ULONG NTAPI KeQueryIntervalProfile ( IN KPROFILE_SOURCE ProfileSource )

Definition at line 219 of file profobj.c.

{
    HAL_PROFILE_SOURCE_INFORMATION ProfileSourceInformation;
    ULONG ReturnLength, Interval;
    NTSTATUS Status;

    /* Check what profile this is */
    if (ProfileSource == ProfileTime)
    {
        /* Return the time interval */
        Interval = KiProfileTimeInterval;
    }
    else if (ProfileSource == ProfileAlignmentFixup)
    {
        /* Return the alignment interval */
        Interval = KiProfileAlignmentFixupInterval;
    }
    else
    {
        /* Request it from HAL */
        ProfileSourceInformation.Source = ProfileSource;
        Status = HalQuerySystemInformation(HalProfileSourceInformation,
                                           sizeof(HAL_PROFILE_SOURCE_INFORMATION),
                                           &ProfileSourceInformation,
                                           &ReturnLength);

        /* Check if HAL handled it and supports this profile */
        if (NT_SUCCESS(Status) && (ProfileSourceInformation.Supported))
        {
            /* Get the interval */
            Interval = ProfileSourceInformation.Interval;
        }
        else
        {
            /* Unsupported or invalid source, fail */
            Interval = 0;
        }
    }

    /* Return the interval we got */
    return Interval;
}

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