The test case here does not check whether requesting restyles for empty
properties are skipped or not. It just checks that whether restyles happen or
not because there is no way to check each request for restyles yet.
MozReview-Commit-ID: I5XMYfCTYU8
--HG--
extra : rebase_source : 893aaaf2c47e05f37bce9913df4f14e3021f215a
We've observed some crashes derefing the callback pointer, which may be
occuring due to shutdown happening before init has setup the callback pointer.
MozReview-Commit-ID: JsOqfjejMVI
--HG--
extra : rebase_source : e175dd8556ad50316bc16232782e593eea3e2ec8
GeckoMediaPluginService::mAbstractThread was not reset as expected from
ShutdownGMPThread, meaning it would retain a reference to the GMP thread, and
it would allow dispatch attempts to the GMP thread after shutdown.
Also mAbstractThread was not protected by a mutex (as mGMPThread was), which is
definitely needed now that it can be reset at shutdown time.
As its prefix implies, GetAbstractThread could return a nullptr, so it should
be checked before every use.
Note that this GetAbstractThread call (and its check) has been moved closer to
the start of functions using it, to avoid unnecessary and potentially invariant-
breaking partial work to take place when we can know in advance that it won't
fully succeed because the GMP thread is not available.
MozReview-Commit-ID: B1drOeM65hr
--HG--
extra : rebase_source : 1d389c663e26a25035bf2aa22b2cca478ef954fe
This follows a spec change <https://github.com/whatwg/html/issues/293>,
which AFAIK no other browser has implemented, so it has some regression
potential.
The web-platform tests changed are out-of-date and match the old spec,
so I'm changing them here to match the new spec.
nsDeviceContextSpecWin::GetDataFromPrinter is only called with print settings, when the settings aren't properly populated in nsDeviceContextSpecWin::Init.
This only happens when printing silently and the print settings have last been populated with prefs.
We need to copy the final DEVMODE details back in case any were invalid from the prefs and have been overridden by the printer.
MozReview-Commit-ID: EuRTDZTSSJn
--HG--
extra : rebase_source : 338910cec62843a79333ca32e1be2e07fd7a9a11
There were two places run gAnimationsTests in
test_animation_performance_warning.html.
MozReview-Commit-ID: zrD5eMiDsy
--HG--
extra : rebase_source : 250f826daed4440725c0a28fdb1fcd84fd299402
This function will be used for the warning of small content as well.
MozReview-Commit-ID: EiUF9CgWGDA
--HG--
extra : rebase_source : 3b6daa713d889f5c51507d4c1f6fd6c51f1e7fb9
This was caused by http://hg.mozilla.org/mozilla-central/rev/167ceb965079 (bug 1194059). Before that changeset mIsAnimated meant "we currently have more than one frame". After that changeset mIsAnimated was replaced with HasAnimation(). HasAnimation() just looks at the metadata to see if the image is animated. That changeset had the effect of always detected if an image is animated during the metadata decode. Therefore during a full decode we always know the image is animated, even before we've decoded two or more frames.
The fix is to go back to using the actual current frame count to manage invalidations.
It was a cold Friday night in San Francisco. Earlier in the day, I
informed Chris AtLee that I was going to start focusing on improving
the efficiency of Firefox automation and asked him where the biggest
capacity issues were. He said "we're hurting most on Windows tests."
As I was casually drinking a barleywine (note to reader: barleywines
are serious beers - there's nothing casual about them), I found myself
tediously clicking through Treeherder looking at logs for Windows jobs,
looking for patterns and other oddities. As I was clicking through,
something stood out to me: the sheer number of reftest jobs. I
recalled a random project I started a few years ago. Its aim was to
analyze buildbot job metadata so we could better understand where time
was spent in automation. I had mostly written off the side project as
a failure and a near complete waste of my time. Not even a stray
random thought of this project had entered my mind in the past year.
But clicking through Treeherder after a few glasses of barleywine
somehow reminded me of one of the few useful findings of that project:
reftest jobs consumed a seemingly disproportiate amount of machine time,
something like 35 or 40% IIRC of the time spent on all jobs.
Now, this finding was several years ago and almost certainly no longer
relevant. But, again, I had a few glasses of barleywine in me and was
bothered by the amount of reftest jobs and their duration, so I thought
"hey, why don't I run reftests and see why they take so long." So I
built Firefox on Windows - the platform Chris AtLee said we're "hurting
most on."
I decided to start my very casual profiling session by recording a
`mach reftest` run using Sysinternals Process Monitor. To my surprise,
it yielded a very obvious and unexpected result: the Places SQLite
database was incurring a lot of I/O. On my i7-6700K Windows 10 desktop
with a high performance SSD, `mach reftest` yielded the following:
File Time #Events #Reads #Writes RBytes WBytes Path
198s 980,872 243,270 669,231 7,971,471,360 20,667,084,080 places.sqlite-wal
165s 645,853 222,407 367,775 7,287,701,820 14.071,529,472 places.sqlite
2s 377,121 1 0 32,768 0 places.sqlite-shm
The Places SQLite database accounts for 2,003,846 of the total of
3,547,527 system calls (56.49%) recorded by procmon during `mach
reftest` execution. This represents a staggering 49,997,786,732 of the
50,307,660,589 (99.38%) bytes of I/O recorded! Yes, that's 50 GB.
I reckon the reason the Places database accumulates so much I/O load
during reftests is because the reftest suite essentially loads thousands
of pages as quickly as possible. This effectively performs a stress
test against the Places history recording service.
As effective as reftests are at stress-testing Places, it adds no value
to reftests because reftests are testing the layout features, not the
performance of history recording. So these 2M system calls and 50 GB
of I/O are overhead.
This commit disables Places when executing reftests and prevents
the overhead.
After this commit, `mach reftest` has significantly reduced interaction
with the Places SQLite database:
File Time #Events #Reads #Writes RBytes WBytes Path
0.09s 502 138 302 4,521,984 8,961,528 places.sqlite-wal
0.07s 254 20 140 524,604 8,126,464 places.sqlite
0.01s 3,289 1 0 32,768 0 places.sqlite-shm
Of the 948,033 system calls recorded with this change (26.7% of
original), 691,322 were related to I/O. The Places SQLite database
only consumed ~22MB of I/O, <0.01% of original. It's worth noting that
~half of the remaining I/O system calls are related to reftest.log,
which now accounts for the largest percentage of write I/O (only
~53 MB, however). It's worth noting that reftest.log appears to be
using unbuffered writes and is requiring an excessive amount of
system calls for writing. But that's for another bug and commit.
In terms of wall time, the drastic I/O reduction during `mach reftest`
appears to have minimal impact on my machine: maybe 30s shaved from a
~900s execution, or ~3%. But my machine with its modern SSD doesn't
struggle with I/O.
In automation, it is a different story.
I pushed this change to Try along with the base revision and triggered
4 runs of most reftest jobs. The runtime improvements in automation
are impressive. Here are the fastest reported times for various jobs:
Job Before After Delta
Linux Opt R1 31m 34m +3m
Linux Opt R2 43m 35m -8m
Linux Opt Ru1 40m 34m -6m
Linux Opt Ru2 43m 37m -6m
Linux Opt R E10s 89m 72m -17m
Linux Debug R1 52m 40m -12m
Linux Debug R2 49m 42m -7m
Linux Debug R3 60m 51m -9m
Linux Debug R4 42m 37m -5m
Linux Debug R1 E10s 84m 72m -12m
Linux Debug R2 E10s 97m 85m -12m
Linux64 Opt R1 35m 24m -11m
Linux64 Opt R2 37m 26m -11m
Linux64 Opt Ru1 32m 29m -3m
Linux64 Opt Ru2 37m 26m -12m
Linux64 Opt TC R1 12m 10m -2m
Linux64 Opt TC R2 10m 7m -3m
Linux64 Opt TC R3 11m 9m -2m
Linux64 Opt TC R4 11m 9m -2m
Linux64 Opt TC R5 13m 11m -2m
Linux64 Opt TC R6 11m 9m -2m
Linux64 Opt TC R7 9m 8m -1m
Linux64 Opt TC R8 11m 10m -1m
Linux64 Opt TC Ru1 30m 25m -5m
Linux64 Opt TC Ru2 36m 27m -11m
OS X 10.10 Opt 31m 27m -4m
OS X 10.10 Opt E10s 26m 25m -1m
OS X 10.10 Debug 68m 55m -13m
Win7 Opt R 30m 28m -2m
Win7 Opt Ru 28m 26m -2m
Win7 Opt R E10S 29m 27m -2m
Win7 Debug R 85m 76m -9m
Win7 Debug R E10S 75m 65m -10m
Win8 x64 Opt R 29m 26m -3m
Win8 x64 Opt Ru 27m 25m -2m
Win8 x64 Debug R 90m 71m -19m
Android 4.3 API15 Opt R1 89m 71m -18m
Android 4.3 API15 Opt R2 78m 64m -14m
Android 4.3 API15 Opt R3 75m 64m -11m
Android 4.3 API15 Opt R4 74m 68m -6m
Android 4.3 API15 Opt R5 75m 69m -6m
Android 4.3 API15 Opt R6 91m 86m -5m
Android 4.3 API15 Opt R7 87m 66m -21m
Android 4.3 API15 Opt R8 87m 82m -5m
Android 4.3 API15 Opt R9 80m 66m -14m
Android 4.3 API15 Opt R10 80m 67m -13m
Android 4.3 API15 Opt R11 73m 66m -7m
Android 4.3 API15 Opt R12 105m 91m -14m
Android 4.3 API15 Opt R13 72m 59m -13m
Android 4.3 API15 Opt R14 82m 61m -21m
Android 4.3 API15 Opt R15 73m 62m -11m
Android 4.3 API15 Opt R16 79m 78m -1m
The savings total 6+ *hours* or ~15% when running all reftests. I'd
say this isn't bad for a one-line code change!
MozReview-Commit-ID: H1LkACgSpVn
--HG--
extra : rebase_source : 891a5ce8e1f6c3d70fc646f116c2f49f897ad735
The common base class is shared by APZCBasicTester and APZCTreeManagerTester,
and contains several of the functions previously in InputUtils.h.
MozReview-Commit-ID: 85ZRHc1dNQf
--HG--
extra : rebase_source : fe97b9774842944a9a7959350cc642e611b5a8b4
extra : amend_source : 2557604a92b478fbf44b7eaad6bfccfd4b4c8377
This commit adds `SharedImmutableStringsCache` which allows for de-duplication
and sharing of immutable strings between threads and JSRuntimes.
Each JSRuntime gets a SharedImmutableStringsCache member, but the accessor
always returns the parent runtime's cache. The caches in child JSRuntime's are
not wasting space, however, as initialization and allocation of the table
happens lazily within SharedImmutableStringsCache.
Furthermore, this commit removes `js::ScriptSource::Parent` and the
`CompressedSourceSet`. They are unnecessary because source text is always shared
via the parent runtime's `SharedImmutableStringsCache` now.
In bug 1264497 we discovered that Netflix was broken because we'd made a change
to not send the Adobe GMP the device bound nodeId, which it stored in GMP
storage. When the GMP was comparing the nodeId it had stored against what it was
passed (nothing) the comparison was failing. Users could have worked around this
problem by clearing their GMP storage, whereupon the Adobe GMP will have stored
"nothing" as its nodeId.
When bug 1264497 was fixed, users who'd cleared their storage will see Netflix
fail again, as their stored nodeId of "nothing" will again not match what we
pass in. So to fix Netflix for these users, we need to clear GMP storage.
This is another instance of a more general problem that we have occasionally
encountered, namely that sometimes GMP storage becomes incompatible, and we
need to clear it. Having a general mechanism that we can use to clear storage
remotely will be helpful, so this patch adds one, and triggers it to fire.
This mechanism is pref controlled, so that we can issue a hotfix if necessary
to clear GMP storage.
MozReview-Commit-ID: GzSyBj0P2JG
--HG--
extra : rebase_source : b854860ee533b0742a664c862278ce54c9052596
This allows use to be able restore the window size if we wanted to.
MozReview-Commit-ID: Kx3JH1UroI2
--HG--
extra : rebase_source : 1b41e6b488eee2b4cbbea1104323b5807890b368
