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