This makes it more closely mirror the Dart_NativeEntryResolver,
and acts as an extra sanity check that signatures (roughly)
align between the FfiNative decl. and the native function.
TEST=Updated runtime/vm/dart_api_impl_test.cc
Change-Id: I40799dc583ec14db14dc453afed4e2d1eb06fced
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212566
Commit-Queue: Clement Skau <cskau@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Per breaking change #45451 we are removing support for dart-ext:
style native extensions from the Dart VM.
This CL removes the associated VM code, tests and samples. It also ports
a single test which used dart-ext: import to use FFI instead.
TEST=ci
Bug: https://github.com/dart-lang/sdk/issues/45451
Change-Id: Iae984bce32baf29a950b5de1323939006a217b94
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212050
Commit-Queue: Slava Egorov <vegorov@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
communicate with the kernel isolate while accepting compilation results
during a hot reload.
TEST=reload bot tests.
Change-Id: I55f983cc8461c89e91bf1bef84f39dcda61e8142
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/210942
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
The 'File' object created in the async file open method is leaked
if the operation is not completed when the isolate shuts down
with an unhandled exception.
This change adds a finalizable state for the 'File' object so that
the message deletion that happens when ports are closed could run
the callback to clean up the 'File' object.
TEST=new tests added
Change-Id: I64c18a7905261b0fc7bf9f220086791478232d0d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/211340
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
This reverts commit b67f45f955.
Reason for revert: This seems to cause a crash on ARMv7 aot compiled code.
Original change's description:
> [VM/Runtime] Fix 'File' object leak in async file open operation
>
> The 'File' object created in the async file open method is leaked
> if the operation is not completed when the isolate shuts down
> with an unhandled exception.
> This change adds a finalizable state for the 'File' object so that
> the message deletion that happens when ports are closed could run
> the callback to clean up the 'File' object.
>
> TEST=new tests added
>
> Change-Id: I4a3cb28370d27306c795c1914aeb5c18a1d85e2b
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/210761
> Reviewed-by: Alexander Aprelev <aam@google.com>
> Commit-Queue: Siva Annamalai <asiva@google.com>
TBR=aam@google.com,rmacnak@google.com,asiva@google.com
Change-Id: Ie91aadd318ef19a0bb4d7f769c9e876e76d719d8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/211021
Reviewed-by: William Hesse <whesse@google.com>
Commit-Queue: William Hesse <whesse@google.com>
The 'File' object created in the async file open method is leaked
if the operation is not completed when the isolate shuts down
with an unhandled exception.
This change adds a finalizable state for the 'File' object so that
the message deletion that happens when ports are closed could run
the callback to clean up the 'File' object.
TEST=new tests added
Change-Id: I4a3cb28370d27306c795c1914aeb5c18a1d85e2b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/210761
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
not used anywhere
Enabling of the timeline streams is done using command line flags
during initialization and no embedder uses this API function
(It was added when Mojo was supported).
TEST=ci
Change-Id: Ide9205b9ecd703e2ccdab7a85e8a79c48d98f180
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/209850
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
This brings the native port deserializer into agreement with the native port serializer and the interpretation of TypedData::length_.
TEST=ci
Change-Id: I52eb28af7292fc15b0ad4779dc4d4e723f6e128b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/208283
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Add Dart_TimelineGetTicks and Dart_TImelineGetTicksFrequency to the
dart_api.h per the request made in
https://github.com/dart-lang/sdk/issues/46665
TEST=added new unit test in dart_api_impl_test.cc
Change-Id: Ib37ec2088d2e61f56e61026e431c3777608cd9a7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/207900
Commit-Queue: Zach Anderson <zra@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
This is needed for the Flutter Engine to use a prebuilt Dart SDK as in
https://github.com/flutter/engine/pull/26931. When using a prebuilt
Dart SDK, the rules producing the built SDK are directed to a
different location so that GN doesn't warn about multiple rules that
produce the same file.
TEST=locally with a flutter/engine checkout
Change-Id: I4095f379c772c63f93a1c88c7f4e44804f3a6fc7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/204760
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Zach Anderson <zra@google.com>
events on Developer stream.
Also removes intrinsic implementations for UserTag_makeCurrent to allow
for service events to be sent on UserTag change.
TEST=DartAPI_UserTags,pkg/vm_service/test/user_tag_changed_test.dart
Change-Id: I5dc9ee77c0048590d3c6e33a652eee5bc3bf522a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/204440
Commit-Queue: Ben Konyi <bkonyi@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reduces VM code size by about 33k.
TEST=ci
Change-Id: Ifc74284fa69fe209ebf12566ca81bda765f19057
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/202863
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Adds support for marking external functions as @FfiNative's,
which will be called using fast FFI calls.
Resolution happens by calling out to a new embedder provided
Dart_FfiNativeResolver which the embedder can specify via
Dart_SetFfiNativeResolver.
TEST=vm/cc/DartAPI_FfiNativeResolver
Bug: https://github.com/dart-lang/sdk/issues/43889
Change-Id: I3cfff360b05314499a81444b90f4ea0a1b937b0b
Cq-Do-Not-Cancel-Tryjobs: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/170092
Commit-Queue: Clement Skau <cskau@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Such that runtime/include/internal/dart_api_dl_impl.h ends up in
include/internal/dart_api_dl_impl.h in the sdk release.
Long explanation:
https://dart-review.googlesource.com/c/sdk/+/164320 tried to recover the
folder structure but failed to do so correctly. It put
runtime/include/internal/dart_api_dl_impl.h in
include/runtime/dart_api_dl_impl.h rather than
include/internal/dart_api_dl_impl.h.
The gn copy action only supports a single `outputs` string.
https://gn.googlesource.com/gn/+/HEAD/docs/reference.md#var_outputs
This string can have 'placeholders'.
https://gn.googlesource.com/gn/+/HEAD/docs/reference.md#placeholders
The only placeholder that preserves the original folder structure,
without also nesting deeply inside folders is `source_target_relative`.
If `source_target_relative` inside sdk/BUILD.gn it starts including
`runtime/include/` in its path. So the only way to achieve the correct
copy is by doing it in runtime/include/BUILD.gn.
TEST=Manual testing, we don't have tests verifying the SDK structure.
Change-Id: I9d503626266edcdd8417f5cafb0f8ff9746f89f7
Cq-Include-Trybots: luci.dart.try:dart-sdk-linux-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/200866
Reviewed-by: Tess Strickland <sstrickl@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
`Dart_NewWeakPersistentHandle` and `Dart_NewFinalizableHandle` in
`dart_api.h` do no longer accept `Pointer`s and subtypes of `Struct`s
as values passed in to the `object` parameter.
Expandos no longer accept `Pointer`s and subtypes of `Struct`s
as values passed in to the `object` parameter.
Cleans up unused object_store->ffi_struct_class.
Reland 1: Allow importing `dart:ffi` from `dart:core` with
`--enable-ffi=false`.
Reland 2: Allow the new `_Compound` class to extend `NativeType`. (This
got triggered in this CL on the build because of the import
from `dart:core`.)
Closes: https://github.com/dart-lang/sdk/issues/45071
Breaking change: https://github.com/dart-lang/sdk/issues/45072
TEST=vm/cc/DartAPI_FinalizableHandleErrors
TEST=vm/cc/DartAPI_WeakPersistentHandleErrors
TEST=tests/ffi(_2)/expando_test.dart
Change-Id: I133278e16bd75cd2bb6234e7ddf042ffa0a54fd6
Cq-Include-Trybots: luci.dart.try:dart-sdk-linux-try,dart-sdk-mac-try,dart-sdk-win-try,vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64-try,vm-kernel-asan-linux-release-x64-try,vm-kernel-mac-debug-x64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-linux-debug-x64-try,vm-kernel-nnbd-linux-debug-x64-try,vm-kernel-nnbd-linux-debug-ia32-try,vm-kernel-nnbd-mac-release-x64-try,vm-kernel-nnbd-win-debug-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-precomp-win-release-x64-try,vm-kernel-reload-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-kernel-precomp-obfuscate-linux-release-x64-try,vm-kernel-msan-linux-release-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-precomp-android-release-arm_x64-try,analyzer-analysis-server-linux-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-linux-debug-x64c-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195079
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
`Dart_NewWeakPersistentHandle` and `Dart_NewFinalizableHandle` in
`dart_api.h` do no longer accept `Pointer`s and subtypes of `Struct`s
as values passed in to the `object` parameter.
Expandos no longer accept `Pointer`s and subtypes of `Struct`s
as values passed in to the `object` parameter.
Cleans up unused object_store->ffi_struct_class.
Closes: https://github.com/dart-lang/sdk/issues/45071
Breaking change: https://github.com/dart-lang/sdk/issues/45072
TEST=vm/cc/DartAPI_FinalizableHandleErrors
TEST=vm/cc/DartAPI_WeakPersistentHandleErrors
TEST=tests/ffi(_2)/expando_test.dart
Change-Id: I9af6d0173db60614091068c218391f73756c135f
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195061
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
This reverts commit 2376ab5186.
Reason for revert: Importing dart:ffi from dart:core breaks the VM when using --enable-ffi=false
Original change's description:
> [vm/ffi] Disallow `Pointer`s and structs in finalizers and expandos
>
> `Dart_NewWeakPersistentHandle` and `Dart_NewFinalizableHandle` in
> `dart_api.h` do no longer accept `Pointer`s and subtypes of `Struct`s
> as values passed in to the `object` parameter.
>
> Expandos no longer accept `Pointer`s and subtypes of `Struct`s
> as values passed in to the `object` parameter.
>
> Cleans up unused object_store->ffi_struct_class.
>
> Closes: https://github.com/dart-lang/sdk/issues/45071
> Breaking change: https://github.com/dart-lang/sdk/issues/45072
>
> TEST=vm/cc/DartAPI_FinalizableHandleErrors
> TEST=vm/cc/DartAPI_WeakPersistentHandleErrors
> TEST=tests/ffi(_2)/expando_test.dart
>
> Change-Id: I1f11adfa073c7d2c979f3c2bb15c7444c7c767a0
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/186280
> Commit-Queue: Daco Harkes <dacoharkes@google.com>
> Reviewed-by: Martin Kustermann <kustermann@google.com>
TBR=lrn@google.com,vegorov@google.com,kustermann@google.com,dacoharkes@google.com
Change-Id: Ib76d27e59391dc6107d3f8e8fba3d67640ea9a5c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195060
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
`Dart_NewWeakPersistentHandle` and `Dart_NewFinalizableHandle` in
`dart_api.h` do no longer accept `Pointer`s and subtypes of `Struct`s
as values passed in to the `object` parameter.
Expandos no longer accept `Pointer`s and subtypes of `Struct`s
as values passed in to the `object` parameter.
Cleans up unused object_store->ffi_struct_class.
Closes: https://github.com/dart-lang/sdk/issues/45071
Breaking change: https://github.com/dart-lang/sdk/issues/45072
TEST=vm/cc/DartAPI_FinalizableHandleErrors
TEST=vm/cc/DartAPI_WeakPersistentHandleErrors
TEST=tests/ffi(_2)/expando_test.dart
Change-Id: I1f11adfa073c7d2c979f3c2bb15c7444c7c767a0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/186280
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
The verbosity option allows for specifying the CFE output verbosity
Fixes https://github.com/dart-lang/sdk/issues/44727
TEST=existing tests compile_test.dart and run_test.dart have new tests
Change-Id: I3d4e50811f84650aacf774ddb370a6eb765b9b24
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/181100
Commit-Queue: Siva Annamalai <asiva@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
This CL removes the unused entry points in the C API. This is a breaking
API change but we don't promise normal Dart C API stability and existing
known embedders don't specify this flag.
TEST=Pure refactoring - relying on existing test coverage.
Issue https://github.com/dart-lang/sdk/issues/36097
Change-Id: Ic27662743e48f5f5cfbf770baf2cd255ed3f15b5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/177121
Reviewed-by: Alexander Aprelev <aam@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Dart_CreateLightweightIsolate API:
This API can be used by embedders to create a lightweight isolate
(inside an existing isolate group).
It is the analogous to Dart_CreateIsolateGroup - though taking a
parent isolate as parameter (inside whose IG we create a new isolate)
instead of taking kernel/snapshot data.
Right now this API works on AOT and returns an error in JIT, both cases
are covered by the test.
Dart_RunLoopAsync:
The API can be used by embedders to transfer ownership of an isolate to
the VM, which will take care of running the message handling loop and
shuts the isolate down once the last receive port has been closed.
It does allow listening to error/exit events generated by the message
loop implementation as well as allows setting errors-are-fatal,
effectively the same event-loop related parameters from the
`Isolate.spawn()` API, just in Dart.
It's the embedders responsibility to first launch initial dart code
which will take care of responding to events (i.e. directly/indirectly
open a receive port) - otherwise the isolate cannot be talked to and
would immediately shut down.
Since our vm/cc tests do support running in AOT, we use a hybrid
approach to test the functionality: We let a normal Dart test call a
small C wrapper using FFI, to create a lightweight isolate, run it on a
new thread and join that thread.
TEST=vm/dart{,_2}/isolates/dart_api_create_lightweight_isolate_test
Issue https://github.com/dart-lang/sdk/issues/36097
Closes https://github.com/dart-lang/sdk/issues/44088
Change-Id: Id77ba928793fdb517f6cb7e8130df98a0366ddd6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/170983
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Changes Dart_NewWeakPersistentHandle to no longer auto delete the
weak persistent handle.
Changes the signatures of WeakPersistentHandleFinalizers to no longer
have access to the handle.
Flutter PR: https://github.com/flutter/engine/pull/19843
g3 presubmit: cl/318028238
Issue: https://github.com/dart-lang/sdk/issues/42312
TEST=runtime/vm/dart_api_impl_test.cc
Change-Id: I3f77db9954d9486759f903b78c03a494f73c68ba
Cq-Include-Trybots:dart/try:vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64-try,app-kernel-linux-debug-x64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-android-release-arm64-try,vm-kernel-asan-linux-release-x64-try,vm-kernel-msan-linux-release-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-linux-release-simarm-try,vm-kernel-linux-release-simarm64-try,vm-kernel-precomp-android-release-arm_x64-try,vm-kernel-precomp-obfuscate-linux-release-x64-try,dart-sdk-linux-try,analyzer-analysis-server-linux-try,analyzer-linux-release-try,front-end-linux-release-x64-try,vm-kernel-precomp-win-release-x64-try,vm-kernel-mac-debug-x64-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-kernel-nnbd-linux-debug-x64-try,analyzer-nnbd-linux-release-try,front-end-nnbd-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151525
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Core snapshots should be agnostic to the sound null safety mode
(so they can be used both in weak and strong modes), and snapshot
writer verifies that.
Snapshot::kFull was previously used both for core snapshots and
app snapshots on ia32. However, app snapshots are not guaranteed to
be agnostic, which appeared as failures on a few test on ia32.
Also, VM should be able to detect null safety mode from app snapshots,
even if they do not contain code, but null safety mode was not
written into features string of kFull snapshots.
In order to disambiguate core snapshots, a new Snapshot::Kind is
added. Snapshot::kFullCore works exactly as Snapshot::kFull, except
for verification of agnostic null safety and snapshot features string
omitting null safety mode. All snapshots except kFullCore now have
null safety mode included into their features string.
Fixes https://github.com/dart-lang/sdk/issues/43626
Issue https://github.com/dart-lang/sdk/issues/43613
Change-Id: I8cd3b049ef4e428dd5e1ce666d4c7aa3b596d70c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/166308
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Before, picking a symbol name for a Code object when generating
assembly required adding a placeholder entry in the Dwarf object,
because the Dwarf object separately used a SnapshotTextObjectNamer
to determine the appropriate symbol name to use in relocations.
Instead, now the ImageWriter subclasses are entirely responsible for
creating the symbol name for a given Code object, and that name is
passed when adding the Code object to the Dwarf object.
For Elf output, we eagerly create symbols for sections and Code objects
again in the appropriate symbol table, and so looking up the start of a
given section or Code object can be done simply by asking for the
corresponding symbol's address, removing special case methods and other
workarounds.
We also clean up the generated static and dynamic symbol tables by
only generating local symbols for Code objects and BSS sections (these
are local in assembly output also), and only adding global symbols to
the dynamic symbol table.
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-mac-release-simarm64-try,vm-kernel-mac-debug-x64-try,vm-kernel-win-debug-x64-try,vm-kernel-precomp-win-release-x64-try
Change-Id: Ie40c0c836681e98f345483136bb6860e5588ef30
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/166002
Reviewed-by: Martin Kustermann <kustermann@google.com>
Such that the files can be included more easily.
Change-Id: I3129b35393eaf41f90e59a530b752846085bf93e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/164163
Auto-Submit: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Jonas Jensen <jonasfj@google.com>
Turns out, even thought Heap constructs an elaborate event
object, and attaches it to the ServiceEvent, the service
does its own event construction (again).
As a result the ServiceEvent has quite a different layout
and no concept of before/after.
This CL changes Dart_GCEvent to more closely follow the
JSON event emitted by Service.
Bug: https://github.com/dart-lang/sdk/issues/43106
Change-Id: I34f33f23065ea7a92142ee7df23ab05ca91f161e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/161176
Commit-Queue: Clement Skau <cskau@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Fixes "redefinition of typedef '...' is a C11 feature" on Mac bots.
Change-Id: I9f1114279106fa83ca491e069564a9931541d6ad
Cq-Include-Trybots:dart/try:vm-kernel-mac-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/158001
Auto-Submit: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Introduces Dart_NewFinalizableHandle which does auto delete itself,
but does not allow accessing the weak referenced object.
Issue: https://github.com/dart-lang/sdk/issues/42312
Change-Id: I24ea732925122c453213c4fa3f629761c352f838
Cq-Include-Trybots:dart/try:vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64-try,app-kernel-linux-debug-x64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-kernel-precomp-linux-debug-x64-try,vm-dartkb-linux-release-x64-abi-try,vm-kernel-precomp-android-release-arm64-try,vm-kernel-asan-linux-release-x64-try,vm-kernel-msan-linux-release-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-linux-release-simarm-try,vm-kernel-linux-release-simarm64-try,vm-kernel-precomp-android-release-arm_x64-try,vm-kernel-precomp-obfuscate-linux-release-x64-try,dart-sdk-linux-try,analyzer-analysis-server-linux-try,analyzer-linux-release-try,front-end-linux-release-x64-try,vm-kernel-precomp-win-release-x64-try,vm-kernel-mac-debug-x64-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-kernel-nnbd-linux-debug-x64-try,analyzer-nnbd-linux-release-try,front-end-nnbd-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/154695
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
(Assignment of libraries to loading units is already done in the kernel generation step.)
After compiling and before serializing, we walk the program and for each Code we assign its Instructions, CodeSourceMap and CompressedStackMap to the loading unit of that Code's defining library. Deduplication may cause Instructions, CodeSourceMaps and CompressedStackMaps to belong to more than one loading unit; in this case the objects are assigned to the root loading unit. Later they can be more precisely assigned to the dominating loading unit.
All objects except some Instructions, CodeSourceMaps and CompressedStackMaps belong to the root loading unit's snapshot. This snapshot is written like an unsplit snapshot, except that when serializing Code, we will write a reference to a stub or null when the Code's Instructions, CodeSourceMap or CompressedStackMap belongs to a non-root loading unit. The snapshots of non-root loading units contain these deferred objects and references to the corresponding Code objects to patch. The types of objects we defer (Instructions, CodeSourceMaps and CompressedStackMaps) usually represent 70+% of the snapshot size.
Bare instructions mode must be disabled when splitting because we cannot have PC-relative calls between loading units. Later we can re-enable this for calls within loading units.
Broken: Compactor probably crashes we can now have an unbounded number of image pages and the compactor assumes a fixed number.
Embedder's guide:
At compile-time, gen_snapshot should be passed --loading_unit_manifest with a path, which will enable splitting and output a mapping from loading unit ids to snapshot output paths.
At runtime, sometime during isolate startup, an embedder should call Dart_SetDeferredLoadHandler, probably near an existing call to Dart_SetLibraryTagHandler. The callback is given a loading unit id, and should eventually call Dart_DeferredLoadComplete[Error].
Bug: https://github.com/dart-lang/sdk/issues/41974
Change-Id: Ib597eb87c8cd634416d5ee1f00629c5550aebb00
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152427
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
The breaking change https://github.com/dart-lang/sdk/issues/41100
changed the UTF-8 encoder to encode unpaired surrogates as replacement
characters.
However, the VM contains its own, internal UTF-8 encoder, which is used
for printing and for the Dart_StringToUTF8 function in the Dart API.
Here, this encoder is changed to also encode unpaired surrogates as
replacement characters.
Fixes https://github.com/dart-lang/sdk/issues/42094
Change-Id: I9d55168f67d124dbc7987fb759696a98e7526c29
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149292
Commit-Queue: Aske Simon Christensen <askesc@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
