Reason for revert:
node.js is updated now
Original issue's description:
> Revert of [api] Restrict Template::Set to take templates or primitive values (patchset #1 id:1 of https://codereview.chromium.org/1839983002/ )
>
> Reason for revert:
> Breaks node.js
>
> Original issue's description:
> > [api] Restrict Template::Set to take templates or primitive values
> >
> > Embedders that passed in non-primitive values should either use
> > getters/setters (templates) or install a native data property,
> > otherwise, the values would all result in cross-context leaks
> >
> > BUG=none
> > R=verwaest@chromium.org
> > LOG=y
> >
> > Committed: https://crrev.com/eebdee8eafa97849cc70c25f3fecf1b075bac248
> > Cr-Commit-Position: refs/heads/master@{#35244}
>
> TBR=verwaest@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=none
>
> Committed: https://crrev.com/e1674a24ca3cb92bb4e58d368b25767bd61a0dfa
> Cr-Commit-Position: refs/heads/master@{#35264}
TBR=verwaest@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=none
Review URL: https://codereview.chromium.org/1894993002
Cr-Commit-Position: refs/heads/master@{#35572}
Reason for revert:
performance impact
Original issue's description:
> Correctly annotate eval origin.
>
> There were a couple of issues with it:
> - interpreter is not supported
> - the source position was just accidentally correct for full-codegen
> - the eval origin could have been cached
>
> Also fixes a few other places to use AbstractCode.
>
> R=mstarzinger@chromium.org
>
> Committed: https://crrev.com/2f3a171adc9e620c2235bf0562145b9d4eaba66d
> Cr-Commit-Position: refs/heads/master@{#35257}
>
> Committed: https://crrev.com/ad4e8a27963b704bb70ec8bac0991c57296b1d16
> Cr-Commit-Position: refs/heads/master@{#35481}
TBR=mstarzinger@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1888013002
Cr-Commit-Position: refs/heads/master@{#35491}
This patch replaces the unused 'take_snapshot' parameter on FatalProcessOutOfMemory()
with a 'is_heap_oom' parameter. The parameter is set to true on error paths where the
JS heap is out of memory, as distinct from a malloc() failure i.e. process out of memory.
The message output to stderr or passed to embedding applications via FatalErrorCallback
is 'Javascript heap out of memory' rather than 'process out of memory'.
BUG=
R=jochen@chromium.org, verwaest@chromium.org, michael_dawson@ca.ibm.com
Review URL: https://codereview.chromium.org/1873443002
Cr-Commit-Position: refs/heads/master@{#35431}
- MemoryAllocator is now part of Heap
- CodeRange is now part of MemoryAllocator
BUG=chromium:581076
LOG=N
Review URL: https://codereview.chromium.org/1862653002
Cr-Commit-Position: refs/heads/master@{#35294}
Reason for revert:
Breaks node.js
Original issue's description:
> [api] Restrict Template::Set to take templates or primitive values
>
> Embedders that passed in non-primitive values should either use
> getters/setters (templates) or install a native data property,
> otherwise, the values would all result in cross-context leaks
>
> BUG=none
> R=verwaest@chromium.org
> LOG=y
>
> Committed: https://crrev.com/eebdee8eafa97849cc70c25f3fecf1b075bac248
> Cr-Commit-Position: refs/heads/master@{#35244}
TBR=verwaest@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=none
Review URL: https://codereview.chromium.org/1860003002
Cr-Commit-Position: refs/heads/master@{#35264}
There were a couple of issues with it:
- interpreter is not supported
- the source position was just accidentally correct for full-codegen
- the eval origin could have been cached
Also fixes a few other places to use AbstractCode.
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/1854713002
Cr-Commit-Position: refs/heads/master@{#35257}
Embedders that passed in non-primitive values should either use
getters/setters (templates) or install a native data property,
otherwise, the values would all result in cross-context leaks
BUG=none
R=verwaest@chromium.org
LOG=y
Review URL: https://codereview.chromium.org/1839983002
Cr-Commit-Position: refs/heads/master@{#35244}
We expect that the majority of malloc'd memory held by V8 is allocated
in Zone objects. Introduce an Allocator class that is used by Zones to
manage memory, and allows for querying the current usage.
BUG=none
R=titzer@chromium.org,bmeurer@chromium.org,jarin@chromium.org
LOG=n
TBR=rossberg@chromium.org
Review URL: https://codereview.chromium.org/1847543002
Cr-Commit-Position: refs/heads/master@{#35196}
Reason for revert:
Violates ES6 spec (crbug.com/4850), and implementation was over-eager. Will revert for now.
Original issue's description:
> Parser: Make skipping HTML comments optional.
>
> API change: This adds a new flag skip_html_comments to v8::ScriptOriginOptions. This flag controls whether V8 will attempt to honour HTML-style comments in JS sources.
>
> (That is: Gracefully ignore <!-- ... ---> in JS sources, which was a popular technique in the early days of JavaScript, to prevent non-JS-enabled browsers from displaying script sources to uses.)
>
> The flag defaults to 'true' when using v8::ScriptOrigin constructor, which preserves the existing behaviour. Embedders which are happy with the existing behaviour will thus not need any changes.
>
> BUG=chromium:573887
> LOG=Y
>
> Committed: https://crrev.com/91d344288aa51ed03eaaa1cb3e368ac1e82f0173
> Cr-Commit-Position: refs/heads/master@{#34904}
TBR=jochen@chromium.org,rossberg@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:573887, v8:4850
LOG=Y
Review URL: https://codereview.chromium.org/1817163003
Cr-Commit-Position: refs/heads/master@{#34958}
Code that we want to keep after warming up may have context-dependent
inline caches. Clear these to avoid running into IC misses after
deserialization.
R=vogelheim@chromium.org
BUG=v8:4836
LOG=N
Review URL: https://codereview.chromium.org/1811263002
Cr-Commit-Position: refs/heads/master@{#34945}
API change: This adds a new flag skip_html_comments to v8::ScriptOriginOptions. This flag controls whether V8 will attempt to honour HTML-style comments in JS sources.
(That is: Gracefully ignore <!-- ... ---> in JS sources, which was a popular technique in the early days of JavaScript, to prevent non-JS-enabled browsers from displaying script sources to uses.)
The flag defaults to 'true' when using v8::ScriptOrigin constructor, which preserves the existing behaviour. Embedders which are happy with the existing behaviour will thus not need any changes.
BUG=chromium:573887
LOG=Y
Review URL: https://codereview.chromium.org/1801203002
Cr-Commit-Position: refs/heads/master@{#34904}
A startup snapshot is considered cold when it does not contain any
function code. We can now create a warm startup snapshot from a cold one
by running a warm-up script. Functions exercised by the warm-up script
are compiled and its code included in the warm startup snapshot. Side
effects caused by the warm-up script does not persist.
R=vogelheim@chromium.org
BUG=v8:4836
LOG=Y
Review URL: https://codereview.chromium.org/1805903002
Cr-Commit-Position: refs/heads/master@{#34849}
The current trace scoping failed to accomplish what it intended to do
it failed in 2 aspects:
First, when new trace events were added in
https://codereview.chromium.org/1770353002/ they escaped the scopes.
Secondly, a webgl code interacts with the V8 Objects directly using
the EXECUTION_PRIMITIVE context that does not generate any TRACE_EVENTs
resulting in a lot of empty scopes (breaking analysis on TBM webgl benchmarks)
https://crbug.com/590761.
I am removing the calls for now until figuring out a better approach for both issues.
BUG=590761,v8:4565
LOG=N
Review URL: https://codereview.chromium.org/1807433002
Cr-Commit-Position: refs/heads/master@{#34799}
Modules already have a separate entrypoint into the engine (at the moment,
this is v8::ScriptCompiler::CompileModule, though that will change to
something like ParseModule). This meant that requiring a commandline flag
simply added an extra complexity burden on embedders. By removing the v8
flag, this lets embedders use their own flagging mechanism (such as d8's
"--module", or Blink's RuntimeEnabledFeatures) to control whether
modules are to be used.
Also remove old modules tests that were being skipped (since they test
very old, pre-ES2015 modules syntax).
R=littledan@chromium.org
BUG=v8:1569, chromium:594639
LOG=y
Review URL: https://codereview.chromium.org/1804693002
Cr-Commit-Position: refs/heads/master@{#34764}
This is a pure refactoring and renaming of methods in the compiler API
with the goal to increase readability. Also the compiler API is moved to
the top of the file, as it is the central piece in that file.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1766623004
Cr-Commit-Position: refs/heads/master@{#34579}
This avoids a minor unnecessary inefficiency (GetRoot) in setting up the LookupIterator.
BUG=
Review URL: https://codereview.chromium.org/1767123002
Cr-Commit-Position: refs/heads/master@{#34560}
This scope is used to control microtasks execution when MicrotasksPolicy::kScoped is engaged.
Attempt #2. First one was reverted due to chromium breakage: SetAutorunMicrotasks(false) was broken.
BUG=chromium:585949
LOG=Y
TEST=ScopedMicrotasks
Review URL: https://codereview.chromium.org/1741893003
Cr-Commit-Position: refs/heads/master@{#34504}
Reason for revert:
[Sheriff] Speculative. Seems to break a bunch of webkit tests and causes timeouts:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/5103
Please rebase upstream if intended.
Original issue's description:
> Introduce v8::MicrotasksScope.
>
> This scope is used to control microtasks execution when MicrotasksPolicy::kScoped is engaged.
>
> BUG=chromium:585949
> LOG=Y
> TEST=ScopedMicrotasks
>
> Committed: https://crrev.com/db77cec242dbdf8ee26da8232fa930270429f253
> Cr-Commit-Position: refs/heads/master@{#34472}
TBR=jochen@chromium.org,adamk@chromium.org,dgozman@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:585949
Review URL: https://codereview.chromium.org/1762943002
Cr-Commit-Position: refs/heads/master@{#34480}
This scope is used to control microtasks execution when MicrotasksPolicy::kScoped is engaged.
BUG=chromium:585949
LOG=Y
TEST=ScopedMicrotasks
Review URL: https://codereview.chromium.org/1741893003
Cr-Commit-Position: refs/heads/master@{#34472}
This patch adds the newly added support for contexts in V8 Tracing, as well
as use it to mark all the entry points for a V8 Isolate.
Update for reland: The current tracing interface needs to be updated (AddTraceEvent),
but the embedders need to migrate to the new version before removing the old version.
(Reland of: https://codereview.chromium.org/1686233002)
The revert happened because the 2 signatures of the old and new AddTraceEvent where different
so it threw an overload-virtual error on cross arm debug. This issue is temporary, and to solve
it, I added an implementation of the old and new everywhere until the embedder implements the new.
BUG=v8:4565
LOG=N
R=jochen@chromium.org
Review URL: https://codereview.chromium.org/1704253002
Cr-Commit-Position: refs/heads/master@{#34332}
This calback is run after an attempt to run microtasks.
BUG=chromium:585949
LOG=Y
Review URL: https://codereview.chromium.org/1731773005
Cr-Commit-Position: refs/heads/master@{#34305}
This new callback is similar to CallCompletedCallback, but is executed before the call has been made.
Added Isolate* parameter to CallCompletedCallback, marking previous one as deprecated.
BUG=chromium:585949
LOG=Y
Review URL: https://codereview.chromium.org/1689863002
Cr-Commit-Position: refs/heads/master@{#34167}
Reason for revert:
See Domenic's comment on the V8 bug.
Original issue's description:
> Use displayName in Error.stack rendering if present.
>
> BUG=v8:4761
> LOG=y
>
> Committed: https://crrev.com/953874e974037e7e96ef282a7078760ccc905878
> Cr-Commit-Position: refs/heads/master@{#34105}
TBR=jochen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4761
Review URL: https://codereview.chromium.org/1713663002
Cr-Commit-Position: refs/heads/master@{#34129}
This frees up one bit in FunctionKind, which I plan to make slightly
more syntactic info about functions available in SharedFunctionInfo
(needed for ES2015 Function.name support).
BUG=v8:3956, v8:4760
LOG=n
Review URL: https://codereview.chromium.org/1704223002
Cr-Commit-Position: refs/heads/master@{#34125}
By short-cutting the DefineOwnProperty machinery similar to how ForceSet
does it, we should get a few cycles out of this heavily used API.
BUG=chromium:569668
R=verwaest@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1702353002
Cr-Commit-Position: refs/heads/master@{#34102}
This CL adds a TRACE_EVENT where there is an isolated LOG, a HistogramTimer
or a TimerEvent.
Once we have a d8 tracing controller, all TimerEvents will be removed since
they do not provide an added value over TRACE_EVENTs. HistogramTimers will
remain, but their functionality will be limited to Histograms only.
BUG=v8:4562
LOG=N
Review URL: https://codereview.chromium.org/1707563002
Cr-Commit-Position: refs/heads/master@{#34099}
This patch adds the newly added support for contexts in V8 Tracing, as well
as use it to mark all the entry points for a V8 Isolate.
BUG=v8:4565
LOG=N
Review URL: https://codereview.chromium.org/1686233002
Cr-Commit-Position: refs/heads/master@{#34092}
Previously ObjectTemplate::New() logic relied on the fact that all the accessor properties are already installed in the initial map of the function object of the constructor FunctionTemplate.
When the FunctionTemplate were instantiated the accessors of the instance templates from the whole inheritance chain were accumulated and added to the initial map.
ObjectTemplate::SetSetAccessor() used to explicitly ensure that the ObjectTemplate has a constructor and therefore an initial map to add all accessors to.
The new approach is to add all the accessors and data properties to the object exactly when the ObjectTemplate is instantiated. In order to keep it fast we now cache the object boilerplates in the Isolate::template_instantiations_cache (the former function_cache), so the object creation turns to be a deep copying of the boilerplate object.
BUG=chromium:579009
LOG=Y
Committed: https://crrev.com/6a118774244d087b5979e9291d628a994f21d59d
Cr-Commit-Position: refs/heads/master@{#33674}
Review URL: https://codereview.chromium.org/1642223003
Cr-Commit-Position: refs/heads/master@{#33798}
Reason for revert:
Fails a lot of layout tests and blocks the roll. Can be easily reproduced with a local Chromium checkout.
Reference: https://codereview.chromium.org/1652413003/
Original issue's description:
> [api] Make ObjectTemplate::SetNativeDataProperty() work even if the ObjectTemplate does not have a constructor.
>
> Previously ObjectTemplate::New() logic relied on the fact that all the accessor properties are already installed in the initial map of the function object of the constructor FunctionTemplate.
> When the FunctionTemplate were instantiated the accessors of the instance templates from the whole inheritance chain were accumulated and added to the initial map.
> ObjectTemplate::SetSetAccessor() used to explicitly ensure that the ObjectTemplate has a constructor and therefore an initial map to add all accessors to.
>
> The new approach is to add all the accessors and data properties to the object exactly when the ObjectTemplate is instantiated. In order to keep it fast we now cache the object boilerplates in the Isolate::template_instantiations_cache (the former function_cache), so the object creation turns to be a deep copying of the boilerplate object.
>
> This CL also prohibits non-primitive properties in ObjectTemplate to avoid potential cross-context leaks.
>
> BUG=chromium:579009
> LOG=Y
>
> Committed: https://crrev.com/6a118774244d087b5979e9291d628a994f21d59d
> Cr-Commit-Position: refs/heads/master@{#33674}
TBR=verwaest@chromium.org,ishell@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:579009
Review URL: https://codereview.chromium.org/1660263003
Cr-Commit-Position: refs/heads/master@{#33698}
Previously ObjectTemplate::New() logic relied on the fact that all the accessor properties are already installed in the initial map of the function object of the constructor FunctionTemplate.
When the FunctionTemplate were instantiated the accessors of the instance templates from the whole inheritance chain were accumulated and added to the initial map.
ObjectTemplate::SetSetAccessor() used to explicitly ensure that the ObjectTemplate has a constructor and therefore an initial map to add all accessors to.
The new approach is to add all the accessors and data properties to the object exactly when the ObjectTemplate is instantiated. In order to keep it fast we now cache the object boilerplates in the Isolate::template_instantiations_cache (the former function_cache), so the object creation turns to be a deep copying of the boilerplate object.
This CL also prohibits non-primitive properties in ObjectTemplate to avoid potential cross-context leaks.
BUG=chromium:579009
LOG=Y
Review URL: https://codereview.chromium.org/1642223003
Cr-Commit-Position: refs/heads/master@{#33674}
It allows embedder to inject a stack sample on demand.
BUG=chromium:579191
LOG=N
Review URL: https://codereview.chromium.org/1631043002
Cr-Commit-Position: refs/heads/master@{#33527}
Reason for revert:
The random nature of the tests caused the following buildbot to fail: https://build.chromium.org/p/client.v8/builders/V8%20Linux%20gcc%204.8/builds/4724/steps/Check/logs/stdio
Original issue's description:
> [profiler] Implement POC Sampling Heap Profiler
>
> This implements a proof-of-concept sampling based heap profiler inspired by
> tcmalloc's heap profiler [1] and Go's mprof/memprofile [2].
>
> The basic idea is the sample allocations using a randomized Poisson process. At
> any point in time we can cheaply request the set of live sample objects that
> should be a representative sample of heap. Samples include stack-traces from the
> allocation sites, making this an effective tool for memory leak debugging.
>
> Unlike AllocationTracking, this is intended to be cheap and usable online in
> production.
>
> The proof-of-concept is only sampling new-space allocations at this point.
> Support for sampling paged space and native allocations is anticipated in the
> future.
>
> [1] http://goog-perftools.sourceforge.net/doc/heap_profiler.html
> [2] http://blog.golang.org/profiling-go-programs
>
> Committed: https://crrev.com/e5a9947811db9c9e23557dbad27f8b8a349b3262
> Cr-Commit-Position: refs/heads/master@{#33448}
TBR=jochen@chromium.org,alph@chromium.org,hpayer@chromium.org,yangguo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1615173002
Cr-Commit-Position: refs/heads/master@{#33449}
This implements a proof-of-concept sampling based heap profiler inspired by
tcmalloc's heap profiler [1] and Go's mprof/memprofile [2].
The basic idea is the sample allocations using a randomized Poisson process. At
any point in time we can cheaply request the set of live sample objects that
should be a representative sample of heap. Samples include stack-traces from the
allocation sites, making this an effective tool for memory leak debugging.
Unlike AllocationTracking, this is intended to be cheap and usable online in
production.
The proof-of-concept is only sampling new-space allocations at this point.
Support for sampling paged space and native allocations is anticipated in the
future.
[1] http://goog-perftools.sourceforge.net/doc/heap_profiler.html
[2] http://blog.golang.org/profiling-go-programs
Review URL: https://codereview.chromium.org/1555553002
Cr-Commit-Position: refs/heads/master@{#33448}
Unify Object::ToObject and Execution::ToObject, and unify all users to
go to Object::ToObject directly. Also remove some dead code from the
frame details debug API.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1589323002
Cr-Commit-Position: refs/heads/master@{#33327}
Almost all of the Date builtins always call into C++ at least once
anyway, so parsing, compiling and executing the JavaScript wrappers
is just a waste of time. The most important part here is the Date
constructor itself, which is one of the blockers for new.target in
TurboFan, because compiling the Date constructor takes too much time
with TurboFan (for no reason since we end up in C++ anway).
R=cbruni@chromium.org
Review URL: https://codereview.chromium.org/1556333002
Cr-Commit-Position: refs/heads/master@{#33109}
According to the ES2015 specification, bound functions are exotic
objects, and thus don't need to be implemented as JSFunctions. So
we introduce a new JSBoundFunction type to represent bound functions
and make them optimizable. This already improves the performance of
calling or constructing bound functions by 10-100x depending on the
use case because we avoid the crazy dance between JavaScript and C++
that was implemented in v8natives.js previously.
There's still room for improvement in the performance of actually
creating bound functions, which is also relevant in practice, but
we already have a plan how to accomplish that later.
The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
BUG=chromium:535408, chromium:571299, v8:4629
LOG=n
Committed: https://crrev.com/ca8623eaa468cba65a5adafcdfb4615966f43ce2
Cr-Commit-Position: refs/heads/master@{#33042}
Review URL: https://codereview.chromium.org/1542963002
Cr-Commit-Position: refs/heads/master@{#33044}
Reason for revert:
Breaks arm64 sim nosnap: https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug/builds/805/steps/Check/logs/function-bind
Original issue's description:
> [runtime] Introduce dedicated JSBoundFunction to represent bound functions.
>
> According to the ES2015 specification, bound functions are exotic
> objects, and thus don't need to be implemented as JSFunctions. So
> we introduce a new JSBoundFunction type to represent bound functions
> and make them optimizable. This already improves the performance of
> calling or constructing bound functions by 10-100x depending on the
> use case because we avoid the crazy dance between JavaScript and C++
> that was implemented in v8natives.js previously.
>
> There's still room for improvement in the performance of actually
> creating bound functions, which is also relevant in practice, but
> we already have a plan how to accomplish that later.
>
> The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
>
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
> BUG=chromium:535408, chromium:571299, v8:4629
> LOG=n
>
> Committed: https://crrev.com/ca8623eaa468cba65a5adafcdfb4615966f43ce2
> Cr-Commit-Position: refs/heads/master@{#33042}
TBR=cbruni@chromium.org,hpayer@chromium.org,yangguo@chromium.org,akos.palfi@imgtec.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:535408, chromium:571299, v8:4629
Review URL: https://codereview.chromium.org/1552473002
Cr-Commit-Position: refs/heads/master@{#33043}
According to the ES2015 specification, bound functions are exotic
objects, and thus don't need to be implemented as JSFunctions. So
we introduce a new JSBoundFunction type to represent bound functions
and make them optimizable. This already improves the performance of
calling or constructing bound functions by 10-100x depending on the
use case because we avoid the crazy dance between JavaScript and C++
that was implemented in v8natives.js previously.
There's still room for improvement in the performance of actually
creating bound functions, which is also relevant in practice, but
we already have a plan how to accomplish that later.
The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
BUG=chromium:535408, chromium:571299, v8:4629
LOG=n
Review URL: https://codereview.chromium.org/1542963002
Cr-Commit-Position: refs/heads/master@{#33042}
Add API-accessors for [[ProxyTarget]], [[ProxyHandler]]. Additionally
create new proxies and revoke proxies via the API.
BUG=v8:1543
LOG=n
Review URL: https://codereview.chromium.org/1542943002
Cr-Commit-Position: refs/heads/master@{#33013}
If many threads use the same Isolate (or many Isolates) and then
terminate, their PerIsolateThreadData objects are never cleaned
up, resulting in a slow memory leak and, worse, the
PerIsolateThreadData chain getting larger and larger, adversely
affecting performance.
In this situation, embedders will now be encouraged to apply
DiscardThreadSpecificMetadata against any Isolate a thread is
done with, especially if the thread is about to terminate.
Note that it is harmless to run DiscardThreadSpecificMetadata
against an Isolate for which a thread has no thread data and
per-Isolate thread data can be reestablished if a thread starts
using an Isolate again after running DiscardThreadSpecificMetadata
against it.
It is, however, an embedder error to run
DiscardThreadSpecificMetadata against an Isolate in thread with a
Locker for the Isolate in the stack or against an Entered Isolate.
This change cannot cause any change in behavior in existing apps
as the only added coded can only be reached via the new
DiscardThreadSpecificMetadata method.
R=Jakob, jochen
BUG=
Review URL: https://codereview.chromium.org/1522703002
Cr-Commit-Position: refs/heads/master@{#32909}
The main impetus is to improve performance when --harmony-tostring
is enabled, thanks to using a generic property load instead of a
megamorphic IC.
This also reduces duplication, as the API function
v8::Object::ObjectProtoToString can share the runtime implementation.
The only functional change in this patch is to drop an accidental difference
between the JS and API implementations: the arguments object should toString
as "[object Arguments]". The JS side was corrected in
https://code.google.com/p/v8/source/detail?r=3279, but the API version was
missed in that patch.
BUG=chromium:555127, v8:3502
LOG=n
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1509533003
Cr-Commit-Position: refs/heads/master@{#32777}
Reason for revert:
Meeh. Now "V8 Linux - gcmole" bot has issues; apparently due to a somewhat exotic builder configuration.
Original issue's description:
> Re-land FastAccessorBuilder.
>
> ... using the RawMachineAssembler and the work in crrev.com/1407313004.
>
> The original change collided with crrev.com/1513543003.
>
> BUG=chromium:508898
> LOG=Y
>
> Committed: https://crrev.com/515d9ccd8e6df7bf2ca01e2a55aaad30226399e1
> Cr-Commit-Position: refs/heads/master@{#32742}
>
> patch from issue 1474543004 at patchset 260001 (http://crrev.com/1474543004#ps260001)
>
> Committed: https://crrev.com/ee5c38d7db907ff86dd4049721c0cb4bc90a6c4d
> Cr-Commit-Position: refs/heads/master@{#32753}
TBR=epertoso@chromium.org,mstarzinger@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:508898
Review URL: https://codereview.chromium.org/1517683002
Cr-Commit-Position: refs/heads/master@{#32754}
... using the RawMachineAssembler and the work in cl/1407313004
BUG=chromium:508898
LOG=Y
Review URL: https://codereview.chromium.org/1474543004
Cr-Commit-Position: refs/heads/master@{#32742}
In particular, return Maybe<bool> from any function that can throw, and
use MAYBE_RETURN and RETURN_FAILURE macros consistently where applicable.
No change in behavior intended.
Review URL: https://codereview.chromium.org/1513713002
Cr-Commit-Position: refs/heads/master@{#32723}
The Promise::Chain logic is moved to a helper function to avoid
a violation of deprecated function usage.
R=rossberg,jochen
BUG=v8:3237
LOG=Y
Review URL: https://codereview.chromium.org/1477023002
Cr-Commit-Position: refs/heads/master@{#32670}
Fix some minor issues that the linter is complaining about
R=jochen
Review URL: https://codereview.chromium.org/1507823002
Cr-Commit-Position: refs/heads/master@{#32667}
Split out of PropertyAttributes, and used for all filtering purposes.
Also moved PropertyAttributes into the v8::internal:: namespace.
No change in behavior intended.
Review URL: https://codereview.chromium.org/1492653004
Cr-Commit-Position: refs/heads/master@{#32525}
This replaces internal GetConstructorName with toStringTag, .constructor's name
and class_name. This entirely changes how the name is computed for use in
devtools.
BUG=chromium:529177
LOG=n
Review URL: https://codereview.chromium.org/1435273002
Cr-Commit-Position: refs/heads/master@{#32374}
Moves all files related to AST and scopes into ast/,
and all files related to scanner & parser to parsing/.
Also eliminates a couple of spurious dependencies.
R=mstarzinger@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1481613002
Cr-Commit-Position: refs/heads/master@{#32351}
ES6 section 12.2.8.1 states that flags for regular expression literals
must be checked during parsing and invalid flags are early errors. This
change adapts the Scanner and (Pre)Parser to act according to the spec.
This is also a prerequisite to unify the handling of literal creation
(for Objects, Arrays, Regexps, and at some point Classes).
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1472323002
Cr-Commit-Position: refs/heads/master@{#32273}
Following logic is using for getting function name in JSFunction::GetDebugName:
1. if function has displayName and its type is string then use it
2. if function has defined property Function.name as value and its type string then use it
3. otherwise use SharedFunctionInfo::DebugName as functionName.
JSFunction::GetDebugName is exposed in V8 API and in FunctionMirror interface.
BUG=chromium:17356
R=yangguo@chromium.org,mstarzinger@chromium.org
LOG=Y
Review URL: https://codereview.chromium.org/1449473005
Cr-Commit-Position: refs/heads/master@{#32124}
This removes several methods from JSFunction that just delegate to
SharedFunctionInfo. These methods are especially dangerous when they
hide the fact that they potentially affect all function instances
deriving from the same underlying SharedFunctionInfo.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1417213005
Cr-Commit-Position: refs/heads/master@{#31792}
This CL fixes an invalid cast in Slow_ArrayConcat (a Proxy on a DICTIONARY_ELEMENTS array's prototype chain).
It also adds some comments and minor drive-by refactorings to other PrototypeIterator use sites.
R=verwaest@chromium.org
Review URL: https://codereview.chromium.org/1402393003
Cr-Commit-Position: refs/heads/master@{#31738}
V8 zaps (writes 0xdeadbeef) over the mmapped regions when in debug mode.
This causes more resident size than displayed in tracing. So, This CL
adds an api to tell if zapping is done.
BUG=546492
LOG=Y
Review URL: https://codereview.chromium.org/1419523008
Cr-Commit-Position: refs/heads/master@{#31716}
Now that we have a C++ implementation, calling into JS builtins is needlessly inefficient.
Review URL: https://codereview.chromium.org/1410553006
Cr-Commit-Position: refs/heads/master@{#31637}
Adds a scavenge GC pass that collects unmodified references instead of
processing object groups. This mode can be controlled by setting
FLAG_scavenge_reclaim_unmodified_objects. By default this is turned off.
Also, modified a test case to suit the handle the new GC pass.
BUG=v8:4421
LOG=N
Review URL: https://codereview.chromium.org/1410593005
Cr-Commit-Position: refs/heads/master@{#31599}
This is in preparation of implementing Reflect.set.
R=rossberg
BUG=
Review URL: https://codereview.chromium.org/1394983005
Cr-Commit-Position: refs/heads/master@{#31501}
This will allow us to remove background idle notification calls in Chrome.
BUG=chromium:490559
LOG=NO
Review URL: https://codereview.chromium.org/1406303008
Cr-Commit-Position: refs/heads/master@{#31464}
This reverts commit 24aca87090.
The API makes these values appear to be per-isolate, when in fact
they are per-context. Installing the results of these on Template
objects instantiated in multiple contexts can result in security
violations and contexts being retained indefinitely.
An alternative mechanism for using these in a sensible way is
provided by https://crrev.com/1409593002
BUG=
LOG=N
R=jochen@chromium.org, adamk@chromium.org
Review URL: https://codereview.chromium.org/1415663002
Cr-Commit-Position: refs/heads/master@{#31417}
Allow access to Array Iterator through the API, in order to simplify
setting up interfaces which use these methods. This applies to
WebIDL interfaces with "length" attributes returning integer types and
a getter taking an unsigned long type.
BUG=
LOG=N
R=adamk@chromium.org
Review URL: https://codereview.chromium.org/1378403004
Cr-Commit-Position: refs/heads/master@{#31152}
Symbols marked as "well-known" now return an undefined value when loaded with a failed access check, instead of throwing.
Currently, only @@isConcatSpreadable is marked as well-known, until the correct behaviour is properly specified.
BUG=v8:4289, 507553
LOG=N
R=adamk@chromium.org, jochen@chromium.org, verwaest@chromium.org
Review URL: https://codereview.chromium.org/1230793002
Cr-Commit-Position: refs/heads/master@{#31131}
The --abort-on-uncaught-exception command line switch makes
Isolate::Throw abort if the error being thrown cannot be caught by a
try/catch block.
Embedders may want to use other mechanisms than try/catch blocks to
handle uncaught exceptions. For instance, Node.js has "domain" objects
that have error handlers that can handle uncaught exception like
following:
var d = domain.create();
d.on('error', function onError(err) {
console.log('Handling error');
});
d.run(function() {
throw new Error("boom");
});
These error handlers are called by isolates' message listeners.
If --abort-on-uncaught-exception is *not* used, the isolate's
message listener will be called, which will in turn call the domain's
error handler. The process will output 'Handling error' and will exit
successfully (not due to an uncaught exception). This is the behavior
that Node.js users expect.
However, if --abort-on-uncaught-exception is used and when throwing an
error within a domain that has an error handler, the process will abort
and the domain's error handler will not be called. This is not the
behavior that Node.js users expect.
Having a SetAbortOnUncaughtExceptionCallback API allows embedders to
determine when it's not appropriate to abort and instead handle the
exception via the isolate's message listener.
In the example above, Node.js would set a custom callback with
SetAbortOnUncaughtExceptionCallback that would be implemented as
following (the sample code has been simplified to remove what's not
relevant to this change):
bool ShouldAbortOnUncaughtException(Isolate* isolate) {
return !IsDomainActive();
}
Now when --abort-on-uncaught-exception is used, Isolate::Throw would
call that callback and determine that it should not abort if a domain
with an error handler is active. Instead, the isolate's message listener
would be called and the error would be handled by the domain's error
handler.
I believe this can also be useful for other embedders.
BUG=
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1375933003
Cr-Commit-Position: refs/heads/master@{#31111}
We need to do other things with this bindings object, like store a feedback vector. Therefore, it's a good time to wrap it up in a helper class.
BUG=
Review URL: https://codereview.chromium.org/1369293003
Cr-Commit-Position: refs/heads/master@{#31044}
Continuing unification of properties/elements handling, the new
LookupIterator::PropertyOrElement(..., Handle<Object> key, ...) takes
any Object and does the required ToPrimitive/ToName/ToArrayIndex
conversions on it.
Review URL: https://codereview.chromium.org/1375943002
Cr-Commit-Position: refs/heads/master@{#31023}
This prevents the internal incremental-marking.h to be usable outisde
of the "heap" directory. The logic inside that component is only useful
within the GC and is now properly encapsulated.
R=hpayer@chromium.org
Review URL: https://codereview.chromium.org/1374203002
Cr-Commit-Position: refs/heads/master@{#31010}
This adds ES6 compliant Object::ToInteger, Object::ToInt32,
Object::ToUint32 and Object::ToLength, and replaces the old
Execution wrappers of those abstract operations (which were
not using the correct ToPrimitive).
This also introduces proper %ToInteger and %ToLength runtime
entries, with a fast path %_ToInteger supported in fullcodegen
and Crankshaft (for now). Internal JavaScript code should use
TO_INTEGER and TO_LENGTH respectively.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_layout_dbg,v8_linux_nosnap_dbg
BUG=v8:4307
LOG=n
Review URL: https://codereview.chromium.org/1378533002
Cr-Commit-Position: refs/heads/master@{#30993}
Replacing it with SMI_ACCESSORS.
This change makes accesses to Smi fields in objects more regular (the
accessors now always consume/return an int rather than a Smi*), which
avoids a bunch of manual Smi::FromInt() and Smi::value() conversions,
and is a step on the way towards being able to generate objects-inl.h.
Review URL: https://codereview.chromium.org/1371893002
Cr-Commit-Position: refs/heads/master@{#30975}
Now both Execution::Call and Execution::New can deal with any
kind of target and will raise a proper exception if the target is not
callable (which is not yet spec compliant for New, as we would
have to check IsConstructor instead, which we don't have yet).
Now we no longer need to do any of these weird call/construct
delegate gymnastics in C++, and we finally have a single true
bottleneck for Call/Construct abstract operations in the code
base, with only a few special handlings left in the compilers to
optimize the JSFunction case.
R=jarin@chromium.org
BUG=v8:4430, v8:4413
LOG=n
Review URL: https://codereview.chromium.org/1360793002
Cr-Commit-Position: refs/heads/master@{#30874}
Currently Execution::Call (and friends) still duplicate a lot of the
Call sequence logic that should be encapsulated in the Call and
CallFunction builtins. So the plan now is to switch Execution::Call
to accept any Callable and just pass that through to the Call builtin.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_dbg
R=jarin@chromium.org
BUG=v8:4413
LOG=n
Committed: https://crrev.com/359645f48156e15f235e9a9ede7910e0bcd9ae45
Cr-Commit-Position: refs/heads/master@{#30791}
Review URL: https://codereview.chromium.org/1353723002
Cr-Commit-Position: refs/heads/master@{#30808}
Currently Execution::Call (and friends) still duplicate a lot of the
Call sequence logic that should be encapsulated in the Call and
CallFunction builtins. So the plan now is to switch Execution::Call
to accept any Callable and just pass that through to the Call builtin.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_dbg
R=jarin@chromium.org
BUG=v8:4413
LOG=n
Review URL: https://codereview.chromium.org/1353723002
Cr-Commit-Position: refs/heads/master@{#30791}
Move the implementation of the Abstract Equality Comparison to the
runtime and thereby remove the EQUALS dispatcher builtin. Also remove
the various runtime entry points that were only used to support the
EQUALS builtin.
Now the Abstract Equality Comparison is also using the correct
ToPrimitive implementation, which properly supports @@toPrimitive.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_layout_dbg,v8_linux_nosnap_dbg
R=mstarzinger@chromium.org
BUG=v8:4307
LOG=n
Review URL: https://codereview.chromium.org/1337993005
Cr-Commit-Position: refs/heads/master@{#30747}
Replace the ADD, SUB, etc. builtins with proper runtime implementations,
and expose them as runtime calls that can be used by the code stubs and
the interpreter (for now).
Also remove all the support runtime functions for ADD, SUB and friends,
namely %NumberAdd, %NumberSub, and so on.
R=mstarzinger@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_layout_dbg,v8_linux_nosnap_dbg
Review URL: https://codereview.chromium.org/1333843002
Cr-Commit-Position: refs/heads/master@{#30680}
This turns the has_instance_call_handler bit on Map into an is_callable
bit, that matches the spec definition of IsCallable (i.e. instances have
[[Call]] internal methods).
Also fix the typeof operator to properly say "function" for everything
that is callable.
Also remove the (unused) premature %_GetPrototype optimization from
Crankshaft, which just complicated the Map bit swap.
R=mstarzinger@chromium.org, rossberg@chromium.org, yangguo@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_layout_dbg
Review URL: https://codereview.chromium.org/1316933002
Cr-Commit-Position: refs/heads/master@{#30552}
Note that this is only pulling out the bookkeeping side of things, the
marking visitor that actually records the statistics should also move
into the ObjectStats class. That will be done as a follow-up.
R=mlippautz@chromium.org
Review URL: https://codereview.chromium.org/1326793002
Cr-Commit-Position: refs/heads/master@{#30547}
This CL us a pure refactoring that makes an empty compilation unit
including just "isolate.h" or "contexts.h" but not "objects-inl.h"
compile without warnings or errors. This is needed to further reduce
the header dependency tangle.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1322883002
Cr-Commit-Position: refs/heads/master@{#30500}
Reason for revert:
Breaks http://build.chromium.org/p/client.v8/builders/V8%20Arm%20-%20debug%20-%202/builds/2372
Original issue's description:
> [heap] GC flag cleanup/restructuring.
>
> * GC's flags are now proper flags and not int.
> * Callback flags are not threaded through but only set once like gc flags
> * Callers of methods that trigger GCs need to pass a reason when not using
> the default parameters.
>
> Furthermore, each GC invocation can be passed the GC and GCCallback flags. We
> usually override the currently set flags upon finishing a GC cylce, but are able
> to restore the previously set if desired. This is useful for explicitely
> triggered scavenges or external requests that interrupt the current behaviour.
>
> BUG=
>
> Committed: https://crrev.com/f4f3b431b9ce0778d926acf03c0d36dae5c0cba4
> Cr-Commit-Position: refs/heads/master@{#30457}
TBR=hpayer@chromium.org,yangguo@chromium.org,mlippautz@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review URL: https://codereview.chromium.org/1303393004
Cr-Commit-Position: refs/heads/master@{#30463}
* GC's flags are now proper flags and not int.
* Callback flags are not threaded through but only set once like gc flags
* Callers of methods that trigger GCs need to pass a reason when not using
the default parameters.
Furthermore, each GC invocation can be passed the GC and GCCallback flags. We
usually override the currently set flags upon finishing a GC cylce, but are able
to restore the previously set if desired. This is useful for explicitely
triggered scavenges or external requests that interrupt the current behaviour.
BUG=
Review URL: https://codereview.chromium.org/1314863003
Cr-Commit-Position: refs/heads/master@{#30457}
This is the first step towards a spec compliant ToPrimitive
implementation (and therefore spec compliant ToNumber, ToString,
ToName, and friends). It adds support for the @@toPrimitive
symbol that was introduced with ES2015, and also adds the new
Symbol.prototype[@@toPrimitive] and Date.prototype[@@toPrimitive]
initial properties.
There are now runtime functions for %ToPrimitive, %ToNumber and
%ToString, which do the right thing and should be used as fallbacks
instead of the hairy runtime.js implementations. I will do the
same for the other conversion operations mentioned by the spec in
follow up CLs. Once everything is in place we can look into
optimizing things further, so that we don't always call into the
runtime.
Also fixed Date.prototype.toJSON to be spec compliant.
R=mstarzinger@chromium.org, yangguo@chromium.org
BUG=v8:4307
LOG=y
Review URL: https://codereview.chromium.org/1306303003
Cr-Commit-Position: refs/heads/master@{#30434}
* Add types to properly report what has been executed in the GC
* Unify GCPrologueCallback and GCEpilogueCallback into GCCallback
* Report processing of second round weak handels, either synchronously or asynchronously
BUG=chromium:521946
LOG=N
Review URL: https://codereview.chromium.org/1298113003
Cr-Commit-Position: refs/heads/master@{#30218}
Add Object::StrictEquals to unify the implementation of strict equality
comparison in the runtime and the api (the api was already missing a
case for SIMD). Now we (almost) have a single bottleneck for strict
equality, we just need to reduce the amount of unnecessary complexity
for the code stub.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1298603002
Cr-Commit-Position: refs/heads/master@{#30186}
- Make the API look like v8::V8::InitializeICU.
(That is: A static method call, not an object to be created on the stack.)
- Fix path separator on Windows, by calling base::OS::isPathSeparator.
- Move into API, so that it can be called by hello-world & friends.
- Actually call it from hello-world and friends.
R=jochen@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1292053002
Cr-Commit-Position: refs/heads/master@{#30174}
Improves on aec8987b5e by not forcing external GCs
(blink) through the GC epilogue callback.
BUG=chromium:515795
LOG=N
Review URL: https://codereview.chromium.org/1287323002
Cr-Commit-Position: refs/heads/master@{#30164}
This tries to remove includes of "-inl.h" headers from normal ".h"
headers, thereby reducing the chance of any cyclic dependencies and
decreasing the average size of our compilation units.
Note that this change still leaves 7 violations of that rule in the
code. However there now is the "tools/check-inline-includes.sh" tool
detecting such violations.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1283033003
Cr-Commit-Position: refs/heads/master@{#30125}
This is the first step of turning the v8.h file into a normal header
instead of an include-the-world header. The new rule is that no other
header files are allowed to include v8.h, which is enforced by DEPS.
Also the number of includes inside the v8.h file has been drastically
reduced. Basically the last missing piece is the inclusion of the big
objects-inl.h file.
This in turn makes many headers follow the IWYU principle.
R=bmeurer@chromium.org,hpayer@chromium.org,titzer@chromium.org
Review URL: https://codereview.chromium.org/1282503003
Cr-Commit-Position: refs/heads/master@{#30102}
This is a first step towards constraining down the heap interface to
just the heap.h file. Note that many includes still leak through that
file to the global "src" directory, but there now is a single place
controlling which declarations leak that way. Especially inclusion of
inline header files within "heap" has been limited drastically.
R=hpayer@chromium.org,mlippautz@chromium.org
Review URL: https://codereview.chromium.org/1281233003
Cr-Commit-Position: refs/heads/master@{#30092}
We missed a check whether we can actually do incremental marking when starting
it on reaching the external allocation limit.
BUG=chromium:517195
LOG=N
Review URL: https://codereview.chromium.org/1274983002
Cr-Commit-Position: refs/heads/master@{#30043}
This is only an estimate since it counts objects that could be shared,
for example strings, cow arrays, heap numbers, etc.
It however ignores objects that could be shared, but may only be used
by the context to be measured, for example shared function infos,
script objects, scope infos, etc.
R=jochen@chromium.org
Review URL: https://codereview.chromium.org/1268333004
Cr-Commit-Position: refs/heads/master@{#30029}
With the recent changes to the incremental marking API we can now kick off
incremental marking while respecting callback flags.
Performance neutral for smoothness.image_decoding_cases on N9 (read: does not
crash) as long as we synchronously process phantom callbacks
(kGCCallbackFlagForced).
OORT single run:
"marksweep": {
"count": 5,
"pause_min": 7.5,
"pause_max": 158.8,
"pause_avg": 97.52000000000001,
"pause_gt_10ms": 4
}
--- vs ---
"marksweep": {
"count": 5,
"pause_min": 16.2,
"pause_max": 22.1,
"pause_avg": 19.32,
"pause_gt_10ms": 5
}
The number of actual full GCs varies. The improvement manifests in reduced
maximum and average pauses.
BUG=chromium:515795
LOG=N
Review URL: https://codereview.chromium.org/1271253002
Cr-Commit-Position: refs/heads/master@{#30028}
The heuristic can cause weird behavior when bootstrapping.
The memory savings is not worth this hassle.
Review URL: https://codereview.chromium.org/1265983006
Cr-Commit-Position: refs/heads/master@{#30019}
The heuristic can cause weird behavior when bootstrapping.
The memory savings is not worth this hassle.
Review URL: https://codereview.chromium.org/1265983006
Cr-Commit-Position: refs/heads/master@{#29992}
This forces the second pass of the pending phantom callbacks to run immediately after the first.
BUG=chromium:511294
LOG=Y
Review URL: https://codereview.chromium.org/1252993004
Cr-Commit-Position: refs/heads/master@{#29933}
For now it uses a pretty slow path for accessing strings by wrapping it into a new temporary wrapper.
BUG=v8:4042, v8:3088
LOG=y
Review URL: https://codereview.chromium.org/1221303019
Cr-Commit-Position: refs/heads/master@{#29576}
Additionally speed up instantiation of ObjectTemplates by preallocating enough space in the descriptor arrays
BUG=v8:4184
LOG=n
Review URL: https://codereview.chromium.org/1218403002
Cr-Commit-Position: refs/heads/master@{#29468}
The only right way to enable access checks is to install access check callbacks on an object template via v8::ObjectTemplate::SetAccessCheckCallbacks(). It does not make sense to enable access checks on an arbitrary object.
Review URL: https://codereview.chromium.org/1217893012
Cr-Commit-Position: refs/heads/master@{#29439}
Map: get, set, has, delete, clear
Set: add, has, delete, clear
All except clear are implemented as calls into collection.js.
Note that some of these shadow methods of v8::Object. It's unclear
how confusing that's going to be: on the one hand, it seems likely
that most operations you would want to do on a Map or Set are these.
On the other, generic code could get confused if it somehow gets
ahold of a variable that happens to be C++-typed as a v8::Map or v8::Set.
BUG=v8:3340
LOG=y
Review URL: https://codereview.chromium.org/1204623002
Cr-Commit-Position: refs/heads/master@{#29237}
This fixes warning on android_arm build.
Previously the compiler complained about a check that can never be true.
See second check below(index is size_t type, FIRST_SPACE=0):
if (index > i::LAST_SPACE || index < i::FIRST_SPACE)
And make the code easy to understand.
BUG=
Review URL: https://codereview.chromium.org/1155043005
Cr-Commit-Position: refs/heads/master@{#29042}
Apparently the *RealNamed* API methods only have named variants, but were always used by the embedder to find elements as well. We'd never find them though, since we wouldn't even look
there.
This CL ensures we check whether the name is actually an array index.
I guess for all named API functions we should assume they are used similar to o["name"] where name could also be a number... At least we should make it uniform between embedder and V8. This matches us up with their expectations for now...
BUG=v8:4137
LOG=n
Review URL: https://codereview.chromium.org/1177383004
Cr-Commit-Position: refs/heads/master@{#29008}
Otherwise using Object.defineProperty with window.localStorage will not actually store the value into the database but on the object itself.
BUG=v8:4137
LOG=n
Review URL: https://codereview.chromium.org/1180073002
Cr-Commit-Position: refs/heads/master@{#29002}
Reason for revert:
Blocks revert of https://codereview.chromium.org/1175973002
Original issue's description:
> Replace SetObjectProperty / DefineObjectProperty with less powerful alternatives where relevant.
>
> @yangguo: please look at the debugger part of the CL.
> @ishell: please look at the rest.
>
> Additionally:
> - Ensure the LookupIterator for named properties does not accidentally get indexes in.
> - Fix the return value for typed array assignments to be the incoming value.
>
> BUG=v8:4137
> LOG=n
>
> Committed: https://crrev.com/15aa811f8fe2708a757c3b53ca89db736aa8b222
> Cr-Commit-Position: refs/heads/master@{#28954}
TBR=yangguo@chromium.org,verwaest@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4137
Review URL: https://codereview.chromium.org/1181733002
Cr-Commit-Position: refs/heads/master@{#28957}
@yangguo: please look at the debugger part of the CL.
@ishell: please look at the rest.
Additionally:
- Ensure the LookupIterator for named properties does not accidentally get indexes in.
- Fix the return value for typed array assignments to be the incoming value.
BUG=v8:4137
LOG=n
Review URL: https://codereview.chromium.org/1178503004
Cr-Commit-Position: refs/heads/master@{#28954}
This will significantly simplify the serialization code, as well
as speeding it up (by triggering only a single allocation instead of O(size)
allocations).
BUG=chromium:478263
LOG=y
Review URL: https://codereview.chromium.org/1157843006
Cr-Commit-Position: refs/heads/master@{#28793}
This also fixes issues with
- kMaxUint32 being a valid length but not index cornercases
- exotic integer objects masking "exotic indexes" even though its in the prototype chain
- concating of holey sloppy arguments
BUG=v8:4137
LOG=n
Review URL: https://codereview.chromium.org/1159433003
Cr-Commit-Position: refs/heads/master@{#28754}
When compiling on a laptop I like to concatenate the small test files.
This makes a big difference to compile times. These changes make that
easier.
R=ulan@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1163803002
Cr-Commit-Position: refs/heads/master@{#28742}
If we crash V8 due to out-of-memory then we print the last 3 GCs on
stdout as we crash. Also records the last 3 GCs on the stack so that
it will be part of the minidump.
R=hpayer@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1159513003
Cr-Commit-Position: refs/heads/master@{#28704}
These are similar to the Map/Set constructors when called with an array,
except that they are guaranteed to be side-effect free if called with
a packed array.
This will be useful in implementing structured clone which, as
specified in HTML, speaks in terms of the internal [[MapData]]
and [[SetData]] slots without going through the exposed iteration
ES semantics.
BUG=v8:3340
LOG=y
Review URL: https://codereview.chromium.org/1155893003
Cr-Commit-Position: refs/heads/master@{#28642}
These return arrays representing the current contents of the given
Map/Set. They are similar to what would be returned by the JS code:
Array.from(collection)
except that they are guaranteed side-effect free.
This will be useful in implementing structured clone which, as
specified in HTML, speaks in terms of the internal [[MapData]]
and [[SetData]] slots without going through the exposed iteration
ES semantics.
BUG=v8:3340
LOG=y
Review URL: https://codereview.chromium.org/1148383007
Cr-Commit-Position: refs/heads/master@{#28640}
Only supports constructing new objects and returning size.
Followup patch will need to add ability to retrieve and
set contents in order to support structured clone.
Also removes a bunch of outdated "experimental" markers from v8.h.
BUG=v8:3340
LOG=y
Review URL: https://codereview.chromium.org/1157453002
Cr-Commit-Position: refs/heads/master@{#28637}
* Hash code is now just done with a private own symbol instead of the hidden string, which predates symbols.
* In the long run we should do all hidden properties this way and get rid of the
hidden magic 0-length string with the zero hash code. The advantages include
less complexity and being able to do things from JS in a natural way.
* Initially, the performance of weak set regressed, because it's a little harder
to do the lookup in C++. Instead of heroics in C++ to make things faster I
moved some functionality into JS and got the performance back. JS is supposed to be good at looking up named properties on objects.
* This also changes hash codes of Smis so that they are always Smis.
Performance figures are in the comments to the code review. Summary: Most of js-perf-test/Collections is neutral. Set and Map with object keys are 40-50% better. WeakMap is -5% and WeakSet is +9%. After the measurements, I fixed global proxies, which cost 1% on most tests and 5% on the weak ones :-(.
In the code review comments is a patch with an example of the heroics we could do in C++ to make lookup faster (I hope we don't have to do this. Instead of checking for the property, then doing a new lookup to insert it, we could do one lookup and handle the addition immediately). With the current benchmarks above this buys us nothing, but if we go back to doing more lookups in C++ instead of in stubs and JS then it's a win.
In a similar vein we could give the magic zero hash code to the hash code
symbol. Then when we look up the hash code we would sometimes see the table
with all the hidden properties. This dual use of the field for either the hash
code or the table with all hidden properties and the hash code is rather ugly,
and this CL gets rid of it. I'd be loath to bring it back. On the benchmarks quoted above it's slightly slower than moving the hash code lookup to JS like in this CL.
One worry is that the benchmark results above are more monomorphic than real
world code, so may be overstating the performance benefits of moving to JS. I
think this is part of a general issue we have with handling polymorphic code in
JS and any solutions there will benefit this solution, which boils down to
regular property access. Any improvement there will lift all boats.
R=adamk@chromium.org, verwaest@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1149863005
Cr-Commit-Position: refs/heads/master@{#28622}
(Requires the embedder's ExternalSourceStream implementation to cooperate.
See crrev.com/1154883003 for Blink.)
R=jochen@chromium.org
BUG=chromium:470930
LOG=Y
Review URL: https://codereview.chromium.org/1156733002
Cr-Commit-Position: refs/heads/master@{#28610}
This adds a new external type (v8::SharedArrayBuffer) that uses a JSArrayBuffer
under the hood. It can be distinguished from an ArrayBuffer by the newly-added
is_shared() bit.
Currently there is no difference in functionality between a SharedArrayBuffer
and an ArrayBuffer. However, a future CL will add the Atomics API, which is
only available on an SharedArrayBuffer. All non-atomic accesses are identical
to ArrayBuffer accesses.
LOG=N
BUG=
Review URL: https://codereview.chromium.org/1136553006
Cr-Commit-Position: refs/heads/master@{#28594}
Deleting an in-bounds character index from a String object should always return
false.
BUG=
LOG=N
Review URL: https://codereview.chromium.org/1153673003
Cr-Commit-Position: refs/heads/master@{#28592}
Reason for revert:
breaks build
Original issue's description:
> Implement SharedArrayBuffer.
>
> This adds a new external type (v8::SharedArrayBuffer) that uses a JSArrayBuffer under the hood. It can be distinguished from an ArrayBuffer by the newly-added is_shared() bit.
>
> Currently there is no difference in functionality between a SharedArrayBuffer and an ArrayBuffer. However, a future CL will add the Atomics API, which is only available on an SharedArrayBuffer. All non-atomic accesses are identical to ArrayBuffer accesses.
>
> BUG=
>
> Committed: https://crrev.com/57170bff7baf341c666252a7f6a49e9c08d51263
> Cr-Commit-Position: refs/heads/master@{#28588}
TBR=jarin@chromium.org,jochen@chromium.org,binji@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review URL: https://codereview.chromium.org/1149203003
Cr-Commit-Position: refs/heads/master@{#28589}
This adds a new external type (v8::SharedArrayBuffer) that uses a JSArrayBuffer under the hood. It can be distinguished from an ArrayBuffer by the newly-added is_shared() bit.
Currently there is no difference in functionality between a SharedArrayBuffer and an ArrayBuffer. However, a future CL will add the Atomics API, which is only available on an SharedArrayBuffer. All non-atomic accesses are identical to ArrayBuffer accesses.
BUG=
Review URL: https://codereview.chromium.org/1136553006
Cr-Commit-Position: refs/heads/master@{#28588}
We want to use the conservative growth strategy during
- isolate initialization
- bootstrapping a context
But not when
- not creating a snapshot
- running additional code for custom snapshot.
R=mvstanton@chromium.org
Review URL: https://codereview.chromium.org/1155823003
Cr-Commit-Position: refs/heads/master@{#28586}
For dumping the number of objects and size of objects alive after the
last gc into chrome://tracing memory dumps, this CL adds new api to
get these number for each isolate.
Note: Chrome should be run with --js-flags='--track_gc_object_stats
--noincremental-marking' for object tracking.
BUG=476013
LOG=Y
Review URL: https://codereview.chromium.org/1113233002
Cr-Commit-Position: refs/heads/master@{#28474}
When the page is controlled by a ServiceWorker, the ServiceWorker can return an opaque (non-CORS cross origin) resource response.
We need to treat the messages from such script resource as opaque.
Committed: https://crrev.com/7a599c5e1242d3c5ab7515ee149623da90ae69ec
Cr-Commit-Position: refs/heads/master@{#28445}
Review URL: https://codereview.chromium.org/1140673002
Cr-Commit-Position: refs/heads/master@{#28459}
When the page is controlled by a ServiceWorker, the ServiceWorker can return an opaque (non-CORS cross origin) resource response.
We need to treat the messages from such script resource as opaque.
Review URL: https://codereview.chromium.org/1140673002
Cr-Commit-Position: refs/heads/master@{#28445}
We keep an eye on the recursion depth. Once it exceeds a limit, we serialize
only the object header and size, but defer serializing the object body for
after we have unwound the stack.
R=mvstanton@chromium.org
Review URL: https://codereview.chromium.org/1125073004
Cr-Commit-Position: refs/heads/master@{#28385}
Some of the DevTools' clients need to inspect JS objects without enabling debugger. This CL allows to inspect object's internal properties without enabling debugger and instantiating debug context.
Note that now debug context can be created lazily if v8::Debug::GetDebugContext is called when there is no debug listener. This is fragile and has already resulted in some subtle error. I'm going to fix that in a separate CL.
BUG=chromium:481845
LOG=Y
Review URL: https://codereview.chromium.org/1134193002
Cr-Commit-Position: refs/heads/master@{#28371}
Reason for revert:
GC mole issues: https://chromegw.corp.google.com/i/client.v8/builders/V8%20Linux%20-%20gcmole/builds/1950/steps/GCMole%20ia32/logs/stdio
Original issue's description:
> Provide accessor for object internal properties that doesn't require debugger to be active
>
> Some of the DevTools' clients need to inspect JS objects without enabling debugger. This CL allows to inspect object's internal properties without enabling debugger and instantiating debug context.
>
> Note that now debug context can be created lazily if v8::Debug::GetDebugContext is called when there is no debug listener. This is fragile and has already resulted in some subtle error. I'm going to fix that in a separate CL.
>
> BUG=chromium:481845
> LOG=Y
>
> Committed: https://crrev.com/bdeb0de88c8cf5f2c78f261b45314138f525110d
> Cr-Commit-Position: refs/heads/master@{#28362}
TBR=pfeldman@chromium.org,kozyatinskiy@chromium.org,yurys@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:481845
Review URL: https://codereview.chromium.org/1133243002
Cr-Commit-Position: refs/heads/master@{#28365}
Some of the DevTools' clients need to inspect JS objects without enabling debugger. This CL allows to inspect object's internal properties without enabling debugger and instantiating debug context.
Note that now debug context can be created lazily if v8::Debug::GetDebugContext is called when there is no debug listener. This is fragile and has already resulted in some subtle error. I'm going to fix that in a separate CL.
BUG=chromium:481845
LOG=Y
Review URL: https://codereview.chromium.org/1126103006
Cr-Commit-Position: refs/heads/master@{#28362}
If there had been no debug listener v8::Debug::GetDebugContext would have created new context and wouln't have kept reference to it. This way we may well end up with several debug contexts and disabled debugger.
As a side effect this change allows to efficiently distinguish debug context from blink contexts by simply comparing handles.
BUG=chromium:482290
LOG=Y
Review URL: https://codereview.chromium.org/1136733002
Cr-Commit-Position: refs/heads/master@{#28356}
Exposed to the extras as extrasExports (on the builtins object), on
which they can put things that should be accessible from C++. Exposed
to C++ through the V8 API as v8::Context::GetExtrasExportsObject().
Adding a test (in test-api.cc) required adding a simple extra,
test-extra.js, which we build into the standalone builds.
R=yangguo@chromium.org, jochen@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1128113006
Cr-Commit-Position: refs/heads/master@{#28317}
I know the bug has been closed but this seems like a simple addition that may
be useful in other ways as well.
BUG=v8:2180
LOG=N
Review URL: https://codereview.chromium.org/1128553002
Cr-Commit-Position: refs/heads/master@{#28261}
Just give internal ones an ArrayBuffer with a NULL backing store. This
simplifies the access checks a lot.
BUG=v8:3996
R=hpayer@chromium.org,verwaest@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1109353003
Cr-Commit-Position: refs/heads/master@{#28168}
Original issue's description:
> Remove the weak list of array buffers
>
> Instead, collect live array buffers during marking and free pointers we
> no longer found.
>
> BUG=v8:3996
> R=hpayer@chromium.org
> LOG=n
BUG=v8:3996
TBR=hpayer@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1115853004
Cr-Commit-Position: refs/heads/master@{#28156}
We shouldn't have shared state between isolates by default. The embedder
is free to pass the same allocator to all isolates it creates.
BUG=none
R=dcarney@chromium.org
LOG=y
Review URL: https://codereview.chromium.org/1116633002
Cr-Commit-Position: refs/heads/master@{#28127}
For dumping memory statistics about v8 heap, we need the total
available size of the heap. This CL adds extra field in HeapStatistics
to return the available size.
BUG=476013
LOG=Y
Review URL: https://codereview.chromium.org/1104123002
Cr-Commit-Position: refs/heads/master@{#28100}
This CL changes GetHeapSpaceStatistics api to return SizeOfObjects()
instead of Size(). SizeOfObjects is the required field and is
consistent with GetHeapStatistics api.
BUG=476013
LOG=N
Review URL: https://codereview.chromium.org/1095393005
Cr-Commit-Position: refs/heads/master@{#28080}
The embedder has to take appropriate steps to ensure that the
ArrayBuffer doesn't die while it's accessing the pointer, e.g. keep a
Local handle to it around
BUG=none
R=dslomov@chromium.org
LOG=y
Review URL: https://codereview.chromium.org/1095083002
Cr-Commit-Position: refs/heads/master@{#27942}
This is first step towards adding V8 heap statistics to the memory
tracing infrastructure. For being able to get useful memory number into
the memory dump, v8 needs to provide an external api needs to obtain
more information about the heap. So, this Cl extends the api to give
information about the memory allocated and used in the spaces.
BUG=466141, 476013
LOG=Y
Review URL: https://codereview.chromium.org/1058253003
Cr-Commit-Position: refs/heads/master@{#27919}
The embedder can control how many threads it wants to use via the
v8::Platform implementation. V8 internally doesn't spin up threads
anymore. If the embedder doesn't want to use any threads at all, it's
v8::Platform implementation must either run the background jobs on
the foreground thread, or the embedder should specify --predictable
BUG=none
R=yangguo@chromium.org
LOG=y
Review URL: https://codereview.chromium.org/1064723005
Cr-Commit-Position: refs/heads/master@{#27833}
This allows the embedder to decide whether it's worthwhile to copy the
contents to avoid materializing a buffer.
BUG=v8:3996
R=dslomov@chromium.org,kbr@chromium.org
LOG=y
Review URL: https://codereview.chromium.org/1084513002
Cr-Commit-Position: refs/heads/master@{#27782}
When debugging Handle leaks in io.js we found it very convenient to be
able to Seal some specific (root in our case) scope to prevent Handle
allocations in it, and easily find leakage.
R=yangguo
BUG=
Review URL: https://codereview.chromium.org/1079713002
Cr-Commit-Position: refs/heads/master@{#27766}
Reason for revert:
Causes test failures on ARM bots related to cells and write barriers.
Original issue's description:
> Merge cellspace into old pointer space
>
> BUG=
>
> Committed: https://crrev.com/4e7163ce05f135918205c7855ae60a48e5d46cc5
> Cr-Commit-Position: refs/heads/master@{#27707}
TBR=hpayer@chromium.org,balazs.kilvady@imgtec.com,yangguo@chromium.org,verwaest@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review URL: https://codereview.chromium.org/1053243003
Cr-Commit-Position: refs/heads/master@{#27711}
