author | prr |
Tue, 15 Jul 2014 11:22:14 -0700 | |
changeset 25522 | 10d789df41bb |
parent 14342 | 8435a30053c1 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
14342
8435a30053c1
7197491: update copyright year to match last edit in jdk8 jdk repository
alanb
parents:
11277
diff
changeset
|
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* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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5506 | 21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.tools.jdi; |
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27 |
||
28 |
import com.sun.jdi.*; |
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29 |
||
30 |
import java.util.List; |
|
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import java.util.Map; |
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import java.util.Iterator; |
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import java.util.ListIterator; |
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import java.util.HashMap; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.lang.ref.SoftReference; |
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38 |
||
39 |
/** |
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* Represents methods with method bodies. |
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* That is, non-native non-abstract methods. |
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* Private to MethodImpl. |
|
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*/ |
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public class ConcreteMethodImpl extends MethodImpl { |
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45 |
||
46 |
/* |
|
47 |
* A subset of the line number info that is softly cached |
|
48 |
*/ |
|
49 |
static private class SoftLocationXRefs { |
|
50 |
final String stratumID; // The stratum of this information |
|
51 |
final Map<Integer, List<Location>> lineMapper; // Maps line number to location(s) |
|
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final List<Location> lineLocations; // List of locations ordered by code index |
|
53 |
||
54 |
/* |
|
55 |
* Note: these do not necessarily correspond to |
|
56 |
* the line numbers of the first and last elements |
|
57 |
* in the lineLocations list. Use these only for bounds |
|
58 |
* checking and with lineMapper. |
|
59 |
*/ |
|
60 |
final int lowestLine; |
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61 |
final int highestLine; |
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62 |
||
63 |
SoftLocationXRefs(String stratumID, Map<Integer, List<Location>> lineMapper, List<Location> lineLocations, |
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64 |
int lowestLine, int highestLine) { |
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65 |
this.stratumID = stratumID; |
|
66 |
this.lineMapper = Collections.unmodifiableMap(lineMapper); |
|
67 |
this.lineLocations = |
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68 |
Collections.unmodifiableList(lineLocations); |
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this.lowestLine = lowestLine; |
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this.highestLine = highestLine; |
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71 |
} |
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72 |
} |
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73 |
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74 |
private Location location = null; |
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75 |
private SoftReference<SoftLocationXRefs> softBaseLocationXRefsRef; |
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private SoftReference<SoftLocationXRefs> softOtherLocationXRefsRef; |
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private SoftReference<List<LocalVariable>> variablesRef = null; |
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78 |
private boolean absentVariableInformation = false; |
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79 |
private long firstIndex = -1; |
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private long lastIndex = -1; |
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81 |
private SoftReference<byte[]> bytecodesRef = null; |
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82 |
private int argSlotCount = -1; |
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84 |
ConcreteMethodImpl(VirtualMachine vm, ReferenceTypeImpl declaringType, |
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85 |
long ref, |
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86 |
String name, String signature, |
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87 |
String genericSignature, int modifiers) { |
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88 |
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89 |
// The generic signature is set when this is created |
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super(vm, declaringType, ref, name, signature, |
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genericSignature, modifiers); |
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} |
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93 |
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94 |
public Location location() { |
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95 |
if (location == null) { |
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96 |
getBaseLocations(); |
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} |
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return location; |
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} |
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101 |
List<Location> sourceNameFilter(List<Location> list, |
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102 |
SDE.Stratum stratum, |
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String sourceName) |
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throws AbsentInformationException { |
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105 |
if (sourceName == null) { |
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return list; |
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} else { |
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/* needs sourceName filteration */ |
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List<Location> locs = new ArrayList<Location>(); |
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for (Location loc : list) { |
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111 |
if (((LocationImpl)loc).sourceName(stratum).equals(sourceName)) { |
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locs.add(loc); |
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} |
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} |
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return locs; |
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} |
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} |
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118 |
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119 |
List<Location> allLineLocations(SDE.Stratum stratum, |
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String sourceName) |
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throws AbsentInformationException { |
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List<Location> lineLocations = getLocations(stratum).lineLocations; |
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||
124 |
if (lineLocations.size() == 0) { |
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125 |
throw new AbsentInformationException(); |
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126 |
} |
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127 |
||
128 |
return Collections.unmodifiableList( |
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129 |
sourceNameFilter(lineLocations, stratum, sourceName)); |
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} |
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131 |
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132 |
List<Location> locationsOfLine(SDE.Stratum stratum, |
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133 |
String sourceName, |
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int lineNumber) |
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135 |
throws AbsentInformationException { |
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136 |
SoftLocationXRefs info = getLocations(stratum); |
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||
138 |
if (info.lineLocations.size() == 0) { |
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throw new AbsentInformationException(); |
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} |
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142 |
/* |
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143 |
* Find the locations which match the line number |
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144 |
* passed in. |
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145 |
*/ |
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25522
10d789df41bb
8049892: Replace uses of 'new Integer()' with appropriate alternative across core classes
prr
parents:
14342
diff
changeset
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146 |
List<Location> list = info.lineMapper.get(lineNumber); |
2 | 147 |
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148 |
if (list == null) { |
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149 |
list = new ArrayList<Location>(0); |
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} |
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return Collections.unmodifiableList( |
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sourceNameFilter(list, stratum, sourceName)); |
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} |
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154 |
||
155 |
||
156 |
public Location locationOfCodeIndex(long codeIndex) { |
|
157 |
if (firstIndex == -1) { |
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158 |
getBaseLocations(); |
|
159 |
} |
|
160 |
||
161 |
/* |
|
162 |
* Check for invalid code index. |
|
163 |
*/ |
|
164 |
if (codeIndex < firstIndex || codeIndex > lastIndex) { |
|
165 |
return null; |
|
166 |
} |
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167 |
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168 |
return new LocationImpl(virtualMachine(), this, codeIndex); |
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} |
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171 |
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172 |
LineInfo codeIndexToLineInfo(SDE.Stratum stratum, |
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173 |
long codeIndex) { |
|
174 |
if (firstIndex == -1) { |
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175 |
getBaseLocations(); |
|
176 |
} |
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177 |
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178 |
/* |
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179 |
* Check for invalid code index. |
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180 |
*/ |
|
181 |
if (codeIndex < firstIndex || codeIndex > lastIndex) { |
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182 |
throw new InternalError( |
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"Location with invalid code index"); |
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184 |
} |
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186 |
List<Location> lineLocations = getLocations(stratum).lineLocations; |
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188 |
/* |
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189 |
* Check for absent line numbers. |
|
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*/ |
|
191 |
if (lineLocations.size() == 0) { |
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192 |
return super.codeIndexToLineInfo(stratum, codeIndex); |
|
193 |
} |
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11277 | 195 |
Iterator<Location> iter = lineLocations.iterator(); |
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/* |
197 |
* Treat code before the beginning of the first line table |
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198 |
* entry as part of the first line. javac will generate |
|
199 |
* code like this for some local classes. This "prolog" |
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* code contains assignments from locals in the enclosing |
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* scope to synthetic fields in the local class. Same for |
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* other language prolog code. |
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*/ |
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LocationImpl bestMatch = (LocationImpl)iter.next(); |
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while (iter.hasNext()) { |
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LocationImpl current = (LocationImpl)iter.next(); |
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if (current.codeIndex() > codeIndex) { |
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break; |
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} |
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bestMatch = current; |
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} |
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return bestMatch.getLineInfo(stratum); |
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213 |
} |
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214 |
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215 |
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216 |
public List<LocalVariable> variables() throws AbsentInformationException { |
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return getVariables(); |
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} |
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220 |
public List<LocalVariable> variablesByName(String name) throws AbsentInformationException { |
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List<LocalVariable> variables = getVariables(); |
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223 |
List<LocalVariable> retList = new ArrayList<LocalVariable>(2); |
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11277 | 224 |
Iterator<LocalVariable> iter = variables.iterator(); |
2 | 225 |
while(iter.hasNext()) { |
11277 | 226 |
LocalVariable variable = iter.next(); |
2 | 227 |
if (variable.name().equals(name)) { |
228 |
retList.add(variable); |
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} |
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} |
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return retList; |
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} |
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public List<LocalVariable> arguments() throws AbsentInformationException { |
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List<LocalVariable> variables = getVariables(); |
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236 |
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237 |
List<LocalVariable> retList = new ArrayList<LocalVariable>(variables.size()); |
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11277 | 238 |
Iterator<LocalVariable> iter = variables.iterator(); |
2 | 239 |
while(iter.hasNext()) { |
11277 | 240 |
LocalVariable variable = iter.next(); |
2 | 241 |
if (variable.isArgument()) { |
242 |
retList.add(variable); |
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} |
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244 |
} |
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return retList; |
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246 |
} |
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247 |
||
248 |
public byte[] bytecodes() { |
|
249 |
byte[] bytecodes = (bytecodesRef == null) ? null : |
|
51 | 250 |
bytecodesRef.get(); |
2 | 251 |
if (bytecodes == null) { |
252 |
try { |
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bytecodes = JDWP.Method.Bytecodes. |
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process(vm, declaringType, ref).bytes; |
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255 |
} catch (JDWPException exc) { |
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256 |
throw exc.toJDIException(); |
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257 |
} |
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258 |
bytecodesRef = new SoftReference<byte[]>(bytecodes); |
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259 |
} |
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260 |
/* |
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261 |
* Arrays are always modifiable, so it is a little unsafe |
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262 |
* to return the cached bytecodes directly; instead, we |
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263 |
* make a clone at the cost of using more memory. |
|
264 |
*/ |
|
51 | 265 |
return bytecodes.clone(); |
2 | 266 |
} |
267 |
||
268 |
int argSlotCount() throws AbsentInformationException { |
|
269 |
if (argSlotCount == -1) { |
|
270 |
getVariables(); |
|
271 |
} |
|
272 |
return argSlotCount; |
|
273 |
} |
|
274 |
||
275 |
private SoftLocationXRefs getLocations(SDE.Stratum stratum) { |
|
276 |
if (stratum.isJava()) { |
|
277 |
return getBaseLocations(); |
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278 |
} |
|
279 |
String stratumID = stratum.id(); |
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280 |
SoftLocationXRefs info = |
|
281 |
(softOtherLocationXRefsRef == null) ? null : |
|
51 | 282 |
softOtherLocationXRefsRef.get(); |
2 | 283 |
if (info != null && info.stratumID.equals(stratumID)) { |
284 |
return info; |
|
285 |
} |
|
286 |
||
287 |
List<Location> lineLocations = new ArrayList<Location>(); |
|
288 |
Map<Integer, List<Location>> lineMapper = new HashMap<Integer, List<Location>>(); |
|
289 |
int lowestLine = -1; |
|
290 |
int highestLine = -1; |
|
291 |
SDE.LineStratum lastLineStratum = null; |
|
292 |
SDE.Stratum baseStratum = |
|
293 |
declaringType.stratum(SDE.BASE_STRATUM_NAME); |
|
11277 | 294 |
Iterator<Location> it = getBaseLocations().lineLocations.iterator(); |
2 | 295 |
while(it.hasNext()) { |
296 |
LocationImpl loc = (LocationImpl)it.next(); |
|
297 |
int baseLineNumber = loc.lineNumber(baseStratum); |
|
298 |
SDE.LineStratum lineStratum = |
|
299 |
stratum.lineStratum(declaringType, |
|
300 |
baseLineNumber); |
|
301 |
||
302 |
if (lineStratum == null) { |
|
303 |
// location not mapped in this stratum |
|
304 |
continue; |
|
305 |
} |
|
306 |
||
307 |
int lineNumber = lineStratum.lineNumber(); |
|
308 |
||
309 |
// remove unmapped and dup lines |
|
310 |
if ((lineNumber != -1) && |
|
311 |
(!lineStratum.equals(lastLineStratum))) { |
|
312 |
lastLineStratum = lineStratum; |
|
313 |
||
314 |
// Remember the largest/smallest line number |
|
315 |
if (lineNumber > highestLine) { |
|
316 |
highestLine = lineNumber; |
|
317 |
} |
|
318 |
if ((lineNumber < lowestLine) || (lowestLine == -1)) { |
|
319 |
lowestLine = lineNumber; |
|
320 |
} |
|
321 |
||
322 |
loc.addStratumLineInfo( |
|
323 |
new StratumLineInfo(stratumID, |
|
324 |
lineNumber, |
|
325 |
lineStratum.sourceName(), |
|
326 |
lineStratum.sourcePath())); |
|
327 |
||
328 |
// Add to the location list |
|
329 |
lineLocations.add(loc); |
|
330 |
||
331 |
// Add to the line -> locations map |
|
25522
10d789df41bb
8049892: Replace uses of 'new Integer()' with appropriate alternative across core classes
prr
parents:
14342
diff
changeset
|
332 |
Integer key = lineNumber; |
2 | 333 |
List<Location> mappedLocs = lineMapper.get(key); |
334 |
if (mappedLocs == null) { |
|
335 |
mappedLocs = new ArrayList<Location>(1); |
|
336 |
lineMapper.put(key, mappedLocs); |
|
337 |
} |
|
338 |
mappedLocs.add(loc); |
|
339 |
} |
|
340 |
} |
|
341 |
||
342 |
info = new SoftLocationXRefs(stratumID, |
|
343 |
lineMapper, lineLocations, |
|
344 |
lowestLine, highestLine); |
|
345 |
softOtherLocationXRefsRef = new SoftReference<SoftLocationXRefs>(info); |
|
346 |
return info; |
|
347 |
} |
|
348 |
||
349 |
private SoftLocationXRefs getBaseLocations() { |
|
350 |
SoftLocationXRefs info = (softBaseLocationXRefsRef == null) ? null : |
|
51 | 351 |
softBaseLocationXRefsRef.get(); |
2 | 352 |
if (info != null) { |
353 |
return info; |
|
354 |
} |
|
355 |
||
356 |
JDWP.Method.LineTable lntab = null; |
|
357 |
try { |
|
358 |
lntab = JDWP.Method.LineTable.process(vm, declaringType, ref); |
|
359 |
} catch (JDWPException exc) { |
|
360 |
/* |
|
361 |
* Note: the absent info error shouldn't happen here |
|
362 |
* because the first and last index are always available. |
|
363 |
*/ |
|
364 |
throw exc.toJDIException(); |
|
365 |
} |
|
366 |
||
367 |
int count = lntab.lines.length; |
|
368 |
||
369 |
List<Location> lineLocations = new ArrayList<Location>(count); |
|
370 |
Map<Integer, List<Location>>lineMapper = new HashMap<Integer, List<Location>>(); |
|
371 |
int lowestLine = -1; |
|
372 |
int highestLine = -1; |
|
373 |
for (int i = 0; i < count; i++) { |
|
374 |
long bci = lntab.lines[i].lineCodeIndex; |
|
375 |
int lineNumber = lntab.lines[i].lineNumber; |
|
376 |
||
377 |
/* |
|
378 |
* Some compilers will point multiple consecutive |
|
379 |
* lines at the same location. We need to choose |
|
380 |
* one of them so that we can consistently map back |
|
381 |
* and forth between line and location. So we choose |
|
382 |
* to record only the last line entry at a particular |
|
383 |
* location. |
|
384 |
*/ |
|
385 |
if ((i + 1 == count) || (bci != lntab.lines[i+1].lineCodeIndex)) { |
|
386 |
// Remember the largest/smallest line number |
|
387 |
if (lineNumber > highestLine) { |
|
388 |
highestLine = lineNumber; |
|
389 |
} |
|
390 |
if ((lineNumber < lowestLine) || (lowestLine == -1)) { |
|
391 |
lowestLine = lineNumber; |
|
392 |
} |
|
393 |
LocationImpl loc = |
|
394 |
new LocationImpl(virtualMachine(), this, bci); |
|
395 |
loc.addBaseLineInfo( |
|
396 |
new BaseLineInfo(lineNumber, declaringType)); |
|
397 |
||
398 |
// Add to the location list |
|
399 |
lineLocations.add(loc); |
|
400 |
||
401 |
// Add to the line -> locations map |
|
25522
10d789df41bb
8049892: Replace uses of 'new Integer()' with appropriate alternative across core classes
prr
parents:
14342
diff
changeset
|
402 |
Integer key = lineNumber; |
2 | 403 |
List<Location> mappedLocs = lineMapper.get(key); |
404 |
if (mappedLocs == null) { |
|
405 |
mappedLocs = new ArrayList<Location>(1); |
|
406 |
lineMapper.put(key, mappedLocs); |
|
407 |
} |
|
408 |
mappedLocs.add(loc); |
|
409 |
} |
|
410 |
} |
|
411 |
||
412 |
/* |
|
413 |
* firstIndex, lastIndex, and startLocation need to be |
|
414 |
* retrieved only once since they are strongly referenced. |
|
415 |
*/ |
|
416 |
if (location == null) { |
|
417 |
firstIndex = lntab.start; |
|
418 |
lastIndex = lntab.end; |
|
419 |
/* |
|
420 |
* The startLocation is the first one in the |
|
421 |
* location list if we have one; |
|
422 |
* otherwise, we construct a location for a |
|
423 |
* method start with no line info |
|
424 |
*/ |
|
425 |
if (count > 0) { |
|
426 |
location = lineLocations.get(0); |
|
427 |
} else { |
|
428 |
location = new LocationImpl(virtualMachine(), this, |
|
429 |
firstIndex); |
|
430 |
} |
|
431 |
} |
|
432 |
||
433 |
info = new SoftLocationXRefs(SDE.BASE_STRATUM_NAME, |
|
434 |
lineMapper, lineLocations, |
|
435 |
lowestLine, highestLine); |
|
436 |
softBaseLocationXRefsRef = new SoftReference<SoftLocationXRefs>(info); |
|
437 |
return info; |
|
438 |
} |
|
439 |
||
440 |
private List<LocalVariable> getVariables1_4() throws AbsentInformationException { |
|
441 |
JDWP.Method.VariableTable vartab = null; |
|
442 |
try { |
|
443 |
vartab = JDWP.Method.VariableTable. |
|
444 |
process(vm, declaringType, ref); |
|
445 |
} catch (JDWPException exc) { |
|
446 |
if (exc.errorCode() == JDWP.Error.ABSENT_INFORMATION) { |
|
447 |
absentVariableInformation = true; |
|
448 |
throw new AbsentInformationException(); |
|
449 |
} else { |
|
450 |
throw exc.toJDIException(); |
|
451 |
} |
|
452 |
} |
|
453 |
||
454 |
// Get the number of slots used by argument variables |
|
455 |
argSlotCount = vartab.argCnt; |
|
456 |
int count = vartab.slots.length; |
|
457 |
List<LocalVariable> variables = new ArrayList<LocalVariable>(count); |
|
458 |
for (int i=0; i<count; i++) { |
|
459 |
JDWP.Method.VariableTable.SlotInfo si = vartab.slots[i]; |
|
460 |
||
461 |
/* |
|
462 |
* Skip "this*" entries because they are never real |
|
463 |
* variables from the JLS perspective. |
|
464 |
*/ |
|
465 |
if (!si.name.startsWith("this$") && !si.name.equals("this")) { |
|
466 |
Location scopeStart = new LocationImpl(virtualMachine(), |
|
467 |
this, si.codeIndex); |
|
468 |
Location scopeEnd = |
|
469 |
new LocationImpl(virtualMachine(), this, |
|
470 |
si.codeIndex + si.length - 1); |
|
471 |
LocalVariable variable = |
|
472 |
new LocalVariableImpl(virtualMachine(), this, |
|
473 |
si.slot, scopeStart, scopeEnd, |
|
474 |
si.name, si.signature, null); |
|
475 |
// Add to the variable list |
|
476 |
variables.add(variable); |
|
477 |
} |
|
478 |
} |
|
479 |
return variables; |
|
480 |
} |
|
481 |
||
482 |
private List<LocalVariable> getVariables1() throws AbsentInformationException { |
|
483 |
||
484 |
if (!vm.canGet1_5LanguageFeatures()) { |
|
485 |
return getVariables1_4(); |
|
486 |
} |
|
487 |
||
488 |
JDWP.Method.VariableTableWithGeneric vartab = null; |
|
489 |
try { |
|
490 |
vartab = JDWP.Method.VariableTableWithGeneric. |
|
491 |
process(vm, declaringType, ref); |
|
492 |
} catch (JDWPException exc) { |
|
493 |
if (exc.errorCode() == JDWP.Error.ABSENT_INFORMATION) { |
|
494 |
absentVariableInformation = true; |
|
495 |
throw new AbsentInformationException(); |
|
496 |
} else { |
|
497 |
throw exc.toJDIException(); |
|
498 |
} |
|
499 |
} |
|
500 |
||
501 |
// Get the number of slots used by argument variables |
|
502 |
argSlotCount = vartab.argCnt; |
|
503 |
int count = vartab.slots.length; |
|
504 |
List<LocalVariable> variables = new ArrayList<LocalVariable>(count); |
|
505 |
for (int i=0; i<count; i++) { |
|
506 |
JDWP.Method.VariableTableWithGeneric.SlotInfo si = vartab.slots[i]; |
|
507 |
||
508 |
/* |
|
509 |
* Skip "this*" entries because they are never real |
|
510 |
* variables from the JLS perspective. |
|
511 |
*/ |
|
512 |
if (!si.name.startsWith("this$") && !si.name.equals("this")) { |
|
513 |
Location scopeStart = new LocationImpl(virtualMachine(), |
|
514 |
this, si.codeIndex); |
|
515 |
Location scopeEnd = |
|
516 |
new LocationImpl(virtualMachine(), this, |
|
517 |
si.codeIndex + si.length - 1); |
|
518 |
LocalVariable variable = |
|
519 |
new LocalVariableImpl(virtualMachine(), this, |
|
520 |
si.slot, scopeStart, scopeEnd, |
|
521 |
si.name, si.signature, |
|
522 |
si.genericSignature); |
|
523 |
// Add to the variable list |
|
524 |
variables.add(variable); |
|
525 |
} |
|
526 |
} |
|
527 |
return variables; |
|
528 |
} |
|
529 |
||
530 |
private List<LocalVariable> getVariables() throws AbsentInformationException { |
|
531 |
if (absentVariableInformation) { |
|
532 |
throw new AbsentInformationException(); |
|
533 |
} |
|
534 |
||
535 |
List<LocalVariable> variables = (variablesRef == null) ? null : |
|
536 |
variablesRef.get(); |
|
537 |
if (variables != null) { |
|
538 |
return variables; |
|
539 |
} |
|
540 |
variables = getVariables1(); |
|
541 |
variables = Collections.unmodifiableList(variables); |
|
542 |
variablesRef = new SoftReference<List<LocalVariable>>(variables); |
|
543 |
return variables; |
|
544 |
} |
|
545 |
} |