int s6lock_release (s6lock_t *a, uint16 i, tain_t const *deadline, tain_t *stamp)
{
char *p = GENSETDYN_P(char, &a->data, i) ;
if ((*p != EBUSY) && !error_isagain(*p))
{
s6lock_check(a, i) ;
return 1 ;
}
{
char err ;
char pack[3] = "-->" ;
uint16_pack_big(pack, i) ;
if (!skaclient_send(&a->connection, pack, 3, &skaclient_default_cb, &err, deadline, stamp)) return 0 ;
if (err) return (errno = err, 0) ;
}
*p = EINVAL ;
return gensetdyn_delete(&a->data, i) ;
}
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 */
}