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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.
*/
import java.io.IOException;
import java.io.Writer;
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;
import java.io.FileOutputStream;
import java.nio.charset.Charset;
import java.util.Set;
import java.util.TreeSet;
import java.util.List;
/**
* Writes /java/android/preloaded-classes. Also updates LoadedClass.preloaded
* fields and writes over compiled log file.
*/
public class WritePreloadedClassFile {
private static final String PRELOADED_CLASS_FILE
= "java/android/preloaded-classes";
public static void main(String[] args)
throws IOException, ClassNotFoundException {
if (args.length != 1) {
System.err.println(
"Usage: WritePreloadedClassFile [compiled log file]");
System.exit(0);
}
Root root = Root.fromFile(args[0]);
for (LoadedClass loadedClass : root.loadedClasses.values()) {
loadedClass.preloaded = false;
}
Writer out = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(PRELOADED_CLASS_FILE),
Charset.forName("US-ASCII")));
out.write("# Classes which are preloaded by " +
"com.android.internal.os.ZygoteInit.\n");
out.write("# Automatically generated by /tools/preload.\n");
out.write("# percent=" + Proc.PERCENTAGE_TO_PRELOAD + ", weight="
+ ClassRank.SEQUENCE_WEIGHT
+ ", bucket_size=" + ClassRank.BUCKET_SIZE
+ "\n");
Set<LoadedClass> highestRanked = new TreeSet<LoadedClass>();
for (Proc proc : root.processes.values()) {
List<LoadedClass> highestForProc = proc.highestRankedClasses();
System.out.println(proc.name + ": " + highestForProc.size());
for (LoadedClass loadedClass : highestForProc) {
loadedClass.preloaded = true;
}
highestRanked.addAll(highestForProc);
}
for (LoadedClass loadedClass : highestRanked) {
out.write(loadedClass.name);
out.write('\n');
}
out.close();
System.out.println(highestRanked.size()
+ " classes will be preloaded.");
// Update data to reflect LoadedClass.preloaded changes.
root.toFile(args[0]);
}
}
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