Summary: Catch missing-because-illegal case for itable entries and use an exception-throwing method instead of null.
Reviewed-by: acorn, jrose, coleenp

7057939: jmap shows MaxNewSize=4GB when Java is using parallel collector
Summary: Major cleanup of the collectorpolicy classes
Reviewed-by: tschatzl, jcoomes

Summary: Allocate compressed class space at end of Java heap.  For small heap sizes, without CDS, save some space so compressed classes can have the same favorable compression as oops
Reviewed-by: stefank, hseigel, goetz

8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
Summary: Incorporate chunk size when seeing if OutOfMemoryError was caused by Metaspace or Compressed class space.
Reviewed-by: stefank, coleenp

Summary: Cleanup related to the NewSize and MaxNewSize bugs
Reviewed-by: tschatzl, jcoomes, ehelin

8024396: VM crashing with assert(!UseLargePages || UseParallelOldGC || use_large_pages) failed: Wrong alignment to use large pages
Summary: Loosen wrong assert for UseParallelOldGC to UseParallelGC
Reviewed-by: stefank, brutisso

Reviewed-by: kvn, coleenp

Summary: Use conservative assumptions of required alignment for the various garbage collector components into account when determining the maximum heap size that supports compressed oops. Using this conservative value avoids several circular dependencies in the calculation.
Reviewed-by: stefank, dholmes

Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso

8016729: ObjectAlignmentInBytes=16 now forces the use of heap based compressed oops
8005933: The -Xshare:auto option is ignored for -server
Summary: Move klass metaspace above the heap and support CDS with compressed klass ptrs.
Reviewed-by: coleenp, kvn, mgerdin, tschatzl, stefank

Summary: ActiveMethodOopsCache was used to keep track of old versions of some methods that are cached in Universe but is buggy with permgen removal and not needed anymore
Reviewed-by: sspitsyn, dcubed, mseledtsov

Reviewed-by: coleenp, mgerdin, hseigel

Reviewed-by: mgerdin, coleenp, hseigel, jmasa, ctornqvi

Summary: Remove -Xaprof and Klass::_alloc_count & ArrayKlass::_alloc_size.
Reviewed-by: stefank, coleenp

8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
Summary: Allocate medium chunks for class metaspace when class loader has lots of classes
Reviewed-by: mgerdin, jmasa

Reviewed-by: jmasa, mgerdin

Reviewed-by: dholmes, coleenp
Contributed-by: jeremymanson@google.com, calvin.cheung@oracle.com

Reviewed-by: acorn, coleenp, sla
Contributed-by: NKaren Kinnear &lt;karen.kinnear@oracle.com&gt;, Bengt Rutisson &lt;bengt.rutisson@oracle.com&gt;, Calvin Cheung &lt;calvin.cheung@oracle.com&gt;, Erik Gahlin &lt;erik.gahlin@oracle.com&gt;, Erik Helin &lt;erik.helin@oracle.com&gt;, Jesper Wilhelmsson &lt;jesper.wilhelmsson@oracle.com&gt;, Keith McGuigan &lt;keith.mcguigan@oracle.com&gt;, Mattias Tobiasson &lt;mattias.tobiasson@oracle.com&gt;, Markus Gronlund &lt;markus.gronlund@oracle.com&gt;, Mikael Auno &lt;mikael.auno@oracle.com&gt;, Nils Eliasson &lt;nils.eliasson@oracle.com&gt;, Nils Loodin &lt;nils.loodin@oracle.com&gt;, Rickard Backman &lt;rickard.backman@oracle.com&gt;, Staffan Larsen &lt;staffan.larsen@oracle.com&gt;, Stefan Karlsson &lt;stefan.karlsson@oracle.com&gt;, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>

Summary: Correct the wrong print format in error message for VM cannot allocate the requested heap; and clean up the error message call in check_alignment()
Reviewed-by: brutisso, tschatzl
Contributed-by: Ntamao <tao.mao@oracle.com>

Summary: With NPG, const KlassOop klass which is in fact a definition converted to Klass* const, which is not the original intention. The right usage is converting them to const Klass*.
Reviewed-by: coleenp, kvn
Contributed-by: yumin.qi@oracle.com

Reviewed-by: johnc, brutisso

Reviewed-by: acorn, hawtin

Summary: Add the -Wunused-function flag and remove a number of unused functions.
Reviewed-by: dholmes, coleenp, kvn

Reviewed-by: mgerdin, stefank

Summary: Some parts of the G1 heap can only be walked during a safepoint. Skip verifying these parts of the heap when verifying during JVM startup.
Reviewed-by: brutisso, tschatzl

Reviewed-by: jmasa, stefank

Summary: Take the initial heap size into account when checking the heap size for compressed oops
Reviewed-by: jmasa, kvn, hseigel, ctornqvi

8000968: NPG: UseCompressedKlassPointers asserts with ObjectAlignmentInBytes for > 32G CompressedOops
Summary: Pick a base that works for both CompressedOpps alignment and CompressedKlassPtrs alignment.
Reviewed-by: kvn, roland

Summary: Rename INCLUDE_ALTERNATE_GCS to INCLUDE_ALL_GCS and replace SERIALGC with INCLUDE_ALL_GCS.
Reviewed-by: coleenp, stefank

Summary: Define jlong as long on all LP64 platforms and add JLONG_FORMAT macro.
Reviewed-by: dholmes, coleenp, mikael, kvn

Summary: Add ClassLoaderData object for each anonymous class with metaspaces to allocate in.
Reviewed-by: twisti, jrose, stefank

Summary: Make metaspace::contains be lock free and used to see if something is in metaspace, also compare Method* with vtbl pointer.
Reviewed-by: dholmes, sspitsyn, dcubed, jmasa

Reviewed-by: dholmes, rbackman, coleenp

Summary: Remove function Klass::cast() and calls to it.
Reviewed-by: dholmes, coleenp

Summary: Reduce the amount of calls to ChunkManager verification code
Reviewed-by: jmasa, coleenp

Summary: Change makefiles so that targets and parameters can be overridden by alternate makefiles.
Reviewed-by: dholmes, coleenp

Summary: support of compress class pointers in the compilers.
Reviewed-by: kvn, twisti

Summary: Capitalize these metadata types (and objArrayKlass)
Reviewed-by: stefank, twisti, kvn

Summary: restore java/lang/ClassLoader.addClass() upcall
Reviewed-by: sspitsyn, dcubed, jmasa

7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
Summary: Don't allocate huge class metaspace size by default on x64
Reviewed-by: stefank, jmasa, kvn