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 * @summary Verifies behaviour of Unsafe.allocateMemory 27 * @library /testlibrary 28 * @modules java.base/sun.misc 29 * java.management 30 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:MallocMaxTestWords=100m AllocateMemory 31 */ 32 33 import com.oracle.java.testlibrary.*; 34 import sun.misc.Unsafe; 35 import static com.oracle.java.testlibrary.Asserts.*; 36 37 public class AllocateMemory { 38 public static void main(String args[]) throws Exception { 39 Unsafe unsafe = Utils.getUnsafe(); 40 41 // Allocate a byte, write to the location and read back the value 42 long address = unsafe.allocateMemory(1); 43 assertNotEquals(address, 0L); 44 45 unsafe.putByte(address, Byte.MAX_VALUE); 46 assertEquals(Byte.MAX_VALUE, unsafe.getByte(address)); 47 unsafe.freeMemory(address); 48 49 // Call to allocateMemory() with a negative value should result in an IllegalArgumentException 50 try { 51 address = unsafe.allocateMemory(-1); 52 throw new RuntimeException("Did not get expected IllegalArgumentException"); 53 } catch (IllegalArgumentException e) { 54 // Expected 55 assertNotEquals(address, 0L); | 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 * @summary Verifies behaviour of Unsafe.allocateMemory 27 * @library /testlibrary 28 * @modules java.base/sun.misc 29 * java.management 30 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:MallocMaxTestWords=100m AllocateMemory 31 */ 32 33 import jdk.test.lib.*; 34 import sun.misc.Unsafe; 35 import static jdk.test.lib.Asserts.*; 36 37 public class AllocateMemory { 38 public static void main(String args[]) throws Exception { 39 Unsafe unsafe = Utils.getUnsafe(); 40 41 // Allocate a byte, write to the location and read back the value 42 long address = unsafe.allocateMemory(1); 43 assertNotEquals(address, 0L); 44 45 unsafe.putByte(address, Byte.MAX_VALUE); 46 assertEquals(Byte.MAX_VALUE, unsafe.getByte(address)); 47 unsafe.freeMemory(address); 48 49 // Call to allocateMemory() with a negative value should result in an IllegalArgumentException 50 try { 51 address = unsafe.allocateMemory(-1); 52 throw new RuntimeException("Did not get expected IllegalArgumentException"); 53 } catch (IllegalArgumentException e) { 54 // Expected 55 assertNotEquals(address, 0L); |