X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust%2Fust-events-internal.h;h=f574be60c1317d5b631d6d30b175a3290a219da3;hb=7ee76145ae6a7efc03968571b9e4a22d46e92929;hp=be5c549c8dccdc7c0f5b3f30eaa158413c64ef0d;hpb=6566528bd873067b5e68a0599d57044060908e29;p=lttng-ust.git diff --git a/liblttng-ust/ust-events-internal.h b/liblttng-ust/ust-events-internal.h index be5c549c..f574be60 100644 --- a/liblttng-ust/ust-events-internal.h +++ b/liblttng-ust/ust-events-internal.h @@ -1,38 +1,41 @@ -#ifndef _LTTNG_UST_EVENTS_INTERNAL_H -#define _LTTNG_UST_EVENTS_INTERNAL_H - /* - * ust-events-internal.h - * - * Copyright 2019 (c) - Francis Deslauriers + * SPDX-License-Identifier: MIT * - * 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: - * - * 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 +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_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 */ @@ -81,6 +84,141 @@ struct lttng_ust_excluder_node { struct lttng_ust_event_exclusion excluder; }; +/* Data structures used by the tracer. */ + +struct tp_list_entry { + struct lttng_ust_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_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_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 */ +}; + +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 list in session */ + struct cds_hlist_node hlist; /* session ht of events */ +}; + +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 struct lttng_enabler *lttng_event_enabler_as_enabler( struct lttng_event_enabler *event_enabler) @@ -134,7 +272,7 @@ 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. @@ -151,7 +289,7 @@ 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 @@ -224,7 +362,7 @@ 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 @@ -233,7 +371,7 @@ int lttng_event_notifier_enabler_attach_filter_bytecode( LTTNG_HIDDEN int lttng_event_notifier_enabler_attach_capture_bytecode( struct lttng_event_notifier_enabler *event_notifier_enabler, - struct lttng_ust_bytecode_node *bytecode); + struct lttng_ust_bytecode_node **bytecode); /* * Attach exclusion list to `struct lttng_event_notifier_enabler` and all @@ -242,7 +380,10 @@ int lttng_event_notifier_enabler_attach_capture_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_recorder_filter_runtime(struct lttng_ust_event_recorder *event_recorder); LTTNG_HIDDEN void lttng_free_event_notifier_filter_runtime( @@ -255,4 +396,110 @@ 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_tracepoint_iter * + lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list); +LTTNG_HIDDEN +struct lttng_ust_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_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); + #endif /* _LTTNG_UST_EVENTS_INTERNAL_H */