mirror of https://github.com/aria2/aria2
138 lines
4.1 KiB
C++
138 lines
4.1 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - a simple utility for downloading files faster
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* copyright --> */
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#include "PeerChokeCommand.h"
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#include "SleepCommand.h"
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#include "Util.h"
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PeerChokeCommand::PeerChokeCommand(int cuid, int interval, TorrentDownloadEngine* e):Command(cuid), interval(interval), e(e), rotate(0) {}
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PeerChokeCommand::~PeerChokeCommand() {}
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void PeerChokeCommand::setAllPeerChoked(Peers& peers) const {
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for(Peers::iterator itr = peers.begin(); itr != peers.end(); itr++) {
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Peer* peer = *itr;
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peer->chokingRequired = true;
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}
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}
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void PeerChokeCommand::optUnchokingPeer(Peers& peers) const {
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if(peers.empty()) {
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return;
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}
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random_shuffle(peers.begin(), peers.end());
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for(Peers::iterator itr = peers.begin(); itr != peers.end(); itr++) {
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(*itr)->optUnchoking = false;
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}
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Peer* peer = peers.front();
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peer->optUnchoking = true;
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logger->debug("opt, unchoking %s, delta=%d",
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peer->ipaddr.c_str(), peer->getDeltaUpload());
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if(e->torrentMan->isEndGame()) {
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Peers::iterator itr = peers.begin()+1;
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for(; itr != peers.end(); itr++) {
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Peer* peer = *itr;
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if(peer->amInterested && peer->peerInterested) {
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peer->optUnchoking = true;
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logger->debug("opt, unchoking %s, delta=%d",
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peer->ipaddr.c_str(), peer->getDeltaUpload());
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break;
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}
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}
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}
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}
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void PeerChokeCommand::setAllPeerResetDelta(Peers& peers) const {
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for(Peers::iterator itr = peers.begin(); itr != peers.end(); itr++) {
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Peer* peer = *itr;
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peer->resetDeltaUpload();
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peer->resetDeltaDownload();
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}
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}
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class UploadFaster {
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public:
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bool operator() (const Peer* left, const Peer* right) const {
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return left->getDeltaUpload() > right->getDeltaUpload();
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}
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};
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void PeerChokeCommand::orderByUploadRate(Peers& peers) const {
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sort(peers.begin(), peers.end(), UploadFaster());
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}
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class DownloadFaster {
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public:
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bool operator() (const Peer* left, const Peer* right) const {
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return left->getDeltaDownload() > right->getDeltaDownload();
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}
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};
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void PeerChokeCommand::orderByDownloadRate(Peers& peers) const {
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sort(peers.begin(), peers.end(), UploadFaster());
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}
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bool PeerChokeCommand::execute() {
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Peers peers = e->torrentMan->getActivePeers();
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setAllPeerChoked(peers);
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if(e->torrentMan->downloadComplete()) {
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orderByDownloadRate(peers);
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} else {
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orderByUploadRate(peers);
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}
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int unchokingCount = peers.size() >= 4 ? 4 : peers.size();
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for(Peers::iterator itr = peers.begin(); unchokingCount > 0 && itr != peers.end(); ) {
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Peer* peer = *itr;
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if(peer->peerInterested) {
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peer->chokingRequired = false;
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peer->optUnchoking = false;
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itr = peers.erase(itr);
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unchokingCount--;
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logger->debug("cat01, unchoking %s, delta=%d", peer->ipaddr.c_str(), peer->getDeltaUpload());
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} else {
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itr++;
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}
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}
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for(Peers::iterator itr = peers.begin(); itr != peers.end(); ) {
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Peer* peer = *itr;
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if(!peer->peerInterested) {
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peer->chokingRequired = false;
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peer->optUnchoking = false;
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itr = peers.erase(itr);
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logger->debug("cat02, unchoking %s, delta=%d", peer->ipaddr.c_str(), peer->getDeltaUpload());
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break;
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} else {
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itr++;
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}
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}
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if(rotate%3 == 0) {
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optUnchokingPeer(peers);
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rotate = 0;
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}
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rotate++;
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setAllPeerResetDelta(e->torrentMan->getActivePeers());
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SleepCommand* command = new SleepCommand(cuid, e, this, interval);
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e->commands.push(command);
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return false;
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}
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