92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
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/*
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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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// TODO: Use two algorithms to estimate transfer rate.
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// one (simple) for transfer rates that are >= 1 packet
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// per second and one (low pass-filter) for rates < 1
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// packet per second.
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#include <numeric>
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#include "libtorrent/stat.hpp"
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#include "libtorrent/invariant_check.hpp"
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#include <algorithm>
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#if defined _MSC_VER && _MSC_VER <= 1200
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#define for if (false) {} else for
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#endif
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using namespace libtorrent;
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void libtorrent::stat::second_tick(float tick_interval)
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{
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INVARIANT_CHECK;
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for (int i = history - 2; i >= 0; --i)
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{
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m_download_rate_history[i + 1] = m_download_rate_history[i];
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m_upload_rate_history[i + 1] = m_upload_rate_history[i];
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m_download_payload_rate_history[i + 1] = m_download_payload_rate_history[i];
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m_upload_payload_rate_history[i + 1] = m_upload_payload_rate_history[i];
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}
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m_download_rate_history[0] = (m_downloaded_payload + m_downloaded_protocol)
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/ tick_interval;
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m_upload_rate_history[0] = (m_uploaded_payload + m_uploaded_protocol)
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/ tick_interval;
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m_download_payload_rate_history[0] = m_downloaded_payload / tick_interval;
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m_upload_payload_rate_history[0] = m_uploaded_payload / tick_interval;
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m_downloaded_payload = 0;
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m_uploaded_payload = 0;
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m_downloaded_protocol = 0;
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m_uploaded_protocol = 0;
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m_mean_download_rate = 0;
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m_mean_upload_rate = 0;
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m_mean_download_payload_rate = 0;
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m_mean_upload_payload_rate = 0;
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for (int i = 0; i < history; ++i)
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{
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m_mean_download_rate += m_download_rate_history[i];
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m_mean_upload_rate += m_upload_rate_history[i];
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m_mean_download_payload_rate += m_download_payload_rate_history[i];
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m_mean_upload_payload_rate += m_upload_payload_rate_history[i];
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}
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m_mean_download_rate /= history;
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m_mean_upload_rate /= history;
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m_mean_download_payload_rate /= history;
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m_mean_upload_payload_rate /= history;
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}
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