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From: Marius Amado Alves <amado.alves@netcabo.pt>
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Subject: Re: Ada bench : count words
Date: Tue, 22 Mar 2005 13:28:21 +0000
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Date: 2005-03-22T13:28:21+00:00

> Replace End_Of_File with End_Error handling.

I tried. No speed gain.

>>        Get_Line (Buffer, N);
>
> Get_Line does one extra line scan. So it will be inherently slower. 
> Then it
> would not take any advantage of having Buffer if lines are shorter 
> than 4K.

I know, but how can you do it otherwise with Text_IO?

> BTW, you can safely declare Buffer either 1 or 1G bytes...

I know, but the benchmark specifies 4096.

> ... It should be raw "read".

It should, but Text_IO doesn't have it.

>>        Count_Words (Buffer (1 .. N));
>
> Wouldn't it count buffer ends as word separators for lines longer than 
> 4K?

No. Count_Words (S) does not call End_Word at the end of S. The state 
of In_Word passes unchanged to the next call of Count_Words (if not 
changed by End_Line). Only a separator or End_Line ends a word.