117 lines
3.5 KiB
C++
117 lines
3.5 KiB
C++
/*
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Copyright (c) 2007-2013, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TORRENT_BANDWIDTH_MANAGER_HPP_INCLUDED
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#define TORRENT_BANDWIDTH_MANAGER_HPP_INCLUDED
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#include <boost/intrusive_ptr.hpp>
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#ifdef TORRENT_VERBOSE_BANDWIDTH_LIMIT
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#include <fstream>
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#endif
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#include "libtorrent/socket.hpp"
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#include "libtorrent/error_code.hpp"
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#include "libtorrent/invariant_check.hpp"
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#include "libtorrent/assert.hpp"
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#include "libtorrent/bandwidth_limit.hpp"
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#include "libtorrent/bandwidth_queue_entry.hpp"
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#include "libtorrent/thread.hpp"
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#include "libtorrent/bandwidth_socket.hpp"
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#include "libtorrent/ptime.hpp"
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using boost::intrusive_ptr;
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namespace libtorrent {
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struct TORRENT_EXTRA_EXPORT bandwidth_manager
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{
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bandwidth_manager(int channel
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#ifdef TORRENT_VERBOSE_BANDWIDTH_LIMIT
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, bool log = false
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#endif
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);
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void close();
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#if defined TORRENT_DEBUG || TORRENT_RELEASE_ASSERTS
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bool is_queued(bandwidth_socket const* peer) const;
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#endif
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int queue_size() const;
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int queued_bytes() const;
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// non prioritized means that, if there's a line for bandwidth,
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// others will cut in front of the non-prioritized peers.
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// this is used by web seeds
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// returns the number of bytes to assign to the peer, or 0
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// if the peer's 'assign_bandwidth' callback will be called later
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int request_bandwidth(intrusive_ptr<bandwidth_socket> const& peer
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, int blk, int priority
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, bandwidth_channel* chan1 = 0
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, bandwidth_channel* chan2 = 0
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, bandwidth_channel* chan3 = 0
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, bandwidth_channel* chan4 = 0
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, bandwidth_channel* chan5 = 0);
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#ifdef TORRENT_DEBUG
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void check_invariant() const;
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#endif
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void update_quotas(time_duration const& dt);
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private:
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// these are the consumers that want bandwidth
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typedef std::vector<bw_request> queue_t;
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queue_t m_queue;
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// the number of bytes all the requests in queue are for
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int m_queued_bytes;
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// this is the channel within the consumers
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// that bandwidth is assigned to (upload or download)
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int m_channel;
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bool m_abort;
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#ifdef TORRENT_VERBOSE_BANDWIDTH_LIMIT
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std::ofstream m_log;
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ptime m_start;
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#endif
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};
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}
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#endif
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