Five Year Plan

A collection of thoughts about where we want to take WebKit over the next five years.

DOM Event Loop

High Level:This task would create a DOM event loop construct to be used in WebKit C++ code to provide HTML specification. Lower level: we would use platform run loop representations (ranging from CFRunLoop, to bare threads, to other platform primitives).

• Benefit:
  1. Fix lots of bugs because we enqueue events in one order, but they get fired in some other order.
  2. Would potentially help address our lack of micro-task abstraction.
• Potential problems:
  1. May be difficult to get right.
  2. Need to understand how this will interact with platform run loop

Render Tree Refcounting

Goal is to manage repaint complexity by moving to a refcount model.

• Downside:
  1. Potential for recycles.
  2. Slightly larger memory use (additional count)

Painting: Display Lists

Goal is to move drawing off of the main thread.

Image Decoding

Layout State Machine

Hackability

• Renaming.

Text Measurement

Compositing

• Downstream
• Incremental