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 }
82 bool contains(const void* addr) const {
83 return addr >= (void*)_start && addr < (void*)end();
84 }
85 bool equals(const MemRegion mr2) const {
86 // first disjunct since we do not have a canonical empty set
87 return ((is_empty() && mr2.is_empty()) ||
88 (start() == mr2.start() && end() == mr2.end()));
89 }
90
91 size_t byte_size() const { return _word_size * sizeof(HeapWord); }
92 size_t word_size() const { return _word_size; }
93
94 bool is_empty() const { return word_size() == 0; }
95 void* operator new(size_t size) throw();
96 void* operator new [](size_t size) throw();
97 void operator delete(void* p);
98 void operator delete [](void* p);
99 };
100
101 // For iteration over MemRegion's.
102
103 class MemRegionClosure : public StackObj {
104 public:
105 virtual void do_MemRegion(MemRegion mr) = 0;
106 };
107
108 // A ResourceObj version of MemRegionClosure
109
110 class MemRegionClosureRO: public MemRegionClosure {
111 public:
112 void* operator new(size_t size, ResourceObj::allocation_type type, MEMFLAGS flags) throw() {
113 return ResourceObj::operator new(size, type, flags);
114 }
115 void* operator new(size_t size, Arena *arena) throw() {
116 return ResourceObj::operator new(size, arena);
117 }
118 void* operator new(size_t size) throw() {
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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 }
82 bool contains(const void* addr) const {
83 return addr >= (void*)_start && addr < (void*)end();
84 }
85 bool equals(const MemRegion mr2) const {
86 // first disjunct since we do not have a canonical empty set
87 return ((is_empty() && mr2.is_empty()) ||
88 (start() == mr2.start() && end() == mr2.end()));
89 }
90
91 size_t byte_size() const { return _word_size * sizeof(HeapWord); }
92 size_t word_size() const { return _word_size; }
93
94 bool is_empty() const { return word_size() == 0; }
95 };
96
97 // For iteration over MemRegion's.
98
99 class MemRegionClosure : public StackObj {
100 public:
101 virtual void do_MemRegion(MemRegion mr) = 0;
102 };
103
104 // A ResourceObj version of MemRegionClosure
105
106 class MemRegionClosureRO: public MemRegionClosure {
107 public:
108 void* operator new(size_t size, ResourceObj::allocation_type type, MEMFLAGS flags) throw() {
109 return ResourceObj::operator new(size, type, flags);
110 }
111 void* operator new(size_t size, Arena *arena) throw() {
112 return ResourceObj::operator new(size, arena);
113 }
114 void* operator new(size_t size) throw() {
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