/*
* 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.File;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.Enumeration;
/**
* DexFile tests (Dalvik-specific).
*/
public class Main {
private static final String CLASS_PATH = System.getenv("DEX_LOCATION") + "/071-dexfile-ex.jar";
private static final String ODEX_DIR = System.getenv("DEX_LOCATION");
private static final String ODEX_ALT = "/tmp";
private static final String LIB_DIR = "/nowhere/nothing/";
private static final String getOdexDir() {
return new File(ODEX_DIR).isDirectory() ? ODEX_DIR : ODEX_ALT;
}
/**
* Prep the environment then run the test.
*/
public static void main(String[] args) throws Exception {
/*
* Create a sub-process to see if the ProcessManager wait
* interferes with the dexopt invocation wait.
*
* /dev/random never hits EOF, so we're sure that we'll still
* be waiting for the process to complete. On the device it
* stops pretty quickly (which means the child won't be
* spinning).
*/
ProcessBuilder pb = new ProcessBuilder("cat", "/dev/random");
Process p = pb.start();
testDexClassLoader();
testDexFile();
// shouldn't be necessary, but it's good to be tidy
p.destroy();
// let the ProcessManager's daemon thread finish before we shut down
// (avoids the occasional segmentation fault)
Thread.sleep(500);
System.out.println("done");
}
/**
* Create a class loader, explicitly specifying the source DEX and
* the location for the optimized DEX.
*/
private static void testDexClassLoader() throws Exception {
ClassLoader dexClassLoader = getDexClassLoader();
Class Another = dexClassLoader.loadClass("Another");
Object another = Another.newInstance();
// not expected to work; just exercises the call
dexClassLoader.getResource("nonexistent");
}
/*
* Create an instance of DexClassLoader. The test harness doesn't
* have visibility into dalvik.system.*, so we do this through
* reflection.
*/
private static ClassLoader getDexClassLoader() throws Exception {
ClassLoader classLoader = Main.class.getClassLoader();
Class DexClassLoader = classLoader.loadClass("dalvik.system.DexClassLoader");
Constructor DexClassLoader_init = DexClassLoader.getConstructor(String.class,
String.class,
String.class,
ClassLoader.class);
// create an instance, using the path we found
return (ClassLoader) DexClassLoader_init.newInstance(CLASS_PATH, getOdexDir(), LIB_DIR, classLoader);
}
private static void testDexFile() throws Exception {
ClassLoader classLoader = Main.class.getClassLoader();
Class DexFile = classLoader.loadClass("dalvik.system.DexFile");
Method DexFile_loadDex = DexFile.getMethod("loadDex",
String.class,
String.class,
Integer.TYPE);
Method DexFile_entries = DexFile.getMethod("entries");
Object dexFile = DexFile_loadDex.invoke(null, CLASS_PATH, null, 0);
Enumeration<String> e = (Enumeration<String>) DexFile_entries.invoke(dexFile);
while (e.hasMoreElements()) {
String className = e.nextElement();
System.out.println(className);
}
}
}