ref: cde4b93a27af60da423b3ed387de5f7a31ba32b7
dir: /sys/src/libthread/iosleep.c/
#include <u.h>
#include <libc.h>
#include <thread.h>
#include "threadimpl.h"
static long
_iosleep(va_list *arg)
{
	long n;
	n = va_arg(*arg, long);
	return sleep(n);
}
int
iosleep(Ioproc *io, long n)
{
	return iocall(io, _iosleep, n);
}