Gecko [ fernandoquevedodop.com ]

Name	Size	Permission
DotLock.pm	2.81 KB	-rw-r--r--
DotLock.pod	5.07 KB	-rw-r--r--
FcntlLock.pm	2.59 KB	-rw-r--r--
FcntlLock.pod	5.46 KB	-rw-r--r--
Flock.pm	2.38 KB	-rw-r--r--
Flock.pod	5.63 KB	-rw-r--r--
Multi.pm	2.43 KB	-rw-r--r--
Multi.pod	5.58 KB	-rw-r--r--
Mutt.pm	2.39 KB	-rw-r--r--
Mutt.pod	5.02 KB	-rw-r--r--
NFS.pm	3.29 KB	-rw-r--r--
NFS.pod	5.51 KB	-rw-r--r--
POSIX.pm	2.71 KB	-rw-r--r--
POSIX.pod	5.82 KB	-rw-r--r--

Code Editor : DotLock.pm

# Copyrights 2001-2020 by [Mark Overmeer].
#  For other contributors see ChangeLog.
# See the manual pages for details on the licensing terms.
# Pod stripped from pm file by OODoc 2.02.
# This code is part of distribution Mail-Box.  Meta-POD processed with
# OODoc into POD and HTML manual-pages.  See README.md
# Copyright Mark Overmeer.  Licensed under the same terms as Perl itself.

package Mail::Box::Locker::DotLock;
use vars '$VERSION';
$VERSION = '3.009';

use base 'Mail::Box::Locker';

use strict;
use warnings;

use IO::File;
use File::Spec;
use Errno      qw/EEXIST/;
use Carp;

sub init($)
{   my ($self, $args) = @_;
    $args->{file} = $args->{dotlock_file} if $args->{dotlock_file};
    $self->SUPER::init($args);
}

sub name() {'DOTLOCK'}

sub folder(;$)
{   my $self = shift;
    @_ && $_[0] or return $self->SUPER::folder;

my $folder = shift;
    unless(defined $self->filename)
    {   my $org = $folder->organization;

my $filename
          = $org eq 'FILE'     ? $folder->filename . '.lock'
          : $org eq 'DIRECTORY'? File::Spec->catfile($folder->directory,'.lock')
          : croak "Need lock file name for DotLock.";

$self->filename($filename);
    }

$self->SUPER::folder($folder);
}

sub _try_lock($)
{   my ($self, $lockfile) = @_;
    return if -e $lockfile;

my $lock = IO::File->new($lockfile, $flags, 0600);
    if($lock)
    {   close $lock;
        return 1;
    }

if($! != EEXIST)
    {   $self->log(ERROR => "lockfile $lockfile can never be created: $!");
        return 1;
    }
}

sub unlock()
{   my $self = shift;
    $self->hasLock
        or return $self;

my $lock = $self->filename;

unlink $lock
        or $self->log(WARNING => "Couldn't remove lockfile $lock: $!");

$self->SUPER::unlock;
    $self;
}

sub lock()
{   my $self   = shift;

my $lockfile = $self->filename;
    if($self->hasLock)
    {   $self->log(WARNING => "Folder already locked with file $lockfile");
        return 1;
    }

my $timeout  = $self->timeout;
    my $end      = $timeout eq 'NOTIMEOUT' ? -1 : $timeout;
    my $expire   = $self->expires/86400;  # in days for -A

while(1)
    {
        return $self->SUPER::lock
           if $self->_try_lock($lockfile);

if(-e $lockfile && -A $lockfile > $expire)
        {
            if(unlink $lockfile)
            {   $self->log(WARNING => "Removed expired lockfile $lockfile");
                redo;
            }
            else
            {   $self->log(ERROR =>
                   "Failed to remove expired lockfile $lockfile: $!");
                last;
            }
        }

last unless --$end;
        sleep 1;
    }

return 0;
}

sub isLocked() { -e shift->filename }

${this.title}

Code Editor : DotLock.pm