--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/jdk.jdi/share/classes/com/sun/tools/jdi/LocationImpl.java Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,227 @@
+/*
+ * Copyright (c) 1998, 2004, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package com.sun.tools.jdi;
+
+import com.sun.jdi.*;
+
+import java.util.*;
+
+public class LocationImpl extends MirrorImpl implements Location {
+ private final ReferenceTypeImpl declaringType;
+ private Method method;
+ private long methodRef;
+ private long codeIndex;
+ private LineInfo baseLineInfo = null;
+ private LineInfo otherLineInfo = null;
+
+ LocationImpl(VirtualMachine vm,
+ Method method, long codeIndex) {
+ super(vm);
+
+ this.method = method;
+ this.codeIndex = method.isNative()? -1 : codeIndex;
+ this.declaringType = (ReferenceTypeImpl)method.declaringType();
+ }
+
+ /*
+ * This constructor allows lazy creation of the method mirror. This
+ * can be a performance savings if the method mirror does not yet
+ * exist.
+ */
+ LocationImpl(VirtualMachine vm, ReferenceTypeImpl declaringType,
+ long methodRef, long codeIndex) {
+ super(vm);
+
+ this.method = null;
+ this.codeIndex = codeIndex;
+ this.declaringType = declaringType;
+ this.methodRef = methodRef;
+ }
+
+ public boolean equals(Object obj) {
+ if ((obj != null) && (obj instanceof Location)) {
+ Location other = (Location)obj;
+ return (method().equals(other.method())) &&
+ (codeIndex() == other.codeIndex()) &&
+ super.equals(obj);
+ } else {
+ return false;
+ }
+ }
+
+ public int hashCode() {
+ /*
+ * TO DO: better hash code?
+ */
+ return method().hashCode() + (int)codeIndex();
+ }
+
+ public int compareTo(Location object) {
+ LocationImpl other = (LocationImpl)object;
+ int rc = method().compareTo(other.method());
+ if (rc == 0) {
+ long diff = codeIndex() - other.codeIndex();
+ if (diff < 0)
+ return -1;
+ else if (diff > 0)
+ return 1;
+ else
+ return 0;
+ }
+ return rc;
+ }
+
+ public ReferenceType declaringType() {
+ return declaringType;
+ }
+
+ public Method method() {
+ if (method == null) {
+ method = declaringType.getMethodMirror(methodRef);
+ if (method.isNative()) {
+ codeIndex = -1;
+ }
+ }
+ return method;
+ }
+
+ public long codeIndex() {
+ method(); // be sure information is up-to-date
+ return codeIndex;
+ }
+
+ LineInfo getBaseLineInfo(SDE.Stratum stratum) {
+ LineInfo lineInfo;
+
+ /* check if there is cached info to use */
+ if (baseLineInfo != null) {
+ return baseLineInfo;
+ }
+
+ /* compute the line info */
+ MethodImpl methodImpl = (MethodImpl)method();
+ lineInfo = methodImpl.codeIndexToLineInfo(stratum,
+ codeIndex());
+
+ /* cache it */
+ addBaseLineInfo(lineInfo);
+
+ return lineInfo;
+ }
+
+ LineInfo getLineInfo(SDE.Stratum stratum) {
+ LineInfo lineInfo;
+
+ /* base stratum is done slighly differently */
+ if (stratum.isJava()) {
+ return getBaseLineInfo(stratum);
+ }
+
+ /* check if there is cached info to use */
+ lineInfo = otherLineInfo; // copy because of concurrency
+ if (lineInfo != null &&
+ stratum.id().equals(lineInfo.liStratum())) {
+ return lineInfo;
+ }
+
+ int baseLineNumber = lineNumber(SDE.BASE_STRATUM_NAME);
+ SDE.LineStratum lineStratum =
+ stratum.lineStratum(declaringType, baseLineNumber);
+
+ if (lineStratum != null && lineStratum.lineNumber() != -1) {
+ lineInfo = new StratumLineInfo(stratum.id(),
+ lineStratum.lineNumber(),
+ lineStratum.sourceName(),
+ lineStratum.sourcePath());
+ } else {
+ /* find best match */
+ MethodImpl methodImpl = (MethodImpl)method();
+ lineInfo = methodImpl.codeIndexToLineInfo(stratum,
+ codeIndex());
+ }
+
+ /* cache it */
+ addStratumLineInfo(lineInfo);
+
+ return lineInfo;
+ }
+
+ void addStratumLineInfo(LineInfo lineInfo) {
+ otherLineInfo = lineInfo;
+ }
+
+ void addBaseLineInfo(LineInfo lineInfo) {
+ baseLineInfo = lineInfo;
+ }
+
+ public String sourceName() throws AbsentInformationException {
+ return sourceName(vm.getDefaultStratum());
+ }
+
+ public String sourceName(String stratumID)
+ throws AbsentInformationException {
+ return sourceName(declaringType.stratum(stratumID));
+ }
+
+ String sourceName(SDE.Stratum stratum)
+ throws AbsentInformationException {
+ return getLineInfo(stratum).liSourceName();
+ }
+
+ public String sourcePath() throws AbsentInformationException {
+ return sourcePath(vm.getDefaultStratum());
+ }
+
+ public String sourcePath(String stratumID)
+ throws AbsentInformationException {
+ return sourcePath(declaringType.stratum(stratumID));
+ }
+
+ String sourcePath(SDE.Stratum stratum)
+ throws AbsentInformationException {
+ return getLineInfo(stratum).liSourcePath();
+ }
+
+ public int lineNumber() {
+ return lineNumber(vm.getDefaultStratum());
+ }
+
+ public int lineNumber(String stratumID) {
+ return lineNumber(declaringType.stratum(stratumID));
+ }
+
+ int lineNumber(SDE.Stratum stratum) {
+ return getLineInfo(stratum).liLineNumber();
+ }
+
+ public String toString() {
+ if (lineNumber() == -1) {
+ return method().toString() + "+" + codeIndex();
+ } else {
+ return declaringType().name() + ":" + lineNumber();
+ }
+ }
+}