Re: Ada bench : count words

[Tapio Kelloniemi <spam17@thack.org>]

Marius Amado Alves <amado.alves@netcabo.pt> wrote:
>> Text_IO is pretty broken, from both a usability perspective and an
>> efficiency perspective.  I normally avoid it, and use pragma Import on
>> the C routines (open, read, etc).  Suitably wrapped in a clean
>> interface, of course.
>
>Bob, would you contribute an efficient Read procedure to this benchmark?

And to all other benchmarks which need read...

>The speed difference is greater than I thought. Ada (with Text_IO) is
>about 10 times slower than the C benchmark. I had forgotten to compile
>the C benchmark with -O3.

Why not use GNAT.OS_Lib. I think it does not add so much overhead, though
it is most likely still a bit slower than libc read.
But if that matters, why not use syscall (or is it denied).

Also adding pragma Inlines somewhere might give us some juicy nanoseconds
in case gcc does not inline everything automatically.

-- 
Tapio