1/*
2 * Copyright (c) 1999, 2019, 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
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23 */
24
25#ifndef SHARE_CI_CIINSTANCE_HPP
26#define SHARE_CI_CIINSTANCE_HPP
27
28#include "ci/ciObject.hpp"
29#include "oops/instanceOop.hpp"
30#include "oops/oop.hpp"
31
32// ciInstance
33//
34// This class represents an instanceOop in the HotSpot virtual
35// machine. This is an oop which corresponds to a non-array
36// instance of java.lang.Object.
37class ciInstance : public ciObject {
38 CI_PACKAGE_ACCESS
39 friend class ciField;
40
41protected:
42 ciInstance(instanceHandle h_i) : ciObject(h_i) {
43 assert(h_i()->is_instance_noinline(), "wrong type");
44 }
45
46 ciInstance(ciKlass* klass) : ciObject(klass) {}
47
48 instanceOop get_instanceOop() { return (instanceOop)get_oop(); }
49
50 const char* type_string() { return "ciInstance"; }
51
52 void print_impl(outputStream* st);
53
54 ciConstant field_value_impl(BasicType field_btype, int offset);
55
56public:
57 // If this object is a java mirror, return the corresponding type.
58 // Otherwise, return NULL.
59 // (Remember that a java mirror is an instance of java.lang.Class.)
60 ciType* java_mirror_type();
61
62 // What kind of ciObject is this?
63 bool is_instance() { return true; }
64 bool is_java_object() { return true; }
65
66 // Constant value of a field.
67 ciConstant field_value(ciField* field);
68
69 // Constant value of a field at the specified offset.
70 ciConstant field_value_by_offset(int field_offset);
71
72 ciKlass* java_lang_Class_klass();
73};
74
75#endif // SHARE_CI_CIINSTANCE_HPP
76