* iterate or/and do any actions on that list.
*/
pthread_mutex_t lock;
+ /*
+ * This condition variable is signaled on every removal from
+ * the session list.
+ */
+ pthread_cond_t removal_cond;
/*
* Session unique ID generator. The session list lock MUST be
char hostname[HOST_NAME_MAX]; /* Local hostname. */
struct ltt_kernel_session *kernel_session;
struct ltt_ust_session *ust_session;
+ struct urcu_ref ref;
/*
* Protect any read/write on this session data structure. This lock must be
* acquired *before* using any public functions declared below. Use
pthread_mutex_t lock;
struct cds_list_head list;
uint64_t id; /* session unique identifier */
+ /* Indicates if the session has been added to the session list and ht.*/
+ bool published;
+ /* Indicates if a destroy command has been applied to this session. */
+ bool destroyed;
/* UID/GID of the user owning the session */
uid_t uid;
gid_t gid;
/* Indicate if the session has to output the traces or not. */
unsigned int output_traces;
/*
- * This session is in snapshot mode. This means that every channel enabled
- * will be set in overwrite mode and mmap. It is considered exclusively for
- * snapshot purposes.
+ * This session is in snapshot mode. This means that channels enabled
+ * will be set in overwrite mode by default and must be in mmap
+ * output mode. Note that snapshots can be taken on a session that
+ * is not in "snapshot_mode". This parameter only affects channel
+ * creation defaults.
*/
unsigned int snapshot_mode;
/*
struct lttng_ht_node_u64 node;
/*
* The current archive id corresponds to the number of session rotations
- * that have occured for this session. The archive id
+ * that have occurred for this session. The archive id
* is used to tag the "generation" of a stream. This tag allows the
* consumer and relay daemons to track when a given stream was created
* during the lifetime of a session.
/*
* Keep a state if this session was rotated after the last stop command.
* We only allow one rotation after a stop. At destroy, we also need to
- * know if a rotation occured since the last stop to rename the current
+ * know if a rotation occurred since the last stop to rename the current
* chunk.
*/
bool rotated_after_last_stop;
/* Prototypes */
int session_create(char *name, uid_t uid, gid_t gid);
-int session_destroy(struct ltt_session *session);
void session_lock(struct ltt_session *session);
void session_lock_list(void);
void session_unlock(struct ltt_session *session);
void session_unlock_list(void);
+void session_destroy(struct ltt_session *session);
+
+bool session_get(struct ltt_session *session);
+void session_put(struct ltt_session *session);
+
enum consumer_dst_type session_get_consumer_destination_type(
const struct ltt_session *session);
const char *session_get_net_consumer_hostname(
struct ltt_session *session_find_by_name(const char *name);
struct ltt_session *session_find_by_id(uint64_t id);
+
struct ltt_session_list *session_get_list(void);
+void session_list_wait_empty(void);
int session_access_ok(struct ltt_session *session, uid_t uid, gid_t gid);
+int session_reset_rotation_state(struct ltt_session *session,
+ enum lttng_rotation_state result);
+
#endif /* _LTT_SESSION_H */