+ struct trace_descriptor *(*open_trace)(const char *collection_path,
+ const char *path, int flags,
+ void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset,
+ int whence), FILE *metadata_fp);
+ struct trace_descriptor *(*open_mmap_trace)(
+ struct mmap_stream_list *mmap_list,
+ void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset,
+ int whence), FILE *metadata_fp);