NAME
Scaffold::Lockmgr - The base class for locking within Scaffold
SYNOPSIS
if ($self->scaffold->lockmgr->try_lock($lock)) {
if ($self->scaffold->lockmgr->lock($lock)) {
....
$self->scaffold->lockmgr->unlock($lock);
}
}
DESCRIPTION
This module provides a general purpose locking mechanism to protect shared resources. It is rather interesting to ask a developer how they protect session data and/or global shared data. They usually answer, "I use such-and-such session module, and what do you mean by "global shared data" ?". Well, for those who understand the need for resource locking, this module provides it for Scaffold.
METHODS
- allocate
-
$self->scaffold->lockmgr->allocate($lock);
Reserve a lock by this name. This needs to be done before a lock is used. This name can be used when trying to lock and unlock resources.
- deallocate
-
$self->scaffold->lockmgr->deallocate($lock);
Removes the reservation for the name. This frees up a lock that can be subseqently reused.
- lock
-
Aquires a lock on a resource, return true if successful.
$self->scaffold->lockmgr->lock($lock);
- unlock
-
Releases the lock on a resource.
$self->scaffold->lockmgr->unlock($lock);
- try_lock
-
Tests to see if the lock on a resource is available, returns true if the lock is available.
$self->scaffold->lockmgr->try_lock($lock);
SEE ALSO
Scaffold
Scaffold::Base
Scaffold::Cache
Scaffold::Cache::FastMmap
Scaffold::Cache::Manager
Scaffold::Cache::Memcached
Scaffold::Class
Scaffold::Constants
Scaffold::Engine
Scaffold::Handler
Scaffold::Handler::Default
Scaffold::Handler::Favicon
Scaffold::Handler::Robots
Scaffold::Handler::Static
Scaffold::Lockmgr
Scaffold::Lockmgr::KeyedMutex
Scaffold::Lockmgr::UnixMutex
Scaffold::Plugins
Scaffold::Render
Scaffold::Render::Default
Scaffold::Render::TT
Scaffold::Routes
Scaffold::Server
Scaffold::Session::Manager
Scaffold::Stash
Scaffold::Stash::Controller
Scaffold::Stash::Cookie
Scaffold::Stash::View
Scaffold::Uaf::Authenticate
Scaffold::Uaf::AuthorizeFactory
Scaffold::Uaf::Authorize
Scaffold::Uaf::GrantAllRule
Scaffold::Uaf::Login
Scaffold::Uaf::Logout
Scaffold::Uaf::Manager
Scaffold::Uaf::Rule
Scaffold::Uaf::User
Scaffold::Utils
AUTHOR
Kevin L. Esteb, <kevin@kesteb.us>
COPYRIGHT AND LICENSE
Copyright (C) 2009 by Kevin L. Esteb
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.5 or, at your option, any later version of Perl 5 you may have available.