src/java.base/share/classes/sun/nio/fs/NativeBuffers.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 
  30 /**
  31  * Factory for native buffers.
  32  */
  33 
  34 class NativeBuffers {
  35     private NativeBuffers() { }
  36 
  37     private static final Unsafe unsafe = Unsafe.getUnsafe();
  38 
  39     private static final int TEMP_BUF_POOL_SIZE = 3;
  40     private static ThreadLocal<NativeBuffer[]> threadLocal =
  41         new ThreadLocal<NativeBuffer[]>();
  42 
  43     /**
  44      * Allocates a native buffer, of at least the given size, from the heap.
  45      */
  46     static NativeBuffer allocNativeBuffer(int size) {
  47         // Make a new one of at least 2k
  48         if (size < 2048) size = 2048;




   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 
  30 /**
  31  * Factory for native buffers.
  32  */
  33 
  34 class NativeBuffers {
  35     private NativeBuffers() { }
  36 
  37     private static final Unsafe unsafe = Unsafe.getUnsafe();
  38 
  39     private static final int TEMP_BUF_POOL_SIZE = 3;
  40     private static ThreadLocal<NativeBuffer[]> threadLocal =
  41         new ThreadLocal<NativeBuffer[]>();
  42 
  43     /**
  44      * Allocates a native buffer, of at least the given size, from the heap.
  45      */
  46     static NativeBuffer allocNativeBuffer(int size) {
  47         // Make a new one of at least 2k
  48         if (size < 2048) size = 2048;