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

8202505: ctw2 tasks are timing out in hs-tier3 Summary: put CTW java_desktop_2.java test on problem list for Windows. Reviewed-by: iignatyev

8200466: Revisit the setting of _transitive_interfaces in InstanceKlass Summary: Delay the setting of _transitive_interfaces until after initialize_supers() in fill_instance_klass(). Reviewed-by: iklam, coleenp

8202372: Diagnostic with incorrect line info generated when compiling lambda expression Summary: Add tree position to speculative lambda tree Reviewed-by: vromero, jlahoda Contributed-by: bsrbnd@gmail.com

8202140: TLAB logging is not correct for G1 Reviewed-by: tschatzl, sangheki

8191471: Elastic TLABs for G1 Reviewed-by: tschatzl, pliden

8202423: Small HTTP Client refresh Reviewed-by: chegar, dfuchs, michaelm, prappo Contributed-by: Chris Hegarty <chris.hegarty@oracle.com>, Daniel Fuchs <daniel.fuchs@oracle.com>, Michael McMahon <michael.x.mcmahon@oracle.com>, Pavel Rappo <pavel.rappo@oracle.com>

8202425: [s390] C2: Wrong unsigned comparison with 0 Summary: Remove wrong node compU_reg_imm0. Other node is already available. Reviewed-by: shade, lucy

8202130: [TESTBUG] Some appcds regression test cases fail with "Error: VM option 'PrintSystemDictionaryAtExit' is notproduct and is available only in debug version of VM" Summary: removed the PrintSystemDictionaryAtExit vm option from the tests Reviewed-by: zgu

8202334: Update javax.lang.model.util visitors for 11 Reviewed-by: jjg

8202507: Remove IO and NIO AtomicAppend tests from problem list Reviewed-by: lancea

8202484: Unused field in TimeZone Reviewed-by: lancea

8202379: ARM32 is broken after JDK-8201543 (Modularize C1 GC barriers) Reviewed-by: aph, eosterlund

8202373: Forcing eager initialization of CHM$ReservationNode avoids deoptimization Reviewed-by: martin, psandoz, dholmes, redestad

8201542: Remove unused _gc_timer field in GCMemoryManager Summary: Minor cleanup to remove unused field Reviewed-by: shade, minqi

8200167: Validate more special case invocations Reviewed-by: acorn, vlivanov, dholmes Contributed-by: John Rose <john.rose@oracle.com>, Vladimir Ivanov <vladimir.x.ivanov@oracle.com>, Tobias Hartmann <tobias.hartmann@oracle.com>

8199643: [TESTBUG] Open source common VM testbase code Reviewed-by: vlivanov, erikj, mseledtsov, gthornbr

8202399: [C1] LIRGenerator::do_CheckCast needs to exclude is_invokespecial_receiver_check() when using PatchAlot Reviewed-by: kvn Contributed-by: Vladimir Ivanov <vladimir.x.ivanov@oracle.com>

8202452: Delete test files missed from commit for 8193213&8182731. Summary: Deleted outdated tests. Reviewed-by: dholmes

8193213: Make the UseAppCDS option obsolete. 8182731: Odd handling of -XX:-UseAppCDS and -XX:SharedArchiveFile. Summary: Application class data sharing is enabled without -XX:+UseAppCDS. SharedArchiveFile is now a product flag. Reviewed-by: dholmes, ihse, erikj, ccheung

8202284: FileChannel and FileOutpuStream variants of AtomicAppend should fail silently on macOS >= 10.13 Reviewed-by: chegar

8202381: (Solaris) SIGBUS in # V [libjvm.so+0xcee494] jni_GetIntField+0x224 Reviewed-by: kbarrett, dcubed

8202383: Custom extensions for jvmti doc Reviewed-by: erikj Contributed-by: archana.nogriya@uk.ibm.com

8154204: [TESTBUG] Update DefaultUseWithClient test to handle client-less builds Summary: removed the DefaultUseWithClient.java test Reviewed-by: hseigel, jiangli

8201545: InetAddress.getByName/getAllByName should clarify empty String behavior Reviewed-by: chegar Contributed-by: Jaikiran Pai <jai.forums2013@gmail.com>

8202419: Avoid creating Permission constants early Reviewed-by: alanb, mullan

8202105: Console echo is disabled when exiting jshell Summary: Preserving original terminal echo state when Console.readPassword finishes. Reviewed-by: sherman, martin

8202366: Add macro for common loop in GCConfig Reviewed-by: eosterlund, shade

8202364: Add GCConfig::hs_err_name() to avoid GC-specific code in error reporting Reviewed-by: eosterlund, shade

8202417: [TESTBUG] Broken hard-coded dependency in serviceability/sa/ClhsdbJhisto.java Reviewed-by: alanb

8202200: set INCLUDE_SA to false on s390x by default Reviewed-by: ihse, erikj, jgeorge

8201650: Move iteration order randomization of unmodifiable Set and Map to iterators Reviewed-by: smarks, jiangli

8179071: Month value is inconsistent between CLDR and Java in some locales Summary: handled Language aliases from CLDR SupplementalMetaData Reviewed-by: naoto

8201622: Reduce unnecessary Package.complete() calls in javadoc Reviewed-by: jlahoda

8202382: Filter docs modules Reviewed-by: erikj Contributed-by: archana.nogriya@uk.ibm.com

8202273: [AOT] Graal does not support the CMS collector Summary: avoid running AOT and JVMCI tests with CMS Reviewed-by: dcubed

8201509: Zero: S390 31bit atomic_copy64 inline assembler is wrong Summary: The inline assembler for the S390 (S390 and not _LP64) has src and dst reversed thereby corrupting data Reviewed-by: shade Contributed-by: Martin Balao <mbalao@redhat.com>

8202204: Rename hotspot runtime jtreg constantPool ConstantPool directories Summary: Move the tests in the constantPool directory to a new directory named AccModule. Reviewed-by: dholmes, gtriantafill

8202367: AIX build broken after JDK-8201543 Reviewed-by: eosterlund, shade, mdoerr

6672778: G1 should trim task queues more aggressively during evacuation pauses Summary: Regularly try to drain task queues. This helps memory usage and performance during garbage collection. Reviewed-by: sjohanss, sangheki

8202082: Remove explicit CMS checks in CardTableBarrierSetAssembler Reviewed-by: shade, kbarrett

8202230: Provide accessors for JNIHandles storage objects Summary: Add JNIHandles::[weak_]global_handles(). Reviewed-by: coleenp, tschatzl

8202179: Compilation fails with assert(n->is_expensive()) failed: expensive nodes with non-null control here only Summary: Only treat the SqrtFNode as expensive if the control input is not NULL. Reviewed-by: kvn, roland

8202325: [aix] disable warnings-as-errors by default Reviewed-by: goetz, erikj, ihse

8201543: Modularize C1 GC barriers Reviewed-by: pliden, rbackman, rkennke

8201367: assert(current != first_mem) failed: corrupted memory graph in superword code Summary: don't rely on the RPO order to find the "first" and "last" loads of the pack Reviewed-by: kvn