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Asked: 2026-05-11T18:38:48+00:00

Using unmanaged C++ on a Windows platform, is there a simple way to detect

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Using unmanaged C++ on a Windows platform, is there a simple way to detect the number of processor cores my host machine has?

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  1. Editorial Team

    You can use GetLogicalProcessorInformation to get the info you need.

    ETA:

    As mentioned in the question a commenter linked to, another (easier) way to do it would be via GetSystemInfo:

    SYSTEM_INFO sysinfo;
GetSystemInfo( &sysinfo );

numCPU = sysinfo.dwNumberOfProcessors;

    Seems like GetLogicalProcessorInformation would give you more detailed info, but if all you need is the number of processors, GetSystemInfo would probably work just fine.

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