src/hotspot/share/gc/g1/heapRegionType.hpp

rev 51652 : Added support for eager mixed collection of evacuation failure regions
rev 52017 : All changes for G1 GC moved from 'combined' repo folder
rev 52487 : Worked on comments from Sangheon, Stefan

*** 72,82 ****
--- 72,84 ----
      PinnedMask            = 8,
      StartsHumongousTag    = HumongousMask | PinnedMask,
      ContinuesHumongousTag = HumongousMask | PinnedMask + 1,
  
      OldMask               = 16,
+     PreMatureOldMask      = OldMask + 1,
      OldTag                = OldMask,
+     PreMatureOldTag       = PreMatureOldMask,
  
      // Archive regions are regions with immutable content (i.e. not reclaimed, and
      // not allocated into during regular operation). They differ in the kind of references
      // allowed for the contained objects:
      // - Closed archive regions form a separate self-contained (closed) object graph
*** 135,144 ****
--- 137,148 ----
    bool is_closed_archive() const { return get() == ClosedArchiveTag; }
  
    // is_old regions may or may not also be pinned
    bool is_old() const { return (get() & OldMask) != 0; }
  
+   bool is_premature_old() const { return get() == PreMatureOldTag; }
+ 
    bool is_old_or_humongous() const { return (get() & (OldMask | HumongousMask)) != 0; }
  
    bool is_old_or_humongous_or_archive() const { return (get() & (OldMask | HumongousMask | ArchiveMask)) != 0; }
  
    // is_pinned regions may be archive or humongous
*** 155,164 ****
--- 159,170 ----
    void set_starts_humongous()    { set_from(StartsHumongousTag,    FreeTag); }
    void set_continues_humongous() { set_from(ContinuesHumongousTag, FreeTag); }
  
    void set_old() { set(OldTag); }
  
+   void set_premature_old() { set(PreMatureOldTag); }
+ 
    // Change the current region type to be of an old region type if not already done so.
    // Returns whether the region type has been changed or not.
    bool relabel_as_old() {
      //assert(!is_free(), "Should not try to move Free region");
      assert(!is_humongous(), "Should not try to move Humongous region");