H文件：rasSpdM.h
#ifndef __RASSPDMON_H_ #define __RASSPDMON_H_ void InitSpeedMonitor(void); void ClearSpeedMonitor(void); void GetRASSpeed(DWORD* pTPS,DWORD* pRPS,DWORD* pTT,DWORD* pRT); ////参数：每秒发送，每秒接收，总发送，总接受 #endif
CPP文件rasSpdM.cpp
#include "stdafx.h" #include "rasSpdM.h" #include #define TOTALBYTES 4096 #define BYTEINCREMENT 1024 LPSTR lpNameStrings=NULL; LPSTR *lpNamesArray=NULL; BOOL glo_fFromDynReg=TRUE; /* 在9x下通过dyn_data注册表得到速度 */ DWORD GetTotalRecv(void) { HKEY hKey; DWORD dwValue=(DWORD)-1; if(0==RegOpenKey(HKEY_DYN_DATA,"PerfStats\\StatData",&hKey)) { DWORD dwType,dwLen=sizeof(DWORD); RegQueryValueEx(hKey,"Dial-Up Adapter\\TotalBytesRecvd",NULL,&dwType,(BYTE*)&dwValue,&dwLen); RegCloseKey(hKey); } return dwValue; } DWORD GetTotalXmit(void) { HKEY hKey; DWORD dwValue=(DWORD)-1; if(0==RegOpenKey(HKEY_DYN_DATA,"PerfStats\\StatData",&hKey)) { DWORD dwType,dwLen=sizeof(DWORD); RegQueryValueEx(hKey,"Dial-Up Adapter\\TotalBytesXmit",NULL,&dwType,(BYTE*)&dwValue,&dwLen); RegCloseKey(hKey); } return dwValue; } DWORD GetPerSecondRecv(void) { HKEY hKey; DWORD dwValue=(DWORD)-1; if(0==RegOpenKey(HKEY_DYN_DATA,"PerfStats\\StatData",&hKey)) { DWORD dwType,dwLen=sizeof(DWORD); RegQueryValueEx(hKey,"Dial-Up Adapter\\BytesRecvd",NULL,&dwType,(BYTE*)&dwValue,&dwLen); RegCloseKey(hKey); } return dwValue; } DWORD GetPerSecondXmit(void) { HKEY hKey; DWORD dwValue=(DWORD)-1; if(0==RegOpenKey(HKEY_DYN_DATA,"PerfStats\\StatData",&hKey)) { DWORD dwType,dwLen=sizeof(DWORD); RegQueryValueEx(hKey,"Dial-Up Adapter\\BytesXmit",NULL,&dwType,(BYTE*)&dwValue,&dwLen); RegCloseKey(hKey); } return dwValue; } /***************************************************************** 在NT下通过per Data得到 *****************************************************************/ PPERF_OBJECT_TYPE FirstObject( PPERF_DATA_BLOCK PerfData ) { return( (PPERF_OBJECT_TYPE)((PBYTE)PerfData + PerfData->HeaderLength) ); } PPERF_OBJECT_TYPE NextObject( PPERF_OBJECT_TYPE PerfObj ) { return( (PPERF_OBJECT_TYPE)((PBYTE)PerfObj + PerfObj->TotalByteLength) ); } PPERF_INSTANCE_DEFINITION FirstInstance( PPERF_OBJECT_TYPE PerfObj ) { return( (PPERF_INSTANCE_DEFINITION)((PBYTE)PerfObj + PerfObj->DefinitionLength) ); } PPERF_INSTANCE_DEFINITION NextInstance( PPERF_INSTANCE_DEFINITION PerfInst ) { PPERF_COUNTER_BLOCK PerfCntrBlk; PerfCntrBlk = (PPERF_COUNTER_BLOCK)((PBYTE)PerfInst + PerfInst->ByteLength); return( (PPERF_INSTANCE_DEFINITION)((PBYTE)PerfCntrBlk + PerfCntrBlk->ByteLength) ); } PPERF_COUNTER_DEFINITION FirstCounter( PPERF_OBJECT_TYPE PerfObj ) { return( (PPERF_COUNTER_DEFINITION) ((PBYTE)PerfObj + PerfObj->HeaderLength) ); } PPERF_COUNTER_DEFINITION NextCounter( PPERF_COUNTER_DEFINITION PerfCntr ) { return( (PPERF_COUNTER_DEFINITION)((PBYTE)PerfCntr + PerfCntr->ByteLength) ); } /***************************************************************** * * * Load the counter and object names from the registry to the * * global variable lpNamesArray. * * * *****************************************************************/ void GetNameStrings( ) { HKEY hKeyPerflib; // handle to registry key HKEY hKeyPerflib009; // handle to registry key DWORD dwMaxValueLen; // maximum size of key values DWORD dwBuffer; // bytes to allocate for buffers DWORD dwBufferSize; // size of dwBuffer LPSTR lpCurrentString; // pointer for enumerating data strings DWORD dwCounter; // current counter index // Get the number of Counter items. RegOpenKeyEx( HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib", 0, KEY_READ, &hKeyPerflib); dwBufferSize = sizeof(dwBuffer); RegQueryValueEx( hKeyPerflib, "Last Counter", NULL, NULL, (LPBYTE) &dwBuffer, &dwBufferSize ); RegCloseKey( hKeyPerflib ); // Allocate memory for the names array. lpNamesArray = (char**)malloc( (dwBuffer+1) * sizeof(LPSTR) ); // Open key containing counter and object names. RegOpenKeyEx( HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib\\009", 0, KEY_READ, &hKeyPerflib009); // Get the size of the largest value in the key (Counter or Help). RegQueryInfoKey( hKeyPerflib009, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &dwMaxValueLen, NULL, NULL); // Allocate memory for the counter and object names. dwBuffer = dwMaxValueLen + 1; lpNameStrings = (char*)malloc( dwBuffer * sizeof(CHAR) ); // Read Counter value. RegQueryValueEx( hKeyPerflib009, "Counter", NULL, NULL, (BYTE*)lpNameStrings, &dwBuffer ); // Load names into an array, by index. int iC=1; for( lpCurrentString = lpNameStrings; *lpCurrentString; lpCurrentString += (lstrlen(lpCurrentString)+1) ) { dwCounter = atol( lpCurrentString ); lpCurrentString += (lstrlen(lpCurrentString)+1); //printf("%d length=%d data=%s\n",iC++,dwCounter,lpCurrentString); lpNamesArray[dwCounter] = (LPSTR) lpCurrentString; } } /***************************************************************** 得到下RAS速度 *****************************************************************/ void GetRASSpeedOn9X(DWORD* pTPS,DWORD* pRPS,DWORD* pTT,DWORD* pRT) {// under 9x *pTPS=GetPerSecondXmit(); *pRPS=GetPerSecondRecv(); *pTT=GetTotalXmit(); *pRT=GetTotalRecv(); } void GetRASSpeedOnNT(DWORD* pTPS,DWORD* pRPS,DWORD* pTT,DWORD* pRT) {// under NT ////参数：每秒发送，每秒接收，总发送，总接受 PPERF_DATA_BLOCK PerfData = NULL; PPERF_OBJECT_TYPE PerfObj; PPERF_INSTANCE_DEFINITION PerfInst; PPERF_COUNTER_DEFINITION PerfCntr, CurCntr; PPERF_COUNTER_BLOCK PtrToCntr; DWORD BufferSize = TOTALBYTES; DWORD i, j, k; // Get the name strings through the registry. //return; // Allocate the buffer for the performance data. PerfData = (PPERF_DATA_BLOCK) malloc( BufferSize ); while( RegQueryValueEx( HKEY_PERFORMANCE_DATA, "906",//"Global", NULL, NULL, (LPBYTE) PerfData, &BufferSize ) == ERROR_MORE_DATA ) { // Get a buffer that is big enough. BufferSize += BYTEINCREMENT; PerfData = (PPERF_DATA_BLOCK) realloc( PerfData, BufferSize ); } // Get the first object type. PerfObj = FirstObject( PerfData ); // Process all objects. //printf("object total=%d\n",PerfData->NumObjectTypes); //getchar(); for( i=0; i < PerfData->NumObjectTypes; i++ ) { // Display the object by index and name. // Get the first counter. PerfCntr = FirstCounter( PerfObj ); if( PerfObj->NumInstances > 0 ) { //exit(0); } else { // Get the counter block. PtrToCntr = (PPERF_COUNTER_BLOCK) ((PBYTE)PerfObj + PerfObj->DefinitionLength ); // Retrieve all counters. for( j=0; j < PerfObj->NumCounters; j++ ) { // Display the counter by index and name. if(strcmp("Bytes Transmitted/Sec",lpNamesArray[PerfCntr->CounterNameTitleIndex])==0) { *pTPS=*((DWORD*)((BYTE*)PtrToCntr+PerfCntr->CounterOffset)); } if(strcmp("Bytes Received/Sec",lpNamesArray[PerfCntr->CounterNameTitleIndex])==0) { *pRPS=*((DWORD*)((BYTE*)PtrToCntr+PerfCntr->CounterOffset)); } if(strcmp("Bytes Transmitted",lpNamesArray[PerfCntr->CounterNameTitleIndex])==0) { *pTT=*((DWORD*)((BYTE*)PtrToCntr+PerfCntr->CounterOffset)); } if(strcmp("Bytes Received",lpNamesArray[PerfCntr->CounterNameTitleIndex])==0) { *pRT=*((DWORD*)((BYTE*)PtrToCntr+PerfCntr->CounterOffset)); } // Get the next counter. PerfCntr = NextCounter( PerfCntr ); } } // Get the next object type. PerfObj = NextObject( PerfObj ); } } void GetRASSpeed(DWORD* pTPS,DWORD* pRPS,DWORD* pTT,DWORD* pRT) {////参数：每秒发送，每秒接收，总发送，总接受 if(glo_fFromDynReg==FALSE) { GetRASSpeedOnNT(pTPS,pRPS, pTT,pRT); } else { GetRASSpeedOn9X(pTPS,pRPS, pTT,pRT); } } void InitSpeedMonitor(void) { DWORD dwVersion = GetVersion(); // Get major and minor version numbers of Windows DWORD dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion))); DWORD dwWindowsMinorVersion = (DWORD)(HIBYTE(LOWORD(dwVersion))); // Get build numbers for Windows NT or Win32s if (dwVersion>>31 ==0) // Windows NT { glo_fFromDynReg=FALSE; GetNameStrings( ); } else // Windows 95 - 98 glo_fFromDynReg=TRUE; } void ClearSpeedMonitor(void) { if(lpNameStrings) free(lpNameStrings); if(lpNamesArray) free(lpNamesArray); }
使用方法：
#include "rasSpdM.h" BOOL CYourApp::InitInstance() { //初始化RAS速度访问 InitSpeedMonitor(); ... } #include "rasSpdM.h" void CYourWnd::OnTimer(UINT nIDEvent) { DWORD dwR,dwS,dwPSR,dwPSS;//总接收，总发送，每秒接收，每秒发送 GetRASSpeed(&dwPSS,&dwPSR,&dwS,&dwR);//pTPS,DWORD* pRPS,DWORD* pTT,DWORD* pRT) //参数：每秒发送，每秒接收，总发送，总接收 ... }
但我在使用过程中发现每秒发送，每秒接收这两个结果并不十分正确，所以我是采用总数相减的方式来计算每秒速度的。
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