tools/preload/PrintHtmlDiff.java

   1 /*
   2  * Copyright (C) 2009 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 import java.io.IOException;
  18 import java.io.FileReader;
  19 import java.io.BufferedReader;
  20 import java.io.PrintStream;
  21 import java.util.Set;
  22 import java.util.TreeSet;
  23 import java.util.HashSet;
  24 import java.util.Iterator;
  25
  26 /**
  27  * Prints HTML containing removed and added files.
  28  */
  29 public class PrintHtmlDiff {
  30
  31     private static final String OLD_PRELOADED_CLASSES
  32             = "old-preloaded-classes";
  33
  34     public static void main(String[] args) throws IOException,
  35             ClassNotFoundException {
  36         Root root = Root.fromFile(args[0]);
  37
  38         BufferedReader oldClasses = new BufferedReader(
  39             new FileReader(OLD_PRELOADED_CLASSES));
  40
  41         // Classes loaded implicitly by the zygote.
  42         Set<LoadedClass> zygote = new HashSet<LoadedClass>();
  43         for (Proc proc : root.processes.values()) {
  44             if (proc.name.equals("zygote")) {
  45                 for (Operation op : proc.operations) {
  46                     zygote.add(op.loadedClass);
  47                 }
  48                 break;
  49             }
  50         }
  51
  52         Set<LoadedClass> removed = new TreeSet<LoadedClass>();
  53         Set<LoadedClass> added = new TreeSet<LoadedClass>();
  54
  55         for (LoadedClass loadedClass : root.loadedClasses.values()) {
  56             if (loadedClass.preloaded && !zygote.contains(loadedClass)) {
  57                 added.add(loadedClass);
  58             }
  59         }
  60
  61         String line;
  62         while ((line = oldClasses.readLine()) != null) {
  63             line = line.trim();
  64             LoadedClass clazz = root.loadedClasses.get(line);
  65             if (clazz != null) {
  66                 added.remove(clazz);
  67                 if (!clazz.preloaded) removed.add(clazz);
  68             }
  69         }
  70
  71         PrintStream out = System.out;
  72
  73         out.println("<html><body>");
  74         out.println("<style>");
  75         out.println("a, th, td, h2 { font-family: arial }");
  76         out.println("th, td { font-size: small }");
  77         out.println("</style>");
  78         out.println("<script src=\"sorttable.js\"></script>");
  79         out.println("<p><a href=\"#removed\">Removed</a>");
  80         out.println("<a name=\"added\"/><h2>Added</h2>");
  81         printTable(out, root.baseline, added);
  82         out.println("<a name=\"removed\"/><h2>Removed</h2>");
  83         printTable(out, root.baseline, removed);
  84         out.println("</body></html>");
  85     }
  86
  87     static void printTable(PrintStream out, MemoryUsage baseline,
  88             Iterable<LoadedClass> classes) {
  89         out.println("<table border=\"1\" cellpadding=\"5\""
  90                 + " class=\"sortable\">");
  91
  92         out.println("<thead><tr>");
  93         out.println("<th>Name</th>");
  94         out.println("<th>Load Time (us)</th>");
  95         out.println("<th>Loaded By</th>");
  96         out.println("<th>Heap (B)</th>");
  97         out.println("<th>Pages</th>");
  98         out.println("</tr></thead>");
  99
 100         for (LoadedClass clazz : classes) {
 101             out.println("<tr>");
 102             out.println("<td>" + clazz.name + "</td>");
 103             out.println("<td>" + clazz.medianTimeMicros() + "</td>");
 104
 105             out.println("<td>");
 106             Set<String> procNames = new TreeSet<String>();
 107             for (Operation op : clazz.loads) procNames.add(op.process.name);
 108             for (Operation op : clazz.initializations) {
 109                 procNames.add(op.process.name);
 110             }
 111             if (procNames.size() <= 3) {
 112                 for (String name : procNames) {
 113                     out.print(name + "<br/>");
 114                 }
 115             } else {
 116                 Iterator<String> i = procNames.iterator();
 117                 out.print(i.next() + "<br/>");
 118                 out.print(i.next() + "<br/>");
 119                 out.print("...and " + (procNames.size() - 2)
 120                         + " others.");
 121             }
 122             out.println("</td>");
 123
 124             if (clazz.memoryUsage.isAvailable()) {
 125                 MemoryUsage subtracted
 126                         = clazz.memoryUsage.subtract(baseline);
 127
 128                 out.println("<td>" + (subtracted.javaHeapSize()
 129                         + subtracted.nativeHeapSize) + "</td>");
 130                 out.println("<td>" + subtracted.totalPages() + "</td>");
 131             } else {
 132                 for (int i = 0; i < 2; i++) {
 133                     out.println("<td>n/a</td>");
 134                 }
 135             }
 136
 137             out.println("</tr>");
 138         }
 139
 140         out.println("</table>");
 141     }
 142 }