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/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* joris.guisson@gmail.com *
* *
* 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. *
***************************************************************************/
#ifndef NETSOCKETGROUP_H
#define NETSOCKETGROUP_H
#include <list>
#include <util/constants.h>
namespace net
{
using bt::Uint32;
class BufferedSocket;
/**
@author Joris Guisson <joris.guisson@gmail.com>
*/
class SocketGroup
{
Uint32 limit;
std::list<BufferedSocket*> sockets;
bt::TimeStamp prev_run_time;
Uint32 group_allowance;
public:
SocketGroup(Uint32 limit);
virtual ~SocketGroup();
/// Clear the lists of sockets
void clear() {sockets.clear();}
/// Add a socket for processing
void add(BufferedSocket* s) {sockets.push_back(s);}
/**
Process all the sockets in the vector for download.
@param global_allowance How much the group can do, this will be updated, 0 means no limit
@param now Current time
@return true if we can download more data, false otherwise
*/
bool download(Uint32 & global_allowance,bt::TimeStamp now);
/**
Process all the sockets in the vector for upload
@param global_allowance How much the group can do, this will be updated, 0 means no limit
@param now Current time
@return true if we can upload more data, false otherwise
*/
bool upload(Uint32 & global_allowance,bt::TimeStamp now);
/**
* Set the group limit in bytes per sec
* @param lim The limit
*/
void setLimit(Uint32 lim) {limit = lim;}
/// Get the number of sockets
Uint32 numSockets() const {return sockets.size();}
/**
* Calculate the allowance for this group
* @param now Current timestamp
*/
void calcAllowance(bt::TimeStamp now);
private:
void processUnlimited(bool up,bt::TimeStamp now);
bool processLimited(bool up,bt::TimeStamp now,Uint32 & allowance);
bool process(bool up,bt::TimeStamp now,Uint32 & global_allowance);
};
}
#endif
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