[lttng-ust.git] / include / lttng / ust-events.h

#ifndef _UST_LTTNG_EVENTS_H
#define _UST_LTTNG_EVENTS_H

/*
 * ust/lttng-events.h
 *
 * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * Holds LTTng per-session event registry.
 *
 * Dual LGPL v2.1/GPL v2 license.
 */

#include <urcu/list.h>
#include <uuid/uuid.h>
#include <stdint.h>
#include <lttng/ust-abi.h>
#include <lttng/ust-tracer.h>
#include <endian.h>
#include <float.h>

struct ltt_channel;
struct ltt_session;
struct lttng_ust_lib_ring_buffer_ctx;

/* Type description */

/* Update the astract_types name table in lttng-types.c along with this enum */
enum abstract_types {
	atype_integer,
	atype_enum,
	atype_array,
	atype_sequence,
	atype_string,
	atype_float,
	NR_ABSTRACT_TYPES,
};

/* Update the string_encodings name table in lttng-types.c along with this enum */
enum lttng_string_encodings {
	lttng_encode_none = 0,
	lttng_encode_UTF8 = 1,
	lttng_encode_ASCII = 2,
	NR_STRING_ENCODINGS,
};

struct lttng_enum_entry {
	unsigned long long start, end;	/* start and end are inclusive */
	const char *string;
};

#define __type_integer(_type, _byte_order, _base, _encoding)	\
	{							\
	    .atype = atype_integer,				\
	    .u.basic.integer =					\
		{						\
		  .size = sizeof(_type) * CHAR_BIT,		\
		  .alignment = lttng_alignof(_type) * CHAR_BIT,	\
		  .signedness = lttng_is_signed_type(_type),	\
		  .reverse_byte_order = _byte_order != __BYTE_ORDER,	\
		  .base = _base,				\
		  .encoding = lttng_encode_##_encoding,		\
		},						\
	}							\

struct lttng_integer_type {
	unsigned int size;		/* in bits */
	unsigned short alignment;	/* in bits */
	unsigned int signedness:1;
	unsigned int reverse_byte_order:1;
	unsigned int base;		/* 2, 8, 10, 16, for pretty print */
	enum lttng_string_encodings encoding;
};

/*
 * Only float and double are supported. long double is not supported at
 * the moment.
 */
#define _float_mant_dig(_type)						\
	(sizeof(_type) == sizeof(float) ? FLT_MANT_DIG			\
		: (sizeof(_type) == sizeof(double) ? DBL_MANT_DIG	\
		: 0))

#define __type_float(_type)					\
	{							\
	    .atype = atype_float,				\
	    .u.basic._float =					\
		{						\
		  .exp_dig = sizeof(_type) * CHAR_BIT		\
				- _float_mant_dig(_type),	\
		  .mant_dig = _float_mant_dig(_type),		\
		  .alignment = lttng_alignof(_type) * CHAR_BIT,	\
		  .reverse_byte_order = __BYTE_ORDER != __FLOAT_WORD_ORDER, \
		},						\
	}							\

struct lttng_float_type {
	unsigned int exp_dig;		/* exponent digits, in bits */
	unsigned int mant_dig;		/* mantissa digits, in bits */
	unsigned short alignment;	/* in bits */
	unsigned int reverse_byte_order:1;
};

union _lttng_basic_type {
	struct lttng_integer_type integer;
	struct {
		const char *name;
	} enumeration;
	struct {
		enum lttng_string_encodings encoding;
	} string;
	struct lttng_float_type _float;
};

struct lttng_basic_type {
	enum abstract_types atype;
	union {
		union _lttng_basic_type basic;
	} u;
};

struct lttng_type {
	enum abstract_types atype;
	union {
		union _lttng_basic_type basic;
		struct {
			struct lttng_basic_type elem_type;
			unsigned int length;		/* num. elems. */
		} array;
		struct {
			struct lttng_basic_type length_type;
			struct lttng_basic_type elem_type;
		} sequence;
	} u;
};

struct lttng_enum {
	const char *name;
	struct lttng_type container_type;
	const struct lttng_enum_entry *entries;
	unsigned int len;
};

/* Event field description */

struct lttng_event_field {
	const char *name;
	struct lttng_type type;
};

struct lttng_ctx_field {
	struct lttng_event_field event_field;
	size_t (*get_size)(size_t offset);
	void (*record)(struct lttng_ctx_field *field,
		       struct lttng_ust_lib_ring_buffer_ctx *ctx,
		       struct ltt_channel *chan);
	union {
	} u;
	void (*destroy)(struct lttng_ctx_field *field);
};

struct lttng_ctx {
	struct lttng_ctx_field *fields;
	unsigned int nr_fields;
	unsigned int allocated_fields;
};

struct lttng_event_desc {
	const char *name;
	void *probe_callback;
	const struct lttng_event_ctx *ctx;	/* context */
	const struct lttng_event_field *fields;	/* event payload */
	unsigned int nr_fields;
};

struct lttng_probe_desc {
	const struct lttng_event_desc *event_desc;
	unsigned int nr_events;
	struct cds_list_head head;		/* chain registered probes */
};

struct ust_pending_probe;

/*
 * ltt_event structure is referred to by the tracing fast path. It must be
 * kept small.
 */
struct ltt_event {
	unsigned int id;
	struct ltt_channel *chan;
	int enabled;
	const struct lttng_event_desc *desc;
	void *filter;
	struct lttng_ctx *ctx;
	enum lttng_ust_instrumentation instrumentation;
	union {
	} u;
	struct cds_list_head list;		/* Event list */
	struct ust_pending_probe *pending_probe;
	int metadata_dumped:1;
};

struct channel;
struct lttng_ust_shm_handle;

struct ltt_channel_ops {
	struct ltt_channel *(*channel_create)(const char *name,
				struct ltt_channel *ltt_chan,
				void *buf_addr,
				size_t subbuf_size, size_t num_subbuf,
				unsigned int switch_timer_interval,
				unsigned int read_timer_interval,
				int *shm_fd, int *wait_fd,
				uint64_t *memory_map_size);
	void (*channel_destroy)(struct ltt_channel *ltt_chan);
	struct lttng_ust_lib_ring_buffer *(*buffer_read_open)(struct channel *chan,
				struct lttng_ust_shm_handle *handle,
				int *shm_fd, int *wait_fd,
				uint64_t *memory_map_size);
	void (*buffer_read_close)(struct lttng_ust_lib_ring_buffer *buf,
				struct lttng_ust_shm_handle *handle);
	int (*event_reserve)(struct lttng_ust_lib_ring_buffer_ctx *ctx,
			     uint32_t event_id);
	void (*event_commit)(struct lttng_ust_lib_ring_buffer_ctx *ctx);
	void (*event_write)(struct lttng_ust_lib_ring_buffer_ctx *ctx, const void *src,
			    size_t len);
	/*
	 * 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 channel *chan,
				    struct lttng_ust_shm_handle *handle);
	//wait_queue_head_t *(*get_reader_wait_queue)(struct channel *chan);
	//wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan);
	int (*is_finalized)(struct channel *chan);
	int (*is_disabled)(struct channel *chan);
	int (*flush_buffer)(struct channel *chan, struct lttng_ust_shm_handle *handle);
};

struct ltt_channel {
	unsigned int id;
	struct channel *chan;		/* Channel buffers */
	int enabled;
	struct lttng_ctx *ctx;
	/* Event ID management */
	struct ltt_session *session;
	int objd;			/* Object associated to channel */
	unsigned int free_event_id;	/* Next event ID to allocate */
	unsigned int used_event_id;	/* Max allocated event IDs */
	struct cds_list_head list;	/* Channel list */
	struct ltt_channel_ops *ops;
	int header_type;		/* 0: unset, 1: compact, 2: large */
	struct lttng_ust_shm_handle *handle;	/* shared-memory handle */
	int metadata_dumped:1;
};

struct ltt_session {
	int active;			/* Is trace session active ? */
	int been_active;		/* Has trace session been active ? */
	int objd;			/* Object associated to session */
	struct ltt_channel *metadata;	/* Metadata channel */
	struct cds_list_head chan;	/* Channel list head */
	struct cds_list_head events;	/* Event list head */
	struct cds_list_head list;	/* Session list */
	unsigned int free_chan_id;	/* Next chan ID to allocate */
	uuid_t uuid;			/* Trace session unique ID */
	int metadata_dumped:1;
};

struct ltt_transport {
	char *name;
	struct cds_list_head node;
	struct ltt_channel_ops ops;
};

struct ltt_session *ltt_session_create(void);
int ltt_session_enable(struct ltt_session *session);
int ltt_session_disable(struct ltt_session *session);
void ltt_session_destroy(struct ltt_session *session);

struct ltt_channel *ltt_channel_create(struct ltt_session *session,
				       const char *transport_name,
				       void *buf_addr,
				       size_t subbuf_size, size_t num_subbuf,
				       unsigned int switch_timer_interval,
				       unsigned int read_timer_interval,
				       int *shm_fd, int *wait_fd,
				       uint64_t *memory_map_size);
struct ltt_channel *ltt_global_channel_create(struct ltt_session *session,
				       int overwrite, void *buf_addr,
				       size_t subbuf_size, size_t num_subbuf,
				       unsigned int switch_timer_interval,
				       unsigned int read_timer_interval,
				       int *shm_fd, int *wait_fd,
				       uint64_t *memory_map_size);

struct ltt_event *ltt_event_create(struct ltt_channel *chan,
				   struct lttng_ust_event *event_param,
				   void *filter);

int ltt_channel_enable(struct ltt_channel *channel);
int ltt_channel_disable(struct ltt_channel *channel);
int ltt_event_enable(struct ltt_event *event);
int ltt_event_disable(struct ltt_event *event);

void ltt_transport_register(struct ltt_transport *transport);
void ltt_transport_unregister(struct ltt_transport *transport);

void synchronize_trace(void);

int ltt_probe_register(struct lttng_probe_desc *desc);
void ltt_probe_unregister(struct lttng_probe_desc *desc);
int pending_probe_fix_events(const struct lttng_event_desc *desc);
const struct lttng_event_desc *ltt_event_get(const char *name);
void ltt_event_put(const struct lttng_event_desc *desc);
int ltt_probes_init(void);
void ltt_probes_exit(void);
int lttng_find_context(struct lttng_ctx *ctx, const char *name);
struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p);
void lttng_remove_context_field(struct lttng_ctx **ctx_p,
				struct lttng_ctx_field *field);
void lttng_destroy_context(struct lttng_ctx *ctx);
int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx);
int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx);
int lttng_add_pthread_id_to_ctx(struct lttng_ctx **ctx);
int lttng_add_procname_to_ctx(struct lttng_ctx **ctx);
void lttng_context_vtid_reset(void);
void lttng_context_vpid_reset(void);

#endif /* _UST_LTTNG_EVENTS_H */
Commit	Line	Data
0a42beb6 MD	1	#ifndef _UST_LTTNG_EVENTS_H
0a42beb6 MD	2	#define _UST_LTTNG_EVENTS_H
8020ceb5 MD	3
8020ceb5 MD	4	/*
0a42beb6	5	* ust/lttng-events.h
8020ceb5 MD	6	*
	7	* Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*
	9	* Holds LTTng per-session event registry.
	10	*
	11	* Dual LGPL v2.1/GPL v2 license.
	12	*/
	13
9f3fdbc6 MD	14	#include <urcu/list.h>
	15	#include <uuid/uuid.h>
	16	#include <stdint.h>
4318ae1b MD	17	#include <lttng/ust-abi.h>
4318ae1b MD	18	#include <lttng/ust-tracer.h>
20f1eee7 MD	19	#include <endian.h>
20f1eee7 MD	20	#include <float.h>
8020ceb5	21
8020ceb5 MD	22	struct ltt_channel;
8020ceb5 MD	23	struct ltt_session;
4cfec15c	24	struct lttng_ust_lib_ring_buffer_ctx;
8020ceb5 MD	25
	26	/* Type description */
	27
	28	/* Update the astract_types name table in lttng-types.c along with this enum */
	29	enum abstract_types {
	30	atype_integer,
	31	atype_enum,
	32	atype_array,
	33	atype_sequence,
	34	atype_string,
20f1eee7	35	atype_float,
8020ceb5 MD	36	NR_ABSTRACT_TYPES,
	37	};
	38
	39	/* Update the string_encodings name table in lttng-types.c along with this enum */
	40	enum lttng_string_encodings {
	41	lttng_encode_none = 0,
	42	lttng_encode_UTF8 = 1,
	43	lttng_encode_ASCII = 2,
	44	NR_STRING_ENCODINGS,
	45	};
	46
	47	struct lttng_enum_entry {
	48	unsigned long long start, end; /* start and end are inclusive */
	49	const char *string;
	50	};
	51
	52	#define __type_integer(_type, _byte_order, _base, _encoding) \
	53	{ \
	54	.atype = atype_integer, \
	55	.u.basic.integer = \
	56	{ \
	57	.size = sizeof(_type) * CHAR_BIT, \
1dbfff0c MD	58	.alignment = lttng_alignof(_type) * CHAR_BIT, \
1dbfff0c MD	59	.signedness = lttng_is_signed_type(_type), \
8020ceb5 MD	60	.reverse_byte_order = _byte_order != __BYTE_ORDER, \
	61	.base = _base, \
	62	.encoding = lttng_encode_##_encoding, \
	63	}, \
	64	} \
	65
	66	struct lttng_integer_type {
	67	unsigned int size; /* in bits */
	68	unsigned short alignment; /* in bits */
	69	unsigned int signedness:1;
	70	unsigned int reverse_byte_order:1;
	71	unsigned int base; /* 2, 8, 10, 16, for pretty print */
	72	enum lttng_string_encodings encoding;
	73	};
	74
d3ed854b MD	75	/*
	76	* Only float and double are supported. long double is not supported at
	77	* the moment.
	78	*/
20f1eee7 MD	79	#define _float_mant_dig(_type) \
	80	(sizeof(_type) == sizeof(float) ? FLT_MANT_DIG \
	81	: (sizeof(_type) == sizeof(double) ? DBL_MANT_DIG \
d3ed854b	82	: 0))
20f1eee7 MD	83
	84	#define __type_float(_type) \
	85	{ \
	86	.atype = atype_float, \
	87	.u.basic._float = \
	88	{ \
	89	.exp_dig = sizeof(_type) * CHAR_BIT \
	90	- _float_mant_dig(_type), \
	91	.mant_dig = _float_mant_dig(_type), \
1dbfff0c	92	.alignment = lttng_alignof(_type) * CHAR_BIT, \
20f1eee7 MD	93	.reverse_byte_order = __BYTE_ORDER != __FLOAT_WORD_ORDER, \
	94	}, \
	95	} \
	96
	97	struct lttng_float_type {
	98	unsigned int exp_dig; /* exponent digits, in bits */
	99	unsigned int mant_dig; /* mantissa digits, in bits */
	100	unsigned short alignment; /* in bits */
	101	unsigned int reverse_byte_order:1;
	102	};
	103
8020ceb5 MD	104	union _lttng_basic_type {
	105	struct lttng_integer_type integer;
	106	struct {
	107	const char *name;
	108	} enumeration;
	109	struct {
	110	enum lttng_string_encodings encoding;
	111	} string;
20f1eee7	112	struct lttng_float_type _float;
8020ceb5 MD	113	};
	114
	115	struct lttng_basic_type {
	116	enum abstract_types atype;
	117	union {
	118	union _lttng_basic_type basic;
	119	} u;
	120	};
	121
	122	struct lttng_type {
	123	enum abstract_types atype;
	124	union {
	125	union _lttng_basic_type basic;
	126	struct {
	127	struct lttng_basic_type elem_type;
	128	unsigned int length; /* num. elems. */
	129	} array;
	130	struct {
	131	struct lttng_basic_type length_type;
	132	struct lttng_basic_type elem_type;
	133	} sequence;
	134	} u;
	135	};
	136
	137	struct lttng_enum {
	138	const char *name;
	139	struct lttng_type container_type;
	140	const struct lttng_enum_entry *entries;
	141	unsigned int len;
	142	};
	143
	144	/* Event field description */
	145
	146	struct lttng_event_field {
	147	const char *name;
	148	struct lttng_type type;
	149	};
	150
	151	struct lttng_ctx_field {
	152	struct lttng_event_field event_field;
	153	size_t (*get_size)(size_t offset);
	154	void (record)(struct lttng_ctx_field field,
4cfec15c	155	struct lttng_ust_lib_ring_buffer_ctx *ctx,
8020ceb5 MD	156	struct ltt_channel *chan);
8020ceb5 MD	157	union {
8020ceb5 MD	158	} u;
	159	void (destroy)(struct lttng_ctx_field field);
	160	};
	161
	162	struct lttng_ctx {
	163	struct lttng_ctx_field *fields;
	164	unsigned int nr_fields;
	165	unsigned int allocated_fields;
	166	};
	167
	168	struct lttng_event_desc {
	169	const char *name;
	170	void *probe_callback;
	171	const struct lttng_event_ctx ctx; / context */
	172	const struct lttng_event_field fields; / event payload */
	173	unsigned int nr_fields;
8020ceb5 MD	174	};
	175
	176	struct lttng_probe_desc {
	177	const struct lttng_event_desc *event_desc;
	178	unsigned int nr_events;
9f3fdbc6	179	struct cds_list_head head; /* chain registered probes */
8020ceb5 MD	180	};
8020ceb5 MD	181
8165c8da MD	182	struct ust_pending_probe;
8165c8da MD	183
8020ceb5 MD	184	/*
	185	* ltt_event structure is referred to by the tracing fast path. It must be
	186	* kept small.
	187	*/
	188	struct ltt_event {
	189	unsigned int id;
	190	struct ltt_channel *chan;
976fe9ea	191	int enabled;
8020ceb5 MD	192	const struct lttng_event_desc *desc;
	193	void *filter;
	194	struct lttng_ctx *ctx;
9f3fdbc6	195	enum lttng_ust_instrumentation instrumentation;
8020ceb5	196	union {
8020ceb5	197	} u;
9f3fdbc6	198	struct cds_list_head list; /* Event list */
8165c8da	199	struct ust_pending_probe *pending_probe;
8020ceb5 MD	200	int metadata_dumped:1;
	201	};
	202
8d8a24c8	203	struct channel;
38fae1d3	204	struct lttng_ust_shm_handle;
8d8a24c8	205
8020ceb5	206	struct ltt_channel_ops {
1d498196	207	struct ltt_channel (channel_create)(const char *name,
8020ceb5 MD	208	struct ltt_channel *ltt_chan,
	209	void *buf_addr,
	210	size_t subbuf_size, size_t num_subbuf,
	211	unsigned int switch_timer_interval,
193183fb MD	212	unsigned int read_timer_interval,
	213	int shm_fd, int wait_fd,
	214	uint64_t *memory_map_size);
1d498196	215	void (channel_destroy)(struct ltt_channel ltt_chan);
4cfec15c	216	struct lttng_ust_lib_ring_buffer (buffer_read_open)(struct channel *chan,
38fae1d3	217	struct lttng_ust_shm_handle *handle,
381c0f1e MD	218	int shm_fd, int wait_fd,
381c0f1e MD	219	uint64_t *memory_map_size);
4cfec15c	220	void (buffer_read_close)(struct lttng_ust_lib_ring_buffer buf,
38fae1d3	221	struct lttng_ust_shm_handle *handle);
4cfec15c	222	int (event_reserve)(struct lttng_ust_lib_ring_buffer_ctx ctx,
8020ceb5	223	uint32_t event_id);
4cfec15c MD	224	void (event_commit)(struct lttng_ust_lib_ring_buffer_ctx ctx);
4cfec15c MD	225	void (event_write)(struct lttng_ust_lib_ring_buffer_ctx ctx, const void *src,
8020ceb5 MD	226	size_t len);
	227	/*
	228	* packet_avail_size returns the available size in the current
	229	* packet. Note that the size returned is only a hint, since it
	230	* may change due to concurrent writes.
	231	*/
1d498196	232	size_t (packet_avail_size)(struct channel chan,
38fae1d3	233	struct lttng_ust_shm_handle *handle);
9f3fdbc6 MD	234	//wait_queue_head_t (get_reader_wait_queue)(struct channel *chan);
9f3fdbc6 MD	235	//wait_queue_head_t (get_hp_wait_queue)(struct channel *chan);
8020ceb5 MD	236	int (is_finalized)(struct channel chan);
8020ceb5 MD	237	int (is_disabled)(struct channel chan);
38fae1d3	238	int (flush_buffer)(struct channel chan, struct lttng_ust_shm_handle *handle);
8020ceb5 MD	239	};
	240
	241	struct ltt_channel {
	242	unsigned int id;
	243	struct channel chan; / Channel buffers */
976fe9ea	244	int enabled;
8020ceb5 MD	245	struct lttng_ctx *ctx;
	246	/* Event ID management */
	247	struct ltt_session *session;
0a42beb6	248	int objd; /* Object associated to channel */
8020ceb5	249	unsigned int free_event_id; /* Next event ID to allocate */
8165c8da	250	unsigned int used_event_id; /* Max allocated event IDs */
9f3fdbc6	251	struct cds_list_head list; /* Channel list */
8020ceb5 MD	252	struct ltt_channel_ops *ops;
8020ceb5 MD	253	int header_type; /* 0: unset, 1: compact, 2: large */
38fae1d3	254	struct lttng_ust_shm_handle handle; / shared-memory handle */
8020ceb5 MD	255	int metadata_dumped:1;
	256	};
	257
	258	struct ltt_session {
	259	int active; /* Is trace session active ? */
	260	int been_active; /* Has trace session been active ? */
0a42beb6	261	int objd; /* Object associated to session */
8020ceb5	262	struct ltt_channel metadata; / Metadata channel */
9f3fdbc6 MD	263	struct cds_list_head chan; /* Channel list head */
	264	struct cds_list_head events; /* Event list head */
	265	struct cds_list_head list; /* Session list */
8020ceb5	266	unsigned int free_chan_id; /* Next chan ID to allocate */
9f3fdbc6	267	uuid_t uuid; /* Trace session unique ID */
8020ceb5 MD	268	int metadata_dumped:1;
	269	};
	270
	271	struct ltt_transport {
	272	char *name;
9f3fdbc6	273	struct cds_list_head node;
8020ceb5 MD	274	struct ltt_channel_ops ops;
	275	};
	276
	277	struct ltt_session *ltt_session_create(void);
976fe9ea MD	278	int ltt_session_enable(struct ltt_session *session);
976fe9ea MD	279	int ltt_session_disable(struct ltt_session *session);
8020ceb5 MD	280	void ltt_session_destroy(struct ltt_session *session);
	281
	282	struct ltt_channel ltt_channel_create(struct ltt_session session,
	283	const char *transport_name,
	284	void *buf_addr,
	285	size_t subbuf_size, size_t num_subbuf,
	286	unsigned int switch_timer_interval,
193183fb MD	287	unsigned int read_timer_interval,
	288	int shm_fd, int wait_fd,
	289	uint64_t *memory_map_size);
8020ceb5 MD	290	struct ltt_channel ltt_global_channel_create(struct ltt_session session,
	291	int overwrite, void *buf_addr,
	292	size_t subbuf_size, size_t num_subbuf,
	293	unsigned int switch_timer_interval,
193183fb MD	294	unsigned int read_timer_interval,
	295	int shm_fd, int wait_fd,
	296	uint64_t *memory_map_size);
8020ceb5 MD	297
8020ceb5 MD	298	struct ltt_event ltt_event_create(struct ltt_channel chan,
9f3fdbc6	299	struct lttng_ust_event *event_param,
8020ceb5 MD	300	void *filter);
8020ceb5 MD	301
976fe9ea MD	302	int ltt_channel_enable(struct ltt_channel *channel);
	303	int ltt_channel_disable(struct ltt_channel *channel);
	304	int ltt_event_enable(struct ltt_event *event);
	305	int ltt_event_disable(struct ltt_event *event);
	306
8020ceb5 MD	307	void ltt_transport_register(struct ltt_transport *transport);
	308	void ltt_transport_unregister(struct ltt_transport *transport);
	309
4b4de73e	310	void synchronize_trace(void);
8020ceb5 MD	311
	312	int ltt_probe_register(struct lttng_probe_desc *desc);
	313	void ltt_probe_unregister(struct lttng_probe_desc *desc);
8165c8da	314	int pending_probe_fix_events(const struct lttng_event_desc *desc);
8020ceb5 MD	315	const struct lttng_event_desc ltt_event_get(const char name);
	316	void ltt_event_put(const struct lttng_event_desc *desc);
	317	int ltt_probes_init(void);
	318	void ltt_probes_exit(void);
8173ec7c MD	319	int lttng_find_context(struct lttng_ctx ctx, const char name);
	320	struct lttng_ctx_field lttng_append_context(struct lttng_ctx *ctx_p);
	321	void lttng_remove_context_field(struct lttng_ctx **ctx_p,
8020ceb5 MD	322	struct lttng_ctx_field *field);
8020ceb5 MD	323	void lttng_destroy_context(struct lttng_ctx *ctx);
3b402b40	324	int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx);
c1ef86f0	325	int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx);
8173ec7c	326	int lttng_add_pthread_id_to_ctx(struct lttng_ctx **ctx);
4847e9bb	327	int lttng_add_procname_to_ctx(struct lttng_ctx **ctx);
a93bfc45	328	void lttng_context_vtid_reset(void);
c1ef86f0	329	void lttng_context_vpid_reset(void);
9f3fdbc6	330
0a42beb6	331	#endif /* _UST_LTTNG_EVENTS_H */