1 /* 2 * Copyright (C) 2008 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 /** 18 * One line from the loaded-classes file. 19 */ 20 class Record { 21 22 /** 23 * The delimiter character we use, {@code :}, conflicts with some other 24 * names. In that case, manually replace the delimiter with something else. 25 */ 26 private static final String[] REPLACE_CLASSES = { 27 "com.google.android.apps.maps:FriendService", 28 "com.google.android.apps.maps\\u003AFriendService", 29 "com.google.android.apps.maps:driveabout", 30 "com.google.android.apps.maps\\u003Adriveabout", 31 "com.google.android.apps.maps:LocationFriendService", 32 "com.google.android.apps.maps\\u003ALocationFriendService", 33 }; 34 35 enum Type { 36 /** Start of initialization. */ 37 START_LOAD, 38 39 /** End of initialization. */ 40 END_LOAD, 41 42 /** Start of initialization. */ 43 START_INIT, 44 45 /** End of initialization. */ 46 END_INIT 47 } 48 49 /** Parent process ID. */ 50 final int ppid; 51 52 /** Process ID. */ 53 final int pid; 54 55 /** Thread ID. */ 56 final int tid; 57 58 /** Process name. */ 59 final String processName; 60 61 /** Class loader pointer. */ 62 final int classLoader; 63 64 /** Type of record. */ 65 final Type type; 66 67 /** Name of loaded class. */ 68 final String className; 69 70 /** Record time (ns). */ 71 final long time; 72 73 /** Source file line# */ 74 int sourceLineNumber; 75 76 /** 77 * Parses a line from the loaded-classes file. 78 */ Record(String line, int lineNum)79 Record(String line, int lineNum) { 80 char typeChar = line.charAt(0); 81 switch (typeChar) { 82 case '>': type = Type.START_LOAD; break; 83 case '<': type = Type.END_LOAD; break; 84 case '+': type = Type.START_INIT; break; 85 case '-': type = Type.END_INIT; break; 86 default: throw new AssertionError("Bad line: " + line); 87 } 88 89 sourceLineNumber = lineNum; 90 91 for (int i = 0; i < REPLACE_CLASSES.length; i+= 2) { 92 line = line.replace(REPLACE_CLASSES[i], REPLACE_CLASSES[i+1]); 93 } 94 95 line = line.substring(1); 96 String[] parts = line.split(":"); 97 98 ppid = Integer.parseInt(parts[0]); 99 pid = Integer.parseInt(parts[1]); 100 tid = Integer.parseInt(parts[2]); 101 102 processName = decode(parts[3]).intern(); 103 104 classLoader = Integer.parseInt(parts[4]); 105 className = vmTypeToLanguage(decode(parts[5])).intern(); 106 107 time = Long.parseLong(parts[6]); 108 } 109 110 /** 111 * Decode any escaping that may have been written to the log line. 112 * 113 * Supports unicode-style escaping: \\uXXXX = character in hex 114 * 115 * @param rawField the field as it was written into the log 116 * @result the same field with any escaped characters replaced 117 */ decode(String rawField)118 String decode(String rawField) { 119 String result = rawField; 120 int offset = result.indexOf("\\u"); 121 while (offset >= 0) { 122 String before = result.substring(0, offset); 123 String escaped = result.substring(offset+2, offset+6); 124 String after = result.substring(offset+6); 125 126 result = String.format("%s%c%s", before, Integer.parseInt(escaped, 16), after); 127 128 // find another but don't recurse 129 offset = result.indexOf("\\u", offset + 1); 130 } 131 return result; 132 } 133 134 /** 135 * Converts a VM-style name to a language-style name. 136 */ vmTypeToLanguage(String typeName)137 String vmTypeToLanguage(String typeName) { 138 // if the typename is (null), just return it as-is. This is probably in dexopt and 139 // will be discarded anyway. NOTE: This corresponds to the case in dalvik/vm/oo/Class.c 140 // where dvmLinkClass() returns false and we clean up and exit. 141 if ("(null)".equals(typeName)) { 142 return typeName; 143 } 144 145 if (!typeName.startsWith("L") || !typeName.endsWith(";") ) { 146 throw new AssertionError("Bad name: " + typeName + " in line " + sourceLineNumber); 147 } 148 149 typeName = typeName.substring(1, typeName.length() - 1); 150 return typeName.replace("/", "."); 151 } 152 } 153