X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-events.h;h=019b0ebb02af5512c893cfe72147963eec88d3cb;hb=35ac38cb4cc188253c600766882b7a833f5a81ee;hp=5c649e73969b3aa6a978f889d829e3e3583db9c1;hpb=51489cadd9c38c10261bdbab9b5e72803c95a732;p=lttng-ust.git diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h index 5c649e73..019b0ebb 100644 --- a/include/lttng/ust-events.h +++ b/include/lttng/ust-events.h @@ -4,25 +4,66 @@ /* * lttng/ust-events.h * - * Copyright 2010 (c) - Mathieu Desnoyers + * Copyright 2010-2012 (c) - Mathieu Desnoyers * * Holds LTTng per-session event registry. * - * Dual LGPL v2.1/GPL v2 license. + * 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. */ #include -#include +#include #include +#include #include #include -#include +#include #include -#include +#include +#include +#include + +#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 1 +#define LTTNG_UST_PROVIDER_MINOR 0 -struct ltt_channel; -struct ltt_session; +struct lttng_channel; +struct lttng_session; struct lttng_ust_lib_ring_buffer_ctx; +struct lttng_ust_context_app; +struct lttng_event_field; + +/* + * 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 @@ -32,19 +73,23 @@ enum lttng_client_types { 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_string, atype_float, + atype_dynamic, + atype_struct, NR_ABSTRACT_TYPES, }; @@ -56,25 +101,48 @@ 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; + 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, \ + .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, \ + } \ + } \ }, \ } \ +#define LTTNG_UST_INTEGER_TYPE_PADDING 24 struct lttng_integer_type { unsigned int size; /* in bits */ unsigned short alignment; /* in bits */ @@ -82,6 +150,7 @@ struct lttng_integer_type { unsigned int reverse_byte_order:1; unsigned int base; /* 2, 8, 10, 16, for pretty print */ enum lttng_string_encodings encoding; + char padding[LTTNG_UST_INTEGER_TYPE_PADDING]; }; /* @@ -95,44 +164,56 @@ 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, \ + .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, \ + } \ + } \ }, \ } \ +#define LTTNG_UST_FLOAT_TYPE_PADDING 24 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; + char padding[LTTNG_UST_FLOAT_TYPE_PADDING]; }; +#define LTTNG_UST_BASIC_TYPE_PADDING 128 union _lttng_basic_type { struct lttng_integer_type integer; struct { - const char *name; + const struct lttng_enum_desc *desc; /* Enumeration mapping */ + struct lttng_integer_type container_type; } enumeration; struct { enum lttng_string_encodings encoding; } string; struct lttng_float_type _float; + char padding[LTTNG_UST_BASIC_TYPE_PADDING]; }; 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; struct { @@ -143,99 +224,284 @@ struct lttng_type { struct lttng_basic_type length_type; struct lttng_basic_type elem_type; } sequence; + struct { + uint32_t nr_fields; + struct lttng_event_field *fields; /* Array of fields. */ + } _struct; + char padding[LTTNG_UST_TYPE_PADDING]; } u; }; -struct lttng_enum { +#define LTTNG_UST_ENUM_TYPE_PADDING 24 +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]; }; -/* Event field description */ +/* + * Event field description + * + * 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. + */ +#define LTTNG_UST_EVENT_FIELD_PADDING 28 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]; }; +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; + 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 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]; }; +#define LTTNG_UST_EVENT_DESC_PADDING 40 struct lttng_event_desc { const char *name; - void *probe_callback; + void (*probe_callback)(void); const struct lttng_event_ctx *ctx; /* context */ const struct lttng_event_field *fields; /* event payload */ unsigned int nr_fields; + const int **loglevel; + const char *signature; /* Argument types/names received */ + union { + struct { + const char **model_emf_uri; + } ext; + char padding[LTTNG_UST_EVENT_DESC_PADDING]; + } u; }; +#define LTTNG_UST_PROBE_DESC_PADDING 12 struct lttng_probe_desc { - const struct lttng_event_desc *event_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_STAR_GLOB, + LTTNG_ENABLER_EVENT, +}; + +/* + * Enabler field, within whatever object is enabling an event. Target of + * backward reference. + */ +struct lttng_enabler { + enum lttng_enabler_type 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 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; }; 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_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_event_exclusion excluder; +}; /* - * ltt_event structure is referred to by the tracing fast path. It must be - * kept small. + * Filter return value masks. */ -struct ltt_event { +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); + int link_failed; + struct cds_list_head node; /* list of bytecode runtime in event */ + struct lttng_session *session; +}; + +/* + * 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 */ +}; + +/* + * 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 lttng_event { + /* LTTng-UST 2.0 starts here */ unsigned int id; - struct ltt_channel *chan; + struct lttng_channel *chan; int enabled; const struct lttng_event_desc *desc; - void *filter; + void *_deprecated1; 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 cds_list_head node; /* Event list in session */ + struct cds_list_head _deprecated2; + void *_deprecated3; + unsigned int _deprecated4:1; + + /* LTTng-UST 2.1 starts here */ + /* list of struct lttng_bytecode_runtime, sorted by seqnum */ + struct cds_list_head 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_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; struct lttng_ust_shm_handle; -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); +/* + * 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 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); + union { + void *_deprecated1; + unsigned long has_strcpy:1; /* ABI has strcpy */ + } u; + void *_deprecated2; 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 @@ -248,9 +514,16 @@ struct ltt_channel_ops { 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); }; -struct ltt_channel { +/* + * 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 lttng_channel { /* * The pointers located in this private data are NOT safe to be * dereferenced by the consumer. The only operations the @@ -261,91 +534,136 @@ struct ltt_channel { 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; + unsigned int _deprecated1; + unsigned int _deprecated2; + 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 */ - int metadata_dumped:1; + unsigned int _deprecated3:1; - /* Channel ID, available for consumer too */ + /* Channel ID */ unsigned int id; - /* Copy of session UUID for consumer (availability through shm) */ - uuid_t uuid; /* Trace session unique ID */ + enum lttng_ust_chan_type type; + unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ + int tstate:1; /* Transient enable state */ }; -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; +#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]; }; -struct ltt_transport { - char *name; - struct cds_list_head node; - struct ltt_channel_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]; }; -struct ltt_tracepoint_list { - struct tracepoint_iter iter; - int got_first; +#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 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); +/* + * 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 lttng_session { + int active; /* Is trace session active ? */ + int been_active; /* Been active ? */ + int objd; /* Object associated */ + void *_deprecated1; + struct cds_list_head chan_head; /* Channel list head */ + struct cds_list_head events_head; /* list of events */ + struct cds_list_head _deprecated2; + struct cds_list_head node; /* Session list */ + int _deprecated3; + unsigned int _deprecated4:1; + + /* 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 */ + + /* 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 ltt_channel *ltt_channel_create(struct ltt_session *session, +struct lttng_transport { + char *name; + struct cds_list_head node; + struct lttng_channel_ops ops; + const struct lttng_ust_lib_ring_buffer_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 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 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); - -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); + int **shm_fd, int **wait_fd, + uint64_t **memory_map_size, + struct lttng_channel *chan_priv_init); + +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_enabler_attach_exclusion(struct lttng_enabler *enabler, + struct lttng_ust_excluder_node *excluder); + +int lttng_attach_context(struct lttng_ust_context *context_param, + union ust_args *uargs, + struct lttng_ctx **ctx, struct lttng_session *session); +int lttng_session_context_init(struct lttng_ctx **ctx); + +void lttng_transport_register(struct lttng_transport *transport); +void lttng_transport_unregister(struct lttng_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_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); @@ -353,14 +671,79 @@ 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); +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); void lttng_context_vtid_reset(void); void lttng_context_vpid_reset(void); -const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_metadata; -const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_discard; -const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_overwrite; - -struct cds_list_head ltt_transport_list; -struct ltt_transport *ltt_transport_find(const char *name); +#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 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); + +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(struct lttng_session *session, + const char *enum_name); + +void lttng_ust_dl_update(void *ip); +void lttng_ust_fixup_fd_tracker_tls(void); + +/* For backward compatibility. Leave those exported symbols in place. */ +extern struct lttng_ctx *lttng_static_ctx; +void lttng_context_init(void); +void lttng_context_exit(void); + +#ifdef __cplusplus +} +#endif #endif /* _LTTNG_UST_EVENTS_H */