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* Copyright (c) 2000, 2011, 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 sun.misc.Cleaner;
import sun.misc.Unsafe;
import sun.misc.VM;
import sun.nio.ch.DirectBuffer;
class DirectDoubleBufferU
extends DoubleBuffer
implements DirectBuffer
{
// Cached unsafe-access object
protected static final Unsafe unsafe = Bits.unsafe();
// Cached array base offset
private static final long arrayBaseOffset = (long)unsafe.arrayBaseOffset(double[].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
//
DirectDoubleBufferU(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;
}
public DoubleBuffer slice() {
int pos = this.position();
int lim = this.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
int off = (pos << 3);
assert (off >= 0);
return new DirectDoubleBufferU(this, -1, 0, rem, rem, off);
}
public DoubleBuffer duplicate() {
return new DirectDoubleBufferU(this,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
0);
}
public DoubleBuffer asReadOnlyBuffer() {
return new DirectDoubleBufferRU(this,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
0);
}
public long address() {
return address;
}
private long ix(int i) {
return address + (i << 3);
}
public double get() {
return ((unsafe.getDouble(ix(nextGetIndex()))));
}
public double get(int i) {
return ((unsafe.getDouble(ix(checkIndex(i)))));
}
public DoubleBuffer get(double[] dst, int offset, int length) {
if ((length << 3) > 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();
if (order() != ByteOrder.nativeOrder())
Bits.copyToLongArray(ix(pos), dst,
offset << 3,
length << 3);
else
Bits.copyToArray(ix(pos), dst, arrayBaseOffset,
offset << 3,
length << 3);
position(pos + length);
} else {
super.get(dst, offset, length);
}
return this;
}
public DoubleBuffer put(double x) {
unsafe.putDouble(ix(nextPutIndex()), ((x)));
return this;
}
public DoubleBuffer put(int i, double x) {
unsafe.putDouble(ix(checkIndex(i)), ((x)));
return this;
}
public DoubleBuffer put(DoubleBuffer src) {
if (src instanceof DirectDoubleBufferU) {
if (src == this)
throw new IllegalArgumentException();
DirectDoubleBufferU sb = (DirectDoubleBufferU)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();
unsafe.copyMemory(sb.ix(spos), ix(pos), srem << 3);
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 DoubleBuffer put(double[] src, int offset, int length) {
if ((length << 3) > 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();
if (order() != ByteOrder.nativeOrder())
Bits.copyFromLongArray(src, offset << 3,
ix(pos), length << 3);
else
Bits.copyFromArray(src, arrayBaseOffset, offset << 3,
ix(pos), length << 3);
position(pos + length);
} else {
super.put(src, offset, length);
}
return this;
}
public DoubleBuffer compact() {
int pos = position();
int lim = limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
unsafe.copyMemory(ix(pos), ix(0), rem << 3);
position(rem);
limit(capacity());
discardMark();
return this;
}
public boolean isDirect() {
return true;
}
public boolean isReadOnly() {
return false;
}
public ByteOrder order() {
return ((ByteOrder.nativeOrder() != ByteOrder.BIG_ENDIAN)
? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN);
}
}