/*

 * Copyright (c) 2018, Red Hat, Inc. 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.

 */

package compiler.c2.aarch64;

import java.lang.reflect.Field;

import jdk.internal.misc.Unsafe;

class TestUnsafeVolatileCAS

{

    public volatile int f_int = 0;

    public volatile Integer f_obj = Integer.valueOf(0);

    public volatile long f_long = 0;

    public volatile byte f_byte = 0;

    public volatile short f_short = 0;

    public static Unsafe unsafe = Unsafe.getUnsafe();

    public static Field f_int_field;

    public static Field f_obj_field;

    public static Field f_long_field;

    public static Field f_byte_field;

    public static Field f_short_field;

    public static long f_int_off;

    public static long f_obj_off;

    public static long f_long_off;

    public static long f_byte_off;

    public static long f_short_off;

    static {

        try {

            f_int_field = TestUnsafeVolatileCAS.class.getField("f_int");

            f_obj_field = TestUnsafeVolatileCAS.class.getField("f_obj");

            f_long_field = TestUnsafeVolatileCAS.class.getField("f_long");

            f_byte_field = TestUnsafeVolatileCAS.class.getField("f_byte");

            f_short_field = TestUnsafeVolatileCAS.class.getField("f_short");

            f_int_off = unsafe.objectFieldOffset(f_int_field);

            f_obj_off = unsafe.objectFieldOffset(f_obj_field);

            f_long_off = unsafe.objectFieldOffset(f_long_field);

            f_byte_off = unsafe.objectFieldOffset(f_byte_field);

            f_short_off = unsafe.objectFieldOffset(f_short_field);

        } catch (Exception e) {

            System.out.println("reflection failed " + e);

            e.printStackTrace();

        }

    }

    public static void main(String[] args)

    {

        final TestUnsafeVolatileCAS t = new TestUnsafeVolatileCAS();

        for (int i = 0; i < 100_000; i++) {

            t.f_int = -1;

            t.testInt(-1, i);

            if (t.f_int != i) {

                throw new RuntimeException("bad result!");

            }

        }

        for (int i = 0; i < 100_000; i++) {

            t.f_long = -1;

            t.testLong(-1, i);

            if (t.f_long != i) {

                throw new RuntimeException("bad result!");

            }

        }

        for (int i = 0; i < 100_000; i++) {

            t.f_byte = -1;

            byte i_b = (byte)i;

            t.testByte((byte)-1, i_b);

            if (t.f_byte != i_b) {

                throw new RuntimeException("bad result!");

            }

        }

        for (int i = 0; i < 100_000; i++) {

            t.f_short = -1;

            short i_s = (short)i;

            t.testShort((byte)-1, i_s);

            if (t.f_short != i_s) {

                throw new RuntimeException("bad result!");

            }

        }

        Integer minusOne = Integer.valueOf(-1);

        for (int i = 0; i < 100_000; i++) {

            t.f_obj = minusOne;

            t.testObj(minusOne, Integer.valueOf(i));

            if (t.f_obj != i) {

                throw new RuntimeException("bad result!");

            }

        }

    }

    public void testInt(int x, int i)

    {

        unsafe.compareAndSetInt(this, f_int_off, x, i);

    }

    public void testObj(Object x, Object o)

    {

        unsafe.compareAndSetReference(this, f_obj_off, x, o);

    }

    public void testLong(long x, long i)

    {

        unsafe.compareAndSetLong(this, f_long_off, x, i);

    }

    public void testByte(byte x, byte i)

    {

        unsafe.compareAndSetByte(this, f_byte_off, x, i);

    }

    public void testShort(short x, short i)

    {

        unsafe.compareAndSetShort(this, f_short_off, x, i);

    }

}