Initial Contribution
diff --git a/tools/preload/WritePreloadedClassFile.java b/tools/preload/WritePreloadedClassFile.java
new file mode 100644
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--- /dev/null
+++ b/tools/preload/WritePreloadedClassFile.java
@@ -0,0 +1,87 @@
+/*
+ * 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]);
+ }
+}