[fpc-devel] TAVLTree(avl_tree.pp) thread safety : second proposition
Marco van de Voort
marcov at stack.nl
Fri Aug 8 09:23:14 CEST 2008
> Marco van de Voort wrote:
> >> Inoussa OUEDRAOGO wrote:
> >>> - TAVLManagedTree that uses a node mem manager provided in the constructor.
> >>> The developer using this one is _aware_ of the thread safety issue and can
> >>> then provide a thread safe node mem manager for an instance exposed
> >> What is exactly the add-on value for the node mem manager?
> > I can only think of heap fragmentation and reduction of creation overhead.
> Yes, but fpc's memory manager also already does this (at least if the
> allocation size is less than 512 bytes or so).
But fpc's memory manager won't be always used. There is cmem, and a future
sharemem as options too. And sharemem-likes are known to be slow.
The "memmanager might also do this" might be a reason to not enable it by
default, but not a reason to eliminate the possibility all together.
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