aria2/src/PriorityPieceSelector.cc

58 lines
2.1 KiB
C++

/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2009 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "PriorityPieceSelector.h"
#include "bitfield.h"
namespace aria2 {
PriorityPieceSelector::PriorityPieceSelector
(const SharedHandle<PieceSelector>& selector):
selector_(selector) {}
bool PriorityPieceSelector::select
(size_t& index, const unsigned char* bitfield, size_t nbits) const
{
for(std::vector<size_t>::const_iterator i = prioritizedPieces_.begin(),
eoi = prioritizedPieces_.end(); i != eoi; ++i) {
if(bitfield::test(bitfield, nbits, *i)) {
index = *i;
return true;
}
}
return selector_->select(index, bitfield, nbits);
}
} // namespace aria2