TransferCalculator.cpp
资源名称:p2p_vod.rar [点击查看]
上传用户:liguizhu
上传日期:2015-11-01
资源大小:2422k
文件大小:3k
源码类别:
P2P编程
开发平台:
Visual C++
- /*
- * Openmysee
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
- // TransferCalculator.cpp: implementation of the TransferCalculator class.
- //
- //////////////////////////////////////////////////////////////////////
- #include "stdafx.h"
- #include "TransferCalculator.h"
- //////////////////////////////////////////////////////////////////////
- // Construction/Destruction
- //////////////////////////////////////////////////////////////////////
- TransferCalculator::TransferCalculator() {
- ClearTransferInfo();
- }
- TransferCalculator::~TransferCalculator() {
- }
- void TransferCalculator::GetTransferInfo(TransferInfo& ti) {
- ti.avgDownSpeed = avgDownSpeed;
- ti.avgUpSpeed = avgUpSpeed;
- ti.currDownSpeed = currDownSpeed;
- ti.currUpSpeed = currUpSpeed;
- ti.totalDownBytes = totalDownBytes;
- ti.totalUpBytes = totalUpBytes;
- }
- void TransferCalculator::ClearTransferInfo() {
- totalstartTime = tmpStartTime = timeGetTime();
- tmpOldDownBytes = tmpOldUpBytes = 0;
- totalDownBytes = totalUpBytes = 0;
- currDownSpeed = currUpSpeed = avgDownSpeed = avgUpSpeed = 0;
- }
- void TransferCalculator::GenerateTransferInfo(BOOL calAvg) {
- DWORD tNow = timeGetTime();
- /**********每三秒钟计算一次最近的下载/上传速度**********/
- if(tNow - tmpStartTime > 3000) {
- DWORD tmpTime = tNow - tmpStartTime;
- DWORD tmpBytes = (DWORD)(totalDownBytes - tmpOldDownBytes);
- if(tmpBytes <= 0 || tmpTime <= 0)
- currDownSpeed = 0;
- else
- currDownSpeed = ((float)tmpBytes*1024/tmpTime);
- tmpBytes = (DWORD)(totalUpBytes - tmpOldUpBytes);
- if(tmpBytes <= 0 || tmpTime <= 0)
- currUpSpeed = 0;
- else
- currUpSpeed = ((float)tmpBytes*1024/tmpTime);
- tmpStartTime = timeGetTime();
- tmpOldDownBytes = totalDownBytes;
- tmpOldUpBytes = totalUpBytes;
- }
- /**********有必要时计算一次总共的平均下载/上传速度**********/
- if(calAvg) {
- DWORD usedTime = (tNow - totalstartTime)/1000;
- if(usedTime) {
- avgDownSpeed = ((float)totalDownBytes/usedTime);
- avgUpSpeed = ((float)totalUpBytes/usedTime);
- }
- }
- }