Allocates s bytes of memory and returns it, or null if memory could not be allocated.
allocateFresh behaves just like allocate, the only difference being that this always
returns unused(fresh) memory. Although there may still be available space in the BitmappedBlock,
allocateFresh could still return null, because all the available blocks have been previously deallocated.
Allocates s bytes of memory and returns it, or null if memory could not be allocated. allocateFresh behaves just like allocate, the only difference being that this always returns unused(fresh) memory. Although there may still be available space in the BitmappedBlock, allocateFresh could still return null, because all the available blocks have been previously deallocated.