1 /*
2  * Copyright (C) 2017 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.util.Arrays;
18 
19 public class Main {
main(String[] args)20   public static void main(String[] args) throws Exception {
21     doTest();
22   }
23 
doTest()24   private static void doTest() throws Exception {
25     doTest(true, DEX1, "B");
26     doTest(false, DEX2, "A");
27     System.out.println("Done");
28   }
29 
doTest(boolean boot, String segment, String className)30   private static void doTest(boolean boot, String segment, String className) throws Exception {
31     ClassLoader expectedClassLoader;
32     if (boot) {
33       expectedClassLoader = Object.class.getClassLoader();
34       addToBootClassLoader(segment);
35     } else {
36       expectedClassLoader = ClassLoader.getSystemClassLoader();
37       addToSystemClassLoader(segment);
38     }
39 
40     Class<?> c = Class.forName(className);
41     if (c.getClassLoader() != expectedClassLoader) {
42       throw new RuntimeException(className + "(" + boot + "/" + segment + "): " +
43           c.getClassLoader() + " vs " + expectedClassLoader);
44     }
45   }
46 
addToBootClassLoader(String s)47   private static native void addToBootClassLoader(String s);
addToSystemClassLoader(String s)48   private static native void addToSystemClassLoader(String s);
49 
50   private static final String DEX1 = System.getenv("DEX_LOCATION") + "/929-search.jar";
51   private static final String DEX2 = System.getenv("DEX_LOCATION") + "/929-search-ex.jar";
52 }
53