1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 import java.io.File; 18 import java.io.IOException; 19 import java.lang.reflect.Constructor; 20 import java.lang.reflect.Method; 21 import java.util.Enumeration; 22 23 /** 24 * DexFile tests (Dalvik-specific). 25 */ 26 public class Main { 27 private static final String CLASS_PATH = System.getenv("DEX_LOCATION") + "/071-dexfile-ex.jar"; 28 private static final String ODEX_DIR = System.getenv("DEX_LOCATION"); 29 private static final String ODEX_ALT = "/tmp"; 30 private static final String LIB_DIR = "/nowhere/nothing/"; 31 32 private static final String getOdexDir() { 33 return new File(ODEX_DIR).isDirectory() ? ODEX_DIR : ODEX_ALT; 34 } 35 36 /** 37 * Prep the environment then run the test. 38 */ 39 public static void main(String[] args) throws Exception { 40 /* 41 * Create a sub-process to see if the ProcessManager wait 42 * interferes with the dexopt invocation wait. 43 * 44 * /dev/random never hits EOF, so we're sure that we'll still 45 * be waiting for the process to complete. On the device it 46 * stops pretty quickly (which means the child won't be 47 * spinning). 48 */ 49 ProcessBuilder pb = new ProcessBuilder("cat", "/dev/random"); 50 Process p = pb.start(); 51 52 testDexClassLoader(); 53 testDexFile(); 54 55 // shouldn't be necessary, but it's good to be tidy 56 p.destroy(); 57 // let the ProcessManager's daemon thread finish before we shut down 58 // (avoids the occasional segmentation fault) 59 Thread.sleep(500); 60 System.out.println("done"); 61 } 62 63 /** 64 * Create a class loader, explicitly specifying the source DEX and 65 * the location for the optimized DEX. 66 */ 67 private static void testDexClassLoader() throws Exception { 68 ClassLoader dexClassLoader = getDexClassLoader(); 69 Class Another = dexClassLoader.loadClass("Another"); 70 Object another = Another.newInstance(); 71 // not expected to work; just exercises the call 72 dexClassLoader.getResource("nonexistent"); 73 } 74 75 /* 76 * Create an instance of DexClassLoader. The test harness doesn't 77 * have visibility into dalvik.system.*, so we do this through 78 * reflection. 79 */ 80 private static ClassLoader getDexClassLoader() throws Exception { 81 ClassLoader classLoader = Main.class.getClassLoader(); 82 Class DexClassLoader = classLoader.loadClass("dalvik.system.DexClassLoader"); 83 Constructor DexClassLoader_init = DexClassLoader.getConstructor(String.class, 84 String.class, 85 String.class, 86 ClassLoader.class); 87 // create an instance, using the path we found 88 return (ClassLoader) DexClassLoader_init.newInstance(CLASS_PATH, getOdexDir(), LIB_DIR, classLoader); 89 } 90 91 private static void testDexFile() throws Exception { 92 ClassLoader classLoader = Main.class.getClassLoader(); 93 Class DexFile = classLoader.loadClass("dalvik.system.DexFile"); 94 Method DexFile_loadDex = DexFile.getMethod("loadDex", 95 String.class, 96 String.class, 97 Integer.TYPE); 98 Method DexFile_entries = DexFile.getMethod("entries"); 99 Object dexFile = DexFile_loadDex.invoke(null, CLASS_PATH, null, 0); 100 Enumeration<String> e = (Enumeration<String>) DexFile_entries.invoke(dexFile); 101 while (e.hasMoreElements()) { 102 String className = e.nextElement(); 103 System.out.println(className); 104 } 105 } 106 } 107
