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From: =?UTF-8?Q?Markus_Sch=c3=b6pflin?= <no.spam@spam.spam>
Newsgroups: comp.lang.ada
Subject: Re: Profiling Ada binaries
Date: Mon, 25 Jul 2016 08:57:05 +0200
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Xref: news.eternal-september.org comp.lang.ada:31147
Date: 2016-07-25T08:57:05+02:00
List-Id: <comp.lang.ada>

Am 22.07.2016 um 16:59 schrieb Alejandro R. Mosteo:
> On 22/07/16 15:24, Markus Schöpflin wrote:
>> Dear list,
>>
>> (...)
>>
>> Flat profile:
>>
>> Each sample counts as 0.01 seconds.
>>   %   cumulative   self              self     total
>>  time   seconds   seconds    calls   s/call   s/call  name
>>   4.66      4.91     4.91      429     0.01     0.01  foo1
>>   4.41      9.55     4.64 162635540     0.00     0.00  bar___elabs
>>   3.99     13.76     4.21   515639     0.00     0.00  foo2
>>

[...]

> It's been a long time since I last used gprof, so with the caveat that I may
> be totally off the mark: perhaps you're reading the detail in reverse? That
> is, from the single elaboration call you're calling something than in turn
> calls the math functions.

Not likely, as the spec of bar just contains a bunch of array and record 
declarations and constants to initialize them with. Something along the lines of:

	type T is array(1..10)(1..10) of Float;
	T_Def : constant := (others => (others => 0.0));

But interestingly, when looking at the generated object code, the elaboration 
code of the spec of bar is adjacent to some helper functions used by those 
trigonometric functions. Looks like gprof somehow gets lost when translating 
back to symbolic names.

Markus