37
38 class InstanceKlassFlags {
39 friend class VMStructs;
40 friend class JVMCIVMStructs;
41
42 #define IK_FLAGS_DO(flag) \
43 flag(rewritten , 1 << 0) /* methods rewritten. */ \
44 flag(has_nonstatic_fields , 1 << 1) /* for sizing with UseCompressedOops */ \
45 flag(should_verify_class , 1 << 2) /* allow caching of preverification */ \
46 flag(is_contended , 1 << 3) /* marked with contended annotation */ \
47 flag(has_nonstatic_concrete_methods , 1 << 4) /* class/superclass/implemented interfaces has non-static, concrete methods */ \
48 flag(declares_nonstatic_concrete_methods, 1 << 5) /* directly declares non-static, concrete methods */ \
49 flag(shared_loading_failed , 1 << 6) /* class has been loaded from shared archive */ \
50 flag(defined_by_boot_loader , 1 << 7) /* defining class loader is boot class loader */ \
51 flag(defined_by_platform_loader , 1 << 8) /* defining class loader is platform class loader */ \
52 flag(defined_by_app_loader , 1 << 9) /* defining class loader is app class loader */ \
53 flag(has_contended_annotations , 1 << 10) /* has @Contended annotation */ \
54 flag(has_localvariable_table , 1 << 11) /* has localvariable information */ \
55 flag(has_miranda_methods , 1 << 12) /* True if this class has miranda methods in it's vtable */ \
56 flag(has_final_method , 1 << 13) /* True if klass has final method */ \
57 flag(trust_final_fields , 1 << 14) /* All instance final fields in this class should be trusted */ \
58 /* end of list */
59
60 #define IK_FLAGS_ENUM_NAME(name, value) _misc_##name = value,
61 enum {
62 IK_FLAGS_DO(IK_FLAGS_ENUM_NAME)
63 };
64 #undef IK_FLAGS_ENUM_NAME
65
66 #define IK_STATUS_DO(status) \
67 status(is_being_redefined , 1 << 0) /* True if the klass is being redefined */ \
68 status(has_resolved_methods , 1 << 1) /* True if the klass has resolved MethodHandle methods */ \
69 status(has_been_redefined , 1 << 2) /* class has been redefined */ \
70 status(is_scratch_class , 1 << 3) /* class is the redefined scratch class */ \
71 status(is_marked_dependent , 1 << 4) /* class is the redefined scratch class */ \
72 status(has_init_deps_processed , 1 << 5) /* all init dependencies are processed */ \
73 /* end of list */
74
75 #define IK_STATUS_ENUM_NAME(name, value) _misc_##name = value,
76 enum {
77 IK_STATUS_DO(IK_STATUS_ENUM_NAME)
78 };
79 #undef IK_STATUS_ENUM_NAME
80
81 u2 builtin_loader_type_bits() const {
82 return _misc_defined_by_boot_loader|_misc_defined_by_platform_loader|_misc_defined_by_app_loader;
83 }
84
85 // These flags are write-once before the class is published and then read-only so don't require atomic updates.
86 u2 _flags;
87
88 // These flags are written during execution so require atomic stores
89 u1 _status;
90
91 public:
92
93 InstanceKlassFlags() : _flags(0), _status(0) {}
94
95 // Create getters and setters for the flag values.
96 #define IK_FLAGS_GET_SET(name, ignore) \
97 bool name() const { return (_flags & _misc_##name) != 0; } \
98 void set_##name(bool b) { \
99 assert_is_safe(name()); \
100 if (b) _flags |= _misc_##name; \
101 }
102 IK_FLAGS_DO(IK_FLAGS_GET_SET)
103 #undef IK_FLAGS_GET_SET
104
105 bool defined_by_other_loaders() const {
106 return (_flags & builtin_loader_type_bits()) == 0;
107 }
108
109 void set_class_loader_type(const ClassLoaderData* cld);
110
111 void assert_is_safe(bool set) NOT_DEBUG_RETURN;
112
113 // Create getters and setters for the status values.
114 #define IK_STATUS_GET_SET(name, ignore) \
115 bool name() const { return (_status & _misc_##name) != 0; } \
116 void set_##name(bool b) { \
117 if (b) { \
118 atomic_set_bits(_misc_##name); \
119 } else { \
120 atomic_clear_bits(_misc_##name); \
121 } \
122 }
123 IK_STATUS_DO(IK_STATUS_GET_SET)
124 #undef IK_STATUS_GET_SET
125
126 void atomic_set_bits(u1 bits) { AtomicAccess::fetch_then_or(&_status, bits); }
127 void atomic_clear_bits(u1 bits) { AtomicAccess::fetch_then_and(&_status, (u1)(~bits)); }
128 void print_on(outputStream* st) const;
129 };
130
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37
38 class InstanceKlassFlags {
39 friend class VMStructs;
40 friend class JVMCIVMStructs;
41
42 #define IK_FLAGS_DO(flag) \
43 flag(rewritten , 1 << 0) /* methods rewritten. */ \
44 flag(has_nonstatic_fields , 1 << 1) /* for sizing with UseCompressedOops */ \
45 flag(should_verify_class , 1 << 2) /* allow caching of preverification */ \
46 flag(is_contended , 1 << 3) /* marked with contended annotation */ \
47 flag(has_nonstatic_concrete_methods , 1 << 4) /* class/superclass/implemented interfaces has non-static, concrete methods */ \
48 flag(declares_nonstatic_concrete_methods, 1 << 5) /* directly declares non-static, concrete methods */ \
49 flag(shared_loading_failed , 1 << 6) /* class has been loaded from shared archive */ \
50 flag(defined_by_boot_loader , 1 << 7) /* defining class loader is boot class loader */ \
51 flag(defined_by_platform_loader , 1 << 8) /* defining class loader is platform class loader */ \
52 flag(defined_by_app_loader , 1 << 9) /* defining class loader is app class loader */ \
53 flag(has_contended_annotations , 1 << 10) /* has @Contended annotation */ \
54 flag(has_localvariable_table , 1 << 11) /* has localvariable information */ \
55 flag(has_miranda_methods , 1 << 12) /* True if this class has miranda methods in it's vtable */ \
56 flag(has_final_method , 1 << 13) /* True if klass has final method */ \
57 flag(has_inlined_fields , 1 << 14) /* has inlined fields and related embedded section is not empty */ \
58 flag(is_empty_inline_type , 1 << 15) /* empty inline type (*) */ \
59 flag(is_naturally_atomic , 1 << 16) /* loaded/stored in one instruction*/ \
60 flag(must_be_atomic , 1 << 17) /* doesn't allow tearing */ \
61 flag(has_loosely_consistent_annotation , 1 << 18) /* the class has the LooselyConsistentValue annotation WARNING: it doesn't automatically mean that the class allows tearing */ \
62 flag(has_strict_static_fields , 1 << 19) /* True if strict static fields declared */ \
63 flag(trust_final_fields , 1 << 20) /* All instance final fields in this class should be trusted */ \
64 /* end of list */
65
66 /* (*) An inline type is considered empty if it contains no non-static fields or
67 if it contains only empty inline fields. Note that JITs have a slightly different
68 definition: empty inline fields must be flat otherwise the container won't
69 be considered empty */
70
71 #define IK_FLAGS_ENUM_NAME(name, value) _misc_##name = value,
72 enum {
73 IK_FLAGS_DO(IK_FLAGS_ENUM_NAME)
74 };
75 #undef IK_FLAGS_ENUM_NAME
76
77 #define IK_STATUS_DO(status) \
78 status(is_being_redefined , 1 << 0) /* True if the klass is being redefined */ \
79 status(has_resolved_methods , 1 << 1) /* True if the klass has resolved MethodHandle methods */ \
80 status(has_been_redefined , 1 << 2) /* class has been redefined */ \
81 status(is_scratch_class , 1 << 3) /* class is the redefined scratch class */ \
82 status(is_marked_dependent , 1 << 4) /* class is the redefined scratch class */ \
83 status(has_init_deps_processed , 1 << 5) /* all init dependencies are processed */ \
84 /* end of list */
85
86 #define IK_STATUS_ENUM_NAME(name, value) _misc_##name = value,
87 enum {
88 IK_STATUS_DO(IK_STATUS_ENUM_NAME)
89 };
90 #undef IK_STATUS_ENUM_NAME
91
92 u2 builtin_loader_type_bits() const {
93 return _misc_defined_by_boot_loader|_misc_defined_by_platform_loader|_misc_defined_by_app_loader;
94 }
95
96 // These flags are write-once before the class is published and then read-only so don't require atomic updates.
97 u4 _flags;
98
99 // These flags are written during execution so require atomic stores
100 u1 _status;
101
102 public:
103
104 InstanceKlassFlags() : _flags(0), _status(0) {}
105
106 // Create getters and setters for the flag values.
107 #define IK_FLAGS_GET_SET(name, ignore) \
108 bool name() const { return (_flags & _misc_##name) != 0; } \
109 void set_##name(bool b) { \
110 assert_is_safe(name()); \
111 if (b) _flags |= _misc_##name; \
112 }
113 IK_FLAGS_DO(IK_FLAGS_GET_SET)
114 #undef IK_FLAGS_GET_SET
115
116 bool defined_by_other_loaders() const {
117 return (_flags & builtin_loader_type_bits()) == 0;
118 }
119
120 void set_class_loader_type(const ClassLoaderData* cld);
121
122
123 u4 flags() const { return _flags; }
124
125 static u4 is_empty_inline_type_value() {
126 return _misc_is_empty_inline_type;
127 }
128
129 void assert_is_safe(bool set) NOT_DEBUG_RETURN;
130
131 // Create getters and setters for the status values.
132 #define IK_STATUS_GET_SET(name, ignore) \
133 bool name() const { return (_status & _misc_##name) != 0; } \
134 void set_##name(bool b) { \
135 if (b) { \
136 atomic_set_bits(_misc_##name); \
137 } else { \
138 atomic_clear_bits(_misc_##name); \
139 } \
140 }
141 IK_STATUS_DO(IK_STATUS_GET_SET)
142 #undef IK_STATUS_GET_SET
143
144 void atomic_set_bits(u1 bits) { AtomicAccess::fetch_then_or(&_status, bits); }
145 void atomic_clear_bits(u1 bits) { AtomicAccess::fetch_then_and(&_status, (u1)(~bits)); }
146 void print_on(outputStream* st) const;
147 };
148
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