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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> |
9f3fdbc6 | 32 | #include <stdint.h> |
4318ae1b MD |
33 | #include <lttng/ust-abi.h> |
34 | #include <lttng/ust-tracer.h> | |
2ae57758 | 35 | #include <lttng/ust-endian.h> |
20f1eee7 | 36 | #include <float.h> |
8020ceb5 | 37 | |
19d8b1b3 MD |
38 | #define LTTNG_UST_UUID_LEN 16 |
39 | ||
7dd08bec MD |
40 | struct lttng_channel; |
41 | struct lttng_session; | |
4cfec15c | 42 | struct lttng_ust_lib_ring_buffer_ctx; |
8020ceb5 | 43 | |
37d5e202 MD |
44 | /* |
45 | * Data structures used by tracepoint event declarations, and by the | |
46 | * tracer. Those structures have padding for future extension. | |
47 | */ | |
48 | ||
c1fca457 MD |
49 | /* |
50 | * LTTng client type enumeration. Used by the consumer to map the | |
51 | * callbacks from its own address space. | |
52 | */ | |
53 | enum lttng_client_types { | |
54 | LTTNG_CLIENT_METADATA = 0, | |
55 | LTTNG_CLIENT_DISCARD = 1, | |
56 | LTTNG_CLIENT_OVERWRITE = 2, | |
57 | LTTNG_NR_CLIENT_TYPES, | |
58 | }; | |
59 | ||
8020ceb5 MD |
60 | /* Type description */ |
61 | ||
62 | /* Update the astract_types name table in lttng-types.c along with this enum */ | |
7dd08bec | 63 | enum lttng_abstract_types { |
8020ceb5 MD |
64 | atype_integer, |
65 | atype_enum, | |
66 | atype_array, | |
67 | atype_sequence, | |
68 | atype_string, | |
20f1eee7 | 69 | atype_float, |
8020ceb5 MD |
70 | NR_ABSTRACT_TYPES, |
71 | }; | |
72 | ||
73 | /* Update the string_encodings name table in lttng-types.c along with this enum */ | |
74 | enum lttng_string_encodings { | |
75 | lttng_encode_none = 0, | |
76 | lttng_encode_UTF8 = 1, | |
77 | lttng_encode_ASCII = 2, | |
78 | NR_STRING_ENCODINGS, | |
79 | }; | |
80 | ||
37d5e202 | 81 | #define LTTNG_UST_ENUM_ENTRY_PADDING 16 |
8020ceb5 MD |
82 | struct lttng_enum_entry { |
83 | unsigned long long start, end; /* start and end are inclusive */ | |
84 | const char *string; | |
37d5e202 | 85 | char padding[LTTNG_UST_ENUM_ENTRY_PADDING]; |
8020ceb5 MD |
86 | }; |
87 | ||
88 | #define __type_integer(_type, _byte_order, _base, _encoding) \ | |
89 | { \ | |
90 | .atype = atype_integer, \ | |
91 | .u.basic.integer = \ | |
92 | { \ | |
93 | .size = sizeof(_type) * CHAR_BIT, \ | |
1dbfff0c MD |
94 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ |
95 | .signedness = lttng_is_signed_type(_type), \ | |
8d1d746f | 96 | .reverse_byte_order = _byte_order != BYTE_ORDER, \ |
8020ceb5 MD |
97 | .base = _base, \ |
98 | .encoding = lttng_encode_##_encoding, \ | |
99 | }, \ | |
100 | } \ | |
101 | ||
37d5e202 | 102 | #define LTTNG_UST_INTEGER_TYPE_PADDING 24 |
8020ceb5 MD |
103 | struct lttng_integer_type { |
104 | unsigned int size; /* in bits */ | |
105 | unsigned short alignment; /* in bits */ | |
106 | unsigned int signedness:1; | |
107 | unsigned int reverse_byte_order:1; | |
108 | unsigned int base; /* 2, 8, 10, 16, for pretty print */ | |
109 | enum lttng_string_encodings encoding; | |
37d5e202 | 110 | char padding[LTTNG_UST_INTEGER_TYPE_PADDING]; |
8020ceb5 MD |
111 | }; |
112 | ||
d3ed854b MD |
113 | /* |
114 | * Only float and double are supported. long double is not supported at | |
115 | * the moment. | |
116 | */ | |
20f1eee7 MD |
117 | #define _float_mant_dig(_type) \ |
118 | (sizeof(_type) == sizeof(float) ? FLT_MANT_DIG \ | |
119 | : (sizeof(_type) == sizeof(double) ? DBL_MANT_DIG \ | |
d3ed854b | 120 | : 0)) |
20f1eee7 MD |
121 | |
122 | #define __type_float(_type) \ | |
123 | { \ | |
124 | .atype = atype_float, \ | |
125 | .u.basic._float = \ | |
126 | { \ | |
127 | .exp_dig = sizeof(_type) * CHAR_BIT \ | |
128 | - _float_mant_dig(_type), \ | |
129 | .mant_dig = _float_mant_dig(_type), \ | |
1dbfff0c | 130 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ |
ad496c21 | 131 | .reverse_byte_order = BYTE_ORDER != FLOAT_WORD_ORDER, \ |
20f1eee7 MD |
132 | }, \ |
133 | } \ | |
134 | ||
37d5e202 | 135 | #define LTTNG_UST_FLOAT_TYPE_PADDING 24 |
20f1eee7 MD |
136 | struct lttng_float_type { |
137 | unsigned int exp_dig; /* exponent digits, in bits */ | |
138 | unsigned int mant_dig; /* mantissa digits, in bits */ | |
139 | unsigned short alignment; /* in bits */ | |
140 | unsigned int reverse_byte_order:1; | |
37d5e202 | 141 | char padding[LTTNG_UST_FLOAT_TYPE_PADDING]; |
20f1eee7 MD |
142 | }; |
143 | ||
37d5e202 | 144 | #define LTTNG_UST_BASIC_TYPE_PADDING 128 |
8020ceb5 MD |
145 | union _lttng_basic_type { |
146 | struct lttng_integer_type integer; | |
147 | struct { | |
148 | const char *name; | |
149 | } enumeration; | |
150 | struct { | |
151 | enum lttng_string_encodings encoding; | |
152 | } string; | |
20f1eee7 | 153 | struct lttng_float_type _float; |
37d5e202 | 154 | char padding[LTTNG_UST_BASIC_TYPE_PADDING]; |
8020ceb5 MD |
155 | }; |
156 | ||
157 | struct lttng_basic_type { | |
7dd08bec | 158 | enum lttng_abstract_types atype; |
8020ceb5 MD |
159 | union { |
160 | union _lttng_basic_type basic; | |
161 | } u; | |
162 | }; | |
163 | ||
37d5e202 | 164 | #define LTTNG_UST_TYPE_PADDING 128 |
8020ceb5 | 165 | struct lttng_type { |
7dd08bec | 166 | enum lttng_abstract_types atype; |
8020ceb5 MD |
167 | union { |
168 | union _lttng_basic_type basic; | |
169 | struct { | |
170 | struct lttng_basic_type elem_type; | |
171 | unsigned int length; /* num. elems. */ | |
172 | } array; | |
173 | struct { | |
174 | struct lttng_basic_type length_type; | |
175 | struct lttng_basic_type elem_type; | |
176 | } sequence; | |
37d5e202 | 177 | char padding[LTTNG_UST_TYPE_PADDING]; |
8020ceb5 MD |
178 | } u; |
179 | }; | |
180 | ||
37d5e202 | 181 | #define LTTNG_UST_ENUM_TYPE_PADDING 24 |
8020ceb5 MD |
182 | struct lttng_enum { |
183 | const char *name; | |
184 | struct lttng_type container_type; | |
185 | const struct lttng_enum_entry *entries; | |
23c8854a | 186 | unsigned int len; |
37d5e202 | 187 | char padding[LTTNG_UST_ENUM_TYPE_PADDING]; |
8020ceb5 MD |
188 | }; |
189 | ||
180901e6 MD |
190 | /* |
191 | * Event field description | |
192 | * | |
193 | * IMPORTANT: this structure is part of the ABI between the probe and | |
194 | * UST. Fields need to be only added at the end, never reordered, never | |
195 | * removed. | |
196 | */ | |
8020ceb5 | 197 | |
4774c8f3 | 198 | #define LTTNG_UST_EVENT_FIELD_PADDING 28 |
8020ceb5 MD |
199 | struct lttng_event_field { |
200 | const char *name; | |
201 | struct lttng_type type; | |
180901e6 | 202 | unsigned int nowrite; /* do not write into trace */ |
37d5e202 | 203 | char padding[LTTNG_UST_EVENT_FIELD_PADDING]; |
8020ceb5 MD |
204 | }; |
205 | ||
37d5e202 | 206 | #define LTTNG_UST_CTX_FIELD_PADDING 40 |
8020ceb5 MD |
207 | struct lttng_ctx_field { |
208 | struct lttng_event_field event_field; | |
209 | size_t (*get_size)(size_t offset); | |
210 | void (*record)(struct lttng_ctx_field *field, | |
4cfec15c | 211 | struct lttng_ust_lib_ring_buffer_ctx *ctx, |
7dd08bec | 212 | struct lttng_channel *chan); |
8020ceb5 | 213 | union { |
37d5e202 | 214 | char padding[LTTNG_UST_CTX_FIELD_PADDING]; |
8020ceb5 MD |
215 | } u; |
216 | void (*destroy)(struct lttng_ctx_field *field); | |
217 | }; | |
218 | ||
37d5e202 | 219 | #define LTTNG_UST_CTX_PADDING 24 |
8020ceb5 MD |
220 | struct lttng_ctx { |
221 | struct lttng_ctx_field *fields; | |
222 | unsigned int nr_fields; | |
223 | unsigned int allocated_fields; | |
37d5e202 MD |
224 | char padding[LTTNG_UST_CTX_PADDING]; |
225 | }; | |
226 | ||
227 | #define LTTNG_UST_EVENT_DESC_PADDING 40 | |
228 | struct lttng_event_desc { | |
229 | const char *name; | |
fbdeb5ec | 230 | void (*probe_callback)(void); |
37d5e202 MD |
231 | const struct lttng_event_ctx *ctx; /* context */ |
232 | const struct lttng_event_field *fields; /* event payload */ | |
233 | unsigned int nr_fields; | |
234 | const int **loglevel; | |
68755429 | 235 | const char *signature; /* Argument types/names received */ |
6ddc916d MD |
236 | union { |
237 | struct { | |
238 | const char **model_emf_uri; | |
239 | } ext; | |
240 | char padding[LTTNG_UST_EVENT_DESC_PADDING]; | |
241 | } u; | |
37d5e202 MD |
242 | }; |
243 | ||
6715d7d1 | 244 | #define LTTNG_UST_PROBE_DESC_PADDING 20 |
37d5e202 MD |
245 | struct lttng_probe_desc { |
246 | const char *provider; | |
247 | const struct lttng_event_desc **event_desc; | |
248 | unsigned int nr_events; | |
249 | struct cds_list_head head; /* chain registered probes */ | |
6715d7d1 MD |
250 | struct cds_list_head lazy_init_head; |
251 | int lazy; /* lazy registration */ | |
37d5e202 | 252 | char padding[LTTNG_UST_PROBE_DESC_PADDING]; |
8020ceb5 MD |
253 | }; |
254 | ||
37d5e202 MD |
255 | /* Data structures used by the tracer. */ |
256 | ||
e58095ef MD |
257 | enum lttng_enabler_type { |
258 | LTTNG_ENABLER_WILDCARD, | |
259 | LTTNG_ENABLER_EVENT, | |
e6c12e3d MD |
260 | }; |
261 | ||
262 | /* | |
e58095ef MD |
263 | * Enabler field, within whatever object is enabling an event. Target of |
264 | * backward reference. | |
e6c12e3d | 265 | */ |
e58095ef MD |
266 | struct lttng_enabler { |
267 | enum lttng_enabler_type type; | |
268 | ||
269 | /* head list of struct lttng_ust_filter_bytecode_node */ | |
270 | struct cds_list_head filter_bytecode_head; | |
271 | struct cds_list_head node; /* per-session list of enablers */ | |
272 | ||
273 | struct lttng_ust_event event_param; | |
274 | struct lttng_channel *chan; | |
275 | struct lttng_ctx *ctx; | |
276 | unsigned int enabled:1; | |
e6c12e3d MD |
277 | }; |
278 | ||
c8fcf224 MD |
279 | struct tp_list_entry { |
280 | struct lttng_ust_tracepoint_iter tp; | |
281 | struct cds_list_head head; | |
282 | }; | |
283 | ||
284 | struct lttng_ust_tracepoint_list { | |
285 | struct tp_list_entry *iter; | |
286 | struct cds_list_head head; | |
8020ceb5 MD |
287 | }; |
288 | ||
06d4f27e MD |
289 | struct tp_field_list_entry { |
290 | struct lttng_ust_field_iter field; | |
291 | struct cds_list_head head; | |
292 | }; | |
293 | ||
294 | struct lttng_ust_field_list { | |
295 | struct tp_field_list_entry *iter; | |
296 | struct cds_list_head head; | |
297 | }; | |
298 | ||
8165c8da | 299 | struct ust_pending_probe; |
7dd08bec | 300 | struct lttng_event; |
f488575f MD |
301 | |
302 | struct lttng_ust_filter_bytecode_node { | |
303 | struct cds_list_head node; | |
e58095ef | 304 | struct lttng_enabler *enabler; |
a543151c MD |
305 | /* |
306 | * struct lttng_ust_filter_bytecode has var. sized array, must | |
307 | * be last field. | |
308 | */ | |
309 | struct lttng_ust_filter_bytecode bc; | |
f488575f MD |
310 | }; |
311 | ||
8a92ed2a MD |
312 | /* |
313 | * Filter return value masks. | |
314 | */ | |
315 | enum lttng_filter_ret { | |
316 | LTTNG_FILTER_DISCARD = 0, | |
317 | LTTNG_FILTER_RECORD_FLAG = (1ULL << 0), | |
318 | /* Other bits are kept for future use. */ | |
319 | }; | |
320 | ||
f488575f MD |
321 | struct lttng_bytecode_runtime { |
322 | /* Associated bytecode */ | |
323 | struct lttng_ust_filter_bytecode_node *bc; | |
8a92ed2a | 324 | uint64_t (*filter)(void *filter_data, const char *filter_stack_data); |
21af05a9 | 325 | int link_failed; |
e58095ef MD |
326 | struct cds_list_head node; /* list of bytecode runtime in event */ |
327 | }; | |
328 | ||
329 | /* | |
330 | * Objects in a linked-list of enablers, owned by an event. | |
331 | */ | |
332 | struct lttng_enabler_ref { | |
333 | struct cds_list_head node; /* enabler ref list */ | |
334 | struct lttng_enabler *ref; /* backward ref */ | |
f488575f | 335 | }; |
8165c8da | 336 | |
8020ceb5 | 337 | /* |
7dd08bec MD |
338 | * lttng_event structure is referred to by the tracing fast path. It |
339 | * must be kept small. | |
180901e6 MD |
340 | * |
341 | * IMPORTANT: this structure is part of the ABI between the probe and | |
342 | * UST. Fields need to be only added at the end, never reordered, never | |
343 | * removed. | |
8020ceb5 | 344 | */ |
7dd08bec | 345 | struct lttng_event { |
180901e6 | 346 | /* LTTng-UST 2.0 starts here */ |
8020ceb5 | 347 | unsigned int id; |
7dd08bec | 348 | struct lttng_channel *chan; |
976fe9ea | 349 | int enabled; |
8020ceb5 | 350 | const struct lttng_event_desc *desc; |
e58095ef | 351 | void *_deprecated1; |
8020ceb5 | 352 | struct lttng_ctx *ctx; |
9f3fdbc6 | 353 | enum lttng_ust_instrumentation instrumentation; |
8020ceb5 | 354 | union { |
8020ceb5 | 355 | } u; |
e58095ef MD |
356 | struct cds_list_head node; /* Event list in session */ |
357 | struct cds_list_head _deprecated2; | |
358 | void *_deprecated3; | |
13b21cd6 | 359 | unsigned int _deprecated4:1; |
e58095ef | 360 | |
180901e6 | 361 | /* LTTng-UST 2.1 starts here */ |
e58095ef MD |
362 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ |
363 | struct cds_list_head bytecode_runtime_head; | |
dcdeaff0 | 364 | int has_enablers_without_bytecode; |
e58095ef MD |
365 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ |
366 | struct cds_list_head enablers_ref_head; | |
d56fa719 | 367 | struct cds_hlist_node hlist; /* session ht of events */ |
ac6b4ac6 | 368 | int registered; /* has reg'd tracepoint probe */ |
8020ceb5 MD |
369 | }; |
370 | ||
8d8a24c8 | 371 | struct channel; |
38fae1d3 | 372 | struct lttng_ust_shm_handle; |
8d8a24c8 | 373 | |
180901e6 MD |
374 | /* |
375 | * IMPORTANT: this structure is part of the ABI between the probe and | |
376 | * UST. Fields need to be only added at the end, never reordered, never | |
377 | * removed. | |
378 | */ | |
7dd08bec MD |
379 | struct lttng_channel_ops { |
380 | struct lttng_channel *(*channel_create)(const char *name, | |
74d81a6c MD |
381 | void *buf_addr, |
382 | size_t subbuf_size, size_t num_subbuf, | |
383 | unsigned int switch_timer_interval, | |
384 | unsigned int read_timer_interval, | |
385 | unsigned char *uuid); | |
386 | void (*channel_destroy)(struct lttng_channel *chan); | |
4cfec15c | 387 | int (*event_reserve)(struct lttng_ust_lib_ring_buffer_ctx *ctx, |
8020ceb5 | 388 | uint32_t event_id); |
4cfec15c | 389 | void (*event_commit)(struct lttng_ust_lib_ring_buffer_ctx *ctx); |
74d81a6c MD |
390 | void (*event_write)(struct lttng_ust_lib_ring_buffer_ctx *ctx, |
391 | const void *src, size_t len); | |
8020ceb5 MD |
392 | /* |
393 | * packet_avail_size returns the available size in the current | |
394 | * packet. Note that the size returned is only a hint, since it | |
395 | * may change due to concurrent writes. | |
396 | */ | |
1d498196 | 397 | size_t (*packet_avail_size)(struct channel *chan, |
38fae1d3 | 398 | struct lttng_ust_shm_handle *handle); |
9f3fdbc6 MD |
399 | //wait_queue_head_t *(*get_reader_wait_queue)(struct channel *chan); |
400 | //wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); | |
8020ceb5 MD |
401 | int (*is_finalized)(struct channel *chan); |
402 | int (*is_disabled)(struct channel *chan); | |
38fae1d3 | 403 | int (*flush_buffer)(struct channel *chan, struct lttng_ust_shm_handle *handle); |
8020ceb5 MD |
404 | }; |
405 | ||
180901e6 MD |
406 | /* |
407 | * IMPORTANT: this structure is part of the ABI between the probe and | |
408 | * UST. Fields need to be only added at the end, never reordered, never | |
409 | * removed. | |
410 | */ | |
7dd08bec | 411 | struct lttng_channel { |
a3f61e7f MD |
412 | /* |
413 | * The pointers located in this private data are NOT safe to be | |
414 | * dereferenced by the consumer. The only operations the | |
415 | * consumer process is designed to be allowed to do is to read | |
416 | * and perform subbuffer flush. | |
417 | */ | |
8020ceb5 | 418 | struct channel *chan; /* Channel buffers */ |
976fe9ea | 419 | int enabled; |
8020ceb5 MD |
420 | struct lttng_ctx *ctx; |
421 | /* Event ID management */ | |
7dd08bec | 422 | struct lttng_session *session; |
0a42beb6 | 423 | int objd; /* Object associated to channel */ |
32ce8569 MD |
424 | unsigned int _deprecated1; |
425 | unsigned int _deprecated2; | |
e58095ef | 426 | struct cds_list_head node; /* Channel list in session */ |
74d81a6c | 427 | const struct lttng_channel_ops *ops; |
8020ceb5 | 428 | int header_type; /* 0: unset, 1: compact, 2: large */ |
38fae1d3 | 429 | struct lttng_ust_shm_handle *handle; /* shared-memory handle */ |
13b21cd6 | 430 | unsigned int _deprecated3:1; |
a3f61e7f | 431 | |
74d81a6c | 432 | /* Channel ID */ |
a3f61e7f | 433 | unsigned int id; |
74d81a6c | 434 | enum lttng_ust_chan_type type; |
19d8b1b3 | 435 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ |
ac6b4ac6 | 436 | int tstate:1; /* Transient enable state */ |
8020ceb5 MD |
437 | }; |
438 | ||
71a9d034 | 439 | #define LTTNG_UST_EVENT_HT_BITS 12 |
e58095ef MD |
440 | #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS) |
441 | ||
442 | struct lttng_ust_event_ht { | |
443 | struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE]; | |
444 | }; | |
445 | ||
180901e6 MD |
446 | /* |
447 | * IMPORTANT: this structure is part of the ABI between the probe and | |
448 | * UST. Fields need to be only added at the end, never reordered, never | |
449 | * removed. | |
450 | */ | |
7dd08bec | 451 | struct lttng_session { |
e58095ef MD |
452 | int active; /* Is trace session active ? */ |
453 | int been_active; /* Been active ? */ | |
454 | int objd; /* Object associated */ | |
13b21cd6 | 455 | void *_deprecated1; |
e58095ef MD |
456 | struct cds_list_head chan_head; /* Channel list head */ |
457 | struct cds_list_head events_head; /* list of events */ | |
13b21cd6 | 458 | struct cds_list_head _deprecated2; |
e58095ef | 459 | struct cds_list_head node; /* Session list */ |
13b21cd6 MD |
460 | int _deprecated3; |
461 | unsigned int _deprecated4:1; | |
e58095ef MD |
462 | |
463 | /* New UST 2.1 */ | |
464 | /* List of enablers */ | |
465 | struct cds_list_head enablers_head; | |
d56fa719 | 466 | struct lttng_ust_event_ht events_ht; /* ht of events */ |
32ce8569 | 467 | void *owner; /* object owner */ |
ac6b4ac6 | 468 | int tstate:1; /* Transient enable state */ |
8020ceb5 MD |
469 | }; |
470 | ||
7dd08bec | 471 | struct lttng_transport { |
8020ceb5 | 472 | char *name; |
9f3fdbc6 | 473 | struct cds_list_head node; |
7dd08bec | 474 | struct lttng_channel_ops ops; |
74d81a6c | 475 | const struct lttng_ust_lib_ring_buffer_config *client_config; |
8020ceb5 MD |
476 | }; |
477 | ||
7dd08bec MD |
478 | struct lttng_session *lttng_session_create(void); |
479 | int lttng_session_enable(struct lttng_session *session); | |
480 | int lttng_session_disable(struct lttng_session *session); | |
481 | void lttng_session_destroy(struct lttng_session *session); | |
8020ceb5 | 482 | |
7dd08bec | 483 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
8020ceb5 MD |
484 | const char *transport_name, |
485 | void *buf_addr, | |
486 | size_t subbuf_size, size_t num_subbuf, | |
487 | unsigned int switch_timer_interval, | |
193183fb | 488 | unsigned int read_timer_interval, |
ef9ff354 MD |
489 | int **shm_fd, int **wait_fd, |
490 | uint64_t **memory_map_size, | |
7dd08bec | 491 | struct lttng_channel *chan_priv_init); |
8020ceb5 | 492 | |
7dd08bec MD |
493 | int lttng_channel_enable(struct lttng_channel *channel); |
494 | int lttng_channel_disable(struct lttng_channel *channel); | |
e58095ef MD |
495 | |
496 | struct lttng_enabler *lttng_enabler_create(enum lttng_enabler_type type, | |
497 | struct lttng_ust_event *event_param, | |
498 | struct lttng_channel *chan); | |
499 | int lttng_enabler_enable(struct lttng_enabler *enabler); | |
500 | int lttng_enabler_disable(struct lttng_enabler *enabler); | |
501 | int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler, | |
502 | struct lttng_ust_filter_bytecode_node *bytecode); | |
503 | int lttng_enabler_attach_context(struct lttng_enabler *enabler, | |
504 | struct lttng_ust_context *ctx); | |
505 | ||
506 | int lttng_attach_context(struct lttng_ust_context *context_param, | |
507 | struct lttng_ctx **ctx, struct lttng_session *session); | |
976fe9ea | 508 | |
7dd08bec MD |
509 | void lttng_transport_register(struct lttng_transport *transport); |
510 | void lttng_transport_unregister(struct lttng_transport *transport); | |
8020ceb5 | 511 | |
4b4de73e | 512 | void synchronize_trace(void); |
8020ceb5 | 513 | |
7dd08bec MD |
514 | int lttng_probe_register(struct lttng_probe_desc *desc); |
515 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
e58095ef | 516 | int lttng_fix_pending_event_desc(const struct lttng_event_desc *desc); |
7dd08bec MD |
517 | int lttng_probes_init(void); |
518 | void lttng_probes_exit(void); | |
8173ec7c MD |
519 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
520 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p); | |
521 | void lttng_remove_context_field(struct lttng_ctx **ctx_p, | |
8020ceb5 MD |
522 | struct lttng_ctx_field *field); |
523 | void lttng_destroy_context(struct lttng_ctx *ctx); | |
3b402b40 | 524 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); |
c1ef86f0 | 525 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
8173ec7c | 526 | int lttng_add_pthread_id_to_ctx(struct lttng_ctx **ctx); |
4847e9bb | 527 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a93bfc45 | 528 | void lttng_context_vtid_reset(void); |
c1ef86f0 | 529 | void lttng_context_vpid_reset(void); |
9f3fdbc6 | 530 | |
5a821cd6 MD |
531 | extern const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_metadata; |
532 | extern const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_discard; | |
533 | extern const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_overwrite; | |
c1fca457 | 534 | |
7dd08bec | 535 | struct lttng_transport *lttng_transport_find(const char *name); |
c1fca457 | 536 | |
7dd08bec MD |
537 | int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list); |
538 | void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list); | |
c8fcf224 MD |
539 | struct lttng_ust_tracepoint_iter * |
540 | lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list); | |
7dd08bec MD |
541 | int lttng_probes_get_field_list(struct lttng_ust_field_list *list); |
542 | void lttng_probes_prune_field_list(struct lttng_ust_field_list *list); | |
06d4f27e MD |
543 | struct lttng_ust_field_iter * |
544 | lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list); | |
c8fcf224 | 545 | |
7dd08bec | 546 | void lttng_filter_event_link_bytecode(struct lttng_event *event); |
e58095ef MD |
547 | void lttng_enabler_event_link_bytecode(struct lttng_event *event, |
548 | struct lttng_enabler *enabler); | |
7dd08bec | 549 | void lttng_free_event_filter_runtime(struct lttng_event *event); |
e58095ef MD |
550 | void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime); |
551 | ||
552 | struct cds_list_head *lttng_get_probe_list_head(void); | |
6715d7d1 | 553 | int lttng_session_active(void); |
e6c12e3d | 554 | |
51489cad | 555 | #endif /* _LTTNG_UST_EVENTS_H */ |