/* See LICENSE file for copyright and license details. */
#include <sys/mount.h>
#include <pthread.h>
#include <libsimple.h>


#define NANOSECONDS(X) X##L
#define MICROSECONDS(X) NANOSECONDS(X##000)
#define MILLISECONDS(X) MICROSECONDS(X##000)
#define CENTISECONDS(X) MILLISECONDS(X##0)
#define DECISECONDS(X) CENTISECONDS(X##0)
#define WHOLE_SECOND DECISECONDS(10)


enum direction {
	FORWARDS = 0,
	BACKWARDS = 1
};

struct span {
	off_t start;
	off_t end;
	off_t bad;
	size_t blocksize;
};


/* io.c */
off_t filesize(int fd, const char *fname);

/* fmt.c */
const char *humansize1000(off_t s, char *buf);
const char *humansize1024(off_t s, char *buf);
#if defined(__GNUC__)
__attribute__((__pure__))
#endif
off_t unhumansize(const char *s, char flag);
const char *durationstr(const struct timespec *dur, char *buf, int second_decimals);
const char *humanbytespersecond(double bytes_per_second, char *buf);

/* text.c */
int have_micro_symbol(void);

/* avg.c */
void wravg_init(const struct timespec *start_time);
void wravg_update_write(ssize_t amount);
void wravg_update_time(const struct timespec *now);
const char *wravg_get(const struct timespec *now);

/* rnd.c */
#if defined(__GNUC__)
__attribute__((__const__))
#endif
size_t max_blksize(void);
void init_random(int fd, const char *fname);
const char *get_random(size_t needed);
void used_random(ssize_t amount);