *enabler); |
611 | ||
612 | /* | |
613 | * Enable a `struct lttng_event_enabler` object and all events related to this | |
614 | * enabler. | |
615 | */ | |
ddabe860 | 616 | __attribute__((visibility("hidden"))) |
d871c65b FD |
617 | int lttng_event_enabler_enable(struct lttng_event_enabler *enabler); |
618 | ||
619 | /* | |
620 | * Disable a `struct lttng_event_enabler` object and all events related to this | |
621 | * enabler. | |
622 | */ | |
ddabe860 | 623 | __attribute__((visibility("hidden"))) |
d871c65b FD |
624 | int lttng_event_enabler_disable(struct lttng_event_enabler *enabler); |
625 | ||
626 | /* | |
627 | * Attach filter bytecode program to `struct lttng_event_enabler` and all | |
628 | * events related to this enabler. | |
629 | */ | |
ddabe860 | 630 | __attribute__((visibility("hidden"))) |
a56fd376 FD |
631 | int lttng_event_enabler_attach_filter_bytecode( |
632 | struct lttng_event_enabler *enabler, | |
ab89263e | 633 | struct lttng_ust_bytecode_node **bytecode); |
d871c65b FD |
634 | |
635 | /* | |
636 | * Attach an application context to an event enabler. | |
637 | * | |
638 | * Not implemented. | |
639 | */ | |
ddabe860 | 640 | __attribute__((visibility("hidden"))) |
d871c65b | 641 | int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler, |
fd17d7ce | 642 | struct lttng_ust_abi_context *ctx); |
d871c65b FD |
643 | |
644 | /* | |
645 | * Attach exclusion list to `struct lttng_event_enabler` and all | |
646 | * events related to this enabler. | |
647 | */ | |
ddabe860 | 648 | __attribute__((visibility("hidden"))) |
d871c65b | 649 | int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler, |
e9fe6aad | 650 | struct lttng_ust_excluder_node **excluder); |
d871c65b FD |
651 | |
652 | /* | |
d37ecb3f FD |
653 | * Synchronize bytecodes for the enabler and the instance (event or |
654 | * event_notifier). | |
d871c65b | 655 | * |
621c07fc | 656 | * This function goes over all bytecode programs of the enabler (event or |
d37ecb3f | 657 | * event_notifier enabler) to ensure each is linked to the provided instance. |
d871c65b | 658 | */ |
ddabe860 | 659 | __attribute__((visibility("hidden"))) |
a084756d | 660 | void lttng_enabler_link_bytecode(struct lttng_ust_event_desc *event_desc, |
daacdbfc | 661 | struct lttng_ust_ctx **ctx, |
621c07fc FD |
662 | struct cds_list_head *instance_bytecode_runtime_head, |
663 | struct cds_list_head *enabler_bytecode_runtime_head); | |
d871c65b | 664 | |
d8d2416d FD |
665 | /* |
666 | * Allocate and initialize a `struct lttng_event_notifier_group` object. | |
667 | * | |
668 | * On success, returns a `struct lttng_triggre_group`, | |
669 | * on memory error, returns NULL. | |
670 | */ | |
ddabe860 | 671 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
672 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); |
673 | ||
674 | /* | |
675 | * Destroy a `struct lttng_event_notifier_group` object. | |
676 | */ | |
ddabe860 | 677 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
678 | void lttng_event_notifier_group_destroy( |
679 | struct lttng_event_notifier_group *event_notifier_group); | |
680 | ||
681 | /* | |
682 | * Allocate and initialize a `struct lttng_event_notifier_enabler` object. | |
683 | * | |
684 | * On success, returns a `struct lttng_event_notifier_enabler`, | |
685 | * On memory error, returns NULL. | |
686 | */ | |
ddabe860 | 687 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
688 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( |
689 | struct lttng_event_notifier_group *event_notifier_group, | |
690 | enum lttng_enabler_format_type format_type, | |
fd17d7ce | 691 | struct lttng_ust_abi_event_notifier *event_notifier_param); |
d8d2416d FD |
692 | |
693 | /* | |
694 | * Destroy a `struct lttng_event_notifier_enabler` object. | |
695 | */ | |
ddabe860 | 696 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
697 | void lttng_event_notifier_enabler_destroy( |
698 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
699 | ||
700 | /* | |
701 | * Enable a `struct lttng_event_notifier_enabler` object and all event | |
702 | * notifiers related to this enabler. | |
703 | */ | |
ddabe860 | 704 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
705 | int lttng_event_notifier_enabler_enable( |
706 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
707 | ||
708 | /* | |
709 | * Disable a `struct lttng_event_notifier_enabler` object and all event | |
710 | * notifiers related to this enabler. | |
711 | */ | |
ddabe860 | 712 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
713 | int lttng_event_notifier_enabler_disable( |
714 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
715 | ||
716 | /* | |
717 | * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and | |
718 | * all event notifiers related to this enabler. | |
719 | */ | |
ddabe860 | 720 | __attribute__((visibility("hidden"))) |
a56fd376 | 721 | int lttng_event_notifier_enabler_attach_filter_bytecode( |
d8d2416d | 722 | struct lttng_event_notifier_enabler *event_notifier_enabler, |
ab89263e | 723 | struct lttng_ust_bytecode_node **bytecode); |
d8d2416d | 724 | |
d37ecb3f FD |
725 | /* |
726 | * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and | |
727 | * all event_notifiers related to this enabler. | |
728 | */ | |
ddabe860 | 729 | __attribute__((visibility("hidden"))) |
d37ecb3f FD |
730 | int lttng_event_notifier_enabler_attach_capture_bytecode( |
731 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
49cde654 | 732 | struct lttng_ust_bytecode_node **bytecode); |
d37ecb3f | 733 | |
d8d2416d FD |
734 | /* |
735 | * Attach exclusion list to `struct lttng_event_notifier_enabler` and all | |
736 | * event notifiers related to this enabler. | |
737 | */ | |
ddabe860 | 738 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
739 | int lttng_event_notifier_enabler_attach_exclusion( |
740 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
e9fe6aad | 741 | struct lttng_ust_excluder_node **excluder); |
d8d2416d | 742 | |
ddabe860 | 743 | __attribute__((visibility("hidden"))) |
b1f720f0 | 744 | void lttng_free_event_filter_runtime(struct lttng_ust_event_common *event); |
d8d2416d FD |
745 | |
746 | /* | |
747 | * Connect the probe on all enablers matching this event description. | |
748 | * Called on library load. | |
749 | */ | |
ddabe860 | 750 | __attribute__((visibility("hidden"))) |
d8d2416d FD |
751 | int lttng_fix_pending_event_notifiers(void); |
752 | ||
ddabe860 | 753 | __attribute__((visibility("hidden"))) |
67d4e8f5 MJ |
754 | struct lttng_counter *lttng_ust_counter_create( |
755 | const char *counter_transport_name, | |
756 | size_t number_dimensions, const struct lttng_counter_dimension *dimensions); | |
757 | ||
eeef0055 | 758 | #ifdef HAVE_LINUX_PERF_EVENT_H |
bd8c1787 | 759 | |
ddabe860 | 760 | __attribute__((visibility("hidden"))) |
bd8c1787 MJ |
761 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
762 | uint64_t config, | |
763 | const char *name, | |
daacdbfc | 764 | struct lttng_ust_ctx **ctx); |
ddabe860 MJ |
765 | |
766 | __attribute__((visibility("hidden"))) | |
bd8c1787 | 767 | int lttng_perf_counter_init(void); |
ddabe860 MJ |
768 | |
769 | __attribute__((visibility("hidden"))) | |
bd8c1787 MJ |
770 | void lttng_perf_counter_exit(void); |
771 | ||
eeef0055 | 772 | #else /* #ifdef HAVE_LINUX_PERF_EVENT_H */ |
bd8c1787 MJ |
773 | |
774 | static inline | |
775 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
776 | uint64_t config, | |
777 | const char *name, | |
daacdbfc | 778 | struct lttng_ust_ctx **ctx) |
bd8c1787 MJ |
779 | { |
780 | return -ENOSYS; | |
781 | } | |
782 | static inline | |
783 | int lttng_perf_counter_init(void) | |
784 | { | |
785 | return 0; | |
786 | } | |
787 | static inline | |
788 | void lttng_perf_counter_exit(void) | |
789 | { | |
790 | } | |
eeef0055 | 791 | #endif /* #else #ifdef HAVE_LINUX_PERF_EVENT_H */ |
bd8c1787 | 792 | |
ddabe860 | 793 | __attribute__((visibility("hidden"))) |
7753d283 | 794 | int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list); |
ddabe860 MJ |
795 | |
796 | __attribute__((visibility("hidden"))) | |
7753d283 MJ |
797 | void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list); |
798 | ||
ddabe860 | 799 | __attribute__((visibility("hidden"))) |
7753d283 | 800 | int lttng_probes_get_field_list(struct lttng_ust_field_list *list); |
ddabe860 MJ |
801 | |
802 | __attribute__((visibility("hidden"))) | |
7753d283 MJ |
803 | void lttng_probes_prune_field_list(struct lttng_ust_field_list *list); |
804 | ||
ddabe860 | 805 | __attribute__((visibility("hidden"))) |
fd17d7ce | 806 | struct lttng_ust_abi_tracepoint_iter * |
7753d283 | 807 | lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list); |
ddabe860 MJ |
808 | |
809 | __attribute__((visibility("hidden"))) | |
fd17d7ce | 810 | struct lttng_ust_abi_field_iter * |
7753d283 MJ |
811 | lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list); |
812 | ||
ddabe860 | 813 | __attribute__((visibility("hidden"))) |
f69fe5fb | 814 | struct lttng_ust_session *lttng_session_create(void); |
ddabe860 MJ |
815 | |
816 | __attribute__((visibility("hidden"))) | |
f69fe5fb | 817 | int lttng_session_enable(struct lttng_ust_session *session); |
ddabe860 MJ |
818 | |
819 | __attribute__((visibility("hidden"))) | |
f69fe5fb | 820 | int lttng_session_disable(struct lttng_ust_session *session); |
ddabe860 MJ |
821 | |
822 | __attribute__((visibility("hidden"))) | |
f69fe5fb | 823 | int lttng_session_statedump(struct lttng_ust_session *session); |
ddabe860 MJ |
824 | |
825 | __attribute__((visibility("hidden"))) | |
f69fe5fb | 826 | void lttng_session_destroy(struct lttng_ust_session *session); |
7753d283 | 827 | |
a5ae46cc MJ |
828 | /* |
829 | * Called with ust lock held. | |
830 | */ | |
831 | __attribute__((visibility("hidden"))) | |
832 | int lttng_session_active(void); | |
833 | ||
ddabe860 | 834 | __attribute__((visibility("hidden"))) |
7753d283 MJ |
835 | struct cds_list_head *lttng_get_sessions(void); |
836 | ||
ddabe860 | 837 | __attribute__((visibility("hidden"))) |
7753d283 MJ |
838 | void lttng_handle_pending_statedump(void *owner); |
839 | ||
ddabe860 | 840 | __attribute__((visibility("hidden"))) |
e7bc0ef6 | 841 | int lttng_channel_enable(struct lttng_ust_channel_common *lttng_channel); |
7753d283 | 842 | |
ddabe860 | 843 | __attribute__((visibility("hidden"))) |
e7bc0ef6 | 844 | int lttng_channel_disable(struct lttng_ust_channel_common *lttng_channel); |
7753d283 | 845 | |
ddabe860 | 846 | __attribute__((visibility("hidden"))) |
7753d283 | 847 | void lttng_transport_register(struct lttng_transport *transport); |
ddabe860 MJ |
848 | |
849 | __attribute__((visibility("hidden"))) | |
7753d283 MJ |
850 | void lttng_transport_unregister(struct lttng_transport *transport); |
851 | ||
65c48d6a MJ |
852 | /* This is ABI between liblttng-ust and liblttng-ust-ctl */ |
853 | struct lttng_transport *lttng_ust_transport_find(const char *name); | |
854 | ||
cbba5e04 MJ |
855 | /* This is ABI between liblttng-ust and liblttng-ust-dl */ |
856 | void lttng_ust_dl_update(void *ip); | |
857 | ||
ddabe860 | 858 | __attribute__((visibility("hidden"))) |
dc11f93f | 859 | void lttng_probe_provider_unregister_events(struct lttng_ust_probe_desc *desc); |
7753d283 | 860 | |
ddabe860 | 861 | __attribute__((visibility("hidden"))) |
7753d283 MJ |
862 | int lttng_fix_pending_events(void); |
863 | ||
ddabe860 | 864 | __attribute__((visibility("hidden"))) |
7753d283 MJ |
865 | struct cds_list_head *lttng_get_probe_list_head(void); |
866 | ||
ddabe860 | 867 | __attribute__((visibility("hidden"))) |
f69fe5fb | 868 | struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session, |
a084756d | 869 | struct lttng_ust_enum_desc *enum_desc); |
7753d283 | 870 | |
ddabe860 | 871 | __attribute__((visibility("hidden"))) |
fd17d7ce MD |
872 | int lttng_abi_create_root_handle(void); |
873 | ||
ddabe860 | 874 | __attribute__((visibility("hidden"))) |
fd17d7ce | 875 | const struct lttng_ust_abi_objd_ops *lttng_ust_abi_objd_ops(int id); |
ddabe860 MJ |
876 | |
877 | __attribute__((visibility("hidden"))) | |
fd17d7ce | 878 | int lttng_ust_abi_objd_unref(int id, int is_owner); |
ddabe860 MJ |
879 | |
880 | __attribute__((visibility("hidden"))) | |
fd17d7ce | 881 | void lttng_ust_abi_exit(void); |
ddabe860 MJ |
882 | |
883 | __attribute__((visibility("hidden"))) | |
fd17d7ce | 884 | void lttng_ust_abi_events_exit(void); |
ddabe860 MJ |
885 | |
886 | __attribute__((visibility("hidden"))) | |
fd17d7ce MD |
887 | void lttng_ust_abi_objd_table_owner_cleanup(void *owner); |
888 | ||
e7bc0ef6 MD |
889 | __attribute__((visibility("hidden"))) |
890 | struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void); | |
891 | ||
892 | __attribute__((visibility("hidden"))) | |
893 | void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan); | |
894 | ||
a2e4d05e MD |
895 | __attribute__((visibility("hidden"))) |
896 | int lttng_ust_interpret_event_filter(struct lttng_ust_event_common *event, | |
897 | const char *interpreter_stack_data, | |
898 | void *filter_ctx); | |
899 | ||
9daacd1a MD |
900 | __attribute__((visibility("hidden"))) |
901 | int lttng_ust_session_uuid_validate(struct lttng_ust_session *session, | |
902 | unsigned char *uuid); | |
903 | ||
5b4c6da4 MD |
904 | __attribute__((visibility("hidden"))) |
905 | bool lttng_ust_validate_event_name(const struct lttng_ust_event_desc *desc); | |
906 | ||
907 | __attribute__((visibility("hidden"))) | |
908 | void lttng_ust_format_event_name(const struct lttng_ust_event_desc *desc, | |
909 | char *name); | |
910 | ||
d871c65b | 911 | #endif /* _LTTNG_UST_EVENTS_INTERNAL_H */ |