How to find number of physical core in a Windows system with c++ code

Question

I tried this but it will shows number of logical processors only

    SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
int numCPU = sysinfo.dwNumberOfProcessors;

https://msdn.microsoft.com/en-us/library/windows/desktop/ms683194(v=vs.85).aspx — David Heffernan, Aug 08 '17 at 17:13
These are all finds only number of logical processors. But I want Number of physical processor. anyone give code for c++ — Piraisudan M, Aug 09 '17 at 05:05
Is there any other simple methods apart from this?https://msdn.microsoft.com/en-us/library/windows/desktop/ms683194(v=vs.85).aspx — Piraisudan M, Aug 09 '17 at 07:04
Maybe. You might be able to do it through WMI. What's so hard about calling GLPI? — David Heffernan, Aug 09 '17 at 07:06

score 2 · Accepted Answer · answered Aug 08 '17 at 17:14

From https://msdn.microsoft.com/en-us/library/windows/desktop/ms724958(v=vs.85).aspx:

Note For information about the physical processors shared by logical processors, call GetLogicalProcessorInformationEx with the RelationshipType parameter set to RelationProcessorPackage (3).

You can get the related hardware of the logical processors, and infer how many physical processors are there

How to find number of physical core in a Windows system with c++ code

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