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From: Per Sandberg <per.sandberg@bredband.net>
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Subject: Re: Stackusage at runtime
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NNTP-Posting-Date: Wed, 05 Nov 2008 17:00:15 UTC
Date: Wed, 05 Nov 2008 17:50:32 +0100
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Date: 2008-11-05T17:50:32+01:00
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Yes top secret because that the last place a lot people looks :)

Concerning APEX, once upon a time i the dark ages (80:ties & 90:ties) we 
was using apex as well for embedded systems.
What we did at that point in time was something along these lines:

* On program start fill the memory allocated for the stacks with 16#CACA#.
* After some time of execution query the operation system /Runtimes of 
the following, Stack start & Stack Size very very target dependent.
* Iterate from the free side of the allocated memory for each stack 
until no more "CACA" is found.
* Thats how we did it then.

And that is actually the the same basic method used in the more modern 
GCC/GNAT system to obtain the same result.

But if its possible to do static analysis with gnatstack that much better.

Concerning Ada and stacks as far as i know there is nothing defined in 
the language .

/Hope you will find a way in the dark labyrinth of memory:)
/Per


Andy wrote:
> On 4 Nov., 21:07, Per Sandberg <per.sandb...@bredband.net> wrote:
>> If you are running GNAT it is quite straight forward and described in
>> detail in the top secret document (The GNAT users guide chapter 22.
>> Stack Related Facilities)
> oops ... top secret? .... :-))
> 
> 
> We are using Apex ... Probably we think about adacores static analysis
> tool ...
> 
> I thought that ada itself has a possibility to report the memory-usage
> at a specific time
> 
> Thank you all for your help
> Andy