X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-events.h;h=b44fba59de9d9428f955eb4946205b62cd320c28;hb=68bb7559b0041c38158c9ed0528d91d655e7eb6c;hp=1db8e585f1f5d86dac05f7f75b17ba8c723e1ec5;hpb=d56fa7193ab7fa9c5ce1a35a0faf77ed04c80d20;p=lttng-ust.git diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h index 1db8e585..b44fba59 100644 --- a/include/lttng/ust-events.h +++ b/include/lttng/ust-events.h @@ -1,72 +1,73 @@ -#ifndef _LTTNG_UST_EVENTS_H -#define _LTTNG_UST_EVENTS_H - /* - * lttng/ust-events.h + * SPDX-License-Identifier: MIT * - * Copyright 2010-2012 (c) - Mathieu Desnoyers + * Copyright (C) 2010-2012 Mathieu Desnoyers * * 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. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. */ +#ifndef _LTTNG_UST_EVENTS_H +#define _LTTNG_UST_EVENTS_H + #include #include +#include #include #include #include #include #include +#include +#include +#include + +#ifndef LTTNG_PACKED +#error "LTTNG_PACKED should be defined" +#endif + +#ifdef __cplusplus +extern "C" { +#endif #define LTTNG_UST_UUID_LEN 16 +/* + * 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_event_field; +struct lttng_event_notifier; +struct lttng_event_notifier_group; /* * Data structures used by tracepoint event declarations, and by the * tracer. Those structures have padding for future extension. */ -/* - * LTTng client type enumeration. Used by the consumer to map the - * callbacks from its own address space. - */ -enum lttng_client_types { - LTTNG_CLIENT_METADATA = 0, - LTTNG_CLIENT_DISCARD = 1, - LTTNG_CLIENT_OVERWRITE = 2, - LTTNG_NR_CLIENT_TYPES, -}; - /* Type description */ /* Update the astract_types name table in lttng-types.c along with this enum */ 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, }; @@ -78,24 +79,41 @@ enum lttng_string_encodings { 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, \ + } \ }, \ } \ @@ -121,15 +139,18 @@ struct lttng_integer_type { #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 @@ -141,19 +162,22 @@ struct lttng_float_type { 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 lttng_abstract_types atype; union { @@ -165,25 +189,57 @@ struct lttng_basic_type { struct lttng_type { 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]; }; @@ -200,27 +256,65 @@ struct lttng_event_field { 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 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]; }; @@ -236,100 +330,61 @@ struct lttng_event_desc { 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. */ -enum lttng_enabler_type { - LTTNG_ENABLER_WILDCARD, - LTTNG_ENABLER_EVENT, -}; - /* - * Enabler field, within whatever object is enabling an event. Target of - * backward reference. + * Bytecode interpreter return value masks. */ -struct lttng_enabler { - enum lttng_enabler_type type; - - /* head list of struct lttng_ust_filter_bytecode_node */ - struct cds_list_head filter_bytecode_head; - struct cds_list_head node; /* per-session list of enablers */ - - struct lttng_ust_event event_param; - struct lttng_channel *chan; - struct lttng_ctx *ctx; - unsigned int enabled:1; -}; - -struct tp_list_entry { - struct lttng_ust_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_field_iter field; - struct cds_list_head head; -}; - -struct lttng_ust_field_list { - struct tp_field_list_entry *iter; - struct cds_list_head head; +enum lttng_bytecode_interpreter_ret { + LTTNG_INTERPRETER_DISCARD = 0, + LTTNG_INTERPRETER_RECORD_FLAG = (1ULL << 0), + /* Other bits are kept for future use. */ }; -struct ust_pending_probe; -struct lttng_event; - -struct lttng_ust_filter_bytecode_node { - struct cds_list_head node; - struct lttng_enabler *enabler; - /* - * struct lttng_ust_filter_bytecode has var. sized array, must - * be last field. - */ - struct lttng_ust_filter_bytecode bc; -}; +struct lttng_interpreter_output; /* - * Filter return value masks. + * 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. */ -enum lttng_filter_ret { - LTTNG_FILTER_DISCARD = 0, - LTTNG_FILTER_RECORD_FLAG = (1ULL << 0), - /* Other bits are kept for future use. */ -}; - struct lttng_bytecode_runtime { /* Associated bytecode */ - struct lttng_ust_filter_bytecode_node *bc; - uint64_t (*filter)(void *filter_data, const char *filter_stack_data); + 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 */ -}; - -/* - * Objects in a linked-list of enablers, owned by an event. - */ -struct lttng_enabler_ref { - struct cds_list_head node; /* enabler ref list */ - struct lttng_enabler *ref; /* backward ref */ + /* + * Pointer to a URCU-protected pointer owned by an `struct + * lttng_session`or `struct lttng_event_notifier_group`. + */ + struct lttng_ctx **pctx; }; /* @@ -340,29 +395,45 @@ struct lttng_enabler_ref { * UST. Fields need to be only added at the end, never reordered, never * removed. */ + +struct lttng_ust_event_private; + struct lttng_event { - /* LTTng-UST 2.0 starts here */ + struct lttng_ust_event_private *priv; /* Private event interface */ + unsigned int id; - struct lttng_channel *chan; int enabled; - const struct lttng_event_desc *desc; - void *_deprecated1; + int has_enablers_without_bytecode; + /* list of struct lttng_bytecode_runtime, sorted by seqnum */ + struct cds_list_head filter_bytecode_runtime_head; + struct lttng_channel *chan; struct lttng_ctx *ctx; - enum lttng_ust_instrumentation instrumentation; - union { - } u; - struct cds_list_head node; /* Event list in session */ - struct cds_list_head _deprecated2; - void *_deprecated3; - unsigned int metadata_dumped:1; +}; - /* LTTng-UST 2.1 starts here */ - /* list of struct lttng_bytecode_runtime, sorted by seqnum */ - struct cds_list_head bytecode_runtime_head; +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; - /* 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 */ + 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; @@ -375,25 +446,20 @@ struct lttng_ust_shm_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, - int **shm_fd, int **wait_fd, - uint64_t **memory_map_size, - struct lttng_channel *chan_priv_init); - void (*channel_destroy)(struct lttng_channel *lttng_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); + 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 @@ -401,11 +467,11 @@ struct lttng_channel_ops { */ 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); }; /* @@ -426,27 +492,68 @@ struct lttng_channel { /* Event ID management */ 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 node; /* Channel list in session */ - struct lttng_channel_ops *ops; + 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 */ +}; + +struct lttng_counter_dimension; + +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_EVENT_HT_BITS 6 +#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]; +}; + /* * 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 @@ -456,110 +563,42 @@ struct lttng_session { int active; /* Is trace session active ? */ int been_active; /* Been active ? */ int objd; /* Object associated */ - struct lttng_channel *metadata; /* Metadata channel */ struct cds_list_head chan_head; /* Channel list head */ struct cds_list_head events_head; /* list of events */ - struct cds_list_head _deprecated1; struct cds_list_head node; /* 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; /* 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 */ -struct lttng_transport { - char *name; - struct cds_list_head node; - struct lttng_channel_ops ops; -}; + /* New UST 2.4 */ + int statedump_pending:1; -struct lttng_session *lttng_session_create(void); -int lttng_session_enable(struct lttng_session *session); -int lttng_session_disable(struct lttng_session *session); -void lttng_session_destroy(struct lttng_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 switch_timer_interval, - unsigned int read_timer_interval, - int **shm_fd, int **wait_fd, - uint64_t **memory_map_size, - struct lttng_channel *chan_priv_init); -struct lttng_channel *lttng_global_channel_create(struct lttng_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 lttng_channel_enable(struct lttng_channel *channel); -int lttng_channel_disable(struct lttng_channel *channel); - -struct lttng_enabler *lttng_enabler_create(enum lttng_enabler_type type, - struct lttng_ust_event *event_param, - struct lttng_channel *chan); -int lttng_enabler_enable(struct lttng_enabler *enabler); -int lttng_enabler_disable(struct lttng_enabler *enabler); -int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler, - struct lttng_ust_filter_bytecode_node *bytecode); -int lttng_enabler_attach_context(struct lttng_enabler *enabler, - struct lttng_ust_context *ctx); - -int lttng_attach_context(struct lttng_ust_context *context_param, - struct lttng_ctx **ctx, struct lttng_session *session); - -void lttng_transport_register(struct lttng_transport *transport); -void lttng_transport_unregister(struct lttng_transport *transport); - -void synchronize_trace(void); + /* 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. */ +}; int lttng_probe_register(struct lttng_probe_desc *desc); void lttng_probe_unregister(struct lttng_probe_desc *desc); -int lttng_fix_pending_event_desc(const struct lttng_event_desc *desc); -const struct lttng_event_desc *lttng_event_get(const char *name); -void lttng_event_put(const struct lttng_event_desc *desc); -int lttng_probes_init(void); -void lttng_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); - -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; + +/* + * Can be used by applications that change their procname to clear the ust cached value. + */ +void lttng_context_procname_reset(void); 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 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); - -void lttng_filter_event_link_bytecode(struct lttng_event *event); -void lttng_enabler_event_link_bytecode(struct lttng_event *event, - struct lttng_enabler *enabler); -void lttng_free_event_filter_runtime(struct lttng_event *event); -void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime); - -struct cds_list_head *lttng_get_probe_list_head(void); +int lttng_session_active(void); + +void lttng_ust_dl_update(void *ip); + +#ifdef __cplusplus +} +#endif #endif /* _LTTNG_UST_EVENTS_H */