# phpman > man > Log::Dispatch::File::Locked

## NAME
    [Log::Dispatch::File::Locked](https://www.chedong.com/phpMan.php/perldoc/Log%3A%3ADispatch%3A%3AFile%3A%3ALocked/markdown) - Subclass of [Log::Dispatch::File](https://www.chedong.com/phpMan.php/perldoc/Log%3A%3ADispatch%3A%3AFile/markdown) to facilitate locking

## VERSION
    version 2.70

## SYNOPSIS
      use [Log::Dispatch](https://www.chedong.com/phpMan.php/perldoc/Log%3A%3ADispatch/markdown);

      my $log = [Log::Dispatch](https://www.chedong.com/phpMan.php/perldoc/Log%3A%3ADispatch/markdown)->new(
          outputs => [
              [
                  '[File::Locked](https://www.chedong.com/phpMan.php/perldoc/File%3A%3ALocked/markdown)',
                  min_level => 'info',
                  filename  => 'Somefile.log',
                  mode      => '>>',
                  newline   => 1
              ]
          ],
      );

      $log->emerg("I've fallen and I can't get up");

## DESCRIPTION
    This module acts exactly like [Log::Dispatch::File](https://www.chedong.com/phpMan.php/perldoc/Log%3A%3ADispatch%3A%3AFile/markdown) except that it obtains an exclusive lock on
    the file while opening it.

    Note that if you are using this output because you want to write to a file from multiple
    processes, you should open the file with the append "mode" (">>"), or else it's quite likely
    that one process will overwrite another.

## SEE ALSO
    "flock" in perlfunc

## SUPPORT
    Bugs may be submitted at <<https://github.com/houseabsolute/Log-Dispatch/issues>>.

    I am also usually active on IRC as 'autarch' on "irc://irc.perl.org".

## SOURCE
    The source code repository for Log-Dispatch can be found at
    <<https://github.com/houseabsolute/Log-Dispatch>>.

## AUTHOR
    Dave Rolsky <<autarch@urth.org>>

## COPYRIGHT AND LICENSE
    This software is Copyright (c) 2020 by Dave Rolsky.

    This is free software, licensed under:

      The Artistic License 2.0 (GPL Compatible)

    The full text of the license can be found in the LICENSE file included with this distribution.