在Windows中,获取指定进程的网络接收(RX)和发送(TX)数据量并不是直接可用的API,但可以通过几种方法间接实现。常见的方法包括使用 Windows Performance Counters 或利用 WMI(Windows Management Instrumentation)。以下是一些示例:
方法 1: 使用性能计数器
你可以使用 Performance Data Helper (PDH)
API 来获取网络统计信息。
#include <windows.h>
#include <pdh.h>
#include <pdhmsg.h>
#include <iostream>
void GetNetworkStats(const std::wstring& processName) {
// Prepare for performance data.
HQUERY hQuery;
HCOUNTER hCounterIn, hCounterOut;
// Create a query to gather performance data.
PdhOpenQuery(nullptr, 0, &hQuery);
// Define the counters for bytes received and sent.
std::wstring counterPathIn = L"\\Process(" + processName + L")\\IO Read Bytes/sec";
std::wstring counterPathOut = L"\\Process(" + processName + L")\\IO Write Bytes/sec";
// Add the counters to the query.
PdhAddCounter(hQuery, counterPathIn.c_str(), 0, &hCounterIn);
PdhAddCounter(hQuery, counterPathOut.c_str(), 0, &hCounterOut);
// Collect initial values.
PdhCollectQueryData(hQuery);
Sleep(1000); // Wait for a second before collecting again.
// Collect the new values.
PdhCollectQueryData(hQuery);
PDH_FMT_COUNTERVALUE counterValIn;
PDH_FMT_COUNTERVALUE counterValOut;
// Get formatted values for RX and TX bytes
PdhGetFormattedCounterValue(hCounterIn, PDH_FMT_LARGE | PDH_FMT_NOSCALE, nullptr, &counterValIn);
PdhGetFormattedCounterValue(hCounterOut, PDH_FMT_LARGE | PDH_FMT_NOSCALE, nullptr, &counterValOut);
std::wcout << L"Bytes Received: " << counterValIn.largeValue << L"\n";
std::wcout << L"Bytes Sent: " << counterValOut.largeValue << L"\n";
// Clean up
PdhCloseQuery(hQuery);
}
int main() {
std::wstring processName = L"your_process_name"; // replace with your target process name
GetNetworkStats(processName);
return 0;
}
方法 2: 使用 WMI
WMI提供了一种更简单的方法来查询系统状态,包括进程的网络使用情况。
#include <windows.h>
#include <comdef.h>
#include <iostream>
#pragma comment(lib, "wbemuuid.lib")
void GetProcessNetworkUsage(const wchar_t* processName) {
HRESULT hres;
// Initialize COM.
hres = CoInitializeEx(0, COINIT_MULTITHREADED);
if (FAILED(hres)) {
std::cerr << "Failed to initialize COM library." << std::endl;
return;
}
hres = CoInitializeSecurity(
NULL,
-1,
NULL,
NULL,
RPC_C_AUTHN_LEVEL_DEFAULT,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
EOAC_NONE,
NULL);
IWbemLocator *pLoc = NULL;
hres = CoCreateInstance(
CLSID_WbemLocator,
0,
CLSCTX_INPROC_SERVER,
IID_IWbemLocator,(LPVOID *)&pLoc);
IWbemServices *pSvc = NULL;
hres = pLoc->ConnectServer(
_bstr_t(L"ROOT\\CIMV2"),
NULL,
NULL,
0,
NULL,
0,
0,
&pSvc);
if (FAILED(hres)) {
std::cerr << "Could not connect. Error code = 0x"
<< std::hex << hres << std::endl;
pLoc->Release();
CoUninitialize();
return;
}
// Set security levels on the proxy
hres = CoInitializeSecurity(
NULL,
-1,
NULL,
NULL,
RPC_C_AUTHN_LEVEL_DEFAULT,
RPC_C_IMP_LEVEL_IMPERSONATE ,
NULL ,
EOAC_NONE ,
NULL );
IEnumWbemClassObject* pEnumerator = NULL;
HRESULT hr;
WCHAR query[256];
swprintf(query, sizeof(query)/sizeof(WCHAR),
L"SELECT * FROM Win32_PerfRawData_Tcpip_NetworkInterface WHERE Name='%s'",
processName);
hr= pSvc->ExecWBEM(&query[0], WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY ,NULL,NULL,&pEnumerator );
IWbemClassObject *pclsObj;
ULONG uReturn=0;
while (pEnumerator) {
HRESULT hr= pEnumerator->Next(WBEM_INFINITE ,1,&pclsObj,&uReturn );
if (uReturn==0) break;
VARIANT vtProp;
VariantInit(&vtProp);
hr= pclsObj->Get(L"InOctets",&vtProp);
wprintf(L"InOctets : %d\n", vtProp.ulVal);
VariantClear(&vtProp);
hr= pclsObj->Get(L"OutOctets",&vtProp);
wprintf(L"OutOctets : %d\n", vtProp.ulVal);
VariantClear(&vtProp);
pclsObj->Release();
}
// Cleanup
pSvc->Release();
pLoc->Release();
CoUninitialize();
}
int main() {
const wchar_t* processName = L"Ethernet"; // Replace with your network interface name or relevant identifier
GetProcessNetworkUsage(processName);
return 0;
}
注意事项:
- 在调用这些 API 时,你可能需要以管理员权限运行程序。
- 网络接口名称可能会有所不同,因此确保您为正在监视的特定进程或接口提供正确的名称。
- 使用 WMI 的方法涉及 COM 和异步操作,所以需要进行额外处理。
- 上述代码仅作为基本框架,可以根据具体需求进一步修改和完善。
希望这对你有帮助!如果还有其他问题,请告诉我。
内容由零声教学AI助手提供,问题来源于学员提问