src/share/vm/gc_implementation/g1/g1Allocator.hpp

rev 7471 : 8060025: Object copy time regressions after JDK-8031323 and JDK-8057536
Summary: Evaluate and improve object copy time by micro-optimizations and splitting out slow and fast paths aggressively.
Reviewed-by:
Contributed-by: Tony Printezis <tprintezis@twitter.com>, Thomas Schatzl <thomas.schatzl@oracle.com>
rev 7472 : [mq]: 8060025-mikael-review1

*** 25,57 ****
  #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCATOR_HPP
  #define SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCATOR_HPP
  
  #include "gc_implementation/g1/g1AllocationContext.hpp"
  #include "gc_implementation/g1/g1AllocRegion.hpp"
  #include "gc_implementation/shared/parGCAllocBuffer.hpp"
  
- typedef int8_t in_cset_state_t;
- 
- // Helper class used to examine in_cset_t values.
- class InCSetState : AllStatic {
- public:
-   enum {
-     // Values <0 mean the region is a humongous region.
-     NotInCSet    = 0,     // The region is not in the collection set.
-     Young        = 1,     // The region is in the collection set and a young region.
-     Old          = 2,     // The region is in the collection set and an old region.
-     Num
-   };
- 
-   static in_cset_state_t humongous() { return -1; }
- 
-   static bool is_not_in_cset(in_cset_state_t state) { return state == NotInCSet; }
-   static bool is_in_cset_or_humongous(in_cset_state_t state) { return state != NotInCSet; }
-   static bool is_in_cset(in_cset_state_t state) { return state > NotInCSet; }
-   static bool is_humongous(in_cset_state_t state) { return state < NotInCSet; }
- };
- 
  // Base class for G1 allocators.
  class G1Allocator : public CHeapObj<mtGC> {
    friend class VMStructs;
  protected:
    G1CollectedHeap* _g1h;
--- 25,37 ----
  #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCATOR_HPP
  #define SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCATOR_HPP
  
  #include "gc_implementation/g1/g1AllocationContext.hpp"
  #include "gc_implementation/g1/g1AllocRegion.hpp"
+ #include "gc_implementation/g1/g1InCSetState.hpp"
  #include "gc_implementation/shared/parGCAllocBuffer.hpp"
  
  // Base class for G1 allocators.
  class G1Allocator : public CHeapObj<mtGC> {
    friend class VMStructs;
  protected:
    G1CollectedHeap* _g1h;