81 if (resolved_klass->is_objArray_klass()) {
82 // Find the element klass, if this is an array.
83 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
84 }
85 if (resolved_klass->is_instance_klass()) {
86 Reflection::VerifyClassAccessResults result =
87 Reflection::verify_class_access(accessing_klass, InstanceKlass::cast(resolved_klass), true);
88 return result == Reflection::ACCESS_OK;
89 }
90 return true;
91 }
92
93 // ------------------------------------------------------------------
94 Klass* JVMCIEnv::get_klass_by_name_impl(Klass* accessing_klass,
95 const constantPoolHandle& cpool,
96 Symbol* sym,
97 bool require_local) {
98 JVMCI_EXCEPTION_CONTEXT;
99
100 // Now we need to check the SystemDictionary
101 if (sym->byte_at(0) == 'L' &&
102 sym->byte_at(sym->utf8_length()-1) == ';') {
103 // This is a name from a signature. Strip off the trimmings.
104 // Call recursive to keep scope of strippedsym.
105 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
106 sym->utf8_length()-2,
107 CHECK_NULL);
108 return get_klass_by_name_impl(accessing_klass, cpool, strippedsym, require_local);
109 }
110
111 Handle loader(THREAD, (oop)NULL);
112 Handle domain(THREAD, (oop)NULL);
113 if (accessing_klass != NULL) {
114 loader = Handle(THREAD, accessing_klass->class_loader());
115 domain = Handle(THREAD, accessing_klass->protection_domain());
116 }
117
118 Klass* found_klass = NULL;
119 {
120 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
121 MutexLocker ml(Compile_lock);
122 if (!require_local) {
123 found_klass = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, CHECK_NULL);
124 } else {
125 found_klass = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, CHECK_NULL);
126 }
127 }
128
129 // If we fail to find an array klass, look again for its element type.
130 // The element type may be available either locally or via constraints.
131 // In either case, if we can find the element type in the system dictionary,
132 // we must build an array type around it. The CI requires array klasses
133 // to be loaded if their element klasses are loaded, except when memory
134 // is exhausted.
135 if (sym->byte_at(0) == '[' &&
136 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
137 // We have an unloaded array.
138 // Build it on the fly if the element class exists.
139 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
140 sym->utf8_length()-1,
141 CHECK_NULL);
142
143 // Get element Klass recursively.
144 Klass* elem_klass =
145 get_klass_by_name_impl(accessing_klass,
146 cpool,
147 elem_sym,
148 require_local);
149 if (elem_klass != NULL) {
150 // Now make an array for it
151 return elem_klass->array_klass(CHECK_NULL);
152 }
153 }
154
155 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
156 // Look inside the constant pool for pre-resolved class entries.
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81 if (resolved_klass->is_objArray_klass()) {
82 // Find the element klass, if this is an array.
83 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
84 }
85 if (resolved_klass->is_instance_klass()) {
86 Reflection::VerifyClassAccessResults result =
87 Reflection::verify_class_access(accessing_klass, InstanceKlass::cast(resolved_klass), true);
88 return result == Reflection::ACCESS_OK;
89 }
90 return true;
91 }
92
93 // ------------------------------------------------------------------
94 Klass* JVMCIEnv::get_klass_by_name_impl(Klass* accessing_klass,
95 const constantPoolHandle& cpool,
96 Symbol* sym,
97 bool require_local) {
98 JVMCI_EXCEPTION_CONTEXT;
99
100 // Now we need to check the SystemDictionary
101 if (sym->char_at(0) == 'L' &&
102 sym->char_at(sym->utf8_length()-1) == ';') {
103 // This is a name from a signature. Strip off the trimmings.
104 // Call recursive to keep scope of strippedsym.
105 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
106 sym->utf8_length()-2,
107 CHECK_NULL);
108 return get_klass_by_name_impl(accessing_klass, cpool, strippedsym, require_local);
109 }
110
111 Handle loader(THREAD, (oop)NULL);
112 Handle domain(THREAD, (oop)NULL);
113 if (accessing_klass != NULL) {
114 loader = Handle(THREAD, accessing_klass->class_loader());
115 domain = Handle(THREAD, accessing_klass->protection_domain());
116 }
117
118 Klass* found_klass = NULL;
119 {
120 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
121 MutexLocker ml(Compile_lock);
122 if (!require_local) {
123 found_klass = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, CHECK_NULL);
124 } else {
125 found_klass = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, CHECK_NULL);
126 }
127 }
128
129 // If we fail to find an array klass, look again for its element type.
130 // The element type may be available either locally or via constraints.
131 // In either case, if we can find the element type in the system dictionary,
132 // we must build an array type around it. The CI requires array klasses
133 // to be loaded if their element klasses are loaded, except when memory
134 // is exhausted.
135 if (sym->char_at(0) == '[' &&
136 (sym->char_at(1) == '[' || sym->char_at(1) == 'L')) {
137 // We have an unloaded array.
138 // Build it on the fly if the element class exists.
139 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
140 sym->utf8_length()-1,
141 CHECK_NULL);
142
143 // Get element Klass recursively.
144 Klass* elem_klass =
145 get_klass_by_name_impl(accessing_klass,
146 cpool,
147 elem_sym,
148 require_local);
149 if (elem_klass != NULL) {
150 // Now make an array for it
151 return elem_klass->array_klass(CHECK_NULL);
152 }
153 }
154
155 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
156 // Look inside the constant pool for pre-resolved class entries.
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