dtrace discuss - Dec 2008 - Is there a way to clear Dtrace arrays?

I am using trunc(@agg,0) to clear an aggregation every ''n''
seconds. Is there a similar function to clear an associative array? I know I can
deallocate memory for an individual element  by setting is to zero, but I am
looking for a way to clear ALL elements in an array.
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On Dec 8, 2008, at 8:43 AM, Henk Vandenbergh wrote:
> I am using trunc(@agg,0) to clear an aggregation every
''n'' seconds.
> Is there a similar function to clear an associative array? I know I  
> can deallocate memory for an individual element  by setting is to  
> zero, but I am looking for a way to clear ALL elements in an array.
There''s not. Can you explain what you''re doing a bit so we can
understand
the use case for such a function?

Adam

--
Adam Leventhal, Fishworks                        http://blogs.sun.com/ahl

I am gathering numerous file-level statistics that I want to report (printf)
every ''n'' seconds, and then start all over again with a new
set of statistics. I currently accumulate each ''field'' in
several aggregations, one aggregation per field. Every n seconds I dump out the
aggregations and then clear them using trunc(@xxx,0).
Instead of having one aggregation per field, I would think it would be more
efficient if I create a struct{} with all the fields, and then store that struct
in one associative array. However, I can''t clear an array.

Henk.
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This message posted from opensolaris.org

Ignore my request. Even if there was a way to clear an array, there is no
function that allows me to print out that array. Only an aggregation does that.
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This message posted from opensolaris.org

> Ignore my request. Even if there was a way to clear an array, there  
> is no function that allows me to print out that array. Only an  
> aggregation does that.
True, and I''d argue that an aggregation is probably the right data  
structure
for what you''re doing.

Adam

--
Adam Leventhal, Fishworks                        http://blogs.sun.com/ahl