X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Fust%2Flttng-events.h;fp=include%2Fust%2Flttng-events.h;h=0000000000000000000000000000000000000000;hb=4318ae1be57eb7983ab4857a7a8eeb4a030a8216;hp=e028f6b2ce43de7e1ff71c5dd4e5904cfa3ebbba;hpb=d4419b81b243bc3a6bdd4a09b3ca2216d044a1c7;p=ust.git diff --git a/include/ust/lttng-events.h b/include/ust/lttng-events.h deleted file mode 100644 index e028f6b..0000000 --- a/include/ust/lttng-events.h +++ /dev/null @@ -1,331 +0,0 @@ -#ifndef _UST_LTTNG_EVENTS_H -#define _UST_LTTNG_EVENTS_H - -/* - * ust/lttng-events.h - * - * Copyright 2010 (c) - Mathieu Desnoyers - * - * Holds LTTng per-session event registry. - * - * Dual LGPL v2.1/GPL v2 license. - */ - -#include -#include -#include -#include -#include -#include -#include - -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 */