# phpman > man > Mail::Box::Locker::Multi(3pm)

## NAME
    [Mail::Box::Locker::Multi](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker%3A%3AMulti/markdown) - lock a folder in all ways which work

## INHERITANCE
     [Mail::Box::Locker::Multi](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker%3A%3AMulti/markdown)
       is a [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)
       is a [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

## SYNOPSIS
     See [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

## DESCRIPTION
    The "::Multi" locker locks a folder in each way it can. This way, the chance is highest that any
    other program will leave the folder alone during our access to it.

    NFS-lock and Flock are tried. More may be added when the ways to lock are extended. DotLock
    overlaps with NFS-lock, but NFS-lock is safer, so that version is preferred.

    Extends "DESCRIPTION" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown).

## METHODS
    Extends "METHODS" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown).

### Constructors
    Extends "Constructors" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown).

    [Mail::Box::Locker::Multi](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker%3A%3AMulti/markdown)->new(%options)
        You may also pass all %options understood by the initiated lockers used by the multi locker.

         -Option --Defined in       --Default
          expires  [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)  1 hour
          file     [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)  undef
          folder   [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)  <undef>
          log      [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)     'WARNINGS'
          method   [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)  'MULTI'
          timeout  [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)  10
          trace    [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)     'WARNINGS'
          use                         <all possible>

        expires => SECONDS
        file => FILENAME
        folder => FOLDER
        log => LEVEL
        method => STRING|CLASS|ARRAY
        timeout => SECONDS|'NOTIMEOUT'
        trace => LEVEL
        use => ARRAY-of-(NAMES|LOCKER)
          Array of locker type NAMES or LOCKER objects to be used to lock one folder. The type NAMES
          are converted into objects. When you create your own LOCKER objects, be sure to set the
          timeout very short (preferably to 1).

          Some locking types are not available on some platforms, so they will not be excluded from
          the default list (NFS POSIX Flock).

        example: using a subset of multi-lockers

         my $locker = [Mail::Box::Locker::Multi](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker%3A%3AMulti/markdown)->new(use => ['DOTLOCK','FLOCK']);

### Attributes
    Extends "Attributes" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown).

    $obj->expires( [SECONDS] )
        Inherited, see "Attributes" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

    $obj->timeout( [SECONDS] )
        Inherited, see "Attributes" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

### The Locker
    Extends "The Locker" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown).

    $obj->filename( [$filename] )
        Inherited, see "The Locker" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

    $obj->folder( [$folder] )
        Inherited, see "The Locker" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

    $obj->lockers()
        Returns a list with all locker objects used by this object.

    $obj->name()
        Inherited, see "The Locker" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

### Locking
    Extends "Locking" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown).

    $obj->hasLock()
        Inherited, see "Locking" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

    $obj->isLocked()
        Inherited, see "Locking" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

    $obj->lock($folder)
        Inherited, see "Locking" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

    $obj->unlock()
        Inherited, see "Locking" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

### Error handling
    Extends "Error handling" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown).

    $obj->AUTOLOAD()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->addReport($object)
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
    [Mail::Box::Locker::Multi](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker%3A%3AMulti/markdown)->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->errors()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->log( [$level, [$strings]] )
    [Mail::Box::Locker::Multi](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker%3A%3AMulti/markdown)->log( [$level, [$strings]] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->logPriority($level)
    [Mail::Box::Locker::Multi](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker%3A%3AMulti/markdown)->logPriority($level)
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->logSettings()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->notImplemented()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->report( [$level] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->reportAll( [$level] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->trace( [$level] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->warnings()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

### Cleanup
    Extends "Cleanup" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown).

    $obj->DESTROY()
        Inherited, see "Cleanup" in [Mail::Box::Locker](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3ABox%3A%3ALocker/markdown)

## DIAGNOSTICS
    Error: Package $package does not implement $method.
        Fatal error: the specific package (or one of its superclasses) does not implement this
        method where it should. This message means that some other related classes do implement this
        method however the class at hand does not. Probably you should investigate this and probably
        inform the author of the package.

## SEE ALSO
    This module is part of Mail-Box distribution version 3.009, built on August 18, 2020. Website:
    <http://perl.overmeer.net/CPAN/>

## LICENSE
    Copyrights 2001-2020 by [Mark Overmeer]. For other contributors see ChangeLog.

    This program is free software; you can redistribute it and/or modify it under the same terms as
    Perl itself. See <http://dev.perl.org/licenses/>