duke@435: /*
never@2658:  * Copyright (c) 1997, 2011, 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_KLASSOOP_HPP
stefank@2314: #define SHARE_VM_OOPS_KLASSOOP_HPP
stefank@2314: 
stefank@2314: #include "oops/oop.hpp"
stefank@2314: 
duke@435: // A klassOop is the C++ equivalent of a Java class.
duke@435: // Part of a klassOopDesc is a Klass which handle the
duke@435: // dispatching for the C++ method calls.
duke@435: 
duke@435: //  klassOop object layout:
duke@435: //    [header     ]
duke@435: //    [klass_field]
duke@435: //    [KLASS      ]
duke@435: 
duke@435: class klassOopDesc : public oopDesc {
duke@435:  public:
duke@435:   // size operation
duke@435:   static int header_size()                       { return sizeof(klassOopDesc)/HeapWordSize; }
duke@435: 
duke@435:   // support for code generation
duke@435:   static int klass_part_offset_in_bytes()        { return sizeof(klassOopDesc); }
duke@435: 
duke@435:   // returns the Klass part containing dispatching behavior
never@2658:   Klass* klass_part() const                      { return (Klass*)((address)this + klass_part_offset_in_bytes()); }
never@2658: 
never@2658:   // Convenience wrapper
never@2658:   inline oop java_mirror() const;
never@2658: 
never@2658:  private:
never@2658:   // These have no implementation since klassOop should never be accessed in this fashion
never@2658:   oop obj_field(int offset) const;
never@2658:   void obj_field_put(int offset, oop value);
never@2658:   void obj_field_raw_put(int offset, oop value);
never@2658: 
never@2658:   jbyte byte_field(int offset) const;
never@2658:   void byte_field_put(int offset, jbyte contents);
never@2658: 
never@2658:   jchar char_field(int offset) const;
never@2658:   void char_field_put(int offset, jchar contents);
never@2658: 
never@2658:   jboolean bool_field(int offset) const;
never@2658:   void bool_field_put(int offset, jboolean contents);
never@2658: 
never@2658:   jint int_field(int offset) const;
never@2658:   void int_field_put(int offset, jint contents);
never@2658: 
never@2658:   jshort short_field(int offset) const;
never@2658:   void short_field_put(int offset, jshort contents);
never@2658: 
never@2658:   jlong long_field(int offset) const;
never@2658:   void long_field_put(int offset, jlong contents);
never@2658: 
never@2658:   jfloat float_field(int offset) const;
never@2658:   void float_field_put(int offset, jfloat contents);
never@2658: 
never@2658:   jdouble double_field(int offset) const;
never@2658:   void double_field_put(int offset, jdouble contents);
never@2658: 
never@2658:   address address_field(int offset) const;
never@2658:   void address_field_put(int offset, address contents);
never@2658: 
never@2658:   oop obj_field_acquire(int offset) const;
never@2658:   void release_obj_field_put(int offset, oop value);
never@2658: 
never@2658:   jbyte byte_field_acquire(int offset) const;
never@2658:   void release_byte_field_put(int offset, jbyte contents);
never@2658: 
never@2658:   jchar char_field_acquire(int offset) const;
never@2658:   void release_char_field_put(int offset, jchar contents);
never@2658: 
never@2658:   jboolean bool_field_acquire(int offset) const;
never@2658:   void release_bool_field_put(int offset, jboolean contents);
never@2658: 
never@2658:   jint int_field_acquire(int offset) const;
never@2658:   void release_int_field_put(int offset, jint contents);
never@2658: 
never@2658:   jshort short_field_acquire(int offset) const;
never@2658:   void release_short_field_put(int offset, jshort contents);
never@2658: 
never@2658:   jlong long_field_acquire(int offset) const;
never@2658:   void release_long_field_put(int offset, jlong contents);
never@2658: 
never@2658:   jfloat float_field_acquire(int offset) const;
never@2658:   void release_float_field_put(int offset, jfloat contents);
never@2658: 
never@2658:   jdouble double_field_acquire(int offset) const;
never@2658:   void release_double_field_put(int offset, jdouble contents);
never@2658: 
never@2658:   address address_field_acquire(int offset) const;
never@2658:   void release_address_field_put(int offset, address contents);
duke@435: };
stefank@2314: 
stefank@2314: #endif // SHARE_VM_OOPS_KLASSOOP_HPP