25  * @test
  26  * @summary Verify behaviour of Unsafe.get/putObject
  27  * @library /test/lib
  28  * @modules java.base/jdk.internal.misc
  29  *          java.management
  30  * @run main GetPutObject
  31  */
  32 
  33 import java.lang.reflect.Field;
  34 import jdk.internal.misc.Unsafe;
  35 import static jdk.test.lib.Asserts.*;
  36 
  37 public class GetPutObject {
  38     public static void main(String args[]) throws Exception {
  39         Unsafe unsafe = Unsafe.getUnsafe();
  40         Test t = new Test();
  41         Object o = new Object();
  42         Field field = Test.class.getField("o");
  43 
  44         long offset = unsafe.objectFieldOffset(field);
  45         assertEquals(t.o, unsafe.getObject(t, offset));
  46 
  47         unsafe.putObject(t, offset, o);
  48         assertEquals(o, unsafe.getObject(t, offset));
  49 
  50         Object arrayObject[] = { unsafe, null, new Object() };
  51         int scale = unsafe.arrayIndexScale(arrayObject.getClass());
  52         offset = unsafe.arrayBaseOffset(arrayObject.getClass());
  53         for (int i = 0; i < arrayObject.length; i++) {
  54             assertEquals(unsafe.getObject(arrayObject, offset), arrayObject[i]);
  55             offset += scale;
  56         }
  57     }
  58 
  59     static class Test {
  60         public Object o = new Object();
  61     }
  62 }

  25  * @test
  26  * @summary Verify behaviour of Unsafe.get/putObject
  27  * @library /test/lib
  28  * @modules java.base/jdk.internal.misc
  29  *          java.management
  30  * @run main GetPutObject
  31  */
  32 
  33 import java.lang.reflect.Field;
  34 import jdk.internal.misc.Unsafe;
  35 import static jdk.test.lib.Asserts.*;
  36 
  37 public class GetPutObject {
  38     public static void main(String args[]) throws Exception {
  39         Unsafe unsafe = Unsafe.getUnsafe();
  40         Test t = new Test();
  41         Object o = new Object();
  42         Field field = Test.class.getField("o");
  43 
  44         long offset = unsafe.objectFieldOffset(field);
  45         assertEquals(t.o, unsafe.getReference(t, offset));
  46 
  47         unsafe.putReference(t, offset, o);
  48         assertEquals(o, unsafe.getReference(t, offset));
  49 
  50         Object arrayObject[] = { unsafe, null, new Object() };
  51         int scale = unsafe.arrayIndexScale(arrayObject.getClass());
  52         offset = unsafe.arrayBaseOffset(arrayObject.getClass());
  53         for (int i = 0; i < arrayObject.length; i++) {
  54             assertEquals(unsafe.getReference(arrayObject, offset), arrayObject[i]);
  55             offset += scale;
  56         }
  57     }
  58 
  59     static class Test {
  60         public Object o = new Object();
  61     }
  62 }