CACHE_RELATIONSHIP structure (winnt.h)

Describes cache attributes. This structure is used with the GetLogicalProcessorInformationEx function.

Syntax

typedef struct _CACHE_RELATIONSHIP {
  BYTE                 Level;
  BYTE                 Associativity;
  WORD                 LineSize;
  DWORD                CacheSize;
  PROCESSOR_CACHE_TYPE Type;
  BYTE                 Reserved[18];
  WORD                 GroupCount;
  union {
    GROUP_AFFINITY GroupMask;
    GROUP_AFFINITY GroupMasks[ANYSIZE_ARRAY];
  } DUMMYUNIONNAME;
} CACHE_RELATIONSHIP, *PCACHE_RELATIONSHIP;

Members

Level

The cache level. This member can be one of the following values.

Value Meaning
1
L1
2
L2
3
L3

Associativity

The cache associativity. If this member is CACHE_FULLY_ASSOCIATIVE (0xFF), the cache is fully associative.

LineSize

The cache line size, in bytes.

CacheSize

The cache size, in bytes.

Type

The cache type. This member is a PROCESSOR_CACHE_TYPE value.

Reserved

This member is reserved.

GroupCount

DUMMYUNIONNAME

DUMMYUNIONNAME.GroupMask

DUMMYUNIONNAME.GroupMasks

Requirements

   
Minimum supported client Windows 7 [desktop apps only]
Minimum supported server Windows Server 2008 R2 [desktop apps only]
Header winnt.h

See also

GROUP_AFFINITY

GetLogicalProcessorInformationEx

PROCESSOR_CACHE_TYPE

SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX