Re: [MacPerl] MacPerl & Databases

[Chris Nandor <pudge@pobox.com>]

At 07.35 -0500 1999.01.03, Bart Lateur wrote:
>On Sat, 2 Jan 1999 18:02:11 -0500, Chris Nandor wrote:
>
>>flock() does not work with MacPerl.  One method that can work is with a
>>separate lock file: create a file called "file.lock" and have your other
>>programs fail while "file.lock" exists.  That approach is flawed in some
>>ways (if your program dies, then everything is locked out until you fix it
>>manually or something), but it is an alternative.
>
>Then try opening the file for output.
>
>Unlike Unix, but like PC, the Mac only allows opening for writing only
>to one program at a time. If your script dies, the file is automatically
>closed. Problem solved.

But the question was how to do this portably.  This method works of MacOS
particulars and will not work on other platforms.

>I'm not sure what good it is. After all, you can only run one MacPerl
>script at a time. Or do you plan to simultaniously open this file using
>another program as well?

You can run multiple MacPerl programs, if you have multiple MacPerl
interpreters, which I do sometimes.  And it is not a bad idea to plan for
the future, because it is likely that some time this year, you will be able
to run multiple scripts from within one MacPerl app.

--
Chris Nandor          mailto:pudge@pobox.com         http://pudge.net/
%PGPKey = ('B76E72AD', [1024, '0824090B CE73CA10  1FF77F13 8180B6B6'])

***** Want to unsubscribe from this list?
***** Send mail with body "unsubscribe" to mac-perl-request@iis.ee.ethz.ch