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/*
Copyright (c) 2007-2009 FastMQ Inc.
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the Lesser GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Lesser GNU General Public License for more details.
You should have received a copy of the Lesser GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "zmq_init.hpp"
#include "io_thread.hpp"
#include "session.hpp"
#include "err.hpp"
zmq::zmq_init_t::zmq_init_t (io_thread_t *parent_, object_t *owner_, fd_t fd_,
bool connected_, const options_t &options_) :
owned_t (parent_, owner_),
connected (connected_),
options (options_)
{
// Create associated engine object.
engine = new zmq_engine_t (parent_, fd_);
zmq_assert (engine);
}
zmq::zmq_init_t::~zmq_init_t ()
{
if (engine)
delete engine;
}
bool zmq::zmq_init_t::read (::zmq_msg *msg_)
{
// On the listening side, no initialisation data are sent to the peer.
if (!connected)
return false;
// Send identity.
int rc = zmq_msg_init_size (msg_, options.identity.size ());
zmq_assert (rc == 0);
memcpy (zmq_msg_data (msg_), options.identity.c_str (),
options.identity.size ());
// Initialisation is done.
create_session ();
return true;
}
bool zmq::zmq_init_t::write (::zmq_msg *msg_)
{
// On the connecting side no initialisation data are expected.
if (connected)
return false;
// Retreieve the identity.
options.identity = std::string ((const char*) zmq_msg_data (msg_),
zmq_msg_size (msg_));
// Initialisation is done.
create_session ();
return true;
}
void zmq::zmq_init_t::flush ()
{
// No need to do anything. zmq_init_t does no batching of messages.
// Each message is processed immediately on write.
}
void zmq::zmq_init_t::process_plug ()
{
engine->plug (this);
owned_t::process_plug ();
}
void zmq::zmq_init_t::process_unplug ()
{
engine->unplug ();
}
void zmq::zmq_init_t::create_session ()
{
// Disconnect engine from the init object.
engine->unplug ();
// Create the session instance.
io_thread_t *io_thread = choose_io_thread (options.affinity);
session_t *session = new session_t (io_thread, owner, engine);
zmq_assert (session);
engine = NULL;
// Pass session/engine pair to a chosen I/O thread.
send_plug (session);
send_own (owner, session);
// Destroy the init object.
term ();
}
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