Mail::Box::Locker::FcntlLock(3)            User Contributed Perl Documentation


NAME
       Mail::Box::Locker::FcntlLock - lock a folder using File::FcntlLock

INHERITANCE
        Mail::Box::Locker::FcntlLock
          is a Mail::Box::Locker
          is a Mail::Reporter

SYNOPSIS
        See Mail::Box::Locker

DESCRIPTION
       This locker object is uses File::FcntlLock, and was contributed by Jim
       in Aus. It is close to Mail::Box::Locker::POSIX, but does work on more
       systems, for instance Darwin.

       You will need to install File::FcntlLock separately: there is no
       dependency to it by the MailBox distribution.

       Extends "DESCRIPTION" in Mail::Box::Locker.

METHODS
       Extends "METHODS" in Mail::Box::Locker.

   Constructors
       Extends "Constructors" in Mail::Box::Locker.

       Mail::Box::Locker::FcntlLock->new(%options)
            -Option --Defined in       --Default
             expires  Mail::Box::Locker  1 hour
             file     Mail::Box::Locker  undef
             folder   Mail::Box::Locker  <undef>
             log      Mail::Reporter     'WARNINGS'
             method   Mail::Box::Locker  FcntlLock
             timeout  Mail::Box::Locker  10
             trace    Mail::Reporter     'WARNINGS'

           expires => SECONDS
           file => FILENAME
           folder => FOLDER
           log => LEVEL
           method => STRING|CLASS|ARRAY
           timeout => SECONDS|'NOTIMEOUT'
           trace => LEVEL

   Attributes
       Extends "Attributes" in Mail::Box::Locker.

       $obj->expires( [SECONDS] )
           Inherited, see "Attributes" in Mail::Box::Locker

       $obj->timeout( [SECONDS] )
           Inherited, see "Attributes" in Mail::Box::Locker

   The Locker
       Extends "The Locker" in Mail::Box::Locker.

       $obj->filename( [$filename] )
           Inherited, see "The Locker" in Mail::Box::Locker

       $obj->folder( [$folder] )
           Inherited, see "The Locker" in Mail::Box::Locker

       $obj->name()
           Inherited, see "The Locker" in Mail::Box::Locker

   Locking
       Extends "Locking" in Mail::Box::Locker.

       $obj->hasLock()
           Inherited, see "Locking" in Mail::Box::Locker

       $obj->isLocked()
       $obj->lock()
       $obj->unlock()
           Inherited, see "Locking" in Mail::Box::Locker

   Error handling
       Extends "Error handling" in Mail::Box::Locker.

       $obj->AUTOLOAD()
           Inherited, see "Error handling" in Mail::Reporter

       $obj->addReport($object)
           Inherited, see "Error handling" in Mail::Reporter

       $obj->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level,
       $callback] )
       Mail::Box::Locker::FcntlLock->defaultTrace( [$level]|[$loglevel,
       $tracelevel]|[$level, $callback] )
           Inherited, see "Error handling" in Mail::Reporter

       $obj->errors()
           Inherited, see "Error handling" in Mail::Reporter

       $obj->log( [$level, [$strings]] )
       Mail::Box::Locker::FcntlLock->log( [$level, [$strings]] )
           Inherited, see "Error handling" in Mail::Reporter

       $obj->logPriority($level)
       Mail::Box::Locker::FcntlLock->logPriority($level)
           Inherited, see "Error handling" in Mail::Reporter

       $obj->logSettings()
           Inherited, see "Error handling" in Mail::Reporter

       $obj->notImplemented()
           Inherited, see "Error handling" in Mail::Reporter

       $obj->report( [$level] )
           Inherited, see "Error handling" in Mail::Reporter

       $obj->reportAll( [$level] )
           Inherited, see "Error handling" in Mail::Reporter

       $obj->trace( [$level] )
           Inherited, see "Error handling" in Mail::Reporter

       $obj->warnings()
           Inherited, see "Error handling" in Mail::Reporter

   Cleanup
       Extends "Cleanup" in Mail::Box::Locker.

       $obj->DESTROY()
           Inherited, see "Cleanup" in Mail::Box::Locker

DIAGNOSTICS
       Warning: Folder $folder already lockf'd
       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.

       Error: Unable to check lock file $filename for $folder: $!
           To check whether the filename is used to flock a folder, the file
           must be opened.  Apparently this fails, which does not mean that
           the folder is locked neither that it is unlocked.

       Error: Unable to open FcntlLock lock file $filename for $folder: $!
           For FcntlLock style locking, a folder it must be opened, which does
           not succeed for the specified reason.

       Error: Will never get a FcntlLock lock at $filename for $folder: $!
           Tried to lock the folder, but it did not succeed.  The error code
           received from the OS indicates that it will not succeed ever, so we
           do not need to try again.

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/

perl v5.36.0                      2022-06-02   Mail::Box::Locker::FcntlLock(3)