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/*
Copyright (c) 2007-2013 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_XPUB_HPP_INCLUDED__
#define __ZMQ_XPUB_HPP_INCLUDED__
#include <deque>
#include <string>
#include "socket_base.hpp"
#include "session_base.hpp"
#include "mtrie.hpp"
#include "array.hpp"
#include "dist.hpp"
namespace zmq
{
class ctx_t;
class msg_t;
class pipe_t;
class io_thread_t;
class xpub_t :
public socket_base_t
{
public:
xpub_t (zmq::ctx_t *parent_, uint32_t tid_, int sid_);
~xpub_t ();
// Implementations of virtual functions from socket_base_t.
void xattach_pipe (zmq::pipe_t *pipe_, bool subscribe_to_all_ = false);
int xsend (zmq::msg_t *msg_);
bool xhas_out ();
int xrecv (zmq::msg_t *msg_);
bool xhas_in ();
void xread_activated (zmq::pipe_t *pipe_);
void xwrite_activated (zmq::pipe_t *pipe_);
int xsetsockopt (int option_, const void *optval_, size_t optvallen_);
void xpipe_terminated (zmq::pipe_t *pipe_);
private:
// Function to be applied to the trie to send all the subsciptions
// upstream.
static void send_unsubscription (unsigned char *data_, size_t size_,
void *arg_);
// Function to be applied to each matching pipes.
static void mark_as_matching (zmq::pipe_t *pipe_, void *arg_);
// List of all subscriptions mapped to corresponding pipes.
mtrie_t subscriptions;
// Distributor of messages holding the list of outbound pipes.
dist_t dist;
// If true, send all subscription messages upstream, not just
// unique ones
bool verbose;
// True if we are in the middle of sending a multi-part message.
bool more;
// List of pending (un)subscriptions, ie. those that were already
// applied to the trie, but not yet received by the user.
typedef std::basic_string <unsigned char> blob_t;
std::deque <blob_t> pending_data;
std::deque <unsigned char> pending_flags;
xpub_t (const xpub_t&);
const xpub_t &operator = (const xpub_t&);
};
}
#endif