X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Ftrace-ust.h;h=06d0202d1d1fdb323f94baafd8577c8e58714f29;hp=f01f82d7dfdee36c9067a336b8e1c7a0e2352906;hb=7724731bcd8d8e340adc41bc46a5994668679e85;hpb=ce2a9e76964f3bd53abb652299e5b00f824172ff diff --git a/src/bin/lttng-sessiond/trace-ust.h b/src/bin/lttng-sessiond/trace-ust.h index f01f82d7d..06d0202d1 100644 --- a/src/bin/lttng-sessiond/trace-ust.h +++ b/src/bin/lttng-sessiond/trace-ust.h @@ -27,49 +27,44 @@ #include #include "consumer.h" +#include "jul.h" #include "ust-ctl.h" -/* UST Stream list */ -struct ltt_ust_stream_list { - unsigned int count; - struct cds_list_head head; +struct ltt_ust_ht_key { + const char *name; + const struct lttng_filter_bytecode *filter; + enum lttng_ust_loglevel_type loglevel; + const struct lttng_event_exclusion *exclusion; }; /* Context hash table nodes */ struct ltt_ust_context { struct lttng_ust_context ctx; struct lttng_ht_node_ulong node; + struct cds_list_head list; }; /* UST event */ struct ltt_ust_event { unsigned int enabled; struct lttng_ust_event attr; - struct lttng_ht *ctx; struct lttng_ht_node_str node; struct lttng_ust_filter_bytecode *filter; -}; - -/* UST stream */ -struct ltt_ust_stream { - int handle; - char pathname[PATH_MAX]; - /* Format is %s_%d respectively channel name and CPU number. */ - char name[DEFAULT_STREAM_NAME_LEN]; - struct lttng_ust_object_data *obj; - /* Using a list of streams to keep order. */ - struct cds_list_head list; + const struct lttng_event_exclusion *exclusion; }; /* UST channel */ struct ltt_ust_channel { + uint64_t id; /* unique id per session. */ unsigned int enabled; char name[LTTNG_UST_SYM_NAME_LEN]; - char pathname[PATH_MAX]; - struct lttng_ust_channel attr; + struct lttng_ust_channel_attr attr; struct lttng_ht *ctx; + struct cds_list_head ctx_list; struct lttng_ht *events; struct lttng_ht_node_str node; + uint64_t tracefile_size; + uint64_t tracefile_count; }; /* UST Metadata */ @@ -77,42 +72,22 @@ struct ltt_ust_metadata { int handle; struct lttng_ust_object_data *obj; char pathname[PATH_MAX]; /* Trace file path name */ - struct lttng_ust_channel attr; + struct lttng_ust_channel_attr attr; struct lttng_ust_object_data *stream_obj; }; /* UST domain global (LTTNG_DOMAIN_UST) */ struct ltt_ust_domain_global { struct lttng_ht *channels; -}; - -/* UST domain pid (LTTNG_DOMAIN_UST_PID) */ -struct ltt_ust_domain_pid { - pid_t pid; - struct lttng_ht *channels; - struct lttng_ht_node_ulong node; -}; - -/* UST domain exec name (LTTNG_DOMAIN_UST_EXEC_NAME) */ -struct ltt_ust_domain_exec { - char exec_name[LTTNG_UST_SYM_NAME_LEN]; - struct lttng_ht *channels; - struct lttng_ht_node_str node; + struct cds_list_head registry_buffer_uid_list; }; /* UST session */ struct ltt_ust_session { - int id; /* Unique identifier of session */ + uint64_t id; /* Unique identifier of session */ int start_trace; - char pathname[PATH_MAX]; struct ltt_ust_domain_global domain_global; - /* - * Those two hash tables contains data for a specific UST domain and each - * contains a HT of channels. See ltt_ust_domain_exec and - * ltt_ust_domain_pid data structures. - */ - struct lttng_ht *domain_pid; - struct lttng_ht *domain_exec; + struct jul_domain domain_jul; /* UID/GID of the user owning the session */ uid_t uid; gid_t gid; @@ -124,29 +99,80 @@ struct ltt_ust_session { */ struct consumer_output *consumer; struct consumer_output *tmp_consumer; + /* Sequence number for filters so the tracer knows the ordering. */ + uint64_t filter_seq_num; + /* This indicates which type of buffer this session is set for. */ + enum lttng_buffer_type buffer_type; + /* If set to 1, the buffer_type can not be changed anymore. */ + int buffer_type_changed; + /* For per UID buffer, every buffer reg object is kept of this session */ + struct cds_list_head buffer_reg_uid_list; + /* Next channel ID available for a newly registered channel. */ + uint64_t next_channel_id; + /* Once this value reaches UINT32_MAX, no more id can be allocated. */ + uint64_t used_channel_id; + /* Tell or not if the session has to output the traces. */ + unsigned int output_traces; + unsigned int snapshot_mode; + unsigned int has_non_default_channel; + unsigned int live_timer_interval; /* usec */ }; +/* + * Validate that the id has reached the maximum allowed or not. + * + * Return 0 if NOT else 1. + */ +static inline int trace_ust_is_max_id(uint64_t id) +{ + return (id == UINT64_MAX) ? 1 : 0; +} + +/* + * Return next available channel id and increment the used counter. The + * trace_ust_is_max_id function MUST be called before in order to validate if + * the maximum number of IDs have been reached. If not, it is safe to call this + * function. + * + * Return a unique channel ID. If max is reached, the used_channel_id counter + * is returned. + */ +static inline uint64_t trace_ust_get_next_chan_id(struct ltt_ust_session *s) +{ + if (trace_ust_is_max_id(s->used_channel_id)) { + return s->used_channel_id; + } + + s->used_channel_id++; + return s->next_channel_id++; +} + #ifdef HAVE_LIBLTTNG_UST_CTL +int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key); +int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, + const void *_key); + /* * Lookup functions. NULL is returned if not found. */ -struct ltt_ust_event *trace_ust_find_event_by_name(struct lttng_ht *ht, - char *name); +struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, + char *name, struct lttng_filter_bytecode *filter, int loglevel); struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, char *name); /* * Create functions malloc() the data structure. */ -struct ltt_ust_session *trace_ust_create_session(char *path, - unsigned int session_id, struct lttng_domain *domain); -struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, - char *path); -struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev); +struct ltt_ust_session *trace_ust_create_session(uint64_t session_id); +struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr); +struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev, + struct lttng_filter_bytecode *filter); struct ltt_ust_metadata *trace_ust_create_metadata(char *path); struct ltt_ust_context *trace_ust_create_context( struct lttng_event_context *ctx); +void trace_ust_delete_channel(struct lttng_ht *ht, + struct ltt_ust_channel *channel); /* * Destroy functions free() the data structure and remove from linked list if @@ -159,13 +185,16 @@ void trace_ust_destroy_event(struct ltt_ust_event *event); #else /* HAVE_LIBLTTNG_UST_CTL */ -static inline -struct ltt_ust_event *trace_ust_find_event_by_name(struct lttng_ht *ht, - char *name) +static inline int trace_ust_ht_match_event(struct cds_lfht_node *node, + const void *_key) { - return NULL; + return 0; +} +static inline int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, + const void *_key) +{ + return 0; } - static inline struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, char *name) @@ -174,19 +203,18 @@ struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, } static inline -struct ltt_ust_session *trace_ust_create_session(char *path, pid_t pid, - struct lttng_domain *domain) +struct ltt_ust_session *trace_ust_create_session(unsigned int session_id) { return NULL; } static inline -struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, - char *path) +struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr) { return NULL; } static inline -struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev) +struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev, + struct lttng_filter_bytecode *filter) { return NULL; } @@ -221,6 +249,17 @@ struct ltt_ust_context *trace_ust_create_context( { return NULL; } +static inline struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, + char *name, struct lttng_filter_bytecode *filter, int loglevel) +{ + return NULL; +} +static inline +void trace_ust_delete_channel(struct lttng_ht *ht, + struct ltt_ust_channel *channel) +{ + return; +} #endif /* HAVE_LIBLTTNG_UST_CTL */