src/java.base/share/classes/sun/nio/fs/NativeBuffer.java

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rev 12972 : 8140606: Update library code to use internal Unsafe
Reviewed-by: duke


   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.nio.fs;
  27 
  28 import sun.misc.Unsafe;
  29 import sun.misc.Cleaner;
  30 
  31 /**
  32  * A light-weight buffer in native memory.
  33  */
  34 
  35 class NativeBuffer {
  36     private static final Unsafe unsafe = Unsafe.getUnsafe();
  37 
  38     private final long address;
  39     private final int size;
  40     private final Cleaner cleaner;
  41 
  42     // optional "owner" to avoid copying
  43     // (only safe for use by thread-local caches)
  44     private Object owner;
  45 
  46     private static class Deallocator implements Runnable {
  47         private final long address;
  48         Deallocator(long address) {




   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.nio.fs;
  27 
  28 import jdk.internal.misc.Unsafe;
  29 import sun.misc.Cleaner;
  30 
  31 /**
  32  * A light-weight buffer in native memory.
  33  */
  34 
  35 class NativeBuffer {
  36     private static final Unsafe unsafe = Unsafe.getUnsafe();
  37 
  38     private final long address;
  39     private final int size;
  40     private final Cleaner cleaner;
  41 
  42     // optional "owner" to avoid copying
  43     // (only safe for use by thread-local caches)
  44     private Object owner;
  45 
  46     private static class Deallocator implements Runnable {
  47         private final long address;
  48         Deallocator(long address) {