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100 lines
2.7 KiB
C++
100 lines
2.7 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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namespace ripple {
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namespace PeerFinder {
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Slots::Slots ()
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: startTime (0)
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, peerCount (0)
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, inboundCount (0)
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, outboundCount (0)
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, outDesired (0)
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, inboundSlots (0)
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, inboundSlotsMaximum (0)
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, m_roundUpwards (Random::getSystemRandom().nextBool())
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{
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}
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void Slots::update (Config const& config)
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{
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if (! config.wantIncoming)
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{
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inboundSlots = 0;
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inboundSlotsMaximum = 0;
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}
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else
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{
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double outDesiredFraction (
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config.maxPeerCount * (Config::outPercent * .01));
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if (m_roundUpwards)
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outDesired = int (std::ceil (outDesiredFraction));
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else
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outDesired = int (std::floor (outDesiredFraction));
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if (outDesired < Config::minOutCount)
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outDesired = Config::minOutCount;
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if (config.maxPeerCount >= outDesired)
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inboundSlotsMaximum = config.maxPeerCount - outDesired;
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else
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inboundSlotsMaximum = 0;
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inboundSlots = std::max (inboundSlotsMaximum - inboundCount, 0);
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}
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}
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void Slots::addPeer (Config const& config, bool inbound)
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{
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if (peerCount == 0)
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startTime = Time::getCurrentTime();
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++peerCount;
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if (inbound)
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++inboundCount;
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else
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++outboundCount;
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update (config);
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}
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void Slots::dropPeer (Config const& config, bool inbound)
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{
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--peerCount;
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if (inbound)
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--inboundCount;
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else
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--outboundCount;
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if (peerCount == 0)
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startTime = Time (0);
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update (config);
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}
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uint32 Slots::uptimeMinutes () const
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{
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if (startTime.isNotNull())
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return (Time::getCurrentTime()-startTime).inMinutes();
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return 0;
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}
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}
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}
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