int sp_recv (int eid, char **ubuf)
{
struct epbase *ep = eid_get (eid);
if (!ep) {
ERRNO_RETURN (EBADF);
}
mutex_lock (&ep->lock);
/* All the received message would saved in the rcv.head. if the endpoint
* status ok and the rcv.head is empty, we wait here. when the endpoint
* status is bad or has messages come, the wait return.
* TODO: can condition_wait support timeout.
*/
while (!ep->status.shutdown && list_empty (&ep->rcv.head)) {
ep->rcv.waiters++;
condition_wait (&ep->cond, &ep->lock);
ep->rcv.waiters--;
}
/* Check the endpoint status, maybe it's bad */
if (ep->status.shutdown) {
mutex_unlock (&ep->lock);
eid_put (eid);
ERRNO_RETURN (EBADF);
}
msgbuf_head_out (&ep->rcv, ubuf);
mutex_unlock (&ep->lock);
eid_put (eid);
return 0;
}
int sp_getopt(int eid, int opt, void *optval, int *optlen) {
int rc;
struct epbase *ep = eid_get(eid);
if (!ep) {
errno = EBADF;
return -1;
}
rc = ep->vfptr.getopt(ep, opt, optval, optlen);
eid_put(eid);
return rc;
}
static int set_proxyto (struct epbase *ep, void *optval, int optlen)
{
int rc;
int backend_eid = * (int *) optval;
struct epbase *peer = eid_get (backend_eid);
if (!peer) {
ERRNO_RETURN (EBADF);
}
rc = epbase_proxyto (ep, peer);
eid_put (backend_eid);
return rc;
}
int sp_add (int eid, int fd)
{
struct epbase *ep = eid_get (eid);
int rc;
int on = 1;
struct tgtd *tg;
if (!ep) {
ERRNO_RETURN (EBADF);
}
if ( (tg = ep->vfptr.join (ep, fd) ) ) {
if ((rc = epbase_add_tgtd (ep, tg))) {
ep->vfptr.term (ep, tg);
eid_put (eid);
return -1;
}
}
xsetopt (fd, XL_SOCKET, XNOBLOCK, &on, sizeof (on) );
eid_put (eid);
return 0;
}