This adds a new --experimental-value-unavailable flag, which is disabled
for now. When enabled the debugger reports values that are optimized out
by TurboFan and values of certain variables in Temporal Dead Zones (TDZ)
as unavailable. Internally we use a special `value_unavailable` accessor
info to represent these values, and on the debugger boundary we report
these properties with `value`, `get`, or `set`.
Doc: https://goo.gle/devtools-value-unavailable
Bug: chromium:1328681
Demo: devtools-dbg-stories.netlify.app/crbug-1328681-value-unavailable
Change-Id: Idb09a4a148335a950deae60f7c07caecc48826ba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3627510
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81509}
This CL fixes an issue with async stacks. The async task stack is not
torn down between page navigations or reloads. The result is that
any new async tasks are stacked on top of the old pages async task
stack.
This was not prominent until now for two reasons:
1) Async tasks created in blink are always finished as long as
destructors have time to run.
2) When V8 is terminated while running the micro task queue also
all async tasks created for Promises (including `await`) are
cleaned up properly.
Introducing the stack tagging API made it more common for having
unfinished async tasks open outside the MTQ, which left the
async task stack non-empty during navigation.
This CL fixes this problem by clearing out all the async task
and async stack data structures for a context group when that
context group is reset.
R=bmeurer@chromium.org, victorporof@chromium.org
Fixed: chromium:1328785
Change-Id: Iee0c3c4a55f66e643829dae3726dc03c735da1dd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3666620
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80741}
This CL fixes a wrong assumption in the LiveEdit machinery. Namely
the assumption that every FunctionLiteral the parser finds, will have
a corresponding SFI created by the compiler. This assumption does not
hold in all cases. Inner functions that are never referenced by the
outer function don't get an SFI.
R=bmeurer@chromium.org
Fixed: chromium:1328453
Change-Id: I674f023f948954c1fcae04a4aa2afb69ea1642aa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3663443
Commit-Queue: Simon Zünd <szuend@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80735}
Doc: https://bit.ly/revive-restart-frame
Context: https://crrev.com/c/3582395 (whole feature)
This CL adds a new optional flag `canBeRestarted` to every call frame
in Debugger.paused events. As the name suggests, the flag indicates
whether we can restart a particular frame through Debugger.restartFrame
once implemented.
We are not able to safely restart all frames:
* We don't support WASM frames
* We don't support frames where resumable functions (async fns,
generators) and embedder C++ frames are between the top-most
frame and the to-be-restarted frame.
Note that from a CDP perspective the flag doesn't actually guarantee
a successful restart. CDP clients can issue
CDP commands between the Debugger.paused event and before a user
decides to restart a frame, which can potentially mess
with the stack.
The `canBeRestarted` flag tests are folded into the
Debugger.restartFrame tests. As the feature is not yet fully
implemented we short-circuit most of the tests for now and only
run them up until the first Debugger.restartFrame call fails
(except "fails-for-resumables.js").
This means the tests exercise the `canBeRestarted` flag, but not
the restarting functionality itself.
R=bmeurer@chromium.org, kimanh@chromium.org
Bug: chromium:1303521
Change-Id: I01ab46dc3557ab8383960969fbe03e00604cc5e2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3596160
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80046}
Doc: https://bit.ly/revive-restart-frame
Context: https://crrev.com/c/3582395 (whole feature)
This CL adds the second batch of inspector tests for the upcoming
"Restart frame" feature. Landing the tests upfront allows us to
better discuss the proposed API as well as think early about
corner cases we should test.
The tests check for the functionality of `Debugger.restartFrame`, as
well as the newly added parameter `canBeRestarted` in
the `Debugger.paused` event.
Bug: chromium:1303521
Change-Id: Ie9dda100cdc5217a4e4cc2f0cf7019a33d124120
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585947
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80037}
Doc: https://bit.ly/revive-restart-frame
Context: https://crrev.com/c/3582395 (whole feature)
This CL adds the first batch of inspector tests for the upcoming
"Restart frame" feature. Landing the tests upfront allows us to
better discuss the proposed API as well as think early about
corner cases we should test.
The tests check for the functionality of `Debugger.restartFrame`, as
well as the newly added parameter `canBeRestarted` in
the `Debugger.paused` event.
Bug: chromium:1303521
Change-Id: Ibda6d8b6110fce893e0844f8902fbd5d901ae01d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585946
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80013}
A test was overflowing on the progress counter when using int as type.
This CL is fixing the progress counter to use uint32_t, and re-enables
the test.
Why uint32_t instead of size_t?
In the referenced bug, the progress_counter_ (but not the
progress_total_) triggered an overflow; and since these two counters
should be relatively similar (the total count is an estimate, and can
be less than the actual progress count), we do not expect the
count to increase much more than we can already encode with int.
Bug: chromium:1246860
Change-Id: I9769884ef60d352b3787c2223e528ddf33b0b23e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3245116
Commit-Queue: Kim-Anh Tran <kimanh@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77551}
EphemeronHashTable does not trigger interrupts when accessed
(as opposed to calling the WeakMapGet builtin), so it avoids
the use-after-free problem when reading exception metadata
triggers session disconnect while holding a reference
to the session.
Bug: chromium:1241860
Change-Id: I29264b04b8daf682e7c33a97faedf50e323d57c4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3158326
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76864}
Bug: v8:12008
Change-Id: I2e1d918a1370dae1e15919fbf02d69cbe48f63bf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3089095
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76308}
This reverts commit a4a152ecc5.
Reason for revert: We haven't seen the flakes in a while, we can re-enable functionality
Original change's description:
> Reland "[debugger] Try to trigger pause-on-oom flakes with an extra printf"
>
> This is a reland of 8f7e915839
>
> Original change's description:
> > [debugger] Try to trigger pause-on-oom flakes with an extra printf
> >
> > We have an issue that we can't repro locally. Enable back the
> > pause-on-oom tests with an extra printf with DEBUG. We will be able to
> > better assess the failures when they appear on the bot.
> >
> > Bug: v8:10876
> > Change-Id: I066539c4b5865ecb6f2e589e9543e8c9ebd4830b
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2474782
> > Reviewed-by: Peter Marshall <petermarshall@chromium.org>
> > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> > Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#70558}
>
> Bug: v8:10876
> Change-Id: Ice31c9455830da320ab057293c341f69e1f0c510
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2484799
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Peter Marshall <petermarshall@chromium.org>
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#70643}
Bug: v8:10876
Change-Id: I901d31e1e92bfef0b2917ea611354618e5cda585
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3071404
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76302}
This reverts commit 91c8be9599.
RCS should not be exposed through the API or the inspector protocol as
they are meant as an internal debugging feature.
The only regularly tested and supported way is through chrome-tracing.
Given that this was used mostly for an experiment to analyse chrome's
performance, we can use pprof support as a replacement.
Original change's description:
> [DevTools] Implemented DevTools protocol API to retrieve V8 RunTime Call Stats.
>
> The new APIs are:
> enableRuntimeCallStats
> disableRuntimeCallStats
> getRuntimeCallStats
>
> The RunTime Call Stats are collected per isolate.
>
> Change-Id: I7e520e2c866288aa9f9dc74f12572abedf0d3ac8
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1881601
> Commit-Queue: Peter Kvitek <kvitekp@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#64784}
Change-Id: Ia7575436e97d3420dd7e68414d89477e6a86bb05
Bug: v8:11395
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2998585
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76297}
pthread_rwlock_t can deadlock on Mac if signals are sent to the process
in the wrong moment. Since we use processes e.g. for sampling profiling
(in both d8 and in Chrome), we hence cannot safely use pthread_rwlock_t
on Mac. Instead, fall back to a non-shared pthread_mutex_t.
Interestingly, this shows no measurable performance impact in Wasm
compilation on my MBP.
R=mlippautz@chromium.org
Bug: v8:11399
Change-Id: Ie8bfd5288bba8c4f3315ee4502b39b59d39c9bbd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3060480
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76015}
The test currently fails on machines with sparkplug enabled:
```
Flag --sparkplug: value implied by --jitless conflicts
with explicit specification
```
And passes on platform without sparkplug.
Bug: chromium:1233401
Change-Id: Ia0277f8d356e34efb611ca9960c11ec78b9b94ae
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3058300
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Junliang Yan <junyan@redhat.com>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75970}
This reverts commit 67960ba110.
Reason for revert:
This has been properly fixed by https://crrev.com/c/3053740.
Now dcheck_always_on already defaults to false for subprojects
like V8 and no other switch is required. The switch didn't fully
work anyways due to https://crbug.com/1231890.
Original change's description:
> Reland "[build] Add V8-specific dcheck_always_on"
>
> This is a reland of cecc666f4d
>
> Depends on:
> https://crrev.com/c/3043611
>
> Original change's description:
> > [build] Add V8-specific dcheck_always_on
> >
> > This makes the V8 dcheck control independent of Chromium's and
> > prepares switching Chromium's default behavior without affecting V8
> > developers or builders.
> >
> > Preparation for: https://crrev.com/c/2893204
> >
> > Bug: chromium:1225701
> > Change-Id: I520b96019b04196f4420716ff3500ebd6c21666f
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3038528
> > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> > Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#75827}
>
> Bug: chromium:1225701
> Change-Id: I56568b78592addba01793d2d14f768c9ee10103d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3041670
> Reviewed-by: Liviu Rau <liviurau@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75839}
Bug: chromium:1225701, chromium:1231890
Change-Id: I7e27f5774d8e162977f30f685da4b15dadcc1084
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3055294
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75935}
This makes the V8 dcheck control independent of Chromium's and
prepares switching Chromium's default behavior without affecting V8
developers or builders.
Preparation for: https://crrev.com/c/2893204
Bug: chromium:1225701
Change-Id: I520b96019b04196f4420716ff3500ebd6c21666f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3038528
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75827}
This CL skips some recently added tests that do not work for TPH at the moment,
including:
* One uses --concurrent_inlining
* One Requires local heaps
* 7 tests that create multiple isplates
* 3 LogMaps* tests that is expected to fail due to map address reuse
This CL also set v8_enable_allocation_folding = true for TPH.
Bug: v8:11641
Change-Id: I5db32f5f9e730dc4e12e4869ec78210bde23ca0d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2994219
Commit-Queue: Wenyu Zhao <wenyu.zhao@anu.edu.au>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Wenyu Zhao <wenyu.zhao@anu.edu.au>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75432}
The test was a bit out-dated, the expected file did not match the test
or the data delivered by V8 anymore. However, all the expected data was
available, so I just adjusted the test accordingly.
R=clemensb@chromium.org
Bug: v8:10356
Change-Id: I1d94f2a295038a4320e07706d46258a278a6dee5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2968410
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75222}
* Skip 8 tests that timeout due to the low-performance of current MMTk non-moving GC.
- This will be enabled after TPH performance issues are addressed.
* Skip 2 new tests that creates a second isolate -- TPH does not support it at the moment.
* Skip 1 test that expects concurrent sweeping behavior of cppgc.
Bug: v8:11641
Change-Id: If86cdcc303b01536d278368886bb30d91da5c5c1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2909692
Auto-Submit: Wenyu Zhao <wenyu.zhao@anu.edu.au>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75036}
This adds a new status file indicator "HEAVY" to mark tests with high
resource demands. There will be other tests running in parallel,
but only a limited number of other heavy tests. The limit is
controlled with a new parameter --max-heavy-tests and defaults to 1.
The change also marks a variety of tests as heavy that recently had
flaky timeouts. Heavy also implies slow, hence heavy tests are
executed at the beginning with a higher timeout like other slow tests.
The implementation is encapsulated in the test-processor chain. A
new processor buffers heavy tests in a queue and adds buffered tests
only if other heavy tests have ended their computation.
Bug: v8:5861
Change-Id: I89648ad0030271a3a5af588ecc9c43285b728d6d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2905767
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74712}
This CL fixes a failed DCHECK due to incorrect heap capacity.
Also skips three new tests that create multiple isolates.
Bug: v8:11641
Change-Id: I1061b3370efbe2b272bd490705fc728d6bb26910
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2896644
Auto-Submit: Wenyu Zhao <wenyu.zhao@anu.edu.au>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74583}
wasm-scope-info requires SIMD, since it prints the value of the SIMD
value in scope. We skip it using statusfile when SIMD is not supported.
Change-Id: Id64e130a1c497bae95ec5e794ad05816f8c908e7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2893568
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74573}
* Set v8_enable_pointer_compression_shared_cage = false for TPH.
* Skip three more tests that creates multiple isolates (which is not supported by TPH at the moment).
Bug: v8:11641
Change-Id: Iefec0ea3e2ed51e8973546441f5daaa2ac02ab57
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2881510
Auto-Submit: Wenyu Zhao <wenyu.zhao@anu.edu.au>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74460}
The "Restart frame" feature was implemented as part of LiveEdit and
primarily used to support LiveEdit of active functions, but that was
previously disabled as part of https://crrev.com/c/2846892 because it's
too brittle and causes crashes when using seemingly unrelated features.
The "Restart frame" feature was also available as a context menu item
separately in the DevTools front-end, but that was also already removed
as part of https://crrev.com/c/2854681 earlier. So all uses are gone
now.
This change works by marking Debugger.restartFrame as deprecated and
having it respond with a ServerError all the time. It thus allows us to
remove a whole bunch of machinery that was essentially just put in
various places to support the restart_fp_ magic. In particular the
debugger no longer needs any machine specific builtins now.
Bug: chromium:1195927
Change-Id: I1153ba6b00e979620af57dd9f58aa1c035ec4484
Fixed: chromium:1203606
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2854750
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74276}
Previously we'd allow to replace the source of functions that are on the
current execution stack under certain conditions, but this has resulted
in an endless stream of bugs due to weird edge cases, and so we're now
limiting LiveEdit to functions that don't have any activation (including
not a suspended generator / async function activation).
We might eventually add the ability to LiveEdit functions with
activations and have them "upgrade upon next invocation", but that
doesn't seem to be an extremely important use case right now.
Fixed: chromium:1195927
Change-Id: I87a45ba4d0ddcfbf867bd4e73738d76b2d789e04
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2846892
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74249}
* Failed tests that also trigger GCs are not filtered out. They are
expected to be fixed when TPH supports real garbage collection.
Bug: v8:11641
Change-Id: I30b8bcf48d5e3f32439eeffb39d28ee45db2a21c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2849822
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Wenyu Zhao <wenyu.zhao@anu.edu.au>
Cr-Commit-Position: refs/heads/master@{#74212}
Enabling and disable RCS at runtime races with concurrent threads
that use RCS.
Bug: v8:11338
Change-Id: I8fa9edcbaefc339f88b2a0d079d094a7e4290fbf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2840446
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74074}
The test fails because of the race condition between concurrent GC
threads and the destructor of the test.
Bug: v8:11413
Change-Id: I5a138a61c16ddf2398e7c54defe6cc4008ca3330
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2839552
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74065}
That test is already slow on non-tsan bots, and we do not need TSan
coverage here. Thus keep it skipped, but update the comment.
R=mslekova@chromium.org
Fixed: v8:11610
No-Try: true
Change-Id: I1dedcc7b4d5736aca7c4cc0dc0526e4df7502440
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2797290
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73766}
