bloatsoup.
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beard%netscape.com
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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Patrick C. Beard <beard@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
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* provisions of the GPL are applicable instead of those above.
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* If you wish to allow use of your version of this file only
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* under the terms of the GPL and not to allow others to use your
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* version of this file under the NPL, indicate your decision by
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* deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the NPL or the GPL.
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*/
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import java.io.*;
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import java.util.*;
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public class bloatsoup {
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public static void main(String[] args) {
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if (args.length == 0) {
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System.out.println("usage: bloatsoup trace");
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System.exit(1);
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}
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for (int i = 0; i < args.length; i++) {
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cook(args[i]);
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}
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// quit the application.
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System.exit(0);
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}
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/**
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* Initially, just create a histogram of the bloat.
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*/
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static void cook(String inputName) {
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String outputName = inputName + ".html";
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try {
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PrintWriter writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outputName))));
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writer.println("<HTML>");
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Date now = new Date();
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writer.println("<TITLE>Bloat as of " + now + "</TITLE>");
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int objectCount = 0;
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long totalSize = 0;
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Hashtable types = new Hashtable();
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Histogram hist = new Histogram();
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StringTable strings = new StringTable();
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BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(inputName)));
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String line = reader.readLine();
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while (line != null) {
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if (line.startsWith("0x")) {
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String addr = strings.intern(line.substring(0, 10));
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String name = strings.intern(line.substring(line.indexOf('<') + 1, line.indexOf('>')));
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int size;
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try {
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String str = line.substring(line.indexOf('(') + 1, line.indexOf(')')).trim();
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size = Integer.parseInt(str);
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} catch (NumberFormatException nfe) {
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size = 0;
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}
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String key = strings.intern(name + "_" + size);
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Type type = (Type) types.get(key);
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if (type == null) {
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type = new Type(name, size);
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types.put(key, type);
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}
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hist.record(type);
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++objectCount;
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totalSize += size;
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}
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line = reader.readLine();
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}
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reader.close();
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// print bloat summary.
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writer.println("<H2>Bloat Summary</H2>");
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writer.println("total object count = " + objectCount + "<BR>");
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writer.println("total memory bloat = " + totalSize + " bytes.<BR>");
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// print histogram sorted by count * size.
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writer.println("<H2>Bloat Histogram</H2>");
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leaksoup.printHistogram(writer, hist);
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writer.close();
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} catch (Exception e) {
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e.printStackTrace(System.err);
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}
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}
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/**
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* Simply replaces instances of '<' with "<" and '>' with ">".
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*/
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static String quoteTags(String str) {
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int length = str.length();
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StringBuffer buf = new StringBuffer(length);
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for (int i = 0; i < length; ++i) {
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char ch = str.charAt(i);
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switch (ch) {
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case '<':
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buf.append("<");
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break;
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case '>':
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buf.append(">");
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break;
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default:
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buf.append(ch);
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break;
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}
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}
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return buf.toString();
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}
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}
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