int timed_ancil_fds_recv (int fdsocket, int *fds, unsigned int n, struct taia const *deadline, struct taia *stamp)
{
iopause_fd x = { fdsocket, IOPAUSE_READ, 0 } ;
for (;;)
{
register int r = iopause_stamp(&x, 1, deadline, stamp) ;
if (r < 0) return 0 ;
else if (!r) return (errno = ETIMEDOUT, 0) ;
else if (x.revents & IOPAUSE_READ)
{
r = sanitize_read(ancil_recv_fds(fdsocket, fds, n)) ;
if (r < 0) return 0 ;
else if (r > 0) break ;
}
}
return 1 ;
}
int timed_buffer_flush (buffer_ref b, struct taia const *deadline, struct taia *stamp)
{
iopause_fd x = { b->fd, IOPAUSE_WRITE, 0 } ;
while (buffer_len(b))
{
register int r = iopause_stamp(&x, 1, deadline, stamp) ;
if (r < 0) return 0 ;
else if (!r) return (errno = ETIMEDOUT, 0) ;
else if (x.revents & IOPAUSE_WRITE)
{
if ((buffer_flush(b) < 0) && !error_isagain(errno)) return 0 ;
}
else if (x.revents & IOPAUSE_EXCEPT)
{
buffer_flush(b) ; /* sets errno */
return 0 ;
}
}
return 1 ;
}
int s6lock_wait_or (s6lock_t_ref a, uint16 const *idlist, unsigned int n, struct taia const *deadline, struct taia *stamp)
{
iopause_fd x = { -1, IOPAUSE_READ | IOPAUSE_EXCEPT, 0 } ;
x.fd = s6lock_fd(a) ;
if (x.fd < 0) return -1 ;
for (;;)
{
register unsigned int i = 0 ;
register int r ;
for (; i < n ; i++)
{
r = s6lock_check(a, idlist[i]) ;
if (r < 0) return r ;
else if (r) return i ;
}
r = iopause_stamp(&x, 1, deadline, stamp) ;
if (r < 0) return 0 ;
else if (!r) return (errno = ETIMEDOUT, -1) ;
else if (s6lock_update(a) < 0) return -1 ;
}
return (errno = EPROTO, -1) ; /* can't happen */
}
unsigned int timed_buffer_get (buffer_ref b, char *s, unsigned int len, struct taia const *deadline, struct taia *stamp)
{
iopause_fd x = { -1, IOPAUSE_READ, 0 } ;
unsigned int w = 0 ;
unsigned int n = buffer_getnofill(b, s, len) ;
s += n ; len -= n ;
if (!len) return n ;
x.fd = buffer_fd(b) ;
for (;;)
{
register int r = iopause_stamp(&x, 1, deadline, stamp) ;
if (r < 0) return n+w ;
else if (!r) return (errno = ETIMEDOUT, n+w) ;
else if (x.revents & (IOPAUSE_READ | IOPAUSE_EXCEPT))
{
r = buffer_getall(b, s, len, &w) ;
if (r < 0) return n+w ;
else if (r) break ;
}
}
return n+len ;
}
void deepsleepuntil (tain_t const *deadline, tain_t *stamp)
{
iopause_fd x ;
while (tain_less(stamp, deadline)) iopause_stamp(&x, 0, deadline, stamp) ;
}