1 /* 2 * Copyright 2016 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.lang.reflect.Field; 18 import java.lang.reflect.Constructor; 19 import java.lang.reflect.Method; 20 21 class Main { 22 static class Inner { 23 final public static int abc = 10; 24 } 25 26 static class Nested { 27 28 } 29 30 public static void main(String[] args) { 31 System.loadLibrary(args[0]); 32 if (!checkAppImageLoaded()) { 33 System.out.println("App image is not loaded!"); 34 } else if (!checkAppImageContains(Inner.class)) { 35 System.out.println("App image does not contain Inner!"); 36 } 37 38 if (!checkInitialized(Inner.class)) 39 System.out.println("Inner class is not initialized!"); 40 41 if (!checkInitialized(Nested.class)) 42 System.out.println("Nested class is not initialized!"); 43 44 if (!checkInitialized(StaticFields.class)) 45 System.out.println("StaticFields class is not initialized!"); 46 47 if (!checkInitialized(StaticFieldsInitSub.class)) 48 System.out.println("StaticFieldsInitSub class is not initialized!"); 49 50 if (!checkInitialized(StaticFieldsInit.class)) 51 System.out.println("StaticFieldsInit class is not initialized!"); 52 53 if (!checkInitialized(StaticInternString.class)) 54 System.out.println("StaticInternString class is not initialized!"); 55 56 StringBuffer sb = new StringBuffer(); 57 sb.append("java."); 58 sb.append("abc."); 59 sb.append("Action"); 60 61 String tmp = sb.toString(); 62 String intern = tmp.intern(); 63 64 assertNotEqual(tmp, intern, "Dynamically constructed String, not interned."); 65 assertEqual(intern, StaticInternString.intent, "Static encoded literal String not interned."); 66 assertEqual(BootInternedString.boot, BootInternedString.boot.intern(), 67 "Static encoded literal String not moved back to runtime intern table."); 68 69 try { 70 Field f = StaticInternString.class.getDeclaredField("intent"); 71 assertEqual(intern, f.get(null), "String Literals are not interned properly."); 72 73 } catch (Exception e) { 74 System.out.println("Exception"); 75 } 76 77 assertEqual(StaticInternString.getIntent(), StaticInternString2.getIntent(), 78 "String Literals are not intenred properly, App image static strings duplicated."); 79 80 // reload the class StaticInternString, check whether static strings interned properly 81 final String DEX_FILE = System.getenv("DEX_LOCATION") + "/596-app-images.jar"; 82 final String LIBRARY_SEARCH_PATH = System.getProperty("java.library.path"); 83 84 try { 85 Class<?> pathClassLoader = Class.forName("dalvik.system.PathClassLoader"); 86 if (pathClassLoader == null) { 87 throw new AssertionError("Counldn't find path class loader class"); 88 } 89 Constructor<?> ctor = 90 pathClassLoader.getDeclaredConstructor(String.class, String.class, ClassLoader.class); 91 ClassLoader loader = (ClassLoader) ctor.newInstance( 92 DEX_FILE, LIBRARY_SEARCH_PATH, null); 93 94 Class<?> staticInternString = loader.loadClass("StaticInternString"); 95 96 if (!checkAppImageContains(staticInternString)) { 97 System.out.println("Not loaded again."); 98 } 99 Method getIntent = staticInternString.getDeclaredMethod("getIntent"); 100 101 assertEqual(StaticInternString.getIntent(), getIntent.invoke(staticInternString), 102 "Dynamically loaded app image's literal strings not interned properly."); 103 } catch (Exception e) { 104 e.printStackTrace(System.out); 105 } 106 107 } 108 109 public static native boolean checkAppImageLoaded(); 110 public static native boolean checkAppImageContains(Class<?> klass); 111 public static native boolean checkInitialized(Class<?> klass); 112 113 public static void assertEqual(Object a, Object b, String msg) { 114 if (a != b) 115 System.out.println(msg); 116 } 117 118 public static void assertNotEqual(Object a, Object b, String msg) { 119 if (a == b) 120 System.out.println(msg); 121 } 122 123 } 124 125 class StaticFields{ 126 public static int abc; 127 } 128 129 class StaticFieldsInitSub extends StaticFieldsInit { 130 final public static int def = 10; 131 } 132 133 class StaticFieldsInit{ 134 final public static int abc = 10; 135 } 136 137 class StaticInternString { 138 final public static String intent = "java.abc.Action"; 139 static public String getIntent() { 140 return intent; 141 } 142 } 143 144 class BootInternedString { 145 final public static String boot = "double"; 146 } 147 148 class StaticInternString2 { 149 final public static String intent = "java.abc.Action"; 150 151 static String getIntent() { 152 return intent; 153 } 154 } 155 156
