This reverts commit 7a01e5e2.

This reverts commit ca5fefe8.

Summary: Fix build issues caused by object allocation profiling on Windows/Mac

Test Plan: build Dragonwell 8 successfully on Linux/Windows/Mac

Reviewed-by: zhengxiaolinX, luchsh, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/74

Summary: add support for opto object allocations sampling

Test Plan: test/jfr/event/objectsprofiling/TestOptoObjectAllocationsSampling.java

Reviewers: zhengxiaolinX, luchsh, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/64

Summary:
- add a warning of large array allocation
- port D3674 to dragonwell

Test Plan: test/runtime/memory/TestArrayAllocationWarning.java

Reviewers: 传胜

Differential Revision: https://aone.alibaba-inc.com/code/D851704

Reviewed-by: pliden, jmasa

Summary: Changing copy_allocation_context_stats to return if there are more stats available after the copy.
Reviewed-by: rriggs, jcoomes

Reviewed-by: brutisso, tschatzl

Reviewed-by: brutisso, mgerdin

Reviewed-by: mikael, jmasa, tschatzl

Summary: Dtrace monitoring uses size before mirror size is set.
Reviewed-by: kamg, hseigel

Summary: Keep class in CLD::_klasses list and mirror created for CDS classes if OOM during restore_shareable_info(). This keeps pointers consistent for CMS.
Reviewed-by: ehelin, stefank, jmasa, iklam

Reviewed-by: tschatzl, stefank, jmasa

Reviewed-by: brutisso, jmasa, coleenp

Summary: Add a list of nmethods to the RSet for a region that contain references into the region. Skip scanning the code cache during root scanning and scan the nmethod lists during RSet scanning instead.
Reviewed-by: tschatzl, brutisso, mgerdin, twisti, kvn

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>

Reviewed-by: brutisso, jmasa

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

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

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

Summary: Some minor cleanups
Reviewed-by: tonyp, jwilhelm

Summary: Make sure that MutableNUMASpace::ensure_parsability() only calls CollectedHeap::fill_with_object() with valid sizes and make sure CollectedHeap::filler_array_max_size() returns a value that can be converted to an int without overflow
Reviewed-by: azeemj, jmasa, iveresov

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

Summary: Change variables representing the number of GC workers to uint from int and size_t.  Change the parameter in work(int i) to work(uint worker_id).
Reviewed-by: brutisso, tonyp

Summary: Fixed G1CollectedHeap::is_in, added tests, cleaned up comments and made Space::is_in pure virtual.
Reviewed-by: brutisso, tonyp, jcoomes

Reviewed-by: johnc, brutisso, poonam

Reviewed-by: kvn

Summary: Don't zero new typeArray during runtime call if the allocation is followed by arraycopy into it.
Reviewed-by: twisti

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

Summary: Perform a heap verification after the first phase of G1's full GC using objects' mark words to determine liveness. The third parameter of the heap verification routines, which was used in G1 to determine which marking bitmap to use in liveness calculations, has been changed from a boolean to an enum with values defined for using the mark word, and the 'prev' and 'next' bitmaps.
Reviewed-by: tonyp, ysr

Summary: Implement a more accurate is_scavengable()
Reviewed-by: stefank, jcoomes, ysr

Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

Summary: Associate number of GC workers with the workgang as opposed to the task.
Reviewed-by: johnc, ysr

Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

Summary: Ensure a full GC that clears SoftReferences before throwing an out-of-memory
Reviewed-by: ysr, jcoomes

Summary: Deferred card marks are now flushed during the gc prologue. Parallel[Scavege,OldGC] and SerialGC no longer defer card marks generated by COMPILER2 as a result of ReduceInitialCardMarks. For these cases, introduced a diagnostic option to defer the card marks, only for the purposes of testing and diagnostics. CMS and G1 continue to defer card marks. Potential performance concern related to single-threaded flushing of deferred card marks in the gc prologue will be addressed in the future.
Reviewed-by: never, johnc

6902115: G1:assert(ignore_max_completed||thread->is_Java_thread()||SafepointSynchronize::is_at_safepoint())
Summary: Remove invalid assert and mangle filler objects in TLABs that are being retired.
Reviewed-by: ysr, jmasa

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

Summary: Make a special root-list for those few nmethods which might contain non-perm oops.
Reviewed-by: twisti, kvn, never, jmasa, ysr