X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fust-app.h;h=449173cd36a94a2f965a6a31c2ee351732e8fc22;hp=edec8d49639eb25b61f02664847e9ef2cea29def;hb=da8734126339713603c25799dcd1dd72726730de;hpb=ecc48a904cc7c419fd1400afaa9ccb93be490cdd diff --git a/src/bin/lttng-sessiond/ust-app.h b/src/bin/lttng-sessiond/ust-app.h index edec8d496..449173cd3 100644 --- a/src/bin/lttng-sessiond/ust-app.h +++ b/src/bin/lttng-sessiond/ust-app.h @@ -1,28 +1,21 @@ /* - * Copyright (C) 2011 - David Goulet + * Copyright (C) 2011 David Goulet + * Copyright (C) 2016 Jérémie Galarneau * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2 only, - * as published by the Free Software Foundation. + * SPDX-License-Identifier: GPL-2.0-only * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef _LTT_UST_APP_H +#ifndef _LTT_UST_APP_H #define _LTT_UST_APP_H #include -#include +#include + #include "trace-ust.h" #include "ust-registry.h" +#include "session.h" #define UST_APP_EVENT_LIST_SIZE 32 @@ -46,8 +39,9 @@ struct ust_app_notify_sock_obj { struct ust_app_ht_key { const char *name; - const struct lttng_ust_filter_bytecode *filter; - enum lttng_ust_loglevel_type loglevel; + const struct lttng_filter_bytecode *filter; + enum lttng_ust_loglevel_type loglevel_type; + const struct lttng_event_exclusion *exclusion; }; /* @@ -77,19 +71,21 @@ struct ust_register_msg { * Global applications HT used by the session daemon. This table is indexed by * PID using the pid_n node and pid value of an ust_app. */ -struct lttng_ht *ust_app_ht; +extern struct lttng_ht *ust_app_ht; /* * Global applications HT used by the session daemon. This table is indexed by * socket using the sock_n node and sock value of an ust_app. + * + * The 'sock' in question here is the 'command' socket. */ -struct lttng_ht *ust_app_ht_by_sock; +extern struct lttng_ht *ust_app_ht_by_sock; /* * Global applications HT used by the session daemon. This table is indexed by * socket using the notify_sock_n node and notify_sock value of an ust_app. */ -struct lttng_ht *ust_app_ht_by_notify_sock; +extern struct lttng_ht *ust_app_ht_by_notify_sock; /* Stream list containing ust_app_stream. */ struct ust_app_stream_list { @@ -99,7 +95,7 @@ struct ust_app_stream_list { struct ust_app_ctx { int handle; - struct lttng_ust_context ctx; + struct lttng_ust_context_attr ctx; struct lttng_ust_object_data *obj; struct lttng_ht_node_ulong node; struct cds_list_head list; @@ -112,7 +108,8 @@ struct ust_app_event { struct lttng_ust_event attr; char name[LTTNG_UST_SYM_NAME_LEN]; struct lttng_ht_node_str node; - struct lttng_ust_filter_bytecode *filter; + struct lttng_filter_bytecode *filter; + struct lttng_event_exclusion *exclusion; }; struct ust_app_stream { @@ -130,7 +127,11 @@ struct ust_app_channel { int handle; /* Channel and streams were sent to the UST tracer. */ int is_sent; - /* Unique key used to identify the channel on the consumer side. */ + /* + * Unique key used to identify the channel on the consumer side. + * 0 is a reserved 'invalid' value used to indicate that the consumer + * does not know about this channel (i.e. an error occurred). + */ uint64_t key; /* Id of the tracing channel set on creation. */ uint64_t tracing_channel_id; @@ -153,6 +154,7 @@ struct ust_app_channel { struct lttng_ht *events; uint64_t tracefile_size; uint64_t tracefile_count; + uint64_t monitor_timer_interval; /* * Node indexed by channel name in the channels' hash table of a session. */ @@ -179,6 +181,8 @@ struct ust_app_session { int started; /* allows detection of start vs restart. */ int handle; /* used has unique identifier for app session */ + bool deleted; /* Session deleted flag. Check with lock held. */ + /* * Tracing session ID. Multiple ust app session can have the same tracing * session id making this value NOT unique to the object. @@ -187,13 +191,17 @@ struct ust_app_session { uint64_t id; /* Unique session identifier */ struct lttng_ht *channels; /* Registered channels */ struct lttng_ht_node_u64 node; + /* + * Node indexed by UST session object descriptor (handle). Stored in the + * ust_sessions_objd hash table in the ust_app object. + */ + struct lttng_ht_node_ulong ust_objd_node; + /* Starts with 'ust'; no leading slash. */ char path[PATH_MAX]; /* UID/GID of the application owning the session */ - uid_t uid; - gid_t gid; + struct lttng_credentials real_credentials; /* Effective UID and GID. Same as the tracing session. */ - uid_t euid; - gid_t egid; + struct lttng_credentials effective_credentials; struct cds_list_head teardown_node; /* * Once at least *one* session is created onto the application, the @@ -208,6 +216,12 @@ struct ust_app_session { /* If the channel's streams have to be outputed or not. */ unsigned int output_traces; unsigned int live_timer_interval; /* usec */ + + /* Metadata channel attributes. */ + struct ustctl_consumer_channel_attr metadata_attr; + + char root_shm_path[PATH_MAX]; + char shm_path[PATH_MAX]; }; /* @@ -216,6 +230,8 @@ struct ust_app_session { */ struct ust_app { int sock; + pthread_mutex_t sock_lock; /* Protects sock protocol. */ + int notify_sock; pid_t pid; pid_t ppid; @@ -259,55 +275,65 @@ struct ust_app { * Hash table containing ust_app_channel indexed by channel objd. */ struct lttng_ht *ust_objd; + /* + * Hash table containing ust_app_session indexed by objd. + */ + struct lttng_ht *ust_sessions_objd; + + /* + * If this application is of the agent domain and this is non negative then + * a lookup MUST be done to acquire a read side reference to the + * corresponding agent app object. If the lookup fails, this should be set + * to a negative value indicating that the agent application is gone. + */ + int agent_app_sock; + /* + * Time at which the app is registred. + * Used for path creation + */ + time_t registration_time; + /* + * Event notifier + */ + struct { + /* + * Handle to the lttng_ust object representing the event + * notifier group. + */ + struct lttng_ust_object_data *object; + struct lttng_pipe *event_pipe; + } event_notifier_group; }; #ifdef HAVE_LIBLTTNG_UST_CTL int ust_app_register(struct ust_register_msg *msg, int sock); -static inline -int ust_app_register_done(int sock) -{ - return ustctl_register_done(sock); -} +int ust_app_register_done(struct ust_app *app); int ust_app_version(struct ust_app *app); void ust_app_unregister(int sock); -unsigned long ust_app_list_count(void); int ust_app_start_trace_all(struct ltt_ust_session *usess); int ust_app_stop_trace_all(struct ltt_ust_session *usess); int ust_app_destroy_trace_all(struct ltt_ust_session *usess); int ust_app_list_events(struct lttng_event **events); int ust_app_list_event_fields(struct lttng_event_field **fields); -int ust_app_create_channel_glb(struct ltt_ust_session *usess, - struct ltt_ust_channel *uchan); int ust_app_create_event_glb(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent); -int ust_app_disable_event_pid(struct ltt_ust_session *usess, - struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent, - pid_t pid); -int ust_app_enable_event_pid(struct ltt_ust_session *usess, - struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent, - pid_t pid); int ust_app_disable_channel_glb(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan); int ust_app_enable_channel_glb(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan); int ust_app_enable_event_glb(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent); -int ust_app_disable_all_event_glb(struct ltt_ust_session *usess, - struct ltt_ust_channel *uchan); -int ust_app_enable_all_event_glb(struct ltt_ust_session *usess, - struct ltt_ust_channel *uchan); int ust_app_disable_event_glb(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent); int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx); -void ust_app_global_update(struct ltt_ust_session *usess, int sock); +void ust_app_global_update(struct ltt_ust_session *usess, struct ust_app *app); +void ust_app_global_update_all(struct ltt_ust_session *usess); void ust_app_clean_list(void); -void ust_app_ht_alloc(void); -struct lttng_ht *ust_app_get_ht(void); +int ust_app_ht_alloc(void); struct ust_app *ust_app_find_by_pid(pid_t pid); -int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate); struct ust_app_stream *ust_app_alloc_stream(void); int ust_app_recv_registration(int sock, struct ust_register_msg *msg); int ust_app_recv_notify(int sock); @@ -317,9 +343,31 @@ void ust_app_notify_sock_unregister(int sock); ssize_t ust_app_push_metadata(struct ust_registry_session *registry, struct consumer_socket *socket, int send_zero_data); void ust_app_destroy(struct ust_app *app); -int ust_app_snapshot_record(struct ltt_ust_session *usess, - struct snapshot_output *output, int wait, unsigned int nb_streams); -unsigned int ust_app_get_nb_stream(struct ltt_ust_session *usess); +enum lttng_error_code ust_app_snapshot_record( + const struct ltt_ust_session *usess, + const struct consumer_output *output, int wait, + uint64_t nb_packets_per_stream); +uint64_t ust_app_get_size_one_more_packet_per_stream( + const struct ltt_ust_session *usess, uint64_t cur_nr_packets); +struct ust_app *ust_app_find_by_sock(int sock); +int ust_app_uid_get_channel_runtime_stats(uint64_t ust_session_id, + struct cds_list_head *buffer_reg_uid_list, + struct consumer_output *consumer, uint64_t uchan_id, + int overwrite, uint64_t *discarded, uint64_t *lost); +int ust_app_pid_get_channel_runtime_stats(struct ltt_ust_session *usess, + struct ltt_ust_channel *uchan, + struct consumer_output *consumer, + int overwrite, uint64_t *discarded, uint64_t *lost); +int ust_app_regenerate_statedump_all(struct ltt_ust_session *usess); +enum lttng_error_code ust_app_rotate_session(struct ltt_session *session); +enum lttng_error_code ust_app_create_channel_subdirectories( + const struct ltt_ust_session *session); +int ust_app_release_object(struct ust_app *app, + struct lttng_ust_object_data *data); +enum lttng_error_code ust_app_clear_session(struct ltt_session *session); +enum lttng_error_code ust_app_open_packets(struct ltt_session *session); + +int ust_app_setup_event_notifier_group(struct ust_app *app); static inline int ust_app_supported(void) @@ -365,7 +413,7 @@ int ust_app_register(struct ust_register_msg *msg, int sock) return -ENOSYS; } static inline -int ust_app_register_done(int sock) +int ust_app_register_done(struct ust_app *app) { return -ENOSYS; } @@ -379,11 +427,6 @@ void ust_app_unregister(int sock) { } static inline -unsigned int ust_app_list_count(void) -{ - return 0; -} -static inline void ust_app_lock_list(void) { } @@ -406,42 +449,29 @@ struct ust_app *ust_app_get_by_pid(pid_t pid) return NULL; } static inline -struct lttng_ht *ust_app_get_ht(void) +int ust_app_ht_alloc(void) { - return NULL; + return 0; } static inline -void ust_app_ht_alloc(void) +void ust_app_global_update(struct ltt_ust_session *usess, struct ust_app *app) {} static inline -void ust_app_global_update(struct ltt_ust_session *usess, int sock) +void ust_app_global_update_tokens(struct ust_app *app) {} static inline -int ust_app_disable_channel_glb(struct ltt_ust_session *usess, - struct ltt_ust_channel *uchan) -{ - return 0; -} -static inline -int ust_app_enable_channel_glb(struct ltt_ust_session *usess, - struct ltt_ust_channel *uchan) -{ - return 0; -} -static inline -int ust_app_create_channel_glb(struct ltt_ust_session *usess, - struct ltt_ust_channel *uchan) +int ust_app_setup_event_notifier_group(struct ust_app *app) { return 0; } static inline -int ust_app_disable_all_event_glb(struct ltt_ust_session *usess, +int ust_app_disable_channel_glb(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan) { return 0; } static inline -int ust_app_enable_all_event_glb(struct ltt_ust_session *usess, +int ust_app_enable_channel_glb(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan) { return 0; @@ -478,18 +508,6 @@ int ust_app_enable_event_pid(struct ltt_ust_session *usess, return 0; } static inline -int ust_app_disable_event_pid(struct ltt_ust_session *usess, - struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent, - pid_t pid) -{ - return 0; -} -static inline -int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate) -{ - return 0; -} -static inline int ust_app_recv_registration(int sock, struct ust_register_msg *msg) { return 0; @@ -524,8 +542,8 @@ void ust_app_destroy(struct ust_app *app) return; } static inline -int ust_app_snapshot_record(struct ltt_ust_session *usess, - struct snapshot_output *output, int wait, unsigned int nb_stream) +enum lttng_error_code ust_app_snapshot_record(struct ltt_ust_session *usess, + const struct consumer_output *output, int wait, uint64_t max_stream_size) { return 0; } @@ -540,6 +558,75 @@ int ust_app_supported(void) { return 0; } +static inline +struct ust_app *ust_app_find_by_sock(int sock) +{ + return NULL; +} +static inline +struct ust_app *ust_app_find_by_pid(pid_t pid) +{ + return NULL; +} +static inline +uint64_t ust_app_get_size_one_more_packet_per_stream( + const struct ltt_ust_session *usess, uint64_t cur_nr_packets) { + return 0; +} +static inline +int ust_app_uid_get_channel_runtime_stats(uint64_t ust_session_id, + struct cds_list_head *buffer_reg_uid_list, + struct consumer_output *consumer, int overwrite, + uint64_t uchan_id, uint64_t *discarded, uint64_t *lost) +{ + return 0; +} + +static inline +int ust_app_pid_get_channel_runtime_stats(struct ltt_ust_session *usess, + struct ltt_ust_channel *uchan, + struct consumer_output *consumer, + int overwrite, uint64_t *discarded, uint64_t *lost) +{ + return 0; +} + +static inline +int ust_app_regenerate_statedump_all(struct ltt_ust_session *usess) +{ + return 0; +} + +static inline +enum lttng_error_code ust_app_rotate_session(struct ltt_session *session) +{ + return 0; +} + +static inline +enum lttng_error_code ust_app_create_channel_subdirectories( + const struct ltt_ust_session *session) +{ + return 0; +} + +static inline +int ust_app_release_object(struct ust_app *app, struct lttng_ust_object_data *data) +{ + return 0; +} + +static inline +enum lttng_error_code ust_app_clear_session(struct ltt_session *session) +{ + return 0; +} + +static inline +enum lttng_error_code ust_app_open_packets(struct ltt_session *session) +{ + return 0; +} #endif /* HAVE_LIBLTTNG_UST_CTL */