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Engineering Meeting Details

  • Tuesday 2014-01-07 - 11:00 am Pacific Standard Time
  • Dial-in: Audio-only conference# 98411
    • People with Mozilla phones or softphones please dial x4000 Conf# 98411
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    • UK/London: +44 (0)207 855 3000, x4000 Conf# 98411
    • FR/Paris: +33 1 84 88 37 37, x4000 Conf# 98411
    • Gmail Chat (requires Flash and the Google Talk plugin): paste +1 650 903 0800 into the Gmail Chat box that doesn't look like it accepts phone numbers
    • SkypeOut is free if you use the 800 number
  • Engineering Vidyo Room / Air Mozilla / MTV Warp Core / TOR Finch / SFO Warfield / PDX Widmer
  • join #planning for back channel


Hot Bugs

(Important bugs for which we need to find owners or additional help. If known, please include suggested team or knowledge needed to advance the bug.)

Orange Factor

The Need To Know

(Release and system issues that may impact engineering this week.)

Notices/Schedule (akeybl/lsblakk/bajaj)

Next Merge: July 8, 2024 Next Release: July 9, 2024
Central: 129 Aurora: 54 Beta: 128 Release:
  1. REDIRECT Template:Version/Gecko/release/current

  • FF27.0b4 for Desktop and Mobile have gone to build yesterday and is with QA
12 bugs (?? bugs last week)
41 bugs (?? bugs last week)
Unresolved Aurora 54 Trackers (non-security, not tracked for Beta) Unresolved Beta 128 Trackers (non-security)

Build Changes (gps)

(Build changes of which engineers should be aware.)

RelEng (catlee)

(Repo, test, and other information for engineers from the release engineering team.)

Upcoming Outages/Upgrades

(System outages/upgrades and tree closures that impact engineering.)

  • Tree closing window this Saturday 0900 - 1500 PST. bug 951731
    • During this time the tegras will be moved from the Mountain View office into a data center, and will be unavailable until Monday 0900 at the latest. bug 914480
    • Panda testing will be online when TCW ends. (Test servers they use are part of the move.)
  • Tegras will remain offline (and android jobs cancelled) longer, possibly through the weekend. Our goal is no more than 48 hours offline, with a stretch goal of back online before 1600PT Sunday (just as Taipei starts).

Team Stand-ups

(In <2 mins, what did your team accomplish last week, on what is your team working on this week, and on what, if anything, is your team blocked? No questions during the stand-ups. All questions should be asked during the roundtable.)

Accessibility (dbolter)

  • No update.

Add-on SDK (dtownsend)

App Tools (dtownsend)

B2G Services (dougt)

Developer Tools (robcee)

<Read Only>


DOM (jst)

  • ICC landed (bug IncrementalCC), flip dom.cycle_collector.incremental to true to test. (:mccr8)

Firefox Desktop (gavin)

Firefox Metro (bbondy/jmathies/mbrubeck)

Firefox Mobile (mfinkle/blassey)

<Read Only>

  • Lot's of righteous progress for sync (must have for Fx29)since we last met and over the holidays (you can create a sync account with FxA API in Nightly. Landings not limited to: bug 918012, bug 899217, bug 951883, bug 952789, bug 951569, bug 956443
  • We are converging on Action Bar for Text Selection for Fx28 (see wesj's blog post in good reads, below): bug 768667 - Use the action bar for text selection on ICS+

Firefox OS Communications (scravag)

<Read Only>

Only small update today.

  • Comms 1.3? : 23
  • Comms 1.3+ : 37

Firefox OS Devices/Porting (mchen)

<Read Only>


  • bug 943278 - (gonk-kk) kitkat Gonk Support (Android 4.4)
    • Stage 1 (until 2014/01/10):
      • Enable GonkDisplay for KK version.
      • Enable config/build system for building Gonk-kk image but disable modules first.



  • bug 904177 - Apply asynchronous model into decoding architecture (using MediaCodec)
  • bug 942078 - Video thumbnail generation rule (discussion via Web-API mail list)
  • bug 932701 - Keep the priority & nice value of threads related to media playback to equal or higher then foreground app (study phase)
  • Bugs: bug 940177, bug 952893


Firefox OS Media Apps (hema)

<Read Only>

No update. Focusing on 1.3 bugs and planning for 1.4

Firefox OS Media Recording (cjku)

<Read Only>

  • bug 950567 - [MediaEncoder] phase-in libmkv library
  • bug 920934 - [MediaEncoder] Implement AudioOmxEncoder on B2G
  • bug 951997 - [gUM on B2G] Create content sandbox permission prompt test
  • bug 878577 - [Memory shrink on B2G] Provide a hard limit for decoded image buffer

Firefox OS Performance (mlee)

<Read Only>

Firefox OS Productivity (doliver)

<Read Only>

  • No update this week -- finishing up 1.3 blocking bugs to clear the decks for 1.4 work to begin Jan 20.

Firefox OS Telephony/WIFI/NFC (kenhkchang)

<Read Only>

  • Last week
    • To fix V1.3 bugs.
    • RTSP Client, to fix the crash problem, device is crashed when reconnect.
    • NFC, to discuss the payment architecture with partner.
    • LTE, to study which RIL interfaces we need for LTE.
    • WPA-EAP, to import Cert by WifiManager.
    • WIFI-Direct, to add test cases.
    • Power metering, to sync the webapi between powermetering and network metering.
    • Network metering, to obtain network tethering statistics.
  • This week
    • To fix V1.3 bugs.
    • RTSP Client, to fix the crash problem, device is crashed when connection is via NAT.
    • NFC, to rewrite NFC worker in C++.
    • LTE, to study which RIL interfaces we need for LTE.
    • WPA-EAP, to import Cert by WifiManager.
    • WIFI-Display, to do porting for libstagefright_wfd.
    • Power metering, to get Wi-Fi link speed.
    • Network metering, to obtain network tethering statistics.

Firefox OS Systems - Front End (gwagner)

  • Continue working on universal search feature Rocketbar. Landed on Master: Check it out by enabling it in the developer options. Rocketbar is Awesomebar + local app search + results for v1 and additional search results like contacts, email for next versions.
  • 1.3 Blockers (Download Manager, Offline experience)

Firefox OS Systems - Platform (timdream)

<Read Only>

  • 3rd-party keyboard support: Keyboard OOP already enabled on master, another blocker, bug 953044, keeping keyboard from being resumed from OOM have been resolved. Next: stabilization and marionetteJS test bug 947120 wait for reviewing. pref measurement on going bug 950562
  • lock screen: trying to solve the performance issue occurs while unlocking bug 938737, and the bug of incompatible sharing component between normal and incoming call lockscreen bug 956662.
  • Built-in keyboard update & dynamic touch target: no update
  • Cursor management: no update
  • Dual SIM Dual Standby: There are eight DSDS 1.3 blockers. Five of them are gaia bugs. bug 944230. Airplane mode related works : bug 948847, bug 945147, bug 946588 SimManager rename method bug 932729
  • EAP SIM: No updste. follow-up on 1.4: EAP SIM for Dual SIM
  • PEAP, TLS, TTLS WPA-EAP: No update on Gaia part (work has been done since)
  • Format SD Card: halt
  • CDMA: one last blocker bug 909266 to be landed in days
  • NFC: no update
  • Gaia build script: added unit/integration test for build system, added a macro for running build scripts on node.js (meta bug 955988) and working on app manager and gaia-build integration.
  • window management: 1) move attention screen animation to System - Rex had a patch for dialer, I will provide patch for system this week. 2) pop-up window rewrite.
  • System App Modularization: working on a draft plan
  • Gecko Profiler GUI For Task Tracer: WIP, see
  • Setting panel isolation: working on int. test coverage first before working on the new app
  • Engineering mode: Helping volunteer complete web activity API test cases to uitest, found sms activity issue in 1.4. Evaluating issues on vendor utilization.
  • Test coverage report: working on getting it on Travis-CI
  • Gaia Audio Channel Service: in discussion

Read more at:

GFX (milan)

<Read Only>

  • GL fence Firefox OS on JB 4.3
  • APZC finishing touches on Firefox OS
  • Firefox OS performance, including Flatfish
  • Getting rid of deprecated textures

Identity (jedp)

Firefox Accounts (FxA) and Sync on Desktop (ckarlof lead)

FxA on FxOS 1.4 (spenrose lead)

Brian Warner to present FxA + Sync at RealWorldCrypto in NY next monday (weather permitting)

  • Run-through of his talk in warner's vidyo, this thursday, 5pm-530pm PST

JS (naveed)

<Read Only>

    • Compiler (JIT)
      • (bug 952992 - Remove MPrepareCall/MPassArg instructions. A lot of cleanup and allowed bz to do cool stuff with DOM calls
      • (bug 922681 - SetInnerHTML fast path for strings with no markup.
      • (bug 951528 - Fix fallout from compiling JSOP_SETARG in presence of "arguments" references.
    • Garbage Collection
      • We now are at 1 hazard, and have an r+ patch to get us to 0 reported hazards for the desktop browser!
      • (bug 950176 - now we use mangled names for most of the analysis (the exceptions are when we want to use human-readable strings for annotations and constructor/destructor matching)
    • Front End and Other
      • (bug 886193 - Lots of more work on function re-lazification.
      • (bug 911147 - implement Array#fill
      • (bug 896105 - implemented ArrayBuffer.isView
      • (bug 946042 - reviewed final version of SIMD interpreter support patch

Layout (jet/dbaron)

Media (mreavy)

No updates

Necko (dougt/jduell)

  • HTTP/2:
    • we should be landing draft-8 this week. Working on draft 9 implementation
      • httpd.js is also up to draft 8/9 so we've got test coverage.
      • Akamai may also use our implementation for testing.
    • completed DNS experiment to see if SRV records usable to detect if http:// targets can speak HTTP/2: results seem promising.
  • New HTTP cache. Still on schedule for mid-february m-c landing.
    • Crash-recoverable cache index has landed on gum branch. Needs debugging.
    • Patches in progress for last major feature: eviction.

Performance (vladan)

Seceng (grobinson)

  • Landed bug 713980: Logging blocked cross-site requests to the Web Console. This was a long-standing bug with a lot of requests for completion from web devs.
  • Landed bug 951895: fixes the SpecialPowers message manager in the B2G test harness. If you have tests that are broken/disabled on B2G (testing/mochitest/b2g.json) that use the Message Manager in some way, they might work now...

Shumway (mbx)

No update this week.

WebAPI (overholt)

  • console object coming soon to workers (bug 620935) (baku)
  • postMessage to targetOrigin (bug 949488) (baku)
  • work continues on async IDB in workers (bent, baku)
  • firming up rest of Q1 goals

Quality Programs

(An opportunity to hear about status with the various quality programs that do not have a formal team structure.)

CritSmash (dbolter)

MemShrink (njn)

B2G now has system-wide memory reporting. This is intended to supplant top, ps, procrank, and all the other ways of getting OS-level memory measurements. Please file bugs if you have ideas for extra stuff it should measure.

Paul Adenot fixed a terrible web audio memory leak.

OrangeFactor (ryanvm)

  • Past week's OrangeFactor: 7.51 (Previous Week: 7.74).
  • 10 intermittent failures fixed in the last week - List - Thanks!.

Stability (kairo/bsmedberg)

  • Overall numbers are OK, but tendencies for 27 beta and for 26 on Android point in the wrong direction (while 26 desktop shows improvements). We hope to have a few fixes in 27 beta 4, but we need to work on improvements for Android in the longer run. KaiRo is emailing Android stakeholders on that.
  • On Firefox OS, we found that some phones were released (again) with crash reporting disabled, we also need to follow up on that.


(Comments and questions that arise during the course of the meeting or otherwise do not have a section.)

<Read only beyond this point>

Friends of the Tree

There were great changes by volunteers in Core and Toolkit during the past week. Thanks to all of these contributors for their passion and hard work! Here are some highlights:

Mailing List Threads

(Threads that are likely to be of interest to engineering from various mailing lists.)

Good Reads

(Links to blog posts, books, videos, etc. that you think will be of interest to others.)

Mail filters for mentored bugs

irc #planning Log From This Meeting

13:59 lmandel:
14:08 lmandel: KaiRo, bsmedberg: Stability update?
14:08 bsmedberg: I don't have one
14:09 KaiRo: lmandel: I have a short update
14:09 lmandel: Any roundtable items?
14:11 bajaj: KaiRo: elan: crashes tracked for Firefox 27
14:11 bajaj: KaiRo: elan : I am following up on those, help would be great :)
14:12 elan: bajaj: you got it
14:12 elan: also, we've got action bar for text selection fixes which will need to land and be uplifted
14:12 elan: I've requested a freeze for those changes by 01/24
14:13 elan: bajaj: ^
14:13 elan: (for aurora)