On Thu, 30 Mar 2023 22:58:12 GMT, Alex Menkov <amen...@openjdk.org> wrote:
> The fix updates JVMTI FollowReferences implementation to report references > from virtual threads: > - unmounted vthreads are detected, their stack references for > JVMTI_HEAP_REFERENCE_STACK_LOCAL/JVMTI_HEAP_REFERENCE_JNI_LOCAL; > - stacks of mounted vthreads are splitted into 2 parts (virtual thread stack > and carrier thread stack), references are reported with correct thread > id/class tag/object tags/frame depth; > - common code to handle stack frames are moved into separate class; > > Threads are reported as: > - platform threads: JVMTI_HEAP_REFERENCE_THREAD (as before); > - mounted vthreads (synthetic references, consider them as heap roots because > carrier threads are roots): JVMTI_HEAP_REFERENCE_OTHER; > - unmounted vthreads: not reported as heap roots. This pull request has now been integrated. Changeset: 207fbcb0 Author: Alex Menkov <amen...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/207fbcb08319c4cae976fc5248780d4b438ae5f9 Stats: 788 lines in 3 files changed: 679 ins; 80 del; 29 mod 8299414: JVMTI FollowReferences should support references from VirtualThread stack Reviewed-by: sspitsyn, kevinw ------------- PR: https://git.openjdk.org/jdk/pull/13254
