void
pool_user_query(TDS_POOL * pool, TDS_POOL_USER * puser)
{
TDS_POOL_MEMBER *pmbr;
tdsdump_log(TDS_DBG_FUNC, "pool_user_query\n");
assert(puser->assigned_member == NULL);
assert(puser->login);
puser->user_state = TDS_SRV_QUERY;
pmbr = pool_assign_idle_member(pool, puser);
if (!pmbr) {
/*
* put into wait state
* check when member is deallocated
*/
tdsdump_log(TDS_DBG_INFO1, "Not enough free members...placing user in WAIT\n");
puser->user_state = TDS_SRV_WAIT;
puser->sock.poll_recv = false;
puser->sock.poll_send = false;
dlist_user_remove(&pool->users, puser);
dlist_user_append(&pool->waiters, puser);
}
}
/*
* pool_free_user
* close out a disconnected user.
*/
void
pool_free_user(TDS_POOL *pool, TDS_POOL_USER * puser)
{
TDS_POOL_MEMBER *pmbr = puser->assigned_member;
if (pmbr) {
pool_deassign_member(pmbr);
pool_reset_member(pool, pmbr);
}
tds_free_socket(puser->sock.tds);
tds_free_login(puser->login);
/* make sure to decrement the waiters list if he is waiting */
if (puser->user_state == TDS_SRV_WAIT)
dlist_user_remove(&pool->waiters, puser);
else
dlist_user_remove(&pool->users, puser);
pool->num_users--;
free(puser);
}
static void
pool_schedule_waiters(TDS_POOL * pool)
{
TDS_POOL_USER *puser;
/* first see if there are free members to do the request */
if (!dlist_member_first(&pool->idle_members))
return;
while ((puser = dlist_user_first(&pool->waiters)) != NULL) {
if (puser->user_state == TDS_SRV_WAIT) {
/* place back in query state */
puser->user_state = TDS_SRV_QUERY;
dlist_user_remove(&pool->waiters, puser);
dlist_user_append(&pool->users, puser);
/* now try again */
pool_user_query(pool, puser);
return;
}
}
}