| /* |
| * 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; |
| } |