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comparison src/share/vm/classfile/javaClasses.hpp @ 132:60b728ec77c1

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6652736: well known classes in system dictionary are inefficiently processed Summary: combine many scalar variables into a single enum-indexed array in SystemDictionary. Reviewed-by: kvn
author jrose
date Tue, 29 Apr 2008 19:45:22 -0700
parents ba764ed4b6f2
children 437d03ea40b1
comparison
equal deleted inserted replaced
131:6e825ad773c6 132:60b728ec77c1
43 43
44 class java_lang_String : AllStatic { 44 class java_lang_String : AllStatic {
45 private: 45 private:
46 enum { 46 enum {
47 hc_value_offset = 0, 47 hc_value_offset = 0,
48 hc_offset_offset = 1, 48 hc_offset_offset = 1
49 hc_count_offset = 2, 49 //hc_count_offset = 2 -- not a word-scaled offset
50 hc_hash_offset = 3 50 //hc_hash_offset = 3 -- not a word-scaled offset
51 }; 51 };
52 52
53 static int value_offset; 53 static int value_offset;
54 static int offset_offset; 54 static int offset_offset;
55 static int count_offset; 55 static int count_offset;
147 static oop create_mirror(KlassHandle k, TRAPS); 147 static oop create_mirror(KlassHandle k, TRAPS);
148 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); 148 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
149 // Conversion 149 // Conversion
150 static klassOop as_klassOop(oop java_class); 150 static klassOop as_klassOop(oop java_class);
151 // Testing 151 // Testing
152 static bool is_instance(oop obj) {
153 return obj != NULL && obj->klass() == SystemDictionary::class_klass();
154 }
152 static bool is_primitive(oop java_class); 155 static bool is_primitive(oop java_class);
153 static BasicType primitive_type(oop java_class); 156 static BasicType primitive_type(oop java_class);
154 static oop primitive_mirror(BasicType t); 157 static oop primitive_mirror(BasicType t);
155 // JVM_NewInstance support 158 // JVM_NewInstance support
156 static methodOop resolved_constructor(oop java_class); 159 static methodOop resolved_constructor(oop java_class);
649 enum { 652 enum {
650 hc_value_offset = 0 653 hc_value_offset = 0
651 }; 654 };
652 static int value_offset; 655 static int value_offset;
653 656
654 static oop initialize_and_allocate(klassOop klass, TRAPS); 657 static oop initialize_and_allocate(BasicType type, TRAPS);
655 public: 658 public:
656 // Allocation. Returns a boxed value, or NULL for invalid type. 659 // Allocation. Returns a boxed value, or NULL for invalid type.
657 static oop create(BasicType type, jvalue* value, TRAPS); 660 static oop create(BasicType type, jvalue* value, TRAPS);
658 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 661 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
659 static BasicType get_value(oop box, jvalue* value); 662 static BasicType get_value(oop box, jvalue* value);
660 static BasicType set_value(oop box, jvalue* value); 663 static BasicType set_value(oop box, jvalue* value);
664 static BasicType basic_type(oop box);
665 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
666 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
661 667
662 static int value_offset_in_bytes() { return value_offset; } 668 static int value_offset_in_bytes() { return value_offset; }
663 669
664 // Debugging 670 // Debugging
665 friend class JavaClasses; 671 friend class JavaClasses;
919 925
920 class JavaClasses : AllStatic { 926 class JavaClasses : AllStatic {
921 private: 927 private:
922 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 928 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
923 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 929 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
930 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
924 public: 931 public:
925 static void compute_hard_coded_offsets(); 932 static void compute_hard_coded_offsets();
926 static void compute_offsets(); 933 static void compute_offsets();
927 static void check_offsets() PRODUCT_RETURN; 934 static void check_offsets() PRODUCT_RETURN;
928 }; 935 };