169 } else {
170 _type = ciType::make(field_type);
171 }
172
173 initialize_from(fd);
174
175 // Either (a) it is marked shared, or else (b) we are done bootstrapping.
176 assert(is_shared() || ciObjectFactory::is_initialized(),
177 "bootstrap classes must not create & cache unshared fields");
178 }
179
180 static bool trust_final_non_static_fields(ciInstanceKlass* holder) {
181 if (holder == NULL)
182 return false;
183 if (holder->name() == ciSymbol::java_lang_System())
184 // Never trust strangely unstable finals: System.out, etc.
185 return false;
186 // Even if general trusting is disabled, trust system-built closures in these packages.
187 if (holder->is_in_package("java/lang/invoke") || holder->is_in_package("sun/invoke"))
188 return true;
189 return TrustFinalNonStaticFields;
190 }
191
192 void ciField::initialize_from(fieldDescriptor* fd) {
193 // Get the flags, offset, and canonical holder of the field.
194 _flags = ciFlags(fd->access_flags());
195 _offset = fd->offset();
196 _holder = CURRENT_ENV->get_instance_klass(fd->field_holder());
197
198 // Check to see if the field is constant.
199 bool is_final = this->is_final();
200 bool is_stable = FoldStableValues && this->is_stable();
201 if (_holder->is_initialized() && (is_final || is_stable)) {
202 if (!this->is_static()) {
203 // A field can be constant if it's a final static field or if
204 // it's a final non-static field of a trusted class (classes in
205 // java.lang.invoke and sun.invoke packages and subpackages).
206 if (is_stable || trust_final_non_static_fields(_holder)) {
207 _is_constant = true;
208 return;
|
169 } else {
170 _type = ciType::make(field_type);
171 }
172
173 initialize_from(fd);
174
175 // Either (a) it is marked shared, or else (b) we are done bootstrapping.
176 assert(is_shared() || ciObjectFactory::is_initialized(),
177 "bootstrap classes must not create & cache unshared fields");
178 }
179
180 static bool trust_final_non_static_fields(ciInstanceKlass* holder) {
181 if (holder == NULL)
182 return false;
183 if (holder->name() == ciSymbol::java_lang_System())
184 // Never trust strangely unstable finals: System.out, etc.
185 return false;
186 // Even if general trusting is disabled, trust system-built closures in these packages.
187 if (holder->is_in_package("java/lang/invoke") || holder->is_in_package("sun/invoke"))
188 return true;
189 // Trust VM anonymous classes. They are private API (sun.misc.Unsafe) and can't be serialized,
190 // so there is no hacking of finals going on with them.
191 if (holder->is_anonymous())
192 return true;
193 return TrustFinalNonStaticFields;
194 }
195
196 void ciField::initialize_from(fieldDescriptor* fd) {
197 // Get the flags, offset, and canonical holder of the field.
198 _flags = ciFlags(fd->access_flags());
199 _offset = fd->offset();
200 _holder = CURRENT_ENV->get_instance_klass(fd->field_holder());
201
202 // Check to see if the field is constant.
203 bool is_final = this->is_final();
204 bool is_stable = FoldStableValues && this->is_stable();
205 if (_holder->is_initialized() && (is_final || is_stable)) {
206 if (!this->is_static()) {
207 // A field can be constant if it's a final static field or if
208 // it's a final non-static field of a trusted class (classes in
209 // java.lang.invoke and sun.invoke packages and subpackages).
210 if (is_stable || trust_final_non_static_fields(_holder)) {
211 _is_constant = true;
212 return;
|