Windows — Как определить потребление процессора в C ++ на ядро

Как получить нагрузку на процессор на ядро ​​(четырехъядерный процессор с гиперпоточностью) в C ++?
Я ищу результат, как в диспетчере задач в%.

Я пытаюсь сделать это сейчас так:
Проблема в том, что код распознает 9 ядер (у меня 8: /)

#define _WIN32_DCOM
#include <iostream>
#include <comdef.h>
#include <Wbemidl.h>

# pragma comment(lib, "wbemuuid.lib")
using namespace std;
bool getCpuLoadInfo() {
HRESULT hres;

// Step 1: --------------------------------------------------
// Initialize COM. ------------------------------------------

hres = CoInitializeEx(0, COINIT_MULTITHREADED);
if (FAILED(hres)) {
cout << "Failed to initialize COM library. Error code = 0x" << hex << hres << endl;
return 0;                  // Program has failed.
}

// Step 2: --------------------------------------------------
// Set general COM security levels --------------------------
// Note: If you are using Windows 2000, you need to specify -
// the default authentication credentials for a user by using
// a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----
// parameter of CoInitializeSecurity ------------------------

hres = CoInitializeSecurity(
NULL,
-1,                          // COM authentication
NULL,                        // Authentication services
NULL,                        // Reserved
RPC_C_AUTHN_LEVEL_DEFAULT,   // Default authentication
RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation
NULL,                        // Authentication info
EOAC_NONE,                   // Additional capabilities
NULL                         // Reserved
);if (FAILED(hres)) {
cout << "Failed to initialize security. Error code = 0x"<< hex << hres << endl;
CoUninitialize();
return 0;                    // Program has failed.
}

// Step 3: ---------------------------------------------------
// Obtain the initial locator to WMI -------------------------

IWbemLocator *pLoc = NULL;

hres = CoCreateInstance(
CLSID_WbemLocator,
0,
CLSCTX_INPROC_SERVER,
IID_IWbemLocator, (LPVOID *)&pLoc);

if (FAILED(hres)) {
cout << "Failed to create IWbemLocator object."<< " Err code = 0x"<< hex << hres << endl;
CoUninitialize();
return 0;                 // Program has failed.
}

// Step 4: -----------------------------------------------------
// Connect to WMI through the IWbemLocator::ConnectServer method

IWbemServices *pSvc = NULL;

// Connect to the root\cimv2 namespace with
// the current user and obtain pointer pSvc
// to make IWbemServices calls.
hres = pLoc->ConnectServer(
_bstr_t(L"ROOT\\CIMV2"), // Object path of WMI namespace
NULL,                    // User name. NULL = current user
NULL,                    // User password. NULL = current
0,                       // Locale. NULL indicates current
NULL,                    // Security flags.
0,                       // Authority (e.g. Kerberos)
0,                       // Context object
&pSvc                    // pointer to IWbemServices proxy
);

if (FAILED(hres)) {
cout << "Could not connect. Error code = 0x" << hex << hres << endl;
pLoc->Release();
CoUninitialize();
return 0;                // Program has failed.
}

cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;// Step 5: --------------------------------------------------
// Set security levels on the proxy -------------------------

hres = CoSetProxyBlanket(
pSvc,                        // Indicates the proxy to set
RPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxx
RPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxx
NULL,                        // Server principal name
RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
NULL,                        // client identity
EOAC_NONE                    // proxy capabilities
);

if (FAILED(hres)) {
cout << "Could not set proxy blanket. Error code = 0x"<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 0;               // Program has failed.
}

// Step 6: --------------------------------------------------
// Use the IWbemServices pointer to make requests of WMI ----

// For example, get the name of the operating system
IEnumWbemClassObject* pEnumerator = NULL;
IWbemClassObject *pclsObj;
int i;
while (1) {
i = 1;
hres = pSvc->ExecQuery(
bstr_t("WQL"),
bstr_t("SELECT * FROM Win32_PerfFormattedData_PerfOS_Processor"),

WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator);

if (FAILED(hres)) {
cout << "Query for operating system name failed."<< " Error code = 0x"<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 0;               // Program has failed.
}

// Step 7: -------------------------------------------------
// Get the data from the query in step 6 -------------------ULONG uReturn = 0;

while (pEnumerator) {
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,
&pclsObj, &uReturn);

if (0 == uReturn) {
break;
}

VARIANT vtProp;

// Get the value of the Name property
//hr = pclsObj->Get(L"Name", 0, &vtProp, 0, 0);
hr = pclsObj->Get(L"PercentProcessorTime", 0, &vtProp, 0, 0);
wcout << " CPU Usage of CPU " << i << " : " << vtProp.bstrVal << endl;
VariantClear(&vtProp);

//IMPORTANT!!
pclsObj->Release();

i++;
}

}

// Cleanup
// ========

pSvc->Release();
pLoc->Release();
pEnumerator->Release();
pclsObj->Release();
CoUninitialize();

return 0;   // Program successfully completed.
}

Есть ли другой (возможно, более простой) способ получить загрузку процессора на ядро ​​в%?
Или я на правильном пути, но что-то не так с моим кодом?
Если так, что не так с этим? :П