liblttng-ust/ust-events-internal.h

   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-context-provider.h"
  18
  19 struct lttng_ust_abi_obj;
  20 struct lttng_event_notifier_group;
  21
  22 union lttng_ust_abi_args {
  23         struct {
  24                 void *chan_data;
  25                 int wakeup_fd;
  26         } channel;
  27         struct {
  28                 int shm_fd;
  29                 int wakeup_fd;
  30         } stream;
  31         struct {
  32                 struct lttng_ust_abi_field_iter entry;
  33         } field_list;
  34         struct {
  35                 char *ctxname;
  36         } app_context;
  37         struct {
  38                 int event_notifier_notif_fd;
  39         } event_notifier_handle;
  40         struct {
  41                 void *counter_data;
  42         } counter;
  43         struct {
  44                 int shm_fd;
  45         } counter_shm;
  46 };
  47
  48 struct lttng_ust_abi_objd_ops {
  49         long (*cmd)(int objd, unsigned int cmd, unsigned long arg,
  50                 union lttng_ust_abi_args *args, void *owner);
  51         int (*release)(int objd);
  52 };
  53
  54 enum lttng_enabler_format_type {
  55         LTTNG_ENABLER_FORMAT_STAR_GLOB,
  56         LTTNG_ENABLER_FORMAT_EVENT,
  57 };
  58
  59 /*
  60  * Enabler field, within whatever object is enabling an event. Target of
  61  * backward reference.
  62  */
  63 struct lttng_enabler {
  64         enum lttng_enabler_format_type format_type;
  65
  66         /* head list of struct lttng_ust_filter_bytecode_node */
  67         struct cds_list_head filter_bytecode_head;
  68         /* head list of struct lttng_ust_excluder_node */
  69         struct cds_list_head excluder_head;
  70
  71         struct lttng_ust_abi_event event_param;
  72         unsigned int enabled:1;
  73 };
  74
  75 struct lttng_event_enabler {
  76         struct lttng_enabler base;
  77         struct cds_list_head node;      /* per-session list of enablers */
  78         struct lttng_channel *chan;
  79         /*
  80          * Unused, but kept around to make it explicit that the tracer can do
  81          * it.
  82          */
  83         struct lttng_ust_ctx *ctx;
  84 };
  85
  86 struct lttng_event_notifier_enabler {
  87         struct lttng_enabler base;
  88         uint64_t error_counter_index;
  89         struct cds_list_head node;      /* per-app list of event_notifier enablers */
  90         struct cds_list_head capture_bytecode_head;
  91         struct lttng_event_notifier_group *group; /* weak ref */
  92         uint64_t user_token;            /* User-provided token */
  93         uint64_t num_captures;
  94 };
  95
  96 enum lttng_ust_bytecode_node_type {
  97         LTTNG_UST_BYTECODE_NODE_TYPE_FILTER,
  98         LTTNG_UST_BYTECODE_NODE_TYPE_CAPTURE,
  99 };
 100
 101 struct lttng_ust_bytecode_node {
 102         enum lttng_ust_bytecode_node_type type;
 103         struct cds_list_head node;
 104         struct lttng_enabler *enabler;
 105         struct  {
 106                 uint32_t len;
 107                 uint32_t reloc_offset;
 108                 uint64_t seqnum;
 109                 char data[];
 110         } bc;
 111 };
 112
 113 struct lttng_ust_excluder_node {
 114         struct cds_list_head node;
 115         struct lttng_enabler *enabler;
 116         /*
 117          * struct lttng_ust_event_exclusion had variable sized array,
 118          * must be last field.
 119          */
 120         struct lttng_ust_abi_event_exclusion excluder;
 121 };
 122
 123 /* Data structures used by the tracer. */
 124
 125 struct tp_list_entry {
 126         struct lttng_ust_abi_tracepoint_iter tp;
 127         struct cds_list_head head;
 128 };
 129
 130 struct lttng_ust_tracepoint_list {
 131         struct tp_list_entry *iter;
 132         struct cds_list_head head;
 133 };
 134
 135 struct tp_field_list_entry {
 136         struct lttng_ust_abi_field_iter field;
 137         struct cds_list_head head;
 138 };
 139
 140 struct lttng_ust_field_list {
 141         struct tp_field_list_entry *iter;
 142         struct cds_list_head head;
 143 };
 144
 145 /*
 146  * Objects in a linked-list of enablers, owned by an event or event_notifier.
 147  * This is used because an event (or a event_notifier) can be enabled by more
 148  * than one enabler and we want a quick way to iterate over all enablers of an
 149  * object.
 150  *
 151  * For example, event rules "my_app:a*" and "my_app:ab*" will both match the
 152  * event with the name "my_app:abc".
 153  */
 154 struct lttng_enabler_ref {
 155         struct cds_list_head node;              /* enabler ref list */
 156         struct lttng_enabler *ref;              /* backward ref */
 157 };
 158
 159 #define LTTNG_COUNTER_DIMENSION_MAX     8
 160 struct lttng_counter_dimension {
 161         uint64_t size;
 162         uint64_t underflow_index;
 163         uint64_t overflow_index;
 164         uint8_t has_underflow;
 165         uint8_t has_overflow;
 166 };
 167
 168 struct lttng_counter_ops {
 169         struct lib_counter *(*counter_create)(size_t nr_dimensions,
 170                         const struct lttng_counter_dimension *dimensions,
 171                         int64_t global_sum_step,
 172                         int global_counter_fd,
 173                         int nr_counter_cpu_fds,
 174                         const int *counter_cpu_fds,
 175                         bool is_daemon);
 176         void (*counter_destroy)(struct lib_counter *counter);
 177         int (*counter_add)(struct lib_counter *counter,
 178                         const size_t *dimension_indexes, int64_t v);
 179         int (*counter_read)(struct lib_counter *counter,
 180                         const size_t *dimension_indexes, int cpu,
 181                         int64_t *value, bool *overflow, bool *underflow);
 182         int (*counter_aggregate)(struct lib_counter *counter,
 183                         const size_t *dimension_indexes, int64_t *value,
 184                         bool *overflow, bool *underflow);
 185         int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes);
 186 };
 187
 188 struct lttng_counter {
 189         int objd;
 190         struct lttng_event_notifier_group *event_notifier_group;    /* owner */
 191         struct lttng_counter_transport *transport;
 192         struct lib_counter *counter;
 193         struct lttng_counter_ops *ops;
 194 };
 195
 196 #define LTTNG_UST_EVENT_HT_BITS         12
 197 #define LTTNG_UST_EVENT_HT_SIZE         (1U << LTTNG_UST_EVENT_HT_BITS)
 198
 199 struct lttng_ust_event_ht {
 200         struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE];
 201 };
 202
 203 #define LTTNG_UST_EVENT_NOTIFIER_HT_BITS                12
 204 #define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE                (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS)
 205 struct lttng_ust_event_notifier_ht {
 206         struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE];
 207 };
 208
 209 #define LTTNG_UST_ENUM_HT_BITS          12
 210 #define LTTNG_UST_ENUM_HT_SIZE          (1U << LTTNG_UST_ENUM_HT_BITS)
 211
 212 struct lttng_ust_enum_ht {
 213         struct cds_hlist_head table[LTTNG_UST_ENUM_HT_SIZE];
 214 };
 215
 216 struct lttng_event_notifier_group {
 217         int objd;
 218         void *owner;
 219         int notification_fd;
 220         struct cds_list_head node;              /* Event notifier group handle list */
 221         struct cds_list_head enablers_head;
 222         struct cds_list_head event_notifiers_head;      /* list of event_notifiers */
 223         struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */
 224         struct lttng_ust_ctx *ctx;                      /* contexts for filters. */
 225
 226         struct lttng_counter *error_counter;
 227         size_t error_counter_len;
 228 };
 229
 230 struct lttng_transport {
 231         char *name;
 232         struct cds_list_head node;
 233         struct lttng_ust_channel_ops ops;
 234         const struct lttng_ust_lib_ring_buffer_config *client_config;
 235 };
 236
 237 struct lttng_counter_transport {
 238         char *name;
 239         struct cds_list_head node;
 240         struct lttng_counter_ops ops;
 241         const struct lib_counter_config *client_config;
 242 };
 243
 244 struct lttng_ust_event_common_private {
 245         struct lttng_ust_event_common *pub;     /* Public event interface */
 246
 247         const struct lttng_ust_event_desc *desc;
 248         /* Backward references: list of lttng_enabler_ref (ref to enablers) */
 249         struct cds_list_head enablers_ref_head;
 250         int registered;                 /* has reg'd tracepoint probe */
 251         uint64_t user_token;
 252 };
 253
 254 struct lttng_ust_event_recorder_private {
 255         struct lttng_ust_event_common_private parent;
 256
 257         struct lttng_ust_event_recorder *pub;   /* Public event interface */
 258         struct cds_list_head node;              /* Event recorder list */
 259         struct cds_hlist_node hlist;            /* Hash table of event recorders */
 260 };
 261
 262 struct lttng_ust_event_notifier_private {
 263         struct lttng_ust_event_common_private parent;
 264
 265         struct lttng_ust_event_notifier *pub;   /* Public event notifier interface */
 266         struct lttng_event_notifier_group *group; /* weak ref */
 267         size_t num_captures;                    /* Needed to allocate the msgpack array. */
 268         uint64_t error_counter_index;
 269         struct cds_list_head node;              /* Event notifier list */
 270         struct cds_hlist_node hlist;            /* Hash table of event notifiers */
 271 };
 272
 273 struct lttng_ust_bytecode_runtime_private {
 274         struct bytecode_runtime *pub;   /* Public bytecode runtime interface */
 275
 276         struct lttng_ust_bytecode_node *bc;
 277         int link_failed;
 278         /*
 279          * Pointer to a URCU-protected pointer owned by an `struct
 280          * lttng_session`or `struct lttng_event_notifier_group`.
 281          */
 282         struct lttng_ust_ctx **pctx;
 283 };
 284
 285 struct lttng_ust_session_private {
 286         struct lttng_ust_session *pub;          /* Public session interface */
 287
 288         int been_active;                        /* Been active ? */
 289         int objd;                               /* Object associated */
 290         struct cds_list_head chan_head;         /* Channel list head */
 291         struct cds_list_head events_head;       /* list of events */
 292         struct cds_list_head node;              /* Session list */
 293
 294         /* New UST 2.1 */
 295         /* List of enablers */
 296         struct cds_list_head enablers_head;
 297         struct lttng_ust_event_ht events_ht;    /* ht of events */
 298         void *owner;                            /* object owner */
 299         int tstate:1;                           /* Transient enable state */
 300
 301         /* New UST 2.4 */
 302         int statedump_pending:1;
 303
 304         /* New UST 2.8 */
 305         struct lttng_ust_enum_ht enums_ht;      /* ht of enumerations */
 306         struct cds_list_head enums_head;
 307         struct lttng_ust_ctx *ctx;                      /* contexts for filters. */
 308 };
 309
 310 struct lttng_enum {
 311         const struct lttng_ust_enum_desc *desc;
 312         struct lttng_ust_session *session;
 313         struct cds_list_head node;      /* Enum list in session */
 314         struct cds_hlist_node hlist;    /* Session ht of enums */
 315         uint64_t id;                    /* Enumeration ID in sessiond */
 316 };
 317
 318 static inline
 319 struct lttng_enabler *lttng_event_enabler_as_enabler(
 320                 struct lttng_event_enabler *event_enabler)
 321 {
 322         return &event_enabler->base;
 323 }
 324
 325 static inline
 326 struct lttng_enabler *lttng_event_notifier_enabler_as_enabler(
 327                 struct lttng_event_notifier_enabler *event_notifier_enabler)
 328 {
 329         return &event_notifier_enabler->base;
 330 }
 331
 332 /*
 333  * Allocate and initialize a `struct lttng_event_enabler` object.
 334  *
 335  * On success, returns a `struct lttng_event_enabler`,
 336  * On memory error, returns NULL.
 337  */
 338 __attribute__((visibility("hidden")))
 339 struct lttng_event_enabler *lttng_event_enabler_create(
 340                 enum lttng_enabler_format_type format_type,
 341                 struct lttng_ust_abi_event *event_param,
 342                 struct lttng_channel *chan);
 343
 344 /*
 345  * Destroy a `struct lttng_event_enabler` object.
 346  */
 347 __attribute__((visibility("hidden")))
 348 void lttng_event_enabler_destroy(struct lttng_event_enabler *enabler);
 349
 350 /*
 351  * Enable a `struct lttng_event_enabler` object and all events related to this
 352  * enabler.
 353  */
 354 __attribute__((visibility("hidden")))
 355 int lttng_event_enabler_enable(struct lttng_event_enabler *enabler);
 356
 357 /*
 358  * Disable a `struct lttng_event_enabler` object and all events related to this
 359  * enabler.
 360  */
 361 __attribute__((visibility("hidden")))
 362 int lttng_event_enabler_disable(struct lttng_event_enabler *enabler);
 363
 364 /*
 365  * Attach filter bytecode program to `struct lttng_event_enabler` and all
 366  * events related to this enabler.
 367  */
 368 __attribute__((visibility("hidden")))
 369 int lttng_event_enabler_attach_filter_bytecode(
 370                 struct lttng_event_enabler *enabler,
 371                 struct lttng_ust_bytecode_node **bytecode);
 372
 373 /*
 374  * Attach an application context to an event enabler.
 375  *
 376  * Not implemented.
 377  */
 378 __attribute__((visibility("hidden")))
 379 int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler,
 380                 struct lttng_ust_abi_context *ctx);
 381
 382 /*
 383  * Attach exclusion list to `struct lttng_event_enabler` and all
 384  * events related to this enabler.
 385  */
 386 __attribute__((visibility("hidden")))
 387 int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler,
 388                 struct lttng_ust_excluder_node **excluder);
 389
 390 /*
 391  * Synchronize bytecodes for the enabler and the instance (event or
 392  * event_notifier).
 393  *
 394  * This function goes over all bytecode programs of the enabler (event or
 395  * event_notifier enabler) to ensure each is linked to the provided instance.
 396  */
 397 __attribute__((visibility("hidden")))
 398 void lttng_enabler_link_bytecode(const struct lttng_ust_event_desc *event_desc,
 399                 struct lttng_ust_ctx **ctx,
 400                 struct cds_list_head *instance_bytecode_runtime_head,
 401                 struct cds_list_head *enabler_bytecode_runtime_head);
 402
 403 /*
 404  * Allocate and initialize a `struct lttng_event_notifier_group` object.
 405  *
 406  * On success, returns a `struct lttng_triggre_group`,
 407  * on memory error, returns NULL.
 408  */
 409 __attribute__((visibility("hidden")))
 410 struct lttng_event_notifier_group *lttng_event_notifier_group_create(void);
 411
 412 /*
 413  * Destroy a `struct lttng_event_notifier_group` object.
 414  */
 415 __attribute__((visibility("hidden")))
 416 void lttng_event_notifier_group_destroy(
 417                 struct lttng_event_notifier_group *event_notifier_group);
 418
 419 /*
 420  * Allocate and initialize a `struct lttng_event_notifier_enabler` object.
 421  *
 422  * On success, returns a `struct lttng_event_notifier_enabler`,
 423  * On memory error, returns NULL.
 424  */
 425 __attribute__((visibility("hidden")))
 426 struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create(
 427                 struct lttng_event_notifier_group *event_notifier_group,
 428                 enum lttng_enabler_format_type format_type,
 429                 struct lttng_ust_abi_event_notifier *event_notifier_param);
 430
 431 /*
 432  * Destroy a `struct lttng_event_notifier_enabler` object.
 433  */
 434 __attribute__((visibility("hidden")))
 435 void lttng_event_notifier_enabler_destroy(
 436                 struct lttng_event_notifier_enabler *event_notifier_enabler);
 437
 438 /*
 439  * Enable a `struct lttng_event_notifier_enabler` object and all event
 440  * notifiers related to this enabler.
 441  */
 442 __attribute__((visibility("hidden")))
 443 int lttng_event_notifier_enabler_enable(
 444                 struct lttng_event_notifier_enabler *event_notifier_enabler);
 445
 446 /*
 447  * Disable a `struct lttng_event_notifier_enabler` object and all event
 448  * notifiers related to this enabler.
 449  */
 450 __attribute__((visibility("hidden")))
 451 int lttng_event_notifier_enabler_disable(
 452                 struct lttng_event_notifier_enabler *event_notifier_enabler);
 453
 454 /*
 455  * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and
 456  * all event notifiers related to this enabler.
 457  */
 458 __attribute__((visibility("hidden")))
 459 int lttng_event_notifier_enabler_attach_filter_bytecode(
 460                 struct lttng_event_notifier_enabler *event_notifier_enabler,
 461                 struct lttng_ust_bytecode_node **bytecode);
 462
 463 /*
 464  * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and
 465  * all event_notifiers related to this enabler.
 466  */
 467 __attribute__((visibility("hidden")))
 468 int lttng_event_notifier_enabler_attach_capture_bytecode(
 469                 struct lttng_event_notifier_enabler *event_notifier_enabler,
 470                 struct lttng_ust_bytecode_node **bytecode);
 471
 472 /*
 473  * Attach exclusion list to `struct lttng_event_notifier_enabler` and all
 474  * event notifiers related to this enabler.
 475  */
 476 __attribute__((visibility("hidden")))
 477 int lttng_event_notifier_enabler_attach_exclusion(
 478                 struct lttng_event_notifier_enabler *event_notifier_enabler,
 479                 struct lttng_ust_excluder_node **excluder);
 480
 481 __attribute__((visibility("hidden")))
 482 void lttng_free_event_filter_runtime(struct lttng_ust_event_common *event);
 483
 484 /*
 485  * Connect the probe on all enablers matching this event description.
 486  * Called on library load.
 487  */
 488 __attribute__((visibility("hidden")))
 489 int lttng_fix_pending_event_notifiers(void);
 490
 491 __attribute__((visibility("hidden")))
 492 struct lttng_counter *lttng_ust_counter_create(
 493                 const char *counter_transport_name,
 494                 size_t number_dimensions, const struct lttng_counter_dimension *dimensions);
 495
 496 #ifdef HAVE_PERF_EVENT
 497
 498 __attribute__((visibility("hidden")))
 499 int lttng_add_perf_counter_to_ctx(uint32_t type,
 500                                   uint64_t config,
 501                                   const char *name,
 502                                   struct lttng_ust_ctx **ctx);
 503
 504 __attribute__((visibility("hidden")))
 505 int lttng_perf_counter_init(void);
 506
 507 __attribute__((visibility("hidden")))
 508 void lttng_perf_counter_exit(void);
 509
 510 #else /* #ifdef HAVE_PERF_EVENT */
 511
 512 static inline
 513 int lttng_add_perf_counter_to_ctx(uint32_t type,
 514                                   uint64_t config,
 515                                   const char *name,
 516                                   struct lttng_ust_ctx **ctx)
 517 {
 518         return -ENOSYS;
 519 }
 520 static inline
 521 int lttng_perf_counter_init(void)
 522 {
 523         return 0;
 524 }
 525 static inline
 526 void lttng_perf_counter_exit(void)
 527 {
 528 }
 529 #endif /* #else #ifdef HAVE_PERF_EVENT */
 530
 531 __attribute__((visibility("hidden")))
 532 int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list);
 533
 534 __attribute__((visibility("hidden")))
 535 void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list);
 536
 537 __attribute__((visibility("hidden")))
 538 int lttng_probes_get_field_list(struct lttng_ust_field_list *list);
 539
 540 __attribute__((visibility("hidden")))
 541 void lttng_probes_prune_field_list(struct lttng_ust_field_list *list);
 542
 543 __attribute__((visibility("hidden")))
 544 struct lttng_ust_abi_tracepoint_iter *
 545         lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list);
 546
 547 __attribute__((visibility("hidden")))
 548 struct lttng_ust_abi_field_iter *
 549         lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list);
 550
 551 __attribute__((visibility("hidden")))
 552 struct lttng_ust_session *lttng_session_create(void);
 553
 554 __attribute__((visibility("hidden")))
 555 int lttng_session_enable(struct lttng_ust_session *session);
 556
 557 __attribute__((visibility("hidden")))
 558 int lttng_session_disable(struct lttng_ust_session *session);
 559
 560 __attribute__((visibility("hidden")))
 561 int lttng_session_statedump(struct lttng_ust_session *session);
 562
 563 __attribute__((visibility("hidden")))
 564 void lttng_session_destroy(struct lttng_ust_session *session);
 565
 566 /*
 567  * Called with ust lock held.
 568  */
 569 __attribute__((visibility("hidden")))
 570 int lttng_session_active(void);
 571
 572 __attribute__((visibility("hidden")))
 573 struct cds_list_head *lttng_get_sessions(void);
 574
 575 __attribute__((visibility("hidden")))
 576 void lttng_handle_pending_statedump(void *owner);
 577
 578 __attribute__((visibility("hidden")))
 579 struct lttng_channel *lttng_channel_create(struct lttng_ust_session *session,
 580                                        const char *transport_name,
 581                                        void *buf_addr,
 582                                        size_t subbuf_size, size_t num_subbuf,
 583                                        unsigned int switch_timer_interval,
 584                                        unsigned int read_timer_interval,
 585                                        int **shm_fd, int **wait_fd,
 586                                        uint64_t **memory_map_size,
 587                                        struct lttng_channel *chan_priv_init);
 588
 589 __attribute__((visibility("hidden")))
 590 int lttng_channel_enable(struct lttng_channel *channel);
 591
 592 __attribute__((visibility("hidden")))
 593 int lttng_channel_disable(struct lttng_channel *channel);
 594
 595 __attribute__((visibility("hidden")))
 596 void lttng_transport_register(struct lttng_transport *transport);
 597
 598 __attribute__((visibility("hidden")))
 599 void lttng_transport_unregister(struct lttng_transport *transport);
 600
 601 /* This is ABI between liblttng-ust and liblttng-ust-ctl */
 602 struct lttng_transport *lttng_ust_transport_find(const char *name);
 603
 604 /* This is ABI between liblttng-ust and liblttng-ust-dl */
 605 void lttng_ust_dl_update(void *ip);
 606
 607 __attribute__((visibility("hidden")))
 608 void lttng_probe_provider_unregister_events(struct lttng_ust_probe_desc *desc);
 609
 610 __attribute__((visibility("hidden")))
 611 int lttng_fix_pending_events(void);
 612
 613 __attribute__((visibility("hidden")))
 614 struct cds_list_head *lttng_get_probe_list_head(void);
 615
 616 __attribute__((visibility("hidden")))
 617 struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session,
 618                 const struct lttng_ust_enum_desc *enum_desc);
 619
 620 __attribute__((visibility("hidden")))
 621 int lttng_abi_create_root_handle(void);
 622
 623 __attribute__((visibility("hidden")))
 624 const struct lttng_ust_abi_objd_ops *lttng_ust_abi_objd_ops(int id);
 625
 626 __attribute__((visibility("hidden")))
 627 int lttng_ust_abi_objd_unref(int id, int is_owner);
 628
 629 __attribute__((visibility("hidden")))
 630 void lttng_ust_abi_exit(void);
 631
 632 __attribute__((visibility("hidden")))
 633 void lttng_ust_abi_events_exit(void);
 634
 635 __attribute__((visibility("hidden")))
 636 void lttng_ust_abi_objd_table_owner_cleanup(void *owner);
 637
 638 #endif /* _LTTNG_UST_EVENTS_INTERNAL_H */