| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright 2019 (c) Francis Deslauriers <francis.deslauriers@efficios.com> |
| 5 | */ |
| 6 | |
| 7 | #ifndef _LTTNG_UST_EVENTS_INTERNAL_H |
| 8 | #define _LTTNG_UST_EVENTS_INTERNAL_H |
| 9 | |
| 10 | #include <stdint.h> |
| 11 | |
| 12 | #include <urcu/list.h> |
| 13 | #include <urcu/hlist.h> |
| 14 | |
| 15 | #include <lttng/ust-events.h> |
| 16 | |
| 17 | #include <ust-helper.h> |
| 18 | #include "ust-context-provider.h" |
| 19 | |
| 20 | struct lttng_ust_abi_obj; |
| 21 | struct lttng_event_notifier_group; |
| 22 | |
| 23 | union lttng_ust_abi_args { |
| 24 | struct { |
| 25 | void *chan_data; |
| 26 | int wakeup_fd; |
| 27 | } channel; |
| 28 | struct { |
| 29 | int shm_fd; |
| 30 | int wakeup_fd; |
| 31 | } stream; |
| 32 | struct { |
| 33 | struct lttng_ust_abi_field_iter entry; |
| 34 | } field_list; |
| 35 | struct { |
| 36 | char *ctxname; |
| 37 | } app_context; |
| 38 | struct { |
| 39 | int event_notifier_notif_fd; |
| 40 | } event_notifier_handle; |
| 41 | struct { |
| 42 | void *counter_data; |
| 43 | } counter; |
| 44 | struct { |
| 45 | int shm_fd; |
| 46 | } counter_shm; |
| 47 | }; |
| 48 | |
| 49 | struct lttng_ust_abi_objd_ops { |
| 50 | long (*cmd)(int objd, unsigned int cmd, unsigned long arg, |
| 51 | union lttng_ust_abi_args *args, void *owner); |
| 52 | int (*release)(int objd); |
| 53 | }; |
| 54 | |
| 55 | enum lttng_enabler_format_type { |
| 56 | LTTNG_ENABLER_FORMAT_STAR_GLOB, |
| 57 | LTTNG_ENABLER_FORMAT_EVENT, |
| 58 | }; |
| 59 | |
| 60 | /* |
| 61 | * Enabler field, within whatever object is enabling an event. Target of |
| 62 | * backward reference. |
| 63 | */ |
| 64 | struct lttng_enabler { |
| 65 | enum lttng_enabler_format_type format_type; |
| 66 | |
| 67 | /* head list of struct lttng_ust_filter_bytecode_node */ |
| 68 | struct cds_list_head filter_bytecode_head; |
| 69 | /* head list of struct lttng_ust_excluder_node */ |
| 70 | struct cds_list_head excluder_head; |
| 71 | |
| 72 | struct lttng_ust_abi_event event_param; |
| 73 | unsigned int enabled:1; |
| 74 | }; |
| 75 | |
| 76 | struct lttng_event_enabler { |
| 77 | struct lttng_enabler base; |
| 78 | struct cds_list_head node; /* per-session list of enablers */ |
| 79 | struct lttng_ust_channel_buffer *chan; |
| 80 | /* |
| 81 | * Unused, but kept around to make it explicit that the tracer can do |
| 82 | * it. |
| 83 | */ |
| 84 | struct lttng_ust_ctx *ctx; |
| 85 | }; |
| 86 | |
| 87 | struct lttng_event_notifier_enabler { |
| 88 | struct lttng_enabler base; |
| 89 | uint64_t error_counter_index; |
| 90 | struct cds_list_head node; /* per-app list of event_notifier enablers */ |
| 91 | struct cds_list_head capture_bytecode_head; |
| 92 | struct lttng_event_notifier_group *group; /* weak ref */ |
| 93 | uint64_t user_token; /* User-provided token */ |
| 94 | uint64_t num_captures; |
| 95 | }; |
| 96 | |
| 97 | enum lttng_ust_bytecode_node_type { |
| 98 | LTTNG_UST_BYTECODE_NODE_TYPE_FILTER, |
| 99 | LTTNG_UST_BYTECODE_NODE_TYPE_CAPTURE, |
| 100 | }; |
| 101 | |
| 102 | struct lttng_ust_bytecode_node { |
| 103 | enum lttng_ust_bytecode_node_type type; |
| 104 | struct cds_list_head node; |
| 105 | struct lttng_enabler *enabler; |
| 106 | struct { |
| 107 | uint32_t len; |
| 108 | uint32_t reloc_offset; |
| 109 | uint64_t seqnum; |
| 110 | char data[]; |
| 111 | } bc; |
| 112 | }; |
| 113 | |
| 114 | struct lttng_ust_excluder_node { |
| 115 | struct cds_list_head node; |
| 116 | struct lttng_enabler *enabler; |
| 117 | /* |
| 118 | * struct lttng_ust_event_exclusion had variable sized array, |
| 119 | * must be last field. |
| 120 | */ |
| 121 | struct lttng_ust_abi_event_exclusion excluder; |
| 122 | }; |
| 123 | |
| 124 | /* Data structures used by the tracer. */ |
| 125 | |
| 126 | struct tp_list_entry { |
| 127 | struct lttng_ust_abi_tracepoint_iter tp; |
| 128 | struct cds_list_head head; |
| 129 | }; |
| 130 | |
| 131 | struct lttng_ust_tracepoint_list { |
| 132 | struct tp_list_entry *iter; |
| 133 | struct cds_list_head head; |
| 134 | }; |
| 135 | |
| 136 | struct tp_field_list_entry { |
| 137 | struct lttng_ust_abi_field_iter field; |
| 138 | struct cds_list_head head; |
| 139 | }; |
| 140 | |
| 141 | struct lttng_ust_field_list { |
| 142 | struct tp_field_list_entry *iter; |
| 143 | struct cds_list_head head; |
| 144 | }; |
| 145 | |
| 146 | /* |
| 147 | * Objects in a linked-list of enablers, owned by an event or event_notifier. |
| 148 | * This is used because an event (or a event_notifier) can be enabled by more |
| 149 | * than one enabler and we want a quick way to iterate over all enablers of an |
| 150 | * object. |
| 151 | * |
| 152 | * For example, event rules "my_app:a*" and "my_app:ab*" will both match the |
| 153 | * event with the name "my_app:abc". |
| 154 | */ |
| 155 | struct lttng_enabler_ref { |
| 156 | struct cds_list_head node; /* enabler ref list */ |
| 157 | struct lttng_enabler *ref; /* backward ref */ |
| 158 | }; |
| 159 | |
| 160 | #define LTTNG_COUNTER_DIMENSION_MAX 8 |
| 161 | struct lttng_counter_dimension { |
| 162 | uint64_t size; |
| 163 | uint64_t underflow_index; |
| 164 | uint64_t overflow_index; |
| 165 | uint8_t has_underflow; |
| 166 | uint8_t has_overflow; |
| 167 | }; |
| 168 | |
| 169 | struct lttng_counter_ops { |
| 170 | struct lib_counter *(*counter_create)(size_t nr_dimensions, |
| 171 | const struct lttng_counter_dimension *dimensions, |
| 172 | int64_t global_sum_step, |
| 173 | int global_counter_fd, |
| 174 | int nr_counter_cpu_fds, |
| 175 | const int *counter_cpu_fds, |
| 176 | bool is_daemon); |
| 177 | void (*counter_destroy)(struct lib_counter *counter); |
| 178 | int (*counter_add)(struct lib_counter *counter, |
| 179 | const size_t *dimension_indexes, int64_t v); |
| 180 | int (*counter_read)(struct lib_counter *counter, |
| 181 | const size_t *dimension_indexes, int cpu, |
| 182 | int64_t *value, bool *overflow, bool *underflow); |
| 183 | int (*counter_aggregate)(struct lib_counter *counter, |
| 184 | const size_t *dimension_indexes, int64_t *value, |
| 185 | bool *overflow, bool *underflow); |
| 186 | int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); |
| 187 | }; |
| 188 | |
| 189 | struct lttng_counter { |
| 190 | int objd; |
| 191 | struct lttng_event_notifier_group *event_notifier_group; /* owner */ |
| 192 | struct lttng_counter_transport *transport; |
| 193 | struct lib_counter *counter; |
| 194 | struct lttng_counter_ops *ops; |
| 195 | }; |
| 196 | |
| 197 | #define LTTNG_UST_EVENT_HT_BITS 12 |
| 198 | #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS) |
| 199 | |
| 200 | struct lttng_ust_event_ht { |
| 201 | struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE]; |
| 202 | }; |
| 203 | |
| 204 | #define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12 |
| 205 | #define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS) |
| 206 | struct lttng_ust_event_notifier_ht { |
| 207 | struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE]; |
| 208 | }; |
| 209 | |
| 210 | #define LTTNG_UST_ENUM_HT_BITS 12 |
| 211 | #define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS) |
| 212 | |
| 213 | struct lttng_ust_enum_ht { |
| 214 | struct cds_hlist_head table[LTTNG_UST_ENUM_HT_SIZE]; |
| 215 | }; |
| 216 | |
| 217 | struct lttng_event_notifier_group { |
| 218 | int objd; |
| 219 | void *owner; |
| 220 | int notification_fd; |
| 221 | struct cds_list_head node; /* Event notifier group handle list */ |
| 222 | struct cds_list_head enablers_head; |
| 223 | struct cds_list_head event_notifiers_head; /* list of event_notifiers */ |
| 224 | struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */ |
| 225 | struct lttng_ust_ctx *ctx; /* contexts for filters. */ |
| 226 | |
| 227 | struct lttng_counter *error_counter; |
| 228 | size_t error_counter_len; |
| 229 | }; |
| 230 | |
| 231 | struct lttng_transport { |
| 232 | char *name; |
| 233 | struct cds_list_head node; |
| 234 | struct lttng_ust_channel_ops ops; |
| 235 | const struct lttng_ust_lib_ring_buffer_config *client_config; |
| 236 | }; |
| 237 | |
| 238 | struct lttng_counter_transport { |
| 239 | char *name; |
| 240 | struct cds_list_head node; |
| 241 | struct lttng_counter_ops ops; |
| 242 | const struct lib_counter_config *client_config; |
| 243 | }; |
| 244 | |
| 245 | struct lttng_ust_event_common_private { |
| 246 | struct lttng_ust_event_common *pub; /* Public event interface */ |
| 247 | |
| 248 | struct lttng_ust_event_desc *desc; |
| 249 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ |
| 250 | struct cds_list_head enablers_ref_head; |
| 251 | int registered; /* has reg'd tracepoint probe */ |
| 252 | uint64_t user_token; |
| 253 | }; |
| 254 | |
| 255 | struct lttng_ust_event_recorder_private { |
| 256 | struct lttng_ust_event_common_private parent; |
| 257 | |
| 258 | struct lttng_ust_event_recorder *pub; /* Public event interface */ |
| 259 | struct cds_list_head node; /* Event recorder list */ |
| 260 | struct cds_hlist_node hlist; /* Hash table of event recorders */ |
| 261 | }; |
| 262 | |
| 263 | struct lttng_ust_event_notifier_private { |
| 264 | struct lttng_ust_event_common_private parent; |
| 265 | |
| 266 | struct lttng_ust_event_notifier *pub; /* Public event notifier interface */ |
| 267 | struct lttng_event_notifier_group *group; /* weak ref */ |
| 268 | size_t num_captures; /* Needed to allocate the msgpack array. */ |
| 269 | uint64_t error_counter_index; |
| 270 | struct cds_list_head node; /* Event notifier list */ |
| 271 | struct cds_hlist_node hlist; /* Hash table of event notifiers */ |
| 272 | }; |
| 273 | |
| 274 | struct lttng_ust_bytecode_runtime_private { |
| 275 | struct bytecode_runtime *pub; /* Public bytecode runtime interface */ |
| 276 | |
| 277 | struct lttng_ust_bytecode_node *bc; |
| 278 | int link_failed; |
| 279 | /* |
| 280 | * Pointer to a URCU-protected pointer owned by an `struct |
| 281 | * lttng_session`or `struct lttng_event_notifier_group`. |
| 282 | */ |
| 283 | struct lttng_ust_ctx **pctx; |
| 284 | }; |
| 285 | |
| 286 | struct lttng_ust_session_private { |
| 287 | struct lttng_ust_session *pub; /* Public session interface */ |
| 288 | |
| 289 | int been_active; /* Been active ? */ |
| 290 | int objd; /* Object associated */ |
| 291 | struct cds_list_head chan_head; /* Channel list head */ |
| 292 | struct cds_list_head events_head; /* list of events */ |
| 293 | struct cds_list_head node; /* Session list */ |
| 294 | |
| 295 | /* New UST 2.1 */ |
| 296 | /* List of enablers */ |
| 297 | struct cds_list_head enablers_head; |
| 298 | struct lttng_ust_event_ht events_ht; /* ht of events */ |
| 299 | void *owner; /* object owner */ |
| 300 | int tstate:1; /* Transient enable state */ |
| 301 | |
| 302 | /* New UST 2.4 */ |
| 303 | int statedump_pending:1; |
| 304 | |
| 305 | /* New UST 2.8 */ |
| 306 | struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */ |
| 307 | struct cds_list_head enums_head; |
| 308 | struct lttng_ust_ctx *ctx; /* contexts for filters. */ |
| 309 | }; |
| 310 | |
| 311 | struct lttng_enum { |
| 312 | struct lttng_ust_enum_desc *desc; |
| 313 | struct lttng_ust_session *session; |
| 314 | struct cds_list_head node; /* Enum list in session */ |
| 315 | struct cds_hlist_node hlist; /* Session ht of enums */ |
| 316 | uint64_t id; /* Enumeration ID in sessiond */ |
| 317 | }; |
| 318 | |
| 319 | struct lttng_ust_shm_handle; |
| 320 | |
| 321 | struct lttng_ust_channel_ops_private { |
| 322 | struct lttng_ust_channel_ops *pub; /* Public channels ops interface */ |
| 323 | |
| 324 | struct lttng_ust_channel_buffer *(*channel_create)(const char *name, |
| 325 | void *buf_addr, |
| 326 | size_t subbuf_size, size_t num_subbuf, |
| 327 | unsigned int switch_timer_interval, |
| 328 | unsigned int read_timer_interval, |
| 329 | unsigned char *uuid, |
| 330 | uint32_t chan_id, |
| 331 | const int *stream_fds, int nr_stream_fds, |
| 332 | int64_t blocking_timeout); |
| 333 | void (*channel_destroy)(struct lttng_ust_channel_buffer *chan); |
| 334 | /* |
| 335 | * packet_avail_size returns the available size in the current |
| 336 | * packet. Note that the size returned is only a hint, since it |
| 337 | * may change due to concurrent writes. |
| 338 | */ |
| 339 | size_t (*packet_avail_size)(struct lttng_ust_lib_ring_buffer_channel *chan, |
| 340 | struct lttng_ust_shm_handle *handle); |
| 341 | int (*is_finalized)(struct lttng_ust_lib_ring_buffer_channel *chan); |
| 342 | int (*is_disabled)(struct lttng_ust_lib_ring_buffer_channel *chan); |
| 343 | int (*flush_buffer)(struct lttng_ust_lib_ring_buffer_channel *chan, |
| 344 | struct lttng_ust_shm_handle *handle); |
| 345 | }; |
| 346 | |
| 347 | struct lttng_ust_channel_common_private { |
| 348 | struct lttng_ust_channel_common *pub; /* Public channel interface */ |
| 349 | |
| 350 | int objd; /* Object associated with channel. */ |
| 351 | int tstate:1; /* Transient enable state */ |
| 352 | }; |
| 353 | |
| 354 | struct lttng_ust_channel_buffer_private { |
| 355 | struct lttng_ust_channel_common_private parent; |
| 356 | |
| 357 | struct lttng_ust_channel_buffer *pub; /* Public channel buffer interface */ |
| 358 | struct cds_list_head node; /* Channel list in session */ |
| 359 | int header_type; /* 0: unset, 1: compact, 2: large */ |
| 360 | unsigned int id; /* Channel ID */ |
| 361 | enum lttng_ust_abi_chan_type type; |
| 362 | struct lttng_ust_ctx *ctx; |
| 363 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ |
| 364 | }; |
| 365 | |
| 366 | /* |
| 367 | * IMPORTANT: this structure is part of the ABI between the consumer |
| 368 | * daemon and the UST library within traced applications. Changing it |
| 369 | * breaks the UST communication protocol. |
| 370 | * |
| 371 | * TODO: remove unused fields on next UST communication protocol |
| 372 | * breaking update. |
| 373 | */ |
| 374 | struct lttng_ust_abi_channel_config { |
| 375 | void *unused1; |
| 376 | int unused2; |
| 377 | void *unused3; |
| 378 | void *unused4; |
| 379 | int unused5; |
| 380 | struct cds_list_head unused6; |
| 381 | void *unused7; |
| 382 | int unused8; |
| 383 | void *unused9; |
| 384 | |
| 385 | /* Channel ID */ |
| 386 | unsigned int id; |
| 387 | enum lttng_ust_abi_chan_type unused10; |
| 388 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ |
| 389 | int unused11:1; |
| 390 | }; |
| 391 | |
| 392 | static inline |
| 393 | struct lttng_ust_type_integer *lttng_ust_get_type_integer(struct lttng_ust_type_common *type) |
| 394 | { |
| 395 | if (type->type != lttng_ust_type_integer) |
| 396 | return NULL; |
| 397 | return caa_container_of(type, struct lttng_ust_type_integer, parent); |
| 398 | } |
| 399 | |
| 400 | static inline |
| 401 | struct lttng_ust_type_float *lttng_ust_get_type_float(struct lttng_ust_type_common *type) |
| 402 | { |
| 403 | if (type->type != lttng_ust_type_float) |
| 404 | return NULL; |
| 405 | return caa_container_of(type, struct lttng_ust_type_float, parent); |
| 406 | } |
| 407 | |
| 408 | static inline |
| 409 | struct lttng_ust_type_string *lttng_ust_get_type_string(struct lttng_ust_type_common *type) |
| 410 | { |
| 411 | if (type->type != lttng_ust_type_string) |
| 412 | return NULL; |
| 413 | return caa_container_of(type, struct lttng_ust_type_string, parent); |
| 414 | } |
| 415 | |
| 416 | static inline |
| 417 | struct lttng_ust_type_enum *lttng_ust_get_type_enum(struct lttng_ust_type_common *type) |
| 418 | { |
| 419 | if (type->type != lttng_ust_type_enum) |
| 420 | return NULL; |
| 421 | return caa_container_of(type, struct lttng_ust_type_enum, parent); |
| 422 | } |
| 423 | |
| 424 | static inline |
| 425 | struct lttng_ust_type_array *lttng_ust_get_type_array(struct lttng_ust_type_common *type) |
| 426 | { |
| 427 | if (type->type != lttng_ust_type_array) |
| 428 | return NULL; |
| 429 | return caa_container_of(type, struct lttng_ust_type_array, parent); |
| 430 | } |
| 431 | |
| 432 | static inline |
| 433 | struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(struct lttng_ust_type_common *type) |
| 434 | { |
| 435 | if (type->type != lttng_ust_type_sequence) |
| 436 | return NULL; |
| 437 | return caa_container_of(type, struct lttng_ust_type_sequence, parent); |
| 438 | } |
| 439 | |
| 440 | static inline |
| 441 | struct lttng_ust_type_struct *lttng_ust_get_type_struct(struct lttng_ust_type_common *type) |
| 442 | { |
| 443 | if (type->type != lttng_ust_type_struct) |
| 444 | return NULL; |
| 445 | return caa_container_of(type, struct lttng_ust_type_struct, parent); |
| 446 | } |
| 447 | |
| 448 | /* Create dynamically allocated types. */ |
| 449 | static inline |
| 450 | struct lttng_ust_type_common *lttng_ust_create_type_integer(unsigned int size, |
| 451 | unsigned short alignment, bool signedness, unsigned int byte_order, |
| 452 | unsigned int base) |
| 453 | { |
| 454 | struct lttng_ust_type_integer *integer_type; |
| 455 | |
| 456 | integer_type = zmalloc(sizeof(struct lttng_ust_type_integer)); |
| 457 | if (!integer_type) |
| 458 | return NULL; |
| 459 | integer_type->parent.type = lttng_ust_type_integer; |
| 460 | integer_type->struct_size = sizeof(struct lttng_ust_type_integer); |
| 461 | integer_type->size = size; |
| 462 | integer_type->alignment = alignment; |
| 463 | integer_type->signedness = signedness; |
| 464 | integer_type->reverse_byte_order = byte_order != BYTE_ORDER; |
| 465 | integer_type->base = base; |
| 466 | return (struct lttng_ust_type_common *) integer_type; |
| 467 | } |
| 468 | |
| 469 | static inline |
| 470 | struct lttng_ust_type_common *lttng_ust_create_type_array_text(unsigned int length) |
| 471 | { |
| 472 | struct lttng_ust_type_array *array_type; |
| 473 | |
| 474 | array_type = zmalloc(sizeof(struct lttng_ust_type_array)); |
| 475 | if (!array_type) |
| 476 | return NULL; |
| 477 | array_type->parent.type = lttng_ust_type_array; |
| 478 | array_type->struct_size = sizeof(struct lttng_ust_type_array); |
| 479 | array_type->length = length; |
| 480 | array_type->alignment = 0; |
| 481 | array_type->encoding = lttng_ust_string_encoding_UTF8; |
| 482 | array_type->elem_type = lttng_ust_create_type_integer(sizeof(char) * CHAR_BIT, |
| 483 | lttng_alignof(char) * CHAR_BIT, lttng_is_signed_type(char), |
| 484 | BYTE_ORDER, 10); |
| 485 | if (!array_type->elem_type) |
| 486 | goto error_elem; |
| 487 | return (struct lttng_ust_type_common *) array_type; |
| 488 | |
| 489 | error_elem: |
| 490 | free(array_type); |
| 491 | return NULL; |
| 492 | } |
| 493 | |
| 494 | /* |
| 495 | * Destroy dynamically allocated types, including nested types. |
| 496 | * For enumerations, it does not free the enumeration mapping description. |
| 497 | */ |
| 498 | static inline |
| 499 | void lttng_ust_destroy_type(struct lttng_ust_type_common *type) |
| 500 | { |
| 501 | if (!type) |
| 502 | return; |
| 503 | |
| 504 | switch (type->type) { |
| 505 | case lttng_ust_type_integer: |
| 506 | case lttng_ust_type_string: |
| 507 | case lttng_ust_type_float: |
| 508 | case lttng_ust_type_dynamic: |
| 509 | free(type); |
| 510 | break; |
| 511 | case lttng_ust_type_enum: |
| 512 | { |
| 513 | struct lttng_ust_type_enum *enum_type = (struct lttng_ust_type_enum *) type; |
| 514 | |
| 515 | lttng_ust_destroy_type(enum_type->container_type); |
| 516 | free(enum_type); |
| 517 | break; |
| 518 | } |
| 519 | case lttng_ust_type_array: |
| 520 | { |
| 521 | struct lttng_ust_type_array *array_type = (struct lttng_ust_type_array *) type; |
| 522 | |
| 523 | lttng_ust_destroy_type(array_type->elem_type); |
| 524 | free(array_type); |
| 525 | break; |
| 526 | } |
| 527 | case lttng_ust_type_sequence: |
| 528 | { |
| 529 | struct lttng_ust_type_sequence *sequence_type = (struct lttng_ust_type_sequence *) type; |
| 530 | |
| 531 | lttng_ust_destroy_type(sequence_type->elem_type); |
| 532 | free(sequence_type); |
| 533 | break; |
| 534 | } |
| 535 | case lttng_ust_type_struct: |
| 536 | { |
| 537 | struct lttng_ust_type_struct *struct_type = (struct lttng_ust_type_struct *) type; |
| 538 | unsigned int i; |
| 539 | |
| 540 | for (i = 0; i < struct_type->nr_fields; i++) |
| 541 | lttng_ust_destroy_type(struct_type->fields[i]->type); |
| 542 | free(struct_type); |
| 543 | break; |
| 544 | } |
| 545 | default: |
| 546 | abort(); |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | static inline |
| 551 | struct lttng_enabler *lttng_event_enabler_as_enabler( |
| 552 | struct lttng_event_enabler *event_enabler) |
| 553 | { |
| 554 | return &event_enabler->base; |
| 555 | } |
| 556 | |
| 557 | static inline |
| 558 | struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( |
| 559 | struct lttng_event_notifier_enabler *event_notifier_enabler) |
| 560 | { |
| 561 | return &event_notifier_enabler->base; |
| 562 | } |
| 563 | |
| 564 | /* |
| 565 | * Allocate and initialize a `struct lttng_event_enabler` object. |
| 566 | * |
| 567 | * On success, returns a `struct lttng_event_enabler`, |
| 568 | * On memory error, returns NULL. |
| 569 | */ |
| 570 | __attribute__((visibility("hidden"))) |
| 571 | struct lttng_event_enabler *lttng_event_enabler_create( |
| 572 | enum lttng_enabler_format_type format_type, |
| 573 | struct lttng_ust_abi_event *event_param, |
| 574 | struct lttng_ust_channel_buffer *chan); |
| 575 | |
| 576 | /* |
| 577 | * Destroy a `struct lttng_event_enabler` object. |
| 578 | */ |
| 579 | __attribute__((visibility("hidden"))) |
| 580 | void lttng_event_enabler_destroy(struct lttng_event_enabler *enabler); |
| 581 | |
| 582 | /* |
| 583 | * Enable a `struct lttng_event_enabler` object and all events related to this |
| 584 | * enabler. |
| 585 | */ |
| 586 | __attribute__((visibility("hidden"))) |
| 587 | int lttng_event_enabler_enable(struct lttng_event_enabler *enabler); |
| 588 | |
| 589 | /* |
| 590 | * Disable a `struct lttng_event_enabler` object and all events related to this |
| 591 | * enabler. |
| 592 | */ |
| 593 | __attribute__((visibility("hidden"))) |
| 594 | int lttng_event_enabler_disable(struct lttng_event_enabler *enabler); |
| 595 | |
| 596 | /* |
| 597 | * Attach filter bytecode program to `struct lttng_event_enabler` and all |
| 598 | * events related to this enabler. |
| 599 | */ |
| 600 | __attribute__((visibility("hidden"))) |
| 601 | int lttng_event_enabler_attach_filter_bytecode( |
| 602 | struct lttng_event_enabler *enabler, |
| 603 | struct lttng_ust_bytecode_node **bytecode); |
| 604 | |
| 605 | /* |
| 606 | * Attach an application context to an event enabler. |
| 607 | * |
| 608 | * Not implemented. |
| 609 | */ |
| 610 | __attribute__((visibility("hidden"))) |
| 611 | int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler, |
| 612 | struct lttng_ust_abi_context *ctx); |
| 613 | |
| 614 | /* |
| 615 | * Attach exclusion list to `struct lttng_event_enabler` and all |
| 616 | * events related to this enabler. |
| 617 | */ |
| 618 | __attribute__((visibility("hidden"))) |
| 619 | int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler, |
| 620 | struct lttng_ust_excluder_node **excluder); |
| 621 | |
| 622 | /* |
| 623 | * Synchronize bytecodes for the enabler and the instance (event or |
| 624 | * event_notifier). |
| 625 | * |
| 626 | * This function goes over all bytecode programs of the enabler (event or |
| 627 | * event_notifier enabler) to ensure each is linked to the provided instance. |
| 628 | */ |
| 629 | __attribute__((visibility("hidden"))) |
| 630 | void lttng_enabler_link_bytecode(struct lttng_ust_event_desc *event_desc, |
| 631 | struct lttng_ust_ctx **ctx, |
| 632 | struct cds_list_head *instance_bytecode_runtime_head, |
| 633 | struct cds_list_head *enabler_bytecode_runtime_head); |
| 634 | |
| 635 | /* |
| 636 | * Allocate and initialize a `struct lttng_event_notifier_group` object. |
| 637 | * |
| 638 | * On success, returns a `struct lttng_triggre_group`, |
| 639 | * on memory error, returns NULL. |
| 640 | */ |
| 641 | __attribute__((visibility("hidden"))) |
| 642 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); |
| 643 | |
| 644 | /* |
| 645 | * Destroy a `struct lttng_event_notifier_group` object. |
| 646 | */ |
| 647 | __attribute__((visibility("hidden"))) |
| 648 | void lttng_event_notifier_group_destroy( |
| 649 | struct lttng_event_notifier_group *event_notifier_group); |
| 650 | |
| 651 | /* |
| 652 | * Allocate and initialize a `struct lttng_event_notifier_enabler` object. |
| 653 | * |
| 654 | * On success, returns a `struct lttng_event_notifier_enabler`, |
| 655 | * On memory error, returns NULL. |
| 656 | */ |
| 657 | __attribute__((visibility("hidden"))) |
| 658 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( |
| 659 | struct lttng_event_notifier_group *event_notifier_group, |
| 660 | enum lttng_enabler_format_type format_type, |
| 661 | struct lttng_ust_abi_event_notifier *event_notifier_param); |
| 662 | |
| 663 | /* |
| 664 | * Destroy a `struct lttng_event_notifier_enabler` object. |
| 665 | */ |
| 666 | __attribute__((visibility("hidden"))) |
| 667 | void lttng_event_notifier_enabler_destroy( |
| 668 | struct lttng_event_notifier_enabler *event_notifier_enabler); |
| 669 | |
| 670 | /* |
| 671 | * Enable a `struct lttng_event_notifier_enabler` object and all event |
| 672 | * notifiers related to this enabler. |
| 673 | */ |
| 674 | __attribute__((visibility("hidden"))) |
| 675 | int lttng_event_notifier_enabler_enable( |
| 676 | struct lttng_event_notifier_enabler *event_notifier_enabler); |
| 677 | |
| 678 | /* |
| 679 | * Disable a `struct lttng_event_notifier_enabler` object and all event |
| 680 | * notifiers related to this enabler. |
| 681 | */ |
| 682 | __attribute__((visibility("hidden"))) |
| 683 | int lttng_event_notifier_enabler_disable( |
| 684 | struct lttng_event_notifier_enabler *event_notifier_enabler); |
| 685 | |
| 686 | /* |
| 687 | * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and |
| 688 | * all event notifiers related to this enabler. |
| 689 | */ |
| 690 | __attribute__((visibility("hidden"))) |
| 691 | int lttng_event_notifier_enabler_attach_filter_bytecode( |
| 692 | struct lttng_event_notifier_enabler *event_notifier_enabler, |
| 693 | struct lttng_ust_bytecode_node **bytecode); |
| 694 | |
| 695 | /* |
| 696 | * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and |
| 697 | * all event_notifiers related to this enabler. |
| 698 | */ |
| 699 | __attribute__((visibility("hidden"))) |
| 700 | int lttng_event_notifier_enabler_attach_capture_bytecode( |
| 701 | struct lttng_event_notifier_enabler *event_notifier_enabler, |
| 702 | struct lttng_ust_bytecode_node **bytecode); |
| 703 | |
| 704 | /* |
| 705 | * Attach exclusion list to `struct lttng_event_notifier_enabler` and all |
| 706 | * event notifiers related to this enabler. |
| 707 | */ |
| 708 | __attribute__((visibility("hidden"))) |
| 709 | int lttng_event_notifier_enabler_attach_exclusion( |
| 710 | struct lttng_event_notifier_enabler *event_notifier_enabler, |
| 711 | struct lttng_ust_excluder_node **excluder); |
| 712 | |
| 713 | __attribute__((visibility("hidden"))) |
| 714 | void lttng_free_event_filter_runtime(struct lttng_ust_event_common *event); |
| 715 | |
| 716 | /* |
| 717 | * Connect the probe on all enablers matching this event description. |
| 718 | * Called on library load. |
| 719 | */ |
| 720 | __attribute__((visibility("hidden"))) |
| 721 | int lttng_fix_pending_event_notifiers(void); |
| 722 | |
| 723 | __attribute__((visibility("hidden"))) |
| 724 | struct lttng_counter *lttng_ust_counter_create( |
| 725 | const char *counter_transport_name, |
| 726 | size_t number_dimensions, const struct lttng_counter_dimension *dimensions); |
| 727 | |
| 728 | #ifdef HAVE_PERF_EVENT |
| 729 | |
| 730 | __attribute__((visibility("hidden"))) |
| 731 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
| 732 | uint64_t config, |
| 733 | const char *name, |
| 734 | struct lttng_ust_ctx **ctx); |
| 735 | |
| 736 | __attribute__((visibility("hidden"))) |
| 737 | int lttng_perf_counter_init(void); |
| 738 | |
| 739 | __attribute__((visibility("hidden"))) |
| 740 | void lttng_perf_counter_exit(void); |
| 741 | |
| 742 | #else /* #ifdef HAVE_PERF_EVENT */ |
| 743 | |
| 744 | static inline |
| 745 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
| 746 | uint64_t config, |
| 747 | const char *name, |
| 748 | struct lttng_ust_ctx **ctx) |
| 749 | { |
| 750 | return -ENOSYS; |
| 751 | } |
| 752 | static inline |
| 753 | int lttng_perf_counter_init(void) |
| 754 | { |
| 755 | return 0; |
| 756 | } |
| 757 | static inline |
| 758 | void lttng_perf_counter_exit(void) |
| 759 | { |
| 760 | } |
| 761 | #endif /* #else #ifdef HAVE_PERF_EVENT */ |
| 762 | |
| 763 | __attribute__((visibility("hidden"))) |
| 764 | int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list); |
| 765 | |
| 766 | __attribute__((visibility("hidden"))) |
| 767 | void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list); |
| 768 | |
| 769 | __attribute__((visibility("hidden"))) |
| 770 | int lttng_probes_get_field_list(struct lttng_ust_field_list *list); |
| 771 | |
| 772 | __attribute__((visibility("hidden"))) |
| 773 | void lttng_probes_prune_field_list(struct lttng_ust_field_list *list); |
| 774 | |
| 775 | __attribute__((visibility("hidden"))) |
| 776 | struct lttng_ust_abi_tracepoint_iter * |
| 777 | lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list); |
| 778 | |
| 779 | __attribute__((visibility("hidden"))) |
| 780 | struct lttng_ust_abi_field_iter * |
| 781 | lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list); |
| 782 | |
| 783 | __attribute__((visibility("hidden"))) |
| 784 | struct lttng_ust_session *lttng_session_create(void); |
| 785 | |
| 786 | __attribute__((visibility("hidden"))) |
| 787 | int lttng_session_enable(struct lttng_ust_session *session); |
| 788 | |
| 789 | __attribute__((visibility("hidden"))) |
| 790 | int lttng_session_disable(struct lttng_ust_session *session); |
| 791 | |
| 792 | __attribute__((visibility("hidden"))) |
| 793 | int lttng_session_statedump(struct lttng_ust_session *session); |
| 794 | |
| 795 | __attribute__((visibility("hidden"))) |
| 796 | void lttng_session_destroy(struct lttng_ust_session *session); |
| 797 | |
| 798 | /* |
| 799 | * Called with ust lock held. |
| 800 | */ |
| 801 | __attribute__((visibility("hidden"))) |
| 802 | int lttng_session_active(void); |
| 803 | |
| 804 | __attribute__((visibility("hidden"))) |
| 805 | struct cds_list_head *lttng_get_sessions(void); |
| 806 | |
| 807 | __attribute__((visibility("hidden"))) |
| 808 | void lttng_handle_pending_statedump(void *owner); |
| 809 | |
| 810 | __attribute__((visibility("hidden"))) |
| 811 | int lttng_channel_enable(struct lttng_ust_channel_common *lttng_channel); |
| 812 | |
| 813 | __attribute__((visibility("hidden"))) |
| 814 | int lttng_channel_disable(struct lttng_ust_channel_common *lttng_channel); |
| 815 | |
| 816 | __attribute__((visibility("hidden"))) |
| 817 | void lttng_transport_register(struct lttng_transport *transport); |
| 818 | |
| 819 | __attribute__((visibility("hidden"))) |
| 820 | void lttng_transport_unregister(struct lttng_transport *transport); |
| 821 | |
| 822 | /* This is ABI between liblttng-ust and liblttng-ust-ctl */ |
| 823 | struct lttng_transport *lttng_ust_transport_find(const char *name); |
| 824 | |
| 825 | /* This is ABI between liblttng-ust and liblttng-ust-dl */ |
| 826 | void lttng_ust_dl_update(void *ip); |
| 827 | |
| 828 | __attribute__((visibility("hidden"))) |
| 829 | void lttng_probe_provider_unregister_events(struct lttng_ust_probe_desc *desc); |
| 830 | |
| 831 | __attribute__((visibility("hidden"))) |
| 832 | int lttng_fix_pending_events(void); |
| 833 | |
| 834 | __attribute__((visibility("hidden"))) |
| 835 | struct cds_list_head *lttng_get_probe_list_head(void); |
| 836 | |
| 837 | __attribute__((visibility("hidden"))) |
| 838 | struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session, |
| 839 | struct lttng_ust_enum_desc *enum_desc); |
| 840 | |
| 841 | __attribute__((visibility("hidden"))) |
| 842 | int lttng_abi_create_root_handle(void); |
| 843 | |
| 844 | __attribute__((visibility("hidden"))) |
| 845 | const struct lttng_ust_abi_objd_ops *lttng_ust_abi_objd_ops(int id); |
| 846 | |
| 847 | __attribute__((visibility("hidden"))) |
| 848 | int lttng_ust_abi_objd_unref(int id, int is_owner); |
| 849 | |
| 850 | __attribute__((visibility("hidden"))) |
| 851 | void lttng_ust_abi_exit(void); |
| 852 | |
| 853 | __attribute__((visibility("hidden"))) |
| 854 | void lttng_ust_abi_events_exit(void); |
| 855 | |
| 856 | __attribute__((visibility("hidden"))) |
| 857 | void lttng_ust_abi_objd_table_owner_cleanup(void *owner); |
| 858 | |
| 859 | __attribute__((visibility("hidden"))) |
| 860 | struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void); |
| 861 | |
| 862 | __attribute__((visibility("hidden"))) |
| 863 | void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan); |
| 864 | |
| 865 | #endif /* _LTTNG_UST_EVENTS_INTERNAL_H */ |