#define WALKHEAP() WalkHeap(0)
#define WALKHEAPTRACE() WalkHeap(1)
 * HeapRec - a list of all non-contiguous heap areas
const int maxHeaps = 32; /* 64 was overkill */
 * Use VirtualAlloc() for blocks bigger than nMaxHeapAllocSize since
const int nMaxHeapAllocSize = (1024*512);  /* don't allocate anything larger than this from the heap */
    int HeapAdd(void* ptr, size_t size
    BOOL bRet = (NULL != (m_hHeap = HeapCreate(HEAP_NO_SERIALIZE,
    ASSERT(HeapValidate(m_hHeap, HEAP_NO_SERIALIZE, NULL));
    BOOL bRet = HeapDestroy(m_hHeap);
        HeapFree(m_hHeap, HEAP_NO_SERIALIZE, m_heaps[index].base);
    ptr = HeapReAlloc(m_hHeap, HEAP_REALLOC_IN_PLACE_ONLY|HEAP_NO_SERIALIZE,
        HeapAdd(((char*)ptr) + m_heaps[m_nHeaps-1].len, size
    ptr = HeapAlloc(m_hHeap, HEAP_NO_SERIALIZE, size);
    if (HeapAdd(ptr, size)) {
    if (HeapAdd(ptr, size, bBigBlock)) {
    HeapAdd(ptr, size);
int VMem::HeapAdd(void* p, size_t size
void VMem::WalkHeap(int complete)
    MemoryUsageMessage("VMem heaps used %d. Total memory %08x\n", m_nHeaps, total, 0);
        ASSERT(HeapValidate(m_hHeap, HEAP_NO_SERIALIZE, ptr));