8200557: OopStorage parallel iteration scales poorly Summary: Change representation of sequence of all blocks for better scaling. Reviewed-by: coleenp, eosterlund

8200083: Bump bootjdk requirement for JDK 11 to JDK 10 Reviewed-by: tbell, ihse

8194968: problem list actions for tools/javac/jvm/VerboseOutTest Reviewed-by: vromero

8201138: Defect in XMLEventReader.getElementText() may cause data to be skipped, duplicated or otherwise result in a ClassCastException Reviewed-by: lancea

8201793: (ref) Reference object should not support cloning Reviewed-by: psandoz, kbarrett

8202552: [AOT][JVMCI] Incorrect usage of INCLUDE_JVMCI and INCLUDE_AOT Reviewed-by: stefank, ihse

8202424: Metaspace: on chunk retirement, use correct lower limit on chunksize when adding blocks to free blocks list Reviewed-by: zgu, coleenp

8202584: de-problem list tools/javac/jvm/VerboseOutTest Reviewed-by: mcimadamore

8202447: Fix unloading_occurred to mean unloading_occurred Summary: nmethod unloading does not need to test for jvmti to set unloading_occurred, nor do we need to clean weak Klasses in metadata if unloading does not occur. Reviewed-by: sspitsyn, rehn

8199067: [REDO] NMT: Enhance thread stack tracking Summary: Precise thread stack tracking on Linux and Windows Reviewed-by: stuefe, coleenp

8202021: Improve variable naming in ReferenceProcesso Reviewed-by: sangheki, sjohanss

8202018: Move card table clear before enqueuing pending references Summary: Move card table clearing in preparation of removal of the Reference enqueue phase. Reviewed-by: sangheki, sjohanss

8201640: Use _ref_processor_* member variables directly in G1CollectedHeap Reviewed-by: sjohanss

8201492: Properly implement non-contiguous generations for Reference discovery Summary: Collectors like G1 implementing non-contiguous generations previously used an inexact but conservative area for discovery. Concurrent and STW reference processing could discover the same reference multiple times, potentially missing referents during evacuation. So these collectors had to take extra measures while concurrent marking/reference discovery has been running. This change makes discovery exact for G1 (and any collector using non-contiguous generations) so that concurrent discovery and STW discovery discover on strictly disjoint memory areas. This means that the mentioned situation can not occur any more, and extra work is not required any more too. Reviewed-by: kbarrett, sjohanss

8195002: Fix test/hotspot/jtreg/gtest/GTestWrapper.java on Alpine/Musl Reviewed-by: stuefe, clanger, mikael

8202575: Remove java/lang/String/nativeEncoding/StringPlatformChars.java from ProblemList Reviewed-by: alanb

8202303: LogStream should autoflush on destruction Reviewed-by: dholmes, rehn, zgu

8202520: JShell tests: move intermittently failing tests to tier2 Reviewed-by: darcy

8202186: AArch64: Debug build VM crashes with PrintC1Statistics option Reviewed-by: aph

8199375: [TESTBUG] Open source vm testbase monitoring tests Reviewed-by: kvn, ihse, sspitsyn

8179887: Build failure with glibc >= 2.24: error: 'int readdir_r(DIR*, dirent*, dirent**)' is deprecated Summary: Use readir rather than readdir_r on Linux. Reviewed-by: kbarrett, stuefe, andrew Contributed-by: Michal Vala <mvala@redhat.com>

8191798: redo nested ThreadsListHandle to drop Threads_lock Summary: Refactor Thread hazard ptrs and nested ThreadsLists into SafeThreadsListPtr. Reviewed-by: dcubed, eosterlund, rehn Contributed-by: erik.osterlund@oracle.com, daniel.daugherty@oracle.com

8202398: Optimize Arrays.deepHashCode Reviewed-by: psandoz

8201634: Random seedUniquifier uses incorrect LCG Summary: Correct typo in constant from L'Ecuyer Reviewed-by: dl, psandoz

8202397: Typo in X-Buffer javadoc Reviewed-by: psandoz

8201817: Taglet.init should be called with the "primary" doclet Reviewed-by: ksrini

8202418: Remove explicit CMS checks in CardTableBarrierSetAssembler: ARM32 leftovers Reviewed-by: eosterlund

8201786: Modularize interpreter GC barriers: leftovers for ARM32 Reviewed-by: enevill, eosterlund