void InsertOrMerge(MemoryRegion prev, MemoryRegion r, MemoryRegion next)
{
Contract.Ensures(Brk == Contract.OldValue(Brk));
if (MemoryRegion.CanMerge(prev, r))
{
prev.Expand(r);
return;
}
InsertNode(prev, r);
TryMergeWithNext(r);
}
bool TryMergeWithNext(MemoryRegion r)
{
Contract.Ensures(Brk == Contract.OldValue(Brk));
var next = r.Next;
if (next != null && MemoryRegion.CanMerge(r, next))
{
RemoveNode(r, next);
r.Expand(next);
return(true);
}
else
{
return(false);
}
}
