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51489cad MD |
1 | #ifndef _LTTNG_UST_EVENTS_H |
2 | #define _LTTNG_UST_EVENTS_H | |
8020ceb5 MD |
3 | |
4 | /* | |
51489cad | 5 | * lttng/ust-events.h |
8020ceb5 | 6 | * |
e92f3e28 | 7 | * Copyright 2010-2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
8020ceb5 MD |
8 | * |
9 | * Holds LTTng per-session event registry. | |
10 | * | |
e92f3e28 MD |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
a60d70e6 | 17 | * |
e92f3e28 MD |
18 | * The above copyright notice and this permission notice shall be included in |
19 | * all copies or substantial portions of the Software. | |
d2428e87 MD |
20 | * |
21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
27 | * SOFTWARE. | |
8020ceb5 MD |
28 | */ |
29 | ||
9f3fdbc6 | 30 | #include <urcu/list.h> |
1f18504e | 31 | #include <urcu/hlist.h> |
b4051ad8 | 32 | #include <stddef.h> |
9f3fdbc6 | 33 | #include <stdint.h> |
d58d1454 | 34 | #include <lttng/ust-config.h> |
4318ae1b MD |
35 | #include <lttng/ust-abi.h> |
36 | #include <lttng/ust-tracer.h> | |
2ae57758 | 37 | #include <lttng/ust-endian.h> |
20f1eee7 | 38 | #include <float.h> |
d58d1454 MD |
39 | #include <errno.h> |
40 | #include <urcu/ref.h> | |
41 | #include <pthread.h> | |
8020ceb5 | 42 | |
db56acaf MD |
43 | #ifndef LTTNG_PACKED |
44 | #error "LTTNG_PACKED should be defined" | |
45 | #endif | |
46 | ||
6453d237 MD |
47 | #ifdef __cplusplus |
48 | extern "C" { | |
49 | #endif | |
50 | ||
19d8b1b3 MD |
51 | #define LTTNG_UST_UUID_LEN 16 |
52 | ||
71d31690 MD |
53 | /* |
54 | * Tracepoint provider version. Compatibility based on the major number. | |
55 | * Older tracepoint providers can always register to newer lttng-ust | |
56 | * library, but the opposite is rejected: a newer tracepoint provider is | |
57 | * rejected by an older lttng-ust library. | |
58 | */ | |
04f0b55a | 59 | #define LTTNG_UST_PROVIDER_MAJOR 2 |
71d31690 MD |
60 | #define LTTNG_UST_PROVIDER_MINOR 0 |
61 | ||
7dd08bec MD |
62 | struct lttng_channel; |
63 | struct lttng_session; | |
4cfec15c | 64 | struct lttng_ust_lib_ring_buffer_ctx; |
53569322 MD |
65 | struct lttng_ust_context_app; |
66 | struct lttng_event_field; | |
ebabbf58 | 67 | struct lttng_event_notifier_group; |
8020ceb5 | 68 | |
37d5e202 MD |
69 | /* |
70 | * Data structures used by tracepoint event declarations, and by the | |
71 | * tracer. Those structures have padding for future extension. | |
72 | */ | |
73 | ||
c1fca457 MD |
74 | /* |
75 | * LTTng client type enumeration. Used by the consumer to map the | |
76 | * callbacks from its own address space. | |
77 | */ | |
78 | enum lttng_client_types { | |
79 | LTTNG_CLIENT_METADATA = 0, | |
80 | LTTNG_CLIENT_DISCARD = 1, | |
81 | LTTNG_CLIENT_OVERWRITE = 2, | |
34a91bdb MD |
82 | LTTNG_CLIENT_DISCARD_RT = 3, |
83 | LTTNG_CLIENT_OVERWRITE_RT = 4, | |
c1fca457 MD |
84 | LTTNG_NR_CLIENT_TYPES, |
85 | }; | |
86 | ||
8020ceb5 MD |
87 | /* Type description */ |
88 | ||
89 | /* Update the astract_types name table in lttng-types.c along with this enum */ | |
7dd08bec | 90 | enum lttng_abstract_types { |
8020ceb5 | 91 | atype_integer, |
218deb69 MD |
92 | atype_enum, /* legacy */ |
93 | atype_array, /* legacy */ | |
94 | atype_sequence, /* legacy */ | |
8020ceb5 | 95 | atype_string, |
20f1eee7 | 96 | atype_float, |
53569322 | 97 | atype_dynamic, |
218deb69 MD |
98 | atype_struct, /* legacy */ |
99 | atype_enum_nestable, | |
100 | atype_array_nestable, | |
101 | atype_sequence_nestable, | |
102 | atype_struct_nestable, | |
8020ceb5 MD |
103 | NR_ABSTRACT_TYPES, |
104 | }; | |
105 | ||
106 | /* Update the string_encodings name table in lttng-types.c along with this enum */ | |
107 | enum lttng_string_encodings { | |
108 | lttng_encode_none = 0, | |
109 | lttng_encode_UTF8 = 1, | |
110 | lttng_encode_ASCII = 2, | |
111 | NR_STRING_ENCODINGS, | |
112 | }; | |
113 | ||
a6f80644 MD |
114 | struct lttng_enum_value { |
115 | unsigned long long value; | |
116 | unsigned int signedness:1; | |
117 | }; | |
118 | ||
3e762260 PP |
119 | enum lttng_enum_entry_options { |
120 | LTTNG_ENUM_ENTRY_OPTION_IS_AUTO = 1U << 0, | |
121 | }; | |
122 | ||
37d5e202 | 123 | #define LTTNG_UST_ENUM_ENTRY_PADDING 16 |
8020ceb5 | 124 | struct lttng_enum_entry { |
a6f80644 | 125 | struct lttng_enum_value start, end; /* start and end are inclusive */ |
8020ceb5 | 126 | const char *string; |
3e762260 PP |
127 | union { |
128 | struct { | |
129 | unsigned int options; | |
130 | } LTTNG_PACKED extra; | |
131 | char padding[LTTNG_UST_ENUM_ENTRY_PADDING]; | |
132 | } u; | |
8020ceb5 MD |
133 | }; |
134 | ||
135 | #define __type_integer(_type, _byte_order, _base, _encoding) \ | |
136 | { \ | |
46d52200 ZT |
137 | .atype = atype_integer, \ |
138 | .u = \ | |
8020ceb5 | 139 | { \ |
218deb69 | 140 | .integer = \ |
46d52200 | 141 | { \ |
218deb69 MD |
142 | .size = sizeof(_type) * CHAR_BIT, \ |
143 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ | |
144 | .signedness = lttng_is_signed_type(_type), \ | |
145 | .reverse_byte_order = _byte_order != BYTE_ORDER, \ | |
146 | .base = _base, \ | |
147 | .encoding = lttng_encode_##_encoding, \ | |
46d52200 | 148 | } \ |
8020ceb5 MD |
149 | }, \ |
150 | } \ | |
151 | ||
37d5e202 | 152 | #define LTTNG_UST_INTEGER_TYPE_PADDING 24 |
8020ceb5 MD |
153 | struct lttng_integer_type { |
154 | unsigned int size; /* in bits */ | |
155 | unsigned short alignment; /* in bits */ | |
156 | unsigned int signedness:1; | |
157 | unsigned int reverse_byte_order:1; | |
158 | unsigned int base; /* 2, 8, 10, 16, for pretty print */ | |
159 | enum lttng_string_encodings encoding; | |
37d5e202 | 160 | char padding[LTTNG_UST_INTEGER_TYPE_PADDING]; |
8020ceb5 MD |
161 | }; |
162 | ||
d3ed854b MD |
163 | /* |
164 | * Only float and double are supported. long double is not supported at | |
165 | * the moment. | |
166 | */ | |
20f1eee7 MD |
167 | #define _float_mant_dig(_type) \ |
168 | (sizeof(_type) == sizeof(float) ? FLT_MANT_DIG \ | |
169 | : (sizeof(_type) == sizeof(double) ? DBL_MANT_DIG \ | |
d3ed854b | 170 | : 0)) |
20f1eee7 MD |
171 | |
172 | #define __type_float(_type) \ | |
173 | { \ | |
46d52200 ZT |
174 | .atype = atype_float, \ |
175 | .u = \ | |
20f1eee7 | 176 | { \ |
218deb69 | 177 | ._float = \ |
46d52200 | 178 | { \ |
218deb69 MD |
179 | .exp_dig = sizeof(_type) * CHAR_BIT \ |
180 | - _float_mant_dig(_type), \ | |
181 | .mant_dig = _float_mant_dig(_type), \ | |
182 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ | |
183 | .reverse_byte_order = BYTE_ORDER != FLOAT_WORD_ORDER, \ | |
46d52200 | 184 | } \ |
218deb69 | 185 | } \ |
20f1eee7 MD |
186 | } \ |
187 | ||
37d5e202 | 188 | #define LTTNG_UST_FLOAT_TYPE_PADDING 24 |
20f1eee7 MD |
189 | struct lttng_float_type { |
190 | unsigned int exp_dig; /* exponent digits, in bits */ | |
191 | unsigned int mant_dig; /* mantissa digits, in bits */ | |
192 | unsigned short alignment; /* in bits */ | |
193 | unsigned int reverse_byte_order:1; | |
37d5e202 | 194 | char padding[LTTNG_UST_FLOAT_TYPE_PADDING]; |
20f1eee7 MD |
195 | }; |
196 | ||
218deb69 | 197 | /* legacy */ |
37d5e202 | 198 | #define LTTNG_UST_BASIC_TYPE_PADDING 128 |
8020ceb5 | 199 | union _lttng_basic_type { |
218deb69 | 200 | struct lttng_integer_type integer; /* legacy */ |
8020ceb5 | 201 | struct { |
c785c634 MD |
202 | const struct lttng_enum_desc *desc; /* Enumeration mapping */ |
203 | struct lttng_integer_type container_type; | |
218deb69 | 204 | } enumeration; /* legacy */ |
8020ceb5 MD |
205 | struct { |
206 | enum lttng_string_encodings encoding; | |
218deb69 MD |
207 | } string; /* legacy */ |
208 | struct lttng_float_type _float; /* legacy */ | |
37d5e202 | 209 | char padding[LTTNG_UST_BASIC_TYPE_PADDING]; |
8020ceb5 MD |
210 | }; |
211 | ||
218deb69 | 212 | /* legacy */ |
8020ceb5 | 213 | struct lttng_basic_type { |
7dd08bec | 214 | enum lttng_abstract_types atype; |
8020ceb5 MD |
215 | union { |
216 | union _lttng_basic_type basic; | |
217 | } u; | |
218 | }; | |
219 | ||
37d5e202 | 220 | #define LTTNG_UST_TYPE_PADDING 128 |
8020ceb5 | 221 | struct lttng_type { |
7dd08bec | 222 | enum lttng_abstract_types atype; |
8020ceb5 | 223 | union { |
218deb69 MD |
224 | /* provider ABI 2.0 */ |
225 | struct lttng_integer_type integer; | |
226 | struct lttng_float_type _float; | |
227 | struct { | |
228 | enum lttng_string_encodings encoding; | |
229 | } string; | |
230 | struct { | |
231 | const struct lttng_enum_desc *desc; /* Enumeration mapping */ | |
232 | struct lttng_type *container_type; | |
233 | } enum_nestable; | |
8020ceb5 | 234 | struct { |
218deb69 MD |
235 | const struct lttng_type *elem_type; |
236 | unsigned int length; /* Num. elems. */ | |
237 | unsigned int alignment; | |
238 | } array_nestable; | |
8020ceb5 | 239 | struct { |
218deb69 MD |
240 | const char *length_name; /* Length field name. */ |
241 | const struct lttng_type *elem_type; | |
242 | unsigned int alignment; /* Alignment before elements. */ | |
243 | } sequence_nestable; | |
53569322 | 244 | struct { |
218deb69 MD |
245 | unsigned int nr_fields; |
246 | const struct lttng_event_field *fields; /* Array of fields. */ | |
247 | unsigned int alignment; | |
248 | } struct_nestable; | |
249 | ||
250 | union { | |
251 | /* legacy provider ABI 1.0 */ | |
252 | union _lttng_basic_type basic; /* legacy */ | |
253 | struct { | |
254 | struct lttng_basic_type elem_type; | |
255 | unsigned int length; /* Num. elems. */ | |
256 | } array; /* legacy */ | |
257 | struct { | |
258 | struct lttng_basic_type length_type; | |
259 | struct lttng_basic_type elem_type; | |
260 | } sequence; /* legacy */ | |
261 | struct { | |
262 | unsigned int nr_fields; | |
263 | struct lttng_event_field *fields; /* Array of fields. */ | |
264 | } _struct; /* legacy */ | |
265 | } legacy; | |
37d5e202 | 266 | char padding[LTTNG_UST_TYPE_PADDING]; |
8020ceb5 MD |
267 | } u; |
268 | }; | |
269 | ||
37d5e202 | 270 | #define LTTNG_UST_ENUM_TYPE_PADDING 24 |
c785c634 | 271 | struct lttng_enum_desc { |
8020ceb5 | 272 | const char *name; |
8020ceb5 | 273 | const struct lttng_enum_entry *entries; |
c785c634 | 274 | unsigned int nr_entries; |
37d5e202 | 275 | char padding[LTTNG_UST_ENUM_TYPE_PADDING]; |
8020ceb5 MD |
276 | }; |
277 | ||
180901e6 MD |
278 | /* |
279 | * Event field description | |
280 | * | |
281 | * IMPORTANT: this structure is part of the ABI between the probe and | |
282 | * UST. Fields need to be only added at the end, never reordered, never | |
283 | * removed. | |
284 | */ | |
8020ceb5 | 285 | |
4774c8f3 | 286 | #define LTTNG_UST_EVENT_FIELD_PADDING 28 |
8020ceb5 MD |
287 | struct lttng_event_field { |
288 | const char *name; | |
289 | struct lttng_type type; | |
180901e6 | 290 | unsigned int nowrite; /* do not write into trace */ |
218deb69 MD |
291 | union { |
292 | struct { | |
293 | unsigned int nofilter:1; /* do not consider for filter */ | |
294 | } ext; | |
295 | char padding[LTTNG_UST_EVENT_FIELD_PADDING]; | |
296 | } u; | |
8020ceb5 MD |
297 | }; |
298 | ||
53569322 MD |
299 | enum lttng_ust_dynamic_type { |
300 | LTTNG_UST_DYNAMIC_TYPE_NONE, | |
301 | LTTNG_UST_DYNAMIC_TYPE_S8, | |
302 | LTTNG_UST_DYNAMIC_TYPE_S16, | |
303 | LTTNG_UST_DYNAMIC_TYPE_S32, | |
304 | LTTNG_UST_DYNAMIC_TYPE_S64, | |
305 | LTTNG_UST_DYNAMIC_TYPE_U8, | |
306 | LTTNG_UST_DYNAMIC_TYPE_U16, | |
307 | LTTNG_UST_DYNAMIC_TYPE_U32, | |
308 | LTTNG_UST_DYNAMIC_TYPE_U64, | |
309 | LTTNG_UST_DYNAMIC_TYPE_FLOAT, | |
310 | LTTNG_UST_DYNAMIC_TYPE_DOUBLE, | |
311 | LTTNG_UST_DYNAMIC_TYPE_STRING, | |
312 | _NR_LTTNG_UST_DYNAMIC_TYPES, | |
313 | }; | |
314 | ||
315 | struct lttng_ctx_value { | |
316 | enum lttng_ust_dynamic_type sel; | |
317 | union { | |
318 | int64_t s64; | |
86133caf | 319 | uint64_t u64; |
53569322 MD |
320 | const char *str; |
321 | double d; | |
322 | } u; | |
77aa5901 MD |
323 | }; |
324 | ||
d58d1454 MD |
325 | struct lttng_perf_counter_field; |
326 | ||
37d5e202 | 327 | #define LTTNG_UST_CTX_FIELD_PADDING 40 |
8020ceb5 MD |
328 | struct lttng_ctx_field { |
329 | struct lttng_event_field event_field; | |
53569322 | 330 | size_t (*get_size)(struct lttng_ctx_field *field, size_t offset); |
8020ceb5 | 331 | void (*record)(struct lttng_ctx_field *field, |
4cfec15c | 332 | struct lttng_ust_lib_ring_buffer_ctx *ctx, |
7dd08bec | 333 | struct lttng_channel *chan); |
77aa5901 | 334 | void (*get_value)(struct lttng_ctx_field *field, |
53569322 | 335 | struct lttng_ctx_value *value); |
8020ceb5 | 336 | union { |
d58d1454 | 337 | struct lttng_perf_counter_field *perf_counter; |
37d5e202 | 338 | char padding[LTTNG_UST_CTX_FIELD_PADDING]; |
8020ceb5 MD |
339 | } u; |
340 | void (*destroy)(struct lttng_ctx_field *field); | |
53569322 | 341 | char *field_name; /* Has ownership, dynamically allocated. */ |
8020ceb5 MD |
342 | }; |
343 | ||
b2cc986a | 344 | #define LTTNG_UST_CTX_PADDING 20 |
8020ceb5 MD |
345 | struct lttng_ctx { |
346 | struct lttng_ctx_field *fields; | |
347 | unsigned int nr_fields; | |
348 | unsigned int allocated_fields; | |
b2cc986a | 349 | unsigned int largest_align; |
37d5e202 MD |
350 | char padding[LTTNG_UST_CTX_PADDING]; |
351 | }; | |
352 | ||
353 | #define LTTNG_UST_EVENT_DESC_PADDING 40 | |
354 | struct lttng_event_desc { | |
355 | const char *name; | |
fbdeb5ec | 356 | void (*probe_callback)(void); |
37d5e202 MD |
357 | const struct lttng_event_ctx *ctx; /* context */ |
358 | const struct lttng_event_field *fields; /* event payload */ | |
359 | unsigned int nr_fields; | |
360 | const int **loglevel; | |
68755429 | 361 | const char *signature; /* Argument types/names received */ |
6ddc916d MD |
362 | union { |
363 | struct { | |
364 | const char **model_emf_uri; | |
d8d2416d | 365 | void (*event_notifier_callback)(void); |
6ddc916d MD |
366 | } ext; |
367 | char padding[LTTNG_UST_EVENT_DESC_PADDING]; | |
368 | } u; | |
37d5e202 MD |
369 | }; |
370 | ||
71d31690 | 371 | #define LTTNG_UST_PROBE_DESC_PADDING 12 |
37d5e202 MD |
372 | struct lttng_probe_desc { |
373 | const char *provider; | |
374 | const struct lttng_event_desc **event_desc; | |
375 | unsigned int nr_events; | |
376 | struct cds_list_head head; /* chain registered probes */ | |
6715d7d1 MD |
377 | struct cds_list_head lazy_init_head; |
378 | int lazy; /* lazy registration */ | |
71d31690 MD |
379 | uint32_t major; |
380 | uint32_t minor; | |
37d5e202 | 381 | char padding[LTTNG_UST_PROBE_DESC_PADDING]; |
8020ceb5 MD |
382 | }; |
383 | ||
37d5e202 MD |
384 | /* Data structures used by the tracer. */ |
385 | ||
e450e339 FD |
386 | enum lttng_enabler_format_type { |
387 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
388 | LTTNG_ENABLER_FORMAT_EVENT, | |
e6c12e3d MD |
389 | }; |
390 | ||
391 | /* | |
e58095ef MD |
392 | * Enabler field, within whatever object is enabling an event. Target of |
393 | * backward reference. | |
e6c12e3d | 394 | */ |
e58095ef | 395 | struct lttng_enabler { |
e450e339 | 396 | enum lttng_enabler_format_type format_type; |
e58095ef MD |
397 | |
398 | /* head list of struct lttng_ust_filter_bytecode_node */ | |
399 | struct cds_list_head filter_bytecode_head; | |
0f63324a JI |
400 | /* head list of struct lttng_ust_excluder_node */ |
401 | struct cds_list_head excluder_head; | |
e58095ef MD |
402 | |
403 | struct lttng_ust_event event_param; | |
e58095ef | 404 | unsigned int enabled:1; |
e6c12e3d MD |
405 | }; |
406 | ||
c8fcf224 MD |
407 | struct tp_list_entry { |
408 | struct lttng_ust_tracepoint_iter tp; | |
409 | struct cds_list_head head; | |
410 | }; | |
411 | ||
412 | struct lttng_ust_tracepoint_list { | |
413 | struct tp_list_entry *iter; | |
414 | struct cds_list_head head; | |
8020ceb5 MD |
415 | }; |
416 | ||
06d4f27e MD |
417 | struct tp_field_list_entry { |
418 | struct lttng_ust_field_iter field; | |
419 | struct cds_list_head head; | |
420 | }; | |
421 | ||
422 | struct lttng_ust_field_list { | |
423 | struct tp_field_list_entry *iter; | |
424 | struct cds_list_head head; | |
425 | }; | |
426 | ||
8165c8da | 427 | struct ust_pending_probe; |
7dd08bec | 428 | struct lttng_event; |
f488575f | 429 | |
8a92ed2a | 430 | /* |
04aa13f8 | 431 | * Bytecode interpreter return value masks. |
8a92ed2a | 432 | */ |
04aa13f8 FD |
433 | enum lttng_bytecode_interpreter_ret { |
434 | LTTNG_INTERPRETER_DISCARD = 0, | |
435 | LTTNG_INTERPRETER_RECORD_FLAG = (1ULL << 0), | |
8a92ed2a MD |
436 | /* Other bits are kept for future use. */ |
437 | }; | |
438 | ||
d37ecb3f FD |
439 | struct lttng_interpreter_output; |
440 | ||
73d37531 FD |
441 | /* |
442 | * This structure is used in the probes. More specifically, the `filter` and | |
443 | * `node` fields are explicity used in the probes. When modifying this | |
444 | * structure we must not change the layout of these two fields as it is | |
445 | * considered ABI. | |
446 | */ | |
f488575f MD |
447 | struct lttng_bytecode_runtime { |
448 | /* Associated bytecode */ | |
ab249ecf | 449 | struct lttng_ust_bytecode_node *bc; |
c42416df FD |
450 | union { |
451 | uint64_t (*filter)(void *interpreter_data, | |
452 | const char *interpreter_stack_data); | |
d37ecb3f FD |
453 | uint64_t (*capture)(void *interpreter_data, |
454 | const char *interpreter_stack_data, | |
455 | struct lttng_interpreter_output *interpreter_output); | |
c42416df | 456 | } interpreter_funcs; |
21af05a9 | 457 | int link_failed; |
e58095ef | 458 | struct cds_list_head node; /* list of bytecode runtime in event */ |
b77aaa1b | 459 | /* |
d8d2416d FD |
460 | * Pointer to a URCU-protected pointer owned by an `struct |
461 | * lttng_session`or `struct lttng_event_notifier_group`. | |
b77aaa1b FD |
462 | */ |
463 | struct lttng_ctx **pctx; | |
e58095ef MD |
464 | }; |
465 | ||
466 | /* | |
d8d2416d FD |
467 | * Objects in a linked-list of enablers, owned by an event or event_notifier. |
468 | * This is used because an event (or a event_notifier) can be enabled by more | |
469 | * than one enabler and we want a quick way to iterate over all enablers of an | |
470 | * object. | |
471 | * | |
472 | * For example, event rules "my_app:a*" and "my_app:ab*" will both match the | |
473 | * event with the name "my_app:abc". | |
e58095ef MD |
474 | */ |
475 | struct lttng_enabler_ref { | |
476 | struct cds_list_head node; /* enabler ref list */ | |
477 | struct lttng_enabler *ref; /* backward ref */ | |
f488575f | 478 | }; |
8165c8da | 479 | |
8020ceb5 | 480 | /* |
7dd08bec MD |
481 | * lttng_event structure is referred to by the tracing fast path. It |
482 | * must be kept small. | |
180901e6 MD |
483 | * |
484 | * IMPORTANT: this structure is part of the ABI between the probe and | |
485 | * UST. Fields need to be only added at the end, never reordered, never | |
486 | * removed. | |
8020ceb5 | 487 | */ |
7dd08bec | 488 | struct lttng_event { |
180901e6 | 489 | /* LTTng-UST 2.0 starts here */ |
8020ceb5 | 490 | unsigned int id; |
7dd08bec | 491 | struct lttng_channel *chan; |
976fe9ea | 492 | int enabled; |
8020ceb5 | 493 | const struct lttng_event_desc *desc; |
e58095ef | 494 | void *_deprecated1; |
8020ceb5 | 495 | struct lttng_ctx *ctx; |
9f3fdbc6 | 496 | enum lttng_ust_instrumentation instrumentation; |
e58095ef MD |
497 | struct cds_list_head node; /* Event list in session */ |
498 | struct cds_list_head _deprecated2; | |
499 | void *_deprecated3; | |
13b21cd6 | 500 | unsigned int _deprecated4:1; |
e58095ef | 501 | |
180901e6 | 502 | /* LTTng-UST 2.1 starts here */ |
e58095ef | 503 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ |
a56fd376 | 504 | struct cds_list_head filter_bytecode_runtime_head; |
dcdeaff0 | 505 | int has_enablers_without_bytecode; |
e58095ef MD |
506 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ |
507 | struct cds_list_head enablers_ref_head; | |
d56fa719 | 508 | struct cds_hlist_node hlist; /* session ht of events */ |
ac6b4ac6 | 509 | int registered; /* has reg'd tracepoint probe */ |
8020ceb5 MD |
510 | }; |
511 | ||
d8d2416d FD |
512 | struct lttng_event_notifier { |
513 | uint64_t user_token; | |
6566528b | 514 | uint64_t error_counter_index; |
d8d2416d FD |
515 | int enabled; |
516 | int registered; /* has reg'd tracepoint probe */ | |
d37ecb3f | 517 | size_t num_captures; /* Needed to allocate the msgpack array. */ |
d8d2416d | 518 | struct cds_list_head filter_bytecode_runtime_head; |
d37ecb3f | 519 | struct cds_list_head capture_bytecode_runtime_head; |
d8d2416d FD |
520 | int has_enablers_without_bytecode; |
521 | struct cds_list_head enablers_ref_head; | |
522 | const struct lttng_event_desc *desc; | |
523 | struct cds_hlist_node hlist; /* hashtable of event_notifiers */ | |
524 | struct cds_list_head node; /* event_notifier list in session */ | |
525 | struct lttng_event_notifier_group *group; /* weak ref */ | |
526 | }; | |
527 | ||
c785c634 MD |
528 | struct lttng_enum { |
529 | const struct lttng_enum_desc *desc; | |
530 | struct lttng_session *session; | |
531 | struct cds_list_head node; /* Enum list in session */ | |
532 | struct cds_hlist_node hlist; /* Session ht of enums */ | |
533 | uint64_t id; /* Enumeration ID in sessiond */ | |
534 | }; | |
535 | ||
8d8a24c8 | 536 | struct channel; |
38fae1d3 | 537 | struct lttng_ust_shm_handle; |
8d8a24c8 | 538 | |
180901e6 MD |
539 | /* |
540 | * IMPORTANT: this structure is part of the ABI between the probe and | |
541 | * UST. Fields need to be only added at the end, never reordered, never | |
542 | * removed. | |
543 | */ | |
7dd08bec MD |
544 | struct lttng_channel_ops { |
545 | struct lttng_channel *(*channel_create)(const char *name, | |
74d81a6c MD |
546 | void *buf_addr, |
547 | size_t subbuf_size, size_t num_subbuf, | |
548 | unsigned int switch_timer_interval, | |
549 | unsigned int read_timer_interval, | |
6ca18e66 | 550 | unsigned char *uuid, |
a9ff648c | 551 | uint32_t chan_id, |
b2c5f61a MD |
552 | const int *stream_fds, int nr_stream_fds, |
553 | int64_t blocking_timeout); | |
74d81a6c | 554 | void (*channel_destroy)(struct lttng_channel *chan); |
a44c74d9 MD |
555 | union { |
556 | void *_deprecated1; | |
f9ec4a97 MD |
557 | /* |
558 | * has_strcpy is needed by probe providers version 1.0 to | |
559 | * dynamically detect whether the LTTng-UST tracepoint | |
560 | * provider ABI implements event_strcpy. Starting from | |
561 | * probe providers version 2.0, the check is not needed, | |
562 | * but backward compatibility is provided for older versions. | |
563 | */ | |
a44c74d9 MD |
564 | unsigned long has_strcpy:1; /* ABI has strcpy */ |
565 | } u; | |
9e917229 | 566 | void *_deprecated2; |
4cfec15c | 567 | int (*event_reserve)(struct lttng_ust_lib_ring_buffer_ctx *ctx, |
8020ceb5 | 568 | uint32_t event_id); |
4cfec15c | 569 | void (*event_commit)(struct lttng_ust_lib_ring_buffer_ctx *ctx); |
74d81a6c MD |
570 | void (*event_write)(struct lttng_ust_lib_ring_buffer_ctx *ctx, |
571 | const void *src, size_t len); | |
8020ceb5 MD |
572 | /* |
573 | * packet_avail_size returns the available size in the current | |
574 | * packet. Note that the size returned is only a hint, since it | |
575 | * may change due to concurrent writes. | |
576 | */ | |
1d498196 | 577 | size_t (*packet_avail_size)(struct channel *chan, |
38fae1d3 | 578 | struct lttng_ust_shm_handle *handle); |
9f3fdbc6 MD |
579 | //wait_queue_head_t *(*get_reader_wait_queue)(struct channel *chan); |
580 | //wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); | |
8020ceb5 MD |
581 | int (*is_finalized)(struct channel *chan); |
582 | int (*is_disabled)(struct channel *chan); | |
38fae1d3 | 583 | int (*flush_buffer)(struct channel *chan, struct lttng_ust_shm_handle *handle); |
a44c74d9 MD |
584 | void (*event_strcpy)(struct lttng_ust_lib_ring_buffer_ctx *ctx, |
585 | const char *src, size_t len); | |
8020ceb5 MD |
586 | }; |
587 | ||
180901e6 MD |
588 | /* |
589 | * IMPORTANT: this structure is part of the ABI between the probe and | |
590 | * UST. Fields need to be only added at the end, never reordered, never | |
591 | * removed. | |
592 | */ | |
7dd08bec | 593 | struct lttng_channel { |
a3f61e7f MD |
594 | /* |
595 | * The pointers located in this private data are NOT safe to be | |
596 | * dereferenced by the consumer. The only operations the | |
597 | * consumer process is designed to be allowed to do is to read | |
598 | * and perform subbuffer flush. | |
599 | */ | |
8020ceb5 | 600 | struct channel *chan; /* Channel buffers */ |
976fe9ea | 601 | int enabled; |
8020ceb5 MD |
602 | struct lttng_ctx *ctx; |
603 | /* Event ID management */ | |
7dd08bec | 604 | struct lttng_session *session; |
0a42beb6 | 605 | int objd; /* Object associated to channel */ |
32ce8569 MD |
606 | unsigned int _deprecated1; |
607 | unsigned int _deprecated2; | |
e58095ef | 608 | struct cds_list_head node; /* Channel list in session */ |
74d81a6c | 609 | const struct lttng_channel_ops *ops; |
8020ceb5 | 610 | int header_type; /* 0: unset, 1: compact, 2: large */ |
38fae1d3 | 611 | struct lttng_ust_shm_handle *handle; /* shared-memory handle */ |
13b21cd6 | 612 | unsigned int _deprecated3:1; |
a3f61e7f | 613 | |
74d81a6c | 614 | /* Channel ID */ |
a3f61e7f | 615 | unsigned int id; |
74d81a6c | 616 | enum lttng_ust_chan_type type; |
19d8b1b3 | 617 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ |
ac6b4ac6 | 618 | int tstate:1; /* Transient enable state */ |
8020ceb5 MD |
619 | }; |
620 | ||
ebabbf58 MD |
621 | #define LTTNG_COUNTER_DIMENSION_MAX 8 |
622 | ||
623 | struct lttng_counter_dimension { | |
624 | uint64_t size; | |
625 | uint64_t underflow_index; | |
626 | uint64_t overflow_index; | |
627 | uint8_t has_underflow; | |
628 | uint8_t has_overflow; | |
629 | }; | |
630 | ||
631 | struct lttng_counter_ops { | |
632 | struct lib_counter *(*counter_create)(size_t nr_dimensions, | |
633 | const struct lttng_counter_dimension *dimensions, | |
634 | int64_t global_sum_step, | |
635 | int global_counter_fd, | |
636 | int nr_counter_cpu_fds, | |
637 | const int *counter_cpu_fds, | |
638 | bool is_daemon); | |
639 | void (*counter_destroy)(struct lib_counter *counter); | |
640 | int (*counter_add)(struct lib_counter *counter, | |
641 | const size_t *dimension_indexes, int64_t v); | |
642 | int (*counter_read)(struct lib_counter *counter, | |
643 | const size_t *dimension_indexes, int cpu, | |
644 | int64_t *value, bool *overflow, bool *underflow); | |
645 | int (*counter_aggregate)(struct lib_counter *counter, | |
646 | const size_t *dimension_indexes, int64_t *value, | |
647 | bool *overflow, bool *underflow); | |
648 | int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); | |
649 | }; | |
650 | ||
53569322 MD |
651 | #define LTTNG_UST_STACK_CTX_PADDING 32 |
652 | struct lttng_stack_ctx { | |
653 | struct lttng_event *event; | |
654 | struct lttng_ctx *chan_ctx; /* RCU dereferenced. */ | |
655 | struct lttng_ctx *event_ctx; /* RCU dereferenced. */ | |
656 | char padding[LTTNG_UST_STACK_CTX_PADDING]; | |
657 | }; | |
658 | ||
71a9d034 | 659 | #define LTTNG_UST_EVENT_HT_BITS 12 |
e58095ef MD |
660 | #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS) |
661 | ||
662 | struct lttng_ust_event_ht { | |
663 | struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE]; | |
664 | }; | |
665 | ||
d8d2416d FD |
666 | #define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12 |
667 | #define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS) | |
668 | struct lttng_ust_event_notifier_ht { | |
669 | struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE]; | |
670 | }; | |
671 | ||
c785c634 MD |
672 | #define LTTNG_UST_ENUM_HT_BITS 12 |
673 | #define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS) | |
674 | ||
675 | struct lttng_ust_enum_ht { | |
676 | struct cds_hlist_head table[LTTNG_UST_ENUM_HT_SIZE]; | |
677 | }; | |
678 | ||
180901e6 MD |
679 | /* |
680 | * IMPORTANT: this structure is part of the ABI between the probe and | |
681 | * UST. Fields need to be only added at the end, never reordered, never | |
682 | * removed. | |
683 | */ | |
7dd08bec | 684 | struct lttng_session { |
e58095ef MD |
685 | int active; /* Is trace session active ? */ |
686 | int been_active; /* Been active ? */ | |
687 | int objd; /* Object associated */ | |
13b21cd6 | 688 | void *_deprecated1; |
e58095ef MD |
689 | struct cds_list_head chan_head; /* Channel list head */ |
690 | struct cds_list_head events_head; /* list of events */ | |
13b21cd6 | 691 | struct cds_list_head _deprecated2; |
e58095ef | 692 | struct cds_list_head node; /* Session list */ |
13b21cd6 MD |
693 | int _deprecated3; |
694 | unsigned int _deprecated4:1; | |
e58095ef MD |
695 | |
696 | /* New UST 2.1 */ | |
697 | /* List of enablers */ | |
698 | struct cds_list_head enablers_head; | |
d56fa719 | 699 | struct lttng_ust_event_ht events_ht; /* ht of events */ |
32ce8569 | 700 | void *owner; /* object owner */ |
ac6b4ac6 | 701 | int tstate:1; /* Transient enable state */ |
246be17e PW |
702 | |
703 | /* New UST 2.4 */ | |
704 | int statedump_pending:1; | |
c785c634 MD |
705 | |
706 | /* New UST 2.8 */ | |
707 | struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */ | |
708 | struct cds_list_head enums_head; | |
53569322 | 709 | struct lttng_ctx *ctx; /* contexts for filters. */ |
8020ceb5 MD |
710 | }; |
711 | ||
ebabbf58 MD |
712 | struct lttng_counter { |
713 | int objd; | |
714 | struct lttng_event_notifier_group *event_notifier_group; /* owner */ | |
715 | struct lttng_counter_transport *transport; | |
716 | struct lib_counter *counter; | |
717 | struct lttng_counter_ops *ops; | |
718 | }; | |
719 | ||
d8d2416d FD |
720 | struct lttng_event_notifier_group { |
721 | int objd; | |
722 | void *owner; | |
723 | int notification_fd; | |
724 | struct cds_list_head node; /* Event notifier group handle list */ | |
725 | struct cds_list_head enablers_head; | |
726 | struct cds_list_head event_notifiers_head; /* list of event_notifiers */ | |
727 | struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */ | |
728 | struct lttng_ctx *ctx; /* contexts for filters. */ | |
ebabbf58 MD |
729 | |
730 | struct lttng_counter *error_counter; | |
731 | size_t error_counter_len; | |
d8d2416d FD |
732 | }; |
733 | ||
7dd08bec | 734 | struct lttng_transport { |
8020ceb5 | 735 | char *name; |
9f3fdbc6 | 736 | struct cds_list_head node; |
7dd08bec | 737 | struct lttng_channel_ops ops; |
74d81a6c | 738 | const struct lttng_ust_lib_ring_buffer_config *client_config; |
8020ceb5 MD |
739 | }; |
740 | ||
ebabbf58 MD |
741 | struct lttng_counter_transport { |
742 | char *name; | |
743 | struct cds_list_head node; | |
744 | struct lttng_counter_ops ops; | |
745 | const struct lib_counter_config *client_config; | |
746 | }; | |
747 | ||
7dd08bec MD |
748 | struct lttng_session *lttng_session_create(void); |
749 | int lttng_session_enable(struct lttng_session *session); | |
750 | int lttng_session_disable(struct lttng_session *session); | |
710b8ee3 | 751 | int lttng_session_statedump(struct lttng_session *session); |
7dd08bec | 752 | void lttng_session_destroy(struct lttng_session *session); |
8020ceb5 | 753 | |
d8d2416d | 754 | void lttng_event_notifier_notification_send( |
d37ecb3f FD |
755 | struct lttng_event_notifier *event_notifier, |
756 | const char *stack_data); | |
d8d2416d | 757 | |
7dd08bec | 758 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
8020ceb5 MD |
759 | const char *transport_name, |
760 | void *buf_addr, | |
761 | size_t subbuf_size, size_t num_subbuf, | |
762 | unsigned int switch_timer_interval, | |
193183fb | 763 | unsigned int read_timer_interval, |
ef9ff354 MD |
764 | int **shm_fd, int **wait_fd, |
765 | uint64_t **memory_map_size, | |
7dd08bec | 766 | struct lttng_channel *chan_priv_init); |
8020ceb5 | 767 | |
7dd08bec MD |
768 | int lttng_channel_enable(struct lttng_channel *channel); |
769 | int lttng_channel_disable(struct lttng_channel *channel); | |
e58095ef | 770 | |
e58095ef | 771 | int lttng_attach_context(struct lttng_ust_context *context_param, |
8e696cfa | 772 | union ust_args *uargs, |
e58095ef | 773 | struct lttng_ctx **ctx, struct lttng_session *session); |
7dd08bec MD |
774 | void lttng_transport_register(struct lttng_transport *transport); |
775 | void lttng_transport_unregister(struct lttng_transport *transport); | |
8020ceb5 | 776 | |
ebabbf58 MD |
777 | void lttng_counter_transport_register(struct lttng_counter_transport *transport); |
778 | void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); | |
779 | ||
780 | struct lttng_counter *lttng_ust_counter_create( | |
781 | const char *counter_transport_name, | |
782 | size_t number_dimensions, const struct lttng_counter_dimension *dimensions); | |
783 | ||
7dd08bec MD |
784 | int lttng_probe_register(struct lttng_probe_desc *desc); |
785 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
35ac38cb | 786 | void lttng_probe_provider_unregister_events(struct lttng_probe_desc *desc); |
5f733922 | 787 | int lttng_fix_pending_events(void); |
7dd08bec MD |
788 | int lttng_probes_init(void); |
789 | void lttng_probes_exit(void); | |
8173ec7c | 790 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
77aa5901 | 791 | int lttng_get_context_index(struct lttng_ctx *ctx, const char *name); |
8173ec7c | 792 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p); |
b2cc986a | 793 | void lttng_context_update(struct lttng_ctx *ctx); |
8173ec7c | 794 | void lttng_remove_context_field(struct lttng_ctx **ctx_p, |
8020ceb5 MD |
795 | struct lttng_ctx_field *field); |
796 | void lttng_destroy_context(struct lttng_ctx *ctx); | |
3b402b40 | 797 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); |
c1ef86f0 | 798 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
8173ec7c | 799 | int lttng_add_pthread_id_to_ctx(struct lttng_ctx **ctx); |
4847e9bb | 800 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
96f85541 | 801 | int lttng_add_ip_to_ctx(struct lttng_ctx **ctx); |
c7ea8487 | 802 | int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx); |
53569322 | 803 | int lttng_add_dyntest_to_ctx(struct lttng_ctx **ctx); |
735bef47 MJ |
804 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx); |
805 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx); | |
806 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx); | |
807 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx); | |
808 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx); | |
cefef7a7 | 809 | int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx); |
735bef47 MJ |
810 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx); |
811 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx); | |
fca2f191 MJ |
812 | int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx); |
813 | int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx); | |
814 | int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx); | |
815 | int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx); | |
816 | int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx); | |
817 | int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx); | |
a93bfc45 | 818 | void lttng_context_vtid_reset(void); |
c1ef86f0 | 819 | void lttng_context_vpid_reset(void); |
46228a6f | 820 | void lttng_context_procname_reset(void); |
735bef47 MJ |
821 | void lttng_context_cgroup_ns_reset(void); |
822 | void lttng_context_ipc_ns_reset(void); | |
823 | void lttng_context_mnt_ns_reset(void); | |
824 | void lttng_context_net_ns_reset(void); | |
825 | void lttng_context_pid_ns_reset(void); | |
cefef7a7 | 826 | void lttng_context_time_ns_reset(void); |
735bef47 MJ |
827 | void lttng_context_user_ns_reset(void); |
828 | void lttng_context_uts_ns_reset(void); | |
fca2f191 MJ |
829 | void lttng_context_vuid_reset(void); |
830 | void lttng_context_veuid_reset(void); | |
831 | void lttng_context_vsuid_reset(void); | |
832 | void lttng_context_vgid_reset(void); | |
833 | void lttng_context_vegid_reset(void); | |
834 | void lttng_context_vsgid_reset(void); | |
9f3fdbc6 | 835 | |
d58d1454 MD |
836 | #ifdef LTTNG_UST_HAVE_PERF_EVENT |
837 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
838 | uint64_t config, | |
839 | const char *name, | |
840 | struct lttng_ctx **ctx); | |
841 | int lttng_perf_counter_init(void); | |
842 | void lttng_perf_counter_exit(void); | |
843 | #else /* #ifdef LTTNG_UST_HAVE_PERF_EVENT */ | |
844 | static inline | |
845 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
846 | uint64_t config, | |
847 | const char *name, | |
848 | struct lttng_ctx **ctx) | |
849 | { | |
850 | return -ENOSYS; | |
851 | } | |
852 | static inline | |
853 | int lttng_perf_counter_init(void) | |
854 | { | |
855 | return 0; | |
856 | } | |
857 | static inline | |
858 | void lttng_perf_counter_exit(void) | |
859 | { | |
860 | } | |
861 | #endif /* #else #ifdef LTTNG_UST_HAVE_PERF_EVENT */ | |
862 | ||
82b9bde8 JD |
863 | extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_metadata; |
864 | extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_discard; | |
865 | extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_overwrite; | |
c1fca457 | 866 | |
7dd08bec | 867 | struct lttng_transport *lttng_transport_find(const char *name); |
ebabbf58 | 868 | struct lttng_counter_transport *lttng_counter_transport_find(const char *name); |
c1fca457 | 869 | |
7dd08bec MD |
870 | int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list); |
871 | void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list); | |
c8fcf224 MD |
872 | struct lttng_ust_tracepoint_iter * |
873 | lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list); | |
7dd08bec MD |
874 | int lttng_probes_get_field_list(struct lttng_ust_field_list *list); |
875 | void lttng_probes_prune_field_list(struct lttng_ust_field_list *list); | |
06d4f27e MD |
876 | struct lttng_ust_field_iter * |
877 | lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list); | |
c8fcf224 | 878 | |
7dd08bec | 879 | void lttng_free_event_filter_runtime(struct lttng_event *event); |
e58095ef MD |
880 | |
881 | struct cds_list_head *lttng_get_probe_list_head(void); | |
6715d7d1 | 882 | int lttng_session_active(void); |
e6c12e3d | 883 | |
246be17e | 884 | typedef int (*t_statedump_func_ptr)(struct lttng_session *session); |
3327ac33 | 885 | void lttng_handle_pending_statedump(void *owner); |
37dddb65 | 886 | struct cds_list_head *_lttng_get_sessions(void); |
b33b46f7 FD |
887 | |
888 | struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_session *session, | |
889 | const struct lttng_enum_desc *enum_desc); | |
246be17e | 890 | |
97c7c238 | 891 | void lttng_ust_dl_update(void *ip); |
6548fca4 | 892 | void lttng_ust_fixup_fd_tracker_tls(void); |
97c7c238 | 893 | |
4a1f7569 MD |
894 | /* For backward compatibility. Leave those exported symbols in place. */ |
895 | extern struct lttng_ctx *lttng_static_ctx; | |
92495593 FD |
896 | struct lttng_ust_filter_bytecode_node; |
897 | struct lttng_ust_excluder_node; | |
4a1f7569 MD |
898 | void lttng_context_init(void); |
899 | void lttng_context_exit(void); | |
a211b293 | 900 | void lttng_filter_event_link_bytecode(struct lttng_event *event); |
d871c65b FD |
901 | struct lttng_enabler *lttng_enabler_create( |
902 | enum lttng_enabler_format_type format_type, | |
903 | struct lttng_ust_event *event_param, | |
904 | struct lttng_channel *chan); | |
905 | int lttng_enabler_enable(struct lttng_enabler *enabler); | |
906 | int lttng_enabler_disable(struct lttng_enabler *enabler); | |
907 | int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler, | |
908 | struct lttng_ust_filter_bytecode_node *bytecode); | |
909 | int lttng_enabler_attach_context(struct lttng_enabler *enabler, | |
910 | struct lttng_ust_context *ctx); | |
911 | int lttng_enabler_attach_exclusion(struct lttng_enabler *enabler, | |
912 | struct lttng_ust_excluder_node *excluder); | |
913 | void lttng_enabler_event_link_bytecode(struct lttng_event *event, | |
914 | struct lttng_enabler *enabler); | |
4d451c15 | 915 | void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime); |
51f804ec FD |
916 | int lttng_session_context_init(struct lttng_ctx **ctx); |
917 | ||
4a1f7569 | 918 | |
6453d237 MD |
919 | #ifdef __cplusplus |
920 | } | |
921 | #endif | |
922 | ||
51489cad | 923 | #endif /* _LTTNG_UST_EVENTS_H */ |