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src/hotspot/share/memory/memRegion.hpp

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rev 53641 : 8218192: Remove copy constructor for MemRegion
Summary: Remove copy constructor in memRegion.hpp
Reviewed-by:


  42 
  43 class MemRegion {
  44   friend class VMStructs;
  45 private:
  46   HeapWord* _start;
  47   size_t    _word_size;
  48 
  49 public:
  50   MemRegion() : _start(NULL), _word_size(0) {};
  51   MemRegion(HeapWord* start, size_t word_size) :
  52     _start(start), _word_size(word_size) {};
  53   MemRegion(HeapWord* start, HeapWord* end) :
  54     _start(start), _word_size(pointer_delta(end, start)) {
  55     assert(end >= start, "incorrect constructor arguments");
  56   }
  57   MemRegion(MetaWord* start, MetaWord* end) :
  58     _start((HeapWord*)start), _word_size(pointer_delta(end, start)) {
  59     assert(end >= start, "incorrect constructor arguments");
  60   }
  61 
  62   MemRegion(const MemRegion& mr): _start(mr._start), _word_size(mr._word_size) {}
  63 
  64   MemRegion intersection(const MemRegion mr2) const;
  65   // regions must overlap or be adjacent
  66   MemRegion _union(const MemRegion mr2) const;
  67   // minus will fail a guarantee if mr2 is interior to this,
  68   // since there's no way to return 2 disjoint regions.
  69   MemRegion minus(const MemRegion mr2) const;
  70 
  71   HeapWord* start() const { return _start; }
  72   HeapWord* end() const   { return _start + _word_size; }
  73   HeapWord* last() const  { return _start + _word_size - 1; }
  74 
  75   void set_start(HeapWord* start) { _start = start; }
  76   void set_end(HeapWord* end)     { _word_size = pointer_delta(end, _start); }
  77   void set_word_size(size_t word_size) {
  78     _word_size = word_size;
  79   }
  80 
  81   bool contains(const MemRegion mr2) const {
  82     return _start <= mr2._start && end() >= mr2.end();
  83   }




  42 
  43 class MemRegion {
  44   friend class VMStructs;
  45 private:
  46   HeapWord* _start;
  47   size_t    _word_size;
  48 
  49 public:
  50   MemRegion() : _start(NULL), _word_size(0) {};
  51   MemRegion(HeapWord* start, size_t word_size) :
  52     _start(start), _word_size(word_size) {};
  53   MemRegion(HeapWord* start, HeapWord* end) :
  54     _start(start), _word_size(pointer_delta(end, start)) {
  55     assert(end >= start, "incorrect constructor arguments");
  56   }
  57   MemRegion(MetaWord* start, MetaWord* end) :
  58     _start((HeapWord*)start), _word_size(pointer_delta(end, start)) {
  59     assert(end >= start, "incorrect constructor arguments");
  60   }
  61 


  62   MemRegion intersection(const MemRegion mr2) const;
  63   // regions must overlap or be adjacent
  64   MemRegion _union(const MemRegion mr2) const;
  65   // minus will fail a guarantee if mr2 is interior to this,
  66   // since there's no way to return 2 disjoint regions.
  67   MemRegion minus(const MemRegion mr2) const;
  68 
  69   HeapWord* start() const { return _start; }
  70   HeapWord* end() const   { return _start + _word_size; }
  71   HeapWord* last() const  { return _start + _word_size - 1; }
  72 
  73   void set_start(HeapWord* start) { _start = start; }
  74   void set_end(HeapWord* end)     { _word_size = pointer_delta(end, _start); }
  75   void set_word_size(size_t word_size) {
  76     _word_size = word_size;
  77   }
  78 
  79   bool contains(const MemRegion mr2) const {
  80     return _start <= mr2._start && end() >= mr2.end();
  81   }


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