X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-events.h;h=40955e2d385e34f5c6f5b04ff6e1279a9c4bcd90;hb=14b545e3dc23d01d7189372c7381c7e77e3b5afb;hp=e45a6a7187621afc1a09175cacf68409cbc52f23;hpb=21af05a99efabef4da5db10dfb41139873eb9692;p=lttng-ust.git diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h index e45a6a71..40955e2d 100644 --- a/include/lttng/ust-events.h +++ b/include/lttng/ust-events.h @@ -17,6 +17,14 @@ * * 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 @@ -29,6 +37,15 @@ #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; @@ -46,6 +63,8 @@ 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, }; @@ -195,6 +214,12 @@ struct lttng_event_field { char padding[LTTNG_UST_EVENT_FIELD_PADDING]; }; +union lttng_ctx_value { + int64_t s64; + const char *str; + double d; +}; + #define LTTNG_UST_CTX_FIELD_PADDING 40 struct lttng_ctx_field { struct lttng_event_field event_field; @@ -202,6 +227,8 @@ 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 { char padding[LTTNG_UST_CTX_FIELD_PADDING]; } u; @@ -233,12 +260,16 @@ struct lttng_event_desc { } 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]; }; @@ -291,14 +322,27 @@ struct lttng_event; struct lttng_ust_filter_bytecode_node { struct cds_list_head node; - struct lttng_ust_filter_bytecode bc; struct lttng_enabler *enabler; + /* + * struct lttng_ust_filter_bytecode has var. sized array, must + * be last field. + */ + struct lttng_ust_filter_bytecode bc; +}; + +/* + * Filter return value masks. + */ +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; - int (*filter)(void *filter_data, const char *filter_stack_data); + 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 */ }; @@ -333,14 +377,16 @@ struct lttng_event { struct cds_list_head node; /* Event list in session */ struct cds_list_head _deprecated2; void *_deprecated3; - unsigned int metadata_dumped:1; + 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 channel; @@ -353,25 +399,20 @@ 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); + void (*channel_destroy)(struct lttng_channel *chan); + void *_deprecated1; + 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 @@ -404,21 +445,22 @@ 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 */ + unsigned int _deprecated1; + unsigned int _deprecated2; 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; + unsigned int _deprecated3:1; - /* 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_UST_EVENT_HT_BITS 6 +#define LTTNG_UST_EVENT_HT_BITS 12 #define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS) struct lttng_ust_event_ht { @@ -434,24 +476,27 @@ struct lttng_session { int active; /* Is trace session active ? */ int been_active; /* Been active ? */ int objd; /* Object associated */ - struct lttng_channel *metadata; /* Metadata channel */ + void *_deprecated1; 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 _deprecated2; 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; + 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 */ }; 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); @@ -468,13 +513,6 @@ struct lttng_channel *lttng_channel_create(struct lttng_session *session, 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); @@ -491,6 +529,9 @@ int lttng_enabler_attach_context(struct lttng_enabler *enabler, 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); @@ -499,12 +540,11 @@ 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); -const struct lttng_event_desc *lttng_event_get(const char *name); -void lttng_event_put(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_remove_context_field(struct lttng_ctx **ctx_p, struct lttng_ctx_field *field); @@ -538,5 +578,6 @@ 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); #endif /* _LTTNG_UST_EVENTS_H */