8213092: Add more runtime locks for concurrent class unloading Summary: Add locks for calling CLDG::purge concurrently as well and for calling SystemDictionary::do_unloading concurrently. Reviewed-by: eosterlund, hseigel

8213751: ClassLoaderDataGraph::cld_do() should sometimes require CLDG_lock Summary: Add version of loaded_cld_do for runtime calls. Reviewed-by: eosterlund, rehn

8211326: add OS user related information to hs_err file Reviewed-by: dholmes, stuefe

8210408: Refactor java.util.ResourceBundle:i18n shell tests to plain java tests Reviewed-by: naoto

8212779: ADL Parser does not check allocation return values in all cases Summary: made to fail gracefully in case of malloc failure. Reviewed-by: kvn

8213352: Separate BufferNode allocation from PtrQueueSet Summary: Move free-list management and allocation to new class. Reviewed-by: tschatzl, sjohanss

8213723: More Monitor/mutex initialization management 8213893: StringTable_lock is unused Reviewed-by: tschatzl, dcubed, coleenp

8213926: WB_EnqueueInitializerForCompilation requests compilation for NULL Reviewed-by: kvn, roland

8213922: fix ctw stand-alone build Reviewed-by: kvn, roland

8210777: Update Graal Reviewed-by: kvn

8213373: Bulk MarkBitMap clearing methods Reviewed-by: rkennke, zgu

8213829: Remove circular dependency between g1CollectedHeap and g1ConcurrentMark Summary: Improve include statements related to g1CollectedHeap.inline.hpp Reviewed-by: kbarrett, tschatzl

8213363: X25519 private key PKCS#8 encoding/decoding is incorrect Summary: Fixed private key format to match spec in RFC 8410 Reviewed-by: mullan

8203174: [Graal] JDI tests fail with Unexpected exception: com.sun.jdi.ObjectCollectedException Reviewed-by: sspitsyn, cjplummer

8213538: VM crashes when MaxVectorSize is set to 0, 1 or 2 Summary: Require MaxVectorSize minimum 4 on 64 bit Reviewed-by: kvn, thartmann

8213736: Build fails with LOG=debug on F28 after JDK-8210958 Summary: Add --no-print-directory to make invocation of create-main-targets-include Reviewed-by: erikj, tbell

8211106: [windows] Update OS detection code to recognize Windows Server 2019 Reviewed-by: alanb, clanger, bobv

8213616: URLPermission with query or fragment behaves incorrectly Reviewed-by: chegar, dfuchs

8210024: JFR calls virtual is_Java_thread from ~Thread() Reviewed-by: kbarrett, dholmes, dcubed, egahlin

8213615: GC/C2 abstraction for escape analysis Reviewed-by: kvn, roland

8211787: javax/net/ssl/TLSCommon/TLSTest.java throws java.net.SocketTimeoutException: Read timed out Summary: java.net.SocketTimeoutException: Read timed out Reviewed-by: xuelei

8206475: Repeated word in error message Reviewed-by: sundar

Added tag jdk-12+20 for changeset 40098289d580

8213913: Redundant HTML in java.se/module-info.java Reviewed-by: lancea, mchung

8213910: Invalid HTML in java.net.http.HttpClient Reviewed-by: mchung, darcy

8213713: Minor issues during MetaspaceShared::initialize_runtime_shared_and_meta_spaces Summary: 1)Populate MetaspaceShared::_core_spaces_size early at mapping time; 2)Fix FileMapInfo::validate_shared_path_table to report failure properly; 3)Remove dead code in FileMapInfo::validate_shared_path_table. Reviewed-by: iklam, ccheung

8213622: Windows VS2013 build failure - "'snprintf': identifier not found" Summary: Replace snprintf with strlen and memcpy Reviewed-by: dholmes, mvala, kbarrett

8213818: @return has already been specified Reviewed-by: rriggs

8213795: Force explicit null check on patching placeholder offset Reviewed-by: kvn, adinn

8204142: AWT hang occurs when sequenced events arrive out of sequence in multiple AppContexts Summary: Improvements on the synchronization of SequencedEvent events from different AppContexts Reviewed-by: serb

8213709: jdk/javadoc/doclet/testValueTag/TestValueTagInModule.java missing modules declaration Reviewed-by: jjg

8211727: Adjust default concurrency settings for running tests on Sparc Reviewed-by: ctornqvi, tbell, mikael