8185133: Reference pending list root might not get marked
Summary: Ensure that pending list head is marked by initial mark
Reviewed-by: eosterlund, kbarrett, tschatzl

8169703: G1 crashes with guarantee(pretouch_gang != NULL) failed: No pretouch gang specified
Summary: Allow use of AlwaysPreTouch without passing a WorkGang.
Reviewed-by: kbarrett, dfazunen, ddmitriev

8166811: Missing memory fences between memory allocation and refinement
Summary: Refactored to have needed barrier
Reviewed-by: tschatzl, ehelin

8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
Summary: The call to ClassLoaderDataGraph::clear_claimed_marks() during initial mark in g1CollectedHeap.cpp:4420 is misplaced.
Reviewed-by: tschatzl, kbarrett

8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
Summary: G1 does not return a correct value for the CollectedHeap::millis_since_last_gc()
Reviewed-by: tschatzl, kbarrett

8157952: Parallelize Memory Pretouch
Summary: Use multiple threads to pretouch memory using -XX:+AlwaysPreTouch to use more memory bandwidth
Reviewed-by: jmasa, sangheki

8159422: Very high Concurrent Mark mark stack contention
Summary: Decrease contention on mark stack by splitting locks, and minimizing the amount of time these locks are held. Improve mark stack management.
Reviewed-by: kbarrett, mgerdin, eosterlund

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

8164936: G1 age table printout contains contents from previous GC
Summary: Split tenuring threshold update and printing into two separate parts so that they can be used independently.
Reviewed-by: jmasa, sangheki

Merge

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

8164124: [BACKOUT] G1 does not implement millis_since_last_gc which is needed by RMI GC
Reviewed-by: jprovino

8071770: G1 does not implement millis_since_last_gc which is needed by RMI GC
Summary: G1 does not return a correct value for the CollectedHeap::millis_since_last_gc
Reviewed-by: jmasa, tschatzl

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

8034842: Parallelize the Free CSet phase in G1
Reviewed-by: jmasa, ehelin

8159978: Use an array to store the collection set regions instead of linking through regions
Summary: Fix a potential problem with memory visibility in the sampling thread in the collection set by changing the way we store the collection set.
Reviewed-by: ehelin, jmasa

8156032: Clean up parallel GC specific code from vm/gc/shared/preservedMarks.cpp
Reviewed-by: stefank, tschatzl

8155634: Clean out old logging and dead code from SurvRateGroup
Reviewed-by: jmasa, tschatzl, sjohanss

8150721: Don't explicitly manage G1 young regions in YoungList
Reviewed-by: ehelin, sjohanss, tschatzl

8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
Summary: Make G1CollectedHeap owner of HotCardCache.
Reviewed-by: jmasa, mgerdin, tschatzl

8154955: Negative Other Time in gc logs due to 'Wait for Root Region Scan' not included
Summary: Move the note_gc_start() call before the wait_for_root_region_scanning() one.
Reviewed-by: kbarrett, tschatzl
Contributed-by: Yu Zhang <yu.zhang@oracle.com>

8153507: Improve Card Table Clear Task
Summary: Move card table clear code into remembered set related files. Improve work distribution of this task, and tune thread usage.
Reviewed-by: jmasa, mgerdin

Merge

8151956: Support non-continuous CodeBlobs in HotSpot
Reviewed-by: iveresov, thartmann, simonis

8155082: Refactor mutator region restriction
Reviewed-by: mgerdin, tschatzl

8151556: Use the PreservedMarks* classes for the G1 preserved mark stacks
Reviewed-by: tschatzl

8154752: Cleanup initialization of G1Policy
Reviewed-by: ehelin, tschatzl

8154452: Deferred cleanups after split of G1CollectorPolicy code
Reviewed-by: ehelin, sjohanss

8153503: Move remset scan iteration claim to remset local data structure
Reviewed-by: drwhite, mgerdin

8154154: Separate G1 specific policy code from the CollectorPolicy class hierarchy
Summary: Move G1 runtime policy code to new class G1Policy which is unrelated to CollectorPolicy
Reviewed-by: kbarrett, ehelin

8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
Reviewed-by: brutisso, jmasa, tschatzl

8152905: hs_err file is missing gc threads
Summary: List the GC threads in the hs_err file in the "Other Threads" section
Reviewed-by: dcubed, coleenp

8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
Reviewed-by: drwhite, tschatzl

8153834: G1 Card table verification fails due to concurrent region cleanup
Reviewed-by: ehelin, tschatzl

8152491: Convert TracePageSizes to use UL
Reviewed-by: sjohanss, pliden

8151386: Extract card live data out of G1ConcurrentMark
Summary: Move card live data management out of G1ConcurrentMark into extra class G1CardLiveData managed by G1RemSet
Reviewed-by: mgerdin, kbarrett

8132524: Missing includes to resourceArea.hpp
Summary: Files that use ResourceMark are missing the include of resourceArea.hpp
Reviewed-by: tschatzl, jwilhelm

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

8152952: Allow G1 phase logging to use individual number of threads
Reviewed-by: tschatzl, jmasa

8152400: Enabling TASK_STATS_ONLY filters out just enabled messages anyway
Summary: If TASK_STATS_ONLY is enabled, do not require a develop build to print messages.
Reviewed-by: pliden, tbenson

8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
Reviewed-by: tschatzl, kbarrett

8148759: G1AllocRegion::_count inconsistently used if more than one context is active
Reviewed-by: sjohanss, jwilhelm, tschatzl

Merge

8152104: G1 StringTable cleaning incorrectly logs with the stringdedup tag
Reviewed-by: mgerdin, jwilhelm, sjohanss

8151808: Factor G1 heap sizing code out of the G1CollectorPolicy
Reviewed-by: tbenson, jwilhelm

Merge

8027423: Parallel compact GC class unloading measurement includes symbol and string table time
Reviewed-by: mgerdin, jmasa

8151085: Change G1 concurrent timer and tracer measuring time
Summary: Change measuring time for G1 concurrent phases and reporting heap summary
Reviewed-by: brutisso, sjohanss

Merge

8151126: Clean up duplicate code for clearing the mark bitmaps
Summary: Merge the code to clear the mark bitmap concurrently and in the STW pause.
Reviewed-by: jmasa, tbenson

8151336: Root region scanning should be cancelled and disabled when the ConcurrentMarkThread::run_service() exits
Reviewed-by: pliden, tschatzl

8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
Reviewed-by: brutisso, jwilhelm

Merge

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

8151633: Don't keep copies of the survivor lists and counts in the G1CollectorPolicy
Reviewed-by: tbenson, tschatzl

8151178: Move the collection set out of the G1 collector policy
Summary: Create a G1CollectionSet class
Reviewed-by: jwilhelm, tbenson, tschatzl

8149834: gc/shared/gcTimer.cpp:88 assert(_is_concurrent_phase_active) failed: A concurrent phase is not active
Summary: Compare-and-exchange for concurrent gc timer related flag at G1CollectedHeap
Reviewed-by: jmasa, drwhite

8141141: Young and Old gen PLAB stats are similar in output with -XX:+PrintPLAB
Summary: Improve PLAB statistic by adding generation, output values are now in bytes, including units, and split it into multiple messages.
Reviewed-by: brutisso, sjohanss

8147121: Evacuation failure allocation statistics added too late
Summary: Move adding evacuation failure statistics to after free_collection_set.
Reviewed-by: brutisso, drwhite

Merge

8139651: ConcurrentG1Refine uses ints for many of its members that should be unsigned types
Summary: ints need to be changed to size_t
Reviewed-by: kbarrett, tbenson

Merge

8150630: Add logging for ParScanThreadState merge phase
Summary: Improve visibility of the per-thread scan state merge phase by adding appropriate logging.
Reviewed-by: jmasa, tbenson

8076463: Add logging for the preserve CM referents task
Summary: Add logging and do minor refactoring to CM referents handling task.
Reviewed-by: jmasa

8150390: Move rs length sampling data to the sampling thread
Reviewed-by: drwhite, jwilhelm

8150367: Add back information about the number of GC workers
Reviewed-by: sjohanss, tschatzl

8149013: Remove unused and dead code from G1CollectorPolicy
Reviewed-by: ehelin, jwilhelm

8149648: Add number of regions to the G1HeapSummary event
Reviewed-by: sjohanss, jwilhelm

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

8148992: VM can hang on exit if root region scanning is initiated but not executed
Reviewed-by: tschatzl, pliden, jwilhelm

8148973: Rename g1/concurrentMark.{hpp,cpp,inline.hpp} to g1/g1ConcurrentMark.{hpp,cpp,inline.hpp}
Reviewed-by: tschatzl, mgerdin

8148736: Let the G1 heap transition log regions instead of bytes
Reviewed-by: sjohanss, david

8148734: G1: Make G1GCPhaseTimes keep track of the start GC time
Reviewed-by: sjohanss, tschatzl

8147918: Rename develop_log_is_enabled() to log_develop_is_enabled()
Reviewed-by: dholmes, brutisso

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

8147814: Move verification code out of g1collectedheap
Reviewed-by: jwilhelm, tschatzl

8147611: G1 - Missing memory barrier in start_cset_region_for_worker
Reviewed-by: mgerdin, tschatzl

8145442: Add the facility to verify remembered sets for G1
Summary: Implement remembered sets verification for G1 with option VerifyRememberedSets
Reviewed-by: jmasa, mgerdin

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

8145037: Clean up FreeIdSet usage
Summary: Avoid wasting space for the unused sets
Reviewed-by: tschatzl

8146399: Refactor the BlockOffsetTable classes.
Reviewed-by: mgerdin, jwilhelm, tschatzl

8145774: Move scrubbing setup code away out of ConcurrentMark
Summary: Remove dependency of ConcurrentMark to G1RemSet.
Reviewed-by: jmasa, mgerdin

8145672: Remove dependency of G1FromCardCache to HeapRegionRemSet
Summary: Move HeapRegionRemSet::num_par_rem_sets() to G1RemSet, and document it.
Reviewed-by: mgerdin, jmasa

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

8145303: Clean up the units for log_gc_footer
Reviewed-by: david, tschatzl, goetz

8145301: Improve and unify the printout format for the g1HRPrinter.
Reviewed-by: brutisso, tschatzl

8144996: Replace the HeapRegionSetCount class with an uint
Reviewed-by: brutisso, jwilhelm

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

8144837: Improve the printout of heap regions in hs_err dump files.
Reviewed-by: stefank, sjohanss

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

8144605: Invalid format specifier when printing in_cset_state_t
Summary: Use existing CSETSTATE_FORMAT macro in format string
Reviewed-by: kbarrett, tschatzl

8143251: HeapRetentionTest.java Test is failing on jdk9/dev
Reviewed-by: tschatzl, david

8142402: G1 should not redirty cards in free regions
Reviewed-by: mgerdin, tschatzl

8144076: Move evac failure handling and reference processing to post_evacuate_collection_set
Reviewed-by: mgerdin, tschatzl

8144075: Move prepare_for_oops_into_collection_set_do into pre_evacuate_collection_set
Reviewed-by: mgerdin, tschatzl

8142404: Parallelize the restoring of preserved marks
Reviewed-by: mgerdin, tschatzl

8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
Reviewed-by: mgerdin, kbarrett, tbenson

Merge

Merge

8136681: Factor out IHOP calculation from G1CollectorPolicy
Summary: Move out existing IHOP value calculation into an implementation of a new interface called G1IHOPControl. Prepare for changes to accomodate adaptive IHOP implementation.
Reviewed-by: jmasa, mgerdin, ehelin

Merge

8142495: Move G1ParEvacuateFollowersClosure to header file
Reviewed-by: sjohanss, brutisso

8143587: G1 crashes with humongous object of size that almost fills a heap region
Reviewed-by: mgerdin, brutisso

8138681: Runtime.getFreeMemory() reports wrong value after humongous allocation.
Reviewed-by: tschatzl, mgerdin

8143252: Clean up G1CollectedHeap interface
Summary: Delete unused methods and parameters
Reviewed-by: mgerdin, tschatzl, pliden

8141570: Fix Zero interpreter build for --disable-precompiled-headers
Summary: change to include atomic.inline.hpp and allocation.inline.hpp only in .cpp files and some build fixes from Kim to build on ubuntu without devkits
Reviewed-by: kbarrett, sgehwolf, erikj

Merge

8134631: G1DummyRegionsPerGC fires assert of assert(words <= filler_array_max_size()) failed: too big for a single object
Summary: Change filler max value temporarily for G1DummyRegionsPerGC flag.
Reviewed-by: tbenson, tschatzl

8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
Summary: The crash was caused by a faulty eager humongous reclaim. The reason for reclaiming a live object was that the call to cleanupHRRS was done after dirtying cards and clearing the remembered sets for the humongous object. This could lead to one or many cards being missed.
Reviewed-by: tbenson, kbarrett, tschatzl

8140585: PLAB statistics are flushed too late
Summary: Move the call to G1EvacStats::adjust_desired_plab_sz() to after flushing the per-thread statistics.
Reviewed-by: mgerdin, jmasa

8141434: G1CollectedHeap::into_cset_dirty_card_queue_set should be moved to G1RemSet
Reviewed-by: tschatzl, mgerdin

8139867: Change how startsHumongous and continuesHumongous regions work in G1.
Reviewed-by: tschatzl, tbenson

Merge

8141134: Remove unnecessary pragma warning(disable:4355) from GC code
Reviewed-by: ehelin, simonis, stuefe

8141422: G1 eager reclaim card dirtying may dirty outside of allocated objects
Reviewed-by: sjohanss, tschatzl, ehelin

8140509: Add note_gc_start to G1CollectorPolicy
Reviewed-by: mgerdin, tschatzl

8140508: Add utility method for logging phases to G1CollectorPolicy
Reviewed-by: mgerdin, tschatzl

Merge

8139203: Consistent naming for klass type predicates
8138923: Remove oop coupling with InstanceKlass subclasses
Summary: Renamed oop_is_instance and friends, removed the functions in oop that dug down into InstanceKlass.
Reviewed-by: jrose, lfoltan, stefank

8139149: Split G1 evacuate_collection_set into multiple steps
Reviewed-by: ehelin, tschatzl

8139163: InstanceKlass::cast passes through NULL
Summary: Reduce raw (InstanceKlass*) casts and InstanceKlass::cast, which no long allows null
Reviewed-by: twisti, kbarrett

Merge

Merge

8060017: G1: Report heap sizing time
Summary: Report heap expansion time done on VM thread after collection. Previously this was included in "Other" time.
Reviewed-by: mgerdin, tschatzl

8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
Reviewed-by: mgerdin, vlivanov

Merge

8138762: Refactor setup of evacuation closures in G1
Summary: Introduce policy class containing the root scan closures.
Reviewed-by: ehelin, stefank

8069330: Adjustment of concurrent refinement thresholds does not take hot card cache into account
Summary: Measure HCC processing time separately and remove that time from the calculation of the refinement thresholds. HCC processing time is still taken into account for general pause time predictions.
Reviewed-by: tbenson, jmasa

8139427: Break out YoungList to own class.
Reviewed-by: mgerdin, jwilhelm

Merge

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

8139293: TestGCEventMixedWithG1ConcurrentMark.java fails after JDK-8134953
Reviewed-by: ecaspole, jwilhelm

8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
Summary: Avoided G1 OutOfMemoryError by adding extra expand heap call
Reviewed-by: jwilhelm, tschatzl

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

8136701: Remove YOUNG_LIST_VERBOSE code from G1CollectedHeap
Reviewed-by: stefank, jwilhelm

8135260: Split G1CollectorPolicy::finalize_cset into two parts
Reviewed-by: tschatzl, mgerdin

8135025: Error message is repeated for large value at G1ConcRefinementThreads
Summary: Changed error handling when G1ConcRefinementThreads creation failed
Reviewed-by: jwilhelm, kbarrett, tschatzl

8135154: Move cards scanned and surviving young words aggregation to G1ParScanThreadStateSet
Reviewed-by: tschatzl, ehelin

8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
Reviewed-by: tschatzl, ehelin

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

8135012: Don't use G1RootProcessor when scanning remembered sets
Reviewed-by: jmasa, ecaspole

8134857: Inconsistency in maximum TLAB/PLAB size and humongous object size
Summary: Align TLAB/PLAB size with exact humongous object size threshold, not that value -1.
Reviewed-by: jmasa, dfazunen

8134509: G1ParCopyClosure does not need a ReferenceProcessor
Reviewed-by: stefank, mgerdin

8134504: Remove usage of EvacuationInfo from G1CollectorPolicy
Reviewed-by: mgerdin, jwilhelm

8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
Summary: Handle shared string mapping failures.
Reviewed-by: tschatzl, kbarrett, ddmitriev, hseigel
Contributed-by: tom.benson@oracle.com, jiangli.zhou@oracle.com

8073146: G1 merges thread local age tables too early with global age table
Summary: Move merging of age and survivor table to the end of GC.
Reviewed-by: mgerdin, david

8040162: Avoid reallocating PLABs between GC phases in G1
Summary: Allocate G1ParScanThreadState at the start of GC and only deallocate at the end of GC. This automatically keeps the current PLAB intact without flushing it (and loosing lots of memory) for every reallocation.
Reviewed-by: david, mgerdin

8133530: Add JFR event for evacuation statistics
Summary: Introduce two new JFR events for young/old generation allocation statistics based on previous changes.
Reviewed-by: ehelin, mgerdin

8073013: Add detailed information about PLAB memory usage
Summary: Track and provide information about direct allocation, region end waste and failure waste for G1.
Reviewed-by: jmasa, david, ehelin, mgerdin

8133470: Uses of Atomic methods in plab.hpp should be moved to .inline.hpp file
Summary: Fix include file dependencies according to general guidelines for plab.hpp
Reviewed-by: ehelin, mgerdin

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

8133042: Remove some direct accesses of G1Allocator to G1CollectedHeap members
Summary: Remove direct access to private members of G1CollectedHeap from G1Allocator and G1ArchiveAllocator. Allows removal of friend delcarations.
Reviewed-by: kbarrett, jmasa, jwilhelm

8133047: Rename G1ParScanThreadState::_queue_num to _worker_id
Reviewed-by: jmasa, jwilhelm

8133043: Clean up code related to termination stats printing
Summary: Reformat termination stats related code to make it look more similar to existing code.
Reviewed-by: jwilhelm, jmasa

8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
Summary: Fix naming of G1ParGCAllocator, decrease dependencies between G1CollectedHeap, G1Allocator and G1AllocRegion, additional documentation.
Reviewed-by: mgerdin, jmasa, kbarrett

8132148: G1 hs_err region dump legend out of sync with region values
Summary: Use E for Eden, S for Survivor, O for Old
Reviewed-by: tschatzl, tbenson

8004687: G1: Parallelize object self-forwarding and scanning during an evacuation failure
Summary: Use the regular task queue during evacuation failure and allow per-thread preserved header queues to remove the global lock during evacuation failure.
Reviewed-by: mgerdin, jmasa
Contributed-by: Walter Florian Gugenberger <walter.gugenberger@gmail.com>

8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
Summary: G1Allocator::_summary_bytes_used fits better in G1CollectedHeap since we added the archive allocator. Move it back to the original location.
Reviewed-by: mgerdin, tbenson

Merge

8079555: REDO - Determining the desired PLAB size adjusts to the the number of threads at the wrong place
Summary: Calculate the desired PLAB value for a single thread and then return desired PLAB size according to the current number of threads when needed
Reviewed-by: jmasa, tschatzl

8129558: Coalesce dead objects during removal of self-forwarded pointers
Summary: To improve performance of self-forwarding fixup during evacuation failure, coalesce the work done for dead objects.
Reviewed-by: mgerdin, tbenson, tonyp

Merge

8129626: G1: set_in_progress() and clear_started() needs a barrier on non-TSO platforms
Summary: Also reviewed by vitalyd@gmail.com
Reviewed-by: pliden, bpittore, bdelsart

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

8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
Reviewed-by: pliden, tschatzl

8042668: GC Support for shared heap ranges in CDS
Summary: Added "Archive Region" support to the G1 GC
Reviewed-by: tschatzl, brutisso
Contributed-by: tom.benson@oracle.com

8025608: GC trace events missing nursery size information
Reviewed-by: sjohanss, mgerdin

7097567: G1: abstract and encapsulate collector phases and transitions between them
Reviewed-by: mgerdin, tschatzl

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

8072913: [REDO] GCCause should distinguish jcmd GC.run from System.gc()
Summary: GCCause which is caused by GC.run diagnostic command should be different from System.gc() .
Reviewed-by: jmasa, jwilhelm

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

8080877: Don't use workers()->total_workers() when walking G1CollectedHeap::_task_queues
Reviewed-by: jmasa, drwhite

8080876: Replace unnecessary MAX2(ParallelGCThreads, 1) calls with ParallelGCThreads
Reviewed-by: kbarrett, mgerdin

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

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

8080111: Remove SubTaskDone::_n_threads
Reviewed-by: jmasa, kbarrett

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

8080585: concurrentGCThread.hpp should not include suspendibleThreadSet.hpp
Reviewed-by: kbarrett, tschatzl

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