Original CL: https://codereview.chromium.org/2692803006/
Original commit message:
Tracking the awaiter return call stack:
- [x] Each async function closure now knows who is awaiting on their
return. This is effectively the asynchronous equivalent of the 'frame pointer'.
- [x] Each async* function closure now knows how is listening on their
stream. This is effectively the asynchronous equivalent of the 'frame pointer'.
Detecting uncaught exceptions in async functions:
- [x] Code object keeps a map from :await_jump_var to token position
- [x] Exception Handlers keep track if they are generated (as part of compilation) or directly from user code
- [x] Debugger maps :await_jump_var to a specific try index
R=johnmccutchan@google.com
Review-Url: https://codereview.chromium.org/2725623003 .
Tracking the awaiter return call stack:
- [x] Each async function closure now knows who is awaiting on their
return. This is effectively the asynchronous equivalent of the 'frame pointer'.
- [x] Each async* function closure now knows how is listening on their
stream. This is effectively the asynchronous equivalent of the 'frame pointer'.
Detecting uncaught exceptions in async functions:
- [x] Code object keeps a map from :await_jump_var to token position
- [x] Exception Handlers keep track if they are generated (as part of compilation) or directly from user code
- [x] Debugger maps :await_jump_var to a specific try index
Fixes#27242R=rmacnak@google.com
Review-Url: https://codereview.chromium.org/2692803006 .
Simplify handling of closures as deferred objects.
The name "type_arguments_" is confusing, because class Closure is not generic.
Class Closure was forcefully made (kinda) generic by setting its
type_arguments_field_offset_in_words_ field to a valid value, so that the
type_arguments_ field in closure instances could be accessed similarly as in
generic instances. With generic functions, closures will potentially have more
than one instantiator and the name type_arguments_ becomes nonsensical.
R=johnmccutchan@google.com
Review-Url: https://codereview.chromium.org/2719603002 .
use of Bigint (see issue #28595).
A RangeError with the message "Integer operand requires conversion to Bigint" is
thrown when a Bigint gets allocated. However, parsing a Bigint literal in Dart
source will not throw the RangeError (as long as the literal is not used).
R=asiva@google.com
Review-Url: https://codereview.chromium.org/2708213004 .
The function _fatal is only used in dart:async. Change it from a public
function of dart:_internal, which can be invoked via mirrors, into a
private function of dart:async.
R=rmacnak@google.com
Review-Url: https://codereview.chromium.org/2684963004 .
When we were implementing bootstraping from Kernel in https://github.com/dart-lang/sdk/commit/23fd1a184b393825f29444243780f3593ce0b3c1 we switched ClassID.cid* fields to become 'static final' lazily initialized fields instead of constants as they were before. This was mainly done to allow dartk compile patched_sdk - because these fields were previously injected in runtime and never existed in the text form.
However this regressed code quality for app-jit and app-aot snapshots because 'static final' fields are reset by snapshotting so resulting code contains InitStaticField and LoadStaticField instructions.
BUG=
R=kustermann@google.com
Review-Url: https://codereview.chromium.org/2693863006 .
This CL improves the stack traces that accompany exceptions. Whenever an
async function is entered, we remember how we got there. This is similar
in spirit to package:stack_trace but the implementation is more efficient
and memory usage can be more easily reasoned about.
Tracking causal stack traces:
- [x] Upon entry to an async function, capture the synchronous stack trace prefix and store it into the closure.
- [x] Upon entry to an async* function, capture the synchronous stack trace prefix and store it into the closure.
- [x] Before returning from an async function, clear the Thread's asynchronous stack trace.
- [x] After resuming an async function, load the sychronous stack trace prefix into the Thread.
- [x] Filter stack traces to remove async machinery.
Service protocol changes:
- [x] Send causal async stack trace.
Observatory changes:
- [x] Display causal async stack trace below async functions.
Fixes https://github.com/dart-lang/sdk/issues/27661R=asiva@google.com, rmacnak@google.com
Comparisons: https://docs.google.com/a/google.com/document/d/10r6jEqr8OCiDZ4y9SYU_uOimcHiOGAZMly2ghTErALI/edit?usp=sharing
Review-Url: https://codereview.chromium.org/2646443005 .
_fatal was a private function in dart:core which was called from a
different library (dart:async). It's not clear how it was supposed to
work or if it even did. The uses in dart:async don't appear to be
covered by tests.
Move it to dart:_internal which exists exactly for sharing things
between the dart: libraries.
BUG=
R=kustermann@google.com
Review-Url: https://codereview.chromium.org/2684033006 .
The implementation of patching in analyzer checks that signatures are identical.
This is stricter than it needs to be, but the required fixes in dart:core are
pretty simple.
BUG=
R=hausner@google.com
Review-Url: https://codereview.chromium.org/2655223005 .
The CL adds metadata support for Fields/Classes/Functions/Constructors. There
are other places where annotations can be put in the Dart language but the
Kernel IR currently does not store it in the AST.
Whenever a element (e.g. a function) gets annotated, the VM will make a [Field] for this
element whos value is an array of evaluated constant metadata annotations.
This CL attaches to these [Fields] a `kernel_function` which is then used to do the constant
evaluation.
R=vegorov@google.com
Review-Url: https://codereview.chromium.org/2632253002 .
- Don't mark core_isolate_snapshot_buffer as a const pointer.
- Update app snapshots without code to not rewrite the VM isolate snapshot, as already done by app snapshots with code.
Fixes#28368R=asiva@google.com
Review-Url: https://codereview.chromium.org/2637193002 .
This was a pull request: 8a8033a417
MirrorsUsed doesn't transitively include reflective information. However, it must still be able to create TypeMirrors for types that are used as return- or parameter types.
Initially, the patch checked that TypeMirrors had the correct number of arguments for generic types. This is now disabled.
A better approach would be to know if a class has full reflective information, or not. But this would require much bigger changes to the system.
R=sigmund@google.com
Review-Url: https://codereview.chromium.org/2615943004 .
* Basic implementation of reflecting generic types using dynamic list of type arguments
* Removed redundant expectation in test
* Added basic support for dynamic type arguments in reflectType of js_mirrors
* Fixes according to code review comments: major cleanup, added more test cases and updated docs
* Updated JS mirrors reflectType() to match behavior of VM implementation
* Terminate exception messages with a dot; Improved error handling for empty argument list and type checks;
* Use NumTypeParameters when checking provided argument list size
* Check if type arguments are malbounded; added test cases for typedefs and mixins
* Uncommented a test case
* Updated lib.status to mark some tests as failing in dart2js due to limitations in JS mirrors
* Fixed mixin test mock definition; updated configuration for tests requiring checked mode
* Handle nested generic types in type argument parsing (JS)
The analyzer has a stricter patch parser than the VM. Patch files
cannot change signatures of patched members. Specifically, they cannot
change:
- the return type
- a parameter's name
- a parameter to an initializing formal
- an optional parameter's default value
BUG=
R=asiva@google.com
Review-Url: https://codereview.chromium.org/2612043002 .
Before, the VM's dart:typed_data was a complete replacement of the SDK's
dart:typed_data implementation instead of a patch. This is unlike all
the other SDK libraries. This difference requires special-casing for
dart:typed_data in tools that handle the SDK libraries (e.g., the
Analyzer's patching support, the GN build).
This change makes dart:typed_data back into a patch to the SDK's
implementation. It reintroduces a distinction between abstract
interface and concrete implementation classes, so there are more
classes.
BUG=
R=fschneider@google.com, vegorov@google.com
Committed: https://github.com/dart-lang/sdk/commit/a9b906d319c32525a0600c75c008c92753591d86
Review-Url: https://codereview.chromium.org/2571563005 .
Before, the VM's dart:typed_data was a complete replacement of the SDK's
dart:typed_data implementation instead of a patch. This is unlike all
the other SDK libraries. This difference requires special-casing for
dart:typed_data in tools that handle the SDK libraries (e.g., the
Analyzer's patching support, the GN build).
This change makes dart:typed_data back into a patch to the SDK's
implementation. It reintroduces a distinction between abstract
interface and concrete implementation classes, so there are more
classes.
BUG=
R=fschneider@google.com
Review-Url: https://codereview.chromium.org/2571563005 .
Modify the following VM dart: library patches: collection, convert,
developer, _internal, isolate, math, mirrors, profiler, vmservice_io,
_vmservice, _builtin, nativewrappers, and io.
The modifications are mostly because:
- Patches should not be able to introduce new public members to a
library's API. In cases where the VM's patches introduce public
members, the patches are rewritten to introduce private members
instead.
- Patches should not be able to replace arbitrary members, only
ones declared external. In cases where the VM's patches replace
arbitrary members, those members are declared external in the
SDK sources and dart2js's patch files are rewritten to use the
original SDK implementation.
BUG=
R=sigmund@google.com
Review-Url: https://codereview.chromium.org/2564383002 .
Clean up the VM's dart:core and dart:async library patches so that
they are clean according to the patching rules implemented in the
analyzer. Specifically:
- If a member is patched in a patch file, it must be declared external
in the SDK.
- If a member is introduced in a patch file, it must be private.
- A non-private superclass member cannot be overridden in a patch
file.
BUG=
R=lrn@google.com, sigmund@google.com
Review-Url: https://codereview.chromium.org/2563633002 .
Kevin Millikin