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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. *
***************************************************************************/
#if 0
#include <math.h>
#include "cap.h"
namespace bt
{
typedef QValueList<Cap::Entry>::iterator CapItr;
Cap::Cap(bool percentage_check) : max_bytes_per_sec(0),leftover(0),current_speed(0),percentage_check(percentage_check)
{
timer.update();
}
Cap::~Cap()
{}
void Cap::setMaxSpeed(Uint32 max)
{
max_bytes_per_sec = max;
// tell everybody to go wild
if (max_bytes_per_sec == 0)
{
CapItr i = entries.begin();
while (i != entries.end())
{
Cap::Entry & e = *i;
e.obj->proceed(0);
i++;
}
entries.clear();
leftover = 0;
}
}
bool Cap::allow(Cappable* pd,Uint32 bytes)
{
if (max_bytes_per_sec == 0 || (percentage_check && (double)current_speed / (double)max_bytes_per_sec < 0.75))
{
timer.update();
return true;
}
// append pd to queue
entries.append(Cap::Entry(pd,bytes));
return false;
}
void Cap::killed(Cappable* pd)
{
CapItr i = entries.begin();
while (i != entries.end())
{
Cap::Entry & e = *i;
if (e.obj == pd)
i = entries.erase(i);
else
i++;
}
}
void Cap::update()
{
if (entries.count() == 0)
{
timer.update();
return;
}
// first calculate the time since the last update
double el = timer.getElapsedSinceUpdate();
// calculate the number of bytes we can send, including those leftover from the last time
Uint32 nb = (Uint32)round((el / 1000.0) * max_bytes_per_sec) + leftover;
leftover = 0;
// Out() << "nb = " << nb << endl;
while (entries.count() > 0 && nb > 0)
{
// get the first
Cap::Entry & e = entries.first();
if (e.num_bytes <= nb)
{
nb -= e.num_bytes;
// we can send all remaining bytes of the packet
e.obj->proceed(e.num_bytes);
entries.pop_front();
}
else
{
// sent nb bytes of the packets
e.obj->proceed(nb);
e.num_bytes -= nb;
nb = 0;
}
}
leftover = nb;
timer.update();
}
}
#endif
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