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
17import java.lang.reflect.InvocationTargetException;
18import java.lang.reflect.Method;
19
20public 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