Reviewed-by: coleenp, zgu, hseigel

Reviewed-by: brutisso, jmasa

Summary: Use GC_locker::is_active_and_needs_gc() instead of GC_locker::is_active() for providing information about the reason of heap expansion.
Reviewed-by: jmasa, johnc

Summary: Keep a counter of how many times we were stalled by the GC locker, add a diagnostic flag which sets the limit.
Reviewed-by: brutisso, ehelin, johnc

Summary: Use the correct collector to retrieve accumulated gen1 trace time
Reviewed-by: johnc, jmasa

Reviewed-by: johnc

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

Reviewed-by: johnc, ysr

Summary: Remove bit-rotten ValidateMarkSweep functionality and flag.
Reviewed-by: johnc, jmasa
Contributed-by: Ntamao <tao.mao@oracle.com>

Reviewed-by: stefank, coleenp
Contributed-by: volker.simonis@gmail.com

Summary: Pass down a closure during root scanning to keep the class of the method alive.
Reviewed-by: coleenp, jcoomes

Summary: Restore non-silent output of heap verification.
Reviewed-by: ysr, brutisso, jmasa

Summary: Update copyright year to 2012 for relevant files
Reviewed-by: dholmes, coleenp

Summary: Change the flags and variables related to tenuring threshold to be unsigned
Reviewed-by: jmasa, johnc

Reviewed-by: johnc

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

Summary: Removed the unused keep_alive parameter
Reviewed-by: stefank, dholmes, kamg, coleenp

Reviewed-by: stefank, coleenp, kvn

Summary: Simple renaming to be consistent with instanceKlass->InstanceKlass renaming
Reviewed-by: stefank, jmasa

Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: Njmasa &lt;jon.masamitsu@oracle.com&gt;, stefank &lt;stefan.karlsson@oracle.com&gt;, mgerdin &lt;mikael.gerdin@oracle.com&gt;, never <tom.rodriguez@oracle.com>

7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain

Reviewed-by: mgerdin, johnc

Summary: use load_decode_heap_oop instead of load_decode_heap_oop_not_null
Reviewed-by: tonyp, brutisso

Summary: removed oop_verify_old_oop and allow_dirty. Also reviewed by: alexlamsl@gmail.com
Reviewed-by: jmasa, jwilhelm

Reviewed-by: jcoomes, brutisso

Summary: in some cases, allocate from the old gen before doing a full gc
Reviewed-by: stefank, jmasa

Reviewed-by: stefank, jmasa

Reviewed-by: kvn, jrose, kevinw, brutisso, twisti, jmasa

Summary: Prunes scavenge roots in code list every young GC, promote objects directly pointed by the code immediately
Reviewed-by: johnc, jcoomes

Summary: Replaces calls to os::javaTimeMillis(), which does not (and cannot) guarantee monotonicity, in GC code to an equivalent expression that uses os::javaTimeNanos(). os::javaTimeNanos is guaranteed monotonically non-decreasing if the underlying platform provides a monotonic time source. Changes in OS files are to make use of the newly defined constants in globalDefinitions.hpp.
Reviewed-by: dholmes, ysr

Summary: Provoke a GC for a metadata allocation failure.
Reviewed-by: johnc, iveresov

Summary: Remove obsolete code.
Reviewed-by: brutisso, ysr, jcoomes

Reviewed-by: johnc, brutisso, poonam

Reviewed-by: kvn, twisti, jrose
Contributed-by: NKurt Miller &lt;kurt@intricatesoftware.com&gt;, Greg Lewis &lt;glewis@eyesbeyond.com&gt;, Jung-uk Kim &lt;jkim@freebsd.org&gt;, Christos Zoulas &lt;christos@zoulas.com&gt;, Landon Fuller &lt;landonf@plausible.coop&gt;, The FreeBSD Foundation &lt;board@freebsdfoundation.org&gt;, Michael Franz &lt;mvfranz@gmail.com&gt;, Roger Hoover &lt;rhoover@apple.com&gt;, Alexander Strange <astrange@apple.com>

Summary: Pass the same object size value to both allocate and unallocate_object
Reviewed-by: ysr, brutisso

Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.
Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp

Summary: Remove the sentinelRef and let the last Reference in a discovered chain point back to itself.
Reviewed-by: ysr, jmasa

Summary: Select number of GC threads dynamically based on heap usage and number of Java threads
Reviewed-by: johnc, ysr, jcoomes

Summary: Interpret MarkSweepAlwaysCompactCount < 1 as never do full compaction
Reviewed-by: ysr, tonyp, jmasa, johnc

Summary: Remove two unused parameters from the mem_allocate() method and update its uses accordingly.
Reviewed-by: stefank, johnc