Re: [clisp-list] parse-integer slowdown & make-string /= make-array of 'character

[Sam S. <sd...@gn...>]

> * In message <9F8...@G8...>
> * On the subject of "[clisp-list] parse-integer slowdown & make-string /= make-array of 'character"
> * Sent on Wed, 26 Feb 2003 16:05:10 +0100
> * Honorable "Hoehle, Joerg-Cyril" <Joe...@t-...> writes:
>
> It also appears that MAKE-STRING is very different from MAKE-ARRAY
> :element-type 'character. Using strings from MAKE-STRING is fast with
> PARSE-INTEGER, while strings from MAKE-ARRAY exhibit the tremendous slowdown.

On 2002-05-22 Bruno introduced mutable small strings.
This means that whenever you parse a string, you call
unpack_sstring_alloca(), which involves a copy_16bit_32bit() or
copy_8bit_32bit() call for a "small string" (8-bit or 16-bit).

It appears that we need to eliminate all calls to
unpack_sstring_alloca() and replace them with SstringDispatch(),
which does not carry the same overhead.

-- 
Sam Steingold (http://www.podval.org/~sds) running RedHat8 GNU/Linux
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