X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Ftrace-kernel.h;h=dd6f21edf2bb06452d8f2c8f399d73aec65cf4ee;hp=ae993c8d98df22a49c8d74d079c9f756e3ae2957;hb=a2814ea7573bf5edd5323d6f89c48ff14105db69;hpb=10a8a2237343699e3923d87e24dbf2d7fe225377 diff --git a/src/bin/lttng-sessiond/trace-kernel.h b/src/bin/lttng-sessiond/trace-kernel.h index ae993c8d9..dd6f21edf 100644 --- a/src/bin/lttng-sessiond/trace-kernel.h +++ b/src/bin/lttng-sessiond/trace-kernel.h @@ -1,29 +1,22 @@ /* - * Copyright (C) 2011 - David Goulet + * Copyright (C) 2011 David Goulet * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; only version 2 - * of the License. + * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _LTT_TRACE_KERNEL_H #define _LTT_TRACE_KERNEL_H -#include #include #include #include +#include +#include + +#include "consumer.h" +#include "tracker.h" /* Kernel event list */ struct ltt_kernel_event_list { @@ -40,49 +33,60 @@ struct ltt_kernel_channel_list { struct cds_list_head head; }; +struct ltt_kernel_context { + struct lttng_kernel_context ctx; + struct cds_list_head list; + /* Indicates whether or not the context is in a list. */ + bool in_list; +}; + /* Kernel event */ struct ltt_kernel_event { int fd; int enabled; - /* - * TODO: need internal representation to support more than a - * single context. - */ - struct lttng_kernel_context *ctx; + enum lttng_event_type type; struct lttng_kernel_event *event; struct cds_list_head list; + char *filter_expression; + struct lttng_filter_bytecode *filter; + struct lttng_userspace_probe_location *userspace_probe_location; }; /* Kernel channel */ struct ltt_kernel_channel { int fd; + uint64_t key; /* Key to reference this channel with the consumer. */ int enabled; - char *pathname; unsigned int stream_count; unsigned int event_count; - /* - * TODO: need internal representation to support more than a - * single context. - */ - struct lttng_kernel_context *ctx; + bool published_to_notification_thread; + struct cds_list_head ctx_list; struct lttng_channel *channel; struct ltt_kernel_event_list events_list; struct ltt_kernel_stream_list stream_list; struct cds_list_head list; + /* Session pointer which has a reference to this object. */ + struct ltt_kernel_session *session; + bool sent_to_consumer; }; /* Metadata */ struct ltt_kernel_metadata { int fd; - char *pathname; + uint64_t key; /* Key to reference this channel with the consumer. */ struct lttng_channel *conf; }; /* Channel stream */ struct ltt_kernel_stream { int fd; - char *pathname; int state; + int cpu; + bool sent_to_consumer; + /* Format is %s_%d respectively channel name and CPU number. */ + char name[DEFAULT_STREAM_NAME_LEN]; + uint64_t tracefile_size; + uint64_t tracefile_count; struct cds_list_head list; }; @@ -91,33 +95,63 @@ struct ltt_kernel_session { int fd; int metadata_stream_fd; int consumer_fds_sent; - int consumer_fd; unsigned int channel_count; unsigned int stream_count_global; - char *trace_path; struct ltt_kernel_metadata *metadata; struct ltt_kernel_channel_list channel_list; /* UID/GID of the user owning the session */ uid_t uid; gid_t gid; + struct consumer_output *consumer; + /* Tracing session id */ + uint64_t id; + /* Session is active or not meaning it has been started or stopped. */ + unsigned int active:1; + /* 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; + bool is_live_session; + /* Current trace chunk of the ltt_session. */ + struct lttng_trace_chunk *current_trace_chunk; + /* Tracker lists */ + struct process_attr_tracker *tracker_pid; + struct process_attr_tracker *tracker_vpid; + struct process_attr_tracker *tracker_uid; + struct process_attr_tracker *tracker_vuid; + struct process_attr_tracker *tracker_gid; + struct process_attr_tracker *tracker_vgid; }; /* * Lookup functions. NULL is returned if not found. */ struct ltt_kernel_event *trace_kernel_get_event_by_name( - char *name, struct ltt_kernel_channel *channel); + char *name, struct ltt_kernel_channel *channel, + enum lttng_event_type type); +struct ltt_kernel_event *trace_kernel_find_event( + char *name, struct ltt_kernel_channel *channel, + enum lttng_event_type type, + struct lttng_filter_bytecode *filter); struct ltt_kernel_channel *trace_kernel_get_channel_by_name( - char *name, struct ltt_kernel_session *session); + const char *name, struct ltt_kernel_session *session); /* * Create functions malloc() the data structure. */ -struct ltt_kernel_session *trace_kernel_create_session(char *path); -struct ltt_kernel_channel *trace_kernel_create_channel(struct lttng_channel *chan, char *path); -struct ltt_kernel_event *trace_kernel_create_event(struct lttng_event *ev); -struct ltt_kernel_metadata *trace_kernel_create_metadata(char *path); -struct ltt_kernel_stream *trace_kernel_create_stream(void); +struct ltt_kernel_session *trace_kernel_create_session(void); +struct ltt_kernel_channel *trace_kernel_create_channel( + struct lttng_channel *chan); +enum lttng_error_code trace_kernel_create_event(struct lttng_event *ev, + char *filter_expression, struct lttng_filter_bytecode *filter, + struct ltt_kernel_event **kernel_event); +struct ltt_kernel_metadata *trace_kernel_create_metadata(void); +struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, + unsigned int count); +struct ltt_kernel_context *trace_kernel_create_context( + struct lttng_kernel_context *ctx); +struct ltt_kernel_context *trace_kernel_copy_context( + struct ltt_kernel_context *ctx); /* * Destroy functions free() the data structure and remove from linked list if @@ -128,5 +162,7 @@ void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); void trace_kernel_destroy_event(struct ltt_kernel_event *event); void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); +void trace_kernel_destroy_context(struct ltt_kernel_context *ctx); +void trace_kernel_free_session(struct ltt_kernel_session *session); #endif /* _LTT_TRACE_KERNEL_H */