> 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.
Serguei Spitsyn has updated the pull request incrementally with one additional commit since the last revision: corrections for BoundVirtualThread and test typos ------------- Changes: - all: https://git.openjdk.org/jdk/pull/13546/files - new: https://git.openjdk.org/jdk/pull/13546/files/0b26f42c..d2cc010e Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=13546&range=02 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13546&range=01-02 Stats: 20 lines in 4 files changed: 16 ins; 0 del; 4 mod Patch: https://git.openjdk.org/jdk/pull/13546.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/13546/head:pull/13546 PR: https://git.openjdk.org/jdk/pull/13546
