1 /* 2 * Copyright (C) 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.InvocationTargetException; 18 import java.lang.reflect.Method; 19 20 public class Main { 21 public static void main(String[] args) throws Exception { 22 System.loadLibrary(args[0]); 23 Class<?> c = Class.forName("ErrClass"); 24 Method m = c.getMethod("errMethod"); 25 26 // Print the counter before invokes. The golden file expects this to be 0. 27 int hotnessCounter = getHotnessCounter(c, "errMethod"); 28 if (hotnessCounter != 0) { 29 throw new RuntimeException("Unexpected hotnessCounter: " + hotnessCounter); 30 } 31 32 // Loop enough to make sure the interpreter reports invocations count. 33 long result = 0; 34 for (int i = 0; i < 10000; i++) { 35 try { 36 result += (Long)m.invoke(null); 37 hotnessCounter = getHotnessCounter(c, "errMethod"); 38 if (hotnessCounter != 0) { 39 throw new RuntimeException( 40 "Unexpected hotnessCounter: " + hotnessCounter); 41 } 42 43 } catch (InvocationTargetException e) { 44 if (!(e.getCause() instanceof NullPointerException)) { 45 throw e; 46 } 47 } 48 } 49 50 // Not compilable methods should not increase their hotness counter. 51 if (hotnessCounter != 0) { 52 throw new RuntimeException("Unexpected hotnessCounter: " + hotnessCounter); 53 } 54 } 55 56 public static native int getHotnessCounter(Class cls, String method_name); 57 } 58
