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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/com/sun/tools/jdi/LocationImpl.java (1 of 18352 files). Show all

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java/pkg/com/sun/tools/jdi/LocationImpl.java+227−0
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1+/*
2+ * Copyright (c) 1998, 2004, 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. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package com.sun.tools.jdi;
27+
28+import com.sun.jdi.*;
29+
30+import java.util.*;
31+
32+public class LocationImpl extends MirrorImpl implements Location {
33+ private final ReferenceTypeImpl declaringType;
34+ private Method method;
35+ private long methodRef;
36+ private long codeIndex;
37+ private LineInfo baseLineInfo = null;
38+ private LineInfo otherLineInfo = null;
39+
40+ LocationImpl(VirtualMachine vm,
41+ Method method, long codeIndex) {
42+ super(vm);
43+
44+ this.method = method;
45+ this.codeIndex = method.isNative()? -1 : codeIndex;
46+ this.declaringType = (ReferenceTypeImpl)method.declaringType();
47+ }
48+
49+ /*
50+ * This constructor allows lazy creation of the method mirror. This
51+ * can be a performance savings if the method mirror does not yet
52+ * exist.
53+ */
54+ LocationImpl(VirtualMachine vm, ReferenceTypeImpl declaringType,
55+ long methodRef, long codeIndex) {
56+ super(vm);
57+
58+ this.method = null;
59+ this.codeIndex = codeIndex;
60+ this.declaringType = declaringType;
61+ this.methodRef = methodRef;
62+ }
63+
64+ public boolean equals(Object obj) {
65+ if ((obj != null) && (obj instanceof Location)) {
66+ Location other = (Location)obj;
67+ return (method().equals(other.method())) &&
68+ (codeIndex() == other.codeIndex()) &&
69+ super.equals(obj);
70+ } else {
71+ return false;
72+ }
73+ }
74+
75+ public int hashCode() {
76+ /*
77+ * TO DO: better hash code?
78+ */
79+ return method().hashCode() + (int)codeIndex();
80+ }
81+
82+ public int compareTo(Location object) {
83+ LocationImpl other = (LocationImpl)object;
84+ int rc = method().compareTo(other.method());
85+ if (rc == 0) {
86+ long diff = codeIndex() - other.codeIndex();
87+ if (diff < 0)
88+ return -1;
89+ else if (diff > 0)
90+ return 1;
91+ else
92+ return 0;
93+ }
94+ return rc;
95+ }
96+
97+ public ReferenceType declaringType() {
98+ return declaringType;
99+ }
100+
101+ public Method method() {
102+ if (method == null) {
103+ method = declaringType.getMethodMirror(methodRef);
104+ if (method.isNative()) {
105+ codeIndex = -1;
106+ }
107+ }
108+ return method;
109+ }
110+
111+ public long codeIndex() {
112+ method(); // be sure information is up-to-date
113+ return codeIndex;
114+ }
115+
116+ LineInfo getBaseLineInfo(SDE.Stratum stratum) {
117+ LineInfo lineInfo;
118+
119+ /* check if there is cached info to use */
120+ if (baseLineInfo != null) {
121+ return baseLineInfo;
122+ }
123+
124+ /* compute the line info */
125+ MethodImpl methodImpl = (MethodImpl)method();
126+ lineInfo = methodImpl.codeIndexToLineInfo(stratum,
127+ codeIndex());
128+
129+ /* cache it */
130+ addBaseLineInfo(lineInfo);
131+
132+ return lineInfo;
133+ }
134+
135+ LineInfo getLineInfo(SDE.Stratum stratum) {
136+ LineInfo lineInfo;
137+
138+ /* base stratum is done slighly differently */
139+ if (stratum.isJava()) {
140+ return getBaseLineInfo(stratum);
141+ }
142+
143+ /* check if there is cached info to use */
144+ lineInfo = otherLineInfo; // copy because of concurrency
145+ if (lineInfo != null &&
146+ stratum.id().equals(lineInfo.liStratum())) {
147+ return lineInfo;
148+ }
149+
150+ int baseLineNumber = lineNumber(SDE.BASE_STRATUM_NAME);
151+ SDE.LineStratum lineStratum =
152+ stratum.lineStratum(declaringType, baseLineNumber);
153+
154+ if (lineStratum != null && lineStratum.lineNumber() != -1) {
155+ lineInfo = new StratumLineInfo(stratum.id(),
156+ lineStratum.lineNumber(),
157+ lineStratum.sourceName(),
158+ lineStratum.sourcePath());
159+ } else {
160+ /* find best match */
161+ MethodImpl methodImpl = (MethodImpl)method();
162+ lineInfo = methodImpl.codeIndexToLineInfo(stratum,
163+ codeIndex());
164+ }
165+
166+ /* cache it */
167+ addStratumLineInfo(lineInfo);
168+
169+ return lineInfo;
170+ }
171+
172+ void addStratumLineInfo(LineInfo lineInfo) {
173+ otherLineInfo = lineInfo;
174+ }
175+
176+ void addBaseLineInfo(LineInfo lineInfo) {
177+ baseLineInfo = lineInfo;
178+ }
179+
180+ public String sourceName() throws AbsentInformationException {
181+ return sourceName(vm.getDefaultStratum());
182+ }
183+
184+ public String sourceName(String stratumID)
185+ throws AbsentInformationException {
186+ return sourceName(declaringType.stratum(stratumID));
187+ }
188+
189+ String sourceName(SDE.Stratum stratum)
190+ throws AbsentInformationException {
191+ return getLineInfo(stratum).liSourceName();
192+ }
193+
194+ public String sourcePath() throws AbsentInformationException {
195+ return sourcePath(vm.getDefaultStratum());
196+ }
197+
198+ public String sourcePath(String stratumID)
199+ throws AbsentInformationException {
200+ return sourcePath(declaringType.stratum(stratumID));
201+ }
202+
203+ String sourcePath(SDE.Stratum stratum)
204+ throws AbsentInformationException {
205+ return getLineInfo(stratum).liSourcePath();
206+ }
207+
208+ public int lineNumber() {
209+ return lineNumber(vm.getDefaultStratum());
210+ }
211+
212+ public int lineNumber(String stratumID) {
213+ return lineNumber(declaringType.stratum(stratumID));
214+ }
215+
216+ int lineNumber(SDE.Stratum stratum) {
217+ return getLineInfo(stratum).liLineNumber();
218+ }
219+
220+ public String toString() {
221+ if (lineNumber() == -1) {
222+ return method().toString() + "+" + codeIndex();
223+ } else {
224+ return declaringType().name() + ":" + lineNumber();
225+ }
226+ }
227+}