1 /*
2 * Copyright (c) 1997, 2002, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // A klassOop is the C++ equivalent of a Java class.
26 // Part of a klassOopDesc is a Klass which handle the
27 // dispatching for the C++ method calls.
28
29 // klassOop object layout:
30 // [header ]
31 // [klass_field]
32 // [KLASS ]
33
34 class klassOopDesc : public oopDesc {
35 public:
36 // size operation
37 static int header_size() { return sizeof(klassOopDesc)/HeapWordSize; }
38
39 // support for code generation
40 static int klass_part_offset_in_bytes() { return sizeof(klassOopDesc); }
41
42 // returns the Klass part containing dispatching behavior
43 Klass* klass_part() { return (Klass*)((address)this + klass_part_offset_in_bytes()); }
44 };
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1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_OOPS_KLASSOOP_HPP
26 #define SHARE_VM_OOPS_KLASSOOP_HPP
27
28 #include "oops/oop.hpp"
29
30 // A klassOop is the C++ equivalent of a Java class.
31 // Part of a klassOopDesc is a Klass which handle the
32 // dispatching for the C++ method calls.
33
34 // klassOop object layout:
35 // [header ]
36 // [klass_field]
37 // [KLASS ]
38
39 class klassOopDesc : public oopDesc {
40 public:
41 // size operation
42 static int header_size() { return sizeof(klassOopDesc)/HeapWordSize; }
43
44 // support for code generation
45 static int klass_part_offset_in_bytes() { return sizeof(klassOopDesc); }
46
47 // returns the Klass part containing dispatching behavior
48 Klass* klass_part() { return (Klass*)((address)this + klass_part_offset_in_bytes()); }
49 };
50
51 #endif // SHARE_VM_OOPS_KLASSOOP_HPP
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