> Bringover some of the changes accumulated in the loom repo to the main line, > most of these changes are test updates and have been baking in the loom repo > for several months. The motive is partly to reduce the large set of changes > that have accumulated in the loom repo, and partly to improve robustness and > test coverage in the main line. The changes don't include any of the larger > changes in the loom repo that are part of future JEPs. > > Implementation: > - Robustness improvements to not throw OOME when unparking a virtual thread. > - Robustness improvements to reduce class loading when a virtual thread parks > or parks when pinned (jdk.internal.misc.VirtualThreads is removed, > jdk.internal.event.VirtualThreadPinnedEvent is eagerly loaded) > - VirtualThread changes to reduce contention on timer queues when doing > timed-park > > Tests: > - New tests for monitor enter/exit/wait/notify (this is a subset of the tests > in the loom repo, we can't move many tests because they depend on on the > changes to the object monitor implementation) > - New test infrastructure to allow tests use a custom scheduler. This updates > many tests to make use of this infrastructure, the "local" ThreadBuidlers is > removed. > - More test scenarios added to ThreadAPI and JVMTI GetThreadStateTest.java > - New test for ThreadMXBean.getLockedMonitor with synchronized native methods > - Reimplement of JVMTI VThreadEvent test to improve reliability > - Rename some tests to get consistent naming > - Diagnostic output in several stress tests to help trace progress in the > event of a timeout > > Testing: tier1-6
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 eight additional commits since the last revision: - Merge - Fix typo in comment, missing copyright update, test nits - Merge - Drop JLA updates for this update - Merge - Merge - Update copyright headers - Initial commit ------------- Changes: - all: https://git.openjdk.org/jdk/pull/20143/files - new: https://git.openjdk.org/jdk/pull/20143/files/1fad7dff..2d3bbf46 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=20143&range=01 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20143&range=00-01 Stats: 4362 lines in 184 files changed: 2873 ins; 856 del; 633 mod Patch: https://git.openjdk.org/jdk/pull/20143.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20143/head:pull/20143 PR: https://git.openjdk.org/jdk/pull/20143
