| Min version | Vista | 8 Pre RTM | 8 Pre RTM |
|---|---|---|---|
| Max version | 7 SP1 | 10 TH2 | |
| x86 offset offset:bitpos | Field Name | ||
| 0x0000 | struct _HEAP_SUBSEGMENT * Hint | struct _HEAP_LOCAL_DATA * volatile LocalData | struct _HEAP_LOCAL_DATA * LocalData |
| 0x0004 | struct _HEAP_SUBSEGMENT * ActiveSubsegment | struct _HEAP_SUBSEGMENT * volatile ActiveSubsegment | |
| 0x0008 | struct _HEAP_SUBSEGMENT * volatile[16] CachedItems | ||
| 0x0048 | union _SLIST_HEADER SListHeader | ||
| 0x0050 | union _HEAP_BUCKET_COUNTERS Counters | volatile union _HEAP_BUCKET_COUNTERS Counters | |
| 0x0058 | volatile struct _HEAP_LOCAL_DATA * LocalData | unsigned long LastOpSequence | |
| 0x005C | unsigned long LastOpSequence | uint16_t BucketIndex | |
| 0x005E | uint16_t LastUsed | ||
| 0x0060 | volatile uint16_t BucketIndex | uint16_t NoThrashCount | |
| 0x0062 | uint16_t LastUsed | ||