Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
Hi all, The following code is running on a high traffic site:
open(file, "$mailclicks"); flock(file, 2); @recs = <file>; flock(file, + 8); close(file); $i = 0; foreach $rec (@recs) { $rec =~ s/\n//g; ($id,$description,$need,$received) = split(/::/,$ +rec); if ($id eq $formdata{'id'}) { $received++; $recs[$i] = "$id\:: +$description\::$need\::$received"; } $i++; } open(file, ">$mailclicks"); flock(file, 2); foreach $r (@recs) { print file "$r\n" unless ($r eq "" || $r eq " +\n"); } flock(file, 8); close(file);
This increments a tracking counter for use by another script. The problem is that the data file goes blank randomly. Other scripts access the file but I have isolated it to this snippet. I haven't been able to find a pattern or reproduce the problem myself. It generally takes 100 or so users before it happens. No corruption of the file along the way. I'm hoping this is a common problem in perl? Thanks much, Ian

In reply to Blank data file by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others about the Monastery: (3)
As of 2024-04-25 17:37 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found