have you tested that well? i just days ago did the same and found...

# Proc/PID/File.pm
sub alive {
        my $self = shift;
        my $pid = $self->read();

        print "> Proc::PID::File - pid: $pid"
                if $self->{debug};
        return $pid if $pid && $pid != $$ && kill(0, $pid);

#       $self->write();
        return 0;
        }

# i've commented out the write() because i don't think that testing
# for aliveness should write a pidfile...

sub DESTROY {
        my $self = shift;
        $self->remove() if $self->{path} and $self->{written};
        }

# i've added a written test so i don't remove pidfiles that aren't min
+e

# add this to the end of write()
        $self->{written} = 1;
# add this to file()
        $self->{written} = 0;

[download]

because: 

die "Already running!" if Proc::PID::File->new()->alive();

[download]
would delete the pidfile that it found...

In reply to Re: Re: Keeping File Locks after Daemonization by zengargoyle
in thread Keeping File Locks after Daemonization by SIGSEGV

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