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269520ee69
This is desirable so that we don't have to wake up disk if control file is not changed, and it is not have to be written again. We use the same method (SHA1 hash) to check the content is the same. The limitation is the hash is stored in memory, so we have to write the first time in each session. See GH-382
106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef D_DEFAULT_BT_PROGRESS_INFO_FILE_H
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#define D_DEFAULT_BT_PROGRESS_INFO_FILE_H
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#include "BtProgressInfoFile.h"
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#include <memory>
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namespace aria2 {
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class DownloadContext;
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class PieceStorage;
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class PeerStorage;
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class BtRuntime;
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class Option;
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class IOFile;
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class DefaultBtProgressInfoFile : public BtProgressInfoFile {
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private:
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std::shared_ptr<DownloadContext> dctx_;
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std::shared_ptr<PieceStorage> pieceStorage_;
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#ifdef ENABLE_BITTORRENT
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std::shared_ptr<PeerStorage> peerStorage_;
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std::shared_ptr<BtRuntime> btRuntime_;
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#endif // ENABLE_BITTORRENT
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const Option* option_;
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std::string filename_;
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// Last SHA1 digest value of the content written. Initially, this
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// is empty string. This is used to avoid to write same content
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// repeatedly, which could wake up disk that may be sleeping.
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std::string lastDigest_;
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bool isTorrentDownload();
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void save(IOFile& fp);
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public:
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DefaultBtProgressInfoFile(const std::shared_ptr<DownloadContext>& btContext,
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const std::shared_ptr<PieceStorage>& pieceStorage,
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const Option* option);
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virtual ~DefaultBtProgressInfoFile();
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virtual std::string getFilename() CXX11_OVERRIDE { return filename_; }
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virtual bool exists() CXX11_OVERRIDE;
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virtual void save() CXX11_OVERRIDE;
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virtual void load() CXX11_OVERRIDE;
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virtual void removeFile() CXX11_OVERRIDE;
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// re-set filename using current dctx_.
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virtual void updateFilename() CXX11_OVERRIDE;
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#ifdef ENABLE_BITTORRENT
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// for torrents
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void setPeerStorage(const std::shared_ptr<PeerStorage>& peerStorage);
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void setBtRuntime(const std::shared_ptr<BtRuntime>& btRuntime);
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#endif // ENABLE_BITTORRENT
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static const std::string& getSuffix()
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{
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static std::string suffix = ".aria2";
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return suffix;
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}
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};
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} // namespace aria2
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#endif // D_DEFAULT_BT_PROGRESS_INFO_FILE_H
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