This patch uses the low memory resource notification facility to detect
scenarios where physical memory is running low without polling. This is a
significant change compared to the previous behavior which measured both
available virtual memory (only on 32-bit builds) and available commit space.
Since we're not trying to avoid OOMs anymore we don't save memory reports
anymore when hitting a low-memory condition.
Differential Revision: https://phabricator.services.mozilla.com/D50471
--HG--
extra : moz-landing-system : lando
The problem is that a GC can be triggered in a number of ways, so scheduling zones in nsJSContext::GarbageCollectNow is not effective. This patch schedules these zones in the GC callback, which is always called at the start of GC. This means we have to change the internal logic slightly to allow the GC callback to schedule addional zones; previously this state was saved and restored before/after running the callback.
Differential Revision: https://phabricator.services.mozilla.com/D51145
--HG--
extra : moz-landing-system : lando
Small changes:
- Ordered #includes.
- Fixed some comments (obsolete remarks, or typos).
- Set `nsMainThreadPtrHolder::mRawPtr` from constructor initializers.
- Modernized `nsMainThreadPtrHolder` copy-prevention.
- Default-initialize `nsMainThreadPtrHolder` members, for extra safety.
- Made `nsMainThreadPtrHandle::get()` `const` (consistent with others).
- Moved nsMainThreadPtrHandle private member to the end.
- Removed now-unused `mozilla::PtrHolder` and `mozilla::PtrHandle` aliases.
Differential Revision: https://phabricator.services.mozilla.com/D51056
--HG--
extra : moz-landing-system : lando
Put them behind a MOZ_HASH_TABLE_CHECKS_ENABLED define, which right now is only
defined in DEBUG builds, preserving behavior.
MakeImmutable becomes an empty inline function when disabled, which should be
zero-cost.
Differential Revision: https://phabricator.services.mozilla.com/D50493
--HG--
extra : moz-landing-system : lando
Default constructors of members run if not specified there, and these ifdefs
are ugly.
Differential Revision: https://phabricator.services.mozilla.com/D50492
--HG--
extra : moz-landing-system : lando
I want to maybe enable some of these checks in DIAGNOSTIC_ASSERT builds.
The whole type is compiled out in release builds at the moment.
Differential Revision: https://phabricator.services.mozilla.com/D50491
--HG--
extra : moz-landing-system : lando
This replaces a direct call of an object's finalizer with a more formal API. This adds some assertions and passes a valid FreeOp pointer to the finalizer rather than null.
Differential Revision: https://phabricator.services.mozilla.com/D50571
--HG--
extra : moz-landing-system : lando
This renames the JSStringFinalizer struct to JSExternalStringCallbacks,
makes it a virtual class, and adds a size-of callback to it (to replace
the per-runtime callback).
This will make it possible to implement this callback easily for the
NewExternalString testing function (which we want for bug 1590641)
without having to move this testing function to shell/js.cpp
Differential Revision: https://phabricator.services.mozilla.com/D50234
--HG--
extra : moz-landing-system : lando
We could try to move the EnforcePendingTaskGuarantee() bit into
PeekIdleDeadline, but then we'd need to check HasReadyEvent() on
mDeferredTimersQueue and mIdleQueue before we possibly unlock the mutex under
PeekIdleDeadline, and it's not clear that that state cannot change once the
mutex is unlocked...
The EnsureIsActive() call at the end of GetIdleDeadlineInternal in the !aIsPeek
case only makes sense if there are in fact idle tasks available to run when
GetDeadlineForIdleTask is called, because otherwise it would incorrectly set us
active when we are not running any tasks.
Differential Revision: https://phabricator.services.mozilla.com/D49696
--HG--
rename : xpcom/threads/PrioritizedEventQueue.cpp => xpcom/threads/IdlePeriodState.cpp
rename : xpcom/threads/PrioritizedEventQueue.h => xpcom/threads/IdlePeriodState.h
extra : moz-landing-system : lando
Today I reviewed wrong usage of this API.
It'd be good if it crashed in debug builds when misused.
Differential Revision: https://phabricator.services.mozilla.com/D49778
--HG--
extra : moz-landing-system : lando
We could try to move the EnforcePendingTaskGuarantee() bit into PeekIdleDeadline, but
then we'd need to check HasReadyEvent() on mDeferredTimersQueue and mIdleQueue
before we unlock the mutex and PeekIdleDeadline, and it's not clear that that
state cannot change once the mutex is unlocked...
The EnsureIsActive() call at the end of GetIdleDeadlineInternal in the !aIsPeek
case only makes sense if there are in fact idle tasks available to run when
GetDeadlineForIdleTask is called, because otherwise it would incorrectly set us
active when we are not running any tasks.
Differential Revision: https://phabricator.services.mozilla.com/D49696
--HG--
rename : xpcom/threads/PrioritizedEventQueue.cpp => xpcom/threads/IdlePeriodState.cpp
rename : xpcom/threads/PrioritizedEventQueue.h => xpcom/threads/IdlePeriodState.h
extra : moz-landing-system : lando
We want to remove flat strings (JSFlatString). With this patch we only expose
linear strings (JSLinearString) to API consumers.
This is very mechanical for the most part, because code typically only cares
about linear strings and not the null-termination aspect.
CTypes's Library.cpp has some Windows-specific code where we relied on null-terminated
strings. This patch adds JS_CopyStringCharsZ for that use case.
Differential Revision: https://phabricator.services.mozilla.com/D48314
--HG--
extra : moz-landing-system : lando
This method turned out to only be used for tracing wrapper cached things. The wrapper cache has its own way of implementing barriers and contains a raw JSObject pointer. Changing this trace method to take an nsWrapperCache pointer (effectively a JSObjct**) enforces correct use of Heap<T> for other TraceCallbacks callers.
Differential Revision: https://phabricator.services.mozilla.com/D48693
--HG--
extra : moz-landing-system : lando
This was disabled in Bug 1441558 because it broke the mingw-gcc build.
But it doesn't break the mingw-clang build, and we don't support mingw-gcc
anymore, so we can re-enable it.
Differential Revision: https://phabricator.services.mozilla.com/D48645
--HG--
extra : moz-landing-system : lando
Gurzau Raul
Gabriele Svelto
Jon Coppeard
Christoph Kerschbaumer
Andreea Pavel
Dragana Damjanovic
Razvan Maries
Gerald Squelart
Daniel Varga
Kirk Steuber
Boris Zbarsky
Emma Malysz
Martin Stransky
Emilio Cobos Álvarez
Jan de Mooij
Ehsan Akhgari
Alex Henrie
Mihai Alexandru Michis
Tim Nguyen
Narcis Beleuzu
Andrea Marchesini
Dorel Luca
ffxbld
Cosmin Sabou
Olli Pettay
Andrew Halberstadt
Tom Ritter
Ricky Stewart