struct cds_list_head head;
};
+struct ltt_session_chunk {
+ /*
+ * When the rotation is in progress, the temporary path name is
+ * stored here. When the rotation is complete, the final path name
+ * is here and can be queried with the rotate_pending call.
+ */
+ char current_rotate_path[PATH_MAX];
+ /*
+ * The path where the consumer is currently writing after the first
+ * session rotation.
+ */
+ char active_tracing_path[PATH_MAX];
+};
+
/*
* This data structure contains information needed to identify a tracing
* session for both LTTng and UST.
* Node in ltt_sessions_ht_by_id.
*/
struct lttng_ht_node_u64 node;
+ /*
+ * Number of session rotation for this session.
+ */
+ uint64_t rotate_count;
+ bool rotate_pending;
+ bool rotate_pending_relay;
+ enum lttng_rotate_status rotate_status;
+ /*
+ * Number of channels waiting for a rotate.
+ * When this number reaches 0, we can handle the rename of the chunk
+ * folder and inform the client that the rotate is finished.
+ */
+ unsigned int nr_chan_rotate_pending;
+ struct ltt_session_chunk rotation_chunk;
+ /*
+ * The timestamp of the beginning of the previous chunk. For the
+ * first chunk, this is the "lttng start" timestamp. For the
+ * subsequent ones, this copies the current_chunk_start_ts value when
+ * a new rotation starts. This value is used to set the name of a
+ * complete chunk directory, ex: "last_chunk_start_ts-now()".
+ */
+ time_t last_chunk_start_ts;
+ /*
+ * This is the timestamp when a new chunk starts. When a new rotation
+ * starts, we copy this value to last_chunk_start_ts and override it
+ * with the current timestamp.
+ */
+ time_t current_chunk_start_ts;
+ time_t session_last_stop_ts;
+ time_t last_begin_rotation_ts;
+ /*
+ * Timer to check periodically if a relay has completed the last
+ * rotation.
+ */
+ int rotate_relay_pending_timer_enabled;
+ timer_t rotate_relay_pending_timer;
};
/* Prototypes */