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qBittorrent/src/base/bittorrent/resumedatastorage.h
Vladimir Golovnev be7cfb78de
Restore BitTorrent session asynchronously
Reduce the total startup time of the application and maintain sufficient responsiveness of the UI during startup due to the following:
1. Load resume data from disk asynchronously in separate thread;
2. Split handling of loaded resume data in chunks;
3. Reduce the number of emitting signals.

PR #16840.
2022-07-04 12:48:21 +03:00

85 lines
3.0 KiB
C++

/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2015-2022 Vladimir Golovnev <glassez@yandex.ru>
*
* 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 this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. 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), 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.
*/
#pragma once
#include <QtContainerFwd>
#include <QMutex>
#include <QObject>
#include <QVector>
#include "base/3rdparty/expected.hpp"
#include "base/path.h"
#include "infohash.h"
#include "loadtorrentparams.h"
namespace BitTorrent
{
using LoadResumeDataResult = nonstd::expected<LoadTorrentParams, QString>;
struct LoadedResumeData
{
TorrentID torrentID;
LoadResumeDataResult result;
};
class ResumeDataStorage : public QObject
{
Q_OBJECT
Q_DISABLE_COPY_MOVE(ResumeDataStorage)
public:
explicit ResumeDataStorage(const Path &path, QObject *parent = nullptr);
Path path() const;
virtual QVector<TorrentID> registeredTorrents() const = 0;
virtual LoadResumeDataResult load(const TorrentID &id) const = 0;
virtual void store(const TorrentID &id, const LoadTorrentParams &resumeData) const = 0;
virtual void remove(const TorrentID &id) const = 0;
virtual void storeQueue(const QVector<TorrentID> &queue) const = 0;
void loadAll() const;
QVector<LoadedResumeData> fetchLoadedResumeData() const;
signals:
void loadStarted(const QVector<BitTorrent::TorrentID> &torrents);
void loadFinished();
protected:
void onResumeDataLoaded(const TorrentID &torrentID, const LoadResumeDataResult &loadResumeDataResult) const;
private:
virtual void doLoadAll() const = 0;
const Path m_path;
mutable QVector<LoadedResumeData> m_loadedResumeData;
mutable QMutex m_loadedResumeDataMutex;
};
}