Can Perl (without XS) write to a specific machine address?


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Can Perl (without XS) write to a specific machine address?

by Anonymous Monk

on Dec 19, 2005 at 17:13 UTC ( [id://517807]=note: print w/replies, xml )

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in reply to What Perl CAN'T do?

If I have a bit of memory mapped hardware, how do I get Perl to access that hardware, without resorting to XS, or otherwise stepping outside the language features described iin the perlfunc and perlop man pages?

I can't think of a way -- even a bad one. Is there one?

Ytrew

Comment on Can Perl (without XS) write to a specific machine address?

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Re: Can Perl (without XS) write to a specific machine address?
by Celada (Monk) on Dec 19, 2005 at 21:46 UTC

The question is not fair.

In any language, unless you are programming in the kernel, you will require the mmap system call in order to access memory mapped hardware. By restricting to what's described in the perlfunc and perlop manpage, you are forbidding use of mmap.

So notwithstanding your restriction, it's actually just as easy to do in Perl as in C: In C, use mmap(), in Perl use Sys::Mmap.

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