Re: having probs with files > 2G

["William N. Zanatta" <william@veritel.com.br>]

Thomas Ackermann wrote:
> hi!
> i hope i'm not off topic with this, but, i'having problems with some 
> split-like program i'm writing at the moment.
> 
> when opening files > 2GB the program freezes when data is read from the 
> file the first time.
> had it already working before with a buffer size of (char)1 before but 
> that went really slow..
> 
> source code is attached, please help..
> 
> thx, thomas
> 
> 

You should use
   unsigned long long int var;

and

   the %llu modifier in your printf's and stuffs like that...

This illustrates your problem...
------------------------[ cut here ]---------------------------
#include <stdio.h>

int main() {


   unsigned long long int x = 0;
   unsigned int y = 0;
   x--;
   y--;

   printf("New Limit:    [%llu]\nActual Limit: [%u]\n", x,y/2);

   return(0);
}
------------------------[ cut here ]---------------------------

Of course you MUST NOT rely only in the %ull limit as you also have a 
limit in the filesystem but if you know how to deal with it, you will 
get everything working fine. =]

William

-- 
Perl combines all of the worst aspects of BASIC, C and line noise.
                 -- Keith Packard