Platform/2011-06-28

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Q3 Goals

• Realize Android as a top-tier supported platform alongside Windows, Mac, and Linux.
• Implement priortized list of features required to support Web Apps (Joint with Product and Apps teams).
• Ship a new developer tool prototype in a release.

Notices / Schedule

• Firefox 5 looks great, thanks everyone for your hard work!
• Next mozilla-central → mozilla-aurora source migration is on 2011-07-05 (1 week!)
• We’ll have a rapid-release process postmortem this Thursday, 2011-06-30 from 10:00 am PDT – 12:00 noon PDT. Details will be sent to dev-planning today

Firefox Development

GFX

• Bas landed the new Azure Canvas backend using Direct2D on mozilla-central. Nightly is much faster on a lot of benchmarks!
  • Preliminary results were published a while ago.
  • Please test sites that use Canvas, and report bugs!
• If you’re using Windows 7 or Vista, please fill out John Daggett’s DirectWrite font rendering survey.

JS

• We got a break on an EnterMethodJIT crash!
  • Users had been reporting crashes on Yahoo Mail Beta (bug 655660) and others.
  • David Anderson was able to reproduce the crash and fix it.
  • The bug was a too-small bitfield holding patch locations for ICs that could grow very large.
  • This bug might be a good fraction of the EnterMethodJIT crashes we get.

• We’re starting work on GC topcrashes
  • Bill McCloskey is finishing a new Breakpad feature to snapshot stack traces at desired points (e.g., when GC runs) and put them in minidumps: bug 662646.
  • Figuring out these crashes will take a while–we’ll need to experiment with different measurements and analyze data over time.

Layout

• text-overflow landed! Includes text-overflow:ellipsis and text-overflow:<string> and text-overflow:<left> <right>! Handles all sorts of edge cases other browsers don’t reach! (bug 312156)
• Looks like Jonathan Kew got a 6% Tp win on MacOS 10.6 using some new font APIs
• Zzzzz

Plugins

DOM

• DOM memory reporting starting to shape up, bug 663271 (Mounir)

Network

Accessibility

Multi-Process

• Initial landing of ifdefs almost complete.
• Initial dynamic analysis of chrome-content interactions up for review.
• Bugs for multiple content processes posted, see bug 641683 for details.

Tree Management

• disable tp4 (except for older release branches)
  • tp5 catches the same regressions and has been running side-by-side it for almost two weeks on all branches
  • this was announced last week on this meeting and through mailing lists
  • everything is ready to disable it on this Thursday
  • please read more about it on this blog post

• Turning off Firefox 3.5 automation this week.
  • http://oduinn.com/blog/2011/06/27/stopping-firefox-3-5/
  • bug 666407

Stability Report

• Trunk crashes have been a bit wild
• List for yesterday – https://crash-analysis.mozilla.com/chofmann/20110627/top-7.0a1.html
• Top Crash on the trunk is now fixed: bug 666751
• New regressions on the trunk:
  • bug 667624
  • bug 667618
• Spike in plugin crashes on the trunk on 2011-06-25: https://crash-analysis.mozilla.com/chofmann/20110626/top-plugin-crashes-7.0a1.html. Needs some investigation.
• bug 665775 should alleviate some of the datamngr.dll crashes which affect all versions (#19 top non plugin crash on Firefox 5 currently)
• If you want to discuss crashes more, come to CrashKill on Monday.

Roundtable

• Telemetry is on, start adding probes: https://blog.mozilla.org/tglek/2011/06/22/developers-how-to-submit-telemetry-data/
  • It’s easy! It can take as little as 10 minutes!
  • If you’re not sure whether a new probe would introduce privacy problems, ask Asa (who will check with legal & privacy teams).
• MSVC 2010 Migration: http://blog.kylehuey.com/post/7015378885/migrating-to-msvc-2010 – followup to .platform
  • Means dropping support for Win2000 and WinXP-before-SP2
• Aurora is next week, time for features-of-note! Please mail [email protected] if you have new developer or platform features, new developer tools or performance improvements of platform changes worth noting in our public communications or records.
• WebGL Security Discussion