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Java Source Code / Java Documentation » Apache Harmony Java SE » java package » java.nio 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   java.nio.Buffer
      java.nio.ByteBuffer
         java.nio.BaseByteBuffer
            java.nio.DirectByteBuffer

All known Subclasses:   java.nio.ReadWriteDirectByteBuffer,  java.nio.ReadOnlyDirectByteBuffer,
DirectByteBuffer
abstract class DirectByteBuffer extends BaseByteBuffer implements DirectBuffer(Code)
DirectByteBuffer, ReadWriteDirectByteBuffer and ReadOnlyDirectByteBuffer compose the implementation of platform memory based byte buffers.

DirectByteBuffer implements all the shared readonly methods and is extended by the other two classes.

All methods are marked final for runtime performance.


Inner Class :final static class SafeAddress

Field Summary
final protected  intoffset
    
final protected  SafeAddresssafeAddress
    

Constructor Summary
 DirectByteBuffer(int capacity)
    
 DirectByteBuffer(SafeAddress address, int capacity, int offset)
    

Method Summary
final public  voidaddressValidityCheck()
    
final public  voidfree()
     Explicitly free the memory used by this direct byte buffer.
final public  ByteBufferget(byte[] dest, int off, int len)
    
final public  byteget()
    
final public  byteget(int index)
    
final public  PlatformAddressgetBaseAddress()
    
final public  intgetByteCapacity()
    
final public  doublegetDouble()
    
final public  doublegetDouble(int index)
    
final public  PlatformAddressgetEffectiveAddress()
     Answers the platform address of the start of this buffer instance. You must not attempt to free the returned address!! It may not be an address that was explicitly malloc'ed (i.e.
final public  floatgetFloat()
    
final public  floatgetFloat(int index)
    
final public  intgetInt()
    
final public  intgetInt(int index)
    
final public  longgetLong()
    
final public  longgetLong(int index)
    
final public  shortgetShort()
    
final public  shortgetShort(int index)
    
final public  booleanisAddressValid()
    
final public  booleanisDirect()
    
final protected  byte[]protectedArray()
    
final protected  intprotectedArrayOffset()
    
final protected  booleanprotectedHasArray()
    

Field Detail
offset
final protected int offset(Code)



safeAddress
final protected SafeAddress safeAddress(Code)




Constructor Detail
DirectByteBuffer
DirectByteBuffer(int capacity)(Code)



DirectByteBuffer
DirectByteBuffer(SafeAddress address, int capacity, int offset)(Code)




Method Detail
addressValidityCheck
final public void addressValidityCheck()(Code)



free
final public void free()(Code)
Explicitly free the memory used by this direct byte buffer. If the memory has already been freed then this is a no-op. Once the memory has been freed then operations requiring access to the memory will throw an IllegalStateException.

Note this is is possible that the memory is freed by code that reaches into the address and explicitly frees it 'beneith' us -- this is bad form.




get
final public ByteBuffer get(byte[] dest, int off, int len)(Code)



get
final public byte get()(Code)



get
final public byte get(int index)(Code)



getBaseAddress
final public PlatformAddress getBaseAddress()(Code)



getByteCapacity
final public int getByteCapacity()(Code)



getDouble
final public double getDouble()(Code)



getDouble
final public double getDouble(int index)(Code)



getEffectiveAddress
final public PlatformAddress getEffectiveAddress()(Code)
Answers the platform address of the start of this buffer instance. You must not attempt to free the returned address!! It may not be an address that was explicitly malloc'ed (i.e. if this buffer is the result of a split); and it may be memory shared by multiple buffers.

If you can guarantee that you want to free the underlying memory call the #free() method on this instance -- generally applications will rely on the garbage collector to autofree this memory.

the effective address of the start of the buffer.
throws:
  IllegalStateException - if this buffer address is known to have been freedpreviously.



getFloat
final public float getFloat()(Code)



getFloat
final public float getFloat(int index)(Code)



getInt
final public int getInt()(Code)



getInt
final public int getInt(int index)(Code)



getLong
final public long getLong()(Code)



getLong
final public long getLong(int index)(Code)



getShort
final public short getShort()(Code)



getShort
final public short getShort(int index)(Code)



isAddressValid
final public boolean isAddressValid()(Code)



isDirect
final public boolean isDirect()(Code)



protectedArray
final protected byte[] protectedArray()(Code)



protectedArrayOffset
final protected int protectedArrayOffset()(Code)



protectedHasArray
final protected boolean protectedHasArray()(Code)



Methods inherited from java.nio.BaseByteBuffer
final public CharBuffer asCharBuffer()(Code)(Java Doc)
final public DoubleBuffer asDoubleBuffer()(Code)(Java Doc)
final public FloatBuffer asFloatBuffer()(Code)(Java Doc)
final public IntBuffer asIntBuffer()(Code)(Java Doc)
final public LongBuffer asLongBuffer()(Code)(Java Doc)
final public ShortBuffer asShortBuffer()(Code)(Java Doc)
final public char getChar()(Code)(Java Doc)
final public char getChar(int index)(Code)(Java Doc)
final public ByteBuffer putChar(char value)(Code)(Java Doc)
final public ByteBuffer putChar(int index, char value)(Code)(Java Doc)

Fields inherited from java.nio.ByteBuffer
Endianness order(Code)(Java Doc)

Methods inherited from java.nio.ByteBuffer
public static ByteBuffer allocate(int capacity)(Code)(Java Doc)
public static ByteBuffer allocateDirect(int capacity)(Code)(Java Doc)
final public byte[] array()(Code)(Java Doc)
final public int arrayOffset()(Code)(Java Doc)
abstract public CharBuffer asCharBuffer()(Code)(Java Doc)
abstract public DoubleBuffer asDoubleBuffer()(Code)(Java Doc)
abstract public FloatBuffer asFloatBuffer()(Code)(Java Doc)
abstract public IntBuffer asIntBuffer()(Code)(Java Doc)
abstract public LongBuffer asLongBuffer()(Code)(Java Doc)
abstract public ByteBuffer asReadOnlyBuffer()(Code)(Java Doc)
abstract public ShortBuffer asShortBuffer()(Code)(Java Doc)
abstract public ByteBuffer compact()(Code)(Java Doc)
public int compareTo(ByteBuffer otherBuffer)(Code)(Java Doc)
abstract public ByteBuffer duplicate()(Code)(Java Doc)
public boolean equals(Object other)(Code)(Java Doc)
abstract public byte get()(Code)(Java Doc)
public ByteBuffer get(byte[] dest)(Code)(Java Doc)
public ByteBuffer get(byte[] dest, int off, int len)(Code)(Java Doc)
abstract public byte get(int index)(Code)(Java Doc)
abstract public char getChar()(Code)(Java Doc)
abstract public char getChar(int index)(Code)(Java Doc)
abstract public double getDouble()(Code)(Java Doc)
abstract public double getDouble(int index)(Code)(Java Doc)
abstract public float getFloat()(Code)(Java Doc)
abstract public float getFloat(int index)(Code)(Java Doc)
abstract public int getInt()(Code)(Java Doc)
abstract public int getInt(int index)(Code)(Java Doc)
abstract public long getLong()(Code)(Java Doc)
abstract public long getLong(int index)(Code)(Java Doc)
abstract public short getShort()(Code)(Java Doc)
abstract public short getShort(int index)(Code)(Java Doc)
final public boolean hasArray()(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
abstract public boolean isDirect()(Code)(Java Doc)
final public ByteOrder order()(Code)(Java Doc)
final public ByteBuffer order(ByteOrder byteOrder)(Code)(Java Doc)
ByteBuffer orderImpl(ByteOrder byteOrder)(Code)(Java Doc)
abstract byte[] protectedArray()(Code)(Java Doc)
abstract int protectedArrayOffset()(Code)(Java Doc)
abstract boolean protectedHasArray()(Code)(Java Doc)
abstract public ByteBuffer put(byte b)(Code)(Java Doc)
final public ByteBuffer put(byte[] src)(Code)(Java Doc)
public ByteBuffer put(byte[] src, int off, int len)(Code)(Java Doc)
public ByteBuffer put(ByteBuffer src)(Code)(Java Doc)
abstract public ByteBuffer put(int index, byte b)(Code)(Java Doc)
abstract public ByteBuffer putChar(char value)(Code)(Java Doc)
abstract public ByteBuffer putChar(int index, char value)(Code)(Java Doc)
abstract public ByteBuffer putDouble(double value)(Code)(Java Doc)
abstract public ByteBuffer putDouble(int index, double value)(Code)(Java Doc)
abstract public ByteBuffer putFloat(float value)(Code)(Java Doc)
abstract public ByteBuffer putFloat(int index, float value)(Code)(Java Doc)
abstract public ByteBuffer putInt(int value)(Code)(Java Doc)
abstract public ByteBuffer putInt(int index, int value)(Code)(Java Doc)
abstract public ByteBuffer putLong(long value)(Code)(Java Doc)
abstract public ByteBuffer putLong(int index, long value)(Code)(Java Doc)
abstract public ByteBuffer putShort(short value)(Code)(Java Doc)
abstract public ByteBuffer putShort(int index, short value)(Code)(Java Doc)
abstract public ByteBuffer slice()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
public static ByteBuffer wrap(byte[] array)(Code)(Java Doc)
public static ByteBuffer wrap(byte[] array, int start, int len)(Code)(Java Doc)

Fields inherited from java.nio.Buffer
final static int UNSET_MARK(Code)(Java Doc)
final int capacity(Code)(Java Doc)
int limit(Code)(Java Doc)
int mark(Code)(Java Doc)
int position(Code)(Java Doc)

Methods inherited from java.nio.Buffer
final public int capacity()(Code)(Java Doc)
final public Buffer clear()(Code)(Java Doc)
final public Buffer flip()(Code)(Java Doc)
final public boolean hasRemaining()(Code)(Java Doc)
abstract public boolean isReadOnly()(Code)(Java Doc)
final public int limit()(Code)(Java Doc)
final public Buffer limit(int newLimit)(Code)(Java Doc)
final public Buffer mark()(Code)(Java Doc)
final public int position()(Code)(Java Doc)
final public Buffer position(int newPosition)(Code)(Java Doc)
final public int remaining()(Code)(Java Doc)
final public Buffer reset()(Code)(Java Doc)
final public Buffer rewind()(Code)(Java Doc)

Methods inherited from java.lang.Object
protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object object)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final public Class<? extends Object> getClass()(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
final public void notify()(Code)(Java Doc)
final public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final public void wait(long millis, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait(long millis) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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