X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Ftrace-ust.h;fp=src%2Fbin%2Flttng-sessiond%2Ftrace-ust.h;h=0000000000000000000000000000000000000000;hp=d4df48d189f9d99b0eadb0edba49ecb32bc3fb9e;hb=c9e313bc594f40a86eed237dce222c0fc99c957f;hpb=4878de5c7deb512bbdac4fdfc498907efa06fb7c diff --git a/src/bin/lttng-sessiond/trace-ust.h b/src/bin/lttng-sessiond/trace-ust.h deleted file mode 100644 index d4df48d18..000000000 --- a/src/bin/lttng-sessiond/trace-ust.h +++ /dev/null @@ -1,404 +0,0 @@ -/* - * Copyright (C) 2011 EfficiOS Inc. - * Copyright (C) 2016 Jérémie Galarneau - * - * SPDX-License-Identifier: GPL-2.0-only - * - */ - -#ifndef _LTT_TRACE_UST_H -#define _LTT_TRACE_UST_H - -#include -#include - -#include -#include -#include -#include - -#include "consumer.h" -#include "lttng-ust-ctl.h" - -struct agent; - -struct ltt_ust_ht_key { - const char *name; - const struct lttng_bytecode *filter; - enum lttng_ust_abi_loglevel_type loglevel_type; - int loglevel_value; - const struct lttng_event_exclusion *exclusion; -}; - -/* Context hash table nodes */ -struct ltt_ust_context { - struct lttng_ust_context_attr ctx; - struct lttng_ht_node_ulong node; - struct cds_list_head list; -}; - -/* UST event */ -struct ltt_ust_event { - unsigned int enabled; - struct lttng_ust_abi_event attr; - struct lttng_ht_node_str node; - char *filter_expression; - struct lttng_bytecode *filter; - struct lttng_event_exclusion *exclusion; - /* - * An internal event is an event which was created by the session daemon - * through which, for example, events emitted in Agent domains are - * "funelled". This is used to hide internal events from external - * clients as they should never be modified by the external world. - */ - bool internal; -}; - -/* UST channel */ -struct ltt_ust_channel { - uint64_t id; /* unique id per session. */ - unsigned int enabled; - /* - * A UST channel can be part of a userspace sub-domain such as JUL, - * Log4j, Python. - */ - enum lttng_domain_type domain; - char name[LTTNG_UST_ABI_SYM_NAME_LEN]; - struct lttng_ust_abi_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; - uint64_t per_pid_closed_app_discarded; - uint64_t per_pid_closed_app_lost; - uint64_t monitor_timer_interval; -}; - -/* UST domain global (LTTNG_DOMAIN_UST) */ -struct ltt_ust_domain_global { - struct lttng_ht *channels; - struct cds_list_head registry_buffer_uid_list; -}; - -struct ust_id_tracker_node { - struct lttng_ht_node_ulong node; -}; - -struct ust_id_tracker { - struct lttng_ht *ht; -}; - -/* UST session */ -struct ltt_ust_session { - uint64_t id; /* Unique identifier of session */ - struct ltt_ust_domain_global domain_global; - /* Hash table of agent indexed by agent domain. */ - struct lttng_ht *agents; - /* UID/GID of the user owning the session */ - uid_t uid; - gid_t gid; - /* Is the session active meaning has is been started or stopped. */ - unsigned int active:1; - struct consumer_output *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 */ - - /* Metadata channel attributes. */ - struct lttng_ust_abi_channel_attr metadata_attr; - - /* - * Path where to keep the shared memory files. - */ - char root_shm_path[PATH_MAX]; - char shm_path[PATH_MAX]; - - /* Current trace chunk of the ltt_session. */ - struct lttng_trace_chunk *current_trace_chunk; - - /* Trackers used for actual lookup on app registration. */ - struct ust_id_tracker vpid_tracker; - struct ust_id_tracker vuid_tracker; - struct ust_id_tracker vgid_tracker; - - /* Tracker list of keys requested by users. */ - struct process_attr_tracker *tracker_vpid; - struct process_attr_tracker *tracker_vuid; - struct process_attr_tracker *tracker_vgid; -}; - -/* - * 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(struct lttng_ht *ht, - char *name, struct lttng_bytecode *filter, - enum lttng_ust_abi_loglevel_type loglevel_type, int loglevel_value, - struct lttng_event_exclusion *exclusion); -struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, - const char *name); -struct agent *trace_ust_find_agent(struct ltt_ust_session *session, - enum lttng_domain_type domain_type); - -/* - * Create functions malloc() the data structure. - */ -struct ltt_ust_session *trace_ust_create_session(uint64_t session_id); -struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr, - enum lttng_domain_type domain); - -enum lttng_error_code trace_ust_create_event(struct lttng_event *ev, - char *filter_expression, - struct lttng_bytecode *filter, - struct lttng_event_exclusion *exclusion, - bool internal_event, struct ltt_ust_event **ust_event); -struct ltt_ust_context *trace_ust_create_context( - const struct lttng_event_context *ctx); -int trace_ust_match_context(const struct ltt_ust_context *uctx, - const 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 - * it's applies. - */ -void trace_ust_destroy_session(struct ltt_ust_session *session); -void trace_ust_destroy_channel(struct ltt_ust_channel *channel); -void trace_ust_destroy_event(struct ltt_ust_event *event); -void trace_ust_destroy_context(struct ltt_ust_context *ctx); -void trace_ust_free_session(struct ltt_ust_session *session); - -int trace_ust_id_tracker_lookup(enum lttng_process_attr process_attr, - struct ltt_ust_session *session, - int id); -enum lttng_error_code trace_ust_process_attr_tracker_set_tracking_policy( - struct ltt_ust_session *session, - enum lttng_process_attr process_attr, - enum lttng_tracking_policy policy); -enum lttng_error_code trace_ust_process_attr_tracker_inclusion_set_add_value( - struct ltt_ust_session *session, - enum lttng_process_attr process_attr, - const struct process_attr_value *value); -enum lttng_error_code trace_ust_process_attr_tracker_inclusion_set_remove_value( - struct ltt_ust_session *session, - enum lttng_process_attr process_attr, - const struct process_attr_value *value); -const struct process_attr_tracker *trace_ust_get_process_attr_tracker( - struct ltt_ust_session *session, - enum lttng_process_attr process_attr); - -#else /* HAVE_LIBLTTNG_UST_CTL */ - -static inline int trace_ust_ht_match_event( - struct cds_lfht_node *node __attribute__((unused)), - const void *_key __attribute__((unused))) -{ - return 0; -} - -static inline int trace_ust_ht_match_event_by_name( - struct cds_lfht_node *node __attribute__((unused)), - const void *_key __attribute__((unused))) -{ - return 0; -} - -static inline -struct ltt_ust_channel *trace_ust_find_channel_by_name( - struct lttng_ht *ht __attribute__((unused)), - const char *name __attribute__((unused))) -{ - return NULL; -} - -static inline -struct ltt_ust_session *trace_ust_create_session( - unsigned int session_id __attribute__((unused))) -{ - return NULL; -} - -static inline -struct ltt_ust_channel *trace_ust_create_channel( - struct lttng_channel *attr __attribute__((unused)), - enum lttng_domain_type domain __attribute__((unused))) -{ - return NULL; -} - -static inline -enum lttng_error_code trace_ust_create_event( - struct lttng_event *ev __attribute__((unused)), - const char *filter_expression __attribute__((unused)), - struct lttng_bytecode *filter __attribute__((unused)), - struct lttng_event_exclusion *exclusion __attribute__((unused)), - bool internal_event __attribute__((unused)), - struct ltt_ust_event **ust_event __attribute__((unused))) -{ - return LTTNG_ERR_NO_UST; -} - -static inline -void trace_ust_destroy_session( - struct ltt_ust_session *session __attribute__((unused))) -{ -} - -static inline -void trace_ust_destroy_channel( - struct ltt_ust_channel *channel __attribute__((unused))) -{ -} - -static inline -void trace_ust_destroy_event( - struct ltt_ust_event *event __attribute__((unused))) -{ -} - -static inline -void trace_ust_free_session( - struct ltt_ust_session *session __attribute__((unused))) -{ -} - -static inline -struct ltt_ust_context *trace_ust_create_context( - const struct lttng_event_context *ctx __attribute__((unused))) -{ - return NULL; -} - -static inline -int trace_ust_match_context( - const struct ltt_ust_context *uctx __attribute__((unused)), - const struct lttng_event_context *ctx __attribute__((unused))) -{ - return 0; -} - -static inline -struct ltt_ust_event *trace_ust_find_event( - struct lttng_ht *ht __attribute__((unused)), - char *name __attribute__((unused)), - struct lttng_bytecode *filter __attribute__((unused)), - enum lttng_ust_abi_loglevel_type loglevel_type __attribute__((unused)), - int loglevel_value __attribute__((unused)), - struct lttng_event_exclusion *exclusion __attribute__((unused))) -{ - return NULL; -} - -static inline -void trace_ust_delete_channel( - struct lttng_ht *ht __attribute__((unused)), - struct ltt_ust_channel *channel __attribute__((unused))) -{ - return; -} - -static inline -struct agent *trace_ust_find_agent( - struct ltt_ust_session *session __attribute__((unused)), - enum lttng_domain_type domain_type __attribute__((unused))) -{ - return NULL; -} - -static inline int trace_ust_id_tracker_lookup( - enum lttng_process_attr process_attr __attribute__((unused)), - struct ltt_ust_session *session __attribute__((unused)), - int id __attribute__((unused))) -{ - return 0; -} - -static inline enum lttng_error_code -trace_ust_process_attr_tracker_set_tracking_policy( - struct ltt_ust_session *session __attribute__((unused)), - enum lttng_process_attr process_attr __attribute__((unused)), - enum lttng_tracking_policy policy __attribute__((unused))) -{ - return LTTNG_OK; -} - -static inline enum lttng_error_code -trace_ust_process_attr_tracker_inclusion_set_add_value( - struct ltt_ust_session *session __attribute__((unused)), - enum lttng_process_attr process_attr __attribute__((unused)), - const struct process_attr_value *value __attribute__((unused))) -{ - return LTTNG_OK; -} - -static inline enum lttng_error_code -trace_ust_process_attr_tracker_inclusion_set_remove_value( - struct ltt_ust_session *session __attribute__((unused)), - enum lttng_process_attr process_attr __attribute__((unused)), - const struct process_attr_value *value __attribute__((unused))) -{ - return LTTNG_OK; -} - -static inline const struct process_attr_tracker * -trace_ust_get_process_attr_tracker( - struct ltt_ust_session *session __attribute__((unused)), - enum lttng_process_attr process_attr __attribute__((unused))) -{ - return NULL; -} - -#endif /* HAVE_LIBLTTNG_UST_CTL */ - -#endif /* _LTT_TRACE_UST_H */