POE::Resource(3pm)

✨ POE::Resource ✨

okay bestie, gather round, because we're about to talk about the behind-the-scenes icon of the POE::Kernel world 💖 This is the 3pm page from the User Contributed Perl Documentation, and it's all about the internal resource managers. no cap.

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💫 NAME 💫

POE::Resource — the internal resource managers for POE::Kernel. that's the whole vibe. it's the backstage crew, not the main character (yet) 👑

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🎀 SYNOPSIS 🎀

Varies, although most POE::Resource subclasses do not have public APIs.

yeah so like... it varies, bestie 😭 most of these subclasses have literally no public API. they're doing their little jobs quietly. respect.

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🌸 DESCRIPTION 🌸

so POE keeps track of a whole bunch of different types of information internally, right? and its Resource classes are mix-ins designed to manage each of those types of info behind tidy, mostly private interfaces 🫶

why though? because it makes testing easier, and it makes the eventual conversion to C way less cursed — you don't have to port POE::Kernel all in one go. it's giving "we split this up for our own sanity" energy, and honestly? valid 💅

The POE::Resource subclasses are generally pretty different from one another, but there are a few similarities worth clocking:

• Every resource should have an initializer and a finalizer method.
  • Initializers set up the initial data and link the resource into POE::Kernel.
  • Finalizers clean up whatever data is left over, and verify that each resource subsystem was left in a consistent state. tidy queen behavior 🧚
• One common theme across resource implementations: they don't need to do much error checking, if any at all. Resource methods are used internally by POE::Kernel and/or POE::API classes, so it's their job to make sure everything is being used correctly. no babysitting here 🙈

Now, the naming convention. Resource methods follow the pattern _data_???_activity, where the ??? is an abbreviation for the type of resource it belongs to. like so:

POE::Resource::Events      _data_ev_initialize
POE::Resource::FileHandles _data_handle_initialize
POE::Resource::Signals     _data_sig_initialize

and finalizer methods end in _finalize:

_data_ev_finalize
_data_handle_finalize
_data_sig_finalize

here's the important part, so listen up 🔥 Finalizers return true if a resource shut down cleanly, and false if there were inconsistencies or leaks during the end-of-run checking. the t/res/*.t tests rely on these return values, so like... they matter. no pressure bestie 😌

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🦋 SEE ALSO 🦋

go read these, they're all part of the same little family:

• POE::Resource::Aliases
• POE::Resource::Events
• POE::Resource::Extrefs
• POE::Resource::FileHandles
• POE::Resource::SIDs
• POE::Resource::Sessions
• POE::Resource::Signals

also peep "Resources" in POE::Kernel if you want the public tea about POE resources ☕✨

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💀 BUGS 💀

None known.

that's it. that's the section. iconic honestly. we love a clean bug report 🌈

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👑 AUTHORS & LICENSING 👑

Please see POE for more information about its authors, contributors, and licensing. gotta give credit where credit is due, periodt 💜

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and that's the whole page, bestie!! this one shipped with perl v5.34.0, dated 2022-03-25, and it lives at POE::Resource(3pm). mwah, go forth and read your man pages 🍓💖