[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Rep:Re: Re: [f-cpu] optional SRB
- To: <f-cpu@seul.org>
- Subject: Rep:Re: Re: [f-cpu] optional SRB
- From: "Nicolas Boulay" <nicolas.boulay@ifrance.com>
- Date: Mon, 25 Nov 2002 13:53:54 GMT
- Delivered-To: archiver@seul.org
- Delivered-To: f-cpu-outgoing@seul.org
- Delivered-To: f-cpu@seul.org
- Delivery-Date: Mon, 25 Nov 2002 08:54:09 -0500
- Reply-To: f-cpu@seul.org
- Send-By: 140.94.82.18 with Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt; FR 15/06/2000)
- Sender: owner-f-cpu@seul.org
When you're file didn't fill the memory what happen ? (256 MB of RAM,
500 Mo of file ?) ?
nicO
-----Message d'origine-----
De: "Christophe Avoinne" <christophe.avoinne@laposte.net>
A: <f-cpu@seul.org>
Date: 25/11/02
Objet: Re: Re: [f-cpu] optional SRB
Personnaly, I use mmap() a lot when I need to read or write a file with
complex structures. That way, I access the file as if it is a memory
thru
word or structure pointers. It is very convenient for a search algorithm
or
creating a structural file. You don't need to explicetely use lseek(),
read() or write() functions, just a msync() or a munmap() then a close()
at
the end. Not speaking about the share and access rights you can give at
this
memory.
----- Original Message -----
From: <whygee@club-internet.fr>
To: <f-cpu@seul.org>
Sent: Monday, November 25, 2002 2:53 PM
Subject: Re: Re: [f-cpu] optional SRB
>De: Michael Riepe
>
>On Mon, Nov 25, 2002 at 02:52:01AM +0100, Yann Guidon wrote:
>
>> PS : i recently attended a conference about GNU/Hurd and i have
>> seen some Hurd sourcec code. It's very far from POSIX but
>> one of the most crazy things i've seen is ... mmap() used for doing
>> a malloc() .....
>
>Huh? Linux (glibc) does that all the time (and has been doing it for
>many years), if the requested size is big enough.
O gawd ....
Then how do they manage the situations where there is a lot
of fragmentation, or when "garbage collection" must be done ?...
> Michael "Tired" Riepe
YG (back from Mars)
*************************************************************
To unsubscribe, send an e-mail to majordomo@seul.org with
unsubscribe f-cpu in the body. http://f-cpu.seul.org/
*************************************************************
To unsubscribe, send an e-mail to majordomo@seul.org with
unsubscribe f-cpu in the body. http://f-cpu.seul.org/
__________________________________________________
Modem offert : 150,92 euros remboursés sur le Pack eXtense de Wanadoo !
Haut débit à partir de 30 euros/mois : http://www.ifrance.com/_reloc/w
__________________________________________________
Modem offert : 150,92 euros remboursés sur le Pack eXtense de Wanadoo !
Haut débit à partir de 30 euros/mois : http://www.ifrance.com/_reloc/w
*************************************************************
To unsubscribe, send an e-mail to majordomo@seul.org with
unsubscribe f-cpu in the body. http://f-cpu.seul.org/