blob: 8dfa401fee2fd1eaae0cb9cc2fdddf9e0e5d200e [file] [log] [blame]
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* 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
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*
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*/
/*
* @test
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run main GetPutInt
*/
import java.lang.reflect.Field;
import jdk.internal.misc.Unsafe;
import static jdk.test.lib.Asserts.*;
public class GetPutInt {
public static void main(String args[]) throws Exception {
Unsafe unsafe = Unsafe.getUnsafe();
Test t = new Test();
Field field = Test.class.getField("i");
long offset = unsafe.objectFieldOffset(field);
assertEquals(-1, unsafe.getInt(t, offset));
unsafe.putInt(t, offset, 0);
assertEquals(0, unsafe.getInt(t, offset));
long address = unsafe.allocateMemory(8);
unsafe.putInt(address, 1);
assertEquals(1, unsafe.getInt(address));
unsafe.freeMemory(address);
int arrayInt[] = { -1, 0, 1, 2 };
int scale = unsafe.arrayIndexScale(arrayInt.getClass());
offset = unsafe.arrayBaseOffset(arrayInt.getClass());
for (int i = 0; i < arrayInt.length; i++) {
assertEquals(unsafe.getInt(arrayInt, offset), arrayInt[i]);
offset += scale;
}
}
static class Test {
public int i = -1;
}
}