duke@435: /*
coleenp@4037:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #ifndef SHARE_VM_OOPS_TYPEARRAYKLASS_HPP
stefank@2314: #define SHARE_VM_OOPS_TYPEARRAYKLASS_HPP
stefank@2314: 
coleenp@4037: #include "classfile/classLoaderData.hpp"
stefank@2314: #include "oops/arrayKlass.hpp"
stefank@2314: 
coleenp@4142: // A TypeArrayKlass is the klass of a typeArray
duke@435: // It contains the type and size of the elements
duke@435: 
coleenp@4142: class TypeArrayKlass : public ArrayKlass {
duke@435:   friend class VMStructs;
duke@435:  private:
duke@435:   jint _max_length;            // maximum number of elements allowed in an array
coleenp@4037: 
coleenp@4037:   // Constructor
coleenp@4142:   TypeArrayKlass(BasicType type, Symbol* name);
coleenp@4142:   static TypeArrayKlass* allocate(ClassLoaderData* loader_data, BasicType type, Symbol* name, TRAPS);
duke@435:  public:
coleenp@4142:   TypeArrayKlass() {} // For dummy objects.
coleenp@4037: 
duke@435:   // instance variables
duke@435:   jint max_length()                     { return _max_length; }
duke@435:   void set_max_length(jint m)           { _max_length = m;    }
duke@435: 
duke@435:   // testers
duke@435:   bool oop_is_typeArray_slow() const    { return true; }
duke@435: 
duke@435:   // klass allocation
coleenp@4142:   static TypeArrayKlass* create_klass(BasicType type, const char* name_str,
jcoomes@916:                                TRAPS);
coleenp@4037:   static inline Klass* create_klass(BasicType type, int scale, TRAPS) {
coleenp@4142:     TypeArrayKlass* tak = create_klass(type, external_name(type), CHECK_NULL);
coleenp@4037:     assert(scale == (1 << tak->log2_element_size()), "scale must check out");
coleenp@4037:     return tak;
jcoomes@916:   }
duke@435: 
duke@435:   int oop_size(oop obj) const;
duke@435: 
coleenp@4037:   bool compute_is_subtype_of(Klass* k);
duke@435: 
duke@435:   // Allocation
kvn@3157:   typeArrayOop allocate_common(int length, bool do_zero, TRAPS);
kvn@3157:   typeArrayOop allocate(int length, TRAPS) { return allocate_common(length, true, THREAD); }
duke@435:   oop multi_allocate(int rank, jint* sizes, TRAPS);
duke@435: 
duke@435:   // Copying
duke@435:   void  copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
duke@435: 
duke@435:   // Iteration
coleenp@4037:   int oop_oop_iterate(oop obj, ExtendedOopClosure* blk);
coleenp@4037:   int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr);
duke@435: 
duke@435:   // Garbage collection
duke@435:   void oop_follow_contents(oop obj);
duke@435:   int  oop_adjust_pointers(oop obj);
duke@435: 
duke@435:   // Parallel Scavenge and Parallel Old
duke@435:   PARALLEL_GC_DECLS
duke@435: 
duke@435:  protected:
duke@435:   // Find n'th dimensional array
coleenp@4037:   virtual Klass* array_klass_impl(bool or_null, int n, TRAPS);
duke@435: 
duke@435:   // Returns the array class with this class as element type
coleenp@4037:   virtual Klass* array_klass_impl(bool or_null, TRAPS);
duke@435: 
duke@435:  public:
coleenp@4037:   // Casting from Klass*
coleenp@4142:   static TypeArrayKlass* cast(Klass* k) {
coleenp@4142:     assert(k->oop_is_typeArray(), "cast to TypeArrayKlass");
coleenp@4142:     return (TypeArrayKlass*) k;
duke@435:   }
duke@435: 
duke@435:   // Naming
duke@435:   static const char* external_name(BasicType type);
duke@435: 
duke@435:   // Sizing
coleenp@4142:   static int header_size()  { return sizeof(TypeArrayKlass)/HeapWordSize; }
coleenp@4142:   int size() const          { return ArrayKlass::static_size(header_size()); }
duke@435: 
duke@435:   // Initialization (virtual from Klass)
duke@435:   void initialize(TRAPS);
duke@435: 
duke@435:  public:
duke@435:   // Printing
coleenp@4037: #ifndef PRODUCT
duke@435:   void oop_print_on(oop obj, outputStream* st);
duke@435: #endif
coleenp@4037: 
coleenp@4037:   void print_on(outputStream* st) const;
coleenp@4037:   void print_value_on(outputStream* st) const;
coleenp@4037: 
duke@435:  public:
duke@435:   const char* internal_name() const;
duke@435: };
stefank@2314: 
stefank@2314: #endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP