X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fconsumer.h;h=aef7f560e4dcae78e62343eae1492de6ea85434b;hb=3d229795de7f38cce87d6d5ea76ef413dbb71f1d;hp=5a11950084bce1f36625ff0ce7809c31ca5eae71;hpb=75d83e506938a3e673ad19bb11838ee88e977e72;p=lttng-tools.git diff --git a/src/common/consumer.h b/src/common/consumer.h index 5a1195008..aef7f560e 100644 --- a/src/common/consumer.h +++ b/src/common/consumer.h @@ -32,6 +32,7 @@ #include #include #include +#include /* Commands for consumer */ enum lttng_consumer_command { @@ -115,7 +116,7 @@ struct lttng_consumer_channel { char pathname[PATH_MAX]; /* Channel name. */ char name[LTTNG_SYMBOL_NAME_LEN]; - /* UID and GID of the channel. */ + /* UID and GID of the session owning this channel. */ uid_t uid; gid_t gid; /* Relayd id of the channel. -1ULL if it does not apply. */ @@ -131,6 +132,7 @@ struct lttng_consumer_channel { enum consumer_channel_type type; /* For UST */ + uid_t ust_app_uid; /* Application UID. */ struct ustctl_consumer_channel *uchan; unsigned char uuid[UUID_STR_LEN]; /* @@ -154,11 +156,16 @@ struct lttng_consumer_channel { /* Metadata cache is metadata channel */ struct consumer_metadata_cache *metadata_cache; - /* For metadata periodical flush */ + /* For UST metadata periodical flush */ int switch_timer_enabled; timer_t switch_timer; int switch_timer_error; + /* For the live mode */ + int live_timer_enabled; + timer_t live_timer; + int live_timer_error; + /* On-disk circular buffer */ uint64_t tracefile_size; uint64_t tracefile_count; @@ -172,12 +179,32 @@ struct lttng_consumer_channel { /* * Channel lock. * + * This lock protects against concurrent update of channel. + * * This is nested INSIDE the consumer data lock. + * This is nested OUTSIDE the channel timer lock. * This is nested OUTSIDE the metadata cache lock. * This is nested OUTSIDE stream lock. * This is nested OUTSIDE consumer_relayd_sock_pair lock. */ pthread_mutex_t lock; + + /* + * Channel teardown lock. + * + * This lock protect against teardown of channel. It is _never_ + * taken by the timer handler. + * + * This is nested INSIDE the consumer data lock. + * This is nested INSIDE the channel lock. + * This is nested OUTSIDE the metadata cache lock. + * This is nested OUTSIDE stream lock. + * This is nested OUTSIDE consumer_relayd_sock_pair lock. + */ + pthread_mutex_t timer_lock; + + /* Timer value in usec for live streaming. */ + unsigned int live_timer_interval; }; /* @@ -203,6 +230,8 @@ struct lttng_consumer_stream { int out_fd; /* output file to write the data */ /* Write position in the output file descriptor */ off_t out_fd_offset; + /* Amount of bytes written to the output */ + uint64_t output_written; enum lttng_consumer_stream_state state; int shm_fd_is_copy; int data_read; @@ -258,6 +287,7 @@ struct lttng_consumer_stream { * This is nested INSIDE the consumer_data lock. * This is nested INSIDE the metadata cache lock. * This is nested INSIDE the channel lock. + * This is nested INSIDE the channel timer lock. * This is nested OUTSIDE consumer_relayd_sock_pair lock. */ pthread_mutex_t lock; @@ -300,6 +330,16 @@ struct lttng_consumer_stream { * to the channel. */ uint64_t ust_metadata_pushed; + /* + * FD of the index file for this stream. + */ + int index_fd; + + /* + * Rendez-vous point between data and metadata stream in live mode. + */ + pthread_cond_t metadata_rdv; + pthread_mutex_t metadata_rdv_lock; }; /* @@ -398,7 +438,11 @@ struct lttng_consumer_local_data { int consumer_error_socket; /* socket to ask metadata to sessiond. */ int consumer_metadata_socket; - /* Protect consumer_metadata_socket. */ + /* + * Protect consumer_metadata_socket. + * + * This is nested OUTSIDE the metadata cache lock. + */ pthread_mutex_t metadata_socket_lock; /* socket to exchange commands with sessiond */ char *consumer_command_sock_path; @@ -534,7 +578,8 @@ struct lttng_consumer_channel *consumer_allocate_channel(uint64_t key, uint64_t tracefile_size, uint64_t tracefile_count, uint64_t session_id_per_pid, - unsigned int monitor); + unsigned int monitor, + unsigned int live_timer_interval); void consumer_del_stream(struct lttng_consumer_stream *stream, struct lttng_ht *ht); void consumer_del_metadata_stream(struct lttng_consumer_stream *stream, @@ -565,11 +610,13 @@ void lttng_consumer_destroy(struct lttng_consumer_local_data *ctx); ssize_t lttng_consumer_on_read_subbuffer_mmap( struct lttng_consumer_local_data *ctx, struct lttng_consumer_stream *stream, unsigned long len, - unsigned long padding); + unsigned long padding, + struct lttng_packet_index *index); ssize_t lttng_consumer_on_read_subbuffer_splice( struct lttng_consumer_local_data *ctx, struct lttng_consumer_stream *stream, unsigned long len, - unsigned long padding); + unsigned long padding, + struct lttng_packet_index *index); int lttng_consumer_take_snapshot(struct lttng_consumer_stream *stream); int lttng_consumer_get_produced_snapshot(struct lttng_consumer_stream *stream, unsigned long *pos); @@ -586,7 +633,7 @@ int lttng_consumer_on_recv_stream(struct lttng_consumer_stream *stream); int consumer_add_relayd_socket(uint64_t net_seq_idx, int sock_type, struct lttng_consumer_local_data *ctx, int sock, struct pollfd *consumer_sockpoll, struct lttcomm_relayd_sock *relayd_sock, - uint64_t sessiond_id); + uint64_t sessiond_id, uint64_t relayd_session_id); void consumer_flag_relayd_for_destroy( struct consumer_relayd_sock_pair *relayd); int consumer_data_pending(uint64_t id); @@ -598,5 +645,10 @@ void notify_thread_del_channel(struct lttng_consumer_local_data *ctx, void consumer_destroy_relayd(struct consumer_relayd_sock_pair *relayd); unsigned long consumer_get_consumed_maxsize(unsigned long consumed_pos, unsigned long produced_pos, uint64_t max_stream_size); +int consumer_add_data_stream(struct lttng_consumer_stream *stream); +void consumer_del_stream_for_data(struct lttng_consumer_stream *stream); +int consumer_add_metadata_stream(struct lttng_consumer_stream *stream); +void consumer_del_stream_for_metadata(struct lttng_consumer_stream *stream); +int consumer_create_index_file(struct lttng_consumer_stream *stream); #endif /* LIB_CONSUMER_H */