7047325: Internal API to improve management of direct buffers
Reviewed-by: alanb, mduigou
/*
* Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.nio;
/**
* A typesafe enumeration for byte orders.
*
* @author Mark Reinhold
* @author JSR-51 Expert Group
* @since 1.4
*/
public final class ByteOrder {
private String name;
private ByteOrder(String name) {
this.name = name;
}
/**
* Constant denoting big-endian byte order. In this order, the bytes of a
* multibyte value are ordered from most significant to least significant.
* </p>
*/
public static final ByteOrder BIG_ENDIAN
= new ByteOrder("BIG_ENDIAN");
/**
* Constant denoting little-endian byte order. In this order, the bytes of
* a multibyte value are ordered from least significant to most
* significant. </p>
*/
public static final ByteOrder LITTLE_ENDIAN
= new ByteOrder("LITTLE_ENDIAN");
/**
* Retrieves the native byte order of the underlying platform.
*
* <p> This method is defined so that performance-sensitive Java code can
* allocate direct buffers with the same byte order as the hardware.
* Native code libraries are often more efficient when such buffers are
* used. </p>
*
* @return The native byte order of the hardware upon which this Java
* virtual machine is running
*/
public static ByteOrder nativeOrder() {
return Bits.byteOrder();
}
/**
* Constructs a string describing this object.
*
* <p> This method returns the string <tt>"BIG_ENDIAN"</tt> for {@link
* #BIG_ENDIAN} and <tt>"LITTLE_ENDIAN"</tt> for {@link #LITTLE_ENDIAN}.
* </p>
*
* @return The specified string
*/
public String toString() {
return name;
}
}