49 lines
1.6 KiB
Java
49 lines
1.6 KiB
Java
/*
|
|
* Copyright (C) 2016 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.Method;
|
|
|
|
public class Main {
|
|
public static void main(String[] args) {
|
|
System.loadLibrary(args[0]);
|
|
|
|
// Get all methods. We cannot call getDeclaredMethod("foo") as
|
|
// that would make "foo" a strong root.
|
|
Method[] methods = Main.class.getDeclaredMethods();
|
|
|
|
// Call getName on the methods, which is implemented by using the dex
|
|
// cache and calling setResolvedString.
|
|
for (int i = 0; i < methods.length; i++) {
|
|
methods[i].getName();
|
|
}
|
|
|
|
// Compile Main.foo. "foo" needs to be a strong root for JIT compilation.
|
|
// We stress test this:
|
|
// - avoid strongly interning "foo" by doing "f" + "oo"
|
|
// - call GC so that weaks can be collected.
|
|
// - invoke foo() to make sure "foo" hasn't been collected.
|
|
ensureJitCompiled(Main.class, "f" + "oo");
|
|
Runtime.getRuntime().gc();
|
|
foo();
|
|
}
|
|
|
|
public static void foo() {
|
|
System.out.println("foo");
|
|
}
|
|
|
|
public static native void ensureJitCompiled(Class cls, String method_name);
|
|
}
|