/**
* 为某一类型对应的java.lang.Class实例分配存储空间
*/
instanceOop instanceMirrorKlass::allocate_instance(KlassHandle k, TRAPS) {
// Query before forming handle.
int size = instance_size(k);
KlassHandle h_k(THREAD, as_klassOop());
instanceOop i = (instanceOop) CollectedHeap::Class_obj_allocate(h_k, size, k, CHECK_NULL);
return i;
}
void NearClass::print_value_on(Stream* st) {
#if USE_DEBUG_PRINTING
// This is called for both Java Near classes and for generic near classes
const char *super_type;
switch(instance_size().value()) {
case InstanceSize::size_java_near: {
FarClass parent = klass();
if (parent.equals(Universe::type_array_class_class())) {
super_type = "TypeArray";
} else if (parent.equals(Universe::obj_array_class_class())) {
super_type = "ObjArray";
} else if (parent.equals(Universe::instance_class_class())) {
super_type = "Instance";
} else {
super_type = "??Java??";
}
break;
}
case InstanceSize::size_generic_near:
super_type = "Generic";
break;
case InstanceSize::size_obj_near: // for methods
super_type = "Object";
break;
default:
super_type = "??";
break;
}
st->print("The %s NearClass ", super_type);
#endif
}
instanceOop InstanceMirrorKlass::allocate_instance(KlassHandle k, TRAPS) {
// Query before forming handle.
int size = instance_size(k);
KlassHandle h_k(THREAD, this);
instanceOop i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL);
// Since mirrors can be variable sized because of the static fields, store
// the size in the mirror itself.
java_lang_Class::set_oop_size(i, size);
return i;
}
jubyte* extern_oop_map() const {
GUARANTEE(instance_size().value() < 0,
"Instances don't have external oop map");
return _oop_map._extern;
}
jubyte* embedded_oop_map() const {
GUARANTEE(instance_size().value() > 0, "Not an instance");
return (jubyte*) this + _oop_map._embedded_start;
}
