Source Code Cross Referenced for AllocMemoryResultsDiff.java in  » IDE-Netbeans » cvsclient » org » netbeans » lib » profiler » results » memory » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » cvsclient » org.netbeans.lib.profiler.results.memory 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003:         *
004:         * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005:         *
006:         * The contents of this file are subject to the terms of either the GNU
007:         * General Public License Version 2 only ("GPL") or the Common
008:         * Development and Distribution License("CDDL") (collectively, the
009:         * "License"). You may not use this file except in compliance with the
010:         * License. You can obtain a copy of the License at
011:         * http://www.netbeans.org/cddl-gplv2.html
012:         * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013:         * specific language governing permissions and limitations under the
014:         * License.  When distributing the software, include this License Header
015:         * Notice in each file and include the License file at
016:         * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this
017:         * particular file as subject to the "Classpath" exception as provided
018:         * by Sun in the GPL Version 2 section of the License file that
019:         * accompanied this code. If applicable, add the following below the
020:         * License Header, with the fields enclosed by brackets [] replaced by
021:         * your own identifying information:
022:         * "Portions Copyrighted [year] [name of copyright owner]"
023:         *
024:         * Contributor(s):
025:         * The Original Software is NetBeans. The Initial Developer of the Original
026:         * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
027:         * Microsystems, Inc. All Rights Reserved.
028:         *
029:         * If you wish your version of this file to be governed by only the CDDL
030:         * or only the GPL Version 2, indicate your decision by adding
031:         * "[Contributor] elects to include this software in this distribution
032:         * under the [CDDL or GPL Version 2] license." If you do not indicate a
033:         * single choice of license, a recipient has the option to distribute
034:         * your version of this file under either the CDDL, the GPL Version 2 or
035:         * to extend the choice of license to its licensees as provided above.
036:         * However, if you add GPL Version 2 code and therefore, elected the GPL
037:         * Version 2 license, then the option applies only if the new code is
038:         * made subject to such option by the copyright holder.
039:         */
040:
041:        package org.netbeans.lib.profiler.results.memory;
042:
043:        import java.io.DataInputStream;
044:        import java.io.DataOutputStream;
045:        import java.io.IOException;
046:        import java.util.ArrayList;
047:        import java.util.HashMap;
048:        import java.util.Iterator;
049:        import java.util.Map;
050:
051:        /**
052:         * Class representing a difference between two snapshots,
053:         * diffing only values available in AllocMemoryResultsSnapshot
054:         *
055:         * @author Tomas Hurka
056:         * @author Jiri Sedlacek
057:         */
058:        public class AllocMemoryResultsDiff extends AllocMemoryResultsSnapshot {
059:            //~ Instance fields ----------------------------------------------------------------------------------------------------------
060:
061:            private String[] classNames;
062:            private int[] objectsCounts;
063:            private long[] objectsSizePerClass;
064:            private int nClasses;
065:            private long maxObjectsSizePerClassDiff;
066:            private long minObjectsSizePerClassDiff;
067:
068:            //~ Constructors -------------------------------------------------------------------------------------------------------------
069:
070:            public AllocMemoryResultsDiff(AllocMemoryResultsSnapshot snapshot1,
071:                    AllocMemoryResultsSnapshot snapshot2) {
072:                computeDiff(snapshot1, snapshot2);
073:            }
074:
075:            //~ Methods ------------------------------------------------------------------------------------------------------------------
076:
077:            public long getBeginTime() {
078:                return -1;
079:            }
080:
081:            public String getClassName(int classId) {
082:                return null;
083:            }
084:
085:            public String[] getClassNames() {
086:                return classNames;
087:            }
088:
089:            public JMethodIdTable getJMethodIdTable() {
090:                return null;
091:            }
092:
093:            public long getMaxObjectsSizePerClassDiff() {
094:                return maxObjectsSizePerClassDiff;
095:            }
096:
097:            public long getMinObjectsSizePerClassDiff() {
098:                return minObjectsSizePerClassDiff;
099:            }
100:
101:            public int getNProfiledClasses() {
102:                return nClasses;
103:            }
104:
105:            public int[] getObjectsCounts() {
106:                return objectsCounts;
107:            }
108:
109:            public long[] getObjectsSizePerClass() {
110:                return objectsSizePerClass;
111:            }
112:
113:            public long getTimeTaken() {
114:                return -1;
115:            }
116:
117:            public boolean containsStacks() {
118:                return false;
119:            }
120:
121:            public PresoObjAllocCCTNode createPresentationCCT(int classId,
122:                    boolean dontShowZeroLiveObjAllocPaths) {
123:                return null;
124:            }
125:
126:            public void readFromStream(DataInputStream in) throws IOException {
127:                throw new UnsupportedOperationException(
128:                        "Persistence not supported for snapshot comparison"); // NOI18N
129:            }
130:
131:            //---- Serialization support
132:            public void writeToStream(DataOutputStream out) throws IOException {
133:                throw new UnsupportedOperationException(
134:                        "Persistence not supported for snapshot comparison"); // NOI18N
135:            }
136:
137:            protected PresoObjAllocCCTNode createPresentationCCT(
138:                    RuntimeMemoryCCTNode rootNode, int classId,
139:                    boolean dontShowZeroLiveObjAllocPaths) {
140:                return null;
141:            }
142:
143:            private void computeDiff(AllocMemoryResultsSnapshot snapshot1,
144:                    AllocMemoryResultsSnapshot snapshot2) {
145:                // must detect the minimum, same approach as in SnapshotAllocResultsPanel.fetchResultsFromSnapshot()
146:                int s1nClasses = Math.min(snapshot1.getNProfiledClasses(),
147:                        snapshot1.getObjectsCounts().length);
148:                s1nClasses = Math.min(s1nClasses, snapshot1
149:                        .getObjectsSizePerClass().length);
150:
151:                int s2nClasses = Math.min(snapshot2.getNProfiledClasses(),
152:                        snapshot2.getObjectsCounts().length);
153:                s2nClasses = Math.min(s2nClasses, snapshot2
154:                        .getObjectsSizePerClass().length);
155:
156:                // temporary cache for creating diff
157:                HashMap classNamesIdxMap = new HashMap(s1nClasses);
158:                ArrayList objCountsArr = new ArrayList(s1nClasses);
159:                ArrayList objSizesArr = new ArrayList(s1nClasses);
160:
161:                // fill the cache with negative values from snapshot1
162:                String[] s1ClassNames = snapshot1.getClassNames();
163:                int[] s1ObjectsCount = snapshot1.getObjectsCounts();
164:                long[] s1ObjectsSizes = snapshot1.getObjectsSizePerClass();
165:
166:                for (int i = 0; i < s1nClasses; i++) {
167:                    Integer classIdx = (Integer) classNamesIdxMap
168:                            .get(s1ClassNames[i]);
169:
170:                    if (classIdx != null) { // duplicate classname - add objCountsArr and objSizesArr to original classname
171:
172:                        int index = classIdx.intValue();
173:                        Integer objCount = (Integer) objCountsArr.get(index);
174:                        Long objSize = (Long) objSizesArr.get(index);
175:
176:                        objCountsArr.set(index, new Integer(objCount.intValue()
177:                                - s1ObjectsCount[i]));
178:                        objSizesArr.set(index, new Long(objSize.longValue()
179:                                - s1ObjectsSizes[i]));
180:                    } else {
181:                        classNamesIdxMap.put(s1ClassNames[i], new Integer(
182:                                objCountsArr.size()));
183:                        objCountsArr.add(new Integer(0 - s1ObjectsCount[i]));
184:                        objSizesArr.add(new Long(0 - s1ObjectsSizes[i]));
185:                    }
186:                }
187:
188:                // create diff using values from snapshot2
189:                String[] s2ClassNames = snapshot2.getClassNames();
190:                int[] s2ObjectsCount = snapshot2.getObjectsCounts();
191:                long[] s2ObjectsSizes = snapshot2.getObjectsSizePerClass();
192:
193:                for (int i = 0; i < s2nClasses; i++) {
194:                    String className = s2ClassNames[i];
195:                    int objectsCount = s2ObjectsCount[i];
196:                    long objectsSize = s2ObjectsSizes[i];
197:
198:                    Integer classIdx = (Integer) classNamesIdxMap
199:                            .get(className);
200:                    int classIndex;
201:
202:                    if (classIdx != null) {
203:                        // class already present in snapshot1
204:                        classIndex = classIdx.intValue();
205:
206:                        if ((objectsCount != 0)
207:                                || (((Integer) objCountsArr.get(classIndex))
208:                                        .intValue() != 0)) { // Do not add classes not displayed in compared snapshots (zero instances number)
209:                            objCountsArr.set(classIndex, new Integer(
210:                                    ((Integer) objCountsArr.get(classIndex))
211:                                            .intValue()
212:                                            + objectsCount));
213:                            objSizesArr.set(classIndex, new Long(
214:                                    ((Long) objSizesArr.get(classIndex))
215:                                            .longValue()
216:                                            + objectsSize));
217:                        } else {
218:                            classNamesIdxMap.remove(className); // Remove classname that should not be displayed
219:                        }
220:                    } else {
221:                        // class not present in snapshot1
222:                        if (objectsCount != 0) { // Do not add classes not displayed in compared snapshots (zero instances number)
223:                            classNamesIdxMap.put(className, new Integer(
224:                                    objCountsArr.size()));
225:                            objCountsArr.add(new Integer(objectsCount));
226:                            objSizesArr.add(new Long(objectsSize));
227:                        }
228:                    }
229:                }
230:
231:                // move the diff to instance variables
232:                nClasses = classNamesIdxMap.size();
233:                classNames = new String[nClasses];
234:                objectsCounts = new int[nClasses];
235:                objectsSizePerClass = new long[nClasses];
236:                minObjectsSizePerClassDiff = Long.MAX_VALUE;
237:                maxObjectsSizePerClassDiff = Long.MIN_VALUE;
238:
239:                Iterator classNamesIter = classNamesIdxMap.entrySet()
240:                        .iterator();
241:                int index = 0;
242:
243:                while (classNamesIter.hasNext()) {
244:                    Map.Entry entry = (Map.Entry) classNamesIter.next();
245:                    String className = (String) entry.getKey();
246:                    int classIndex = ((Integer) entry.getValue()).intValue();
247:
248:                    classNames[index] = className;
249:                    objectsCounts[index] = ((Integer) objCountsArr
250:                            .get(classIndex)).intValue();
251:                    objectsSizePerClass[index] = ((Long) objSizesArr
252:                            .get(classIndex)).longValue();
253:
254:                    minObjectsSizePerClassDiff = Math.min(
255:                            minObjectsSizePerClassDiff,
256:                            objectsSizePerClass[index]);
257:                    maxObjectsSizePerClassDiff = Math.max(
258:                            maxObjectsSizePerClassDiff,
259:                            objectsSizePerClass[index]);
260:
261:                    index++;
262:                }
263:
264:                if ((minObjectsSizePerClassDiff > 0)
265:                        && (maxObjectsSizePerClassDiff > 0)) {
266:                    minObjectsSizePerClassDiff = 0;
267:                } else if ((minObjectsSizePerClassDiff < 0)
268:                        && (maxObjectsSizePerClassDiff < 0)) {
269:                    maxObjectsSizePerClassDiff = 0;
270:                }
271:            }
272:        }
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