+++ /dev/null
-/*
- * Copyright (C) 2011 EfficiOS Inc.
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#ifndef _LTT_TRACE_KERNEL_H
-#define _LTT_TRACE_KERNEL_H
-
-#include <urcu/list.h>
-
-#include <lttng/lttng.h>
-#include <common/lttng-kernel.h>
-#include <common/lttng-kernel-old.h>
-#include <common/defaults.h>
-
-#include "consumer.h"
-#include "tracker.h"
-
-/* Kernel event list */
-struct ltt_kernel_event_list {
- struct cds_list_head head;
-};
-
-/* Channel stream list */
-struct ltt_kernel_stream_list {
- struct cds_list_head head;
-};
-
-/* Channel list */
-struct ltt_kernel_channel_list {
- struct cds_list_head head;
-};
-
-struct ltt_kernel_context {
- struct lttng_kernel_abi_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;
- enum lttng_event_type type;
- struct lttng_kernel_abi_event *event;
- struct cds_list_head list;
- char *filter_expression;
- struct lttng_bytecode *filter;
- struct lttng_userspace_probe_location *userspace_probe_location;
-};
-
-/* Kernel event */
-struct ltt_kernel_event_notifier_rule {
- int fd;
- uint64_t error_counter_index;
- int enabled;
- enum lttng_event_type type;
- struct lttng_trigger *trigger;
- uint64_t token;
- const struct lttng_bytecode *filter;
- struct lttng_userspace_probe_location *userspace_probe_location;
- struct cds_lfht_node ht_node;
- /* call_rcu delayed reclaim. */
- struct rcu_head rcu_node;
-};
-
-/* Kernel channel */
-struct ltt_kernel_channel {
- int fd;
- uint64_t key; /* Key to reference this channel with the consumer. */
- int enabled;
- unsigned int stream_count;
- unsigned int event_count;
- 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;
- uint64_t key; /* Key to reference this channel with the consumer. */
- struct lttng_channel *conf;
-};
-
-/* Channel stream */
-struct ltt_kernel_stream {
- int fd;
- 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;
-};
-
-/* Kernel session */
-struct ltt_kernel_session {
- int fd;
- int metadata_stream_fd;
- int consumer_fds_sent;
- unsigned int channel_count;
- unsigned int stream_count_global;
- 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,
- 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_bytecode *filter);
-struct ltt_kernel_channel *trace_kernel_get_channel_by_name(
- const char *name, struct ltt_kernel_session *session);
-
-/*
- * Create functions malloc() the data structure.
- */
-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_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_abi_context *ctx);
-/* Trigger is only non-const to acquire a reference. */
-enum lttng_error_code trace_kernel_create_event_notifier_rule(
- struct lttng_trigger *trigger,
- uint64_t token,
- uint64_t error_counter_index,
- struct ltt_kernel_event_notifier_rule **event_notifier_rule);
-struct ltt_kernel_context *trace_kernel_copy_context(
- struct ltt_kernel_context *ctx);
-enum lttng_error_code trace_kernel_init_event_notifier_from_event_rule(
- const struct lttng_event_rule *rule,
- struct lttng_kernel_abi_event_notifier *kernel_event_notifier);
-
-/*
- * Destroy functions free() the data structure and remove from linked list if
- * it's applies.
- */
-void trace_kernel_destroy_session(struct ltt_kernel_session *session);
-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_destroy_event_notifier_rule(struct ltt_kernel_event_notifier_rule *rule);
-void trace_kernel_free_session(struct ltt_kernel_session *session);
-
-#endif /* _LTT_TRACE_KERNEL_H */
projects / lttng-tools.git / blobdiff