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 * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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// -- This file was mechanically generated: Do not edit! -- //

package java.nio;

import java.io.FileDescriptor;
import java.lang.ref.Reference;
import jdk.internal.misc.VM;
import jdk.internal.ref.Cleaner;
import sun.nio.ch.DirectBuffer;


class DirectCharBufferU

 extends CharBuffer



 implements DirectBuffer
{



 // Cached array base offset
 private static final long ARRAY_BASE_OFFSET = UNSAFE.arrayBaseOffset(char[].class);

 // Cached unaligned-access capability
 protected static final boolean UNALIGNED = Bits.unaligned();

 // Base address, used in all indexing calculations
 // NOTE: moved up to Buffer.java for speed in JNI GetDirectBufferAddress
 // protected long address;

 // An object attached to this buffer. If this buffer is a view of another
 // buffer then we use this field to keep a reference to that buffer to
 // ensure that its memory isn't freed before we are done with it.
 private final Object att;

 public Object attachment() {
 return att;
 }




































 public Cleaner cleaner() { return null; }


















































































 // For duplicates and slices
 //
 DirectCharBufferU(DirectBuffer db, // package-private
 int mark, int pos, int lim, int cap,
 int off)
 {

 super(mark, pos, lim, cap);
 address = db.address() + off;



 att = db;




 }

 @Override
 Object base() {
 return null;
 }

 public CharBuffer slice() {
 int pos = this.position();
 int lim = this.limit();
 assert (pos <= lim);
 int rem = (pos <= lim ? lim - pos : 0);
 int off = (pos << 1);
 assert (off >= 0);
 return new DirectCharBufferU(this, -1, 0, rem, rem, off);
 }










 public CharBuffer duplicate() {
 return new DirectCharBufferU(this,
 this.markValue(),
 this.position(),
 this.limit(),
 this.capacity(),
 0);
 }

 public CharBuffer asReadOnlyBuffer() {

 return new DirectCharBufferRU(this,
 this.markValue(),
 this.position(),
 this.limit(),
 this.capacity(),
 0);



 }



 public long address() {
 return address;
 }

 private long ix(int i) {
 return address + ((long)i << 1);
 }

 public char get() {
 try {
 return ((UNSAFE.getChar(ix(nextGetIndex()))));
 } finally {
 Reference.reachabilityFence(this);
 }
 }

 public char get(int i) {
 try {
 return ((UNSAFE.getChar(ix(checkIndex(i)))));
 } finally {
 Reference.reachabilityFence(this);
 }
 }


 char getUnchecked(int i) {
 try {
 return ((UNSAFE.getChar(ix(i))));
 } finally {
 Reference.reachabilityFence(this);
 }
 }


 public CharBuffer get(char[] dst, int offset, int length) {

 if (((long)length << 1) > Bits.JNI_COPY_TO_ARRAY_THRESHOLD) {
 checkBounds(offset, length, dst.length);
 int pos = position();
 int lim = limit();
 assert (pos <= lim);
 int rem = (pos <= lim ? lim - pos : 0);
 if (length > rem)
 throw new BufferUnderflowException();

 long dstOffset = ARRAY_BASE_OFFSET + ((long)offset << 1);
 try {

 if (order() != ByteOrder.nativeOrder())
 UNSAFE.copySwapMemory(null,
 ix(pos),
 dst,
 dstOffset,
 (long)length << 1,
 (long)1 << 1);
 else

 UNSAFE.copyMemory(null,
 ix(pos),
 dst,
 dstOffset,
 (long)length << 1);
 } finally {
 Reference.reachabilityFence(this);
 }
 position(pos + length);
 } else {
 super.get(dst, offset, length);
 }
 return this;



 }



 public CharBuffer put(char x) {

 try {
 UNSAFE.putChar(ix(nextPutIndex()), ((x)));
 } finally {
 Reference.reachabilityFence(this);
 }
 return this;



 }

 public CharBuffer put(int i, char x) {

 try {
 UNSAFE.putChar(ix(checkIndex(i)), ((x)));
 } finally {
 Reference.reachabilityFence(this);
 }
 return this;



 }

 public CharBuffer put(CharBuffer src) {

 if (src instanceof DirectCharBufferU) {
 if (src == this)
 throw createSameBufferException();
 DirectCharBufferU sb = (DirectCharBufferU)src;

 int spos = sb.position();
 int slim = sb.limit();
 assert (spos <= slim);
 int srem = (spos <= slim ? slim - spos : 0);

 int pos = position();
 int lim = limit();
 assert (pos <= lim);
 int rem = (pos <= lim ? lim - pos : 0);

 if (srem > rem)
 throw new BufferOverflowException();
 try {
 UNSAFE.copyMemory(sb.ix(spos), ix(pos), (long)srem << 1);
 } finally {
 Reference.reachabilityFence(sb);
 Reference.reachabilityFence(this);
 }
 sb.position(spos + srem);
 position(pos + srem);
 } else if (src.hb != null) {

 int spos = src.position();
 int slim = src.limit();
 assert (spos <= slim);
 int srem = (spos <= slim ? slim - spos : 0);

 put(src.hb, src.offset + spos, srem);
 src.position(spos + srem);

 } else {
 super.put(src);
 }
 return this;



 }

 public CharBuffer put(char[] src, int offset, int length) {

 if (((long)length << 1) > Bits.JNI_COPY_FROM_ARRAY_THRESHOLD) {
 checkBounds(offset, length, src.length);
 int pos = position();
 int lim = limit();
 assert (pos <= lim);
 int rem = (pos <= lim ? lim - pos : 0);
 if (length > rem)
 throw new BufferOverflowException();

 long srcOffset = ARRAY_BASE_OFFSET + ((long)offset << 1);
 try {

 if (order() != ByteOrder.nativeOrder())
 UNSAFE.copySwapMemory(src,
 srcOffset,
 null,
 ix(pos),
 (long)length << 1,
 (long)1 << 1);
 else

 UNSAFE.copyMemory(src,
 srcOffset,
 null,
 ix(pos),
 (long)length << 1);
 } finally {
 Reference.reachabilityFence(this);
 }
 position(pos + length);
 } else {
 super.put(src, offset, length);
 }
 return this;



 }

 public CharBuffer compact() {

 int pos = position();
 int lim = limit();
 assert (pos <= lim);
 int rem = (pos <= lim ? lim - pos : 0);
 try {
 UNSAFE.copyMemory(ix(pos), ix(0), (long)rem << 1);
 } finally {
 Reference.reachabilityFence(this);
 }
 position(rem);
 limit(capacity());
 discardMark();
 return this;



 }

 public boolean isDirect() {
 return true;
 }

 public boolean isReadOnly() {
 return false;
 }




 public String toString(int start, int end) {
 if ((end > limit()) || (start > end))
 throw new IndexOutOfBoundsException();
 try {
 int len = end - start;
 char[] ca = new char[len];
 CharBuffer cb = CharBuffer.wrap(ca);
 CharBuffer db = this.duplicate();
 db.position(start);
 db.limit(end);
 cb.put(db);
 return new String(ca);
 } catch (StringIndexOutOfBoundsException x) {
 throw new IndexOutOfBoundsException();
 }
 }


 // --- Methods to support CharSequence ---

 public CharBuffer subSequence(int start, int end) {
 int pos = position();
 int lim = limit();
 assert (pos <= lim);
 pos = (pos <= lim ? pos : lim);
 int len = lim - pos;

 if ((start < 0) || (end > len) || (start > end))
 throw new IndexOutOfBoundsException();
 return new DirectCharBufferU(this,
 -1,
 pos + start,
 pos + end,
 capacity(),
 offset);
 }







 public ByteOrder order() {





 return ((ByteOrder.nativeOrder() != ByteOrder.BIG_ENDIAN)
 ? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN);

 }




 ByteOrder charRegionOrder() {
 return order();
 }











}