+ int (*close_trace)(struct bt_trace_descriptor *descriptor);
+ void (*set_context)(struct bt_trace_descriptor *descriptor,
+ struct bt_context *ctx);
+ void (*set_handle)(struct bt_trace_descriptor *descriptor,
+ struct bt_trace_handle *handle);
+ int (*timestamp_begin)(struct bt_trace_descriptor *descriptor,
+ struct bt_trace_handle *handle, enum bt_clock_type type,
+ int64_t *timestamp);
+ int (*timestamp_end)(struct bt_trace_descriptor *descriptor,
+ struct bt_trace_handle *handle, enum bt_clock_type type,
+ int64_t *timestamp);
+ int (*convert_index_timestamp)(struct bt_trace_descriptor *descriptor);