forked from premiere/premiere-libtorrent
324 lines
8.8 KiB
C++
324 lines
8.8 KiB
C++
/*
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Copyright (c) 2003, 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_STAT_HPP_INCLUDED
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#define TORRENT_STAT_HPP_INCLUDED
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#include <algorithm>
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#include <vector>
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#include <assert.h>
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#include <cstring>
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#include "libtorrent/size_type.hpp"
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#include "libtorrent/invariant_check.hpp"
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#include "libtorrent/config.hpp"
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#include "libtorrent/assert.hpp"
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namespace libtorrent
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{
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class TORRENT_EXPORT stat_channel
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{
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friend class invariant_access;
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public:
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enum { history = 10 };
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stat_channel()
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: m_counter(0)
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, m_total_counter(0)
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, m_rate_sum(0)
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{
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std::memset(m_rate_history, 0, sizeof(m_rate_history));
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}
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void operator+=(stat_channel const& s)
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{
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m_counter += s.m_counter;
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m_total_counter += s.m_counter;
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}
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void add(int count)
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{
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TORRENT_ASSERT(count >= 0);
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m_counter += count;
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m_total_counter += count;
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}
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// should be called once every second
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void second_tick(float tick_interval);
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float rate() const { return m_rate_sum / float(history); }
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size_type rate_sum() const { return m_rate_sum; }
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size_type total() const { return m_total_counter; }
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void offset(size_type counter)
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{
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TORRENT_ASSERT(counter >= 0);
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m_total_counter += counter;
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}
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size_type counter() const { return m_counter; }
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void clear()
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{
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std::memset(m_rate_history, 0, sizeof(m_rate_history));
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m_counter = 0;
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m_total_counter = 0;
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m_rate_sum = 0;
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}
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private:
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#ifdef TORRENT_DEBUG
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void check_invariant() const
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{
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int sum = 0;
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for (int i = 0; i < history; ++i) sum += m_rate_history[i];
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TORRENT_ASSERT(m_rate_sum == sum);
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TORRENT_ASSERT(m_total_counter >= 0);
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}
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#endif
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// history of rates a few seconds back
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int m_rate_history[history];
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// the accumulator for this second.
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int m_counter;
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// total counters
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size_type m_total_counter;
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// sum of all elements in m_rate_history
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size_type m_rate_sum;
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};
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class TORRENT_EXPORT stat
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{
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friend class invariant_access;
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public:
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void operator+=(const stat& s)
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{
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for (int i = 0; i < num_channels; ++i)
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m_stat[i] += s.m_stat[i];
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}
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void sent_syn(bool ipv6)
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{
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m_stat[upload_ip_protocol].add(ipv6 ? 60 : 40);
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}
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void received_synack(bool ipv6)
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{
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// we received SYN-ACK and also sent ACK back
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m_stat[download_ip_protocol].add(ipv6 ? 60 : 40);
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m_stat[upload_ip_protocol].add(ipv6 ? 60 : 40);
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}
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void received_dht_bytes(int bytes)
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{
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TORRENT_ASSERT(bytes >= 0);
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m_stat[download_dht_protocol].add(bytes);
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}
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void sent_dht_bytes(int bytes)
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{
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TORRENT_ASSERT(bytes >= 0);
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m_stat[upload_dht_protocol].add(bytes);
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}
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void received_tracker_bytes(int bytes)
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{
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TORRENT_ASSERT(bytes >= 0);
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m_stat[download_tracker_protocol].add(bytes);
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}
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void sent_tracker_bytes(int bytes)
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{
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TORRENT_ASSERT(bytes >= 0);
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m_stat[upload_tracker_protocol].add(bytes);
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}
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void received_bytes(int bytes_payload, int bytes_protocol)
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{
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TORRENT_ASSERT(bytes_payload >= 0);
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TORRENT_ASSERT(bytes_protocol >= 0);
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m_stat[download_payload].add(bytes_payload);
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m_stat[download_protocol].add(bytes_protocol);
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}
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void sent_bytes(int bytes_payload, int bytes_protocol)
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{
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TORRENT_ASSERT(bytes_payload >= 0);
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TORRENT_ASSERT(bytes_protocol >= 0);
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m_stat[upload_payload].add(bytes_payload);
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m_stat[upload_protocol].add(bytes_protocol);
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}
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// and IP packet was received or sent
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// account for the overhead caused by it
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void trancieve_ip_packet(int bytes_transferred, bool ipv6)
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{
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// one TCP/IP packet header for the packet
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// sent or received, and one for the ACK
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// The IPv4 header is 20 bytes
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// and IPv6 header is 40 bytes
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const int header = (ipv6 ? 40 : 20) + 20;
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const int mtu = 1500;
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const int packet_size = mtu - header;
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const int overhead = (std::max)(1, (bytes_transferred + packet_size - 1) / packet_size) * header;
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m_stat[download_ip_protocol].add(overhead);
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m_stat[upload_ip_protocol].add(overhead);
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}
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int upload_ip_overhead() const { return m_stat[upload_ip_protocol].counter(); }
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int download_ip_overhead() const { return m_stat[download_ip_protocol].counter(); }
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int upload_dht() const { return m_stat[upload_dht_protocol].counter(); }
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int download_dht() const { return m_stat[download_dht_protocol].counter(); }
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int download_tracker() const { return m_stat[download_tracker_protocol].counter(); }
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int upload_tracker() const { return m_stat[upload_tracker_protocol].counter(); }
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// should be called once every second
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void second_tick(float tick_interval)
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{
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for (int i = 0; i < num_channels; ++i)
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m_stat[i].second_tick(tick_interval);
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}
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float upload_rate() const
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{
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return (m_stat[upload_payload].rate_sum()
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+ m_stat[upload_protocol].rate_sum()
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+ m_stat[upload_ip_protocol].rate_sum()
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+ m_stat[upload_dht_protocol].rate_sum())
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/ float(stat_channel::history);
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}
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float download_rate() const
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{
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return (m_stat[download_payload].rate_sum()
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+ m_stat[download_protocol].rate_sum()
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+ m_stat[download_ip_protocol].rate_sum()
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+ m_stat[download_dht_protocol].rate_sum())
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/ float(stat_channel::history);
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}
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size_type total_upload() const
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{
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return m_stat[upload_payload].total()
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+ m_stat[upload_protocol].total()
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+ m_stat[upload_ip_protocol].total()
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+ m_stat[upload_dht_protocol].total()
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+ m_stat[upload_tracker_protocol].total();
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}
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size_type total_download() const
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{
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return m_stat[download_payload].total()
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+ m_stat[download_protocol].total()
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+ m_stat[download_ip_protocol].total()
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+ m_stat[download_dht_protocol].total()
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+ m_stat[download_tracker_protocol].total();
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}
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float upload_payload_rate() const
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{ return m_stat[upload_payload].rate(); }
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float download_payload_rate() const
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{ return m_stat[download_payload].rate(); }
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size_type total_payload_upload() const
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{ return m_stat[upload_payload].total(); }
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size_type total_payload_download() const
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{ return m_stat[download_payload].total(); }
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size_type total_protocol_upload() const
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{ return m_stat[upload_protocol].total(); }
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size_type total_protocol_download() const
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{ return m_stat[download_protocol].total(); }
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size_type total_transfer(int channel) const
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{ return m_stat[channel].total(); }
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float transfer_rate(int channel) const
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{ return m_stat[channel].rate(); }
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// this is used to offset the statistics when a
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// peer_connection is opened and have some previous
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// transfers from earlier connections.
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void add_stat(size_type downloaded, size_type uploaded)
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{
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TORRENT_ASSERT(downloaded >= 0);
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TORRENT_ASSERT(uploaded >= 0);
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m_stat[download_payload].offset(downloaded);
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m_stat[upload_payload].offset(uploaded);
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}
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size_type last_payload_downloaded() const
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{ return m_stat[download_payload].counter(); }
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size_type last_payload_uploaded() const
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{ return m_stat[upload_payload].counter(); }
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size_type last_protocol_downloaded() const
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{ return m_stat[download_protocol].counter(); }
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size_type last_protocol_uploaded() const
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{ return m_stat[upload_protocol].counter(); }
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// these are the channels we keep stats for
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enum
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{
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upload_payload,
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upload_protocol,
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upload_ip_protocol,
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upload_dht_protocol,
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upload_tracker_protocol,
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download_payload,
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download_protocol,
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download_ip_protocol,
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download_dht_protocol,
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download_tracker_protocol,
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num_channels
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};
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void clear()
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{
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for (int i = 0; i < num_channels; ++i)
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m_stat[i].clear();
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}
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private:
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stat_channel m_stat[num_channels];
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};
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}
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#endif // TORRENT_STAT_HPP_INCLUDED
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