com.bigdata.ganglia.xdr

Class XDROutputBuffer

java.lang.Object

com.bigdata.ganglia.xdr.XDROutputBuffer

public class XDROutputBuffer
extends Object

A class for writing XDR data onto an internal buffer.

See Also:

RDF 4506

Constructor Summary

Constructors

Constructor and Description
XDROutputBuffer(int BUFFER_SIZE)

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getBuffer() Return the backing byte[] buffer.
int	getLength() Return the #of bytes written onto the buffer.
void	reset() Reset the buffer (clears the offset of the next byte to be written to zero).
void	writeDouble(double d) Puts a double into the buffer as 8 bytes, big-endian.
void	writeFloat(float f) Puts a float into the buffer as 4 bytes, big-endian.
void	writeInt(int i) Puts an integer into the buffer as 4 bytes, big-endian.
void	writeLong(long i) Puts a long into the buffer as 8 bytes, big-endian.
void	writeShort(short i) Puts a short integer into the buffer as 2 bytes, big-endian but w/ leading zeros (e.g., as if an int32 value).
void	writeString(String s) Puts a string into the buffer by first writing the size of the string as an int, followed by the bytes of the string, padded if necessary to a multiple of 4.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

XDROutputBuffer

public XDROutputBuffer(int BUFFER_SIZE)

Parameters:

BUFFER_SIZE - The size of the fixed capacity buffer.

Method Detail

reset

public void reset()

Reset the buffer (clears the offset of the next byte to be written to zero).

getBuffer

public byte[] getBuffer()

Return the backing byte[] buffer.

getLength

public int getLength()

Return the #of bytes written onto the buffer.

writeString

public void writeString(String s)

Puts a string into the buffer by first writing the size of the string as an int, followed by the bytes of the string, padded if necessary to a multiple of 4.

writeShort

public void writeShort(short i)

Puts a short integer into the buffer as 2 bytes, big-endian but w/ leading zeros (e.g., as if an int32 value). This is based on looking at ganglia data as received on the wire. For example, cpu_num is reported as ushort.

writeInt

public void writeInt(int i)

Puts an integer into the buffer as 4 bytes, big-endian.

writeLong

public void writeLong(long i)

Puts a long into the buffer as 8 bytes, big-endian.

writeFloat

public void writeFloat(float f)

Puts a float into the buffer as 4 bytes, big-endian.

writeDouble

public void writeDouble(double d)

Puts a double into the buffer as 8 bytes, big-endian.