On Wed, 22 Mar 2023 02:12:12 GMT, Serguei Spitsyn <sspit...@openjdk.org> wrote:
> The fix is to enable virtual threads support for late binding JVMTI agents. > The fix includes: > - New function `JvmtiEnvBase::enable_virtual_threads_notify_jvmti()` which > does enabling JVMTI VTMS transition notifications in case of agent loaded > into running VM. This function executes a VM operation counting VTMS > transition bits in all `JavaThread`'s to correctly set the static counter > `_VTMS_transition_count` needed for VTMS transition protocol. > - New function `JvmtiEnvBase::disable_virtual_threads_notify_jvmti()` which > is needed for testing. It is used by the `WhiteBox` API. > - New WhiteBox function `WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, > jobject wb, jboolean enable)` needed for testing of this update. > - New regression test: `serviceability/jvmti/vthread/ToggleNotifyJvmtiTest` > > Testing: > - New test: `serviceability/jvmti/vthread/ToggleNotifyJvmtiTest` > - The originally failed tests are expected to pass now: > `runtime/vthread/RedefineClass.java` > `runtime/vthread/TestObjectAllocationSampleEvent.java` > - In progress: Run the tiers 1-6 to make sure there are no regression. This pull request has now been integrated. Changeset: a1a9ec6e Author: Serguei Spitsyn <sspit...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/a1a9ec6e46b70d5436711f89f4bf603ebacc8060 Stats: 574 lines in 15 files changed: 554 ins; 9 del; 11 mod 8297286: runtime/vthread tests crashing after JDK-8296324 Reviewed-by: lmesnik, pchilanomate, cjplummer ------------- PR: https://git.openjdk.org/jdk/pull/13133
