Min version	8.1 Update 1	8.1	10 Pre RTM	10 Pre RTM	10 Pre RTM		10 TH2
Max version		8.1 Update 1			10
Architecture	x86	x64	x64	x86	x86	x64	x86	x64
x86 offset offset:bitpos	Field Name								x64 offset offset:bitpos
0x0000	volatile unsigned long TotalReservedPages	volatile uint64_t TotalReservedPages		volatile unsigned long TotalReservedPages		volatile uint64_t TotalReservedPages	volatile unsigned long TotalReservedPages	volatile uint64_t TotalReservedPages	0x0000
0x0004	volatile unsigned long TotalCommittedPages	volatile uint64_t TotalCommittedPages		volatile unsigned long TotalCommittedPages		volatile uint64_t TotalCommittedPages	volatile unsigned long TotalCommittedPages	volatile uint64_t TotalCommittedPages	0x0008
0x0008	unsigned long Signature								0x0010
0x000C	unsigned long GlobalFlags								0x0014
0x0010	uint16_t ProcessHeapListIndex		uintptr_t FreeCommittedPages						0x0018
0x0014	uintptr_t FreeCommittedPages	uintptr_t FreeCommittedPages	unsigned long Interceptor						0x0020
0x0018			uint16_t ProcessHeapListIndex		uint16_t ProcessHeapListIndex	uint16_t ProcessHeapListIndex	uint16_t ProcessHeapListIndex	uint16_t ProcessHeapListIndex	0x0024
0x0018	struct _RTL_SRWLOCK LargeMetadataLock	struct _RTL_SRWLOCK LargeMetadataLock	unsigned long GlobalLockOwner	uint16_t ProcessHeapListIndex					0x0028
0x001A			uint16_t GlobalLockCount						0x0026
0x001C				unsigned long GlobalLockOwner		unsigned long GlobalLockOwner	unsigned long GlobalLockOwner	unsigned long GlobalLockOwner	0x0028
0x001C	struct _RTL_RB_TREE LargeAllocMetadata	struct _RTL_RB_TREE LargeAllocMetadata							0x0030
0x0020			struct _RTL_SRWLOCK LargeMetadataLock						0x0030
0x0024			struct _RTL_RB_TREE LargeAllocMetadata	struct _RTL_RB_TREE LargeAllocMetadata		struct _RTL_RB_TREE LargeAllocMetadata	struct _RTL_RB_TREE LargeAllocMetadata	struct _RTL_RB_TREE LargeAllocMetadata	0x0038
0x0024	volatile unsigned long LargeReservedPages	volatile uint64_t LargeReservedPages							0x0040
0x0028	volatile unsigned long LargeCommittedPages	volatile uint64_t LargeCommittedPages	volatile uint64_t LargeReservedPages						0x0048
0x002C					volatile unsigned long LargeReservedPages	volatile uint64_t LargeReservedPages	volatile unsigned long LargeReservedPages	volatile uint64_t LargeReservedPages	0x0048
0x002C	struct _HEAP_LOCK SegmentAllocatorLock		volatile uint64_t LargeCommittedPages	volatile unsigned long LargeReservedPages					0x0050
0x0030				volatile unsigned long LargeCommittedPages		volatile uint64_t LargeCommittedPages	volatile unsigned long LargeCommittedPages	volatile uint64_t LargeCommittedPages	0x0050
0x0034			struct _HEAP_LOCK SegmentAllocatorLock		struct _RTL_SRWLOCK SegmentAllocatorLock				0x0058
0x0038					struct _LIST_ENTRY SegmentListHead				0x0060
0x0040					uintptr_t SegmentCount				0x0070
0x0044	struct _LIST_ENTRY SegmentListHead	struct _LIST_ENTRY SegmentListHead			struct _RTL_RB_TREE FreePageRanges	struct _RTL_RB_TREE FreePageRanges	struct _RTL_RB_TREE FreePageRanges	struct _RTL_RB_TREE FreePageRanges	0x0078
			struct _LIST_ENTRY SegmentListHead						0x0080
0x004C	uintptr_t SegmentCount			struct _LIST_ENTRY SegmentListHead	uintptr_t VirtualizationKey		struct _RTL_SRWLOCK ContextExtendLock		0x0088
0x0050	struct _RTL_RB_TREE FreePageRanges		uint64_t SegmentCount		struct _RTL_SRWLOCK ContextExtendLock		uint8_t * AllocatedBase		0x0090
0x0054			struct _RTL_RB_TREE FreePageRanges	unsigned long SegmentCount	uint8_t * AllocatedBase		uint8_t * UncommittedBase		0x0098
0x0058	void * NextLocalInfoAddress			struct _RTL_RB_TREE FreePageRanges	uint8_t * UncommittedBase		uint8_t * ReservedLimit		0x00A0
0x005C	void * NextUncommitedAddress		struct _RTL_SRWLOCK ContextExtendLock		uint8_t * ReservedLimit		struct _HEAP_VS_CONTEXT VsContext	struct _HEAP_VS_CONTEXT VsContext	0x00A8
0x0060	void * ReservedLimit		uint8_t * AllocatedBase	struct _RTL_SRWLOCK ContextExtendLock	struct _HEAP_VS_CONTEXT VsContext	struct _HEAP_VS_CONTEXT VsContext			0x00B0
0x0064	struct _HEAP_LFH_CONTEXT LfhContext	struct _HEAP_LFH_CONTEXT LfhContext	uint8_t * UncommittedBase	uint8_t * AllocatedBase					0x00B8
0x0068				uint8_t * UncommittedBase
0x006C				uint8_t * ReservedLimit
0x0070				struct _HEAP_VS_CONTEXT VsContext
			uint8_t * ReservedLimit						0x00C0
			struct _HEAP_VS_CONTEXT VsContext						0x00C8
0x0090							struct _HEAP_LFH_CONTEXT LfhContext		0x0110
0x0098					struct _HEAP_LFH_CONTEXT LfhContext				0x0120
0x00A8				struct _HEAP_LFH_CONTEXT LfhContext