1/*
2 * Copyright (C) 2014 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#define DO_2_TIMES(x) x x
18#define DO_4_TIMES(x) DO_2_TIMES(DO_2_TIMES(x))
19#define DO_16_TIMES(x) DO_4_TIMES(DO_4_TIMES(x))
20#define DO_256_TIMES(x) DO_16_TIMES(DO_16_TIMES(x))
21#define DO_512_TIMES(x) DO_256_TIMES(DO_2_TIMES(x))
22
23
24public class Main {
25  public static void main(String[] args) {
26    Main m = new Main();
27    System.out.println(m.foo(-1, -1));
28    System.out.println(m.foo(-1, +1));
29    System.out.println(m.foo(+1, -1));
30    System.out.println(m.foo(+1, +1));
31    System.out.println(m.value);
32  }
33
34  public int foo(int a, int b) {
35    if ( a >= 0 ) {
36      if ( b < 0 ) {
37        DO_512_TIMES( synchronized(lock) { value++; } )
38        return 2;
39      }
40      return 1;
41    }
42    return 0;
43  }
44
45  Object lock = new Object();
46  int value = 0;
47}
48