-#ifndef _LTTNG_UST_EVENTS_H
-#define _LTTNG_UST_EVENTS_H
-
/*
- * lttng/ust-events.h
+ * SPDX-License-Identifier: MIT
*
- * Copyright 2010-2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* Holds LTTng per-session event registry.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
*/
+#ifndef _LTTNG_UST_EVENTS_H
+#define _LTTNG_UST_EVENTS_H
+
#include <urcu/list.h>
#include <urcu/hlist.h>
+#include <stddef.h>
#include <stdint.h>
+#include <lttng/ust-config.h>
#include <lttng/ust-abi.h>
#include <lttng/ust-tracer.h>
#include <lttng/ust-endian.h>
#include <float.h>
+#include <errno.h>
+#include <urcu/ref.h>
+#include <pthread.h>
+
+#ifndef LTTNG_PACKED
+#error "LTTNG_PACKED should be defined"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
#define LTTNG_UST_UUID_LEN 16
-struct ltt_channel;
-struct ltt_session;
+/*
+ * Tracepoint provider version. Compatibility based on the major number.
+ * Older tracepoint providers can always register to newer lttng-ust
+ * library, but the opposite is rejected: a newer tracepoint provider is
+ * rejected by an older lttng-ust library.
+ */
+#define LTTNG_UST_PROVIDER_MAJOR 2
+#define LTTNG_UST_PROVIDER_MINOR 0
+
+struct lttng_channel;
+struct lttng_session;
struct lttng_ust_lib_ring_buffer_ctx;
+struct lttng_ust_context_app;
+struct lttng_event_field;
+struct lttng_event_notifier;
+struct lttng_event_notifier_group;
/*
* Data structures used by tracepoint event declarations, and by the
LTTNG_CLIENT_METADATA = 0,
LTTNG_CLIENT_DISCARD = 1,
LTTNG_CLIENT_OVERWRITE = 2,
+ LTTNG_CLIENT_DISCARD_RT = 3,
+ LTTNG_CLIENT_OVERWRITE_RT = 4,
LTTNG_NR_CLIENT_TYPES,
};
/* Type description */
/* Update the astract_types name table in lttng-types.c along with this enum */
-enum abstract_types {
+enum lttng_abstract_types {
atype_integer,
- atype_enum,
- atype_array,
- atype_sequence,
+ atype_enum, /* legacy */
+ atype_array, /* legacy */
+ atype_sequence, /* legacy */
atype_string,
atype_float,
+ atype_dynamic,
+ atype_struct, /* legacy */
+ atype_enum_nestable,
+ atype_array_nestable,
+ atype_sequence_nestable,
+ atype_struct_nestable,
NR_ABSTRACT_TYPES,
};
NR_STRING_ENCODINGS,
};
+struct lttng_enum_value {
+ unsigned long long value;
+ unsigned int signedness:1;
+};
+
+enum lttng_enum_entry_options {
+ LTTNG_ENUM_ENTRY_OPTION_IS_AUTO = 1U << 0,
+};
+
#define LTTNG_UST_ENUM_ENTRY_PADDING 16
struct lttng_enum_entry {
- unsigned long long start, end; /* start and end are inclusive */
+ struct lttng_enum_value start, end; /* start and end are inclusive */
const char *string;
- char padding[LTTNG_UST_ENUM_ENTRY_PADDING];
+ union {
+ struct {
+ unsigned int options;
+ } LTTNG_PACKED extra;
+ char padding[LTTNG_UST_ENUM_ENTRY_PADDING];
+ } u;
};
#define __type_integer(_type, _byte_order, _base, _encoding) \
{ \
- .atype = atype_integer, \
- .u.basic.integer = \
+ .atype = atype_integer, \
+ .u = \
{ \
- .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, \
+ .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, \
+ } \
}, \
} \
#define __type_float(_type) \
{ \
- .atype = atype_float, \
- .u.basic._float = \
+ .atype = atype_float, \
+ .u = \
{ \
- .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, \
- }, \
+ ._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, \
+ } \
+ } \
} \
#define LTTNG_UST_FLOAT_TYPE_PADDING 24
char padding[LTTNG_UST_FLOAT_TYPE_PADDING];
};
+/* legacy */
#define LTTNG_UST_BASIC_TYPE_PADDING 128
union _lttng_basic_type {
- struct lttng_integer_type integer;
+ struct lttng_integer_type integer; /* legacy */
struct {
- const char *name;
- } enumeration;
+ const struct lttng_enum_desc *desc; /* Enumeration mapping */
+ struct lttng_integer_type container_type;
+ } enumeration; /* legacy */
struct {
enum lttng_string_encodings encoding;
- } string;
- struct lttng_float_type _float;
+ } string; /* legacy */
+ struct lttng_float_type _float; /* legacy */
char padding[LTTNG_UST_BASIC_TYPE_PADDING];
};
+/* legacy */
struct lttng_basic_type {
- enum abstract_types atype;
+ enum lttng_abstract_types atype;
union {
union _lttng_basic_type basic;
} u;
#define LTTNG_UST_TYPE_PADDING 128
struct lttng_type {
- enum abstract_types atype;
+ enum lttng_abstract_types atype;
union {
- union _lttng_basic_type basic;
+ /* provider ABI 2.0 */
+ struct lttng_integer_type integer;
+ struct lttng_float_type _float;
+ struct {
+ enum lttng_string_encodings encoding;
+ } string;
+ struct {
+ const struct lttng_enum_desc *desc; /* Enumeration mapping */
+ struct lttng_type *container_type;
+ } enum_nestable;
+ struct {
+ const struct lttng_type *elem_type;
+ unsigned int length; /* Num. elems. */
+ unsigned int alignment;
+ } array_nestable;
struct {
- struct lttng_basic_type elem_type;
- unsigned int length; /* num. elems. */
- } array;
+ const char *length_name; /* Length field name. */
+ const struct lttng_type *elem_type;
+ unsigned int alignment; /* Alignment before elements. */
+ } sequence_nestable;
struct {
- struct lttng_basic_type length_type;
- struct lttng_basic_type elem_type;
- } sequence;
+ unsigned int nr_fields;
+ const struct lttng_event_field *fields; /* Array of fields. */
+ unsigned int alignment;
+ } struct_nestable;
+
+ union {
+ /* legacy provider ABI 1.0 */
+ union _lttng_basic_type basic; /* legacy */
+ struct {
+ struct lttng_basic_type elem_type;
+ unsigned int length; /* Num. elems. */
+ } array; /* legacy */
+ struct {
+ struct lttng_basic_type length_type;
+ struct lttng_basic_type elem_type;
+ } sequence; /* legacy */
+ struct {
+ unsigned int nr_fields;
+ struct lttng_event_field *fields; /* Array of fields. */
+ } _struct; /* legacy */
+ } legacy;
char padding[LTTNG_UST_TYPE_PADDING];
} u;
};
#define LTTNG_UST_ENUM_TYPE_PADDING 24
-struct lttng_enum {
+struct lttng_enum_desc {
const char *name;
- struct lttng_type container_type;
const struct lttng_enum_entry *entries;
- unsigned int len;
+ unsigned int nr_entries;
char padding[LTTNG_UST_ENUM_TYPE_PADDING];
};
const char *name;
struct lttng_type type;
unsigned int nowrite; /* do not write into trace */
- char padding[LTTNG_UST_EVENT_FIELD_PADDING];
+ union {
+ struct {
+ unsigned int nofilter:1; /* do not consider for filter */
+ } ext;
+ char padding[LTTNG_UST_EVENT_FIELD_PADDING];
+ } u;
+};
+
+enum lttng_ust_dynamic_type {
+ LTTNG_UST_DYNAMIC_TYPE_NONE,
+ LTTNG_UST_DYNAMIC_TYPE_S8,
+ LTTNG_UST_DYNAMIC_TYPE_S16,
+ LTTNG_UST_DYNAMIC_TYPE_S32,
+ LTTNG_UST_DYNAMIC_TYPE_S64,
+ LTTNG_UST_DYNAMIC_TYPE_U8,
+ LTTNG_UST_DYNAMIC_TYPE_U16,
+ LTTNG_UST_DYNAMIC_TYPE_U32,
+ LTTNG_UST_DYNAMIC_TYPE_U64,
+ LTTNG_UST_DYNAMIC_TYPE_FLOAT,
+ LTTNG_UST_DYNAMIC_TYPE_DOUBLE,
+ LTTNG_UST_DYNAMIC_TYPE_STRING,
+ _NR_LTTNG_UST_DYNAMIC_TYPES,
+};
+
+struct lttng_ctx_value {
+ enum lttng_ust_dynamic_type sel;
+ union {
+ int64_t s64;
+ uint64_t u64;
+ const char *str;
+ double d;
+ } u;
};
+struct lttng_perf_counter_field;
+
#define LTTNG_UST_CTX_FIELD_PADDING 40
struct lttng_ctx_field {
struct lttng_event_field event_field;
- size_t (*get_size)(size_t offset);
+ size_t (*get_size)(struct lttng_ctx_field *field, size_t offset);
void (*record)(struct lttng_ctx_field *field,
struct lttng_ust_lib_ring_buffer_ctx *ctx,
- struct ltt_channel *chan);
+ struct lttng_channel *chan);
+ void (*get_value)(struct lttng_ctx_field *field,
+ struct lttng_ctx_value *value);
union {
+ struct lttng_perf_counter_field *perf_counter;
char padding[LTTNG_UST_CTX_FIELD_PADDING];
} u;
void (*destroy)(struct lttng_ctx_field *field);
+ char *field_name; /* Has ownership, dynamically allocated. */
};
-#define LTTNG_UST_CTX_PADDING 24
+#define LTTNG_UST_CTX_PADDING 20
struct lttng_ctx {
struct lttng_ctx_field *fields;
unsigned int nr_fields;
unsigned int allocated_fields;
+ unsigned int largest_align;
char padding[LTTNG_UST_CTX_PADDING];
};
union {
struct {
const char **model_emf_uri;
+ void (*event_notifier_callback)(void);
} ext;
char padding[LTTNG_UST_EVENT_DESC_PADDING];
} u;
};
-#define LTTNG_UST_PROBE_DESC_PADDING 40
+#define LTTNG_UST_PROBE_DESC_PADDING 12
struct lttng_probe_desc {
const char *provider;
const struct lttng_event_desc **event_desc;
unsigned int nr_events;
struct cds_list_head head; /* chain registered probes */
+ struct cds_list_head lazy_init_head;
+ int lazy; /* lazy registration */
+ uint32_t major;
+ uint32_t minor;
char padding[LTTNG_UST_PROBE_DESC_PADDING];
};
/* Data structures used by the tracer. */
-/*
- * Entry describing a per-session active wildcard, along with the event
- * attribute and channel information configuring the events that need to
- * be enabled.
- */
-struct session_wildcard {
- struct ltt_channel *chan;
- struct lttng_ctx *ctx; /* TODO */
- struct lttng_ust_event event_param;
- struct cds_list_head events; /* list of events enabled */
- struct cds_list_head list; /* per-session list of wildcards */
- struct cds_list_head session_list; /* node of session wildcard list */
- struct wildcard_entry *entry;
- struct lttng_ust_filter_bytecode *filter_bytecode;
- unsigned int enabled:1;
+enum lttng_enabler_format_type {
+ LTTNG_ENABLER_FORMAT_STAR_GLOB,
+ LTTNG_ENABLER_FORMAT_EVENT,
};
/*
- * Entry describing an active wildcard (per name) for all sessions.
+ * Enabler field, within whatever object is enabling an event. Target of
+ * backward reference.
*/
-struct wildcard_entry {
- /* node of global wildcards list */
- struct cds_list_head list;
- /* head of session list to which this wildcard apply */
- struct cds_list_head session_list;
- enum lttng_ust_loglevel_type loglevel_type;
- struct lttng_ust_filter_bytecode *filter_bytecode;
- int loglevel;
- char name[0];
+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_event event_param;
+ unsigned int enabled:1;
};
struct tp_list_entry {
};
struct ust_pending_probe;
-struct ltt_event;
-struct lttng_ust_filter_bytecode;
+struct lttng_event;
+
+/*
+ * Bytecode interpreter return value masks.
+ */
+enum lttng_bytecode_interpreter_ret {
+ LTTNG_INTERPRETER_DISCARD = 0,
+ LTTNG_INTERPRETER_RECORD_FLAG = (1ULL << 0),
+ /* Other bits are kept for future use. */
+};
+
+struct lttng_interpreter_output;
/*
- * ltt_event structure is referred to by the tracing fast path. It must be
- * kept small.
+ * This structure is used in the probes. More specifically, the `filter` and
+ * `node` fields are explicity used in the probes. When modifying this
+ * structure we must not change the layout of these two fields as it is
+ * considered ABI.
+ */
+struct lttng_bytecode_runtime {
+ /* Associated bytecode */
+ struct lttng_ust_bytecode_node *bc;
+ union {
+ uint64_t (*filter)(void *interpreter_data,
+ const char *interpreter_stack_data);
+ uint64_t (*capture)(void *interpreter_data,
+ const char *interpreter_stack_data,
+ struct lttng_interpreter_output *interpreter_output);
+ } interpreter_funcs;
+ int link_failed;
+ 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_ctx **pctx;
+};
+
+/*
+ * 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 */
+};
+
+/*
+ * lttng_event structure is referred to by the tracing fast path. It
+ * must be kept small.
*
* IMPORTANT: this structure is part of the ABI between the probe and
* UST. Fields need to be only added at the end, never reordered, never
* removed.
*/
-struct ltt_event {
- /* LTTng-UST 2.0 starts here */
+struct lttng_event {
unsigned int id;
- struct ltt_channel *chan;
+ struct lttng_channel *chan;
int enabled;
const struct lttng_event_desc *desc;
- int (*filter)(void *filter_data, const char *filter_stack_data);
struct lttng_ctx *ctx;
enum lttng_ust_instrumentation instrumentation;
- union {
- } u;
- struct cds_list_head list; /* Event list */
- struct cds_list_head wildcard_list; /* Event list for wildcard */
- struct ust_pending_probe *pending_probe;
- unsigned int metadata_dumped:1;
- /* LTTng-UST 2.1 starts here */
- struct lttng_ust_filter_bytecode *filter_bytecode;
- void *filter_data;
+ struct cds_list_head node; /* Event list in session */
+
+ /* list of struct lttng_bytecode_runtime, sorted by seqnum */
+ struct cds_list_head filter_bytecode_runtime_head;
+ int has_enablers_without_bytecode;
+ /* Backward references: list of lttng_enabler_ref (ref to enablers) */
+ struct cds_list_head enablers_ref_head;
+ struct cds_hlist_node hlist; /* session ht of events */
+ int registered; /* has reg'd tracepoint probe */
+};
+
+struct lttng_event_notifier {
+ uint64_t user_token;
+ uint64_t error_counter_index;
+ int enabled;
+ int registered; /* has reg'd tracepoint probe */
+ size_t num_captures; /* Needed to allocate the msgpack array. */
+ void (*notification_send)(struct lttng_event_notifier *event_notifier,
+ const char *stack_data);
+ struct cds_list_head filter_bytecode_runtime_head;
+ struct cds_list_head capture_bytecode_runtime_head;
+ int has_enablers_without_bytecode;
+ struct cds_list_head enablers_ref_head;
+ const struct lttng_event_desc *desc;
+ struct cds_hlist_node hlist; /* hashtable of event_notifiers */
+ struct cds_list_head node; /* event_notifier list in session */
+ struct lttng_event_notifier_group *group; /* weak ref */
+};
+
+struct lttng_enum {
+ const struct lttng_enum_desc *desc;
+ struct lttng_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 channel;
* UST. Fields need to be only added at the end, never reordered, never
* removed.
*/
-struct ltt_channel_ops {
- struct ltt_channel *(*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,
- int **shm_fd, int **wait_fd,
- uint64_t **memory_map_size,
- struct ltt_channel *chan_priv_init);
- 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);
+struct lttng_channel_ops {
+ struct lttng_channel *(*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_channel *chan);
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);
+ 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
*/
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);
+ void (*event_strcpy)(struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ const char *src, size_t len);
};
/*
* UST. Fields need to be only added at the end, never reordered, never
* removed.
*/
-struct ltt_channel {
+struct lttng_channel {
/*
* The pointers located in this private data are NOT safe to be
* dereferenced by the consumer. The only operations the
int enabled;
struct lttng_ctx *ctx;
/* Event ID management */
- struct ltt_session *session;
+ struct lttng_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;
+ struct cds_list_head node; /* Channel list in session */
+ const struct lttng_channel_ops *ops;
int header_type; /* 0: unset, 1: compact, 2: large */
struct lttng_ust_shm_handle *handle; /* shared-memory handle */
- unsigned int metadata_dumped:1;
- /* Channel ID, available for consumer too */
+ /* Channel ID */
unsigned int id;
- /* Copy of session UUID for consumer (availability through shm) */
+ enum lttng_ust_chan_type type;
unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
+ int tstate:1; /* Transient enable state */
+};
+
+#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);
+};
+
+#define LTTNG_UST_STACK_CTX_PADDING 32
+struct lttng_stack_ctx {
+ struct lttng_event *event;
+ struct lttng_ctx *chan_ctx; /* RCU dereferenced. */
+ struct lttng_ctx *event_ctx; /* RCU dereferenced. */
+ char padding[LTTNG_UST_STACK_CTX_PADDING];
+};
+
+#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];
};
/*
* UST. Fields need to be only added at the end, never reordered, never
* removed.
*/
-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 wildcards; /* Wildcard list head */
- struct cds_list_head list; /* Session list */
- unsigned int free_chan_id; /* Next chan ID to allocate */
- unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
- unsigned int metadata_dumped:1;
+struct lttng_session {
+ int active; /* Is trace session active ? */
+ 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 */
+
+ /* New UST 2.1 */
+ /* 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 */
+
+ /* New UST 2.4 */
+ int statedump_pending:1;
+
+ /* New UST 2.8 */
+ struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */
+ struct cds_list_head enums_head;
+ struct lttng_ctx *ctx; /* contexts for filters. */
+};
+
+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;
+};
+
+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_ctx *ctx; /* contexts for filters. */
+
+ struct lttng_counter *error_counter;
+ size_t error_counter_len;
};
-struct ltt_transport {
+struct lttng_transport {
char *name;
struct cds_list_head node;
- struct ltt_channel_ops ops;
+ struct lttng_channel_ops ops;
+ const struct lttng_ust_lib_ring_buffer_config *client_config;
};
-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 lttng_counter_transport {
+ char *name;
+ struct cds_list_head node;
+ struct lttng_counter_ops ops;
+ const struct lib_counter_config *client_config;
+};
+
+struct lttng_session *lttng_session_create(void);
+int lttng_session_enable(struct lttng_session *session);
+int lttng_session_disable(struct lttng_session *session);
+int lttng_session_statedump(struct lttng_session *session);
+void lttng_session_destroy(struct lttng_session *session);
-struct ltt_channel *ltt_channel_create(struct ltt_session *session,
+struct lttng_channel *lttng_channel_create(struct lttng_session *session,
const char *transport_name,
void *buf_addr,
size_t subbuf_size, size_t num_subbuf,
unsigned int read_timer_interval,
int **shm_fd, int **wait_fd,
uint64_t **memory_map_size,
- struct ltt_channel *chan_priv_init);
-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);
-
-int ltt_event_create(struct ltt_channel *chan,
- struct lttng_ust_event *event_param,
- struct ltt_event **event);
-
-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);
+ struct lttng_channel *chan_priv_init);
+
+int lttng_channel_enable(struct lttng_channel *channel);
+int lttng_channel_disable(struct lttng_channel *channel);
+
+int lttng_attach_context(struct lttng_ust_context *context_param,
+ union ust_args *uargs,
+ struct lttng_ctx **ctx, struct lttng_session *session);
+void lttng_transport_register(struct lttng_transport *transport);
+void lttng_transport_unregister(struct lttng_transport *transport);
+
+int lttng_probe_register(struct lttng_probe_desc *desc);
+void lttng_probe_unregister(struct lttng_probe_desc *desc);
+void lttng_probe_provider_unregister_events(struct lttng_probe_desc *desc);
+int lttng_fix_pending_events(void);
+int lttng_probes_init(void);
+void lttng_probes_exit(void);
int lttng_find_context(struct lttng_ctx *ctx, const char *name);
+int lttng_get_context_index(struct lttng_ctx *ctx, const char *name);
struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p);
+void lttng_context_update(struct lttng_ctx *ctx);
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_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);
+int lttng_add_ip_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_dyntest_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx);
void lttng_context_vtid_reset(void);
void lttng_context_vpid_reset(void);
-
-extern const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_metadata;
-extern const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_discard;
-extern const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_overwrite;
-
-struct ltt_transport *ltt_transport_find(const char *name);
-
-int ltt_probes_get_event_list(struct lttng_ust_tracepoint_list *list);
-void ltt_probes_prune_event_list(struct lttng_ust_tracepoint_list *list);
+void lttng_context_procname_reset(void);
+void lttng_context_cgroup_ns_reset(void);
+void lttng_context_ipc_ns_reset(void);
+void lttng_context_mnt_ns_reset(void);
+void lttng_context_net_ns_reset(void);
+void lttng_context_pid_ns_reset(void);
+void lttng_context_user_ns_reset(void);
+void lttng_context_uts_ns_reset(void);
+void lttng_context_vuid_reset(void);
+void lttng_context_veuid_reset(void);
+void lttng_context_vsuid_reset(void);
+void lttng_context_vgid_reset(void);
+void lttng_context_vegid_reset(void);
+void lttng_context_vsgid_reset(void);
+
+#ifdef LTTNG_UST_HAVE_PERF_EVENT
+int lttng_add_perf_counter_to_ctx(uint32_t type,
+ uint64_t config,
+ const char *name,
+ struct lttng_ctx **ctx);
+int lttng_perf_counter_init(void);
+void lttng_perf_counter_exit(void);
+#else /* #ifdef LTTNG_UST_HAVE_PERF_EVENT */
+static inline
+int lttng_add_perf_counter_to_ctx(uint32_t type,
+ uint64_t config,
+ const char *name,
+ struct lttng_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 LTTNG_UST_HAVE_PERF_EVENT */
+
+extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_metadata;
+extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_discard;
+extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_overwrite;
+
+struct lttng_transport *lttng_transport_find(const char *name);
+
+int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list);
+void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list);
struct lttng_ust_tracepoint_iter *
lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list);
-int ltt_probes_get_field_list(struct lttng_ust_field_list *list);
-void ltt_probes_prune_field_list(struct lttng_ust_field_list *list);
+int lttng_probes_get_field_list(struct lttng_ust_field_list *list);
+void lttng_probes_prune_field_list(struct lttng_ust_field_list *list);
struct lttng_ust_field_iter *
lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list);
-int ltt_wildcard_enable(struct session_wildcard *wildcard);
-int ltt_wildcard_disable(struct session_wildcard *wildcard);
-int ltt_wildcard_create(struct ltt_channel *chan,
- struct lttng_ust_event *event_param,
- struct session_wildcard **sl);
-int ltt_loglevel_match(const struct lttng_event_desc *desc,
- enum lttng_ust_loglevel_type req_type,
- int req_loglevel);
-void ltt_probes_create_wildcard_events(struct wildcard_entry *entry,
- struct session_wildcard *wildcard);
-int lttng_filter_event_attach_bytecode(struct ltt_event *event,
- struct lttng_ust_filter_bytecode *filter);
-int lttng_filter_wildcard_attach_bytecode(struct session_wildcard *wildcard,
- struct lttng_ust_filter_bytecode *filter);
-void lttng_filter_event_link_bytecode(struct ltt_event *event,
- struct lttng_ust_filter_bytecode *filter_bytecode);
-void lttng_filter_wildcard_link_bytecode(struct session_wildcard *wildcard);
+void lttng_free_event_filter_runtime(struct lttng_event *event);
+
+struct cds_list_head *lttng_get_probe_list_head(void);
+int lttng_session_active(void);
+
+typedef int (*t_statedump_func_ptr)(struct lttng_session *session);
+void lttng_handle_pending_statedump(void *owner);
+struct cds_list_head *_lttng_get_sessions(void);
+
+struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_session *session,
+ const struct lttng_enum_desc *enum_desc);
+
+void lttng_ust_dl_update(void *ip);
+void lttng_ust_fixup_fd_tracker_tls(void);
+
+#ifdef __cplusplus
+}
+#endif
#endif /* _LTTNG_UST_EVENTS_H */
projects / lttng-ust.git / blobdiff