Fellow Monks
I'm trying to create a script that uses an alarm handler to
cause a reoccuring event within a while loop.
To the best of my knowledge the manner at which I'm doing this is acceptable. However, I'm curious
to know if there's a better way. Or perhaps a more proper or stable way. Not that I knowingly find this
unstable, but the line in
perlipc That means that doing nearly anything in your handler could in theory trigger a memory fault and
subsequent core dump.
has always been a concern. Anyway, it's something like ...
#!/usr/bin/perl
$SIG{ALRM} = sub {alarm(0);print "blah\n";alarm(10);};
open(FILE, "tail -f /var/log/messages|");
$| = 1;
alarm(10);
while(<FILE>){
print $_;
}
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.