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Asynchronous reading
| Asynchronous reading [message #45860] |
Mon, 10 October 2005 16:19 |
Robert Barnett
Messages: 70
Registered: May 2004
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I'm currently implementing a visualisation tool in IDL and would really
like to implement asynchronous data transfer. Asynchronous data
transfer allows me to perform I/O and processing operations without
having to wait to read the whole dataset into memory.
For example. I can implement something similar to asynchronous behavior
to render a DICOM image. However, I would have to use the assoc
function
to access chunks of pixel data directly and then add those chunks as
tiles of an IDLgrImage.
Whilst I don't have immediate performance issues which
require such an implementation, I don't want to stumble across
this kind of problem midway through development. I am certainly
troubled that there is no easy way to implement asynchronous behaviour
in IDL. Who knows? Maybe the IDL complier already does it behind the
scenes without me even knowing.
If there is no obvious anwser to this question, then I might submit a
feature request to include some kind of asynchronous optimisation
implemented by the IDL compiler. I certainly think that using advanced
OO programming interfaces such as the ITK and VTK imaging toolkits are
probably not the answer here.
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