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.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
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.IX Title "Mail::Box::Locker::Multi 3"
.TH Mail::Box::Locker::Multi 3 2026-04-11 "perl v5.42.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH NAME
Mail::Box::Locker::Multi \- lock a folder in all ways which work
.SH INHERITANCE
.IX Header "INHERITANCE"
.Vb 3
\& Mail::Box::Locker::Multi
\&   is a Mail::Box::Locker
\&   is a Mail::Reporter
.Ve
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\&  See Mail::Box::Locker
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
The \f(CW\*(C`::Multi\*(C'\fR 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.
.PP
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.
.PP
Extends "DESCRIPTION" in Mail::Box::Locker.
.SH METHODS
.IX Header "METHODS"
Extends "METHODS" in Mail::Box::Locker.
.SS Constructors
.IX Subsection "Constructors"
Extends "Constructors" in Mail::Box::Locker.
.ie n .IP $class\->\fBnew\fR(%options) 4
.el .IP \f(CW$class\fR\->\fBnew\fR(%options) 4
.IX Item "$class->new(%options)"
You may also pass all \f(CW%options\fR understood by the initiated lockers
used by the multi locker.
Improves base, see "METHODS" in Mail::Box::Locker
.Sp
.Vb 7
\& \-Option \-\-Defined in       \-\-Default
\&  expires  Mail::Box::Locker  1 hour
\&  file     Mail::Box::Locker  undef
\&  folder   Mail::Box::Locker  <C<undef>>
\&  method   Mail::Box::Locker  \*(AqMULTI\*(Aq
\&  timeout  Mail::Box::Locker  10
\&  use                         <all possible>
.Ve
.RS 4
.ie n .IP "expires => $seconds" 2
.el .IP "expires => \f(CW$seconds\fR" 2
.IX Item "expires => $seconds"
.PD 0
.ie n .IP "file => $file" 2
.el .IP "file => \f(CW$file\fR" 2
.IX Item "file => $file"
.ie n .IP "folder => $folder" 2
.el .IP "folder => \f(CW$folder\fR" 2
.IX Item "folder => $folder"
.ie n .IP "method => $name|CLASS|\e@names" 2
.el .IP "method => \f(CW$name\fR|CLASS|\e@names" 2
.IX Item "method => $name|CLASS|@names"
.ie n .IP "timeout => $seconds|\*(AqNOTIMEOUT\*(Aq" 2
.el .IP "timeout => \f(CW$seconds\fR|\*(AqNOTIMEOUT\*(Aq" 2
.IX Item "timeout => $seconds|'NOTIMEOUT'"
.IP "use => ARRAY\-of\-(NAMES|LOCKER)" 2
.IX Item "use => ARRAY-of-(NAMES|LOCKER)"
.PD
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).
.Sp
Some locking types are not available on some platforms, so they will
not be excluded from the default list (NFS POSIX Flock).
.RE
.RS 4
.Sp
» example: using a subset of multi\-lockers
.Sp
.Vb 1
\&  my $locker = Mail::Box::Locker::Multi\->new(use => [\*(AqDOTLOCK\*(Aq,\*(AqFLOCK\*(Aq]);
.Ve
.RE
.SS Attributes
.IX Subsection "Attributes"
Extends "Attributes" in Mail::Box::Locker.
.ie n .IP "$obj\->\fBexpires\fR( [SECONDS] )" 4
.el .IP "\f(CW$obj\fR\->\fBexpires\fR( [SECONDS] )" 4
.IX Item "$obj->expires( [SECONDS] )"
Inherited, see "Attributes" in Mail::Box::Locker
.ie n .IP "$obj\->\fBfilename\fR( [$filename] )" 4
.el .IP "\f(CW$obj\fR\->\fBfilename\fR( [$filename] )" 4
.IX Item "$obj->filename( [$filename] )"
Inherited, see "Attributes" in Mail::Box::Locker
.ie n .IP "$obj\->\fBfolder\fR( [$folder] )" 4
.el .IP "\f(CW$obj\fR\->\fBfolder\fR( [$folder] )" 4
.IX Item "$obj->folder( [$folder] )"
Inherited, see "Attributes" in Mail::Box::Locker
.ie n .IP $obj\->\fBlockers\fR() 4
.el .IP \f(CW$obj\fR\->\fBlockers\fR() 4
.IX Item "$obj->lockers()"
Returns a list with all locker objects used by this object.
.ie n .IP $obj\->\fBname\fR() 4
.el .IP \f(CW$obj\fR\->\fBname\fR() 4
.IX Item "$obj->name()"
Inherited, see "Attributes" in Mail::Box::Locker
.ie n .IP "$obj\->\fBtimeout\fR( [SECONDS] )" 4
.el .IP "\f(CW$obj\fR\->\fBtimeout\fR( [SECONDS] )" 4
.IX Item "$obj->timeout( [SECONDS] )"
Inherited, see "Attributes" in Mail::Box::Locker
.SS Locking
.IX Subsection "Locking"
Extends "Locking" in Mail::Box::Locker.
.ie n .IP $obj\->\fBhasLock\fR() 4
.el .IP \f(CW$obj\fR\->\fBhasLock\fR() 4
.IX Item "$obj->hasLock()"
Inherited, see "Locking" in Mail::Box::Locker
.ie n .IP $obj\->\fBisLocked\fR() 4
.el .IP \f(CW$obj\fR\->\fBisLocked\fR() 4
.IX Item "$obj->isLocked()"
Inherited, see "Locking" in Mail::Box::Locker
.ie n .IP $obj\->\fBlock\fR($folder) 4
.el .IP \f(CW$obj\fR\->\fBlock\fR($folder) 4
.IX Item "$obj->lock($folder)"
Inherited, see "Locking" in Mail::Box::Locker
.ie n .IP $obj\->\fBunlock\fR() 4
.el .IP \f(CW$obj\fR\->\fBunlock\fR() 4
.IX Item "$obj->unlock()"
Inherited, see "Locking" in Mail::Box::Locker
.SS "Error handling"
.IX Subsection "Error handling"
Extends "Error handling" in Mail::Box::Locker.
.ie n .IP $obj\->\fBAUTOLOAD\fR() 4
.el .IP \f(CW$obj\fR\->\fBAUTOLOAD\fR() 4
.IX Item "$obj->AUTOLOAD()"
Inherited, see "Error handling" in Mail::Reporter
.ie n .IP $obj\->\fBnotImplemented\fR() 4
.el .IP \f(CW$obj\fR\->\fBnotImplemented\fR() 4
.IX Item "$obj->notImplemented()"
Inherited, see "Error handling" in Mail::Reporter
.SS Cleanup
.IX Subsection "Cleanup"
Extends "Cleanup" in Mail::Box::Locker.
.ie n .IP $obj\->\fBDESTROY\fR() 4
.el .IP \f(CW$obj\fR\->\fBDESTROY\fR() 4
.IX Item "$obj->DESTROY()"
Inherited, see "Cleanup" in Mail::Box::Locker
.SH DIAGNOSTICS
.IX Header "DIAGNOSTICS"
.ie n .IP "Error: class $package does not implement method $method." 4
.el .IP "Error: class \f(CW$package\fR does not implement method \f(CW$method\fR." 4
.IX Item "Error: class $package does not implement method $method."
Fatal error: the specific \f(CW$package\fR (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.
Cast by \f(CWnotImplemented()\fR
.SH "SEE ALSO"
.IX Header "SEE ALSO"
This module is part of Mail\-Box version 4.02,
built on April 10, 2026. Website: \fIhttp://perl.overmeer.net/CPAN/\fR
.SH LICENSE
.IX Header "LICENSE"
For contributors see file ChangeLog.
.PP
This software is copyright (c) 2001\-2026 by Mark Overmeer.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.