Windows下如何用C/C++获取cpu数量和物理核数

Question

麻烦各位，问下Windows下如何用C/C++获取CPU的数量和各自的物理核数？

试过打开注册表HARDWARE\DESCRIPTION\System\CentralProcessor，里面只有逻辑核数的信息。

Answer 1

#include "windows.h"
SYSTEM_INFO sysInfo;
GetSystemInfo( &sysInfo );
printf("now system cpu num is %d\n", sysInfo.dwNumberOfProcessors);