forked from premiere/premiere-libtorrent
127 lines
3.5 KiB
C++
127 lines
3.5 KiB
C++
/*
|
|
|
|
Copyright (c) 2007, Arvid Norberg
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the distribution.
|
|
* Neither the name of the author nor the names of its
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
#ifndef TORRENT_CONNECTION_QUEUE
|
|
#define TORRENT_CONNECTION_QUEUE
|
|
|
|
#include <list>
|
|
#include <boost/function/function1.hpp>
|
|
#include <boost/function/function0.hpp>
|
|
#include <boost/noncopyable.hpp>
|
|
#include "libtorrent/io_service.hpp"
|
|
#include "libtorrent/error_code.hpp"
|
|
#include "libtorrent/deadline_timer.hpp"
|
|
|
|
#ifdef TORRENT_CONNECTION_LOGGING
|
|
#include <fstream>
|
|
#endif
|
|
|
|
#include "libtorrent/thread.hpp"
|
|
|
|
namespace libtorrent
|
|
{
|
|
|
|
class TORRENT_EXTRA_EXPORT connection_queue : public boost::noncopyable
|
|
{
|
|
public:
|
|
connection_queue(io_service& ios);
|
|
|
|
// if there are no free slots, returns the negative
|
|
// number of queued up connections
|
|
int free_slots() const;
|
|
|
|
void enqueue(boost::function<void(int)> const& on_connect
|
|
, boost::function<void()> const& on_timeout
|
|
, time_duration timeout, int priority = 0);
|
|
void done(int ticket);
|
|
void limit(int limit);
|
|
int limit() const;
|
|
void close();
|
|
int size() const { return m_queue.size(); }
|
|
|
|
#ifdef TORRENT_DEBUG
|
|
void check_invariant() const;
|
|
#endif
|
|
|
|
private:
|
|
|
|
typedef mutex mutex_t;
|
|
|
|
void try_connect(mutex_t::scoped_lock& l);
|
|
void on_timeout(error_code const& e);
|
|
void on_try_connect();
|
|
|
|
struct entry
|
|
{
|
|
entry(): connecting(false), ticket(0), expires(max_time()), priority(0) {}
|
|
// called when the connection is initiated
|
|
// this is when the timeout countdown starts
|
|
boost::function<void(int)> on_connect;
|
|
// called if done hasn't been called within the timeout
|
|
// or if the connection queue aborts. This means there
|
|
// are 3 different interleaves of these function calls:
|
|
// 1. on_connect
|
|
// 2. on_connect, on_timeout
|
|
// 3. on_timeout
|
|
boost::function<void()> on_timeout;
|
|
bool connecting;
|
|
int ticket;
|
|
ptime expires;
|
|
time_duration timeout;
|
|
int priority;
|
|
};
|
|
|
|
std::list<entry> m_queue;
|
|
|
|
// the next ticket id a connection will be given
|
|
int m_next_ticket;
|
|
int m_num_connecting;
|
|
int m_half_open_limit;
|
|
bool m_abort;
|
|
|
|
deadline_timer m_timer;
|
|
|
|
mutable mutex_t m_mutex;
|
|
|
|
#ifdef TORRENT_DEBUG
|
|
bool m_in_timeout_function;
|
|
#endif
|
|
#ifdef TORRENT_CONNECTION_LOGGING
|
|
std::ofstream m_log;
|
|
#endif
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|
|
|