153 lines
4.6 KiB
Java
153 lines
4.6 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* One line from the loaded-classes file.
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*/
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class Record {
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/**
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* The delimiter character we use, {@code :}, conflicts with some other
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* names. In that case, manually replace the delimiter with something else.
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*/
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private static final String[] REPLACE_CLASSES = {
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"com.google.android.apps.maps:FriendService",
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"com.google.android.apps.maps\\u003AFriendService",
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"com.google.android.apps.maps:driveabout",
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"com.google.android.apps.maps\\u003Adriveabout",
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"com.google.android.apps.maps:LocationFriendService",
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"com.google.android.apps.maps\\u003ALocationFriendService",
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};
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enum Type {
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/** Start of initialization. */
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START_LOAD,
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/** End of initialization. */
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END_LOAD,
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/** Start of initialization. */
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START_INIT,
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/** End of initialization. */
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END_INIT
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}
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/** Parent process ID. */
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final int ppid;
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/** Process ID. */
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final int pid;
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/** Thread ID. */
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final int tid;
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/** Process name. */
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final String processName;
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/** Class loader pointer. */
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final int classLoader;
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/** Type of record. */
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final Type type;
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/** Name of loaded class. */
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final String className;
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/** Record time (ns). */
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final long time;
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/** Source file line# */
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int sourceLineNumber;
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/**
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* Parses a line from the loaded-classes file.
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*/
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Record(String line, int lineNum) {
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char typeChar = line.charAt(0);
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switch (typeChar) {
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case '>': type = Type.START_LOAD; break;
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case '<': type = Type.END_LOAD; break;
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case '+': type = Type.START_INIT; break;
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case '-': type = Type.END_INIT; break;
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default: throw new AssertionError("Bad line: " + line);
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}
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sourceLineNumber = lineNum;
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for (int i = 0; i < REPLACE_CLASSES.length; i+= 2) {
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line = line.replace(REPLACE_CLASSES[i], REPLACE_CLASSES[i+1]);
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}
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line = line.substring(1);
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String[] parts = line.split(":");
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ppid = Integer.parseInt(parts[0]);
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pid = Integer.parseInt(parts[1]);
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tid = Integer.parseInt(parts[2]);
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processName = decode(parts[3]).intern();
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classLoader = Integer.parseInt(parts[4]);
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className = vmTypeToLanguage(decode(parts[5])).intern();
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time = Long.parseLong(parts[6]);
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}
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/**
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* Decode any escaping that may have been written to the log line.
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*
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* Supports unicode-style escaping: \\uXXXX = character in hex
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*
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* @param rawField the field as it was written into the log
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* @result the same field with any escaped characters replaced
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*/
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String decode(String rawField) {
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String result = rawField;
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int offset = result.indexOf("\\u");
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while (offset >= 0) {
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String before = result.substring(0, offset);
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String escaped = result.substring(offset+2, offset+6);
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String after = result.substring(offset+6);
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result = String.format("%s%c%s", before, Integer.parseInt(escaped, 16), after);
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// find another but don't recurse
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offset = result.indexOf("\\u", offset + 1);
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}
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return result;
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}
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/**
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* Converts a VM-style name to a language-style name.
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*/
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String vmTypeToLanguage(String typeName) {
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// if the typename is (null), just return it as-is. This is probably in dexopt and
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// will be discarded anyway. NOTE: This corresponds to the case in dalvik/vm/oo/Class.c
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// where dvmLinkClass() returns false and we clean up and exit.
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if ("(null)".equals(typeName)) {
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return typeName;
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}
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if (!typeName.startsWith("L") || !typeName.endsWith(";") ) {
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throw new AssertionError("Bad name: " + typeName + " in line " + sourceLineNumber);
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}
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typeName = typeName.substring(1, typeName.length() - 1);
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return typeName.replace("/", ".");
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}
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}
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