/* add a socket to be listened on */
static int
engine_add(struct Socket* sock)
{
assert(0 != sock);
assert(0 == sockList[s_fd(sock)]);
/* bounds-check... */
if (s_fd(sock) >= FD_SETSIZE) {
log_write(LS_SYSTEM, L_ERROR, 0,
"Attempt to add socket %d (> %d) to event engine", s_fd(sock),
FD_SETSIZE);
return 0;
}
sockList[s_fd(sock)] = sock; /* add to list */
if (s_fd(sock) >= highest_fd) /* update highest_fd */
highest_fd = s_fd(sock);
Debug((DEBUG_ENGINE, "select: Adding socket %d to engine [%p], state %s",
s_fd(sock), sock, state_to_name(s_state(sock))));
/* set the fd set bits */
set_or_clear(s_fd(sock), 0, state_to_events(s_state(sock), s_events(sock)));
return 1; /* success */
}
/** Handle change to preferred socket events.
* @param[in] sock Socket getting new interest list.
* @param[in] new_events New set of interesting events for socket.
*/
static void
engine_events(struct Socket* sock, unsigned int new_events)
{
assert(0 != sock);
assert(sock == sockList[s_fd(sock)]);
Debug((DEBUG_ENGINE, "kqueue: Changing event mask for socket %p to [%s]",
sock, sock_flags(new_events)));
/* set the correct events */
set_or_clear(sock,
state_to_events(s_state(sock), s_events(sock)), /* old events */
state_to_events(s_state(sock), new_events)); /* new events */
}
/* socket switching to new state */
static void
engine_state(struct Socket* sock, enum SocketState new_state)
{
assert(0 != sock);
assert(sock == sockList[s_fd(sock)]);
Debug((DEBUG_ENGINE, "select: Changing state for socket %p to %s", sock,
state_to_name(new_state)));
/* set the correct events */
set_or_clear(s_fd(sock),
state_to_events(s_state(sock), s_events(sock)), /* old state */
state_to_events(new_state, s_events(sock))); /* new state */
}
/** Add a socket to the event engine.
* @param[in] sock Socket to add to engine.
* @return Non-zero on success, or zero on error.
*/
static int
engine_add(struct Socket* sock)
{
assert(0 != sock);
assert(0 == sockList[s_fd(sock)]);
/* bounds-check... */
if (sock->s_fd >= kqueue_max) {
log_write(LS_SYSTEM, L_ERROR, 0,
"Attempt to add socket %d (> %d) to event engine", s_fd(sock),
kqueue_max);
return 0;
}
sockList[s_fd(sock)] = sock; /* add to list */
Debug((DEBUG_ENGINE, "kqueue: Adding socket %d [%p], state %s, to engine",
s_fd(sock), sock, state_to_name(s_state(sock))));
/* Add socket to queue */
set_or_clear(sock, 0, state_to_events(s_state(sock), s_events(sock)));
return 1; /* success */
}