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test/runtime/Unsafe/GetPutInt.java

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  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @library /test/lib
  27  * @modules java.base/jdk.internal.misc
  28  *          java.management
  29  * @run main GetPutInt
  30  */
  31 
  32 import java.lang.reflect.Field;
  33 import jdk.test.lib.unsafe.UnsafeHelper;
  34 import jdk.internal.misc.Unsafe;
  35 import static jdk.test.lib.Asserts.*;
  36 
  37 public class GetPutInt {
  38     public static void main(String args[]) throws Exception {
  39         Unsafe unsafe = UnsafeHelper.getUnsafe();
  40         Test t = new Test();
  41         Field field = Test.class.getField("i");
  42 
  43         long offset = unsafe.objectFieldOffset(field);
  44         assertEquals(-1, unsafe.getInt(t, offset));
  45         unsafe.putInt(t, offset, 0);
  46         assertEquals(0, unsafe.getInt(t, offset));
  47 
  48         long address = unsafe.allocateMemory(8);
  49         unsafe.putInt(address, 1);
  50         assertEquals(1, unsafe.getInt(address));
  51         unsafe.freeMemory(address);
  52 
  53         int arrayInt[] = { -1, 0, 1, 2 };
  54         int scale = unsafe.arrayIndexScale(arrayInt.getClass());
  55         offset = unsafe.arrayBaseOffset(arrayInt.getClass());
  56         for (int i = 0; i < arrayInt.length; i++) {
  57             assertEquals(unsafe.getInt(arrayInt, offset), arrayInt[i]);
  58             offset += scale;
  59         }


  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @library /test/lib
  27  * @modules java.base/jdk.internal.misc
  28  *          java.management
  29  * @run main GetPutInt
  30  */
  31 
  32 import java.lang.reflect.Field;

  33 import jdk.internal.misc.Unsafe;
  34 import static jdk.test.lib.Asserts.*;
  35 
  36 public class GetPutInt {
  37     public static void main(String args[]) throws Exception {
  38         Unsafe unsafe = Unsafe.getUnsafe();
  39         Test t = new Test();
  40         Field field = Test.class.getField("i");
  41 
  42         long offset = unsafe.objectFieldOffset(field);
  43         assertEquals(-1, unsafe.getInt(t, offset));
  44         unsafe.putInt(t, offset, 0);
  45         assertEquals(0, unsafe.getInt(t, offset));
  46 
  47         long address = unsafe.allocateMemory(8);
  48         unsafe.putInt(address, 1);
  49         assertEquals(1, unsafe.getInt(address));
  50         unsafe.freeMemory(address);
  51 
  52         int arrayInt[] = { -1, 0, 1, 2 };
  53         int scale = unsafe.arrayIndexScale(arrayInt.getClass());
  54         offset = unsafe.arrayBaseOffset(arrayInt.getClass());
  55         for (int i = 0; i < arrayInt.length; i++) {
  56             assertEquals(unsafe.getInt(arrayInt, offset), arrayInt[i]);
  57             offset += scale;
  58         }
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