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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 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 --> */
#ifndef _D_DOWNLOAD_ENGINE_H_
#define _D_DOWNLOAD_ENGINE_H_
#include "common.h"
#include "a2netcompat.h"
#include "Command.h"
class SocketCore;
typedef SharedHandle<SocketCore> SocketHandle;
typedef deque<SocketHandle> Sockets;
class Logger;
class Option;
class NameResolver;
typedef SharedHandle<NameResolver> NameResolverHandle;
class RequestGroupMan;
typedef SharedHandle<RequestGroupMan> RequestGroupManHandle;
class FileAllocationMan;
typedef SharedHandle<FileAllocationMan> FileAllocationManHandle;
class StatCalc;
typedef SharedHandle<StatCalc> StatCalcHandle;
class CheckIntegrityMan;
typedef SharedHandle<CheckIntegrityMan> CheckIntegrityManHandle;
class SocketEntry {
public:
enum TYPE {
TYPE_RD,
TYPE_WR,
};
SocketHandle socket;
Command* command;
TYPE type;
public:
SocketEntry(const SocketHandle& socket,
Command* command,
TYPE type);
bool operator==(const SocketEntry& entry);
};
typedef deque<SocketEntry> SocketEntries;
#ifdef ENABLE_ASYNC_DNS
class NameResolverEntry {
public:
NameResolverHandle nameResolver;
Command* command;
public:
NameResolverEntry(const NameResolverHandle& nameResolver,
Command* command);
bool operator==(const NameResolverEntry& entry);
};
typedef deque<NameResolverEntry> NameResolverEntries;
#endif // ENABLE_ASYNC_DNS
class DownloadEngine {
private:
void waitData();
SocketEntries socketEntries;
#ifdef ENABLE_ASYNC_DNS
NameResolverEntries nameResolverEntries;
#endif // ENABLE_ASYNC_DNS
fd_set rfdset;
fd_set wfdset;
int32_t fdmax;
const Logger* logger;
StatCalcHandle _statCalc;
bool _haltRequested;
void shortSleep() const;
bool addSocket(const SocketEntry& socketEntry);
bool deleteSocket(const SocketEntry& socketEntry);
void executeCommand(Command::STATUS statusFilter);
/**
* Delegates to StatCalc
*/
void calculateStatistics();
void onEndOfRun();
void afterEachIteration();
public:
bool noWait;
Commands commands;
RequestGroupManHandle _requestGroupMan;
FileAllocationManHandle _fileAllocationMan;
CheckIntegrityManHandle _checkIntegrityMan;
const Option* option;
DownloadEngine();
virtual ~DownloadEngine();
void run();
void cleanQueue();
void updateFdSet();
bool addSocketForReadCheck(const SocketHandle& socket,
Command* command);
bool deleteSocketForReadCheck(const SocketHandle& socket,
Command* command);
bool addSocketForWriteCheck(const SocketHandle& socket,
Command* command);
bool deleteSocketForWriteCheck(const SocketHandle& socket,
Command* command);
#ifdef ENABLE_ASYNC_DNS
bool addNameResolverCheck(const NameResolverHandle& resolver,
Command* command);
bool deleteNameResolverCheck(const NameResolverHandle& resolver,
Command* command);
#endif // ENABLE_ASYNC_DNS
void addCommand(const Commands& commands);
void fillCommand();
void setStatCalc(const StatCalcHandle& statCalc);
bool isHaltRequested() const
{
return _haltRequested;
}
};
typedef SharedHandle<DownloadEngine> DownloadEngineHandle;
#endif // _D_DOWNLOAD_ENGINE_H_
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