> 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 with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 11 additional commits since the last revision: - Merge - StopThread spec: minor tweek in description of OPAQUE_FRAME error code - minor tweak of JVMTI_ERROR_OPAQUE_FRAME description - Merge - install_async_exception: set interrupt status for platform threads only - minor tweak in new test - 1. Address review comments 2. Clear interrupt bit in the TestTaskThread - corrections for BoundVirtualThread and test typos - addressed review comments on new test - fixed trailing spaces - ... and 1 more: https://git.openjdk.org/jdk/compare/59a7d7f3...925362f2 ------------- Changes: - all: https://git.openjdk.org/jdk/pull/13546/files - new: https://git.openjdk.org/jdk/pull/13546/files/940cda74..925362f2 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=13546&range=09 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13546&range=08-09 Stats: 7820 lines in 287 files changed: 5127 ins; 1309 del; 1384 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
