The new API function is called ConfigureDefaultsFromHeapSize and
accepts two parameters: the initial and the maximum heap size.
Based on the given limits the function computes the default size
for the young and the old generation.
The patch also cleans up the existing functions to make them
consistent in terms of units and heap structure.
Bug: v8:9306
Change-Id: If2200a9cdb45b0b818a373207efe4e6426f7b688
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1631593
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62017}
Allow the embedder to decrement its allocated bytes count:
- The decrement will be applied to the used bytes value.
- The decrement is ignored for the total allocated bytes.
Bug: chromium:948807
Change-Id: I609ccf81017b693e0db13b499cbf8967f5f8a2c7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1631428
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61982}
Bug: v8:9247
Change-Id: Id6860e7b0f932990ac3cda39e369b0809e4f6a2b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1632072
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Daniel Clifford <danno@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61928}
Add a new abstract class TraceEventListener which is just an interface
for consuming trace events. This separates the V8-specific stuff that
an actual perfetto consumer needs to do e.g. handling the has_more flag
and signalling back to the controller with a semaphore.
This is a change from the previous plan of making the PerfettoConsumer
class sub-classable to implement custom consumption of trace events.
This will be difficult when the consumer is created outside of the
PerfettoTracingController as we can't hook up the
consumer_finished_semaphore_ that belongs to the controller.
Now the PerfettoTracingController is responsible for the Consumer life-
cycle and hides it entirely from callers. We add the
AddTraceEventListener() method to allow callers to register a listener
either for testing or a JSON listener for real tracing.
This lets us write tests that can store all the trace events in memory
without first converting them to JSON, letting us write test more
easily. There's an example test add to test-tracing - more tests using
this style will follow.
Cq-Include-Trybots: luci.v8.try:v8_linux64_perfetto_dbg_ng
Bug: v8:8339
Change-Id: I2d2b0f408b1c7bed954144163e1968f40d772c1b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1628789
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61854}
This is a reland of a03ed62679
Removed the added test which was failing on win32. The test was unrelated
to the CL; we can add it later.
Original change's description:
> [tracing] Add a configurable output stream for perfetto tracing
>
> Add the ability to provide perfetto with an output stream for the JSON
> consumer rather than hardcode it. D8 will use this interface exclusively
> once the old trace controller is removed.
>
> Also add a test for scope-managed trace events and their duration - this
> was leftover from a previous CL.
>
> Cq-Include-Trybots: luci.v8.try:v8_linux64_perfetto_dbg_ng
> Bug: v8:8339
> Change-Id: I1c45e17e528b549a4cfdaecabd33c7ac4ab4af77
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1611801
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61753}
TBR=jgruber@chromium.org, ulan@chromium.org
Bug: v8:8339
Change-Id: I3442a4d111e12947c107e7d0c226ae934acd06e4
Cq-Include-Trybots: luci.v8.try:v8_linux64_perfetto_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627334
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61780}
The `FunctionTemplate::SetHiddenPrototype()` API was deprecated
beginning of the year and all uses in Node.js and Chrome have been
removed appropriately. This removes the implementation of the method
and the bit in the `FunctionTemplateInfo`, but retains the bit in
the Map for now. That will be cleaned up as a second step later.
Bug: v8:9183, v8:9267
Change-Id: I9aa2fc484b3321f4f42a29a0a38d72a6d30054a7
Cq-Include-Trybots: luci.chromium.try:linux-rel,win7-rel
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627329
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61771}
This reverts commit a03ed62679.
Reason for revert: Fails on win32: https://ci.chromium.org/p/v8/builders/ci/V8%20Win32/21252
Original change's description:
> [tracing] Add a configurable output stream for perfetto tracing
>
> Add the ability to provide perfetto with an output stream for the JSON
> consumer rather than hardcode it. D8 will use this interface exclusively
> once the old trace controller is removed.
>
> Also add a test for scope-managed trace events and their duration - this
> was leftover from a previous CL.
>
> Cq-Include-Trybots: luci.v8.try:v8_linux64_perfetto_dbg_ng
> Bug: v8:8339
> Change-Id: I1c45e17e528b549a4cfdaecabd33c7ac4ab4af77
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1611801
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61753}
TBR=ulan@chromium.org,yangguo@chromium.org,jgruber@chromium.org,petermarshall@chromium.org
Change-Id: Ie7dbe4fc5f9e496fafc8e3ad2b05011b88c9e2c3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8339
Cq-Include-Trybots: luci.v8.try:v8_linux64_perfetto_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1625465
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61754}
Add the ability to provide perfetto with an output stream for the JSON
consumer rather than hardcode it. D8 will use this interface exclusively
once the old trace controller is removed.
Also add a test for scope-managed trace events and their duration - this
was leftover from a previous CL.
Cq-Include-Trybots: luci.v8.try:v8_linux64_perfetto_dbg_ng
Bug: v8:8339
Change-Id: I1c45e17e528b549a4cfdaecabd33c7ac4ab4af77
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1611801
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61753}
Provide a global memory controller used to compute limits for combined
on-heap and embedder memory. The global controller uses the same
mechanism (gc speed, mutator speed) and growing factors as the regular
on-heap controller.
Rely on V8's mechanisms for configured state that stops shrinking the
limit.
Reland:
- API fixes with overrides and default versions.
- Fix of depending on uninitialized values when using the old API.
- GCTracer: Fixed issue in speed computation.
- GCTracer: Added unittests.
This reverts commit 5e043f2773.
Bug: chromium:948807
Change-Id: I0f81253b3e1a8b49a7ac107c012a15e33cb514d7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1622852
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61735}
Now that we support a max_samples parameter, it isn't actually necessary
to have a record_samples flag (as it can just be modeled by 0).
Change-Id: I578ecc9f6ee73ecbe1f93d0d04ee8028a9a2716d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1611015
Commit-Queue: Andrew Comminos <acomminos@fb.com>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61717}
This reverts commit dac86be251.
Reason for revert: Still failing msan: https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/26904
Original change's description:
> Reland "[heap] Add global memory controller"
>
> Provide a global memory controller used to compute limits for combined
> on-heap and embedder memory. The global controller uses the same
> mechanism (gc speed, mutator speed) and growing factors as the regular
> on-heap controller.
>
> Rely on V8's mechanisms for configured state that stops shrinking the
> limit.
>
> This reverts commit 5e043f2773.
>
> Tbr: ulan@chromium.org
> Bug: chromium:948807
> Change-Id: Id4f94e7dcb458d1d0d2f872194f8f3ea0959a73f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1622968
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61715}
TBR=ulan@chromium.org,mlippautz@chromium.org
Change-Id: If30649f158a08fd185f2771a13b8e09cf53fb667
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:948807
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1622849
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61716}
Provide a global memory controller used to compute limits for combined
on-heap and embedder memory. The global controller uses the same
mechanism (gc speed, mutator speed) and growing factors as the regular
on-heap controller.
Rely on V8's mechanisms for configured state that stops shrinking the
limit.
This reverts commit 5e043f2773.
Tbr: ulan@chromium.org
Bug: chromium:948807
Change-Id: Id4f94e7dcb458d1d0d2f872194f8f3ea0959a73f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1622968
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61715}
This reverts commit cfe281f3db.
Reason for revert: Fails on gcc bots
Original change's description:
> [heap] Add global memory controller
>
> Provide a global memory controller used to compute limits for combined
> on-heap and embedder memory. The global controller uses the same
> mechanism (gc speed, mutator speed) and growing factors as the regular
> on-heap controller.
>
> Rely on V8's mechanisms for configured state that stops shrinking the
> limit.
>
> Bug: chromium:948807
> Change-Id: I3283a2c28e6ab889f8d2ad85c9b67b8f234b9900
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1619762
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61712}
TBR=ulan@chromium.org,hpayer@chromium.org,mlippautz@chromium.org,bikineev@chromium.org
Change-Id: I503d5a1436eb9156556b5bca852d2b2f9da2446f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:948807
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1622967
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61713}
Provide a global memory controller used to compute limits for combined
on-heap and embedder memory. The global controller uses the same
mechanism (gc speed, mutator speed) and growing factors as the regular
on-heap controller.
Rely on V8's mechanisms for configured state that stops shrinking the
limit.
Bug: chromium:948807
Change-Id: I3283a2c28e6ab889f8d2ad85c9b67b8f234b9900
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1619762
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61712}
Permit individual calls to CpuProfiler::StartSampling to provide their
own requested sampling interval, to be snapped to the profiler's
sampling interval. Use the greatest common divisor of all sample rates
to determine what sample rate should be chosen for the sampling thread,
and dispatch samples to attached profilers based on their requested
sample periodicity.
Change-Id: I0b076d09761d7176f31725e112578b68ab5da54c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1484461
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Andrew Comminos <acomminos@fb.com>
Cr-Commit-Position: refs/heads/master@{#61548}
The main change here is that in isolate-data.h, I'm switching from stateJSON to state.
This routine returns a CBOR encoded state cookie, which is also what we already
use in Chromium (blink).
In inspector-test.cc, I then put this byte vector into a V8 String,
and to make this roundtrip, change the extraction routine to get the
bytes. It's a little weird to store arbitrary bytes inside a v8 string,
but it appears to work fine because these bytes end up in the 8 bit portion,
much like isolatin characters would.
Change-Id: I72a0bdefd85a290f4e91db79be67d86952831685
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1610478
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Commit-Queue: Johannes Henkel <johannes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61544}
... which works properly when intptr_t is bigger than int and makes
MSVC happy about this.
Bug: v8:9183
Change-Id: I224eff00c1cbcb9a8c9f16eadaec078db7cf16db
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1601511
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61405}
Helps make configuring profilers more scalable as our number of
parameters grows.
Change-Id: I81263a30c221edaa3934a92eb000b71ddfbdea60
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1601585
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Andrew Comminos <acomminos@fb.com>
Cr-Commit-Position: refs/heads/master@{#61402}
Removes:
* ReturnValue::Set(Persistent)
* String::NewFromUtf8/NewFromTwoByte/NewExternal overloads that
returned Locals instead of MaybeLocal
* String::NewStringType
Now that the old String overloads are gone, the new ones can now have
a default parameter for NewStringType matching the old overloads.
Bug: v8:7289, v8:7281, v8:9183
Change-Id: If66e6d587ac778e015c281b376a9b4d6093f6ec3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1591605
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61373}
To prevent OOMs for leaked CPU profilers, add the option to limit the
maximum number of samples that are included in a CPU profile.
Bug: chromium:956688
Change-Id: I119d0622e7d39c187f8e09e2d49dec91fd724ecb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1588412
Commit-Queue: Andrew Comminos <acomminos@fb.com>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61352}
This CL extends the stack frame API to include a flag to distinguish
between user and V8 builtin frames. The intention is to extend the API in
a later CL, so stack traces include builtin frames.
This flag gives embedders more control what to do with builtin frames.
R=jgruber@chromium.org, yangguo@chromium.org
Bug: v8:8742
Change-Id: Ieda5782dd2073c1e7fd49492bfdfa829a43dc710
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1583723
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61233}
Keep the existing method for compatibility, by converting
to json from CBOR using the inspector_protocol_encoding library,
via a v8 specific interface library that directs routines for
converting between strings and doubles to v8's implementations.
This change also brings in the encoding.h / encoding.cc files from the
upstream inspector_protocol project. The only modification here
are the header guards, and the namespace. I will fix roll.py to
make it so that we pick up future changes.
third_party/inspector_protocol/BUILD.gn is specific to v8, by necessity.
third_party/inspector_protocol/.clang-format is a copy of the upstream
file. If we don't put this, we'll find ourselves auto-formatting the roll,
which is annoying.
This is a reland of
https://chromium-review.googlesource.com/c/v8/v8/+/1590627 with the
only modification in the DEPS file; this time I'm including
third_party/inspector_protocol/encoding/encoding{.h,cc} in addition to
the relative include there. Not sure why this is needed but I'm hoping
it gets me past the presubmit which may resolve the include path
relative to the V8 base (the ../../third_party is needed for when V8 is
embedded into Chromium).
Change-Id: Ic76b2b5faa7e1cbdceb15aff3f369e9a303e3e85
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1593646
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Johannes Henkel <johannes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61214}
Based on Primiano's prototype:
https://chromium-review.googlesource.com/c/v8/v8/+/1290549
This is still behind a build flag. I'll add functionality incrementally
rather than land everything in one giant CL.
This CL sets up the basic classes that will be used for the Perfetto
implementation, e.g. the producer, consumer, controller and task runner.
This implementation produces a binary proto file in the current
directory named v8_trace.proto. It doesn't yet produce JSON output,
that is coming in a following CL.
Currently the old tracing and perfetto tracing are both run alongside
each other if the build flag is enabled.
Cq-Include-Trybots: luci.v8.try:v8_linux64_perfetto_dbg_ng
Bug: v8:8339
Change-Id: I0eb9ecefa191ceead60aadd5b591d75c99395a6e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1408995
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61209}
This reverts commit b7134d3af6.
Reason for revert: breaks presubmit
Original change's description:
> [DevTools] Add V8InspectorSession::state(), which returns binary (CBOR).
>
> Keep the existing method for compatibility, by converting
> to json from CBOR using the inspector_protocol_encoding library,
> via a v8 specific interface library that directs routines for
> converting between strings and doubles to v8's implementations.
>
> This change also brings in the encoding.h / encoding.cc files from the
> upstream inspector_protocol project. The only modification here
> are the header guards, and the namespace. I will fix roll.py to
> make it so that we pick up future changes.
>
> third_party/inspector_protocol/BUILD.gn is specific to v8, by necessity.
> third_party/inspector_protocol/.clang-format is a copy of the upstream
> file. If we don't put this, we'll find ourselves auto-formatting the roll,
> which is annoying.
>
> Change-Id: I20fa8759164e7a39f8a7c30e0d2a3f8a7e4be227
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1590627
> Reviewed-by: Alexei Filippov <alph@chromium.org>
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> Commit-Queue: Johannes Henkel <johannes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61187}
TBR=dgozman@chromium.org,alph@chromium.org,caseq@chromium.org,johannes@chromium.org
Change-Id: I67f297ef8454499036c94bf88e0d23657a579140
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1592130
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Johannes Henkel <johannes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61189}
Keep the existing method for compatibility, by converting
to json from CBOR using the inspector_protocol_encoding library,
via a v8 specific interface library that directs routines for
converting between strings and doubles to v8's implementations.
This change also brings in the encoding.h / encoding.cc files from the
upstream inspector_protocol project. The only modification here
are the header guards, and the namespace. I will fix roll.py to
make it so that we pick up future changes.
third_party/inspector_protocol/BUILD.gn is specific to v8, by necessity.
third_party/inspector_protocol/.clang-format is a copy of the upstream
file. If we don't put this, we'll find ourselves auto-formatting the roll,
which is annoying.
Change-Id: I20fa8759164e7a39f8a7c30e0d2a3f8a7e4be227
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1590627
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Johannes Henkel <johannes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61187}
This enables the embedder to check if the snapshot generated
from SnapshotCreator::CreateBlob() can be rehashed and the seed
can be recomputed during deserialization.
The lack of this functionality resulted in a temporary vunerability
in Node.js: https://github.com/nodejs/node/pull/27365
Change-Id: I88d52337217c40f79c26438be3c87d2db874d980
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1578661
Commit-Queue: Joyee Cheung <joyee@igalia.com>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61175}
Similar issue as crbug.com/933103, so the fix follows the same
pattern too.
No regression test, because it will OOM anyway.
Bug: chromium:957015
Change-Id: Ic5b67d84aa1c44609e6c96485974af9ecab2ed0e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1585854
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61101}
Remove Isolate versions of
Value::ToNumber/ToString/ToObject/ToInteger/ToInt32 and Context versions
of ToBoolean and BooleanValue (which could never throw anyway).
Bug: v8:7279, v8:9183
Change-Id: Ib144f8894a2b37c44216ba2d0cb298e8f0c72a3e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1585735
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61071}
Adds a new flag to CpuProfiler to control whether or not "debug" names
(potentially inferred from scope) are used for captured frames
associated with a SharedFunctionInfo instance.
Bug: v8:9135
Change-Id: Ia1db20e389f3d0beb60eb47798820fb11d501c88
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1583042
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61015}
On Arm/64 the last return address is stored in a link register instead of
being pushed to the top-of-stack like on x64/ia32. Extend the support in the
tick sampler to check for samples in a frameless bytecode handler with support
for checking the link register if it exists instead of top-of-stack. In addition,
make the x64/ia32 check more robust by ensuring we only apply the change if the
pc is a bytecode handler and the top frame isn't a bytecode handler (stub) frame.
BUG=v8:9162
Change-Id: I89d2e80ea8a0b84ff6a265d0e0e73f9fdd1daca8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1578464
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60976}
This is one step towards removing the {StrLength} helper and using
{size_t} consistently instead.
R=mstarzinger@chromium.org
Bug: v8:8834
Change-Id: Ibcdfd579531a259d490c39a8e8c96d469a5a4aac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1578901
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60974}
This reverts commit fa6ec3cb08.
Reason for revert: v8:9169, v8:9170
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux/31457https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64/31417https://ci.chromium.org/p/v8/builders/ci/V8%20Win32%20-%20debug/19919
Original change's description:
> [cpu-profiler] Split out debug mode for CPU profiler naming
>
> Adds a new flag to CpuProfiler to control whether or not "debug" names
> (potentially inferred from scope) are used for captured frames
> associated with a SharedFunctionInfo instance.
>
> Bug: v8:9135
> Change-Id: I104f3246431dc6336de4e4688c0d98c86e0bb776
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1566169
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Alexei Filippov <alph@chromium.org>
> Reviewed-by: Peter Marshall <petermarshall@chromium.org>
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60972}
TBR=ulan@chromium.org,alph@chromium.org,yangguo@chromium.org,petermarshall@chromium.org,acomminos@fb.com
Change-Id: I573194b5affd31fd0748b9ef3c45052e8ab420f5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9135
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1581639
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60973}
Adds a new flag to CpuProfiler to control whether or not "debug" names
(potentially inferred from scope) are used for captured frames
associated with a SharedFunctionInfo instance.
Bug: v8:9135
Change-Id: I104f3246431dc6336de4e4688c0d98c86e0bb776
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1566169
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60972}
We see crashes in the wild that we suspect are caused by these changes.
This is a manual revert because of conflicts.
Revert "[turbofan] Fix incorrect CheckNonEmptyString lowering."
This reverts commit b3b7011867.
Revert "[turbofan] Fix incorrect lowering of CheckNonEmptyString."
This reverts commit 5758209026.
Revert "[turbofan] Significantly improve ConsString creation performance."
This reverts commit d6a60a0ee1.
Bug: v8:9147
Change-Id: I262c21e5406a9c4c8ad0e0f995582c5802f0fa1e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1571613
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60919}
Add OS detection for iOS builds. If we are building for an iOS target,
the following V8 OS defines will be set:
V8_OS_BSD
V8_OS_MACOSX
V8_OS_POSIX
V8_OS_IOS // This one is new.
The detection code is taken from Chromium's build_config.h file.
Bug: v8:9140
Change-Id: I435a8931dc0ae0eefdb893bc838a04470bcc57db
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1569435
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60897}
Adds CpuProfiler::SetUsePreciseSampling, which provides a hint whether
to sacrifice CPU cycles to reduce the level of sampling interval
variance. On Windows, this controls whether or not busy waiting is
performed for sample rates < 100ms. Defaults to enabled (old behaviour).
Bug: v8:3967
Change-Id: Iee84c3ae8132541c78b1f78bf294ec7c718bb19b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1510577
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60866}
Blink used to use v8::MicrotasksScope::GetCurrentDepth() to get the
number of nested MicrotasksScope for the default microtask queue.
However, there was no corresponding one for non-default queues.
Change-Id: I1c2472ba19b1a11cb968f02119d91d92867c6e02
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1567705
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60862}
MicrotasksPolicy was a missing functionality of MicrotaskQueue that
was available on the per-Isolate MicrotaskQueue.
This expose that as a construction time option.
Change-Id: I22bcc8082ca64552d107ee6db138011654047861
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1559677
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60858}
In file include/v8config.h we define:
ifdef V8_OS_WIN
...
if defined(_M_X64) || defined(__x86_64__)
define V8_OS_WIN_X64 true
endif
and V8_OS_WIN_X64 is supposed to be defined when targeting X64 on Windows only.
But this is wrong because V8_OS_WIN_X64 gets defined also on an ARM64 builds
when the host machine is X64. It should instead be:
ifdef V8_OS_WIN
...
if defined(V8_TARGET_ARCH_X64)
define V8_OS_WIN_X64 true
endif
Bug: v8:9090
Change-Id: I88e4c46bb6df1efa2070d4e1785081d71df96f0e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1554222
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#60758}
Some state related to WasmMemories is cached on the JSArrayBuffer
object (is_growable, is_wasm_memory). The problem with this is in
some PostMessage flows, this information can get lost depending on
how JSArrayBuffers are deserialized. In this particular case when
the WasmMemory is postMessaged, it goes through the Blink
DedicatedWorkerMessagingProxy::PostMessageToWorkerGlobalScope flow,
which reconstructs the ArrayBuffer from the backing store, and size,
and loses the is_growable flag, leading to a failure to grow memory.
Moving the is_growable flag so that AllocationData can be the source
of truth for all wasm memory state, and is consistently preserved
across PostMessage.
Change-Id: I775f66ddeff68b8cafc18b75ca5460dfb0343c8b
Bug: v8:9065
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1549789
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60641}
Adds the notion of a "source type" to CpuProfileNode instances, hinting
at the underlying source of the function or state that resulted in the
generation of the node.
Bug: v8:9001
Change-Id: Ie14c54d41b99eb02f54b423fa5d939e9d7f63785
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1510576
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60590}
This is a reland of 3cda21de77
Original change's description:
> V8 x64 backend doesn't emit ABI compliant stack frames
>
> On 64 bit Windows, the OS stack walking does not work because the V8 x64
> backend doesn't emit unwinding info and also because it doesn't emit ABI
> compliant stack frames. See
> https://docs.google.com/document/d/1-wf50jFlii0c_Pr52lm2ZU-49m220nhYMrHDi3vXnh0/edit
> for more details.
>
> This problem can be fixed by observing that V8 frames usually all have the same
> prolog and epilog:
>
> push rbp,
> mov rbp, rsp
> ...
> pop rbp
> ret N
>
> and that it is possible to define XDATA (UNWIND_CODEs) that specify how Windows
> should walk through V8 frames. Furthermore, since V8 Code objects are all
> allocated in the same code-range for an Isolate, it is possible to register a
> single PDATA/XDATA entry to cover stack walking for all the code generated
> inside that code-range.
>
> This PR contains changes required to enable stack walking on Win64:
>
> EmbeddedFileWriter now adds assembler directives to the builtins
> snapshot source file (embedded.cc) to emit additional entries in the .pdata and
> in the .xdata section of the V8 executable. This takes care of stack walking
> for embedded builtins. (The case of non-embedded builtins is not supported).
> The x64 Assembler has been modified to collect the information required to emit
> this unwind info for builtins.
>
> Stack walking for jitted code is handled is Isolate.cpp, by registering
> dynamically PDATA/XDATA for the whole code-range address space every time a new
> Isolate is initialized, and by unregistering them when the Isolate is
> destroyed.
>
> Stack walking for WASM jitted code is handled is the same way in
> wasm::NativeModule (wasm/wasm-code-manager.cpp).
>
> It is important to note that Crashpad and Breakpad are already registering
> PDATA/XDATA to manage and report unhandled exceptions (but not for embedded
> builtins). Since it is not possible to register multiple PDATA entries for the
> same address range, a new function is added to the V8 API:
> SetUnhandledExceptionCallback() can be used by an embedder to register its own
> unhandled exception handler for exceptions that arise in v8-generated code.
> V8 embedders should be modified accordingly (code for this is in a separate PR
> in the Chromium repository:
> https://chromium-review.googlesource.com/c/chromium/src/+/1474703).
>
> All these changes are experimental, behind:
>
> the 'v8_win64_unwinding_info' build flag, and
> the '--win64-unwinding-info' runtime flag.
>
> Bug: v8:3598
> Change-Id: Iea455ab6d0e2bf1c556aa1cf870841d44ab6e4b1
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1469329
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Paolo Severini <paolosev@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#60330}
Bug: v8:3598
Change-Id: If988baf7d3e4af165b919d6e54c1ad985f8e25e3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1534618
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#60581}
This reverts commit 3cda21de77.
Reason for revert: Breaks the roll on Windows (see https://cr-buildbucket.appspot.com/build/8918477701097622400)
Original change's description:
> V8 x64 backend doesn't emit ABI compliant stack frames
>
> On 64 bit Windows, the OS stack walking does not work because the V8 x64
> backend doesn't emit unwinding info and also because it doesn't emit ABI
> compliant stack frames. See
> https://docs.google.com/document/d/1-wf50jFlii0c_Pr52lm2ZU-49m220nhYMrHDi3vXnh0/edit
> for more details.
>
> This problem can be fixed by observing that V8 frames usually all have the same
> prolog and epilog:
>
> push rbp,
> mov rbp, rsp
> ...
> pop rbp
> ret N
>
> and that it is possible to define XDATA (UNWIND_CODEs) that specify how Windows
> should walk through V8 frames. Furthermore, since V8 Code objects are all
> allocated in the same code-range for an Isolate, it is possible to register a
> single PDATA/XDATA entry to cover stack walking for all the code generated
> inside that code-range.
>
> This PR contains changes required to enable stack walking on Win64:
>
> EmbeddedFileWriter now adds assembler directives to the builtins
> snapshot source file (embedded.cc) to emit additional entries in the .pdata and
> in the .xdata section of the V8 executable. This takes care of stack walking
> for embedded builtins. (The case of non-embedded builtins is not supported).
> The x64 Assembler has been modified to collect the information required to emit
> this unwind info for builtins.
>
> Stack walking for jitted code is handled is Isolate.cpp, by registering
> dynamically PDATA/XDATA for the whole code-range address space every time a new
> Isolate is initialized, and by unregistering them when the Isolate is
> destroyed.
>
> Stack walking for WASM jitted code is handled is the same way in
> wasm::NativeModule (wasm/wasm-code-manager.cpp).
>
> It is important to note that Crashpad and Breakpad are already registering
> PDATA/XDATA to manage and report unhandled exceptions (but not for embedded
> builtins). Since it is not possible to register multiple PDATA entries for the
> same address range, a new function is added to the V8 API:
> SetUnhandledExceptionCallback() can be used by an embedder to register its own
> unhandled exception handler for exceptions that arise in v8-generated code.
> V8 embedders should be modified accordingly (code for this is in a separate PR
> in the Chromium repository:
> https://chromium-review.googlesource.com/c/chromium/src/+/1474703).
>
> All these changes are experimental, behind:
>
> the 'v8_win64_unwinding_info' build flag, and
> the '--win64-unwinding-info' runtime flag.
>
> Bug: v8:3598
> Change-Id: Iea455ab6d0e2bf1c556aa1cf870841d44ab6e4b1
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1469329
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Paolo Severini <paolosev@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#60330}
TBR=bbudge@chromium.org,ulan@chromium.org,mvstanton@chromium.org,mstarzinger@chromium.org,gdeepti@chromium.org,jgruber@chromium.org,paolosev@microsoft.com
Change-Id: If8470da94c58df8c800cbe8887f9f86236e43353
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:3598
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532321
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60372}
On 64 bit Windows, the OS stack walking does not work because the V8 x64
backend doesn't emit unwinding info and also because it doesn't emit ABI
compliant stack frames. See
https://docs.google.com/document/d/1-wf50jFlii0c_Pr52lm2ZU-49m220nhYMrHDi3vXnh0/edit
for more details.
This problem can be fixed by observing that V8 frames usually all have the same
prolog and epilog:
push rbp,
mov rbp, rsp
...
pop rbp
ret N
and that it is possible to define XDATA (UNWIND_CODEs) that specify how Windows
should walk through V8 frames. Furthermore, since V8 Code objects are all
allocated in the same code-range for an Isolate, it is possible to register a
single PDATA/XDATA entry to cover stack walking for all the code generated
inside that code-range.
This PR contains changes required to enable stack walking on Win64:
EmbeddedFileWriter now adds assembler directives to the builtins
snapshot source file (embedded.cc) to emit additional entries in the .pdata and
in the .xdata section of the V8 executable. This takes care of stack walking
for embedded builtins. (The case of non-embedded builtins is not supported).
The x64 Assembler has been modified to collect the information required to emit
this unwind info for builtins.
Stack walking for jitted code is handled is Isolate.cpp, by registering
dynamically PDATA/XDATA for the whole code-range address space every time a new
Isolate is initialized, and by unregistering them when the Isolate is
destroyed.
Stack walking for WASM jitted code is handled is the same way in
wasm::NativeModule (wasm/wasm-code-manager.cpp).
It is important to note that Crashpad and Breakpad are already registering
PDATA/XDATA to manage and report unhandled exceptions (but not for embedded
builtins). Since it is not possible to register multiple PDATA entries for the
same address range, a new function is added to the V8 API:
SetUnhandledExceptionCallback() can be used by an embedder to register its own
unhandled exception handler for exceptions that arise in v8-generated code.
V8 embedders should be modified accordingly (code for this is in a separate PR
in the Chromium repository:
https://chromium-review.googlesource.com/c/chromium/src/+/1474703).
All these changes are experimental, behind:
the 'v8_win64_unwinding_info' build flag, and
the '--win64-unwinding-info' runtime flag.
Bug: v8:3598
Change-Id: Iea455ab6d0e2bf1c556aa1cf870841d44ab6e4b1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1469329
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#60330}
When pointer compression is enabled the [u]intptr_t and double fields are
only kTaggedSize aligned so in order to avoid undefined behavior in C++ code
we have to access these values in an unaligned pointer friendly way although
both x64 and arm64 architectures (where pointer compression is supported)
allow unaligned access.
These changes will be removed once v8:8875 is fixed and all the
kSystemPointerSize fields are properly aligned.
Bug: v8:7703
Change-Id: I4df477cbdeab806303bb4f675d52b61c06342c8e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1528996
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60321}
This change significantly improves the performance of string
concatenation in optimized code for the case where the resulting string
is represented as a ConsString. On the relevant test cases we go from
serializeNaive: 10762 ms.
serializeClever: 7813 ms.
serializeConcat: 10271 ms.
to
serializeNaive: 10278 ms.
serializeClever: 5533 ms.
serializeConcat: 10310 ms.
which represents a 30% improvement on the "clever" benchmark, which
tests specifically the ConsString creation performance.
This was accomplished via a couple of different steps, which are briefly
outlined here:
1. The empty_string gets its own map, so that we can easily recognize
and handle it appropriately in the TurboFan type system. This
allows us to express (and assert) that the inputs to NewConsString
are non-empty strings, making sure that TurboFan no longer creates
"crippled ConsStrings" with empty left or right hand sides.
2. Further split the existing String types in TurboFan to be able to
distinguish between OneByte and TwoByte strings on the type system
level. This allows us to avoid having to dynamically lookup the
resulting ConsString map in case of ConsString creation (i.e. when
we know that both input strings are OneByte strings or at least
one of the input strings is TwoByte).
3. We also introduced more finegrained feedback for the Add bytecode
in the interpreter, having it collect feedback about ConsStrings,
specifically ConsOneByteString and ConsTwoByteString. This feedback
can be used by TurboFan to only inline the relevant code for what
was seen so far. This allows us to remove the Octane/Splay specific
magic in JSTypedLowering to detect ConsString creation, and instead
purely rely on the feedback of what was seen so far (also making it
possible to change the semantics of NewConsString to be a low-level
operator, which is only introduced in SimplifiedLowering by looking
at the input types of StringConcat).
4. On top of the before mentioned type and interpreter changes we added
new operators CheckNonEmptyString, CheckNonEmptyOneByteString, and
CheckNonEmptyTwoByteString, which perform the appropriate (dynamic)
checks.
There are several more improvements that are possible based on this, but
since the change was already quite big, we decided not to put everything
into the first change, but do some follow up tweaks to the type system,
and builtin optimizations later.
Tbr: mstarzinger@chromium.org
Bug: v8:8834, v8:8931, v8:8939, v8:8951
Change-Id: Ia24e17c6048bf2b04df966d3cd441f0edda05c93
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Doc: https://bit.ly/fast-string-concatenation-in-javascript
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1499497
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60318}
Consumers can use this to derive the full stack from sampled leaf nodes
without having to flatten the tree.
Bug: v8:8999
Change-Id: I42c638dd2c757837b0c03514c204be0182653291
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1525877
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60309}
Since StreamedSource takes ownership of the ExternalSourceStream
passed into it, it should take it by unique_ptr rather than raw
pointer to signal this transfer of ownership. The old constructor
is now deprecated.
Change-Id: I24681926c2f3141f7dd3664f72019a4c6deabfd7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1520713
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60232}
Enable cross-origin frame filtering by exposing this bit from
ScriptOriginOptions.
Bug: v8:8956
Change-Id: I109eec9db8b3d42d68d32abc5edd437b1c91a9b8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1493294
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60205}
Extensions are now always passed via unique_ptr and are owned by V8.
This CL removes the deprecated API where the embedder would own the
Extension, but has no mechanism for deleting it.
R=ulan@chromium.org
Bug: v8:8725
Change-Id: Icb83660fad9d04c66f8db2265091ebabcbb197c4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1514493
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60186}
Embedders should use WasmModuleObject instead.
R=adamk@chromium.org
Change-Id: Ibe5e4b160bb917bcd9f895be1b954acc40a045d8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1513616
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60184}
This should not be used anymore (and it definitely is not by Node.js
or Chromium).
Change-Id: I4a1ce1fda98efd197a64ce0969dae5c8b18f6e97
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1511484
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60139}
Updates a bunch of links from https://github.com/v8/v8/wiki pages to the
appropriate v8.dev page that it redirected to anyway.
Bug: v8:8834
Change-Id: I5b37996900eb779753d97e487d16e1489f54d391
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1503473
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60086}
This adds the entrypoint to MicrotaskQueue, which used to miss the
implementation.
Bug: v8:8124
Change-Id: I114fb69d975ee75c86b19349ca76789e425ea910
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1505232
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60076}
Fixing a few float and int overflows.
Drive-by fix: with --experimental-wasm-bigint, Number values
may not be used to initialize i64-typed globals. The existing
code for doing that relied on UB; since it's a spec violation
the fix is to throw instead.
No regression test for 933103 because it will OOM anyway.
No regression test for 932896 because it would be extremely slow.
Bug: chromium:927894, chromium:927996, chromium:930086, chromium:932679, chromium:932896, chromium:933103, chromium:933134
Change-Id: Iae1c1ff1038af4512a52d3e56b8c4b75f2233314
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1495911
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60075}
... when pointer compression is enabled and some number of cleanups.
Bug: v8:7703
Change-Id: If7344abf68a1c4d54e4a79d066dc185f25055d7d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1477737
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60056}
This adds overloads of v8::Isolate::{Add,Remove}MicrotaskCompletedCallback,
that use MicrotasksCompletedCallbackWithData, and marks the original one
as V8_DEPRECATE_SOON for transition.
Bug: v8:8124
Change-Id: I124c3108545e1a2b29cd95620f36901431663c65
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1493766
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60045}
This CL also gives up trying to maintain double and system word
fields at aligned addresses because currently it's not always
maintained (v8:8875) and Torque object definitions do not support
padding fields (v8:8863).
Given that both platforms where pointer compression is going to be
enabled (x64 and arm64) support loading of doubles and full words
from 4-byte aligned addresses we are fine.
Bug: v8:7703
Change-Id: I99fc6da5a0927f4db9b8fb24c7cc0bfc416523bc
Reviewed-on: https://chromium-review.googlesource.com/c/1496974
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60013}
In the early days of Chrome when we used WebKit there was no support for
ASCII strings on the C++ side, so we put a hint onto these two-byte
strings that said "string only contains one byte data", such that
internally in V8 when these were involved in string operations, we could
instead create the *cheaper* one byte strings.
Nowadays Blink properly supports one-byte string representations and
this additional hint only comes with overhead, since we check it in
quite a few places (i.e. on the hot path for string concatenation), plus
we end up consuming more memory due to the additional string maps.
Removing the hint also frees one bit in the InstanceType zoo for
strings.
This alone improves performance on the `bench-dom-serialize.js` test case
by around **3%**.
Tbr: mstarzinger@chromium.org
Bug: v8:6622, v8:8834, v8:8939
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Change-Id: I0753f2859cee7b5a37b6f0da64d8ec39fcb044ff
Doc: https://bit.ly/fast-string-concatenation-in-javascript
Reviewed-on: https://chromium-review.googlesource.com/c/1498478
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60006}
This adds a new method Isolate::LocaleConfigurationChangeNotification
that clears the cached Locale allowing new Locales to be picked up in
later Locale operations.
It moves Date::DateTimeConfigurationChangeNotification to Isolate
(deprecating the old one) so that the configuration change methods are
found together.
Change-Id: Iffc15e326933c5bc5baf2f0eafdd5c148b8279a8
Reviewed-on: https://chromium-review.googlesource.com/c/1491608
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60003}
This pooling introduces severe lock contention for Liftoff compilation,
since each compilation uses its own Zone which does at least one
segment allocation.
It's also unclear whether pooling improves performance, since {malloc}
should implement a similar pooling mechanism, but better optimized for
multithreaded uses.
Feel free to revert if this introduces significant regressions.
R=verwaest@chromium.org
Bug: v8:8916
Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_rel
Change-Id: Iaf988bed898e35700f5f7f3310df8e01918de4c9
Reviewed-on: https://chromium-review.googlesource.com/c/1491632
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59959}
This introduces v8::MicrotaskQueue backed by v8::internal::MicrotaskQueue.
The embedder will get an option to use non-default MicrotaskQueue by creating
the instance by v8::MicrotaskQueue::New(). The instance can be attached to
a Context by passing it to Context::New().
Bug: v8:8124
Change-Id: Iee0711785d5748860eb94e30a8d83199a743ffaa
Reviewed-on: https://chromium-review.googlesource.com/c/1414950
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59933}
The default TracingController (used by d8 and Node) has some concurrency
issues. The new test flushes these out, when a second thread logs trace
events while the main thread calls StopTracing().
- Use an acquire load in UpdateCategoryGroupEnabledFlags() because this
was racing with GetCategoryGroupEnabled() where a new category is
added in the slow path. g_category_groups is append-only, but
reads/writes to g_category_index need to be correctly ordered so that
new categories are added and only then is the change to the index
visible. The relaxed load ignored this and caused unsynchronized
read/write.
- Use a relaxed load in ~ScopedTracer() to access category_group_enabled
as this previously used a non-atomic operation which caused a race
with UpdateCategoryGroupEnabledFlag() which does a relaxed store.
- Replace TracingController::mode_ with an atomic bool as read/writes to
mode_ were not synchronized and caused TSAN errors. It only has two
states and it doesn't seem like we will extend this so just convert it
to bool.
- Take the lock around calling trace_object->Initialize in
AddTraceEvent(), and around trace_buffer_->Flush() in StopTracing().
These two raced previously as the underlying TraceBufferRingBuffer
passes out pointers to TraceObjects in a synchronized way, but the
caller (AddTraceEvent) then writes into the object without
synchronization. This leads to races when Flush() is called, at which
time TraceBufferRingBuffer assumes that all the pointers it handed out
are to valid, initialized TraceObjects - which is not true because
AddTraceEvent may still be calling Initialize on them. This could be
the cause of issues in Node.js where the last line of tracing/logging
sometimes gets cut off. This is kind of a band-aid solution - access
to the TraceObjects handed out by the ring buffer really needs proper
synchronization which at this point would require redesign. It's quite
likely we will replace this with Perfetto in the near future so not
much point investing in this code right now.
- Enable TracingCpuProfiler test which was flaky due to these bugs.
Bug: v8:8821
Change-Id: I141296800c6906ac0e7f3f21dd16d861b07dae62
Reviewed-on: https://chromium-review.googlesource.com/c/1477283
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Ali Ijaz Sheikh <ofrobots@google.com>
Cr-Commit-Position: refs/heads/master@{#59752}
- Switch #define constant to static const
- Remove unnecessary Internal version of GetCategoryGroupEnabled()
- Fix a typo in a comment
Change-Id: I4af71dc62c7c4742bdfbcaa1ad336298eb325c42
Reviewed-on: https://chromium-review.googlesource.com/c/1477221
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59708}
This allows non-monolithic embedders to always allocate memory
for ArrayBuffer instances using the right allocation method.
This is based on a patch that Electron is currently using.
Refs: 1898f91620/patches/common/v8/array_buffer.patch
Change-Id: I39a614343118a0594aab48699a99cc2aad5b7ba9
Reviewed-on: https://chromium-review.googlesource.com/c/1462003
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59697}
This allows removing some v8.h includes in blink, and replacing them by
forward declarations.
Change-Id: I3f55669f551e29038918f54a26a0ab032ffb252a
Bug: v8:8788
Reviewed-on: https://chromium-review.googlesource.com/c/1475394
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59630}
Add an enum argument to DateTimeConfigurationChangeNotification to
control whether or not to redetect the host time zone. The default value
kSkip doesn't cause redetecting so that callers do not need to change if
they want the current behavior (e.g. Chromium).
Note that the host time zone detection does not work when v8 is run
inside a sandbox as in Chromium so that Chromium detects the host time
zone outside the sandbox before calling
DateTimeConfigurationChangeNotification. OTOH, other v8 embedders may
find it more convenient for v8 to do the host time zone detection on
their behalf. In that case, they can call the function with the new
argument set to value kRedetect.
Test:
With PHP+V8Js on linux, execute:
php -r '
putenv("TZ=Europe/Helsinki");
$v8 = new V8Js();
$v8->executeString("print((new Date(0)).toString()+\"\\n\");");
putenv("TZ=America/New_York");
$v8->executeString("print((new Date(0)).toString()+\"\\n\");");'
Result before modification:
Thu Jan 01 1970 02:00:00 GMT+0200 (Eastern European Standard Time)
Thu Jan 01 1970 02:00:00 GMT+0200 (Eastern European Standard Time)
Result after modification:
Thu Jan 01 1970 02:00:00 GMT+0200 (Eastern European Standard Time)
Thu Jan 01 1970 02:00:00 GMT+0200 (Eastern European Standard Time)
Result after V8JS is modified to use value kRedetect when calling
Thu Jan 01 1970 02:00:00 GMT+0200 (Eastern European Standard Time)
Wed Dec 31 1969 19:00:00 GMT-0500 (Eastern Standard Time)
DateTimeConfigurationChangeNotification:
Change-Id: I005192dd42669a94f606a49baa9eafad3475b9fd
Reviewed-on: https://chromium-review.googlesource.com/c/1449637
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59613}
This API has existed for two and a half years now, with no
API changes over the last year, and is widely used in production,
code so it makes sense to consider it stable.
Change-Id: I10e38c37fb8c13e22124ef0985f4b0bd8d4615fd
Reviewed-on: https://chromium-review.googlesource.com/c/1461999
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59576}
This CL moves MicrotasksPolicy from Isolate's HandleScopeImplementer
to MicrotaskQueue for better non-default MicrotaskQueue support.
After this:
* MicrotaskPolicy is per-MicrotaskQueue rather than single global one.
* ENTER_V8 runs MicrotaskQueue associated to the current Context, rather
than the default_microtask_queue().
* SuppressMicrotaskExecutionScope and MicrotasksScope are ready to
take MicrotaskQueue parameter, rather than using the default one.
Note that there's no way to use a non-default microtask queue until we
expose it as a V8 API.
Bug: v8:8124
Change-Id: I79cbc53d26d9f3f4cfb7c64d303b12e395b76815
Reviewed-on: https://chromium-review.googlesource.com/c/1429720
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59517}
This allows the embedder to use a shared library build
even if they use this method.
R=ulan@chromium.org
Change-Id: I613a6e5eb82b494128fb95dc89a0b73639ac5ca2
Reviewed-on: https://chromium-review.googlesource.com/c/1456042
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59455}
Mark Context version of BooleanValue as V8_DEPRECATED.
Bug: v8:7279, v8:8562
Change-Id: I152f5080d92a940dadea9e8f2ed3f25338e6f099
Reviewed-on: https://chromium-review.googlesource.com/c/1458245
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59452}
The new API receives a unique_ptr to avoid leaking the Extension object.
All chromium uses were refactored in https://crrev.com/c/1447652.
R=adamk@chromium.org
Bug: v8:8725
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Change-Id: I46a931a73e941fe7b78f5390fec74663677e13e4
Reviewed-on: https://chromium-review.googlesource.com/c/1454723
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59451}
This cl: https://chromium-review.googlesource.com/c/v8/v8/+/1421077
changed the implementation of SetProperty to infer the language mode.
Language mode is only required when there is an error to decide if we
have to throw an error or not. However we used to compute language mode
eagerly for PropertyCallbackInfo. This causes regressions in some
benchmarks. This cl changes it by deferring it further by computing
it only when it is actually required.
BUG: v8:8580, chromium:925289
Change-Id: Iba70ec5f9bb3deec16414a1ec418b3963f2144f9
Reviewed-on: https://chromium-review.googlesource.com/c/1454608
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59450}
Introduce a way to set a custom finalization callback that can be used
to signal and set up destruction of embedder memory.
Bug: chromium:923361
Change-Id: Ifc62ebd534aba3b02511c74b59161ec3edc0ee0d
Reviewed-on: https://chromium-review.googlesource.com/c/1452447
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59381}
Users should switch to TracedGlobal and the newly added methods of
v8::EmbedderHeapTracer.
Bug: chromium:923361, v8:8562
Change-Id: I3e5ed5785a0a49c0b65c7b1d1d103e568dd3e938
Reviewed-on: https://chromium-review.googlesource.com/c/1445752
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59297}
This way we can remove them correctly and avoid leaks.
R=mstarzinger@chromium.org, ulan@chromium.org
Bug: v8:8725
Change-Id: I52cbbf34a94171aaeb581b55aecb25311465544d
Reviewed-on: https://chromium-review.googlesource.com/c/1446453
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59266}
In future, weak handles will be considered as independent and MarkActive() will
not be supported anymore. Users should switch to TracedGlobal, when relying on
special cases for using handles with v8::EmbedderHeapTracer.
Bug: chromium:923361, v8:8562
Change-Id: Ic6e01a1ab59a25c5fb0aa2ebfb8ddb02e454d72d
Reviewed-on: https://chromium-review.googlesource.com/c/1443064
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59194}
The motivation of this change was originally to preserve is_growable
flag over PostMessage in d8. Adding a more general constructor that
uses SharedArrayBuffer::Contents.
Change-Id: Ib8f6c36d659e91f6cfb6487f56de34fa7e8841a9
Bug: v8:8564
Reviewed-on: https://chromium-review.googlesource.com/c/1383093
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59184}
TracedGlobal integrates with the use case of EmbedderHeapTracer and replaces
regular weak Global or Persistent nodes for such cases. This allows to simplify
the case for regular weak handles in a sense that they follow regular weak
semantics (if the underlying object is otherwise unreachable the weak handle
will be reset).
TracedGlobal requires slightly different semantics in the sense that it can be
required to keep them alive on Scavenge garbage collections because there's a
transitive path that is only known when using the EmbedderHeapTracer.
TracedGlobal accomodates that use case.
TracedGlobal follows move semantics and can thus be used in regular std
containers without wrapping data structure.
The internal state uses 20% less memory and allows for only iterating those
nodes when necessary. The design trades the virtual call when iterating
interesting persistents in the GC prologue with calling out through the
EmbedderHeapTracer for each node which is also a virtual call. There is one less
iteration over the set of handles required though and the design is robust
against recursive GCs that mutate the embedder state during the prologue
callback.
Bug: chromium:923361
Change-Id: Idbacfbe4723cd12af9de21058a4792e51dc4df74
Reviewed-on: https://chromium-review.googlesource.com/c/1425523
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59183}
The API for serialized modules changed a bit in version 7.3. The old
API is deprecated, hence remove it in 7.4.
R=mstarzinger@chromium.org, ulan@chromium.org
Bug: chromium:912031
Change-Id: Ib1a55dc88db9e98aef03006caf8cdc1be4f85b9f
Reviewed-on: https://chromium-review.googlesource.com/c/1436020
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59122}
The implicit constructor is deprecated since version 7.3, hence can be
removed in 7.4.
R=ulan@chromium.org
Change-Id: I54a530240648c1721924195d7fccc157d483e6d8
Reviewed-on: https://chromium-review.googlesource.com/c/1436018
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59116}
V8 has no path in calling this API and thus there is no way for the
embedder to get notified about this event.
Bug: chromium:843903
Change-Id: I938675aed9191a292f21bae0fed0e3ea8acaf936
Reviewed-on: https://chromium-review.googlesource.com/c/1434377
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59087}
v8::Global may be used as a weak reference. In the case this reference is a
simple phantom reference, we need to update the internal state to be able to
clear the right slot once the object referred to is dead.
This reverts commit 18f32ca89c.
Bug: chromium:924220
Change-Id: I3caec77448b0c5fcb461c8f8b5015de2978b3931
Reviewed-on: https://chromium-review.googlesource.com/c/1430015
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59055}
This reverts commit 584f0b43b2.
Reason for revert: Breaks MSAN build - https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/24872
Original change's description:
> [api, global-handles] Fix moving weak Global<T>
>
> v8::Global may be used as a weak reference. In the case this reference is a
> simple phantom reference, we need to update the internal state to be able to
> clear the right slot once the object refered to is dead.
>
> Bug: chromium:924220
> Change-Id: I2ab7c3afcbe22988791faef406c284db03a43caf
> Reviewed-on: https://chromium-review.googlesource.com/c/1430101
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59040}
TBR=ulan@chromium.org,mlippautz@chromium.org
Change-Id: I19c3e929962203df4e1f24191d054180723b1c9d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:924220
Reviewed-on: https://chromium-review.googlesource.com/c/1430833
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59046}
v8::Global may be used as a weak reference. In the case this reference is a
simple phantom reference, we need to update the internal state to be able to
clear the right slot once the object refered to is dead.
Bug: chromium:924220
Change-Id: I2ab7c3afcbe22988791faef406c284db03a43caf
Reviewed-on: https://chromium-review.googlesource.com/c/1430101
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59040}
This reverts commit 22cb8d45c3.
Reason for revert: it is fundamentally wrong to fetch default
frame context using contextGroupId: contextGroupId is per page rather
then per frame.
Original change's description:
> inspector: teach v8Inspector to return default context
>
> This is a follow-up to https://chromium-review.googlesource.com/c/v8/v8/+/1173718
>
> R=kozy, pfeldman
> TBR=pfeldman
>
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
> Change-Id: I48b4ca5589505d03773477623654fa54703f0714
> Reviewed-on: https://chromium-review.googlesource.com/1175061
> Commit-Queue: Andrey Lushnikov <lushnikov@chromium.org>
> Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55133}
TBR=lushnikov@chromium.org,pfeldman@chromium.org,kozyatinskiy@chromium.org
NOTRY=true
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: Ide4246bfe75ccc8a4fb1f0c5dbc44ae4236cac5c
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Reviewed-on: https://chromium-review.googlesource.com/c/1419082
Commit-Queue: Andrey Lushnikov <lushnikov@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58906}
This new method returns no value and just verifies that the Maybe is not
Empty. This is intended to be used for functions like Object::Set that
return a Maybe<bool> but only use "emptiness" to indicate its result and
where ToLocalChecked() appears to be discarding information.
Also comments Object::Set to indicate that Check() is the preferred way
of asserting that the Set should always succeed.
R=yangguo
Bug: v8:8562
Change-Id: Ic3b45e42fa9ba0b53f1a764660a56041e64f087b
Reviewed-on: https://chromium-review.googlesource.com/c/1414912
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58852}
Now the embedder can instruct V8 to restore the initial heap limit
once the heap size drops below the given percentage of the heap limit.
Bug: chromium:922038
Change-Id: Ib668406c5d59c02b45a8eae7de96527ebc3f2b4d
Reviewed-on: https://chromium-review.googlesource.com/c/1411606
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58837}
When we run TurboFan compilation for WebAssembly on worker threads with
default priority, we see in bug reports (https://crbug.com/914757) and
in experiments that TurboFan compilation can block other, higher
priority tasks. Therefore we want to post TurboFan compilation tasks
with lower priority.
A quick prototype showed that if we run all WebAssembly compilation with
low priority, the problem described in https://crbug.com/914757 is
fixed.
R=adamk@chromium.orgCC=rmcilroy@chromium.org
Bug: chromium:920181
Change-Id: I85e2c0c6a96ff9ef165a23ef8eb531944b20f2b0
Reviewed-on: https://chromium-review.googlesource.com/c/1402790
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58792}
Two uses in the API needed adaptation; all other uses have already
been subsumed by the new implementation (previously known as
NeverReadOnlySpaceObjectPtr, here renamed to NeverReadOnlySpaceObject).
Bug: v8:3770
Change-Id: Idf0e4a98a407b9afea22e8790da34cf017b892a5
Reviewed-on: https://chromium-review.googlesource.com/c/1397671
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58620}
- Removes ModuleCompiledCallback typedef and Set function.
- Adds WasmStreaming::Client abstraction and Set function.
Bug: chromium:719172
Change-Id: I8a207b628394a7660bda73cde560da1e461248a7
Reviewed-on: https://chromium-review.googlesource.com/c/1377450
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58454}
Merging the temporary HeapObjectPtr back into HeapObject.
Bug: v8:3770
Change-Id: I5bcd23ca2f5ba862cf5b52955dca143e531c637b
Reviewed-on: https://chromium-review.googlesource.com/c/1386492
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58410}
C++ introduces the {alignof} keyword, which evaluates to an integral
constant defining the alignment of the given type. This makes
{V8_ALIGNOF} redundant.
R=ulan@chromium.org
Bug: v8:8562
Change-Id: I15a4022c2c396afba96360f218d8a04b17a9a448
Reviewed-on: https://chromium-review.googlesource.com/c/1379938
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58292}
C++ introduces the {alignas} keyword, which can be used with types or
integral constant expressions. Use this instead of the V8_ALIGNAS (for
types) or V8_ALIGNED (for integral constants) macros.
R=ulan@chromium.org
Bug: v8:8562
Change-Id: I54999b56a5715237f88c63d8543ef728a5b2eff5
Reviewed-on: https://chromium-review.googlesource.com/c/1379935
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58290}
This reverts commit c1bf25bb68.
Reason for revert: We got many regressions:
https://chromeperf.appspot.com/group_report?rev=58157
Original change's description:
> Enable 31bit Smis everywhere
>
> This is a experiment to see how performance is impacted. If we tank
> too much, we can revert this change.
>
> Change-Id: I01be33f5dd78aee6a5beecdc62adbaa6c3850eb1
> Bug: v8:8344
> Reviewed-on: https://chromium-review.googlesource.com/c/1355279
> Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58157}
TBR=jarin@chromium.org,sigurds@chromium.org,ishell@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:8344
Change-Id: I407cb99743a08452edcecfc2e945ef98509e8d32
Reviewed-on: https://chromium-review.googlesource.com/c/1375911
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58227}
Uses of the old API were removed from chromium in
https://crrev.com/c/1373749.
R=adamk@chromium.org
Bug: chromium:912031
Change-Id: I3fed4d72c147ef8e00ec96f869af2134e7ee71c8
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/1373769
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58205}
Currently v8::Promise::Then takes only one handler. It should take two handlers,
on_fulfilled and on_rejected like ECMAScript Promise.
Bug: chromium:912848
Change-Id: I08a20990a27b3f8621225fad42a8de1dad67796f
Reviewed-on: https://chromium-review.googlesource.com/c/1375509
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58204}
and update visitors to not look at raw part. This will allow to have effecient
access to embedder data once kTaggedSize is switched to 32-bit value.
Bug: v8:8518
Change-Id: Ia1875a5ac5f3fb85df5c5555b970fd88d9e8d7a4
Reviewed-on: https://chromium-review.googlesource.com/c/1369957
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58185}
Chromium does not use this name any more since
https://crrev.com/c/1369854, so we can deprecate it for the 7.3 branch.
R=adamk@chromium.org
Bug: v8:8238, chromium:912031
Change-Id: I0625f58a893f48d89dec76851af292c9c32af035
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/1370035
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58183}
Allows adding a label to strong retainers in PersistentValueMapBase and
its subclasses. These labels show up in DevTools and enable identifying
strong retainers of objects.
R: ulan@chromium.org
Change-Id: Id5e19507c40e44688c82a4caec89449b563a0e8b
Reviewed-on: https://chromium-review.googlesource.com/c/1372069
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58177}
This is a experiment to see how performance is impacted. If we tank
too much, we can revert this change.
Change-Id: I01be33f5dd78aee6a5beecdc62adbaa6c3850eb1
Bug: v8:8344
Reviewed-on: https://chromium-review.googlesource.com/c/1355279
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58157}
These functions have been marked V8_DEPRECATE_SOON for a long time,
now all uses have been removed from Chrome, mark them as deprecated.
BUG=v8:7287,v8:8238
Change-Id: I47b23588231ca510ec2475cb476e4134c05e162a
Reviewed-on: https://chromium-review.googlesource.com/c/1356517
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58154}
This is purely a renaming change. The ES spec uses the term 'detach'
for the process of removing the backing store of a typed array, while
V8 uses the historical term 'neuter'. Update our internal implementation,
including method names and flag names, to match the spec.
Note that some error messages still use the term 'neuter' since error
messages are asserted by some embedder tests, like layout tests.
R=bmeurer@chromium.org, yangguo@chromium.org, mstarzinger@chromium.org, mlippautz@chromium.org
BUG=chromium:913887
Change-Id: I62f1c3ac9ae67ba01d612a5221afa3d92deae272
Reviewed-on: https://chromium-review.googlesource.com/c/1370036
Commit-Queue: Ben Titzer <titzer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58149}
The class declaration regexp in cpplint did not catch classes decorated
by V8_EXPORT, V8_EXPORT_PRIVATE or any other decorator containing
digits.
This will be fixed in https://github.com/google/styleguide/pull/422.
This CL already prepares the code base by fixing all errors that will
be found after that change.
Some follow-up changes were needed to fix implicit conversion that are
not taken any more now.
R=mstarzinger@chromium.org
Bug: v8:8562
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I03713bd04dbc3f54b89a6c857a93463139aa5efd
Reviewed-on: https://chromium-review.googlesource.com/c/1367751
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58143}
This callback is not being used by now, so we can just change it
without the deprecation dance.
Instead of the WasmModuleObject, it now receives the new
CompiledWasmModule wrapper which contains a shared pointer to the
NativeModule. This is all that's needed for serialization.
Some classes are pulled out of WasmModuleObject to allow reuse.
R=adamk@chromium.org, mstarzinger@chromium.org
CC=bbudge@chromium.org
Bug: chromium:912031
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Icedb64efa92e66bec45cf8742942a07ae22f59c8
Reviewed-on: https://chromium-review.googlesource.com/c/1363140
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58142}
https://crrev.com/c/1343709 fixed GetIncumbentContext to work
with ASan, however, GetIncumbentContext didn't work well with
MSan because MSan uses a simulator which supports yet another
separate stack frame.
This patch fixes GetIncumbentContext so that it works well
with not only ASan but also MSan simply following the same way
as v8::TryCatch does.
i::GetCurrentStackPosition() solves the issue of ASan and
SafeStack (native but separate stack frame), and
i::SimulatorStack solves the issue of MSan (simulator stack
frame).
Bug: chromium:888867, chromium:866610
Change-Id: Id803cbfd17fb1b1d9b8ee34c4802768f3a2f8e79
Reviewed-on: https://chromium-review.googlesource.com/c/1356691
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58096}
A spec change to simplify IsRegExp has been proposed:
https://github.com/tc39/ecma262/pull/1318
This CL adds use counters for cases in which the spec change would
alter behavior:
1. o[@@match] is trueish but o is not a JSRegExp
2. o[@@match] is falseish (but not undefined) and o is a JSRegExp
This is the V8 side of required changes.
The Chromium-side CL: https://crrev.com/c/1360730
Drive-by: TNodeify IsRegExp.
Tbr: yangguo@chromium.org
Bug: v8:8522
Change-Id: I3766e02977f256a80d0e59472d3bafa9c692af9e
Reviewed-on: https://chromium-review.googlesource.com/c/1360630
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58064}
A WasmModuleObject represents an instance of WebAssembly.Module. It is
called WasmModuleObject internally, so also use that name externally.
We still have a typedef for WasmCompiledModule which will be deprecated
once chromium has been updated to use WasmModuleObject.
R=titzer@chromium.org, adamk@chromium.org
Bug: v8:8238, chromium:912031
Change-Id: I2d7708d4dc183cb4f4714f741b1ea0c153014430
Reviewed-on: https://chromium-review.googlesource.com/c/1362048
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58055}
It's possible that we encounter incorrect SP or FP values while
unwinding the stack. One reason is that third-party code like virus
protection may change the stack. If we encounter values for SP or FP
that don't make sense, we should bail out of unwinding and return false.
Bug: v8:8116, chromium:909957
Change-Id: I630fef3f619382c7035be50b86072be349ed185c
Reviewed-on: https://chromium-review.googlesource.com/c/1358514
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58018}
