Commit Graph

24 Commits

Author SHA1 Message Date
Ryan Macnak a6ffc74a4a [vm] Switch most Instances whose layout is determined in C++ to compressed pointers.
Instances whose layout must agree with a layout determined by Dart code are not switched: Array, GrowableObjectArray, Closure, LinkedHashMap.

TEST=ci
Change-Id: I19baf6473a29dd14f84aa1e087eee16b0e6e9d77
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/193442
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Liam Appelbe <liama@google.com>
2021-04-05 17:43:16 +00:00
Ryan Macnak b1c09ecd8f [vm] Make naming more consistent when converting between handles, tagged and untagged pointers.
Currently we have things called XPtr which are not what you get from ptr().

Old world:
handle->raw() returns RawObject* (tagged)
raw_obj->ptr() returns RawObject* (untagged)

After 6fe15f6df9:
handle->raw() returns ObjectPtr
obj_ptr->ptr() returns ObjectLayout*

New world:
handle->ptr() returns ObjectPtr
obj_ptr->untag() returns UntaggedObject*

TEST=ci
Change-Id: I6c7f34014cf20737607caaf84979838300d12df2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149367
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
2021-01-15 23:32:02 +00:00
Martin Kustermann 0f76981bb1 [vm/concurrency] Change references to class_table/object_store/heap from Isolate to IsolateGroup
As part of making the compiler and other subsystems independent
of `Isolate` we have to move various state from `Isolate` to
`IsolateGroup`.

The class_table and object_store were already moved to `IsolateGroup`.

This CL only replaces usages of `Isolate::{object_store,class_table}`
with the equivalent in `IsolateGroup`.

Issue https://github.com/dart-lang/sdk/issues/36097

TEST=Pure refactoring - relying on existing test coverage.

Change-Id: I34a0682d715b054d6c5faff077a513980f59a348
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/177126
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
2021-01-06 15:22:11 +00:00
Alexander Markov 5c19b4abcd [vm] Handle errors from RegExp engine
Bug: b/72146178
Change-Id: I2d05a004690b4d3e0b3e79786a967e27fddaacb5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/166582
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
2020-10-07 22:34:24 +00:00
Ryan Macnak 6fe15f6df9 [vm] Represent tagged pointers as C++ value types instead of C++ pointer types.
This works around bugs in UndefinedBehaviorSanitizer and Clang.

Bug: b/28638298
Change-Id: I6be595f9664516019d28017d24559583a1ae3a21
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144354
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
2020-04-25 05:21:27 +00:00
Vyacheslav Egorov a41a1dc917 [vm/compiler] Split compiler sources out of normal VM sources.
Make them form its own source set (libdart_compiler) and completely exclude
them from AOT runtime targets.

Previously we had some inconsistencies, with some files were using
DART_PRECOMPILED_RUNTIME to fully or partially exclude either contents
from their headers or from implementation, while other files did nothing
and relied on linker to throw their contents away.

This change tries to address this inconsistency.

A follow up change would include a check in most compiler headers which
would prohibit to use them while building AOT runtime.

Change-Id: Ief11b11cbc518b301d3e93fce80580a31bbad151
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/142993
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2020-04-16 22:59:03 +00:00
yuanhuihui fe9f30c389 [timeline] support vm events available to systrace
more detail: https://github.com/dart-lang/sdk/issues/39757

Signed-off-by: yuanhuihui <gityuan@gmail.com>
Bug: https://github.com/dart-lang/sdk/issues/39757
Change-Id: I6174500796289ffcfb7a53d3f897c5d7f82932ae
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128200
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2019-12-13 00:41:46 +00:00
Ryan Macnak 347b72c260 [vm] Bypass malloc for large Zone allocations to avoid jemalloc leaks.
Revert 9a07ad88f4.

Bug: https://github.com/flutter/flutter/issues/29007
Change-Id: I6a5f51f0c3a54d354ec5f8495677d46f94d8a1d3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/100568
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
2019-04-30 16:17:18 +00:00
Stevie Strickland 4028fec3b5 Reland "[vm] Finish adding support for ECMAScript 2018 features."
This work pulls in v8 support for these features with
appropriate changes for Dart and closes
https://github.com/dart-lang/sdk/issues/34935.

This adds support for the following features:

* Interpreting patterns as Unicode patterns instead of
  BMP patterns
* the dotAll flag (`/s`) for changing the behavior
  of '.' to also match line terminators
* Escapes for character classes described by Unicode
  property groups (e.g., \p{Greek} to match all Greek
  characters, or \P{Greek} for all non-Greek characters).

The following TC39 proposals describe some of the added features:

* https://github.com/tc39/proposal-regexp-dotall-flag
* https://github.com/tc39/proposal-regexp-unicode-property-escapes

These additional changes are included:

* Extends named capture group names to include the full
  range of identifier characters supported by ECMAScript,
  not just ASCII.
* Changing the RegExp interface to return RegExpMatch
  objects, not Match objects, so that downcasting is
  not necessary to use named capture groups from Dart

**Note**: The changes to the RegExp interface are a
breaking change for implementers of the RegExp interface.
Current users of the RegExp interface (i.e., code using Dart
RegExp objects) will not be affected.

Change-Id: Ie62e6082a0e2fedc1680ef2576ce0c6db80fc19a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/100641
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Stevie Strickland <sstrickl@google.com>
2019-04-29 09:11:48 +00:00
Ryan Macnak 9a07ad88f4 [vm, irregexp] Cache the backtracking stack on the isolate to avoid memory leaks in jemalloc.
Bug: https://github.com/flutter/flutter/issues/29007
Change-Id: Ic08e6cdad087cb063350b0738a65f426e67864d0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/100500
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
2019-04-25 20:08:52 +00:00
Keerti Parthasarathy 9238e25305 Revert "[vm] Finish adding support for ECMAScript 2018 features."
This reverts commit 5ebb640a67.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> [vm] Finish adding support for ECMAScript 2018 features.
> 
> This work pulls in v8 support for these features with
> appropriate changes for Dart and closes
> https://github.com/dart-lang/sdk/issues/34935.
> 
> This adds support for the following features:
> 
> * Interpreting patterns as Unicode patterns instead of
>   BMP patterns
> * the dotAll flag (`/s`) for changing the behavior
>   of '.' to also match line terminators
> * Escapes for character classes described by Unicode
>   property groups (e.g., \p{Greek} to match all Greek
>   characters, or \P{Greek} for all non-Greek characters).
> 
> The following TC39 proposals describe some of the added features:
> 
> * https://github.com/tc39/proposal-regexp-dotall-flag
> * https://github.com/tc39/proposal-regexp-unicode-property-escapes
> 
> These additional changes are included:
> 
> * Extends named capture group names to include the full
>   range of identifier characters supported by ECMAScript,
>   not just ASCII.
> * Changing the RegExp interface to return RegExpMatch
>   objects, not Match objects, so that downcasting is
>   not necessary to use named capture groups from Dart
> 
> **Note**: The changes to the RegExp interface are a
> breaking change for implementers of the RegExp interface.
> Current users of the RegExp interface (i.e., code using Dart
> RegExp objects) will not be affected.
> 
> Change-Id: I0709ed0a8d5db36680e32bbad585594857b9ace4
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/95651
> Commit-Queue: Stevie Strickland <sstrickl@google.com>
> Reviewed-by: Johnni Winther <johnniwinther@google.com>
> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
> Reviewed-by: Martin Kustermann <kustermann@google.com>

TBR=lrn@google.com,kustermann@google.com,jmesserly@google.com,johnniwinther@google.com,sstrickl@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: I1eda0fee4fd9e94df095944049833a67b07277e2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/100560
Reviewed-by: Keerti Parthasarathy <keertip@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Keerti Parthasarathy <keertip@google.com>
2019-04-25 14:29:51 +00:00
Stevie Strickland 5ebb640a67 [vm] Finish adding support for ECMAScript 2018 features.
This work pulls in v8 support for these features with
appropriate changes for Dart and closes
https://github.com/dart-lang/sdk/issues/34935.

This adds support for the following features:

* Interpreting patterns as Unicode patterns instead of
  BMP patterns
* the dotAll flag (`/s`) for changing the behavior
  of '.' to also match line terminators
* Escapes for character classes described by Unicode
  property groups (e.g., \p{Greek} to match all Greek
  characters, or \P{Greek} for all non-Greek characters).

The following TC39 proposals describe some of the added features:

* https://github.com/tc39/proposal-regexp-dotall-flag
* https://github.com/tc39/proposal-regexp-unicode-property-escapes

These additional changes are included:

* Extends named capture group names to include the full
  range of identifier characters supported by ECMAScript,
  not just ASCII.
* Changing the RegExp interface to return RegExpMatch
  objects, not Match objects, so that downcasting is
  not necessary to use named capture groups from Dart

**Note**: The changes to the RegExp interface are a
breaking change for implementers of the RegExp interface.
Current users of the RegExp interface (i.e., code using Dart
RegExp objects) will not be affected.

Change-Id: I0709ed0a8d5db36680e32bbad585594857b9ace4
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/95651
Commit-Queue: Stevie Strickland <sstrickl@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2019-04-24 09:24:16 +00:00
Stevie Strickland af5fc2d4d2 [VM] Partial support for named regexp captures.
See https://github.com/tc39/proposal-regexp-named-groups
for a high-level description of the feature and examples.  This is one of the
features requested in https://github.com/dart-lang/sdk/issues/34935.

This is a partial implementation because while there is a way to retrieve
groups via Dart by name, it requires casting the returned Match to the
new RegExpMatch interface to avoid changing the RegExp interface.
Changing the RegExp interface will happen in a future update, since there
are other planned changes to the RegExp interface coming soon and that way
we only change it once. See https://github.com/dart-lang/sdk/issues/36171
for more details on the planned changes.

Also, since only BMP regular expressions are supported, not full
Unicode ones (i.e., those with the /u flag in ECMAscript), \k<NAME>
will only be parsed as a named back reference if there are named
captures in the string. Otherwise, the \k will be parsed as the identity
escape for backwards compatibility. The new tests illustrate this
difference.

Change-Id: Ieeb0374813db78924c9aa8ac3e652dfb6d4a5934
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/95461
Commit-Queue: Stevie Strickland <sstrickl@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Jenny Messerly <jmesserly@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
2019-03-19 10:40:15 +00:00
Stevie Strickland f31b7928ae [VM] Adding regexp lookbehind assertion support.
See https://github.com/tc39/proposal-regexp-lookbehind
for a high-level description of the feature and examples.  This is one of the
features requested in https://github.com/dart-lang/sdk/issues/34935.

This work takes the feature as present in the v8 engine and appropriately
merges it into our irregexp fork. Notable changes to the irregexp codebase to
introduce this feature:

-----

We can no longer assume that all matching proceeds forwards, since lookbehind
matching proceeds backwards. Similarly, we cannot assume that we can only be
at the start of a string if we started matching from that point. The direction
of matching must also be taken into consideration when doing bounds checking,
which previously assumed the engine would never attempt to look before the
start of a string.

-----

We may now parse backreferences to captures before the capture they
reference, since we parse regular expressions left to right, but lookbehinds
perform captures as they evaluate the string from right to left.  Since
RegExpBackReference objects contain a pointer to their corresponding capture,
this means that we may need to create RegExpCapture objects prior to the
parsing of the corresponding captured subexpression.

Thus, RegExpCapture objects are now only initialized with their index, and the
body is set later when the subexpression is encountered and parsed. This means
any method that operates on the body of a RegExpCapture can no longer be const,
which also affects the rest of the RegExpTree class hierarchy. This also means
that we don't have a valid max_match length for backreferences based off the
capture body, and must assume they can end up being any length.

-----


Change-Id: Iffe0e71b17b1a0c6fea77235e8aee5c093005811
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/94540
Commit-Queue: Stevie Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2019-03-14 14:26:47 +00:00
Ryan Macnak 06a1e6e9e3 [vm] Enable timeline on Fuchsia even in product mode.
On Fuchsia, the timeline is accessed without involving the service isolate or vm-service.

Change-Id: Ia0d4e1ca252604e8fcef466a31e3d2a8b0912251
Reviewed-on: https://dart-review.googlesource.com/c/90100
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2019-01-18 00:06:10 +00:00
Ryan Macnak 07f95e7761 Revert "[vm] Enable timeline on Fuchsia even in product mode."
This reverts commit 3f7b371f2c.

Reason for revert: Some modes failing to find new constant?

Original change's description:
> [vm] Enable timeline on Fuchsia even in product mode.
> 
> On Fuchsia, the timeline is accessed without involving the service isolate or vm-service.
> 
> Change-Id: I0d2351dcadcfc47835732235e1b8fafa8212f883
> Reviewed-on: https://dart-review.googlesource.com/c/89880
> Reviewed-by: Zach Anderson <zra@google.com>
> Commit-Queue: Ryan Macnak <rmacnak@google.com>

TBR=rmacnak@google.com,alexmarkov@google.com,zra@google.com,asiva@google.com

Change-Id: Ic03a78d14821e0361d54587f1f7510bc9ebfef1c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/89942
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2019-01-17 00:39:39 +00:00
Ryan Macnak 3f7b371f2c [vm] Enable timeline on Fuchsia even in product mode.
On Fuchsia, the timeline is accessed without involving the service isolate or vm-service.

Change-Id: I0d2351dcadcfc47835732235e1b8fafa8212f883
Reviewed-on: https://dart-review.googlesource.com/c/89880
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2019-01-16 22:55:51 +00:00
Ryan Macnak 07f43510a2 [vm] Fix some cases of dropped errors and confusion between Exceptions::PropagateError and LongJumpScope::Jump.
Assert against Exceptions::PropagateError skipping over LongJumpScopes and LongJumpScope::Jump skipping over exit frames.

Bug: https://github.com/dart-lang/sdk/issues/35224
Change-Id: I67004a73265882191cb1945cb5a049559b747e89
Reviewed-on: https://dart-review.googlesource.com/c/85411
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2018-12-05 18:57:02 +00:00
Zachary Anderson 6cd8a79078 VM: Re-format to use at most one newline between functions
R=asiva@google.com

Review-Url: https://codereview.chromium.org/2974233002 .
2017-07-13 08:08:37 -07:00
Vyacheslav Egorov 2403444eba VM: Optimize RegExp.matchAsPrefix(...) by generating a sticky RegExp specialization.
This is the same as a sticky RegExp flag in ES2015.

Overlay some RegExp fields on top of each other - given that they should never be used simultaneously.

BUG=http://dartbug.com/27810
R=rmacnak@google.com

Review URL: https://codereview.chromium.org/2510783002 .
2016-11-17 17:46:21 +01:00
Zachary Anderson a1bcf051d8 clang-format runtime/vm
R=johnmccutchan@google.com

Review URL: https://codereview.chromium.org/2481873005 .
2016-11-08 13:54:47 -08:00
Ryan Macnak 1d2954ee28 Timeline event for compiling irregexp bytecode.
R=johnmccutchan@google.com

Review URL: https://codereview.chromium.org/1969453002 .
2016-05-11 10:35:58 -07:00
Ryan Macnak b070d98f6e Simpler regex names:
C++ JSRegExp -> RegExp
  Dart _JSSyntaxRegExp -> _RegExp
  Function RegExp.:irregexp: pattern -> RegExp.:matcher: pattern

R=johnmccutchan@google.com

Review URL: https://codereview.chromium.org/1815333002 .
2016-03-21 17:21:05 -07:00
Ryan Macnak d1475c0356 Port irregexp bytecode compiler and interpreter from V8 r24065.
R=srdjan@google.com

Review URL: https://codereview.chromium.org//1201383002 .
2015-07-07 14:43:32 -07:00