[Devel] Re: [PATCH] Priority heap infrastructure enhancements

[Balbir Singh]

Paul Menage wrote:
> On Sat, Jun 21, 2008 at 1:05 AM, Balbir Singh <balbir at linux.vnet.ibm.com> wrote:
>> I would like to be able to drop the smallest value. Since we cannot drop the
>> smallest value, dropping a leaf (heap->size) should be sufficiently good enough.
>> I want a max heap and losing the root of the heap does not work for me.
>>
> 
> What are you actually trying to do? Can you get round this by just
> inverting your "gt" operator? i.e. provide one that actually
> implements "less-than"?

Paul,

That would convert the entire heap to a min-heap. With my soft limit patches,
that I am working on for the memory controller; I want the controller that has
exceeded it's soft limit by the maximum amount to be picked off the heap, so
that we can reclaim from it on memory contention.

Ideally, I would also like to be able to find an existing node in the heap, but
that is hard. I can work around that problem for now.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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