tree 05be14fc7ce078bcf1a9e183b0eddceece0096db
parent cd53c84f5afdf420a3a31d1ef95d4a0fc5080e4e
author Martin Kustermann <kustermann@google.com> 1707310130 +0000
committer Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> 1707310130 +0000

[vm/ffi] Allow Pointer objects to be shared across isolates

We consider `Pointer` objects as simple value types. We may unbox them
in the future to be simple integers - at which point our message sending
code wouldn't even know they are pointers anymore. There's therefore no
reason to prevent sending them across `SendPort`s.

Owners of `Pointer`s may implement `Finalizable` and sending such
finalizables across `SendPort`s is prohibited.

Closes https://github.com/dart-lang/sdk/issues/50457

TEST=vm/dart/isiolates/fast_object_copy*_test

Change-Id: Ia215d119c5bb0e48e2c5dc83cc82e132f46931c1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/350822
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>