typedef struct _HEAP_LOOKASIDE
{
    SLIST_HEADER ListHead;
    unsigned short Depth;
    unsigned short MaximumDepth;
    unsigned long TotalAllocates;
    unsigned long AllocateMisses;
    unsigned long TotalFrees;
    unsigned long FreeMisses;
    unsigned long LastTotalAllocates;
    unsigned long LastAllocateMisses;
    unsigned long Counters[2];
} HEAP_LOOKASIDE, *PHEAP_LOOKASIDE;