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Full Discussion: Is there a system call other than 'open' for opening very large files?
Top Forums Programming Is there a system call other than 'open' for opening very large files? Post 302344478 by achenle on Sunday 16th of August 2009 09:18:49 PM
Old 08-16-2009
The only thing I'd add at this point is the if you start developing a 64-bit application is to be real careful with your pointers, offsets, and sizes. If you've been programming for any time in strictly 32-bit apps, you've probably developed habits that cause you to at least implicitly treat those as 32-bit values, if you don't do it explicitly already.

I'm not sure offhand what GCC options would help ("-Wall", maybe?), but I doknow later versions of Sun's Studio C++ compiler support options such as "-xport64" and "+w2" that will cause the compiler to emit warnings for things like 64-to-32-bit truncations and code that depends on sign extension rules. Those warning options were put in to help porting code to 64-bit environments.

FWIW, I always like all my code to be completely clean of even the slightest warning - at the highest warning level whatever compiler I'm using supports. I figure that if the people who wrote the compiler that I'm using to convert my code into a binary think what I'm trying to do is a bad enough idea to take the time to warn me about it, it's probably something I shouldn't be doing.
 

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LEARN ABOUT DEBIAN

rig

RIG(6)								   Games Manual 							    RIG(6)

NAME

       RIG - Random Identity Generator

USAGE

       rig [ -f | -m ] [ -d datadir ] [ -c num ]

DESCRIPTION

       Rig is a utility that will piece together a random first name, last name, street number and address, along with a geographically consistant
       (ie, they all match the same area) city, state, ZIP code, and area code.

       It is suitable for such applications as feeding the NY times registration page to fend off junk (snail) mail and telemarketers, or for reg-
       istering on BBS's to which you don't wish to reveal your real information.

OPTIONS

       -f, -m Respectively, use female and male names. If neither or both options are selected, RIG uses both female and male names.

       -d datadir
	      Use data files found in datadir. Without this option, the default directory of /usr/share/rig is assumed.

       -c num Output num identities. Default is 1.

FILES

       /usr/share/rig/locdata.idx
       /usr/share/rig/street.idx
       /usr/share/rig/fnames.idx
       /usr/share/rig/mnames.idx
       /usr/share/rig/lnames.idx

HISTORY

       Based on "fake" written for MS-DOS. Unfortunately the author and publish date are unknown.

       First UNIX version written from scratch in 1999.

       This manpage based on RIG version 1.10.

AUTHORS

       UNIX  version  (c)  1999-2002 Ian Turner with contributions from Ian Prowell, Nick Rusnov, and Schneelocke.  Geography Database is from the
       original  version  and  I  believe  it  to  be  held   in   the	 public   domain.    Names   database	is   from   the   US   Census	at
       http://www.census.gov/genealogy/names/ , courtesy of Trent Stanley.

       Send all comments and bug-reports to:

       vectro@RIG.sourceforge.net

								    4 JUN 2002								    RIG(6)
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