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 This pull request has now been integrated. Changeset: 9a83d558 Author: Alan Bateman <al...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/9a83d55887e5e3a0a2e1e020c6ccb91604672358 Stats: 49 lines in 3 files changed: 12 ins; 17 del; 20 mod 8315373: Change VirtualThread to unmount after freezing, re-mount before thawing Reviewed-by: pchilanomate, mgronlun, sspitsyn ------------- PR: https://git.openjdk.org/jdk/pull/15492
