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comparison src/share/vm/oops/instanceKlass.hpp @ 974:26b774d693aa

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Merge
author acorn
date Wed, 16 Sep 2009 09:10:57 -0400
parents ad6585fd4087 9eebd3ac74cf
children 83c29a26f67c
comparison
equal deleted inserted replaced
973:ad6585fd4087 974:26b774d693aa
69 // where oops are located in instances of this klass. 69 // where oops are located in instances of this klass.
70 70
71 71
72 // forward declaration for class -- see below for definition 72 // forward declaration for class -- see below for definition
73 class SuperTypeClosure; 73 class SuperTypeClosure;
74 class OopMapBlock;
75 class JNIid; 74 class JNIid;
76 class jniIdMapBase; 75 class jniIdMapBase;
77 class BreakpointInfo; 76 class BreakpointInfo;
78 class fieldDescriptor; 77 class fieldDescriptor;
79 class DepChange; 78 class DepChange;
96 public: 95 public:
97 FieldPrinter(outputStream* st, oop obj = NULL) : _obj(obj), _st(st) {} 96 FieldPrinter(outputStream* st, oop obj = NULL) : _obj(obj), _st(st) {}
98 void do_field(fieldDescriptor* fd); 97 void do_field(fieldDescriptor* fd);
99 }; 98 };
100 #endif // !PRODUCT 99 #endif // !PRODUCT
100
101 // ValueObjs embedded in klass. Describes where oops are located in instances of
102 // this klass.
103 class OopMapBlock VALUE_OBJ_CLASS_SPEC {
104 public:
105 // Byte offset of the first oop mapped by this block.
106 int offset() const { return _offset; }
107 void set_offset(int offset) { _offset = offset; }
108
109 // Number of oops in this block.
110 uint count() const { return _count; }
111 void set_count(uint count) { _count = count; }
112
113 // sizeof(OopMapBlock) in HeapWords.
114 static const int size_in_words() {
115 return align_size_up(int(sizeof(OopMapBlock)), HeapWordSize) >>
116 LogHeapWordSize;
117 }
118
119 private:
120 int _offset;
121 uint _count;
122 };
101 123
102 class instanceKlass: public Klass { 124 class instanceKlass: public Klass {
103 friend class VMStructs; 125 friend class VMStructs;
104 public: 126 public:
105 // See "The Java Virtual Machine Specification" section 2.16.2-5 for a detailed description 127 // See "The Java Virtual Machine Specification" section 2.16.2-5 for a detailed description
198 // Number of heapOopSize words used by non-static fields in this klass 220 // Number of heapOopSize words used by non-static fields in this klass
199 // (including inherited fields but after header_size()). 221 // (including inherited fields but after header_size()).
200 int _nonstatic_field_size; 222 int _nonstatic_field_size;
201 int _static_field_size; // number words used by static fields (oop and non-oop) in this klass 223 int _static_field_size; // number words used by static fields (oop and non-oop) in this klass
202 int _static_oop_field_size;// number of static oop fields in this klass 224 int _static_oop_field_size;// number of static oop fields in this klass
203 int _nonstatic_oop_map_size;// number of nonstatic oop-map blocks allocated at end of this klass 225 int _nonstatic_oop_map_size;// size in words of nonstatic oop map blocks
204 int _class_flags; // internal class state flags 226 int _class_flags; // internal class state flags
205 u2 _minor_version; // minor version number of class file 227 u2 _minor_version; // minor version number of class file
206 u2 _major_version; // major version number of class file 228 u2 _major_version; // major version number of class file
207 ClassState _init_state; // state of class 229 ClassState _init_state; // state of class
208 Thread* _init_thread; // Pointer to current thread doing initialization (to handle recusive initialization) 230 Thread* _init_thread; // Pointer to current thread doing initialization (to handle recusive initialization)
434 // source debug extension 456 // source debug extension
435 symbolOop source_debug_extension() const { return _source_debug_extension; } 457 symbolOop source_debug_extension() const { return _source_debug_extension; }
436 void set_source_debug_extension(symbolOop n){ oop_store_without_check((oop*) &_source_debug_extension, (oop) n); } 458 void set_source_debug_extension(symbolOop n){ oop_store_without_check((oop*) &_source_debug_extension, (oop) n); }
437 459
438 // nonstatic oop-map blocks 460 // nonstatic oop-map blocks
439 int nonstatic_oop_map_size() const { return _nonstatic_oop_map_size; } 461 static int nonstatic_oop_map_size(unsigned int oop_map_count) {
440 void set_nonstatic_oop_map_size(int size) { _nonstatic_oop_map_size = size; } 462 return oop_map_count * OopMapBlock::size_in_words();
463 }
464 unsigned int nonstatic_oop_map_count() const {
465 return _nonstatic_oop_map_size / OopMapBlock::size_in_words();
466 }
467 int nonstatic_oop_map_size() const { return _nonstatic_oop_map_size; }
468 void set_nonstatic_oop_map_size(int words) {
469 _nonstatic_oop_map_size = words;
470 }
441 471
442 // RedefineClasses() support for previous versions: 472 // RedefineClasses() support for previous versions:
443 void add_previous_version(instanceKlassHandle ikh, BitMap *emcp_methods, 473 void add_previous_version(instanceKlassHandle ikh, BitMap *emcp_methods,
444 int emcp_method_count); 474 int emcp_method_count);
445 bool has_previous_version() const; 475 bool has_previous_version() const;
850 return _idnum_allocated_count++; 880 return _idnum_allocated_count++;
851 } 881 }
852 } 882 }
853 883
854 884
855 // ValueObjs embedded in klass. Describes where oops are located in instances of this klass.
856
857 class OopMapBlock VALUE_OBJ_CLASS_SPEC {
858 private:
859 jushort _offset; // Offset of first oop in oop-map block
860 jushort _length; // Length of oop-map block
861 public:
862 // Accessors
863 jushort offset() const { return _offset; }
864 void set_offset(jushort offset) { _offset = offset; }
865
866 jushort length() const { return _length; }
867 void set_length(jushort length) { _length = length; }
868 };
869
870 /* JNIid class for jfieldIDs only */ 885 /* JNIid class for jfieldIDs only */
871 class JNIid: public CHeapObj { 886 class JNIid: public CHeapObj {
872 friend class VMStructs; 887 friend class VMStructs;
873 private: 888 private:
874 klassOop _holder; 889 klassOop _holder;