> Adds `jcmd <pid> Thread.vthread_scheduler` to print the virtual thread > scheduler and `jcmd <pid> Thread.vthread_pollers` to print the I/O pollers > that support virtual threads doing blocking network I/O operations. > > This is a subset of the diagnostics that we've had in the loom repo for a > long time. @larry-cable proposed a PR recently > ([pull/22121](https://github.com/openjdk/jdk/pull/22121)) to bring a version > of same into main line but it was based on an older proposal. This new PR > supplants that effort. > > The jtreg failure handler is updated to execute Thread.vthread_scheduler, > useful capture when a test fails or times out.
Alan Bateman 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 six additional commits since the last revision: - Merge branch 'master' into JDK-8337199 - VThread*Dcmd::execute changes to use helper function - Improve regex for matching poller String representation - Improve vthread_pollers output - Merge branch 'master' into JDK-8337199 - Initial commit ------------- Changes: - all: https://git.openjdk.org/jdk/pull/22414/files - new: https://git.openjdk.org/jdk/pull/22414/files/2e9619a1..ea7df830 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=22414&range=02 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22414&range=01-02 Stats: 2120 lines in 75 files changed: 842 ins; 1052 del; 226 mod Patch: https://git.openjdk.org/jdk/pull/22414.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/22414/head:pull/22414 PR: https://git.openjdk.org/jdk/pull/22414