From: Michael Jeanson Date: Sat, 3 Apr 2021 00:22:42 +0000 (-0400) Subject: Split ust-events-internal.h between common and liblttng-ust X-Git-Tag: v2.13.0-rc1~120 X-Git-Url: http://git.liburcu.org/?a=commitdiff_plain;h=36c52fffa1beb46c7c15bb6ac4a4179cae373b98;p=lttng-ust.git Split ust-events-internal.h between common and liblttng-ust Split ust-events-internal.h into a common private header containing the types and ABI functions and a header internal to liblttng-ust containing the declaration of the private symbols. Change-Id: I8ec2a5c8aad9ba85557b5a727ffc3615172e375d Signed-off-by: Michael Jeanson Signed-off-by: Mathieu Desnoyers --- diff --git a/src/common/Makefile.am b/src/common/Makefile.am index e75ee250..e450f8c8 100644 --- a/src/common/Makefile.am +++ b/src/common/Makefile.am @@ -13,6 +13,7 @@ noinst_HEADERS = \ clock.h \ dynamic-type.h \ elf.h \ + events.h \ logging.h \ macros.h \ patient.h \ diff --git a/src/common/events.h b/src/common/events.h new file mode 100644 index 00000000..b3e11bb3 --- /dev/null +++ b/src/common/events.h @@ -0,0 +1,581 @@ +/* + * SPDX-License-Identifier: MIT + * + * Copyright 2019 (c) Francis Deslauriers + */ + +#ifndef _UST_COMMON_UST_EVENTS_H +#define _UST_COMMON_UST_EVENTS_H + +#include +#include + +#include +#include + +#include + +#include "common/macros.h" +#include "common/ust-context-provider.h" + +struct lttng_ust_abi_obj; +struct lttng_event_notifier_group; + +union lttng_ust_abi_args { + struct { + void *chan_data; + int wakeup_fd; + } channel; + struct { + int shm_fd; + int wakeup_fd; + } stream; + struct { + struct lttng_ust_abi_field_iter entry; + } field_list; + struct { + char *ctxname; + } app_context; + struct { + int event_notifier_notif_fd; + } event_notifier_handle; + struct { + void *counter_data; + } counter; + struct { + int shm_fd; + } counter_shm; +}; + +struct lttng_ust_abi_objd_ops { + long (*cmd)(int objd, unsigned int cmd, unsigned long arg, + union lttng_ust_abi_args *args, void *owner); + int (*release)(int objd); +}; + +enum lttng_enabler_format_type { + LTTNG_ENABLER_FORMAT_STAR_GLOB, + LTTNG_ENABLER_FORMAT_EVENT, +}; + +/* + * Enabler field, within whatever object is enabling an event. Target of + * backward reference. + */ +struct lttng_enabler { + enum lttng_enabler_format_type format_type; + + /* head list of struct lttng_ust_filter_bytecode_node */ + struct cds_list_head filter_bytecode_head; + /* head list of struct lttng_ust_excluder_node */ + struct cds_list_head excluder_head; + + struct lttng_ust_abi_event event_param; + unsigned int enabled:1; +}; + +struct lttng_event_enabler { + struct lttng_enabler base; + struct cds_list_head node; /* per-session list of enablers */ + struct lttng_ust_channel_buffer *chan; + /* + * Unused, but kept around to make it explicit that the tracer can do + * it. + */ + struct lttng_ust_ctx *ctx; +}; + +struct lttng_event_notifier_enabler { + struct lttng_enabler base; + uint64_t error_counter_index; + struct cds_list_head node; /* per-app list of event_notifier enablers */ + struct cds_list_head capture_bytecode_head; + struct lttng_event_notifier_group *group; /* weak ref */ + uint64_t user_token; /* User-provided token */ + uint64_t num_captures; +}; + +enum lttng_ust_bytecode_type { + LTTNG_UST_BYTECODE_TYPE_FILTER, + LTTNG_UST_BYTECODE_TYPE_CAPTURE, +}; + +struct lttng_ust_bytecode_node { + enum lttng_ust_bytecode_type type; + struct cds_list_head node; + struct lttng_enabler *enabler; + struct { + uint32_t len; + uint32_t reloc_offset; + uint64_t seqnum; + char data[]; + } bc; +}; + +/* + * Bytecode interpreter return value. + */ +enum lttng_ust_bytecode_interpreter_ret { + LTTNG_UST_BYTECODE_INTERPRETER_ERROR = -1, + LTTNG_UST_BYTECODE_INTERPRETER_OK = 0, +}; + +struct lttng_interpreter_output; +struct lttng_ust_bytecode_runtime_private; + +enum lttng_ust_bytecode_filter_result { + LTTNG_UST_BYTECODE_FILTER_ACCEPT = 0, + LTTNG_UST_BYTECODE_FILTER_REJECT = 1, +}; + +struct lttng_ust_bytecode_filter_ctx { + enum lttng_ust_bytecode_filter_result result; +}; + +struct lttng_ust_excluder_node { + struct cds_list_head node; + struct lttng_enabler *enabler; + /* + * struct lttng_ust_event_exclusion had variable sized array, + * must be last field. + */ + struct lttng_ust_abi_event_exclusion excluder; +}; + +/* Data structures used by the tracer. */ + +struct tp_list_entry { + struct lttng_ust_abi_tracepoint_iter tp; + struct cds_list_head head; +}; + +struct lttng_ust_tracepoint_list { + struct tp_list_entry *iter; + struct cds_list_head head; +}; + +struct tp_field_list_entry { + struct lttng_ust_abi_field_iter field; + struct cds_list_head head; +}; + +struct lttng_ust_field_list { + struct tp_field_list_entry *iter; + struct cds_list_head head; +}; + +/* + * Objects in a linked-list of enablers, owned by an event or event_notifier. + * This is used because an event (or a event_notifier) can be enabled by more + * than one enabler and we want a quick way to iterate over all enablers of an + * object. + * + * For example, event rules "my_app:a*" and "my_app:ab*" will both match the + * event with the name "my_app:abc". + */ +struct lttng_enabler_ref { + struct cds_list_head node; /* enabler ref list */ + struct lttng_enabler *ref; /* backward ref */ +}; + +#define LTTNG_COUNTER_DIMENSION_MAX 8 +struct lttng_counter_dimension { + uint64_t size; + uint64_t underflow_index; + uint64_t overflow_index; + uint8_t has_underflow; + uint8_t has_overflow; +}; + +struct lttng_counter_ops { + struct lib_counter *(*counter_create)(size_t nr_dimensions, + const struct lttng_counter_dimension *dimensions, + int64_t global_sum_step, + int global_counter_fd, + int nr_counter_cpu_fds, + const int *counter_cpu_fds, + bool is_daemon); + void (*counter_destroy)(struct lib_counter *counter); + int (*counter_add)(struct lib_counter *counter, + const size_t *dimension_indexes, int64_t v); + int (*counter_read)(struct lib_counter *counter, + const size_t *dimension_indexes, int cpu, + int64_t *value, bool *overflow, bool *underflow); + int (*counter_aggregate)(struct lib_counter *counter, + const size_t *dimension_indexes, int64_t *value, + bool *overflow, bool *underflow); + int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); +}; + +struct lttng_counter { + int objd; + struct lttng_event_notifier_group *event_notifier_group; /* owner */ + struct lttng_counter_transport *transport; + struct lib_counter *counter; + struct lttng_counter_ops *ops; +}; + +#define LTTNG_UST_EVENT_HT_BITS 12 +#define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS) + +struct lttng_ust_event_ht { + struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE]; +}; + +#define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12 +#define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS) +struct lttng_ust_event_notifier_ht { + struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE]; +}; + +#define LTTNG_UST_ENUM_HT_BITS 12 +#define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS) + +struct lttng_ust_enum_ht { + struct cds_hlist_head table[LTTNG_UST_ENUM_HT_SIZE]; +}; + +struct lttng_event_notifier_group { + int objd; + void *owner; + int notification_fd; + struct cds_list_head node; /* Event notifier group handle list */ + struct cds_list_head enablers_head; + struct cds_list_head event_notifiers_head; /* list of event_notifiers */ + struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */ + struct lttng_ust_ctx *ctx; /* contexts for filters. */ + + struct lttng_counter *error_counter; + size_t error_counter_len; +}; + +struct lttng_transport { + const char *name; + struct cds_list_head node; + struct lttng_ust_channel_buffer_ops ops; + const struct lttng_ust_lib_ring_buffer_config *client_config; +}; + +struct lttng_counter_transport { + const char *name; + struct cds_list_head node; + struct lttng_counter_ops ops; + const struct lib_counter_config *client_config; +}; + +struct lttng_ust_event_common_private { + struct lttng_ust_event_common *pub; /* Public event interface */ + + const struct lttng_ust_event_desc *desc; + /* Backward references: list of lttng_enabler_ref (ref to enablers) */ + struct cds_list_head enablers_ref_head; + int registered; /* has reg'd tracepoint probe */ + uint64_t user_token; + + int has_enablers_without_filter_bytecode; + /* list of struct lttng_ust_bytecode_runtime, sorted by seqnum */ + struct cds_list_head filter_bytecode_runtime_head; +}; + +struct lttng_ust_event_recorder_private { + struct lttng_ust_event_common_private parent; + + struct lttng_ust_event_recorder *pub; /* Public event interface */ + struct cds_list_head node; /* Event recorder list */ + struct cds_hlist_node hlist; /* Hash table of event recorders */ + struct lttng_ust_ctx *ctx; + unsigned int id; +}; + +struct lttng_ust_event_notifier_private { + struct lttng_ust_event_common_private parent; + + struct lttng_ust_event_notifier *pub; /* Public event notifier interface */ + struct lttng_event_notifier_group *group; /* weak ref */ + size_t num_captures; /* Needed to allocate the msgpack array. */ + uint64_t error_counter_index; + struct cds_list_head node; /* Event notifier list */ + struct cds_hlist_node hlist; /* Hash table of event notifiers */ + struct cds_list_head capture_bytecode_runtime_head; +}; + +struct lttng_ust_bytecode_runtime { + enum lttng_ust_bytecode_type type; + struct lttng_ust_bytecode_node *bc; + int link_failed; + int (*interpreter_func)(struct lttng_ust_bytecode_runtime *bytecode_runtime, + const char *interpreter_stack_data, + void *ctx); + struct cds_list_head node; /* list of bytecode runtime in event */ + /* + * Pointer to a URCU-protected pointer owned by an `struct + * lttng_session`or `struct lttng_event_notifier_group`. + */ + struct lttng_ust_ctx **pctx; +}; + +struct lttng_ust_session_private { + struct lttng_ust_session *pub; /* Public session interface */ + + int been_active; /* Been active ? */ + int objd; /* Object associated */ + struct cds_list_head chan_head; /* Channel list head */ + struct cds_list_head events_head; /* list of events */ + struct cds_list_head node; /* Session list */ + + /* List of enablers */ + struct cds_list_head enablers_head; + struct lttng_ust_event_ht events_ht; /* ht of events */ + void *owner; /* object owner */ + int tstate:1; /* Transient enable state */ + + int statedump_pending:1; + + struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */ + struct cds_list_head enums_head; + struct lttng_ust_ctx *ctx; /* contexts for filters. */ + + unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ + bool uuid_set; /* Is uuid set ? */ +}; + +struct lttng_enum { + const struct lttng_ust_enum_desc *desc; + struct lttng_ust_session *session; + struct cds_list_head node; /* Enum list in session */ + struct cds_hlist_node hlist; /* Session ht of enums */ + uint64_t id; /* Enumeration ID in sessiond */ +}; + +struct lttng_ust_shm_handle; + +struct lttng_ust_channel_buffer_ops_private { + struct lttng_ust_channel_buffer_ops *pub; /* Public channel buffer ops interface */ + + struct lttng_ust_channel_buffer *(*channel_create)(const char *name, + void *buf_addr, + size_t subbuf_size, size_t num_subbuf, + unsigned int switch_timer_interval, + unsigned int read_timer_interval, + unsigned char *uuid, + uint32_t chan_id, + const int *stream_fds, int nr_stream_fds, + int64_t blocking_timeout); + void (*channel_destroy)(struct lttng_ust_channel_buffer *chan); + /* + * packet_avail_size returns the available size in the current + * packet. Note that the size returned is only a hint, since it + * may change due to concurrent writes. + */ + size_t (*packet_avail_size)(struct lttng_ust_channel_buffer *chan); + int (*is_finalized)(struct lttng_ust_channel_buffer *chan); + int (*is_disabled)(struct lttng_ust_channel_buffer *chan); + int (*flush_buffer)(struct lttng_ust_channel_buffer *chan); +}; + +struct lttng_ust_channel_common_private { + struct lttng_ust_channel_common *pub; /* Public channel interface */ + + int objd; /* Object associated with channel. */ + int tstate:1; /* Transient enable state */ +}; + +struct lttng_ust_channel_buffer_private { + struct lttng_ust_channel_common_private parent; + + struct lttng_ust_channel_buffer *pub; /* Public channel buffer interface */ + struct cds_list_head node; /* Channel list in session */ + int header_type; /* 0: unset, 1: compact, 2: large */ + unsigned int id; /* Channel ID */ + enum lttng_ust_abi_chan_type type; + struct lttng_ust_ctx *ctx; + struct lttng_ust_lib_ring_buffer_channel *rb_chan; /* Ring buffer channel */ + unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ +}; + +/* + * IMPORTANT: this structure is part of the ABI between the consumer + * daemon and the UST library within traced applications. Changing it + * breaks the UST communication protocol. + * + * TODO: remove unused fields on next UST communication protocol + * breaking update. + */ +struct lttng_ust_abi_channel_config { + void *unused1; + int unused2; + void *unused3; + void *unused4; + int unused5; + struct cds_list_head unused6; + void *unused7; + int unused8; + void *unused9; + + /* Channel ID */ + unsigned int id; + enum lttng_ust_abi_chan_type unused10; + unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ + int unused11:1; +}; + +/* Global (filter), event and channel contexts. */ +struct lttng_ust_ctx { + struct lttng_ust_ctx_field *fields; + unsigned int nr_fields; + unsigned int allocated_fields; + unsigned int largest_align; +}; + +struct lttng_ust_registered_probe { + const struct lttng_ust_probe_desc *desc; + + struct cds_list_head head; /* chain registered probes */ + struct cds_list_head lazy_init_head; + int lazy; /* lazy registration */ +}; + +/* + * Context field + */ + +struct lttng_ust_ctx_field { + const struct lttng_ust_event_field *event_field; + size_t (*get_size)(void *priv, size_t offset); + void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx, + struct lttng_ust_channel_buffer *chan); + void (*get_value)(void *priv, struct lttng_ust_ctx_value *value); + void (*destroy)(void *priv); + void *priv; +}; + +static inline +const struct lttng_ust_type_integer *lttng_ust_get_type_integer(const struct lttng_ust_type_common *type) +{ + if (type->type != lttng_ust_type_integer) + return NULL; + return caa_container_of(type, const struct lttng_ust_type_integer, parent); +} + +static inline +const struct lttng_ust_type_float *lttng_ust_get_type_float(const struct lttng_ust_type_common *type) +{ + if (type->type != lttng_ust_type_float) + return NULL; + return caa_container_of(type, const struct lttng_ust_type_float, parent); +} + +static inline +const struct lttng_ust_type_string *lttng_ust_get_type_string(const struct lttng_ust_type_common *type) +{ + if (type->type != lttng_ust_type_string) + return NULL; + return caa_container_of(type, const struct lttng_ust_type_string, parent); +} + +static inline +const struct lttng_ust_type_enum *lttng_ust_get_type_enum(const struct lttng_ust_type_common *type) +{ + if (type->type != lttng_ust_type_enum) + return NULL; + return caa_container_of(type, const struct lttng_ust_type_enum, parent); +} + +static inline +const struct lttng_ust_type_array *lttng_ust_get_type_array(const struct lttng_ust_type_common *type) +{ + if (type->type != lttng_ust_type_array) + return NULL; + return caa_container_of(type, const struct lttng_ust_type_array, parent); +} + +static inline +const struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(const struct lttng_ust_type_common *type) +{ + if (type->type != lttng_ust_type_sequence) + return NULL; + return caa_container_of(type, const struct lttng_ust_type_sequence, parent); +} + +static inline +const struct lttng_ust_type_struct *lttng_ust_get_type_struct(const struct lttng_ust_type_common *type) +{ + if (type->type != lttng_ust_type_struct) + return NULL; + return caa_container_of(type, const struct lttng_ust_type_struct, parent); +} + +#define lttng_ust_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \ + ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_integer, { \ + .parent = { \ + .type = lttng_ust_type_integer, \ + }, \ + .struct_size = sizeof(struct lttng_ust_type_integer), \ + .size = (_size), \ + .alignment = (_alignment), \ + .signedness = (_signedness), \ + .reverse_byte_order = (_byte_order) != BYTE_ORDER, \ + .base = (_base), \ + })) + +#define lttng_ust_static_type_array_text(_length) \ + ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_array, { \ + .parent = { \ + .type = lttng_ust_type_array, \ + }, \ + .struct_size = sizeof(struct lttng_ust_type_array), \ + .length = (_length), \ + .alignment = 0, \ + .encoding = lttng_ust_string_encoding_UTF8, \ + .elem_type = lttng_ust_static_type_integer(sizeof(char) * CHAR_BIT, \ + lttng_ust_rb_alignof(char) * CHAR_BIT, lttng_ust_is_signed_type(char), \ + BYTE_ORDER, 10), \ + })) + +#define lttng_ust_static_event_field(_name, _type, _nowrite, _nofilter) \ + __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \ + .struct_size = sizeof(struct lttng_ust_event_field), \ + .name = (_name), \ + .type = (_type), \ + .nowrite = (_nowrite), \ + .nofilter = (_nofilter), \ + }) + +#define lttng_ust_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \ + __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_ctx_field, { \ + .event_field = (_event_field), \ + .get_size = (_get_size), \ + .record = (_record), \ + .get_value = (_get_value), \ + .destroy = (_destroy), \ + .priv = (_priv), \ + }) + +static inline +struct lttng_enabler *lttng_event_enabler_as_enabler( + struct lttng_event_enabler *event_enabler) +{ + return &event_enabler->base; +} + +static inline +struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( + struct lttng_event_notifier_enabler *event_notifier_enabler) +{ + return &event_notifier_enabler->base; +} + + + +/* This is ABI between liblttng-ust and liblttng-ust-ctl */ +struct lttng_transport *lttng_ust_transport_find(const char *name); + +/* This is ABI between liblttng-ust and liblttng-ust-dl */ +void lttng_ust_dl_update(void *ip); + +struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session, + const struct lttng_ust_enum_desc *enum_desc) + __attribute__((visibility("hidden"))); + + +#endif /* _UST_COMMON_UST_EVENTS_H */ diff --git a/src/common/ustcomm.c b/src/common/ustcomm.c index d6588992..80346ce1 100644 --- a/src/common/ustcomm.c +++ b/src/common/ustcomm.c @@ -27,7 +27,7 @@ #include "common/dynamic-type.h" #include "common/logging.h" -#include "lib/lttng-ust/ust-events-internal.h" +#include "common/events.h" #include "common/compat/pthread.h" #define USTCOMM_CODE_OFFSET(code) \ diff --git a/src/lib/lttng-ust-ctl/ustctl.c b/src/lib/lttng-ust-ctl/ustctl.c index 96107fe7..7c169fe1 100644 --- a/src/lib/lttng-ust-ctl/ustctl.c +++ b/src/lib/lttng-ust-ctl/ustctl.c @@ -24,7 +24,7 @@ #include "common/ringbuffer/backend.h" #include "common/ringbuffer/frontend.h" -#include "lib/lttng-ust/ust-events-internal.h" +#include "common/events.h" #include "common/wait.h" #include "lib/lttng-ust/lttng-rb-clients.h" #include "common/clock.h" diff --git a/src/lib/lttng-ust-dl/lttng-ust-dl.c b/src/lib/lttng-ust-dl/lttng-ust-dl.c index 42e8ec3c..2b767e47 100644 --- a/src/lib/lttng-ust-dl/lttng-ust-dl.c +++ b/src/lib/lttng-ust-dl/lttng-ust-dl.c @@ -21,8 +21,7 @@ #include #include "common/macros.h" #include "common/logging.h" - -#include "lib/lttng-ust/ust-events-internal.h" +#include "common/events.h" /* Include link.h last else it conflicts with ust-dlfcn. */ #include diff --git a/src/lib/lttng-ust/Makefile.am b/src/lib/lttng-ust/Makefile.am index 51a18352..77c91067 100644 --- a/src/lib/lttng-ust/Makefile.am +++ b/src/lib/lttng-ust/Makefile.am @@ -78,7 +78,7 @@ liblttng_ust_runtime_la_SOURCES = \ context-internal.h \ context-provider-internal.h \ tracepoint-internal.h \ - ust-events-internal.h \ + events.h \ clock.h \ jhash.h \ lttng-ust-uuid.h \ diff --git a/src/lib/lttng-ust/context-internal.h b/src/lib/lttng-ust/context-internal.h index 87e3bbf5..874b6d73 100644 --- a/src/lib/lttng-ust/context-internal.h +++ b/src/lib/lttng-ust/context-internal.h @@ -8,7 +8,7 @@ #define _LTTNG_UST_CONTEXT_INTERNAL_H #include -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "common/ust-context-provider.h" int lttng_context_init_all(struct lttng_ust_ctx **ctx) diff --git a/src/lib/lttng-ust/event-notifier-notification.c b/src/lib/lttng-ust/event-notifier-notification.c index 32886fdb..4cfd1b15 100644 --- a/src/lib/lttng-ust/event-notifier-notification.c +++ b/src/lib/lttng-ust/event-notifier-notification.c @@ -15,7 +15,7 @@ #include #include "lttng-tracer-core.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "common/msgpack/msgpack.h" #include "lttng-bytecode.h" #include "common/patient.h" diff --git a/src/lib/lttng-ust/events.h b/src/lib/lttng-ust/events.h new file mode 100644 index 00000000..9e28b4c3 --- /dev/null +++ b/src/lib/lttng-ust/events.h @@ -0,0 +1,339 @@ +/* + * SPDX-License-Identifier: MIT + * + * Copyright 2019 (c) Francis Deslauriers + */ + +#ifndef _LTTNG_UST_EVENTS_INTERNAL_H +#define _LTTNG_UST_EVENTS_INTERNAL_H + +#include "common/events.h" + +/* + * Allocate and initialize a `struct lttng_event_enabler` object. + * + * On success, returns a `struct lttng_event_enabler`, + * On memory error, returns NULL. + */ +struct lttng_event_enabler *lttng_event_enabler_create( + enum lttng_enabler_format_type format_type, + struct lttng_ust_abi_event *event_param, + struct lttng_ust_channel_buffer *chan) + __attribute__((visibility("hidden"))); + +/* + * Destroy a `struct lttng_event_enabler` object. + */ +void lttng_event_enabler_destroy(struct lttng_event_enabler *enabler) + __attribute__((visibility("hidden"))); + +/* + * Enable a `struct lttng_event_enabler` object and all events related to this + * enabler. + */ +int lttng_event_enabler_enable(struct lttng_event_enabler *enabler) + __attribute__((visibility("hidden"))); + +/* + * Disable a `struct lttng_event_enabler` object and all events related to this + * enabler. + */ +int lttng_event_enabler_disable(struct lttng_event_enabler *enabler) + __attribute__((visibility("hidden"))); + +/* + * Attach filter bytecode program to `struct lttng_event_enabler` and all + * events related to this enabler. + */ +int lttng_event_enabler_attach_filter_bytecode( + struct lttng_event_enabler *enabler, + struct lttng_ust_bytecode_node **bytecode) + __attribute__((visibility("hidden"))); + +/* + * Attach an application context to an event enabler. + * + * Not implemented. + */ +int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler, + struct lttng_ust_abi_context *ctx) + __attribute__((visibility("hidden"))); + +/* + * Attach exclusion list to `struct lttng_event_enabler` and all + * events related to this enabler. + */ +int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler, + struct lttng_ust_excluder_node **excluder) + __attribute__((visibility("hidden"))); + +/* + * Synchronize bytecodes for the enabler and the instance (event or + * event_notifier). + * + * This function goes over all bytecode programs of the enabler (event or + * event_notifier enabler) to ensure each is linked to the provided instance. + */ +void lttng_enabler_link_bytecode(const struct lttng_ust_event_desc *event_desc, + struct lttng_ust_ctx **ctx, + struct cds_list_head *instance_bytecode_runtime_head, + struct cds_list_head *enabler_bytecode_runtime_head) + __attribute__((visibility("hidden"))); + +/* + * Allocate and initialize a `struct lttng_event_notifier_group` object. + * + * On success, returns a `struct lttng_triggre_group`, + * on memory error, returns NULL. + */ +struct lttng_event_notifier_group *lttng_event_notifier_group_create(void) + __attribute__((visibility("hidden"))); + +/* + * Destroy a `struct lttng_event_notifier_group` object. + */ +void lttng_event_notifier_group_destroy( + struct lttng_event_notifier_group *event_notifier_group) + __attribute__((visibility("hidden"))); + +/* + * Allocate and initialize a `struct lttng_event_notifier_enabler` object. + * + * On success, returns a `struct lttng_event_notifier_enabler`, + * On memory error, returns NULL. + */ +struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( + struct lttng_event_notifier_group *event_notifier_group, + enum lttng_enabler_format_type format_type, + struct lttng_ust_abi_event_notifier *event_notifier_param) + __attribute__((visibility("hidden"))); + +/* + * Destroy a `struct lttng_event_notifier_enabler` object. + */ +void lttng_event_notifier_enabler_destroy( + struct lttng_event_notifier_enabler *event_notifier_enabler) + __attribute__((visibility("hidden"))); + +/* + * Enable a `struct lttng_event_notifier_enabler` object and all event + * notifiers related to this enabler. + */ +int lttng_event_notifier_enabler_enable( + struct lttng_event_notifier_enabler *event_notifier_enabler) + __attribute__((visibility("hidden"))); + +/* + * Disable a `struct lttng_event_notifier_enabler` object and all event + * notifiers related to this enabler. + */ +int lttng_event_notifier_enabler_disable( + struct lttng_event_notifier_enabler *event_notifier_enabler) + __attribute__((visibility("hidden"))); + +/* + * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and + * all event notifiers related to this enabler. + */ +int lttng_event_notifier_enabler_attach_filter_bytecode( + struct lttng_event_notifier_enabler *event_notifier_enabler, + struct lttng_ust_bytecode_node **bytecode) + __attribute__((visibility("hidden"))); + +/* + * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and + * all event_notifiers related to this enabler. + */ +int lttng_event_notifier_enabler_attach_capture_bytecode( + struct lttng_event_notifier_enabler *event_notifier_enabler, + struct lttng_ust_bytecode_node **bytecode) + __attribute__((visibility("hidden"))); + +/* + * Attach exclusion list to `struct lttng_event_notifier_enabler` and all + * event notifiers related to this enabler. + */ +int lttng_event_notifier_enabler_attach_exclusion( + struct lttng_event_notifier_enabler *event_notifier_enabler, + struct lttng_ust_excluder_node **excluder) + __attribute__((visibility("hidden"))); + +void lttng_free_event_filter_runtime(struct lttng_ust_event_common *event) + __attribute__((visibility("hidden"))); + +/* + * Connect the probe on all enablers matching this event description. + * Called on library load. + */ +int lttng_fix_pending_event_notifiers(void) + __attribute__((visibility("hidden"))); + +struct lttng_counter *lttng_ust_counter_create( + const char *counter_transport_name, + size_t number_dimensions, const struct lttng_counter_dimension *dimensions) + __attribute__((visibility("hidden"))); + +#ifdef HAVE_LINUX_PERF_EVENT_H + +int lttng_add_perf_counter_to_ctx(uint32_t type, + uint64_t config, + const char *name, + struct lttng_ust_ctx **ctx) + __attribute__((visibility("hidden"))); + +int lttng_perf_counter_init(void) + __attribute__((visibility("hidden"))); + +void lttng_perf_counter_exit(void) + __attribute__((visibility("hidden"))); + +#else /* #ifdef HAVE_LINUX_PERF_EVENT_H */ + +static inline +int lttng_add_perf_counter_to_ctx(uint32_t type, + uint64_t config, + const char *name, + struct lttng_ust_ctx **ctx) +{ + return -ENOSYS; +} +static inline +int lttng_perf_counter_init(void) +{ + return 0; +} +static inline +void lttng_perf_counter_exit(void) +{ +} +#endif /* #else #ifdef HAVE_LINUX_PERF_EVENT_H */ + +int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list) + __attribute__((visibility("hidden"))); + +void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list) + __attribute__((visibility("hidden"))); + +int lttng_probes_get_field_list(struct lttng_ust_field_list *list) + __attribute__((visibility("hidden"))); + +void lttng_probes_prune_field_list(struct lttng_ust_field_list *list) + __attribute__((visibility("hidden"))); + +struct lttng_ust_abi_tracepoint_iter * + lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list) + __attribute__((visibility("hidden"))); + +struct lttng_ust_abi_field_iter * + lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list) + __attribute__((visibility("hidden"))); + +struct lttng_ust_session *lttng_session_create(void) + __attribute__((visibility("hidden"))); + +int lttng_session_enable(struct lttng_ust_session *session) + __attribute__((visibility("hidden"))); + +int lttng_session_disable(struct lttng_ust_session *session) + __attribute__((visibility("hidden"))); + +int lttng_session_statedump(struct lttng_ust_session *session) + __attribute__((visibility("hidden"))); + +void lttng_session_destroy(struct lttng_ust_session *session) + __attribute__((visibility("hidden"))); + +/* + * Called with ust lock held. + */ +int lttng_session_active(void) + __attribute__((visibility("hidden"))); + +struct cds_list_head *lttng_get_sessions(void) + __attribute__((visibility("hidden"))); + +void lttng_handle_pending_statedump(void *owner) + __attribute__((visibility("hidden"))); + +int lttng_channel_enable(struct lttng_ust_channel_common *lttng_channel) + __attribute__((visibility("hidden"))); + +int lttng_channel_disable(struct lttng_ust_channel_common *lttng_channel) + __attribute__((visibility("hidden"))); + +void lttng_transport_register(struct lttng_transport *transport) + __attribute__((visibility("hidden"))); + +void lttng_transport_unregister(struct lttng_transport *transport) + __attribute__((visibility("hidden"))); + +void lttng_probe_provider_unregister_events(const struct lttng_ust_probe_desc *desc) + __attribute__((visibility("hidden"))); + +int lttng_fix_pending_events(void) + __attribute__((visibility("hidden"))); + +struct cds_list_head *lttng_get_probe_list_head(void) + __attribute__((visibility("hidden"))); + +int lttng_abi_create_root_handle(void) + __attribute__((visibility("hidden"))); + +const struct lttng_ust_abi_objd_ops *lttng_ust_abi_objd_ops(int id) + __attribute__((visibility("hidden"))); + +int lttng_ust_abi_objd_unref(int id, int is_owner) + __attribute__((visibility("hidden"))); + +void lttng_ust_abi_exit(void) + __attribute__((visibility("hidden"))); + +void lttng_ust_abi_events_exit(void) + __attribute__((visibility("hidden"))); + +void lttng_ust_abi_objd_table_owner_cleanup(void *owner) + __attribute__((visibility("hidden"))); + +struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void) + __attribute__((visibility("hidden"))); + +void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan) + __attribute__((visibility("hidden"))); + +int lttng_ust_interpret_event_filter(struct lttng_ust_event_common *event, + const char *interpreter_stack_data, + void *filter_ctx) + __attribute__((visibility("hidden"))); + +int lttng_ust_session_uuid_validate(struct lttng_ust_session *session, + unsigned char *uuid) + __attribute__((visibility("hidden"))); + +bool lttng_ust_validate_event_name(const struct lttng_ust_event_desc *desc) + __attribute__((visibility("hidden"))); + +void lttng_ust_format_event_name(const struct lttng_ust_event_desc *desc, + char *name) + __attribute__((visibility("hidden"))); + +int lttng_ust_add_app_context_to_ctx_rcu(const char *name, struct lttng_ust_ctx **ctx) + __attribute__((visibility("hidden"))); + +int lttng_ust_context_set_provider_rcu(struct lttng_ust_ctx **_ctx, + const char *name, + size_t (*get_size)(void *priv, size_t offset), + void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx, + struct lttng_ust_channel_buffer *chan), + void (*get_value)(void *priv, struct lttng_ust_ctx_value *value), + void *priv) + __attribute__((visibility("hidden"))); + +void lttng_ust_context_set_session_provider(const char *name, + size_t (*get_size)(void *priv, size_t offset), + void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx, + struct lttng_ust_channel_buffer *chan), + void (*get_value)(void *priv, struct lttng_ust_ctx_value *value), + void *priv) + __attribute__((visibility("hidden"))); + +#endif /* _LTTNG_UST_EVENTS_INTERNAL_H */ diff --git a/src/lib/lttng-ust/lttng-bytecode-interpreter.c b/src/lib/lttng-ust/lttng-bytecode-interpreter.c index cb128a69..c5f75629 100644 --- a/src/lib/lttng-ust/lttng-bytecode-interpreter.c +++ b/src/lib/lttng-ust/lttng-bytecode-interpreter.c @@ -14,7 +14,7 @@ #include #include #include -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "lttng-bytecode.h" #include "string-utils.h" diff --git a/src/lib/lttng-ust/lttng-bytecode-specialize.c b/src/lib/lttng-ust/lttng-bytecode-specialize.c index 3d7b5c2a..bf7af5d5 100644 --- a/src/lib/lttng-ust/lttng-bytecode-specialize.c +++ b/src/lib/lttng-ust/lttng-bytecode-specialize.c @@ -15,7 +15,7 @@ #include "context-internal.h" #include "lttng-bytecode.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "common/macros.h" static int lttng_fls(int val) diff --git a/src/lib/lttng-ust/lttng-bytecode-validator.c b/src/lib/lttng-ust/lttng-bytecode-validator.c index 91c4cace..34657d00 100644 --- a/src/lib/lttng-ust/lttng-bytecode-validator.c +++ b/src/lib/lttng-ust/lttng-bytecode-validator.c @@ -16,7 +16,7 @@ #include "lttng-bytecode.h" #include "lttng-hash-helper.h" #include "string-utils.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "common/macros.h" /* diff --git a/src/lib/lttng-ust/lttng-bytecode.c b/src/lib/lttng-ust/lttng-bytecode.c index 68108192..8d3971bf 100644 --- a/src/lib/lttng-ust/lttng-bytecode.c +++ b/src/lib/lttng-ust/lttng-bytecode.c @@ -14,7 +14,7 @@ #include "context-internal.h" #include "lttng-bytecode.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "common/macros.h" static const char *opnames[] = { diff --git a/src/lib/lttng-ust/lttng-bytecode.h b/src/lib/lttng-ust/lttng-bytecode.h index a72369e1..46f72120 100644 --- a/src/lib/lttng-ust/lttng-bytecode.h +++ b/src/lib/lttng-ust/lttng-bytecode.h @@ -23,7 +23,7 @@ #include #include "common/logging.h" #include "bytecode.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" /* Interpreter stack length, in number of entries */ #define INTERPRETER_STACK_LEN 10 /* includes 2 dummy */ diff --git a/src/lib/lttng-ust/lttng-context-perf-counters.c b/src/lib/lttng-ust/lttng-context-perf-counters.c index 5f5b5cbf..2f145220 100644 --- a/src/lib/lttng-ust/lttng-context-perf-counters.c +++ b/src/lib/lttng-ust/lttng-context-perf-counters.c @@ -34,7 +34,7 @@ #include "context-internal.h" #include "lttng-tracer-core.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" /* * We use a global perf counter key and iterate on per-thread RCU lists diff --git a/src/lib/lttng-ust/lttng-counter-client-percpu-32-modular.c b/src/lib/lttng-ust/lttng-counter-client-percpu-32-modular.c index df087c4d..0f9f5fe4 100644 --- a/src/lib/lttng-ust/lttng-counter-client-percpu-32-modular.c +++ b/src/lib/lttng-ust/lttng-counter-client-percpu-32-modular.c @@ -8,7 +8,7 @@ * Copyright (C) 2020 Mathieu Desnoyers */ -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "common/counter/counter.h" #include "common/counter/counter-api.h" #include "lttng-tracer-core.h" diff --git a/src/lib/lttng-ust/lttng-counter-client-percpu-64-modular.c b/src/lib/lttng-ust/lttng-counter-client-percpu-64-modular.c index 021146e6..62ddfe5d 100644 --- a/src/lib/lttng-ust/lttng-counter-client-percpu-64-modular.c +++ b/src/lib/lttng-ust/lttng-counter-client-percpu-64-modular.c @@ -8,7 +8,7 @@ * Copyright (C) 2020 Mathieu Desnoyers */ -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "common/counter/counter.h" #include "common/counter/counter-api.h" #include "lttng-tracer-core.h" diff --git a/src/lib/lttng-ust/lttng-events.c b/src/lib/lttng-ust/lttng-events.c index d5e08849..13becb91 100644 --- a/src/lib/lttng-ust/lttng-events.c +++ b/src/lib/lttng-ust/lttng-events.c @@ -49,7 +49,7 @@ #include "lttng-tracer-core.h" #include "lttng-ust-statedump.h" #include "context-internal.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "wait.h" #include "common/ringbuffer/shm.h" #include "common/ringbuffer/frontend_types.h" diff --git a/src/lib/lttng-ust/lttng-probes.c b/src/lib/lttng-ust/lttng-probes.c index 553770ea..2dff30f4 100644 --- a/src/lib/lttng-ust/lttng-probes.c +++ b/src/lib/lttng-ust/lttng-probes.c @@ -21,7 +21,7 @@ #include "lttng-tracer-core.h" #include "jhash.h" #include "error.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" /* * probe list is protected by ust_lock()/ust_unlock(). diff --git a/src/lib/lttng-ust/lttng-ring-buffer-client-template.h b/src/lib/lttng-ust/lttng-ring-buffer-client-template.h index 880ae94c..fea1774f 100644 --- a/src/lib/lttng-ust/lttng-ring-buffer-client-template.h +++ b/src/lib/lttng-ust/lttng-ring-buffer-client-template.h @@ -10,7 +10,7 @@ #include #include -#include +#include "lib/lttng-ust/events.h" #include #include "common/bitfield.h" #include "common/align.h" diff --git a/src/lib/lttng-ust/lttng-ring-buffer-metadata-client-template.h b/src/lib/lttng-ust/lttng-ring-buffer-metadata-client-template.h index 954fc020..a2ea1b02 100644 --- a/src/lib/lttng-ust/lttng-ring-buffer-metadata-client-template.h +++ b/src/lib/lttng-ust/lttng-ring-buffer-metadata-client-template.h @@ -10,7 +10,7 @@ #include #include -#include +#include "lib/lttng-ust/events.h" #include "common/bitfield.h" #include "common/align.h" #include "lttng-tracer.h" diff --git a/src/lib/lttng-ust/lttng-ust-abi.c b/src/lib/lttng-ust/lttng-ust-abi.c index f1096d06..f8e0f5bb 100644 --- a/src/lib/lttng-ust/lttng-ust-abi.c +++ b/src/lib/lttng-ust/lttng-ust-abi.c @@ -46,7 +46,7 @@ #include "tracepoint-internal.h" #include "lttng-tracer.h" #include "string-utils.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "context-internal.h" #include "common/macros.h" diff --git a/src/lib/lttng-ust/lttng-ust-comm.c b/src/lib/lttng-ust/lttng-ust-comm.c index 2f6fe18f..6f5be120 100644 --- a/src/lib/lttng-ust/lttng-ust-comm.c +++ b/src/lib/lttng-ust/lttng-ust-comm.c @@ -52,7 +52,7 @@ #include "clock.h" #include "lib/lttng-ust/getcpu.h" #include "common/getenv.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "context-internal.h" #include "common/align.h" #include "lttng-counter-client.h" diff --git a/src/lib/lttng-ust/lttng-ust-statedump.c b/src/lib/lttng-ust/lttng-ust-statedump.c index 2dae71f9..1873fa4c 100644 --- a/src/lib/lttng-ust/lttng-ust-statedump.c +++ b/src/lib/lttng-ust/lttng-ust-statedump.c @@ -22,7 +22,7 @@ #include "lttng-ust-statedump.h" #include "jhash.h" #include "common/getenv.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #define TRACEPOINT_DEFINE #include "ust_lib.h" /* Only define. */ diff --git a/src/lib/lttng-ust/ust-core.c b/src/lib/lttng-ust/ust-core.c index d4829904..88330a1e 100644 --- a/src/lib/lttng-ust/ust-core.c +++ b/src/lib/lttng-ust/ust-core.c @@ -10,7 +10,7 @@ #include #include "context-internal.h" -#include "ust-events-internal.h" +#include "lib/lttng-ust/events.h" #include "common/logging.h" #include "lttng-tracer-core.h" #include "lttng-rb-clients.h" diff --git a/src/lib/lttng-ust/ust-events-internal.h b/src/lib/lttng-ust/ust-events-internal.h deleted file mode 100644 index 21d40e17..00000000 --- a/src/lib/lttng-ust/ust-events-internal.h +++ /dev/null @@ -1,905 +0,0 @@ -/* - * SPDX-License-Identifier: MIT - * - * Copyright 2019 (c) Francis Deslauriers - */ - -#ifndef _LTTNG_UST_EVENTS_INTERNAL_H -#define _LTTNG_UST_EVENTS_INTERNAL_H - -#include -#include - -#include -#include - -#include - -#include "common/macros.h" -#include "common/ust-context-provider.h" - -struct lttng_ust_abi_obj; -struct lttng_event_notifier_group; - -union lttng_ust_abi_args { - struct { - void *chan_data; - int wakeup_fd; - } channel; - struct { - int shm_fd; - int wakeup_fd; - } stream; - struct { - struct lttng_ust_abi_field_iter entry; - } field_list; - struct { - char *ctxname; - } app_context; - struct { - int event_notifier_notif_fd; - } event_notifier_handle; - struct { - void *counter_data; - } counter; - struct { - int shm_fd; - } counter_shm; -}; - -struct lttng_ust_abi_objd_ops { - long (*cmd)(int objd, unsigned int cmd, unsigned long arg, - union lttng_ust_abi_args *args, void *owner); - int (*release)(int objd); -}; - -enum lttng_enabler_format_type { - LTTNG_ENABLER_FORMAT_STAR_GLOB, - LTTNG_ENABLER_FORMAT_EVENT, -}; - -/* - * Enabler field, within whatever object is enabling an event. Target of - * backward reference. - */ -struct lttng_enabler { - enum lttng_enabler_format_type format_type; - - /* head list of struct lttng_ust_filter_bytecode_node */ - struct cds_list_head filter_bytecode_head; - /* head list of struct lttng_ust_excluder_node */ - struct cds_list_head excluder_head; - - struct lttng_ust_abi_event event_param; - unsigned int enabled:1; -}; - -struct lttng_event_enabler { - struct lttng_enabler base; - struct cds_list_head node; /* per-session list of enablers */ - struct lttng_ust_channel_buffer *chan; - /* - * Unused, but kept around to make it explicit that the tracer can do - * it. - */ - struct lttng_ust_ctx *ctx; -}; - -struct lttng_event_notifier_enabler { - struct lttng_enabler base; - uint64_t error_counter_index; - struct cds_list_head node; /* per-app list of event_notifier enablers */ - struct cds_list_head capture_bytecode_head; - struct lttng_event_notifier_group *group; /* weak ref */ - uint64_t user_token; /* User-provided token */ - uint64_t num_captures; -}; - -enum lttng_ust_bytecode_type { - LTTNG_UST_BYTECODE_TYPE_FILTER, - LTTNG_UST_BYTECODE_TYPE_CAPTURE, -}; - -struct lttng_ust_bytecode_node { - enum lttng_ust_bytecode_type type; - struct cds_list_head node; - struct lttng_enabler *enabler; - struct { - uint32_t len; - uint32_t reloc_offset; - uint64_t seqnum; - char data[]; - } bc; -}; - -/* - * Bytecode interpreter return value. - */ -enum lttng_ust_bytecode_interpreter_ret { - LTTNG_UST_BYTECODE_INTERPRETER_ERROR = -1, - LTTNG_UST_BYTECODE_INTERPRETER_OK = 0, -}; - -struct lttng_interpreter_output; -struct lttng_ust_bytecode_runtime_private; - -enum lttng_ust_bytecode_filter_result { - LTTNG_UST_BYTECODE_FILTER_ACCEPT = 0, - LTTNG_UST_BYTECODE_FILTER_REJECT = 1, -}; - -struct lttng_ust_bytecode_filter_ctx { - enum lttng_ust_bytecode_filter_result result; -}; - -struct lttng_ust_excluder_node { - struct cds_list_head node; - struct lttng_enabler *enabler; - /* - * struct lttng_ust_event_exclusion had variable sized array, - * must be last field. - */ - struct lttng_ust_abi_event_exclusion excluder; -}; - -/* Data structures used by the tracer. */ - -struct tp_list_entry { - struct lttng_ust_abi_tracepoint_iter tp; - struct cds_list_head head; -}; - -struct lttng_ust_tracepoint_list { - struct tp_list_entry *iter; - struct cds_list_head head; -}; - -struct tp_field_list_entry { - struct lttng_ust_abi_field_iter field; - struct cds_list_head head; -}; - -struct lttng_ust_field_list { - struct tp_field_list_entry *iter; - struct cds_list_head head; -}; - -/* - * Objects in a linked-list of enablers, owned by an event or event_notifier. - * This is used because an event (or a event_notifier) can be enabled by more - * than one enabler and we want a quick way to iterate over all enablers of an - * object. - * - * For example, event rules "my_app:a*" and "my_app:ab*" will both match the - * event with the name "my_app:abc". - */ -struct lttng_enabler_ref { - struct cds_list_head node; /* enabler ref list */ - struct lttng_enabler *ref; /* backward ref */ -}; - -#define LTTNG_COUNTER_DIMENSION_MAX 8 -struct lttng_counter_dimension { - uint64_t size; - uint64_t underflow_index; - uint64_t overflow_index; - uint8_t has_underflow; - uint8_t has_overflow; -}; - -struct lttng_counter_ops { - struct lib_counter *(*counter_create)(size_t nr_dimensions, - const struct lttng_counter_dimension *dimensions, - int64_t global_sum_step, - int global_counter_fd, - int nr_counter_cpu_fds, - const int *counter_cpu_fds, - bool is_daemon); - void (*counter_destroy)(struct lib_counter *counter); - int (*counter_add)(struct lib_counter *counter, - const size_t *dimension_indexes, int64_t v); - int (*counter_read)(struct lib_counter *counter, - const size_t *dimension_indexes, int cpu, - int64_t *value, bool *overflow, bool *underflow); - int (*counter_aggregate)(struct lib_counter *counter, - const size_t *dimension_indexes, int64_t *value, - bool *overflow, bool *underflow); - int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); -}; - -struct lttng_counter { - int objd; - struct lttng_event_notifier_group *event_notifier_group; /* owner */ - struct lttng_counter_transport *transport; - struct lib_counter *counter; - struct lttng_counter_ops *ops; -}; - -#define LTTNG_UST_EVENT_HT_BITS 12 -#define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS) - -struct lttng_ust_event_ht { - struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE]; -}; - -#define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12 -#define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS) -struct lttng_ust_event_notifier_ht { - struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE]; -}; - -#define LTTNG_UST_ENUM_HT_BITS 12 -#define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS) - -struct lttng_ust_enum_ht { - struct cds_hlist_head table[LTTNG_UST_ENUM_HT_SIZE]; -}; - -struct lttng_event_notifier_group { - int objd; - void *owner; - int notification_fd; - struct cds_list_head node; /* Event notifier group handle list */ - struct cds_list_head enablers_head; - struct cds_list_head event_notifiers_head; /* list of event_notifiers */ - struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */ - struct lttng_ust_ctx *ctx; /* contexts for filters. */ - - struct lttng_counter *error_counter; - size_t error_counter_len; -}; - -struct lttng_transport { - const char *name; - struct cds_list_head node; - struct lttng_ust_channel_buffer_ops ops; - const struct lttng_ust_lib_ring_buffer_config *client_config; -}; - -struct lttng_counter_transport { - const char *name; - struct cds_list_head node; - struct lttng_counter_ops ops; - const struct lib_counter_config *client_config; -}; - -struct lttng_ust_event_common_private { - struct lttng_ust_event_common *pub; /* Public event interface */ - - const struct lttng_ust_event_desc *desc; - /* Backward references: list of lttng_enabler_ref (ref to enablers) */ - struct cds_list_head enablers_ref_head; - int registered; /* has reg'd tracepoint probe */ - uint64_t user_token; - - int has_enablers_without_filter_bytecode; - /* list of struct lttng_ust_bytecode_runtime, sorted by seqnum */ - struct cds_list_head filter_bytecode_runtime_head; -}; - -struct lttng_ust_event_recorder_private { - struct lttng_ust_event_common_private parent; - - struct lttng_ust_event_recorder *pub; /* Public event interface */ - struct cds_list_head node; /* Event recorder list */ - struct cds_hlist_node hlist; /* Hash table of event recorders */ - struct lttng_ust_ctx *ctx; - unsigned int id; -}; - -struct lttng_ust_event_notifier_private { - struct lttng_ust_event_common_private parent; - - struct lttng_ust_event_notifier *pub; /* Public event notifier interface */ - struct lttng_event_notifier_group *group; /* weak ref */ - size_t num_captures; /* Needed to allocate the msgpack array. */ - uint64_t error_counter_index; - struct cds_list_head node; /* Event notifier list */ - struct cds_hlist_node hlist; /* Hash table of event notifiers */ - struct cds_list_head capture_bytecode_runtime_head; -}; - -struct lttng_ust_bytecode_runtime { - enum lttng_ust_bytecode_type type; - struct lttng_ust_bytecode_node *bc; - int link_failed; - int (*interpreter_func)(struct lttng_ust_bytecode_runtime *bytecode_runtime, - const char *interpreter_stack_data, - void *ctx); - struct cds_list_head node; /* list of bytecode runtime in event */ - /* - * Pointer to a URCU-protected pointer owned by an `struct - * lttng_session`or `struct lttng_event_notifier_group`. - */ - struct lttng_ust_ctx **pctx; -}; - -struct lttng_ust_session_private { - struct lttng_ust_session *pub; /* Public session interface */ - - int been_active; /* Been active ? */ - int objd; /* Object associated */ - struct cds_list_head chan_head; /* Channel list head */ - struct cds_list_head events_head; /* list of events */ - struct cds_list_head node; /* Session list */ - - /* List of enablers */ - struct cds_list_head enablers_head; - struct lttng_ust_event_ht events_ht; /* ht of events */ - void *owner; /* object owner */ - int tstate:1; /* Transient enable state */ - - int statedump_pending:1; - - struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */ - struct cds_list_head enums_head; - struct lttng_ust_ctx *ctx; /* contexts for filters. */ - - unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ - bool uuid_set; /* Is uuid set ? */ -}; - -struct lttng_enum { - const struct lttng_ust_enum_desc *desc; - struct lttng_ust_session *session; - struct cds_list_head node; /* Enum list in session */ - struct cds_hlist_node hlist; /* Session ht of enums */ - uint64_t id; /* Enumeration ID in sessiond */ -}; - -struct lttng_ust_shm_handle; - -struct lttng_ust_channel_buffer_ops_private { - struct lttng_ust_channel_buffer_ops *pub; /* Public channel buffer ops interface */ - - struct lttng_ust_channel_buffer *(*channel_create)(const char *name, - void *buf_addr, - size_t subbuf_size, size_t num_subbuf, - unsigned int switch_timer_interval, - unsigned int read_timer_interval, - unsigned char *uuid, - uint32_t chan_id, - const int *stream_fds, int nr_stream_fds, - int64_t blocking_timeout); - void (*channel_destroy)(struct lttng_ust_channel_buffer *chan); - /* - * packet_avail_size returns the available size in the current - * packet. Note that the size returned is only a hint, since it - * may change due to concurrent writes. - */ - size_t (*packet_avail_size)(struct lttng_ust_channel_buffer *chan); - int (*is_finalized)(struct lttng_ust_channel_buffer *chan); - int (*is_disabled)(struct lttng_ust_channel_buffer *chan); - int (*flush_buffer)(struct lttng_ust_channel_buffer *chan); -}; - -struct lttng_ust_channel_common_private { - struct lttng_ust_channel_common *pub; /* Public channel interface */ - - int objd; /* Object associated with channel. */ - int tstate:1; /* Transient enable state */ -}; - -struct lttng_ust_channel_buffer_private { - struct lttng_ust_channel_common_private parent; - - struct lttng_ust_channel_buffer *pub; /* Public channel buffer interface */ - struct cds_list_head node; /* Channel list in session */ - int header_type; /* 0: unset, 1: compact, 2: large */ - unsigned int id; /* Channel ID */ - enum lttng_ust_abi_chan_type type; - struct lttng_ust_ctx *ctx; - struct lttng_ust_lib_ring_buffer_channel *rb_chan; /* Ring buffer channel */ - unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ -}; - -/* - * IMPORTANT: this structure is part of the ABI between the consumer - * daemon and the UST library within traced applications. Changing it - * breaks the UST communication protocol. - * - * TODO: remove unused fields on next UST communication protocol - * breaking update. - */ -struct lttng_ust_abi_channel_config { - void *unused1; - int unused2; - void *unused3; - void *unused4; - int unused5; - struct cds_list_head unused6; - void *unused7; - int unused8; - void *unused9; - - /* Channel ID */ - unsigned int id; - enum lttng_ust_abi_chan_type unused10; - unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ - int unused11:1; -}; - -/* Global (filter), event and channel contexts. */ -struct lttng_ust_ctx { - struct lttng_ust_ctx_field *fields; - unsigned int nr_fields; - unsigned int allocated_fields; - unsigned int largest_align; -}; - -struct lttng_ust_registered_probe { - const struct lttng_ust_probe_desc *desc; - - struct cds_list_head head; /* chain registered probes */ - struct cds_list_head lazy_init_head; - int lazy; /* lazy registration */ -}; - -/* - * Context field - */ - -struct lttng_ust_ctx_field { - const struct lttng_ust_event_field *event_field; - size_t (*get_size)(void *priv, size_t offset); - void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx, - struct lttng_ust_channel_buffer *chan); - void (*get_value)(void *priv, struct lttng_ust_ctx_value *value); - void (*destroy)(void *priv); - void *priv; -}; - -static inline -const struct lttng_ust_type_integer *lttng_ust_get_type_integer(const struct lttng_ust_type_common *type) -{ - if (type->type != lttng_ust_type_integer) - return NULL; - return caa_container_of(type, const struct lttng_ust_type_integer, parent); -} - -static inline -const struct lttng_ust_type_float *lttng_ust_get_type_float(const struct lttng_ust_type_common *type) -{ - if (type->type != lttng_ust_type_float) - return NULL; - return caa_container_of(type, const struct lttng_ust_type_float, parent); -} - -static inline -const struct lttng_ust_type_string *lttng_ust_get_type_string(const struct lttng_ust_type_common *type) -{ - if (type->type != lttng_ust_type_string) - return NULL; - return caa_container_of(type, const struct lttng_ust_type_string, parent); -} - -static inline -const struct lttng_ust_type_enum *lttng_ust_get_type_enum(const struct lttng_ust_type_common *type) -{ - if (type->type != lttng_ust_type_enum) - return NULL; - return caa_container_of(type, const struct lttng_ust_type_enum, parent); -} - -static inline -const struct lttng_ust_type_array *lttng_ust_get_type_array(const struct lttng_ust_type_common *type) -{ - if (type->type != lttng_ust_type_array) - return NULL; - return caa_container_of(type, const struct lttng_ust_type_array, parent); -} - -static inline -const struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(const struct lttng_ust_type_common *type) -{ - if (type->type != lttng_ust_type_sequence) - return NULL; - return caa_container_of(type, const struct lttng_ust_type_sequence, parent); -} - -static inline -const struct lttng_ust_type_struct *lttng_ust_get_type_struct(const struct lttng_ust_type_common *type) -{ - if (type->type != lttng_ust_type_struct) - return NULL; - return caa_container_of(type, const struct lttng_ust_type_struct, parent); -} - -#define lttng_ust_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \ - ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_integer, { \ - .parent = { \ - .type = lttng_ust_type_integer, \ - }, \ - .struct_size = sizeof(struct lttng_ust_type_integer), \ - .size = (_size), \ - .alignment = (_alignment), \ - .signedness = (_signedness), \ - .reverse_byte_order = (_byte_order) != BYTE_ORDER, \ - .base = (_base), \ - })) - -#define lttng_ust_static_type_array_text(_length) \ - ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_array, { \ - .parent = { \ - .type = lttng_ust_type_array, \ - }, \ - .struct_size = sizeof(struct lttng_ust_type_array), \ - .length = (_length), \ - .alignment = 0, \ - .encoding = lttng_ust_string_encoding_UTF8, \ - .elem_type = lttng_ust_static_type_integer(sizeof(char) * CHAR_BIT, \ - lttng_ust_rb_alignof(char) * CHAR_BIT, lttng_ust_is_signed_type(char), \ - BYTE_ORDER, 10), \ - })) - -#define lttng_ust_static_event_field(_name, _type, _nowrite, _nofilter) \ - __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \ - .struct_size = sizeof(struct lttng_ust_event_field), \ - .name = (_name), \ - .type = (_type), \ - .nowrite = (_nowrite), \ - .nofilter = (_nofilter), \ - }) - -#define lttng_ust_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \ - __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_ctx_field, { \ - .event_field = (_event_field), \ - .get_size = (_get_size), \ - .record = (_record), \ - .get_value = (_get_value), \ - .destroy = (_destroy), \ - .priv = (_priv), \ - }) - -static inline -struct lttng_enabler *lttng_event_enabler_as_enabler( - struct lttng_event_enabler *event_enabler) -{ - return &event_enabler->base; -} - -static inline -struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( - struct lttng_event_notifier_enabler *event_notifier_enabler) -{ - return &event_notifier_enabler->base; -} - -/* - * Allocate and initialize a `struct lttng_event_enabler` object. - * - * On success, returns a `struct lttng_event_enabler`, - * On memory error, returns NULL. - */ -struct lttng_event_enabler *lttng_event_enabler_create( - enum lttng_enabler_format_type format_type, - struct lttng_ust_abi_event *event_param, - struct lttng_ust_channel_buffer *chan) - __attribute__((visibility("hidden"))); - -/* - * Destroy a `struct lttng_event_enabler` object. - */ -void lttng_event_enabler_destroy(struct lttng_event_enabler *enabler) - __attribute__((visibility("hidden"))); - -/* - * Enable a `struct lttng_event_enabler` object and all events related to this - * enabler. - */ -int lttng_event_enabler_enable(struct lttng_event_enabler *enabler) - __attribute__((visibility("hidden"))); - -/* - * Disable a `struct lttng_event_enabler` object and all events related to this - * enabler. - */ -int lttng_event_enabler_disable(struct lttng_event_enabler *enabler) - __attribute__((visibility("hidden"))); - -/* - * Attach filter bytecode program to `struct lttng_event_enabler` and all - * events related to this enabler. - */ -int lttng_event_enabler_attach_filter_bytecode( - struct lttng_event_enabler *enabler, - struct lttng_ust_bytecode_node **bytecode) - __attribute__((visibility("hidden"))); - -/* - * Attach an application context to an event enabler. - * - * Not implemented. - */ -int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler, - struct lttng_ust_abi_context *ctx) - __attribute__((visibility("hidden"))); - -/* - * Attach exclusion list to `struct lttng_event_enabler` and all - * events related to this enabler. - */ -int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler, - struct lttng_ust_excluder_node **excluder) - __attribute__((visibility("hidden"))); - -/* - * Synchronize bytecodes for the enabler and the instance (event or - * event_notifier). - * - * This function goes over all bytecode programs of the enabler (event or - * event_notifier enabler) to ensure each is linked to the provided instance. - */ -void lttng_enabler_link_bytecode(const struct lttng_ust_event_desc *event_desc, - struct lttng_ust_ctx **ctx, - struct cds_list_head *instance_bytecode_runtime_head, - struct cds_list_head *enabler_bytecode_runtime_head) - __attribute__((visibility("hidden"))); - -/* - * Allocate and initialize a `struct lttng_event_notifier_group` object. - * - * On success, returns a `struct lttng_triggre_group`, - * on memory error, returns NULL. - */ -struct lttng_event_notifier_group *lttng_event_notifier_group_create(void) - __attribute__((visibility("hidden"))); - -/* - * Destroy a `struct lttng_event_notifier_group` object. - */ -void lttng_event_notifier_group_destroy( - struct lttng_event_notifier_group *event_notifier_group) - __attribute__((visibility("hidden"))); - -/* - * Allocate and initialize a `struct lttng_event_notifier_enabler` object. - * - * On success, returns a `struct lttng_event_notifier_enabler`, - * On memory error, returns NULL. - */ -struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( - struct lttng_event_notifier_group *event_notifier_group, - enum lttng_enabler_format_type format_type, - struct lttng_ust_abi_event_notifier *event_notifier_param) - __attribute__((visibility("hidden"))); - -/* - * Destroy a `struct lttng_event_notifier_enabler` object. - */ -void lttng_event_notifier_enabler_destroy( - struct lttng_event_notifier_enabler *event_notifier_enabler) - __attribute__((visibility("hidden"))); - -/* - * Enable a `struct lttng_event_notifier_enabler` object and all event - * notifiers related to this enabler. - */ -int lttng_event_notifier_enabler_enable( - struct lttng_event_notifier_enabler *event_notifier_enabler) - __attribute__((visibility("hidden"))); - -/* - * Disable a `struct lttng_event_notifier_enabler` object and all event - * notifiers related to this enabler. - */ -int lttng_event_notifier_enabler_disable( - struct lttng_event_notifier_enabler *event_notifier_enabler) - __attribute__((visibility("hidden"))); - -/* - * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and - * all event notifiers related to this enabler. - */ -int lttng_event_notifier_enabler_attach_filter_bytecode( - struct lttng_event_notifier_enabler *event_notifier_enabler, - struct lttng_ust_bytecode_node **bytecode) - __attribute__((visibility("hidden"))); - -/* - * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and - * all event_notifiers related to this enabler. - */ -int lttng_event_notifier_enabler_attach_capture_bytecode( - struct lttng_event_notifier_enabler *event_notifier_enabler, - struct lttng_ust_bytecode_node **bytecode) - __attribute__((visibility("hidden"))); - -/* - * Attach exclusion list to `struct lttng_event_notifier_enabler` and all - * event notifiers related to this enabler. - */ -int lttng_event_notifier_enabler_attach_exclusion( - struct lttng_event_notifier_enabler *event_notifier_enabler, - struct lttng_ust_excluder_node **excluder) - __attribute__((visibility("hidden"))); - -void lttng_free_event_filter_runtime(struct lttng_ust_event_common *event) - __attribute__((visibility("hidden"))); - -/* - * Connect the probe on all enablers matching this event description. - * Called on library load. - */ -int lttng_fix_pending_event_notifiers(void) - __attribute__((visibility("hidden"))); - -struct lttng_counter *lttng_ust_counter_create( - const char *counter_transport_name, - size_t number_dimensions, const struct lttng_counter_dimension *dimensions) - __attribute__((visibility("hidden"))); - -#ifdef HAVE_LINUX_PERF_EVENT_H - -int lttng_add_perf_counter_to_ctx(uint32_t type, - uint64_t config, - const char *name, - struct lttng_ust_ctx **ctx) - __attribute__((visibility("hidden"))); - -int lttng_perf_counter_init(void) - __attribute__((visibility("hidden"))); - -void lttng_perf_counter_exit(void) - __attribute__((visibility("hidden"))); - -#else /* #ifdef HAVE_LINUX_PERF_EVENT_H */ - -static inline -int lttng_add_perf_counter_to_ctx(uint32_t type, - uint64_t config, - const char *name, - struct lttng_ust_ctx **ctx) -{ - return -ENOSYS; -} -static inline -int lttng_perf_counter_init(void) -{ - return 0; -} -static inline -void lttng_perf_counter_exit(void) -{ -} -#endif /* #else #ifdef HAVE_LINUX_PERF_EVENT_H */ - -int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list) - __attribute__((visibility("hidden"))); - -void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list) - __attribute__((visibility("hidden"))); - -int lttng_probes_get_field_list(struct lttng_ust_field_list *list) - __attribute__((visibility("hidden"))); - -void lttng_probes_prune_field_list(struct lttng_ust_field_list *list) - __attribute__((visibility("hidden"))); - -struct lttng_ust_abi_tracepoint_iter * - lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list) - __attribute__((visibility("hidden"))); - -struct lttng_ust_abi_field_iter * - lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list) - __attribute__((visibility("hidden"))); - -struct lttng_ust_session *lttng_session_create(void) - __attribute__((visibility("hidden"))); - -int lttng_session_enable(struct lttng_ust_session *session) - __attribute__((visibility("hidden"))); - -int lttng_session_disable(struct lttng_ust_session *session) - __attribute__((visibility("hidden"))); - -int lttng_session_statedump(struct lttng_ust_session *session) - __attribute__((visibility("hidden"))); - -void lttng_session_destroy(struct lttng_ust_session *session) - __attribute__((visibility("hidden"))); - -/* - * Called with ust lock held. - */ -int lttng_session_active(void) - __attribute__((visibility("hidden"))); - -struct cds_list_head *lttng_get_sessions(void) - __attribute__((visibility("hidden"))); - -void lttng_handle_pending_statedump(void *owner) - __attribute__((visibility("hidden"))); - -int lttng_channel_enable(struct lttng_ust_channel_common *lttng_channel) - __attribute__((visibility("hidden"))); - -int lttng_channel_disable(struct lttng_ust_channel_common *lttng_channel) - __attribute__((visibility("hidden"))); - -void lttng_transport_register(struct lttng_transport *transport) - __attribute__((visibility("hidden"))); - -void lttng_transport_unregister(struct lttng_transport *transport) - __attribute__((visibility("hidden"))); - -/* This is ABI between liblttng-ust and liblttng-ust-ctl */ -struct lttng_transport *lttng_ust_transport_find(const char *name); - -/* This is ABI between liblttng-ust and liblttng-ust-dl */ -void lttng_ust_dl_update(void *ip); - -void lttng_probe_provider_unregister_events(const struct lttng_ust_probe_desc *desc) - __attribute__((visibility("hidden"))); - -int lttng_fix_pending_events(void) - __attribute__((visibility("hidden"))); - -struct cds_list_head *lttng_get_probe_list_head(void) - __attribute__((visibility("hidden"))); - -struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session, - const struct lttng_ust_enum_desc *enum_desc) - __attribute__((visibility("hidden"))); - -int lttng_abi_create_root_handle(void) - __attribute__((visibility("hidden"))); - -const struct lttng_ust_abi_objd_ops *lttng_ust_abi_objd_ops(int id) - __attribute__((visibility("hidden"))); - -int lttng_ust_abi_objd_unref(int id, int is_owner) - __attribute__((visibility("hidden"))); - -void lttng_ust_abi_exit(void) - __attribute__((visibility("hidden"))); - -void lttng_ust_abi_events_exit(void) - __attribute__((visibility("hidden"))); - -void lttng_ust_abi_objd_table_owner_cleanup(void *owner) - __attribute__((visibility("hidden"))); - -struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void) - __attribute__((visibility("hidden"))); - -void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan) - __attribute__((visibility("hidden"))); - -int lttng_ust_interpret_event_filter(struct lttng_ust_event_common *event, - const char *interpreter_stack_data, - void *filter_ctx) - __attribute__((visibility("hidden"))); - -int lttng_ust_session_uuid_validate(struct lttng_ust_session *session, - unsigned char *uuid) - __attribute__((visibility("hidden"))); - -bool lttng_ust_validate_event_name(const struct lttng_ust_event_desc *desc) - __attribute__((visibility("hidden"))); - -void lttng_ust_format_event_name(const struct lttng_ust_event_desc *desc, - char *name) - __attribute__((visibility("hidden"))); - -int lttng_ust_add_app_context_to_ctx_rcu(const char *name, struct lttng_ust_ctx **ctx) - __attribute__((visibility("hidden"))); - -int lttng_ust_context_set_provider_rcu(struct lttng_ust_ctx **_ctx, - const char *name, - size_t (*get_size)(void *priv, size_t offset), - void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx, - struct lttng_ust_channel_buffer *chan), - void (*get_value)(void *priv, struct lttng_ust_ctx_value *value), - void *priv) - __attribute__((visibility("hidden"))); - -void lttng_ust_context_set_session_provider(const char *name, - size_t (*get_size)(void *priv, size_t offset), - void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx, - struct lttng_ust_channel_buffer *chan), - void (*get_value)(void *priv, struct lttng_ust_ctx_value *value), - void *priv) - __attribute__((visibility("hidden"))); - -#endif /* _LTTNG_UST_EVENTS_INTERNAL_H */