/*
|
* Copyright (C) 2017 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.lang.reflect.Constructor;
|
import java.lang.reflect.Method;
|
|
public class Main {
|
public static String TEST_NAME = "155-java-set-resolved-type";
|
|
public static void main(String[] args) {
|
try {
|
Class<?> class_loader_class = Class.forName("dalvik.system.PathClassLoader");
|
System.loadLibrary(args[0]);
|
} catch (ClassNotFoundException e) {
|
usingRI = true;
|
// Add expected JNI_OnLoad log line to match expected.txt.
|
System.out.println("JNI_OnLoad called");
|
}
|
try {
|
String dex_location = System.getenv("DEX_LOCATION");
|
ClassLoader systemLoader = ClassLoader.getSystemClassLoader().getParent();
|
ClassLoader exLoader = getClassLoaderFor(dex_location, systemLoader, /* ex */ true);
|
ClassLoader mainLoader = getClassLoaderFor(dex_location, exLoader, /* ex */ false);
|
|
// Resolve TestParameter class. It shall be defined by mainLoader.
|
// This does not resolve method parameter types.
|
Class<?> tpc = Class.forName("TestParameter", false, mainLoader);
|
// Get declared methods of TestParameter.
|
// This still does not resolve method parameter types.
|
Method[] ms = tpc.getDeclaredMethods();
|
if (ms == null || ms.length != 1) { throw new Error("Unexpected methods"); };
|
// Call getParameterTypes() to resolve parameter types. The parameter type
|
// TestInterface shall be defined by the exLoader. This used to store the
|
// TestInterface class in the dex cache resolved types for the mainLoader
|
// but not in the mainLoader's class table. This discrepancy used to cause
|
// a crash further down.
|
ms[0].getParameterTypes();
|
|
// Resolve but do not initialize TestImplementation. During the resolution,
|
// we see the TestInterface in the dex cache, so we do not try to look it up
|
// or resolve it using the mainLoader.
|
Class<?> timpl = Class.forName("TestImplementation", false, mainLoader);
|
// Clear the dex cache resolved types to force a proper lookup the next time
|
// we need to find TestInterface.
|
clearResolvedTypes(timpl);
|
|
// Force intialization of TestImplementation. This expects the interface type
|
// to be resolved and found through simple lookup.
|
timpl.newInstance();
|
} catch (Throwable t) {
|
t.printStackTrace(System.out);
|
}
|
}
|
|
public static ClassLoader getClassLoaderFor(String location, ClassLoader parent, boolean ex)
|
throws Exception {
|
try {
|
Class<?> class_loader_class = Class.forName("dalvik.system.PathClassLoader");
|
Constructor<?> ctor =
|
class_loader_class.getConstructor(String.class, ClassLoader.class);
|
/* on Dalvik, this is a DexFile; otherwise, it's null */
|
String path = location + "/" + TEST_NAME + (ex ? "-ex.jar" : ".jar");
|
return (ClassLoader)ctor.newInstance(path, parent);
|
} catch (ClassNotFoundException e) {
|
// Running on RI. Use URLClassLoader.
|
String url = "file://" + location + (ex ? "/classes-ex/" : "/classes/");
|
return new java.net.URLClassLoader(
|
new java.net.URL[] { new java.net.URL(url) }, parent);
|
}
|
}
|
|
public static void clearResolvedTypes(Class<?> c) {
|
if (!usingRI) {
|
nativeClearResolvedTypes(c);
|
}
|
}
|
|
private static boolean usingRI = false;
|
|
public static native void nativeClearResolvedTypes(Class<?> c);
|
}
|
