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/*
Copyright (c) 2007-2011 iMatix Corporation
Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser 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
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <new>
#include "../include/zmq.h"
#include "io_thread.hpp"
#include "platform.hpp"
#include "err.hpp"
#include "ctx.hpp"
zmq::io_thread_t::io_thread_t (ctx_t *ctx_, uint32_t tid_) :
object_t (ctx_, tid_)
{
poller = new (std::nothrow) poller_t;
alloc_assert (poller);
mailbox_handle = poller->add_fd (mailbox.get_fd (), this);
poller->set_pollin (mailbox_handle);
}
zmq::io_thread_t::~io_thread_t ()
{
delete poller;
}
void zmq::io_thread_t::start ()
{
// Start the underlying I/O thread.
poller->start ();
}
void zmq::io_thread_t::stop ()
{
send_stop ();
}
zmq::mailbox_t *zmq::io_thread_t::get_mailbox ()
{
return &mailbox;
}
int zmq::io_thread_t::get_load ()
{
return poller->get_load ();
}
void zmq::io_thread_t::in_event ()
{
// TODO: Do we want to limit number of commands I/O thread can
// process in a single go?
while (true) {
// Get the next command. If there is none, exit.
command_t cmd;
int rc = mailbox.recv (&cmd, 0);
if (rc != 0 && errno == EINTR)
continue;
if (rc != 0 && errno == EAGAIN)
break;
errno_assert (rc == 0);
// Process the command.
cmd.destination->process_command (cmd);
}
}
void zmq::io_thread_t::out_event ()
{
// We are never polling for POLLOUT here. This function is never called.
zmq_assert (false);
}
void zmq::io_thread_t::timer_event (int id_)
{
// No timers here. This function is never called.
zmq_assert (false);
}
zmq::poller_t *zmq::io_thread_t::get_poller ()
{
zmq_assert (poller);
return poller;
}
void zmq::io_thread_t::process_stop ()
{
poller->rm_fd (mailbox_handle);
poller->stop ();
}
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