it should work, right?

In addition to the comments by the others, I would suggest using flock, turning on Data::Dumper's Useqq option, and adding more error checking.

use warnings;
use strict;
use Fcntl qw/:flock/;
use Data::Dumper;

sub write_log {
    my ($file, $obj) = @_;
    open my $fh, '>>', $file or die "open $file: $!";
    flock($fh, LOCK_EX) or die "flock $file: $!";
    print {$fh} Data::Dumper->new([$obj])->Useqq(1)->Dump
        or die "print $file: $!";
    close $fh or die "close $file: $!";
}

write_log("/tmp/log.txt", {hello=>"world"});

[download]

If that didn't work or die, personally I would assume the code really wasn't being run, or perhaps that some other process was messing with the logfile. (Note it's been a while since I've used flock on Windows, but I assume you're on *NIX based on your filename.)

There's definitely nothing wrong with the logfile

Well now that you've said that, I have to ask ;-) Are you sure? SELinux? Are all the processes spawned by the script running as the same user?

In reply to Re: Why can't some of my modules do log output to a file? by haukex
in thread Why can't some of my modules do log output to a file? by LittleJack

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