in reply to Re: Re: Re: Re: Can I Create A Persistent Flock Under CGI.pm?
in thread Can I Create A Persistent Flock Under CGI.pm?

My program is not in a mod_perl environment, so your solution might work for others but not for me.

mod_perl seems to require that I recompile Apache and I am frightened of doing it. In addition, I think that mod_perl is a Fool-Killer and breaks scripts that are written by fools like me who do not always do things the CGI.pm way.

Actually, it looks as though the semaphore solution offered by Japhy below will work and is within my capabilities to implement.

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Re: Re: Re: Re: Re: Re: Can I Create A Persistent Flock Under CGI.pm?
by shotgunefx (Parson) on May 30, 2001 at 02:24 UTC
    Actually it will work for regular CGI as well. The usecs won't hurt anything at all. I just decided to add it as an extra precaution because I do CGI and mod_perl.

    For what you are doing, I would
    1. If the user doesn't have a sessionID cookie generate a sessionID for the user and set the cookie with the sessionID
    2. Use this as the file name. (Make sure to use Taint and check the sessionID for naughty characters.)
    3. Open the sessionID named file and read/store you data.
    4. Write a script to clean up old files and throw it in cron.

    If you are really worried about filename collisions, write the files to a directory only used by this program.

    -Lee

    "To be civilized is to deny one's nature."
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