X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust%2Fust-events-internal.h;fp=liblttng-ust%2Fust-events-internal.h;h=0000000000000000000000000000000000000000;hb=9d4c8b2d907edb9ebc9bfde55602598e7ba0832e;hp=d84d32ee1af7be827d2b6ac571f3d4297b73ba1d;hpb=6ba6fd60507f8e045bdc4f1be14e9d99c6a15f7f;p=lttng-ust.git

diff --git a/liblttng-ust/ust-events-internal.h b/liblttng-ust/ust-events-internal.h
deleted file mode 100644
index d84d32ee..00000000
--- a/liblttng-ust/ust-events-internal.h
+++ /dev/null
@@ -1,905 +0,0 @@
-/*
- * SPDX-License-Identifier: MIT
- *
- * Copyright 2019 (c) Francis Deslauriers <francis.deslauriers@efficios.com>
- */
-
-#ifndef _LTTNG_UST_EVENTS_INTERNAL_H
-#define _LTTNG_UST_EVENTS_INTERNAL_H
-
-#include <limits.h>
-#include <stdint.h>
-
-#include <urcu/list.h>
-#include <urcu/hlist.h>
-
-#include <lttng/ust-events.h>
-
-#include <ust-helper.h>
-#include "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 */