8  * particular file as subject to the "Classpath" exception as provided
   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.java2d;
  27 
  28 import sun.misc.ThreadGroupUtils;
  29 
  30 import java.lang.ref.Reference;
  31 import java.lang.ref.ReferenceQueue;
  32 import java.lang.ref.PhantomReference;
  33 import java.lang.ref.WeakReference;
  34 import java.security.AccessController;
  35 import java.security.PrivilegedAction;
  36 import java.util.ArrayList;
  37 import java.util.Hashtable;
  38 
  39 /**
  40  * This class is used for registering and disposing the native
  41  * data associated with java objects.
  42  *
  43  * The object can register itself by calling one of the addRecord
  44  * methods and providing either the pointer to the native disposal
  45  * method or a descendant of the DisposerRecord class with overridden
  46  * dispose() method.
  47  *
  48  * When the object becomes unreachable, the dispose() method

   8  * particular file as subject to the "Classpath" exception as provided
   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.java2d;
  27 
  28 import sun.awt.util.ThreadGroupUtils;
  29 
  30 import java.lang.ref.Reference;
  31 import java.lang.ref.ReferenceQueue;
  32 import java.lang.ref.PhantomReference;
  33 import java.lang.ref.WeakReference;
  34 import java.security.AccessController;
  35 import java.security.PrivilegedAction;
  36 import java.util.ArrayList;
  37 import java.util.Hashtable;
  38 
  39 /**
  40  * This class is used for registering and disposing the native
  41  * data associated with java objects.
  42  *
  43  * The object can register itself by calling one of the addRecord
  44  * methods and providing either the pointer to the native disposal
  45  * method or a descendant of the DisposerRecord class with overridden
  46  * dispose() method.
  47  *
  48  * When the object becomes unreachable, the dispose() method