/* * Copyright (c) 2020 Alibaba Group Holding Limited. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* @test * @library / /test/lib * @bug 8246051 * @summary A test for SIGBUS in aarch64 by unalgined unsafe access * @requires os.arch=="aarch64" * @run main/othervm/timeout=200 -XX:-Inline TestUnsafeUnalignedSwap */ import sun.misc.Unsafe; import java.lang.reflect.Field; import java.util.*; import jdk.test.lib.Asserts; public class TestUnsafeUnalignedSwap { private final static Unsafe U; private static long sum = 4; static volatile long[] arrayLong = new long[1001]; static volatile int[] arrayInt = new int[1001]; static { try { Field f = Unsafe.class.getDeclaredField("theUnsafe"); f.setAccessible(true); U = (Unsafe) f.get(null); } catch (ReflectiveOperationException e) { throw new InternalError(e); } } // Bug 8246051 : Unsafe.compareAndSwapLong should not crash public static void testCompareAndSwapLong() { try { if (U.compareAndSwapLong(arrayLong, Unsafe.ARRAY_LONG_BASE_OFFSET + 1, 3243, 2334)) { sum++; } else { sum--; } } catch (InternalError e) { System.out.println(e.getMessage()); } } public static void testCompareAndSwapInt() { try { if (U.compareAndSwapInt(arrayInt, Unsafe.ARRAY_INT_BASE_OFFSET + 1, 3243, 2334)) { sum++; } else { sum--; } } catch (InternalError e) { System.out.println(e.getMessage()); } } public static void test() { testCompareAndSwapLong(); testCompareAndSwapInt(); } public static void main(String[] args) { test(); } }