struct multi_tcp *
multi_tcp_init(int maxevents, int *maxclients)
{
struct multi_tcp *mtcp;
const int extra_events = BASE_N_EVENTS;
ASSERT(maxevents >= 1);
ASSERT(maxclients);
ALLOC_OBJ_CLEAR(mtcp, struct multi_tcp);
mtcp->maxevents = maxevents + extra_events;
mtcp->es = event_set_init(&mtcp->maxevents, 0);
wait_signal(mtcp->es, MTCP_SIG);
ALLOC_ARRAY(mtcp->esr, struct event_set_return, mtcp->maxevents);
*maxclients = max_int(min_int(mtcp->maxevents - extra_events, *maxclients), 1);
msg(D_MULTI_LOW, "MULTI: TCP INIT maxclients=%d maxevents=%d", *maxclients, mtcp->maxevents);
return mtcp;
}
/*
* This is the main function for the port share proxy background process.
*/
static void
port_share_proxy (const in_addr_t hostaddr,
const int port,
const socket_descriptor_t sd_control,
const int max_initial_buf,
const char *journal_dir)
{
if (send_control (sd_control, RESPONSE_INIT_SUCCEEDED) >= 0)
{
void *sd_control_marker = (void *)1;
int maxevents = 256;
struct event_set *es;
struct event_set_return esr[64];
struct proxy_connection *list = NULL;
time_t last_housekeeping = 0;
msg (D_PS_PROXY, "PORT SHARE PROXY: proxy starting");
es = event_set_init (&maxevents, 0);
event_ctl (es, sd_control, EVENT_READ, sd_control_marker);
while (true)
{
int n_events;
struct timeval tv;
time_t current;
tv.tv_sec = 10;
tv.tv_usec = 0;
n_events = event_wait (es, &tv, esr, SIZE(esr));
/*dmsg (D_PS_PROXY_DEBUG, "PORT SHARE PROXY: event_wait returned %d", n_events);*/
current = time(NULL);
if (n_events > 0)
{
int i;
for (i = 0; i < n_events; ++i)
{
const struct event_set_return *e = &esr[i];
if (e->arg == sd_control_marker)
{
if (!control_message_from_parent (sd_control, &list, es, hostaddr, port, max_initial_buf, journal_dir))
goto done;
}
else
{
struct proxy_connection *pc = (struct proxy_connection *)e->arg;
if (pc->defined)
proxy_connection_io_dispatch (pc, e->rwflags, es);
}
}
}
else if (n_events < 0)
{
dmsg (D_PS_PROXY_DEBUG, "PORT SHARE PROXY: event_wait failed");
}
if (current > last_housekeeping)
{
proxy_list_housekeeping (&list);
last_housekeeping = current;
}
}
done:
proxy_list_close (&list);
event_free (es);
}
msg (M_INFO, "PORT SHARE PROXY: proxy exiting");
}