GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages


Manual Reference Pages  -  CATALYST::COMPONENT::CONTEXTCLOSURE (3)

.ds Aq ’

NAME

Catalyst::Component::ContextClosure - Moose Role for components which need to close over the $ctx, without leaking

CONTENTS

SYNOPSIS



    package MyApp::Controller::Foo;
    use Moose;
    use namespace::clean -except => meta;
    BEGIN {
        extends Catalyst::Controller;
        with Catalyst::Component::ContextClosure;
    }

    sub some_action : Local {
        my ($self, $ctx) = @_;
        $ctx->stash(a_closure => $self->make_context_closure(sub {
            my ($ctx) = @_;
            $ctx->response->body(body set from closure);
        }, $ctx));
    }



DESCRIPTION

A common problem with stashing a closure, that closes over the Catalyst context (often called $ctx or $c), is the circular reference it creates, as the closure holds onto a reference to context, and the context holds a reference to the closure in its stash. This creates a memory leak, unless you always carefully weaken the closures context reference.

This role provides a convenience method to create closures, that closes over $ctx.

METHODS

make_context_closure ($closure, CW$ctx)

Returns a code reference, that will invoke $closure with a weakened reference to $ctx. All other parameters to the returned code reference will be passed along to $closure.

SEE ALSO

Catalyst::Component

Catalyst::Controller

CatalystX::LeakChecker

COPYRIGHT

This library is free software. You can redistribute it and/or modify it under the same terms as Perl itself.
Search for    or go to Top of page |  Section 3 |  Main Index


perl v5.20.3 CATALYST::COMPONENT::CONTEXTCLOSURE (3) 2011-11-14

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.