newlib-cygwin/newlib/libc/sys/linux/usleep.c

21 lines
438 B
C

/* libc/sys/linux/usleep.c - usleep function */
/* Written 2002 by Jeff Johnston */
#include <errno.h>
#include <sys/types.h>
#include <sys/time.h>
#include <linux/times.h>
int usleep(__useconds_t useconds)
{
struct timespec ts;
ts.tv_sec = (long int)useconds / 1000000;
ts.tv_nsec = ((long int)useconds % 1000000) * 1000;
if (!nanosleep(&ts,&ts)) return 0;
if (errno == EINTR) return ts.tv_sec;
return -1;
}