public static UInt32 GetFreeMem(HeapBlock* aBlock)
{
return aBlock->size - (aBlock->used * aBlock->bsize);
}
public static UInt32 GetUsedMem(HeapBlock* aBlock)
{
return (aBlock->used * aBlock->bsize);
}
public static int InitBlock(HeapBlock* b, UInt32 size, UInt32 bsize)
{
UInt32 bcnt;
b->size = size - (UInt32)sizeof(HeapBlock);
b->bsize = bsize;
bcnt = size / bsize;
byte* bm = (byte*)&b[1];
/* clear bitmap */
for (uint x = 0; x < bcnt; ++x)
{
bm[x] = 0;
}
/* reserve room for bitmap */
bcnt = (bcnt / bsize) * bsize < bcnt ? bcnt / bsize + 1 : bcnt / bsize;
for (uint x = 0; x < bcnt; ++x)
{
bm[x] = 5;
}
b->lfb = bcnt - 1;
b->used = bcnt;
b->next = null;
return 1;
}
public static int AddBlock(HeapBlock* b)
{
EnterCritical("AddBlock");
b->next = fblock;
fblock = b;
ExitCritical();
return 1;
}
public static void Load(HeapBlock* heapPtr, SpinLock heapLock)
{
fblock = heapPtr;
AccessLock = heapLock;
AccessLockInitialised = (AccessLock != null);
}
