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From: Calum Grant (calum_at_[hidden])
Date: 2005-09-30 13:22:32

> The one killer limitation of shmem (that I'm pretty sure Ion
> is working hard to remove) is that the shared memory region
> cannot be grown once it has been created. This is where your
> memory-mapped "persist" library has a leg up.

Yes - Persist's approach is to manage a pool of memory blocks rather
than to allocate one huge one. So resizing isn't an issue. This
approach could of course be used with Shmem as well. In fact I think
many memory allocators allocate the heap in chunks rather than assume
it's contiguous.


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