On 16 May 2013 23:51, Matt Ettus wrote: 

> There is no need to
create multiple copies. The consuming blocks are each given a pointer to
the same data, and the memory is not freed until all the consuming
blocks indicate they are done with it. 
> 
> Matt

Also, the "contract"
that work functions have with the scheduler is that they don't write
into the input buffer. 

 
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