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