Terminology

• HLL: high level language (e.g. Rakudo Perl 6, PHP)
• NCI: Parrot's native call interface, used to call C functions from Parrot
• HLL layer: code that implements a particular HLL Apache module
• Metahandler: code that implements a single Apache phase for a particular HLL
• PMC: Parrot Magic Cookie
• Context:

Design Goals

• Provide an interface to the Apache API and data structures to the Parrot VM
• HLL modules require no C code
• Remain invisible to the end user

mod_parrot Module

Apache Interface

NCI Functions

Parrot Objects

HLL Modules

Module Registration

Metahandlers

Multiprocessing Module Support

Prefork MPM

Threaded MPM (e.g. worker)