RtIsPerformanceCore

RtIsPerformanceCore queries whether the specified core is a performance core.

Syntax

BOOL RtIsPerformanceCore(
    ULONG ProcessorNumber
);

Parameters

ProcessorNumber

The core number to query.

Return Value

If the function succeeds, and the specified core is a performance core, it returns TRUE. If the function fails (e.g., the ProcessorNumber value is out of system affinity mask), or the specified core is not a performance core, it returns FALSE. To get extended error information, call GetLastError. If the function fails, the last error returned is ERROR_INVALID_PARAMETER. You can use RtGetCurrentProcessorNumber to obtain the core number on which the calling thread is running.