X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;ds=sidebyside;f=liblttng-ust%2Fust-events-internal.h;h=ac85b7116e2931fdfd6430a7403a814461fa43ce;hb=dc11f93f7d30cd383e35be41483cc024da59c7b8;hp=0fc0b795de3e08179e98ada090ad963e0e1d6313;hpb=621c07fc1b90c12ec997d539770da1937d11c450;p=lttng-ust.git diff --git a/liblttng-ust/ust-events-internal.h b/liblttng-ust/ust-events-internal.h index 0fc0b795..ac85b711 100644 --- a/liblttng-ust/ust-events-internal.h +++ b/liblttng-ust/ust-events-internal.h @@ -1,38 +1,76 @@ -#ifndef _LTTNG_UST_EVENTS_INTERNAL_H -#define _LTTNG_UST_EVENTS_INTERNAL_H - /* - * ust-events-internal.h - * - * Copyright 2019 (c) - Francis Deslauriers - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: + * SPDX-License-Identifier: MIT * - * 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. + * Copyright 2019 (c) Francis Deslauriers */ +#ifndef _LTTNG_UST_EVENTS_INTERNAL_H +#define _LTTNG_UST_EVENTS_INTERNAL_H + #include #include #include -#include +#include #include + +struct lttng_ust_abi_obj; + +union lttng_ust_abi_args { + struct { + void *chan_data; + int wakeup_fd; + } channel; + struct { + int shm_fd; + int wakeup_fd; + } stream; + struct { + struct lttng_ust_abi_field_iter entry; + } field_list; + struct { + char *ctxname; + } app_context; + struct { + int event_notifier_notif_fd; + } event_notifier_handle; + struct { + void *counter_data; + } counter; + struct { + int shm_fd; + } counter_shm; +}; + +struct lttng_ust_abi_objd_ops { + long (*cmd)(int objd, unsigned int cmd, unsigned long arg, + union lttng_ust_abi_args *args, void *owner); + int (*release)(int objd); +}; + +enum lttng_enabler_format_type { + LTTNG_ENABLER_FORMAT_STAR_GLOB, + LTTNG_ENABLER_FORMAT_EVENT, +}; + +/* + * Enabler field, within whatever object is enabling an event. Target of + * backward reference. + */ +struct lttng_enabler { + enum lttng_enabler_format_type format_type; + + /* 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 lttng_ust_abi_event event_param; + unsigned int enabled:1; +}; + struct lttng_event_enabler { struct lttng_enabler base; struct cds_list_head node; /* per-session list of enablers */ @@ -46,13 +84,17 @@ struct lttng_event_enabler { struct lttng_event_notifier_enabler { struct lttng_enabler base; - struct cds_list_head node; /* per-app list of event notifier enablers */ + uint64_t error_counter_index; + struct cds_list_head node; /* per-app list of event_notifier enablers */ + struct cds_list_head capture_bytecode_head; struct lttng_event_notifier_group *group; /* weak ref */ uint64_t user_token; /* User-provided token */ + uint64_t num_captures; }; enum lttng_ust_bytecode_node_type { LTTNG_UST_BYTECODE_NODE_TYPE_FILTER, + LTTNG_UST_BYTECODE_NODE_TYPE_CAPTURE, }; struct lttng_ust_bytecode_node { @@ -74,7 +116,154 @@ struct lttng_ust_excluder_node { * struct lttng_ust_event_exclusion had variable sized array, * must be last field. */ - struct lttng_ust_event_exclusion excluder; + struct lttng_ust_abi_event_exclusion excluder; +}; + +/* Data structures used by the tracer. */ + +struct tp_list_entry { + struct lttng_ust_abi_tracepoint_iter tp; + struct cds_list_head head; +}; + +struct lttng_ust_tracepoint_list { + struct tp_list_entry *iter; + struct cds_list_head head; +}; + +struct tp_field_list_entry { + struct lttng_ust_abi_field_iter field; + struct cds_list_head head; +}; + +struct lttng_ust_field_list { + struct tp_field_list_entry *iter; + struct cds_list_head head; +}; + +/* + * Objects in a linked-list of enablers, owned by an event or event_notifier. + * This is used because an event (or a event_notifier) can be enabled by more + * than one enabler and we want a quick way to iterate over all enablers of an + * object. + * + * For example, event rules "my_app:a*" and "my_app:ab*" will both match the + * event with the name "my_app:abc". + */ +struct lttng_enabler_ref { + struct cds_list_head node; /* enabler ref list */ + struct lttng_enabler *ref; /* backward ref */ +}; + +#define LTTNG_COUNTER_DIMENSION_MAX 8 +struct lttng_counter_dimension { + uint64_t size; + uint64_t underflow_index; + uint64_t overflow_index; + uint8_t has_underflow; + uint8_t has_overflow; +}; + +struct lttng_counter { + int objd; + struct lttng_event_notifier_group *event_notifier_group; /* owner */ + struct lttng_counter_transport *transport; + struct lib_counter *counter; + struct lttng_counter_ops *ops; +}; + +struct lttng_event_notifier_group { + int objd; + void *owner; + int notification_fd; + struct cds_list_head node; /* Event notifier group handle list */ + struct cds_list_head enablers_head; + struct cds_list_head event_notifiers_head; /* list of event_notifiers */ + struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */ + struct lttng_ctx *ctx; /* contexts for filters. */ + + struct lttng_counter *error_counter; + size_t error_counter_len; +}; + +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_counter_transport { + char *name; + struct cds_list_head node; + struct lttng_counter_ops ops; + const struct lib_counter_config *client_config; +}; + +struct lttng_ust_event_common_private { + struct lttng_ust_event_common *pub; /* Public event interface */ + + const struct lttng_ust_event_desc *desc; + /* Backward references: list of lttng_enabler_ref (ref to enablers) */ + struct cds_list_head enablers_ref_head; + int registered; /* has reg'd tracepoint probe */ + uint64_t user_token; +}; + +struct lttng_ust_event_recorder_private { + struct lttng_ust_event_common_private parent; + + struct lttng_ust_event_recorder *pub; /* Public event interface */ + struct cds_list_head node; /* Event recorder list */ + struct cds_hlist_node hlist; /* Hash table of event recorders */ +}; + +struct lttng_ust_event_notifier_private { + struct lttng_ust_event_common_private parent; + + struct lttng_ust_event_notifier *pub; /* Public event notifier interface */ + struct lttng_event_notifier_group *group; /* weak ref */ + size_t num_captures; /* Needed to allocate the msgpack array. */ + uint64_t error_counter_index; + struct cds_list_head node; /* Event notifier list */ + struct cds_hlist_node hlist; /* Hash table of event notifiers */ +}; + +struct lttng_ust_bytecode_runtime_private { + struct bytecode_runtime *pub; /* Public bytecode runtime interface */ + + struct lttng_ust_bytecode_node *bc; + int link_failed; + /* + * Pointer to a URCU-protected pointer owned by an `struct + * lttng_session`or `struct lttng_event_notifier_group`. + */ + struct lttng_ctx **pctx; +}; + +struct lttng_ust_session_private { + struct lttng_session *pub; /* Public session interface */ + + int been_active; /* Been active ? */ + int objd; /* Object associated */ + struct cds_list_head chan_head; /* Channel list head */ + struct cds_list_head events_head; /* list of events */ + struct cds_list_head node; /* Session list */ + + /* 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 */ + + /* New UST 2.4 */ + int statedump_pending:1; + + /* New UST 2.8 */ + struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */ + struct cds_list_head enums_head; + struct lttng_ctx *ctx; /* contexts for filters. */ }; static inline @@ -100,7 +289,7 @@ struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( LTTNG_HIDDEN struct lttng_event_enabler *lttng_event_enabler_create( enum lttng_enabler_format_type format_type, - struct lttng_ust_event *event_param, + struct lttng_ust_abi_event *event_param, struct lttng_channel *chan); /* @@ -130,7 +319,7 @@ int lttng_event_enabler_disable(struct lttng_event_enabler *enabler); LTTNG_HIDDEN int lttng_event_enabler_attach_filter_bytecode( struct lttng_event_enabler *enabler, - struct lttng_ust_bytecode_node *bytecode); + struct lttng_ust_bytecode_node **bytecode); /* * Attach an application context to an event enabler. @@ -139,7 +328,7 @@ int lttng_event_enabler_attach_filter_bytecode( */ LTTNG_HIDDEN int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler, - struct lttng_ust_context *ctx); + struct lttng_ust_abi_context *ctx); /* * Attach exclusion list to `struct lttng_event_enabler` and all @@ -147,16 +336,17 @@ int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler, */ LTTNG_HIDDEN int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler, - struct lttng_ust_excluder_node *excluder); + struct lttng_ust_excluder_node **excluder); /* - * Synchronize bytecodes for the enabler and the instance (event or trigger). + * Synchronize bytecodes for the enabler and the instance (event or + * event_notifier). * * This function goes over all bytecode programs of the enabler (event or - * trigger enabler) to ensure each is linked to the provided instance. + * event_notifier enabler) to ensure each is linked to the provided instance. */ LTTNG_HIDDEN -void lttng_enabler_link_bytecode(const struct lttng_event_desc *event_desc, +void lttng_enabler_link_bytecode(const struct lttng_ust_event_desc *event_desc, struct lttng_ctx **ctx, struct cds_list_head *instance_bytecode_runtime_head, struct cds_list_head *enabler_bytecode_runtime_head); @@ -187,7 +377,7 @@ LTTNG_HIDDEN struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( struct lttng_event_notifier_group *event_notifier_group, enum lttng_enabler_format_type format_type, - struct lttng_ust_event_notifier *event_notifier_param); + struct lttng_ust_abi_event_notifier *event_notifier_param); /* * Destroy a `struct lttng_event_notifier_enabler` object. @@ -219,7 +409,16 @@ int lttng_event_notifier_enabler_disable( LTTNG_HIDDEN int lttng_event_notifier_enabler_attach_filter_bytecode( struct lttng_event_notifier_enabler *event_notifier_enabler, - struct lttng_ust_bytecode_node *bytecode); + struct lttng_ust_bytecode_node **bytecode); + +/* + * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and + * all event_notifiers related to this enabler. + */ +LTTNG_HIDDEN +int lttng_event_notifier_enabler_attach_capture_bytecode( + struct lttng_event_notifier_enabler *event_notifier_enabler, + struct lttng_ust_bytecode_node **bytecode); /* * Attach exclusion list to `struct lttng_event_notifier_enabler` and all @@ -228,11 +427,10 @@ int lttng_event_notifier_enabler_attach_filter_bytecode( LTTNG_HIDDEN int lttng_event_notifier_enabler_attach_exclusion( struct lttng_event_notifier_enabler *event_notifier_enabler, - struct lttng_ust_excluder_node *excluder); + struct lttng_ust_excluder_node **excluder); LTTNG_HIDDEN -void lttng_free_event_notifier_filter_runtime( - struct lttng_event_notifier *event_notifier); +void lttng_free_event_filter_runtime(struct lttng_ust_event_common *event); /* * Connect the probe on all enablers matching this event description. @@ -241,4 +439,124 @@ void lttng_free_event_notifier_filter_runtime( LTTNG_HIDDEN int lttng_fix_pending_event_notifiers(void); +LTTNG_HIDDEN +struct lttng_counter *lttng_ust_counter_create( + const char *counter_transport_name, + size_t number_dimensions, const struct lttng_counter_dimension *dimensions); + +#ifdef HAVE_PERF_EVENT + +LTTNG_HIDDEN +int lttng_add_perf_counter_to_ctx(uint32_t type, + uint64_t config, + const char *name, + struct lttng_ctx **ctx); +LTTNG_HIDDEN +int lttng_perf_counter_init(void); +LTTNG_HIDDEN +void lttng_perf_counter_exit(void); + +#else /* #ifdef 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 HAVE_PERF_EVENT */ + +LTTNG_HIDDEN +int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list); +LTTNG_HIDDEN +void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list); + +LTTNG_HIDDEN +int lttng_probes_get_field_list(struct lttng_ust_field_list *list); +LTTNG_HIDDEN +void lttng_probes_prune_field_list(struct lttng_ust_field_list *list); + +LTTNG_HIDDEN +struct lttng_ust_abi_tracepoint_iter * + lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list); +LTTNG_HIDDEN +struct lttng_ust_abi_field_iter * + lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list); + +LTTNG_HIDDEN +struct lttng_session *lttng_session_create(void); +LTTNG_HIDDEN +int lttng_session_enable(struct lttng_session *session); +LTTNG_HIDDEN +int lttng_session_disable(struct lttng_session *session); +LTTNG_HIDDEN +int lttng_session_statedump(struct lttng_session *session); +LTTNG_HIDDEN +void lttng_session_destroy(struct lttng_session *session); + +LTTNG_HIDDEN +struct cds_list_head *lttng_get_sessions(void); + +LTTNG_HIDDEN +void lttng_handle_pending_statedump(void *owner); + +LTTNG_HIDDEN +struct lttng_channel *lttng_channel_create(struct lttng_session *session, + const char *transport_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); + +LTTNG_HIDDEN +int lttng_channel_enable(struct lttng_channel *channel); +LTTNG_HIDDEN +int lttng_channel_disable(struct lttng_channel *channel); + +LTTNG_HIDDEN +void lttng_transport_register(struct lttng_transport *transport); +LTTNG_HIDDEN +void lttng_transport_unregister(struct lttng_transport *transport); + +LTTNG_HIDDEN +void lttng_probe_provider_unregister_events(struct lttng_ust_probe_desc *desc); + +LTTNG_HIDDEN +int lttng_fix_pending_events(void); + +LTTNG_HIDDEN +struct cds_list_head *lttng_get_probe_list_head(void); + +LTTNG_HIDDEN +struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_session *session, + const struct lttng_enum_desc *enum_desc); + +LTTNG_HIDDEN +int lttng_abi_create_root_handle(void); + +LTTNG_HIDDEN +const struct lttng_ust_abi_objd_ops *lttng_ust_abi_objd_ops(int id); +LTTNG_HIDDEN +int lttng_ust_abi_objd_unref(int id, int is_owner); +LTTNG_HIDDEN +void lttng_ust_abi_exit(void); +LTTNG_HIDDEN +void lttng_ust_abi_events_exit(void); +LTTNG_HIDDEN +void lttng_ust_abi_objd_table_owner_cleanup(void *owner); + #endif /* _LTTNG_UST_EVENTS_INTERNAL_H */