1 /*
2 * Copyright (c) 2011, 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 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 package sun.jvm.hotspot.ci;
26
27 import java.io.*;
28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.oops.*;
32 import sun.jvm.hotspot.types.*;
33
34 public class ciMethodData extends ciObject {
35 static {
36 VM.registerVMInitializedObserver(new Observer() {
37 public void update(Observable o, Object data) {
38 initialize(VM.getVM().getTypeDataBase());
39 }
40 });
41 }
42
43 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
44 Type type = db.lookupType("ciMethodData");
45 origField = type.getAddressField("_orig");
46 currentMileageField = new CIntField(type.getCIntegerField("_current_mileage"), 0);
47 argReturnedField = new CIntField(type.getCIntegerField("_arg_returned"), 0);
48 argStackField = new CIntField(type.getCIntegerField("_arg_stack"), 0);
49 argLocalField = new CIntField(type.getCIntegerField("_arg_local"), 0);
50 eflagsField = new CIntField(type.getCIntegerField("_eflags"), 0);
51 hintDiField = new CIntField(type.getCIntegerField("_hint_di"), 0);
52 currentMileageField = new CIntField(type.getCIntegerField("_current_mileage"), 0);
53 dataField = type.getAddressField("_data");
54 extraDataSizeField = new CIntField(type.getCIntegerField("_extra_data_size"), 0);
55 dataSizeField = new CIntField(type.getCIntegerField("_data_size"), 0);
56 stateField = new CIntField(type.getCIntegerField("_state"), 0);
57 sizeofMethodDataOopDesc = (int)db.lookupType("methodDataOopDesc").getSize();;
58 }
59
60 private static AddressField origField;
61 private static CIntField currentMileageField;
62 private static CIntField argReturnedField;
63 private static CIntField argStackField;
64 private static CIntField argLocalField;
65 private static CIntField eflagsField;
66 private static CIntField hintDiField;
67 private static AddressField dataField;
68 private static CIntField extraDataSizeField;
69 private static CIntField dataSizeField;
70 private static CIntField stateField;
71 private static int sizeofMethodDataOopDesc;
72
73 public ciMethodData(Address addr) {
74 super(addr);
75 }
76
77 private byte[] fetchDataAt(Address base, long size) {
78 byte[] result = new byte[(int)size];
79 for (int i = 0; i < size; i++) {
80 result[i] = base.getJByteAt(i);
81 }
82 return result;
83 }
84
85 public byte[] orig() {
86 // fetch the orig methodDataOopDesc data between header and dataSize
87 Address base = getAddress().addOffsetTo(origField.getOffset());
88 byte[] result = new byte[MethodData.sizeofMethodDataOopDesc];
89 for (int i = 0; i < MethodData.sizeofMethodDataOopDesc; i++) {
90 result[i] = base.getJByteAt(i);
91 }
92 return result;
93 }
94
95 public long[] data() {
96 // Read the data as an array of intptr_t elements
97 Address base = dataField.getValue(getAddress());
98 int elements = dataSize() / MethodData.cellSize;
99 long[] result = new long[elements];
100 for (int i = 0; i < elements; i++) {
101 Address value = base.getAddressAt(i * MethodData.cellSize);
102 if (value != null) {
103 result[i] = value.minus(null);
104 }
105 }
106 return result;
107 }
108
109 int dataSize() {
110 return (int)dataSizeField.getValue(getAddress());
111 }
112
113 int state() {
114 return (int)stateField.getValue(getAddress());
115 }
116
117 int currentMileage() {
118 return (int)currentMileageField.getValue(getAddress());
119 }
120
121 boolean outOfBounds(int dataIndex) {
122 return dataIndex >= dataSize();
123 }
124
125 ProfileData dataAt(int dataIndex) {
126 if (outOfBounds(dataIndex)) {
127 return null;
128 }
129 DataLayout dataLayout = new DataLayout(dataField.getValue(getAddress()), dataIndex);
130
131 switch (dataLayout.tag()) {
132 case DataLayout.noTag:
133 default:
134 throw new InternalError();
135 case DataLayout.bitDataTag:
136 return new BitData(dataLayout);
137 case DataLayout.counterDataTag:
138 return new CounterData(dataLayout);
139 case DataLayout.jumpDataTag:
140 return new JumpData(dataLayout);
141 case DataLayout.receiverTypeDataTag:
142 return new ciReceiverTypeData(dataLayout);
143 case DataLayout.virtualCallDataTag:
144 return new ciVirtualCallData(dataLayout);
145 case DataLayout.retDataTag:
146 return new RetData(dataLayout);
147 case DataLayout.branchDataTag:
148 return new BranchData(dataLayout);
149 case DataLayout.multiBranchDataTag:
150 return new MultiBranchData(dataLayout);
151 }
152 }
153
154 int dpToDi(int dp) {
155 return dp;
156 }
157
158 int firstDi() { return 0; }
159 ProfileData firstData() { return dataAt(firstDi()); }
160 ProfileData nextData(ProfileData current) {
161 int currentIndex = dpToDi(current.dp());
162 int nextIndex = currentIndex + current.sizeInBytes();
163 return dataAt(nextIndex);
164 }
165 boolean isValid(ProfileData current) { return current != null; }
166
167 public void printDataOn(PrintStream st) {
168 ProfileData data = firstData();
169 for ( ; isValid(data); data = nextData(data)) {
170 st.print(dpToDi(data.dp()));
171 st.print(" ");
172 // st->fillTo(6);
173 data.printDataOn(st);
174 }
175 }
176
177 }