progress.h
#ifndef PROGRESS_H
#define PROGRESS_H
struct progress;
void display_throughput(struct progress *progress, off_t total);
int display_progress(struct progress *progress, unsigned n);
struct progress *start_progress(const char *title, unsigned total);
struct progress *start_delayed_progress(const char *title, unsigned total);
void stop_progress(struct progress **progress);
void stop_progress_msg(struct progress **progress, const char *msg);
#endif