mirror of https://github.com/aria2/aria2
new
Tatsuhiro Tsujikawa
parent
2462a3b06c
commit
5a624f5a3d
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/* <!-- 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 "SegmentSplitter.h"
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#include "Util.h"
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void SegmentSplitter::split(Segment& seg, int cuid, Segment& s) const {
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long long int nep = (s.ep-(s.sp+s.ds))/2+(s.sp+s.ds);
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seg.cuid = cuid;
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seg.sp = nep+1;
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seg.ep = s.ep;
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seg.ds = 0;
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seg.speed = s.speed;
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seg.finish = false;
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s.ep = nep;
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logger->debug("return new segment { "
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"sp = "+Util::llitos(seg.sp)+", "+
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"ep = "+Util::llitos(seg.ep)+", "+
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"ds = "+Util::llitos(seg.ds)+", "+
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"speed = "+Util::itos(seg.speed)+" } to "+
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"cuid "+Util::llitos(cuid));
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logger->debug("update segment { "
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"sp = "+Util::llitos(s.sp)+", "+
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"ep = "+Util::llitos(s.ep)+", "+
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"ds = "+Util::llitos(s.ds)+", "+
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"speed = "+Util::itos(s.speed)+" } of "+
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"cuid "+Util::llitos(s.cuid));
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}
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/* <!-- 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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#ifndef _D_SEGMENT_SPLITTER_H_
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#define _D_SEGMENT_SPLITTER_H_
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#include "Segment.h"
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#include "Logger.h"
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class SegmentSplitter {
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protected:
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long long int minSegmentSize;
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void split(Segment& seg, int cuid, Segment& s) const;
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public:
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const Logger* logger;
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virtual ~SegmentSplitter() {}
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virtual bool splitSegment(Segment& newSegment, int cuid, Segments& segments) = 0;
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void setMinSegmentSize(long long int size) { minSegmentSize = size; }
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long long int getMinSegmentSize() const { return minSegmentSize; }
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};
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#endif // _D_SEGMENT_SPLITTER_H_
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@ -0,0 +1,37 @@
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/* <!-- 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 "SplitFirstSegmentSplitter.h"
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bool SplitFirstSegmentSplitter::splitSegment(Segment& seg, int cuid, Segments& segments) {
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for(vector<Segment>::iterator itr = segments.begin(); itr != segments.end(); itr++) {
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Segment& s = *itr;
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if(s.finish) {
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continue;
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}
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if(s.ep-(s.sp+s.ds) > minSegmentSize) {
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split(seg, cuid, s);
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segments.push_back(seg);
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return true;
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}
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}
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return false;
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}
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@ -0,0 +1,34 @@
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/* <!-- 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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#ifndef _D_SPLIT_FIRST_SEGMENT_SPLITTER_H_
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#define _D_SPLIT_FIRST_SEGMENT_SPLITTER_H_
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#include "SegmentSplitter.h"
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class SplitFirstSegmentSplitter : public SegmentSplitter {
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public:
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SplitFirstSegmentSplitter() {}
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~SplitFirstSegmentSplitter() {}
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bool splitSegment(Segment& newSegment, int cuid, Segments& segments);
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};
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#endif // _D_SPLIT_FIRST_SEGMENT_SPLITTER_H_
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@ -0,0 +1,50 @@
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/* <!-- 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 "SplitSlowestSegmentSplitter.h"
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bool SplitSlowestSegmentSplitter::splitSegment(Segment& seg, int cuid, Segments& segments) {
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vector<Segment>::iterator slowest = segments.end();;
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for(vector<Segment>::iterator itr = segments.begin(); itr != segments.end(); itr++) {
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Segment& s = *itr;
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if(s.finish) {
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continue;
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}
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if(s.ep-(s.sp+s.ds) <= minSegmentSize) {
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continue;
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}
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if(slowest == segments.end()) {
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slowest = itr;
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} else {
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Segment sl = *slowest;
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if((sl.ep-(sl.sp+sl.ds))/(sl.speed+1) < (s.ep-(s.sp+s.ds))/(s.speed+1)) {
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slowest = itr;
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}
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}
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}
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if(slowest == segments.end()) {
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return false;
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} else {
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split(seg, cuid, *slowest);
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segments.push_back(seg);
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return true;
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}
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}
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@ -0,0 +1,35 @@
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/* <!-- 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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#ifndef _D_SPLIT_SLOWEST_SEGMENT_SPLITTER_H_
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#define _D_SPLIT_SLOWEST_SEGMENT_SPLITTER_H_
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#include "SegmentSplitter.h"
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class SplitSlowestSegmentSplitter : public SegmentSplitter {
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public:
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SplitSlowestSegmentSplitter() {}
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~SplitSlowestSegmentSplitter() {}
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bool splitSegment(Segment& segment, int cuid, Segments& segments);
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};
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#endif // _D_SPLIT_SLOWEST_SEGMENT_SPLITTER_H_
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