system info & cpu core id & thread active

//1. get core id
unsigned char get_real_core_id()
{
#ifdef _WIN64 
 int temp[4] = {0x0};
 __cpuid(temp, 1);
 return (unsigned char)((temp[1]>>24)&0xff);
#else
 unsigned int ebx_value = 0;
 __asm
 {
  mov eax, 1
  cpuid
  mov ebx_value, ebx
 }
 return (unsigned char)((ebx_value >> 24)&0xff);
#endif
}

//2. get cpu core number
SYSTEM_INFO si;
GetSystemInfo(&si);
int core_num = si.dwNumberOfProcessors;
 
//3. thread affinity mask
for(int i = 0; i < core_num; ++i)
{
   // HANDLE * _handle = new HANDLE[core_num];
    _handle[i] = _beginthreadex(...);
    SetThreadAffinityMask(_handle[i],0x0001 << i); // set thread run on the special core id
}
 
//4. the program is on the bitbucket(Harvey123)