Andreas Gampe | 554d7ee | 2015-09-15 08:57:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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 | package com.android.preload.actions; |
| 18 | |
| 19 | import com.android.preload.DumpData; |
| 20 | import com.android.preload.DumpTableModel; |
| 21 | import com.android.preload.Main; |
| 22 | |
| 23 | import java.awt.event.ActionEvent; |
| 24 | import java.io.File; |
| 25 | import java.io.PrintWriter; |
| 26 | import java.util.HashMap; |
| 27 | import java.util.HashSet; |
| 28 | import java.util.List; |
| 29 | import java.util.Map; |
| 30 | import java.util.Set; |
| 31 | import java.util.TreeSet; |
| 32 | import java.util.regex.Pattern; |
| 33 | |
| 34 | import javax.swing.AbstractAction; |
| 35 | import javax.swing.JFileChooser; |
| 36 | |
| 37 | /** |
| 38 | * Compute an intersection of classes from the given data. A class is in the intersection if it |
| 39 | * appears in at least the number of threshold given packages. An optional blacklist can be |
| 40 | * used to filter classes from the intersection. |
| 41 | */ |
| 42 | public class ComputeThresholdAction extends AbstractAction implements Runnable { |
| 43 | protected int threshold; |
| 44 | private Pattern blacklist; |
| 45 | private DumpTableModel dataTableModel; |
| 46 | |
| 47 | /** |
| 48 | * Create an action with the given parameters. The blacklist is a regular expression |
| 49 | * that filters classes. |
| 50 | */ |
| 51 | public ComputeThresholdAction(String name, DumpTableModel dataTableModel, int threshold, |
| 52 | String blacklist) { |
| 53 | super(name); |
| 54 | this.dataTableModel = dataTableModel; |
| 55 | this.threshold = threshold; |
| 56 | if (blacklist != null) { |
| 57 | this.blacklist = Pattern.compile(blacklist); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public void actionPerformed(ActionEvent e) { |
| 63 | List<DumpData> data = dataTableModel.getData(); |
| 64 | if (data.size() == 0) { |
| 65 | Main.getUI().showMessageDialog("No data available, please scan packages or run " |
| 66 | + "monkeys."); |
| 67 | return; |
| 68 | } |
| 69 | if (data.size() == 1) { |
| 70 | Main.getUI().showMessageDialog("Cannot compute list from only one data set, please " |
| 71 | + "scan packages or run monkeys."); |
| 72 | return; |
| 73 | } |
| 74 | |
| 75 | new Thread(this).start(); |
| 76 | } |
| 77 | |
| 78 | @Override |
| 79 | public void run() { |
| 80 | Main.getUI().showWaitDialog(); |
| 81 | |
| 82 | Map<String, Set<String>> uses = new HashMap<String, Set<String>>(); |
| 83 | for (DumpData d : dataTableModel.getData()) { |
| 84 | Main.getUI().updateWaitDialog("Merging " + d.getPackageName()); |
| 85 | updateClassUse(d.getPackageName(), uses, getBootClassPathClasses(d.getDumpData())); |
| 86 | } |
| 87 | |
| 88 | Main.getUI().updateWaitDialog("Computing thresholded set"); |
| 89 | Set<String> result = fromThreshold(uses, blacklist, threshold); |
| 90 | Main.getUI().hideWaitDialog(); |
| 91 | |
| 92 | boolean ret = Main.getUI().showConfirmDialog("Computed a set with " + result.size() |
| 93 | + " classes, would you like to save to disk?", "Save?"); |
| 94 | if (ret) { |
| 95 | JFileChooser jfc = new JFileChooser(); |
| 96 | int ret2 = jfc.showSaveDialog(Main.getUI()); |
| 97 | if (ret2 == JFileChooser.APPROVE_OPTION) { |
| 98 | File f = jfc.getSelectedFile(); |
| 99 | saveSet(result, f); |
| 100 | } |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | private Set<String> fromThreshold(Map<String, Set<String>> classUses, Pattern blacklist, |
| 105 | int threshold) { |
| 106 | TreeSet<String> ret = new TreeSet<>(); // TreeSet so it's nicely ordered by name. |
| 107 | |
| 108 | for (Map.Entry<String, Set<String>> e : classUses.entrySet()) { |
| 109 | if (e.getValue().size() >= threshold) { |
| 110 | if (blacklist == null || !blacklist.matcher(e.getKey()).matches()) { |
| 111 | ret.add(e.getKey()); |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | return ret; |
| 117 | } |
| 118 | |
| 119 | private static void updateClassUse(String pkg, Map<String, Set<String>> classUses, |
| 120 | Set<String> classes) { |
| 121 | for (String className : classes) { |
| 122 | Set<String> old = classUses.get(className); |
| 123 | if (old == null) { |
| 124 | classUses.put(className, new HashSet<String>()); |
| 125 | } |
| 126 | classUses.get(className).add(pkg); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | private static Set<String> getBootClassPathClasses(Map<String, String> source) { |
| 131 | Set<String> ret = new HashSet<>(); |
| 132 | for (Map.Entry<String, String> e : source.entrySet()) { |
| 133 | if (e.getValue() == null) { |
| 134 | ret.add(e.getKey()); |
| 135 | } |
| 136 | } |
| 137 | return ret; |
| 138 | } |
| 139 | |
| 140 | private static void saveSet(Set<String> result, File f) { |
| 141 | try { |
| 142 | PrintWriter out = new PrintWriter(f); |
| 143 | for (String s : result) { |
| 144 | out.println(s); |
| 145 | } |
| 146 | out.close(); |
| 147 | } catch (Exception e) { |
| 148 | e.printStackTrace(); |
| 149 | } |
| 150 | } |
| 151 | } |