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 com.sun.xml.internal.stream.util; 27 28 import java.lang.ref.*; 29 30 /** 31 * This is a Singleton class that allows you to allocate buffer that 32 * are stored in ThreadLocal. This class stores 3 types of char 33 * buffers - small (< 128 bytes), medium (<2K) and large (> 2K) as 34 * well as three byte buffers - small, medium and large. 35 * The local storage is activated on the return of the buffer. 36 * The buffer returns null if it is already allocated. 37 * 38 * @author Binu.John@sun.com 39 * @author Santiago.PericasGeertsen@sun.com 40 */ 41 public class ThreadLocalBufferAllocator { 42 private static ThreadLocal<SoftReference<BufferAllocator>> tlba = new ThreadLocal<>(); 43 44 public static BufferAllocator getBufferAllocator() { 45 SoftReference<BufferAllocator> bAllocatorRef = tlba.get(); 46 if (bAllocatorRef == null || bAllocatorRef.get() == null) { 47 bAllocatorRef = new SoftReference<>(new BufferAllocator()); 48 tlba.set(bAllocatorRef); 49 } 50 51 return bAllocatorRef.get(); 52 } 53 } | 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 com.sun.xml.internal.stream.util; 27 28 import java.lang.ref.*; 29 30 /** 31 * This is a Singleton class that allows you to allocate buffer that 32 * are stored in ThreadLocal. This class stores 3 types of char 33 * buffers - small (< 128 bytes), medium (<2K) and large (> 2K) as 34 * well as three byte buffers - small, medium and large. 35 * The local storage is activated on the return of the buffer. 36 * The buffer returns null if it is already allocated. 37 * 38 * @author Binu John 39 * @author Santiago PericasGeertsen 40 */ 41 public class ThreadLocalBufferAllocator { 42 private static ThreadLocal<SoftReference<BufferAllocator>> tlba = new ThreadLocal<>(); 43 44 public static BufferAllocator getBufferAllocator() { 45 SoftReference<BufferAllocator> bAllocatorRef = tlba.get(); 46 if (bAllocatorRef == null || bAllocatorRef.get() == null) { 47 bAllocatorRef = new SoftReference<>(new BufferAllocator()); 48 tlba.set(bAllocatorRef); 49 } 50 51 return bAllocatorRef.get(); 52 } 53 } |