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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/>.
*/
#ifndef __ZMQ_MAILBOX_HPP_INCLUDED__
#define __ZMQ_MAILBOX_HPP_INCLUDED__
#include <stddef.h>
#include "platform.hpp"
#include "signaler.hpp"
#include "fd.hpp"
#include "config.hpp"
#include "command.hpp"
#include "ypipe.hpp"
#include "mutex.hpp"
namespace zmq
{
class mailbox_t
{
public:
mailbox_t ();
~mailbox_t ();
fd_t get_fd ();
void send (const command_t &cmd_);
int recv (command_t *cmd_, int timeout_);
private:
// The pipe to store actual commands.
typedef ypipe_t <command_t, command_pipe_granularity> cpipe_t;
cpipe_t cpipe;
// Signaler to pass signals from writer thread to reader thread.
signaler_t signaler;
// There's only one thread receiving from the mailbox, but there
// is arbitrary number of threads sending. Given that ypipe requires
// synchronised access on both of its endpoints, we have to synchronise
// the sending side.
mutex_t sync;
// True if the underlying pipe is active, ie. when we are allowed to
// read commands from it.
bool active;
// Disable copying of mailbox_t object.
mailbox_t (const mailbox_t&);
const mailbox_t &operator = (const mailbox_t&);
};
}
#endif
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