9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.corba;
  27 
  28 import com.sun.corba.se.impl.io.ValueUtility;
  29 import sun.misc.Unsafe;
  30 
  31 import java.lang.reflect.Field;
  32 import java.security.AccessController;
  33 import java.security.PrivilegedAction;
  34 
  35 /** A repository of "shared secrets", which are a mechanism for
  36     calling implementation-private methods in another package without
  37     using reflection. A package-private class implements a public
  38     interface and provides the ability to call package-private methods
  39     within that package; the object implementing that interface is
  40     provided through a third package to which access is restricted.
  41     This framework avoids the primary disadvantage of using reflection
  42     for this purpose, namely the loss of compile-time checking. */
  43 
  44 // SharedSecrets cloned in corba repo to avoid build issues
  45 public class SharedSecrets {
  46     private static final Unsafe unsafe = getUnsafe();
  47     private static JavaCorbaAccess javaCorbaAccess;
  48 
  49      private static Unsafe getUnsafe() {
  50           PrivilegedAction<Unsafe> pa = () -> {
  51                Class<?> unsafeClass = sun.misc.Unsafe.class ;
  52                try {
  53                     Field f = unsafeClass.getDeclaredField("theUnsafe");
  54                     f.setAccessible(true);
  55                     return (Unsafe) f.get(null);
  56                } catch (Exception e) {
  57                     throw new Error(e);
  58                }
  59           };
  60           return AccessController.doPrivileged(pa);
  61      }
  62 
  63     public static JavaCorbaAccess getJavaCorbaAccess() {
  64         if (javaCorbaAccess == null) {
  65             // Ensure ValueUtility is initialized; we know that that class
  66             // provides the shared secret
  67             unsafe.ensureClassInitialized(ValueUtility.class);
  68         }
  69         return javaCorbaAccess;
  70     }
  71 

   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.corba;
  27 
  28 import com.sun.corba.se.impl.io.ValueUtility;
  29 import jdk.internal.misc.Unsafe;
  30 
  31 import java.lang.reflect.Field;
  32 import java.security.AccessController;
  33 import java.security.PrivilegedAction;
  34 
  35 /** A repository of "shared secrets", which are a mechanism for
  36     calling implementation-private methods in another package without
  37     using reflection. A package-private class implements a public
  38     interface and provides the ability to call package-private methods
  39     within that package; the object implementing that interface is
  40     provided through a third package to which access is restricted.
  41     This framework avoids the primary disadvantage of using reflection
  42     for this purpose, namely the loss of compile-time checking. */
  43 
  44 // SharedSecrets cloned in corba repo to avoid build issues
  45 public class SharedSecrets {
  46     private static final Unsafe unsafe = getUnsafe();
  47     private static JavaCorbaAccess javaCorbaAccess;
  48 
  49      private static Unsafe getUnsafe() {
  50           PrivilegedAction<Unsafe> pa = () -> {
  51                Class<?> unsafeClass = jdk.internal.misc.Unsafe.class ;
  52                try {
  53                     Field f = unsafeClass.getDeclaredField("theUnsafe");
  54                     f.setAccessible(true);
  55                     return (Unsafe) f.get(null);
  56                } catch (Exception e) {
  57                     throw new Error(e);
  58                }
  59           };
  60           return AccessController.doPrivileged(pa);
  61      }
  62 
  63     public static JavaCorbaAccess getJavaCorbaAccess() {
  64         if (javaCorbaAccess == null) {
  65             // Ensure ValueUtility is initialized; we know that that class
  66             // provides the shared secret
  67             unsafe.ensureClassInitialized(ValueUtility.class);
  68         }
  69         return javaCorbaAccess;
  70     }
  71