aboutsummaryrefslogtreecommitdiff
path: root/src/share/vm/ci/ciInstance.hpp
blob: aed32773b27e14b7c8628241bf8592a4402762c6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
/*
 * Copyright (c) 1999, 2005, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

// ciInstance
//
// This class represents an instanceOop in the HotSpot virtual
// machine.  This is an oop which corresponds to a non-array
// instance of java.lang.Object.
class ciInstance : public ciObject {
  CI_PACKAGE_ACCESS

protected:
  ciInstance(instanceHandle h_i) : ciObject(h_i) {
    assert(h_i()->is_instance(), "wrong type");
  }

  ciInstance(ciKlass* klass) : ciObject(klass) {}

  instanceOop get_instanceOop() { return (instanceOop)get_oop(); }

  const char* type_string() { return "ciInstance"; }

  void print_impl(outputStream* st);

public:
  // If this object is a java mirror, return the corresponding type.
  // Otherwise, return NULL.
  // (Remember that a java mirror is an instance of java.lang.Class.)
  ciType* java_mirror_type();

  // What kind of ciObject is this?
  bool is_instance()     { return true; }
  bool is_java_object()  { return true; }

  // Constant value of a field.
  ciConstant field_value(ciField* field);

  // Constant value of a field at the specified offset.
  ciConstant field_value_by_offset(int field_offset);
};