When memory-pressure events were first used in an e10s environment it was
to implement memory minimization from about:memory. However when low memory
detection was first introduced in Firefox OS an issue arised with this scheme:
every process was using a kernel-based low-latency mechanism to detect low
memory scenarios and send memory-pressure events; but the main process events
were also being forwarded to all child processes causing listeners to be
triggered twice. Because of this -no-forward events were introduced and used.
Currently however low-memory is detected via polling, so there will always be
a significant delay between the beginning of the low-memory scenario and its
detection. Because of this there is no value in having content processes poll
on their own and it's best to have only the main process do it and then
forward the memory-pressure events to all child processes.
MozReview-Commit-ID: AMQOsEgECme
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extra : rebase_source : 1b408b31dd27940981407f50f2e5f07e354b16d7
PerformanceCounters are currently disabled in two ways:
- a preference that's off by default "dom.performance.enable_scheduler_timing"
- calls made only for nightly using #ifndef RELEASE_OR_BETA
In order to simplify the code, let's remove the #ifndef and rely only on the pref.
That will also allows us to use the feature in every version going forward.
The performance will not be impacted since the current code is already using
the (cached) pref value to determine if the counters are used.
MozReview-Commit-ID: 47t2M1O13aH
--HG--
extra : rebase_source : e129e1829f1dc37c019e50e156474c4876d6d6cb
ProtocolName() is only used for producing error messages and annotating
crash reports. But examining actual crash reports that would have used
the result of ProtocolName() indicates that we can always tell what the
erroring protocol is due to the stack backtrace. So having this virtual
function around just provides duplicate information, and it takes up too
much space in the vtable besides. Let's get rid of it.
This is necessary to avoid web platform test failures for tests that rely on layout calculations occurring
inside a recently opened tab or window. Originally, the layout flush was happening "accidentally" within
the StatusPanel that displays loading status for the browser. That flush is being removed in another patch
in this series.
MozReview-Commit-ID: IUxiBS9CDRY
--HG--
extra : rebase_source : 1174290fc6fa8da68bfe383e79daa417bbb8de39
This patch reverts parts of changeset e87e706def11 (bug 1425031).
The problem in bug 1425031 was that when the content process set a cookie
a notification was sent to the parent process. This notification was then
forwarded to all the content processes, including the one it originated from.
The solution was to not forward cookies that originated from a content
process, but this causes the current bug.
The correct fix is to forward the cookie changes to all content processes
except the one they originated from.
The test for bug 1425031 remains, and should keep passing.
MozReview-Commit-ID: 1P6JwHQDy93
--HG--
extra : rebase_source : 85845c93059004836e14d5a46f2df881237fad6e
Bogdan Tara
Andrea Marchesini
Narcis Beleuzu
Cosmin Sabou
Jan de Mooij
Makoto Kato
Gabriele Svelto
Adrian Wielgosik
Stephen A Pohl
Csoregi Natalia
Jan-Erik Rediger
Ciure Andrei
Alex Gaynor
Boris Zbarsky
shindli
Kartikaya Gupta
Jonathan Kew
Alexandre Poirot
Tarek Ziadé
Nathan Froyd
Dorel Luca
Mike Conley
Dão Gottwald
Valentin Gosu
Steve Fink