java.nio
Class DirectShortBufferRU

java.lang.Object
  java.nio.Buffer
      java.nio.ShortBuffer
          java.nio.DirectShortBufferU
              java.nio.DirectShortBufferRU

All Implemented Interfaces:

Comparable, sun.nio.ch.DirectBuffer

class DirectShortBufferRU

extends DirectShortBufferU

implements sun.nio.ch.DirectBuffer

Field Summary

protected static boolean	unaligned
protected static sun.misc.Unsafe	unsafe
protected Object	viewedBuffer

Fields inherited from class java.nio.ShortBuffer

hb, isReadOnly, offset

Fields inherited from class java.nio.Buffer

address

Constructor Summary

(package private)

DirectShortBufferRU(sun.nio.ch.DirectBuffer db, int mark, int pos, int lim, int cap, int off)

Method Summary

long	address()
ShortBuffer	asReadOnlyBuffer() Creates a new, read-only short buffer that shares this buffer's content.
sun.misc.Cleaner	cleaner()
ShortBuffer	compact() Compacts this buffer (optional operation).
ShortBuffer	duplicate() Creates a new short buffer that shares this buffer's content.
short	get() Relative get method.
short	get(int i) Absolute get method.
ShortBuffer	get(short[] dst, int offset, int length) Relative bulk get method.
boolean	isDirect() Tells whether or not this short buffer is direct.
boolean	isReadOnly() Tells whether or not this buffer is read-only.
ByteOrder	order() Retrieves this buffer's byte order.
ShortBuffer	put(int i, short x) Absolute put method (optional operation).
ShortBuffer	put(short x) Relative put method (optional operation).
ShortBuffer	put(short[] src, int offset, int length) Relative bulk put method (optional operation).
ShortBuffer	put(ShortBuffer src) Relative bulk put method (optional operation).
ShortBuffer	slice() Creates a new short buffer whose content is a shared subsequence of this buffer's content.
Object	viewedBuffer()

Methods inherited from class java.nio.ShortBuffer

allocate, array, arrayOffset, compareTo, equals, get, hasArray, hashCode, put, toString, wrap, wrap

Methods inherited from class java.nio.Buffer

capacity, checkBounds, checkIndex, checkIndex, clear, flip, hasRemaining, limit, limit, mark, markValue, nextGetIndex, nextGetIndex, nextPutIndex, nextPutIndex, position, position, remaining, reset, rewind

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface sun.nio.ch.DirectBuffer

address, cleaner, viewedBuffer

Field Detail

unsafe

protected static final sun.misc.Unsafe unsafe

unaligned

protected static final boolean unaligned

viewedBuffer

protected Object viewedBuffer

Constructor Detail

DirectShortBufferRU

DirectShortBufferRU(sun.nio.ch.DirectBuffer db,
                    int mark,
                    int pos,
                    int lim,
                    int cap,
                    int off)

Method Detail

slice

public ShortBuffer slice()

Description copied from class: ShortBuffer

Creates a new short buffer whose content is a shared subsequence of this buffer's content.

The content of the new buffer will start at this buffer's current position. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffers' position, limit, and mark values will be independent.

The new buffer's position will be zero, its capacity and its limit will be the number of shorts remaining in this buffer, and its mark will be undefined. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.

Overrides:

slice in class DirectShortBufferU

duplicate

public ShortBuffer duplicate()

Description copied from class: ShortBuffer

Creates a new short buffer that shares this buffer's content.

The content of the new buffer will be that of this buffer. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffers' position, limit, and mark values will be independent.

The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.

Overrides:

duplicate in class DirectShortBufferU

asReadOnlyBuffer

public ShortBuffer asReadOnlyBuffer()

Description copied from class: ShortBuffer

Creates a new, read-only short buffer that shares this buffer's content.

The content of the new buffer will be that of this buffer. Changes to this buffer's content will be visible in the new buffer; the new buffer itself, however, will be read-only and will not allow the shared content to be modified. The two buffers' position, limit, and mark values will be independent.

The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer.

If this buffer is itself read-only then this method behaves in exactly the same way as the duplicate method.

Overrides:

asReadOnlyBuffer in class DirectShortBufferU

put

public ShortBuffer put(short x)

Description copied from class: ShortBuffer

Relative put method (optional operation).

Writes the given short into this buffer at the current position, and then increments the position.

Overrides:

put in class DirectShortBufferU

put

public ShortBuffer put(int i,
                       short x)

Description copied from class: ShortBuffer

Absolute put method (optional operation).

Writes the given short into this buffer at the given index.

Overrides:

put in class DirectShortBufferU

put

public ShortBuffer put(ShortBuffer src)

Description copied from class: ShortBuffer

Relative bulk put method (optional operation).

This method transfers the shorts remaining in the given source buffer into this buffer. If there are more shorts remaining in the source buffer than in this buffer, that is, if src.remaining() > remaining(), then no shorts are transferred and a BufferOverflowException is thrown.

Otherwise, this method copies n = src.remaining() shorts from the given buffer into this buffer, starting at each buffer's current position. The positions of both buffers are then incremented by n.

In other words, an invocation of this method of the form dst.put(src) has exactly the same effect as the loop

     while (src.hasRemaining())
         dst.put(src.get()); 

except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.

Overrides:

put in class DirectShortBufferU

put

public ShortBuffer put(short[] src,
                       int offset,
                       int length)

Description copied from class: ShortBuffer

Relative bulk put method (optional operation).

This method transfers shorts into this buffer from the given source array. If there are more shorts to be copied from the array than remain in this buffer, that is, if length > remaining(), then no shorts are transferred and a BufferOverflowException is thrown.

Otherwise, this method copies length shorts from the given array into this buffer, starting at the given offset in the array and at the current position of this buffer. The position of this buffer is then incremented by length.

In other words, an invocation of this method of the form dst.put(src, off, len) has exactly the same effect as the loop

     for (int i = off; i < off + len; i++)
         dst.put(a[i]); 

except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.

Overrides:

put in class DirectShortBufferU

compact

public ShortBuffer compact()

Description copied from class: ShortBuffer

Compacts this buffer (optional operation).

The shorts between the buffer's current position and its limit, if any, are copied to the beginning of the buffer. That is, the short at index p = position() is copied to index zero, the short at index p + 1 is copied to index one, and so forth until the short at index limit() - 1 is copied to index n = limit() - 1 - p. The buffer's position is then set to n+1 and its limit is set to its capacity. The mark, if defined, is discarded.

The buffer's position is set to the number of shorts copied, rather than to zero, so that an invocation of this method can be followed immediately by an invocation of another relative put method.

Overrides:

compact in class DirectShortBufferU

isDirect

public boolean isDirect()

Description copied from class: ShortBuffer

Tells whether or not this short buffer is direct.

Overrides:

isDirect in class DirectShortBufferU

isReadOnly

public boolean isReadOnly()

Description copied from class: Buffer

Tells whether or not this buffer is read-only.

Overrides:

isReadOnly in class DirectShortBufferU

order

public ByteOrder order()

Description copied from class: ShortBuffer

Retrieves this buffer's byte order.

The byte order of a short buffer created by allocation or by wrapping an existing short array is the native order of the underlying hardware. The byte order of a short buffer created as a view of a byte buffer is that of the byte buffer at the moment that the view is created.

Overrides:

order in class DirectShortBufferU

viewedBuffer

public Object viewedBuffer()

Specified by:

viewedBuffer in interface sun.nio.ch.DirectBuffer

cleaner

public sun.misc.Cleaner cleaner()

Specified by:

cleaner in interface sun.nio.ch.DirectBuffer

address

public long address()

Specified by:

address in interface sun.nio.ch.DirectBuffer

get

public short get()

Description copied from class: ShortBuffer

Relative get method. Reads the short at this buffer's current position, and then increments the position.

Specified by:

get in class ShortBuffer

Returns:

The short at the buffer's current position

get

public short get(int i)

Description copied from class: ShortBuffer

Absolute get method. Reads the short at the given index.

Specified by:

get in class ShortBuffer

Parameters:

i - The index from which the short will be read

Returns:

The short at the given index

get

public ShortBuffer get(short[] dst,
                       int offset,
                       int length)

Description copied from class: ShortBuffer

Relative bulk get method.

This method transfers shorts from this buffer into the given destination array. If there are fewer shorts remaining in the buffer than are required to satisfy the request, that is, if length > remaining(), then no shorts are transferred and a BufferUnderflowException is thrown.

Otherwise, this method copies length shorts from this buffer into the given array, starting at the current position of this buffer and at the given offset in the array. The position of this buffer is then incremented by length.

In other words, an invocation of this method of the form src.get(dst, off, len) has exactly the same effect as the loop

     for (int i = off; i < off + len; i++)
         dst[i] = src.get(); 

except that it first checks that there are sufficient shorts in this buffer and it is potentially much more efficient.

Overrides:

get in class ShortBuffer

Parameters:

dst - The array into which shorts are to be written

offset - The offset within the array of the first short to be written; must be non-negative and no larger than dst.length

length - The maximum number of shorts to be written to the given array; must be non-negative and no larger than dst.length - offset

Returns:

This buffer