Platform/2011-Q4-Goals

General Goals

• https://intranet.mozilla.org/2011Q4Goals

GFX

• [DONE] Fennec layers acceleration
  • Use OpenGL ES on at least a subset of Android hardware
• [AT RISK] CSS 3 Font Spec Implementation
  • Complete bug 651693
• [DROPPED] Electrolysis Accelerated Layers
  • Evaluate current status
  • Finish Direct3D 10/Direct2D, Direct3D 9, Mac OS X OpenGL layers implementation
  • For non-sandboxed processes only
• [DONE] Thebes wrapper for Azure
  • Land on mozilla-central
• [DONE] Skia backend for Azure
  • Landed and able to be turned on for canvas
  • Demoable for general content (not just canvas) - not necessarily demoable from mozilla-central
• [DROPPED] Texture sharing for WebGL
  • On OSes where it's supported, enable cross-process WebGL by sharing textures between content and chrome processes
• Other important Q4 work
  • [DROPPED] Finish cross-process Linux OpenGL layers implementation (on desktop)
  • Azure - Cairo backend
    • Possibly only on graphics branch
  • Continue using telemetry
  • Imagelib work on memory usage and efficiency
  • Windows 7 font rendering survey via Test Pilot
  • [DONE] Multiple GPU support on Mac OS X
  • WebGL improvements
    • [DONE] Anti-aliasing
    • [DONE] ARB_robustness / EGL_LOST_CONTEXT
    • Auditing remaining failing conformance tests

Layout

• [DONE] Complete Mobile Readability project (Phase 1 landed.)
• [MISSED] Diagnostic tools for text and font memory usage in about:memory
• [DONE] Graphite Font Layout system implemented and landed pref'd off
• [ON TRACK] Multi-column Compliance (de-prefixing)
  • Implementation of column-fill property needs to be finished and landed.
  • De-prefixing of all current column implementation, except column-span, needs to be finished and landed.
  • Implementation of column-span property has been moved to Q1 2012.
• [MISSED] Complete SVG migration to DisplayList (Performance)
  • We de-prioritized SVG work in Q4 to fix other bugs
• [MISSED] Implement CSS spec for flexbox
  • CSS flexbox spec is still in working draft & undergoing significant changes. New ETA for this feature: Q1 2012
• [DONE] Selection bit - Move from Layout to Content - Mutation events update DOM (619273)
• [DONE] View class removal from Decks/XUL done. (bug 655263)
• [DROPPED] Page Break Support
  • We de-prioritized Page Break in Q4 to work on other specs
• [DROPPED] CSS Ruby on mozilla-central
  • not currently assigned

Video

• [MISSED] MediaStream infrastructure landed on mozilla-central with Worker-based processing enabled and some media element integration
• [MISSED] libcubeb sound library replacing libsydneyaudio on mozilla-central
• [DONE] fullscreen API enabled on mozilla-central
• [MISSED] direct pushing of video frames to compositor thread for e10s
• [MISSED] eliminate unnecessary copy with video decoder API changes

DOM

• [MISSED] Close the gap between what can be expressed in WebIDL and what our IDL tooling supports
  • Good progress made here, but we missed this goal for two reasons:
    • The spec changed last minute
    • This turned into a bigger task than originally believed
• [DONE] Make cycles involving weak maps and the DOM not leak
• [MISSED] JS Compartment per global (carryover from last quarter, this may not be hittable due to timing of blocking bugs)
  • Missed due to timing of blocking bugs
• [MISSED] Have a real plan for what the new DOM bindings will look like
  • Missed due to resource availability.
• [DONE] Review and land View Source rewrite
• [MISSED] Add support for the new mutation observer proposal (to replace DOM Mutation Event support eventually)
  • Missed due to cycle collection time fixing was deemed more important (snappy)
• [DONE] Add support for (callable) event constructors

WebAPI

• [MISSED] Camera support landed (and maybe turned on)
  • Missed due to WebAPPs work being prioritized over this, and also due to lack of windows build system at the time this work was being done
• [MISSED] Basic camera in-page UI implemented. Not CSS configurable yet
  • Missed due to WebAPPs work being prioritized over this, and also due to lack of windows build system at the time this work was being done
• [MISSED] SMS landed. Might not have security model in place. Turned on for B2G
  • Patch ready and reviewed, but the native mobile frontend threw a wrench in the wheel for landing this in time
• [DONE] DOM-side of telephony done. Nothing turned on as we'll be missing radio part
• [DONE] IndexedDB fully up to spec (including version API change, delete database, and arrays as keys, the last of which might be a stretch)
• [DONE] File support in IndexedDB
• [MISSED] Have spec for how capability management in apps will work
  • Missed in favor of finishing up the IndexedDB stretch goal
• [DONE] Battery API on android and one other platform
• [DONE] Network API on android and one other platform -- Not landed yet, but all the work is done (1 review pending for linux)
• [DONE] Implement App-cache to current spec
• [MISSED] Contacts API spec (spec proposal only, no implementation) -- about 50% there, but not done yet.
  • Missed in favor of finishing up the IndexedDB stretch goal

JS

• [MISSED] Land incremental GC.
• [MISSED] Land Harmony modules.
• [MISSED] Land support for JS profiler.
• [DONE] Shrink JSObject to ~5 words.

Accessibility

• [DONE] Mobile: Accessibility enabled on FF android builds
• [DROPPED] E10S: phase 2. All gecko-side a11y engine work done for parity with single process.
• [MISSED] Canvas accessibility: build accessible subtree.
• [MISSED] Improve accessible tree updating [bug 690417]
• Other activities: Additional Telemetry, B2G test framework collab.

Multi-Process

• [DROPPED] Continue regular tracking and resolution of short-term goals
• [DROPPED] Remove the need for the --enable-e10s-compat build flag, so users can simply set a pref in Firefox to get multi-process tabs. Note that some or many features still may not work this quarter.
• [DROPPED] Get windowless and windowed plugins working on all platforms.
• [DONE] Identify which addons must continue to work to get 80% of users multi-process tabs
• [DROPPED] Develop a plan for addon compatibility with content processes. (This may involve a combination of Firefox compatibility shims, porting addons to the Jetpack SDK, manual rewriting, or automatic rewriting).
• [DROPPED] Measure the memory usage of multiple content processes and identify wasted space and a plan to correct any issues.
• [DROPPED] Identify remaining issues which need input from the UX team for mobile and desktop, including panning responsiveness/checkerboarding tradeoffs (primarily mobile) and misbehaving/crashing content UI (desktop)

Perf

• [DROPPED] Valgrind developer ROM for pandaboard or Nexus S
• [DROPPED] linux "perf"-counters in zippity(depends on above ROM to have perf support in kernel)
• [MISSED] Bug 662444: exit(0) "immediate" shutdown prototype and a plan to land it
• [MISSED] Bug 686805: Incremental decompression for libxul on Android
• [DROPPED] Startup-ordered binary on Windows
• deprioritized: 0 fennec sqlite fsyncs on first startup

Networking

• [DONE] Improve SSL performance and responsiveness by fixing bug 511393. This is also important for SPDY.
• [DONE] Add support for high-resolution timers on Windows, bug 676349. - PGO builds broken with the current patch
• [DONE] Improve dual-stack IPv6 experience by implementing an effective form of "happy eyeballs" IPv6 auto-detection at TCP open. This means resolving bug 684893.
• [DONE] Have full implementation of final WebSockets spec implemented and in the tree in a shippable state.
• [MISSED] Land pipelining improvements from Patrick McManus.
  • 75% completed.
• [DONE] Land SPDY implementation, bug 528288. OK if it remains pref'd off.
• [DONE] Work towards an effective mobile disk cache implementation.
  • Create a specific set of questions that need answering in order to make a plan.
  • Create system with which to measure cache performance locally.
    • Some microbenchmarks have been set up; WIP to analyze and understand results. See Necko/MobileCache/MicroBenchmarks for status
    • WIP for a test-driver to fetch whole pagesets (much like Talos, but necko-only)
  • Create a plan for a mobile disk cache based gathered data.
• [DONE] Improve App Cache support by resolving bug 538595 and bug 538588.
• [MISSED] Resolve all networking security bugs that received a designation of sg:moderate or higher more than six weeks ago. This will become a permanent goal for the group.
  • 50% completed. This was our first quarter with this goal so we dealt with a large backlog.

Mobile

• NPAPI/Flash on Honeycomb integration and support
• Native front end prototype
• Automated Unit & Talos tests should be less than 5% unreliable (Matching desktop reliability)
• Achieve consensus on and create a reliable process for mobile responsiveness testing and evaluation (matrix, methods, analysis).
• Land on baseline numbers based on the above and create measurable perf targets through March 2012.
• Re-energize efforts to resolve mobile startup shrink issues
• Make more progress on Keyboard and IME bugs

B2G

• Gingerbread ROM with symbols for Galaxy S2 for Android Firefox debugging
• B2G ROM that can be used to build a basic phone (phone, contacts, vibrator, wifi, lock screen, etc).
• Basic Phone UI (Gaia) for B2G that can be used as primary phone for Mozilla developers

Research

• Rust: Release version 0.1
• Servo: Make DOM.js complete enough to run jQuery
• TC39: Implement modules in SpiderMonkey
• GPU Research: Investigate WebGL Video decoding