P2P编程

开发平台：
Windows_Unix

stats.cpp：源码内容
							// ------------------------------------------------
// File : stats.cpp
// Date: 4-apr-2002
// Author: giles
// Desc: 
//		Statistic logging
//		
// (c) 2002 peercast.org
// ------------------------------------------------
// 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.
// ------------------------------------------------
#include "stats.h"
#include "common.h"
#include "sys.h"
#include "stream.h"
Stats stats;
// ------------------------------------
void Stats::clear()
{
	for(int i=0; i<Stats::MAX; i++)
	{
		current[i] = 0;
		last[i] = 0;
		perSec[i] = 0;
	}
	lastUpdate = 0;
}
// ------------------------------------
void	Stats::update()
{
	unsigned int ctime = sys->getTime();
	unsigned int diff = ctime - lastUpdate;
	if (diff >= 5)
	{
		
		for(int i=0; i<Stats::MAX; i++)
		{
			perSec[i] = (current[i]-last[i])/diff;
			last[i] = current[i];
		}
		lastUpdate = ctime;
	}
	
}
// ------------------------------------
bool Stats::writeVariable(Stream &out,const String &var)
{
	char buf[1024];
	if (var == "totalInPerSec")		
		sprintf(buf,"%.1f",BYTES_TO_KBPS(getPerSecond(Stats::BYTESIN)));
	else if (var == "totalOutPerSec")		
		sprintf(buf,"%.1f",BYTES_TO_KBPS(getPerSecond(Stats::BYTESOUT)));
	else if (var == "totalPerSec")		
		sprintf(buf,"%.1f",BYTES_TO_KBPS(getPerSecond(Stats::BYTESIN)+getPerSecond(Stats::BYTESOUT)));
	else if (var == "wanInPerSec")		
		sprintf(buf,"%.1f",BYTES_TO_KBPS(getPerSecond(Stats::BYTESIN)-getPerSecond(Stats::LOCALBYTESIN)));
	else if (var == "wanOutPerSec")		
		sprintf(buf,"%.1f",BYTES_TO_KBPS(getPerSecond(Stats::BYTESOUT)-getPerSecond(Stats::LOCALBYTESOUT)));
	else if (var == "wanTotalPerSec")		
		sprintf(buf,"%.1f",BYTES_TO_KBPS((getPerSecond(Stats::BYTESIN)-getPerSecond(Stats::LOCALBYTESIN))+(getPerSecond(Stats::BYTESOUT)-getPerSecond(Stats::LOCALBYTESOUT))));
	else if (var == "netInPerSec")		
		sprintf(buf,"%.1f",BYTES_TO_KBPS(getPerSecond(Stats::PACKETDATAIN)));
	else if (var == "netOutPerSec")		
		sprintf(buf,"%.1f",BYTES_TO_KBPS(getPerSecond(Stats::PACKETDATAOUT)));
	else if (var == "netTotalPerSec")		
		sprintf(buf,"%.1f",BYTES_TO_KBPS(getPerSecond(Stats::PACKETDATAOUT)+getPerSecond(Stats::PACKETDATAIN)));
	else if (var == "packInPerSec")		
		sprintf(buf,"%.1f",getPerSecond(Stats::NUMPACKETSIN));
	else if (var == "packOutPerSec")		
		sprintf(buf,"%.1f",getPerSecond(Stats::NUMPACKETSOUT));
	else if (var == "packTotalPerSec")		
		sprintf(buf,"%.1f",getPerSecond(Stats::NUMPACKETSOUT)+getPerSecond(Stats::NUMPACKETSIN));
	else
		return false;
	out.writeString(buf);
	return true;
}

						