On Wed, 31 Jan 2024 21:28:34 GMT, Alex Menkov <amen...@openjdk.org> wrote:
> FilteredFieldStream used by heap walking functions to iterate through > klass/superclasses/interfaces fields are known to have poor performance (see > [JDK-8317692](https://bugs.openjdk.org/browse/JDK-8317692) for details). > Heap walking API implementation is the last user of the klasses. > The fix reworks iteration through klass/superclasses/interfaces fields and > drops FilteredFieldStream-related code. > Additionally removed/updated includes of reflectionUtils.hpp. > > Testing: > - tier1..4; > - test/hotspot/jtreg/vmTestbase/nsk/jvmti (contains tests for different > heap walking functions); > - new test from #17580 (now the test runs several times faster). This pull request has now been integrated. Changeset: fd3042a0 Author: Alex Menkov <amen...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/fd3042a04b2d76180cb90f688e8b33156fdf3d18 Stats: 272 lines in 10 files changed: 27 ins; 221 del; 24 mod 8318566: Heap walking functions should not use FilteredFieldStream Reviewed-by: cjplummer, sspitsyn ------------- PR: https://git.openjdk.org/jdk/pull/17661
