src/hotspot/share/prims/jvm.cpp

*** 1254,1264 ****
      size = 2;
    }
  
    // Allocate result array
    objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL);
!   objArrayHandle result (THREAD, r);
    // Fill in result
    if (klass->is_instance_klass()) {
      // Regular instance klass, fill in all local interfaces
      for (int index = 0; index < size; index++) {
        Klass* k = InstanceKlass::cast(klass)->local_interfaces()->at(index);
--- 1254,1264 ----
      size = 2;
    }
  
    // Allocate result array
    objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL);
!   objArrayHandle result(THREAD, r);
    // Fill in result
    if (klass->is_instance_klass()) {
      // Regular instance klass, fill in all local interfaces
      for (int index = 0; index < size; index++) {
        Klass* k = InstanceKlass::cast(klass)->local_interfaces()->at(index);
*** 2098,2107 ****
--- 2098,2134 ----
      }
      return (jobjectArray)JNIHandles::make_local(THREAD, result());
    }
  }
  JVM_END
+ 
+ JVM_ENTRY(jobjectArray, JVM_GetPermittedSubclasses(JNIEnv* env, jclass current))
+ {
+   JVMWrapper("JVM_GetPermittedSubclasses");
+   assert(!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(current)), "should not be");
+   Klass* c = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(current));
+   assert(c->is_instance_klass(), "must be");
+   InstanceKlass* ik = InstanceKlass::cast(c);
+   {
+     JvmtiVMObjectAllocEventCollector oam;
+     Array<u2>* subclasses = ik->permitted_subclasses();
+     int length = subclasses == NULL ? 0 : subclasses->length();
+     objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(),
+                                              length, CHECK_NULL);
+     objArrayHandle result(THREAD, r);
+     for (int i = 0; i < length; i++) {
+       int cp_index = subclasses->at(i);
+       // This returns <package-name>/<class-name>.
+       Symbol* klass_name = ik->constants()->klass_name_at(cp_index);
+       assert(klass_name != NULL, "Unexpected null klass_name");
+       Handle perm_subtype_h = java_lang_String::create_from_symbol(klass_name, CHECK_NULL);
+       result->obj_at_put(i, perm_subtype_h());
+     }
+     return (jobjectArray)JNIHandles::make_local(THREAD, result());
+   }
+ }
+ JVM_END
  
  // Constant pool access //////////////////////////////////////////////////////////
  
  JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls))
  {