extern void setup_log(struct io_log **, struct log_params *, const char *);
extern void flush_log(struct io_log *, int);
extern void flush_samples(FILE *, void *, uint64_t);
extern void free_log(struct io_log *);
extern void setup_log(struct io_log **, struct log_params *, const char *);
extern void flush_log(struct io_log *, int);
extern void flush_samples(FILE *, void *, uint64_t);
extern void free_log(struct io_log *);