MulticastSession*
MulticastTransport::start_session(const MulticastDataLink_rch& link,
MulticastPeer remote_peer, bool active)
{
if (link.is_nil()) {
ACE_ERROR_RETURN((LM_ERROR,
ACE_TEXT("(%P|%t) ERROR: ")
ACE_TEXT("MulticastTransport[%C]::start_session: ")
ACE_TEXT("link is nil\n"),
this->config_i_->name().c_str()),
0);
}
MulticastSession_rch session = link->find_or_create_session(remote_peer);
if (session.is_nil()) {
ACE_ERROR_RETURN((LM_ERROR,
ACE_TEXT("(%P|%t) ERROR: ")
ACE_TEXT("MulticastTransport[%C]::start_session: ")
ACE_TEXT("failed to create session for remote peer: 0x%x!\n"),
this->config_i_->name().c_str(), remote_peer),
0);
}
if (!session->start(active)) {
ACE_ERROR_RETURN((LM_ERROR,
ACE_TEXT("(%P|%t) ERROR: ")
ACE_TEXT("MulticastTransport[%C]::start_session: ")
ACE_TEXT("failed to start session for remote peer: 0x%x!\n"),
this->config_i_->name().c_str(), remote_peer),
0);
}
return session._retn();
}
MulticastSession*
MulticastDataLink::find_or_create_session(MulticastPeer remote_peer)
{
ACE_GUARD_RETURN(ACE_SYNCH_RECURSIVE_MUTEX,
guard,
this->session_lock_,
false);
MulticastSessionMap::iterator it(this->sessions_.find(remote_peer));
if (it != this->sessions_.end()) return it->second.in(); // already exists
MulticastSession_rch session =
this->session_factory_->create(this, remote_peer);
if (session.is_nil()) {
ACE_ERROR_RETURN((LM_ERROR,
ACE_TEXT("(%P|%t) ERROR: ")
ACE_TEXT("MulticastDataLink::find_or_create_session: ")
ACE_TEXT("failed to create session for remote peer: 0x%x!\n"),
remote_peer),
false);
}
std::pair<MulticastSessionMap::iterator, bool> pair = this->sessions_.insert(
MulticastSessionMap::value_type(remote_peer, session));
if (pair.first == this->sessions_.end()) {
ACE_ERROR_RETURN((LM_ERROR,
ACE_TEXT("(%P|%t) ERROR: ")
ACE_TEXT("MulticastDataLink::find_or_create_session: ")
ACE_TEXT("failed to insert session for remote peer: 0x%x!\n"),
remote_peer),
false);
}
return session._retn();
}