Are zero size segment allowed?

[kraftwerk1611]

Hi,

If function alloc() is looking for available memory segment of length (size+2)=7 and it finds a memory block that has size=9 in its segment header, what should it do?

Taking out length 7 memory segment from this segment[size=9] will take all available available data part leaving only 2 segment header elements with zero data element.

Is this ok?

Thanks.

[cadet1620]

kraftwerk1611 wrote

Taking out length 7 memory segment from this segment[size=9] will take all available available data part leaving only 2 segment header elements with zero data element.

This should be OK if it doesn't cause problems with your free list searching.  Requests for zero-length heap are rare—they only happen when a Jack object with no data members is constructed.

In might be better to treat this the same as finding a size=8 block; just return the entire block.

--Mark