On Wed, 19 Apr 2023 22:54:35 GMT, Serguei Spitsyn <sspit...@openjdk.org> wrote:
> This enhancement adds support of virtual threads to the JVMTI `StopThread` > function. > In preview releases before this enhancement the StopThread returned the > JVMTI_ERROR_UNSUPPORTED_OPERATION error code for virtual threads. > > The `StopThread` supports sending an asynchronous exception to a virtual > thread only if it is current or suspended at mounted state. For instance, a > virtual thread can be suspended at a JVMTI event. If the virtual thread is > not suspended and is not current then the `JVMTI_ERROR_THREAD_NOT_SUSPENDED` > error code is returned. If the virtual thread was suspended at unmounted > state then the `JVMTI_ERROR_OPAQUE_FRAME` error code is returned. > > The `StopThread` has the following description for `JVMTI_ERROR_OPAQUE_FRAME` > error code: >> The thread is a suspended virtual thread and the implementation >> was unable to throw an asynchronous exception from this frame. > > A couple of the `serviceability/jvmti/vthread` tests has been updated to > adopt to new `StopThread` behavior. > > The CSR is: https://bugs.openjdk.org/browse/JDK-8306434 > > Testing: > The mach5 tears 1-6 are in progress. > Preliminary test runs were good in general. > The JDB test `vmTestbase/nsk/jdb/kill/kill001/kill001.java` has been > problem-listed and will be fixed by the corresponding debugger enhancement > which is going to adopt JDWP/JDI specs to new behavior of the JVMTI > `StopThread` related to virtual threads. > > Also, two JCK JVMTI tests are failing in the tier-6 : >> vm/jvmti/StopThread/stop001/stop00103/stop00103.html >> vm/jvmti/StopThread/stop001/stop00103/stop00103a.html > > These two tests will be excluded from the test runs by the JCK team and then > adjusted to new `StopThread` behavior. This pull request has now been integrated. Changeset: 51b8f3cf Author: Serguei Spitsyn <sspit...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/51b8f3cfb9df3444b6226a5d5cb7f01a9ab6db6c Stats: 525 lines in 11 files changed: 501 ins; 8 del; 16 mod 8306034: add support of virtual threads to JVMTI StopThread Reviewed-by: cjplummer ------------- PR: https://git.openjdk.org/jdk/pull/13546
