Edit

CDROM_PERFORMANCE_EXCEPTION_TYPE enumeration (ntddcdrm.h)

  • Article

The CDROM_PERFORMANCE_EXCEPTION_TYPE enumeration defines the exceptional conditions for performance data. It is a member of the CDROM_PERFORMANCE_REQUEST structure, which is used as an input parameter to the IOCTL_CDROM_GET_PERFORMANCE I/O control request.

Syntax

typedef enum _CDROM_PERFORMANCE_EXCEPTION_TYPE {
  CdromNominalPerformance,
  CdromEntirePerformanceList,
  CdromPerformanceExceptionsOnly
} CDROM_PERFORMANCE_EXCEPTION_TYPE, *PCDROM_PERFORMANCE_EXCEPTION_TYPE;

Constants

 
CdromNominalPerformance
Requests nominal performance parameters.
CdromEntirePerformanceList
Requests the entire performance list, as qualified by the StartingLba field of the CDROM_PERFORMANCE_REQUEST structure.
CdromPerformanceExceptionsOnly
Requests only performance exceptions that cause the performance to fall outside the nominal.

Requirements

Requirement Value
Header ntddcdrm.h (include Ntddcdrm.h)

See also

CDROM_PERFORMANCE_REQUEST

IOCTL_CDROM_GET_PERFORMANCE