On Wed, 30 Aug 2023 13:56:42 GMT, Alan Bateman <al...@openjdk.org> wrote:
> In the virtual thread implementation, thread identity switches to the carrier > before freezing and switches back to the virtual thread after thawing. This > was a forced move due to issues getting JVMTI to work with virtual threads. > JVMTI can now hide events during transitions so we can invert the sequence > back to mounting before running the continuation, unmounting after freezing, > and re-mounting after thawing. This sequence is important for future changes > that will initiate the freezing from the VM. > > The change requires an update to the JFR thread sampler to skip sampling when > it samples during a transition. > > Testing: tier1-5 Marked as reviewed by mgronlun (Reviewer). ------------- PR Review: https://git.openjdk.org/jdk/pull/15492#pullrequestreview-1606720202
