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#ifndef HEADER_UTILS_H
#define HEADER_UTILS_H
#include <stdio.h> /* For type FILE. */
#include <sys/time.h> /* For struct timeval. */
#include <stdint.h> /* For type uint64_t. */
#include <argp.h> /* For struct argp_state. */
#define SECTOR_SIZE (512)
#define GIGABYTES (1024 * 1024 * 1024)
const char *adjust_unit(double *ptr_bytes);
/* Return true if @filename matches the regex /^[0-9]+\.h2w$/ */
int is_my_file(const char *filename);
/* Caller must free(3) the returned pointer. */
char *full_fn_from_number(const char **filename, const char *path, long num);
static inline long delay_ms(const struct timeval *t1, const struct timeval *t2)
{
return (t2->tv_sec - t1->tv_sec) * 1000 +
(t2->tv_usec - t1->tv_usec) / 1000;
}
const long *ls_my_files(const char *path, long start_at, long end_at);
void print_header(FILE *f, const char *name);
static inline uint64_t random_number(uint64_t prv_number)
{
return prv_number * 4294967311ULL + 17;
}
#define UNUSED(x) ((void)x)
long arg_to_long(const struct argp_state *state, const char *arg);
#if __APPLE__ && __MACH__
#include <unistd.h> /* For type off_t. */
#define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */
#define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */
int fdatasync(int fd);
int posix_fadvise(int fd, off_t offset, off_t len, int advice);
#endif /* Apple Macintosh */
#ifdef __FreeBSD__
#define fdatasync(fd) fsync(fd)
#endif
#endif /* HEADER_UTILS_H */
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