#ifndef SHARE_VM_OOPS_ARRAYKLASS_HPP

#define SHARE_VM_OOPS_ARRAYKLASS_HPP

#include "memory/universe.hpp"

#include "oops/klass.hpp"

#include "oops/klassOop.hpp"

#include "oops/klassVtable.hpp"

class arrayKlass: public Klass {

friend class VMStructs;

private:

int _dimension; // This is n'th-dimensional array.

volatile klassOop _higher_dimension; // Refers the (n+1)'th-dimensional array (if present).

volatile klassOop _lower_dimension; // Refers the (n-1)'th-dimensional array (if present).

int _vtable_len; // size of vtable for this klass

juint _alloc_size; // allocation profiling support

oop _component_mirror; // component type, as a java/lang/Class

public:

// Testing operation

bool oop_is_array() const { return true; }

// Instance variables

int dimension() const { return _dimension; }

void set_dimension(int dimension) { _dimension = dimension; }

klassOop higher_dimension() const { return _higher_dimension; }

void set_higher_dimension(klassOop k) { oop_store_without_check((oop*) &_higher_dimension, (oop) k); }

oop* adr_higher_dimension() { return (oop*)&this->_higher_dimension;}

klassOop lower_dimension() const { return _lower_dimension; }

void set_lower_dimension(klassOop k) { oop_store_without_check((oop*) &_lower_dimension, (oop) k); }

oop* adr_lower_dimension() { return (oop*)&this->_lower_dimension;}

// Allocation profiling support

juint alloc_size() const { return _alloc_size; }

void set_alloc_size(juint n) { _alloc_size = n; }

// offset of first element, including any padding for the sake of alignment

int array_header_in_bytes() const { return layout_helper_header_size(layout_helper()); }

int log2_element_size() const { return layout_helper_log2_element_size(layout_helper()); }

// type of elements (T_OBJECT for both oop arrays and array-arrays)

BasicType element_type() const { return layout_helper_element_type(layout_helper()); }

oop component_mirror() const { return _component_mirror; }

void set_component_mirror(oop m) { oop_store((oop*) &_component_mirror, m); }

oop* adr_component_mirror() { return (oop*)&this->_component_mirror;}

// Compiler/Interpreter offset

static ByteSize component_mirror_offset() { return in_ByteSize(sizeof(klassOopDesc) + offset_of(arrayKlass, _component_mirror)); }

virtual klassOop java_super() const;//{ return SystemDictionary::Object_klass(); }

// Allocation

// Sizes points to the first dimension of the array, subsequent dimensions

// are always in higher memory. The callers of these set that up.

virtual oop multi_allocate(int rank, jint* sizes, TRAPS);

objArrayOop allocate_arrayArray(int n, int length, TRAPS);

// Lookup operations

methodOop uncached_lookup_method(Symbol* name, Symbol* signature) const;

// Casting from klassOop

static arrayKlass* cast(klassOop k) {

Klass* kp = k->klass_part();

assert(kp->null_vtbl() || kp->oop_is_array(), "cast to arrayKlass");

return (arrayKlass*) kp;

}

objArrayOop compute_secondary_supers(int num_extra_slots, TRAPS);

bool compute_is_subtype_of(klassOop k);

// Sizing

static int header_size() { return oopDesc::header_size() + sizeof(arrayKlass)/HeapWordSize; }

int object_size(int header_size) const;

bool object_is_parsable() const { return _vtable_len > 0; }

// Java vtable

klassVtable* vtable() const; // return new klassVtable

int vtable_length() const { return _vtable_len; }

static int base_vtable_length() { return Universe::base_vtable_size(); }

void set_vtable_length(int len) { assert(len == base_vtable_length(), "bad length"); _vtable_len = len; }

protected:

inline intptr_t* start_of_vtable() const;

public:

// Iterators

void array_klasses_do(void f(klassOop k));

void with_array_klasses_do(void f(klassOop k));

// Shared creation method

static arrayKlassHandle base_create_array_klass(

const Klass_vtbl& vtbl,

int header_size, KlassHandle klass,

TRAPS);

// Return a handle.

static void complete_create_array_klass(arrayKlassHandle k, KlassHandle super_klass, TRAPS);

// jvm support

jint compute_modifier_flags(TRAPS) const;

// JVMTI support

jint jvmti_class_status() const;

// Printing

void oop_print_on(oop obj, outputStream* st);

// Verification

void oop_verify_on(oop obj, outputStream* st);

};

#endif // SHARE_VM_OOPS_ARRAYKLASS_HPP