- /* Number of session rotation for this session. */
- uint64_t rotate_count;
- /*
- * Rotation is pending between the time it starts until the consumer has
- * finished extracting the data. If the session uses a relay, data related
- * to a rotation can still be in flight after that, see
- * rotate_pending_relay.
- */
- bool rotate_pending;
- /* Current status of a rotation. */
- enum lttng_rotation_status rotation_status;
- /*
- * Number of channels waiting for a rotation.
- * 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 {
- /*
- * 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[LTTNG_PATH_MAX];
- /*
- * The path where the consumer is currently writing after the first
- * session rotation.
- */
- char active_tracing_path[LTTNG_PATH_MAX];
- } 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 replace it
- * with the current timestamp.
- */
- time_t current_chunk_start_ts;
+ /*
+ * Timer to check periodically if a relay and/or consumer has completed
+ * the last rotation.
+ */
+ bool rotation_pending_check_timer_enabled;
+ timer_t rotation_pending_check_timer;
+ /* Timer to periodically rotate a session. */
+ bool rotation_schedule_timer_enabled;
+ timer_t rotation_schedule_timer;
+ /* Value for periodic rotations, 0 if disabled. */
+ uint64_t rotate_timer_period;
+ /* Value for size-based rotations, 0 if disabled. */
+ uint64_t rotate_size;
+ /*
+ * 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 occurred since the last stop to rename the current
+ * chunk. After a stop followed by rotate, all subsequent clear
+ * (without prior start) will succeed, but will be effect-less.
+ */
+ bool rotated_after_last_stop;
+ /*
+ * Track whether the session was cleared after last stop. All subsequent
+ * clear (without prior start) will succeed, but will be effect-less. A
+ * subsequent rotate (without prior start) will return an error.
+ */
+ bool cleared_after_last_stop;
+ /*
+ * True if the session has had an explicit non-quiet rotation.
+ */
+ bool rotated;
+ /*
+ * Condition and trigger for size-based rotations.
+ */
+ struct lttng_condition *rotate_condition;
+ struct lttng_trigger *rotate_trigger;
+ LTTNG_OPTIONAL(uint64_t) most_recent_chunk_id;
+ struct lttng_trace_chunk *current_trace_chunk;
+ struct lttng_trace_chunk *chunk_being_archived;
+ /* Current state of a rotation. */
+ enum lttng_rotation_state rotation_state;
+ bool quiet_rotation;
+ char *last_archived_chunk_name;
+ LTTNG_OPTIONAL(uint64_t) last_archived_chunk_id;
+ struct lttng_dynamic_array destroy_notifiers;
+ struct lttng_dynamic_array clear_notifiers;
+ /* Session base path override. Set non-null. */
+ char *base_path;