This was originally added to prevent fork bombs in our test suite. Early versions of AOT for the standalone VM loaded the AOT program based on LD_LIBRARY_PATH instead of the command line arguments, so tests the tried to spawn a second script spawned themselves. The VM snapshot has since also been changed to be the same for every app, and some embedders already load multiple apps into the same process using the C API.
Embedders can still block any Isolate.spawn or spawnUri in the C callbacks if they don't want to implement loading for secondary isolates.
Change-Id: I4a4beda2a797ce26367350298eaafd7e53256b3b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152592
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Ryan Macnak
d8c5f19e01