State of Loom

[Mike Rettig]

On Wed, May 27, 2020 at 7:08 AM Ron Pressler <ron.pressler at oracle.com> wrote:
>There is no impact Of any kind on code that does not block virtual threads.
>
> — Ron

Can you elaborate on how that is achieved? In the jvm when a blocking
call occurs, there are two different behaviors for an OS thread and a
virtual thread.  Is the cost avoided by the os thread via dynamic
dispatch?  How do you prevent even a small performance impact for OS
threads?

Mike