X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-events.h;h=b44fba59de9d9428f955eb4946205b62cd320c28;hb=68bb7559b0041c38158c9ed0528d91d655e7eb6c;hp=16c5abb1f569fcd76ab6ffc12d2c54bdea884d43;hpb=23d128de387ed5663eb22c89bf7beb2d0416676b;p=lttng-ust.git diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h index 16c5abb1..b44fba59 100644 --- a/include/lttng/ust-events.h +++ b/include/lttng/ust-events.h @@ -1,37 +1,18 @@ -#ifndef _LTTNG_UST_EVENTS_H -#define _LTTNG_UST_EVENTS_H - /* - * lttng/ust-events.h + * SPDX-License-Identifier: MIT * - * Copyright 2010-2012 (c) - Mathieu Desnoyers + * Copyright (C) 2010-2012 Mathieu Desnoyers * * Holds LTTng per-session event registry. - * - * 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. */ +#ifndef _LTTNG_UST_EVENTS_H +#define _LTTNG_UST_EVENTS_H + #include #include #include #include -#include #include #include #include @@ -62,7 +43,6 @@ extern "C" { struct lttng_channel; struct lttng_session; struct lttng_ust_lib_ring_buffer_ctx; -struct lttng_ust_context_app; struct lttng_event_field; struct lttng_event_notifier; struct lttng_event_notifier_group; @@ -72,19 +52,6 @@ struct lttng_event_notifier_group; * tracer. Those structures have padding for future extension. */ -/* - * LTTng client type enumeration. Used by the consumer to map the - * callbacks from its own address space. - */ -enum lttng_client_types { - LTTNG_CLIENT_METADATA = 0, - LTTNG_CLIENT_DISCARD = 1, - LTTNG_CLIENT_OVERWRITE = 2, - LTTNG_CLIENT_DISCARD_RT = 3, - LTTNG_CLIENT_OVERWRITE_RT = 4, - LTTNG_NR_CLIENT_TYPES, -}; - /* Type description */ /* Update the astract_types name table in lttng-types.c along with this enum */ @@ -384,50 +351,6 @@ struct lttng_probe_desc { /* Data structures used by the tracer. */ -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 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; -}; - -struct ust_pending_probe; -struct lttng_event; - /* * Bytecode interpreter return value masks. */ @@ -464,20 +387,6 @@ struct lttng_bytecode_runtime { struct lttng_ctx **pctx; }; -/* - * 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 */ -}; - /* * lttng_event structure is referred to by the tracing fast path. It * must be kept small. @@ -486,22 +395,19 @@ struct lttng_enabler_ref { * UST. Fields need to be only added at the end, never reordered, never * removed. */ + +struct lttng_ust_event_private; + struct lttng_event { + struct lttng_ust_event_private *priv; /* Private event interface */ + unsigned int id; - struct lttng_channel *chan; int enabled; - const struct lttng_event_desc *desc; - struct lttng_ctx *ctx; - enum lttng_ust_instrumentation instrumentation; - struct cds_list_head node; /* Event list in session */ - + int has_enablers_without_bytecode; /* list of struct lttng_bytecode_runtime, sorted by seqnum */ struct cds_list_head filter_bytecode_runtime_head; - int has_enablers_without_bytecode; - /* Backward references: list of lttng_enabler_ref (ref to enablers) */ - struct cds_list_head enablers_ref_head; - struct cds_hlist_node hlist; /* session ht of events */ - int registered; /* has reg'd tracepoint probe */ + struct lttng_channel *chan; + struct lttng_ctx *ctx; }; struct lttng_event_notifier { @@ -598,15 +504,7 @@ struct lttng_channel { int tstate:1; /* Transient enable state */ }; -#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_dimension; struct lttng_counter_ops { struct lib_counter *(*counter_create)(size_t nr_dimensions, @@ -685,179 +583,19 @@ struct lttng_session { struct lttng_ctx *ctx; /* contexts for filters. */ }; -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_session *lttng_session_create(void); -int lttng_session_enable(struct lttng_session *session); -int lttng_session_disable(struct lttng_session *session); -int lttng_session_statedump(struct lttng_session *session); -void lttng_session_destroy(struct lttng_session *session); - -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); - -int lttng_channel_enable(struct lttng_channel *channel); -int lttng_channel_disable(struct lttng_channel *channel); - -int lttng_attach_context(struct lttng_ust_context *context_param, - union ust_args *uargs, - struct lttng_ctx **ctx, struct lttng_session *session); -void lttng_transport_register(struct lttng_transport *transport); -void lttng_transport_unregister(struct lttng_transport *transport); - -struct lttng_counter *lttng_ust_counter_create( - const char *counter_transport_name, - size_t number_dimensions, const struct lttng_counter_dimension *dimensions); - int lttng_probe_register(struct lttng_probe_desc *desc); void lttng_probe_unregister(struct lttng_probe_desc *desc); -void lttng_probe_provider_unregister_events(struct lttng_probe_desc *desc); -int lttng_fix_pending_events(void); -int lttng_probes_init(void); -void lttng_probes_exit(void); -int lttng_find_context(struct lttng_ctx *ctx, const char *name); -int lttng_get_context_index(struct lttng_ctx *ctx, const char *name); -struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p); -void lttng_context_update(struct lttng_ctx *ctx); -void lttng_remove_context_field(struct lttng_ctx **ctx_p, - struct lttng_ctx_field *field); -void lttng_destroy_context(struct lttng_ctx *ctx); -int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); -int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); -int lttng_add_pthread_id_to_ctx(struct lttng_ctx **ctx); -int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); -int lttng_add_ip_to_ctx(struct lttng_ctx **ctx); -int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx); -int lttng_add_dyntest_to_ctx(struct lttng_ctx **ctx); -int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx); -int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx); -int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx); -int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx); -int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx); -int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx); -int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx); -int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx); -int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx); -int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx); -int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx); -int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx); -int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx); -int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx); -void lttng_context_vtid_reset(void); -void lttng_context_vpid_reset(void); -void lttng_context_procname_reset(void); -void lttng_context_cgroup_ns_reset(void); -void lttng_context_ipc_ns_reset(void); -void lttng_context_mnt_ns_reset(void); -void lttng_context_net_ns_reset(void); -void lttng_context_pid_ns_reset(void); -void lttng_context_time_ns_reset(void); -void lttng_context_user_ns_reset(void); -void lttng_context_uts_ns_reset(void); -void lttng_context_vuid_reset(void); -void lttng_context_veuid_reset(void); -void lttng_context_vsuid_reset(void); -void lttng_context_vgid_reset(void); -void lttng_context_vegid_reset(void); -void lttng_context_vsgid_reset(void); - -#ifdef LTTNG_UST_HAVE_PERF_EVENT -int lttng_add_perf_counter_to_ctx(uint32_t type, - uint64_t config, - const char *name, - struct lttng_ctx **ctx); -int lttng_perf_counter_init(void); -void lttng_perf_counter_exit(void); -#else /* #ifdef LTTNG_UST_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 LTTNG_UST_HAVE_PERF_EVENT */ -extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_metadata; -extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_discard; -extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_overwrite; +/* + * Can be used by applications that change their procname to clear the ust cached value. + */ +void lttng_context_procname_reset(void); struct lttng_transport *lttng_transport_find(const char *name); -int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list); -void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list); -struct lttng_ust_tracepoint_iter * - lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list); -int lttng_probes_get_field_list(struct lttng_ust_field_list *list); -void lttng_probes_prune_field_list(struct lttng_ust_field_list *list); -struct lttng_ust_field_iter * - lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list); - -void lttng_free_event_filter_runtime(struct lttng_event *event); - -struct cds_list_head *lttng_get_probe_list_head(void); int lttng_session_active(void); -typedef int (*t_statedump_func_ptr)(struct lttng_session *session); -void lttng_handle_pending_statedump(void *owner); -struct cds_list_head *_lttng_get_sessions(void); - -struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_session *session, - const struct lttng_enum_desc *enum_desc); - void lttng_ust_dl_update(void *ip); -void lttng_ust_fixup_fd_tracker_tls(void); #ifdef __cplusplus }