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comparison src/share/vm/ci/ciInstance.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 1999-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 // ciInstance
26 //
27 // This class represents an instanceOop in the HotSpot virtual
28 // machine. This is an oop which corresponds to a non-array
29 // instance of java.lang.Object.
30 class ciInstance : public ciObject {
31 CI_PACKAGE_ACCESS
32
33 protected:
34 ciInstance(instanceHandle h_i) : ciObject(h_i) {
35 assert(h_i()->is_instance(), "wrong type");
36 }
37
38 ciInstance(ciKlass* klass) : ciObject(klass) {}
39
40 instanceOop get_instanceOop() { return (instanceOop)get_oop(); }
41
42 const char* type_string() { return "ciInstance"; }
43
44 void print_impl(outputStream* st);
45
46 public:
47 // If this object is a java mirror, return the corresponding type.
48 // Otherwise, return NULL.
49 // (Remember that a java mirror is an instance of java.lang.Class.)
50 ciType* java_mirror_type();
51
52 // What kind of ciObject is this?
53 bool is_instance() { return true; }
54 bool is_java_object() { return true; }
55
56 // Constant value of a field.
57 ciConstant field_value(ciField* field);
58
59 // Constant value of a field at the specified offset.
60 ciConstant field_value_by_offset(int field_offset);
61 };