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vmci_connecter.hpp
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/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ZMQ_VMCI_CONNECTER_HPP_INCLUDED__
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#define __ZMQ_VMCI_CONNECTER_HPP_INCLUDED__
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#include "platform.hpp"
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#if defined ZMQ_HAVE_VMCI
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#include "
fd.hpp
"
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#include "
own.hpp
"
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#include "
stdint.hpp
"
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#include "
io_object.hpp
"
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namespace
zmq
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{
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class
io_thread_t;
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class
session_base_t;
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struct
address_t;
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class
vmci_connecter_t :
public
own_t,
public
io_object_t
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{
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public
:
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// If 'delayed_start' is true connecter first waits for a while,
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// then starts connection process.
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vmci_connecter_t (
zmq::io_thread_t
*io_thread_,
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zmq::session_base_t
*session_,
const
options_t &options_,
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const
address_t *addr_,
bool
delayed_start_);
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~vmci_connecter_t ();
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private
:
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// ID of the timer used to delay the reconnection.
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enum
{reconnect_timer_id = 1};
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// Handlers for incoming commands.
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void
process_plug ();
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void
process_term (
int
linger_);
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// Handlers for I/O events.
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void
in_event ();
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void
out_event ();
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void
timer_event (
int
id_);
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// Internal function to start the actual connection establishment.
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void
start_connecting ();
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// Internal function to add a reconnect timer
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void
add_reconnect_timer();
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// Internal function to return a reconnect backoff delay.
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// Will modify the current_reconnect_ivl used for next call
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// Returns the currently used interval
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int
get_new_reconnect_ivl ();
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// Open VMCI connecting socket. Returns -1 in case of error,
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// 0 if connect was successful immediately. Returns -1 with
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// EAGAIN errno if async connect was launched.
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int
open ();
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// Close the connecting socket.
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void
close ();
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// Get the file descriptor of newly created connection. Returns
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// retired_fd if the connection was unsuccessful.
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fd_t
connect ();
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// Address to connect to. Owned by session_base_t.
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const
address_t *addr;
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// Underlying socket.
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fd_t
s;
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// Handle corresponding to the listening socket.
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handle_t handle;
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// If true file descriptor is registered with the poller and 'handle'
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// contains valid value.
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bool
handle_valid;
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// If true, connecter is waiting a while before trying to connect.
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const
bool
delayed_start;
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// True iff a timer has been started.
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bool
timer_started;
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// Reference to the session we belong to.
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zmq::session_base_t
*session;
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// Current reconnect ivl, updated for backoff strategy
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int
current_reconnect_ivl;
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// String representation of endpoint to connect to
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std::string endpoint;
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// Socket
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zmq::socket_base_t
*socket;
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vmci_connecter_t (
const
vmci_connecter_t&);
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const
vmci_connecter_t &operator = (
const
vmci_connecter_t&);
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};
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}
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#endif
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#endif
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zmq::session_base_t
Definition:
session_base.hpp:51
fd.hpp
zmq::fd_t
int fd_t
Definition:
fd.hpp:50
zmq::socket_base_t
Definition:
socket_base.hpp:61
stdint.hpp
io_object.hpp
zmq::io_thread_t
Definition:
io_thread.hpp:49
zmq
Definition:
address.hpp:35
own.hpp
zeromq
libzmq
src
vmci_connecter.hpp
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