8160399: is_oop_or_null involves undefined behavior
8164984: Improper use of is_oop in production code
Summary: replace oop->is_oop*() with oopDesc::is_oop*(oop) so this pointer can be verified
Reviewed-by: iklam, kvn, dholmes

8173335: Improve logging for j.l.ref.reference processing
Summary: Add logs for each phases of references and stats for each worker threads
Reviewed-by: tschatzl, shade

8181917: Refactor UL LogStreams to avoid using resource area
Reviewed-by: ehelin, mlarsson

8183552: Move align functions to align.hpp
Reviewed-by: stuefe, pliden

8178500: Replace usages of round_to and round_down with align_up and align_down
Reviewed-by: rehn, tschatzl

8178499: Remove _ptr_ and _size_ infixes from align functions
Reviewed-by: rehn, tschatzl

8178489: Make align functions more type safe and consistent
Reviewed-by: mgerdin, rehn

8174749: Use hash table/oops for MemberName table
Summary: Add a Java type called ResolvedMethodName which is immutable and can be stored in a hashtable, that is weakly collected by gc
Reviewed-by: sspitsyn, stefank, jrose

8173421: Obsolete and expired flags for JDK 10 need to be removed and related tests updated
Reviewed-by: lfoltan, mikael, dcubed

8166862: CMS needs klass_or_null_acquire
Summary: Change CMS non-assert uses of klass_or_null to klass_or_null_acquire.
Reviewed-by: tschatzl, mgerdin

8165949: Serial and ConcMarkSweep do not unload strings when class unloading is disabled
Reviewed-by: mgerdin, tschatzl, stefank

8166276: Refactor gen_process_roots to allow simpler fix for 8165949
Reviewed-by: mgerdin, stefank
Contributed-by: jesper.wilhelmsson@oracle.com, stefan.johansson@oracle.com

8033552: Fix missing missing volatile specifiers in CAS operations in GC code
Summary: Add missing volatile specifiers.
Reviewed-by: kbarrett, tschatzl

8165292: The gc+task logging is repeated a lot, decreasing the usefulness of -Xlog:gc*=info
Summary: Separate number of workers used debugging information from adaptive worker sizing log messages.
Reviewed-by: ehelin, sjohanss, jmasa

8157907: Incorrect inclusion of atomic.hpp instead of atomic.inline.hpp
Summary: Remove atomic.inline.hpp and move the contents back into atomic.hpp
Reviewed-by: stefank, pliden, simonis

8159073: : Error handling incomplete when creating GC threads lazily
Reviewed-by: drwhite, tschatzl, sangheki

8026752: Cancel MetaspaceGC request for a CMS concurrent collection after GC
Reviewed-by: sjohanss, sangheki

8156548: gc/gctests/StringInternSyncWithGC2 fails with Test level exit status: 151
Summary: Avoid repeated verification.
Reviewed-by: jmasa, drwhite

8153582: Logging of ConcGCThreads is done too early
Summary: ConcGCThreads is logged as 0 because it hasn't been initialized yet.
Reviewed-by: tschatzl, dfazunen

8155257: ParNew/CMS: Clean up promoted object tracking
Reviewed-by: jmasa, ysr

8141501: Problems with BitMap buffer management
Reviewed-by: pliden, kbarrett

8079843: do_young_space_rescan - comment out of sync with code
Reviewed-by: mgerdin, sjohanss, ehelin, tschatzl

8152962: CMSCollector::shouldConcurrentCollect incorrectly logs against the debug stream
Reviewed-by: brutisso, sjohanss

8152180: SIGFPE in CMSCollector::preclean with big CMSScheduleRemarkSamplingRatio
Summary: Rephrased the calculation routine to avoid an overflow for CMSScheduleRemarkSamplingRatio
Reviewed-by: jwilhelm, drwhite

8152632: Rename LogHandle(...) to Log(...)
Reviewed-by: brutisso, mlarsson, rprotacio

8153302: [BACKOUT] STW phases at Concurrent GC should count in PerfCounter
Reviewed-by: jmasa, jwilhelm

8151674: STW phases at Concurrent GC should count in PerfCounter
Reviewed-by: jmasa, sla, tschatzl

8152100: Rework and unify the GC phase logging
Reviewed-by: sjohanss, jwilhelm

8140257: Add support for "gc service threads" to ConcurrentGCThread
Summary: Push up the common run() and stop() methods from subclasses to ConcurrentGCThread, as well as declaration iof run_service() stop_service().
Reviewed-by: kbarrett, pliden

8151604: Rely on options range checking rather than explict checks
Reviewed-by: jwilhelm, drwhite, sangheki

8151605: Change warning() to log_warning(gc) in the GC code
Reviewed-by: jwilhelm, jmasa

8151603: Use error stream instead of tty for logging before ShouldNotReachHere()
Reviewed-by: mgerdin, sjohanss

8149826: Concurrent misspelled in the CMS logging
Reviewed-by: david

8149541: Use log_error() instead of log_info() when verification reports a problem
Reviewed-by: jwilhelm, tbenson

8149035: Make the full_gc_dump() calls be recorded as part of the GC
Reviewed-by: jmasa, sjohanss

8146395: Add inline qualifier in oop.hpp and fix inlining in gc files
Summary: Fix remaining issues after 8146401. Also fix windows VS2010 linkage problem (g1OopClosures.hpp).
Reviewed-by: stefank, mgerdin

8146690: Make all classes in GC follow the naming convention.
Reviewed-by: dholmes, stefank

8068394: Trace event for concurrent GC phases
Summary: Add concurrent phase events for CMS and G1
Reviewed-by: brutisso, stefank

8143215: gcc 4.1.2: fix three issues breaking the build.
Summary: Also fix some more recent introduced missing casts.
Reviewed-by: stuefe, simonis, kbarrett, tschatzl

8145092: Use Unified Logging for the GC logging
Summary: JEP-271. VM changes contributed by brutisso, test changes contributed by david.
Reviewed-by: sjohanss, david, brutisso
Contributed-by: bengt.rutisson@oracle.com, david.lindholm@oralce.com

8140485: Class load and creation cleanup
Reviewed-by: hseigel, coleenp, sspitsyn

8143544: Make CMSCollector::is_cms_reachable() non-product
Reviewed-by: ysr, tschatzl

8140404: Revert the removal of CMSTestInFreeList
Reviewed-by: jmasa, brutisso

8135318: CMS wrong max_eden_size for check_gc_overhead_limit
Reviewed-by: jmasa, simonis
Contributed-by: ivan.galkin@sap.com

Merge

8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
Reviewed-by: stuefe, coleenp, roland

8139952: Remove UseCMSAdaptiveFreeLists, UseAsyncConcMarkSweepGC, CMSDictionaryChoice, CMSOverflowEarlyRestoration and CMSTestInFreeList
Reviewed-by: jwilhelm, ecaspole

Merge

8139341: Hide ExtendedOopClosure::_ref_processor
Summary: Make ExtendedOopClosure::_ref_processor private.
Reviewed-by: mgerdin, sjohanss

Merge

8136421: JEP 243: Java-Level JVM Compiler Interface
Reviewed-by: ihse, alanb, roland, coleenp, iveresov, kvn, kbarrett

8139294: TestGCEventMixedWithCMSConcurrent.java still fails after JDK-8134953
Reviewed-by: jwilhelm, ecaspole

8134953: Make the GC ID available in a central place
Reviewed-by: pliden, jmasa

8080775: Better argument formatting for assert() and friends
Reviewed-by: kbarrett, pliden

8134797: Remove explicit casts in CollectorPolicy hierarchy
Summary: Removed the explicit casts.
Reviewed-by: jwilhelm, tschatzl, pliden

8134626: Misc cleanups after generation array removal
Reviewed-by: david, dholmes, tschatzl

8129417: Oop iteration clean-up to remove oop_ms_follow_contents
Reviewed-by: pliden, ehelin

8133349: CMS: Assert failed: Ctl pt invariant
Summary: _survivor_chunk_array should be sized based on PLAB::min_size() not ThreadLocalAllocBuffer::min_size()
Reviewed-by: tschatzl, jwilhelm

8087323: Unify and split the work gang classes
Reviewed-by: jmasa, sjohanss

8078904: CMS: Assert failed: Ctl pt invariant
Summary: Survivor rescan array now baed on MinTLABSize so all entries will fit
Reviewed-by: tschatzl, kbarrett

8129108: nmethod related crash in CMS
Summary: Add SO_AllCodeCache to root scanning options when not unloading classes with a CMS collection cycle
Reviewed-by: mgerdin, jwilhelm

8081202: Hotspot compile warning: "Invalid suffix on literal; C++11 requires a space between literal and identifier"
Summary: Need to add a space between macro identifier and string literal
Reviewed-by: stefank, dholmes, kbarrett

8077842: Remove the level parameter passed around in GenCollectedHeap
Reviewed-by: kbarrett, mgerdin

8081382: Make flags ParallelGCThreads and ConcGCThreads of type uint
Reviewed-by: drwhite, stefank

8080879: Remove FlexibleWorkGang::set_for_termination
Reviewed-by: brutisso, kbarrett, pliden

8080840: Clean up active_workers() asserts
Reviewed-by: kbarrett, jmasa

8080113: Remove CollectedHeap::set_par_threads()
Reviewed-by: jmasa, kbarrett

8080110: Remove usage of CollectedHeap::n_par_threads() from root processing
Reviewed-by: jmasa, kbarrett

8080584: isGCActiveMark.hpp should not include parallelScavengeHeap.hpp
Reviewed-by: kbarrett, tschatzl

8079792: GC directory structure cleanup
Reviewed-by: brutisso, stefank, david