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/*
Copyright (c) 2007-2010 iMatix Corporation
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 "../include/zmq.h"
#include "pair.hpp"
#include "err.hpp"
#include "pipe.hpp"
zmq::pair_t::pair_t (class app_thread_t *parent_) :
socket_base_t (parent_),
inpipe (NULL),
outpipe (NULL),
alive (true)
{
options.requires_in = true;
options.requires_out = true;
}
zmq::pair_t::~pair_t ()
{
if (inpipe)
inpipe->term ();
if (outpipe)
outpipe->term ();
}
void zmq::pair_t::xattach_pipes (class reader_t *inpipe_,
class writer_t *outpipe_, const blob_t &peer_identity_)
{
zmq_assert (!inpipe && !outpipe);
inpipe = inpipe_;
outpipe = outpipe_;
outpipe_alive = true;
}
void zmq::pair_t::xdetach_inpipe (class reader_t *pipe_)
{
zmq_assert (pipe_ == inpipe);
inpipe = NULL;
}
void zmq::pair_t::xdetach_outpipe (class writer_t *pipe_)
{
zmq_assert (pipe_ == outpipe);
outpipe = NULL;
}
void zmq::pair_t::xkill (class reader_t *pipe_)
{
zmq_assert (alive);
alive = false;
}
void zmq::pair_t::xrevive (class reader_t *pipe_)
{
zmq_assert (!alive);
alive = true;
}
void zmq::pair_t::xrevive (class writer_t *pipe_)
{
zmq_assert (!outpipe_alive);
outpipe_alive = true;
}
int zmq::pair_t::xsetsockopt (int option_, const void *optval_,
size_t optvallen_)
{
errno = EINVAL;
return -1;
}
int zmq::pair_t::xsend (zmq_msg_t *msg_, int flags_)
{
if (outpipe == NULL || !outpipe_alive) {
errno = EAGAIN;
return -1;
}
if (!outpipe->write (msg_)) {
outpipe_alive = false;
errno = EAGAIN;
return -1;
}
outpipe->flush ();
// Detach the original message from the data buffer.
int rc = zmq_msg_init (msg_);
zmq_assert (rc == 0);
return 0;
}
int zmq::pair_t::xrecv (zmq_msg_t *msg_, int flags_)
{
// Deallocate old content of the message.
zmq_msg_close (msg_);
if (!alive || !inpipe || !inpipe->read (msg_)) {
errno = EAGAIN;
return -1;
}
return 0;
}
bool zmq::pair_t::xhas_in ()
{
if (alive && inpipe && inpipe->check_read ())
return true;
return false;
}
bool zmq::pair_t::xhas_out ()
{
if (outpipe == NULL || !outpipe_alive)
return false;
outpipe_alive = outpipe->check_write ();
return outpipe_alive;
}
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