/*
 * Copyright (C) 2014 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.
 */

#define DO_2_TIMES(x) x x
#define DO_4_TIMES(x) DO_2_TIMES(DO_2_TIMES(x))
#define DO_16_TIMES(x) DO_4_TIMES(DO_4_TIMES(x))
#define DO_256_TIMES(x) DO_16_TIMES(DO_16_TIMES(x))
#define DO_512_TIMES(x) DO_256_TIMES(DO_2_TIMES(x))


public class Main {
  public static void main(String[] args) {
    Main m = new Main();
    System.out.println(m.foo(-1, -1));
    System.out.println(m.foo(-1, +1));
    System.out.println(m.foo(+1, -1));
    System.out.println(m.foo(+1, +1));
    System.out.println(m.value);
  }

  public int foo(int a, int b) {
    if ( a >= 0 ) {
      if ( b < 0 ) {
        DO_512_TIMES( synchronized(lock) { value++; } )
        return 2;
      }
      return 1;
    }
    return 0;
  }

  Object lock = new Object();
  int value = 0;
}
