1/*
2 * Copyright (c) 2014, 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
25package sun.jvm.hotspot.oops;
26
27import java.io.*;
28import java.util.*;
29import sun.jvm.hotspot.debugger.*;
30import sun.jvm.hotspot.runtime.*;
31import sun.jvm.hotspot.types.*;
32import sun.jvm.hotspot.utilities.*;
33
34// ParametersTypeData
35//
36// A ParametersTypeData is used to access profiling information about
37// types of parameters to a method
38public class ParametersTypeData<K,M> extends ArrayData {
39  final TypeStackSlotEntries<K,M> parameters;
40
41  static int stackSlotLocalOffset(int i) {
42    return arrayStartOffSet + TypeStackSlotEntries.stackSlotLocalOffset(i);
43  }
44
45  static int typeLocalOffset(int i) {
46    return arrayStartOffSet + TypeStackSlotEntries.typeLocalOffset(i);
47  }
48
49  public ParametersTypeData(MethodDataInterface<K,M> methodData, DataLayout layout) {
50    super(layout);
51    parameters = new TypeStackSlotEntries<K,M>(methodData, this, 1, numberOfParameters());
52  }
53
54  public int numberOfParameters() {
55    return arrayLen() / TypeStackSlotEntries.perArgCount();
56  }
57
58  int stackSlot(int i) {
59    return parameters.stackSlot(i);
60  }
61
62  public K type(int i) {
63    return parameters.type(i);
64  }
65
66  static public int typeIndex(int i) {
67    return typeLocalOffset(i);
68  }
69
70  public void printDataOn(PrintStream st) {
71    st.print("parameter types");
72    parameters.printDataOn(st);
73  }
74}
75