> 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).
Alex Menkov has updated the pull request incrementally with one additional commit since the last revision: updated comment ------------- Changes: - all: https://git.openjdk.org/jdk/pull/17661/files - new: https://git.openjdk.org/jdk/pull/17661/files/d6ab43b4..1152e718 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=17661&range=03 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17661&range=02-03 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/17661.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/17661/head:pull/17661 PR: https://git.openjdk.org/jdk/pull/17661
