Quoting Saptarshi Sen (2013-07-15 20:27:27) > Hi, > > Is it possible to use fixed array data structures for use through the > qmp-interface. > > My aim is to monitor IDE level activity in terms of sectors being > accessed. So > I plan to have a fixed size buffer. But I find no way of doing so when > I use the > qapi-schema.json. > I think the qmp -interface uses linked lists as a replacement for array > type structures. > > Can anybody clarify my doubt and whether is it possible to use arrays > as in my case.
Not currently, though there is a plan to support it, likely in 1.7. You can have your implementation map the buffer to a linked list type before sending a response though. It's not particularly efficient... but then again how big is this buffer gonna be? capacity/sector_size? If so I don't think that's realistic over QMP. A list of active sector numbers might actually work better. That could still be done more efficiently using arrays if we supported them currently, but in practice I don't think the extra overhead would be that much worse (though I'm assuming here that the number of sectors being concurrently accessed would be relatively small) > > Regards > Saptarshi Sen
