+++ /dev/null
-/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- *
- * 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.
- *
- * 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_TRACE_UST_H
-#define _LTT_TRACE_UST_H
-
-#include <config.h>
-#include <limits.h>
-#include <urcu/list.h>
-
-#include <lttng/lttng.h>
-#include <common/hashtable/hashtable.h>
-#include <common/defaults.h>
-
-#include "consumer.h"
-#include "agent.h"
-#include "ust-ctl.h"
-
-struct ltt_ust_ht_key {
- const char *name;
- const struct lttng_filter_bytecode *filter;
- enum lttng_ust_loglevel_type loglevel;
- const struct lttng_event_exclusion *exclusion;
-};
-
-/* Context hash table nodes */
-struct ltt_ust_context {
- struct lttng_ust_context ctx;
- struct lttng_ht_node_ulong node;
- struct cds_list_head list;
-};
-
-/* UST event */
-struct ltt_ust_event {
- unsigned int enabled;
- struct lttng_ust_event attr;
- struct lttng_ht_node_str node;
- char *filter_expression;
- struct lttng_ust_filter_bytecode *filter;
- struct lttng_event_exclusion *exclusion;
-};
-
-/* UST channel */
-struct ltt_ust_channel {
- uint64_t id; /* unique id per session. */
- unsigned int enabled;
- char name[LTTNG_UST_SYM_NAME_LEN];
- struct lttng_ust_channel_attr attr;
- struct lttng_ht *ctx;
- struct cds_list_head ctx_list;
- struct lttng_ht *events;
- struct lttng_ht_node_str node;
- uint64_t tracefile_size;
- uint64_t tracefile_count;
-};
-
-/* UST domain global (LTTNG_DOMAIN_UST) */
-struct ltt_ust_domain_global {
- struct lttng_ht *channels;
- struct cds_list_head registry_buffer_uid_list;
-};
-
-struct ust_pid_tracker_node {
- struct lttng_ht_node_ulong node;
-};
-
-struct ust_pid_tracker {
- struct lttng_ht *ht;
-};
-
-/* UST session */
-struct ltt_ust_session {
- uint64_t id; /* Unique identifier of session */
- struct ltt_ust_domain_global domain_global;
- /* Hash table of agent indexed by agent domain. */
- struct lttng_ht *agents;
- /* UID/GID of the user owning the session */
- uid_t uid;
- gid_t gid;
- /* Is the session active meaning has is been started or stopped. */
- unsigned int active:1;
- /*
- * Two consumer_output object are needed where one is for the current
- * output object and the second one is the temporary object used to store
- * URI being set by the lttng_set_consumer_uri call. Once
- * lttng_enable_consumer is called, the two pointers are swapped.
- */
- struct consumer_output *consumer;
- struct consumer_output *tmp_consumer;
- /* Sequence number for filters so the tracer knows the ordering. */
- uint64_t filter_seq_num;
- /* This indicates which type of buffer this session is set for. */
- enum lttng_buffer_type buffer_type;
- /* If set to 1, the buffer_type can not be changed anymore. */
- int buffer_type_changed;
- /* For per UID buffer, every buffer reg object is kept of this session */
- struct cds_list_head buffer_reg_uid_list;
- /* Next channel ID available for a newly registered channel. */
- uint64_t next_channel_id;
- /* Once this value reaches UINT32_MAX, no more id can be allocated. */
- uint64_t used_channel_id;
- /* 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;
- unsigned int live_timer_interval; /* usec */
-
- /* Metadata channel attributes. */
- struct lttng_ust_channel_attr metadata_attr;
-
- /*
- * Path where to keep the shared memory files.
- */
- char root_shm_path[PATH_MAX];
- char shm_path[PATH_MAX];
-
- struct ust_pid_tracker pid_tracker;
-};
-
-/*
- * Validate that the id has reached the maximum allowed or not.
- *
- * Return 0 if NOT else 1.
- */
-static inline int trace_ust_is_max_id(uint64_t id)
-{
- return (id == UINT64_MAX) ? 1 : 0;
-}
-
-/*
- * Return next available channel id and increment the used counter. The
- * trace_ust_is_max_id function MUST be called before in order to validate if
- * the maximum number of IDs have been reached. If not, it is safe to call this
- * function.
- *
- * Return a unique channel ID. If max is reached, the used_channel_id counter
- * is returned.
- */
-static inline uint64_t trace_ust_get_next_chan_id(struct ltt_ust_session *s)
-{
- if (trace_ust_is_max_id(s->used_channel_id)) {
- return s->used_channel_id;
- }
-
- s->used_channel_id++;
- return s->next_channel_id++;
-}
-
-#ifdef HAVE_LIBLTTNG_UST_CTL
-
-int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key);
-int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node,
- const void *_key);
-
-/*
- * Lookup functions. NULL is returned if not found.
- */
-struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht,
- char *name, struct lttng_filter_bytecode *filter, int loglevel,
- struct lttng_event_exclusion *exclusion);
-struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht,
- char *name);
-struct agent *trace_ust_find_agent(struct ltt_ust_session *session,
- enum lttng_domain_type domain_type);
-
-/*
- * Create functions malloc() the data structure.
- */
-struct ltt_ust_session *trace_ust_create_session(uint64_t session_id);
-struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr);
-struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev,
- char *filter_expression,
- struct lttng_filter_bytecode *filter,
- struct lttng_event_exclusion *exclusion);
-struct ltt_ust_context *trace_ust_create_context(
- struct lttng_event_context *ctx);
-int trace_ust_match_context(struct ltt_ust_context *uctx,
- struct lttng_event_context *ctx);
-void trace_ust_delete_channel(struct lttng_ht *ht,
- struct ltt_ust_channel *channel);
-
-/*
- * Destroy functions free() the data structure and remove from linked list if
- * it's applies.
- */
-void trace_ust_destroy_session(struct ltt_ust_session *session);
-void trace_ust_destroy_channel(struct ltt_ust_channel *channel);
-void trace_ust_destroy_event(struct ltt_ust_event *event);
-
-int trace_ust_track_pid(struct ltt_ust_session *session, int pid);
-int trace_ust_untrack_pid(struct ltt_ust_session *session, int pid);
-
-int trace_ust_pid_tracker_lookup(struct ltt_ust_session *session, int pid);
-
-ssize_t trace_ust_list_tracker_pids(struct ltt_ust_session *session,
- int32_t **_pids);
-
-#else /* HAVE_LIBLTTNG_UST_CTL */
-
-static inline int trace_ust_ht_match_event(struct cds_lfht_node *node,
- const void *_key)
-{
- return 0;
-}
-static inline int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node,
- const void *_key)
-{
- return 0;
-}
-static inline
-struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht,
- char *name)
-{
- return NULL;
-}
-
-static inline
-struct ltt_ust_session *trace_ust_create_session(unsigned int session_id)
-{
- return NULL;
-}
-static inline
-struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr)
-{
- return NULL;
-}
-static inline
-struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev,
- const char *filter_expression,
- struct lttng_filter_bytecode *filter,
- struct lttng_event_exclusion *exclusion)
-{
- return NULL;
-}
-static inline
-void trace_ust_destroy_session(struct ltt_ust_session *session)
-{
-}
-
-static inline
-void trace_ust_destroy_channel(struct ltt_ust_channel *channel)
-{
-}
-
-static inline
-void trace_ust_destroy_event(struct ltt_ust_event *event)
-{
-}
-static inline
-struct ltt_ust_context *trace_ust_create_context(
- struct lttng_event_context *ctx)
-{
- return NULL;
-}
-static inline
-int trace_ust_match_context(struct ltt_ust_context *uctx,
- struct lttng_event_context *ctx)
-{
- return 0;
-}
-static inline struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht,
- char *name, struct lttng_filter_bytecode *filter, int loglevel,
- struct lttng_event_exclusion *exclusion)
-{
- return NULL;
-}
-static inline
-void trace_ust_delete_channel(struct lttng_ht *ht,
- struct ltt_ust_channel *channel)
-{
- return;
-}
-static inline
-struct agent *trace_ust_find_agent(struct ltt_ust_session *session,
- enum lttng_domain_type domain_type)
-{
- return NULL;
-}
-static inline
-int trace_ust_track_pid(struct ltt_ust_session *session, int pid)
-{
- return 0;
-}
-static inline
-int trace_ust_untrack_pid(struct ltt_ust_session *session, int pid)
-{
- return 0;
-}
-static inline
-int trace_ust_pid_tracker_lookup(struct ltt_ust_session *session, int pid)
-{
- return 0;
-}
-static inline
-ssize_t trace_ust_list_tracker_pids(struct ltt_ust_session *session,
- int32_t **_pids)
-{
- return -1;
-}
-#endif /* HAVE_LIBLTTNG_UST_CTL */
-
-#endif /* _LTT_TRACE_UST_H */
projects / lttng-tools.git / blobdiff