X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-events.h;h=e4b4edeba005e25e926a54a7674d51915e766d65;hb=a9ff648cc;hp=05966ff69e344218daf0fa29b9e401843e3b7eac;hpb=13b21cd60df2abab292653cead980ef27dbfab08;p=lttng-ust.git diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h index 05966ff6..e4b4edeb 100644 --- a/include/lttng/ust-events.h +++ b/include/lttng/ust-events.h @@ -30,13 +30,30 @@ #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 lttng_channel; struct lttng_session; struct lttng_ust_lib_ring_buffer_ctx; @@ -54,6 +71,8 @@ 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, }; @@ -87,15 +106,21 @@ struct lttng_enum_entry { #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, \ + } \ + } \ }, \ } \ @@ -121,14 +146,20 @@ 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, \ + } \ + } \ }, \ } \ @@ -203,6 +234,14 @@ struct lttng_event_field { char padding[LTTNG_UST_EVENT_FIELD_PADDING]; }; +union lttng_ctx_value { + int64_t s64; + const char *str; + double d; +}; + +struct lttng_perf_counter_field; + #define LTTNG_UST_CTX_FIELD_PADDING 40 struct lttng_ctx_field { struct lttng_event_field event_field; @@ -210,17 +249,21 @@ struct lttng_ctx_field { 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, + union 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); }; -#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]; }; @@ -241,7 +284,7 @@ struct lttng_event_desc { } u; }; -#define LTTNG_UST_PROBE_DESC_PADDING 20 +#define LTTNG_UST_PROBE_DESC_PADDING 12 struct lttng_probe_desc { const char *provider; const struct lttng_event_desc **event_desc; @@ -249,6 +292,8 @@ struct lttng_probe_desc { 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]; }; @@ -268,6 +313,8 @@ struct lttng_enabler { /* 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; @@ -309,6 +356,15 @@ struct lttng_ust_filter_bytecode_node { 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; +}; /* * Filter return value masks. */ @@ -365,6 +421,7 @@ struct lttng_event { /* 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 channel; @@ -381,8 +438,15 @@ struct lttng_channel_ops { size_t subbuf_size, size_t num_subbuf, unsigned int switch_timer_interval, unsigned int read_timer_interval, - unsigned char *uuid); + unsigned char *uuid, + uint32_t chan_id, + const char *shm_path); 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); @@ -400,6 +464,8 @@ struct lttng_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); }; /* @@ -432,6 +498,7 @@ struct lttng_channel { unsigned int id; 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_UST_EVENT_HT_BITS 12 @@ -463,6 +530,10 @@ struct lttng_session { 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; }; struct lttng_transport { @@ -499,9 +570,14 @@ 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, struct lttng_ctx **ctx, struct lttng_session *session); +void lttng_context_init(void); +void lttng_context_exit(void); +extern struct lttng_ctx *lttng_static_ctx; /* Used by filtering */ void lttng_transport_register(struct lttng_transport *transport); void lttng_transport_unregister(struct lttng_transport *transport); @@ -510,11 +586,13 @@ void synchronize_trace(void); 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); +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); @@ -522,12 +600,40 @@ 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); 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; +#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); @@ -549,4 +655,12 @@ 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); + +#ifdef __cplusplus +} +#endif + #endif /* _LTTNG_UST_EVENTS_H */