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/*
* 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 TestUnsafeVolatileWeakCAS
{
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 = TestUnsafeVolatileWeakCAS.class.getField("f_int");
f_obj_field = TestUnsafeVolatileWeakCAS.class.getField("f_obj");
f_long_field = TestUnsafeVolatileWeakCAS.class.getField("f_long");
f_byte_field = TestUnsafeVolatileWeakCAS.class.getField("f_byte");
f_short_field = TestUnsafeVolatileWeakCAS.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 TestUnsafeVolatileWeakCAS t = new TestUnsafeVolatileWeakCAS();
for (int i = 0; i < 100_000; i++) {
t.f_int = -1;
if (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;
if (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;
if (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;
if (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;
if (t.testObj(minusOne, Integer.valueOf(i))) {
if (t.f_obj != i) {
throw new RuntimeException("bad result!");
}
}
}
}
public boolean testInt(int x, int i)
{
return unsafe.weakCompareAndSetInt(this, f_int_off, x, i);
}
public boolean testObj(Object x, Object o)
{
return unsafe.weakCompareAndSetReference(this, f_obj_off, x, o);
}
public boolean testLong(long x, long i)
{
return unsafe.weakCompareAndSetLong(this, f_long_off, x, i);
}
public boolean testByte(byte x, byte i)
{
return unsafe.weakCompareAndSetByte(this, f_byte_off, x, i);
}
public boolean testShort(short x, short i)
{
return unsafe.weakCompareAndSetShort(this, f_short_off, x, i);
}
}
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