Summary: Reworked the concurrent refinement: threads activation, feedback-based threshold adjustment, other miscellaneous fixes.
Reviewed-by: apetrusenko, tonyp

Summary: Change CollectionSetChooser::printSortedHeapRegions to handle null entries in _markedRegions growable array.
Reviewed-by: jmasa, tonyp, iveresov

6908208: UseCompressedOops: array_size() returns incorrect size for MAX_INT object array following 6906727
Summary: In array_size() cast to an unsigned to avoid overflow of intermediate value.
Reviewed-by: kvn, tonyp, jmasa, jcoomes, coleenp

Summary: ensure that max and committed are non-zero (currently: at least as large as the region size).
Reviewed-by: iveresov, mchung

Summary: size_t max_size() hides size_t max_size() const.
Reviewed-by: jmasa, ysr

Summary: G1 reports committed memory instead of reserved memory from the Runtime.maxMemory() method
Reviewed-by: ysr, jmasa

Summary: Introduced a new write_ref_array(HeapWords* start, size_t count) method that does the requisite MemRegion range calculation so (some of the) clients of the erstwhile write_ref_array(MemRegion mr) do not need to worry. This removed all external uses of array_size(), which was also simplified and made private. Asserts were added to catch other possible issues. Further, less essential, fixes stemming from this investigation are deferred to CR 6904516 (to follow shortly in hs17).
Reviewed-by: kvn, coleenp, jmasa

Summary: Skip the secondary induction variable handling if it is dead
Reviewed-by: never, kvn

Reviewed-by: kvn
Contributed-by: NGary Benson <gbenson@redhat.com>

Summary: Make OptimizeStringConcat a product VM option(contributed by never)
Reviewed-by: never

Summary: Fixes a race on the dirty card queue completed buffer list between worker thread(s) performing a flush of a deferred store barrier (enqueueing a newly completed buffer) and worker thread(s) in the RSet updating code claiming completed buffers. Removed the routine that removes elements from the completed update buffer queue using a CAS.
Reviewed-by: ysr, tonyp

Summary: Set minimum heap size to min(OldSize + NewSize, MaxHeapSize) in Arguments::set_heap_size().
Reviewed-by: kvn, ysr, tonyp

Summary: It introduces the necessary memory pools for G1.
Reviewed-by: mchung, ysr

Summary: Remove the assert.
Reviewed-by: twisti

Summary: ScavengeALot now causes an incremental (but possibly partially young, in the G1 sense) collection. Some such collections may be abandoned on account of MMU specs. Band-aided a native leak associated with abandoned pauses, as well as an MMU tracker overflow related to frequent scavenge events in the face of a large MMU denominator interval; the latter is protected by a product flag that defaults to false.
Reviewed-by: tonyp

Summary: Protected stats dump with a new develop flag; other than for the dump, reconciled product and non-product behaviour in face of the error.
Reviewed-by: tonyp

6902000: use ShouldNotReachHere() for btos/ctos/stos in TemplateInterpreterGenerator::set_short_entry_points
Summary: set_entry_point is only ever used with the tos states of bytecode templates in templateTable.cpp and none of those use the subword tos states like btos, ctos and stos.
Reviewed-by: kvn

Summary: Added instrumentation and (temporary) assert in non-product mode; clipped the value when found out-of-bounds in product mode. Fix of original issue will follow collection of data from this instrumentation.
Reviewed-by: jcoomes, tonyp

Reviewed-by: kvn, twisti

Reviewed-by: kvn

Reviewed-by: kamg, xlu

Summary: Use CollectorPolicy information instead of MaxNewSize
Reviewed-by: ysr, jcoomes

Summary: The type in the NEW_C_HEAP_ARRRY and FREE_C_HEAP_ARRAY calls in the buffer allocation code was changed from void* to char as the size argument had already been mulitipled by the byte size of an object pointer.
Reviewed-by: ysr, tonyp

Summary: Always call C->get_alias_index(phase->type(address)) during parsing.
Reviewed-by: never

Summary: Move DecodeN code outside the memory nodes only code.
Reviewed-by: never

Summary: Add serviceability support for uint64_t. Flags of unknown type assert in debug builds and are ignored in product builds.
Reviewed-by: never, xlu, mchung, dcubed

Summary: Allow iteration over the shared spaces when using CDS, repealing previous proscription. Deferred further required CDS-related cleanups of perm gen to CR 6897789.
Reviewed-by: phh, jmasa

Reviewed-by: never

Summary: Fix several crashers, remove needless paths for boxed-style bootstrap method call, refactor & simplify APIs for rewriter constantPoolOop, remove sun.dyn.CallSiteImpl
Reviewed-by: kvn

6852078: HSX 14/16 in jdk 5.0: api/javax_management api/org_omg jck tests crashes or make tnameserv crash
Summary: Disable SuperWord optimization for unsafe read/write
Reviewed-by: kvn, phh

Summary: Set narrow_oop_base and narrow_oop_use_implicit_null_checks in Universe::preferred_heap_base().
Reviewed-by: twisti, jcoomes

Summary: Apply modification of existing server heap size ergo to all collectors except CMS.
Reviewed-by: jmasa, ysr, xlu

Summary: Restore old behaviour wrt HeapDumpPath; first dump goes to <file>, <n>th dump goes to <file>.<n-1>, with default value of <file> the same as before.
Reviewed-by: alanb, jcoomes, tonyp

Summary: The fix addresses two memory leaks in G1 code: (1) _evac_failure_scan_stack - a resource object allocated on the C heap was not freed; (2) RSHashTable were linked into deleted list which was only cleared at full GC.
Reviewed-by: tonyp, iveresov

Reviewed-by: tonyp, ysr

Summary: Implement scalar replaced objects debug info dump in SA.
Reviewed-by: twisti

Summary: Fix the shadowing and incorrect macro usages
Reviewed-by: coleenp

Summary: Removed the assert: UseSerialGC is not necessarily always set when serial gc is being used.
Reviewed-by: jcoomes, jmasa, tonyp

Summary: correctly raise exceptions, support safe bitwise "raw" conversions, fix bugs revealed by VerifyMethodHandles, remove dead code, improve debugging support
Reviewed-by: never, twisti

6889757: G1: enable card mark elision for initializing writes from compiled code (ReduceInitialCardMarks)
Summary: Defer the (compiler-elided) card-mark upon a slow-path allocation until after the store  and before the next subsequent safepoint; G1 now answers yes to can_elide_tlab_write_barriers().
Reviewed-by: jcoomes, kvn, never