Adrian (a.delete@this.acm.org) on July 1, 2022 9:58 pm wrote:
> Foo_ (foo.delete@this.nomail.com) on July 1, 2022 3:21 am wrote:
> > Adrian (a.delete@this.acm.org) on June 30, 2022 9:43 am wrote:
> > >
> > > When all the allocation and free requests are done from stacks, each stack corresponding
> > > to a certain size class, nothing ever changes from the point of view of fragmentation.
> >
> > This is delusional. Allocation may be done "from stacks", but given that deallocations
> > happen in random order (random from the POV of the allocator, of course), they
> > cannot be done in a simple stack-like (i.e. LIFO) fashion.
>
>
> When the size is variable, you are right.
>
> But when the size of a memory block is fixed (being used to satisfy any allocation
> requests between 2 thresholds), the allocations and deallocations are really
> done as LIFO from the stack containing the free memory blocks.

You don't read what you reply to, do you?