If your browser supports origin isolation, then following iframe:
- should be in a separate process; check with, e.g., the Chrome Task Manager, Shift+Esc.
- when you click the SharedArrayBuffer button, should display that it got a
- when you click the sync script button, should display an error.
Note that the iframe does not send the
Origin-Isolation header. This demo shows how the outer page can isolate itself, even without the cooperation of the iframe.