edu.rit.mp.buf

Class SharedUnsigned8BitIntegerArrayBuf

java.lang.Object

edu.rit.mp.Buf

edu.rit.mp.Unsigned8BitIntegerBuf

edu.rit.mp.buf.SharedUnsigned8BitIntegerArrayBuf

Direct Known Subclasses:

SharedUnsigned8BitIntegerArrayBuf_1

public class SharedUnsigned8BitIntegerArrayBuf
extends Unsigned8BitIntegerBuf

Class SharedUnsigned8BitIntegerArrayBuf provides a buffer for a multiple thread safe array of unsigned 8-bit integer items sent or received using the Message Protocol (MP). The array element stride may be 1 or greater than 1. While an instance of class SharedUnsigned8BitIntegerArrayBuf may be constructed directly, normally you will use a factory method in class Unsigned8BitIntegerBuf. See that class for further information.

Constructor Summary

Constructors

Constructor and Description
SharedUnsigned8BitIntegerArrayBuf(SharedIntegerArray theArray, Range theRange) Construct a new shared unsigned 8-bit integer array buffer.

Method Summary

Modifier and Type	Method and Description
int	get(int i) Obtain the given item from this buffer.
Buf	getReductionBuf(Op op) Create a buffer for performing parallel reduction using the given binary operation.
void	put(int i, int item) Store the given item in this buffer.

Methods inherited from class edu.rit.mp.Unsigned8BitIntegerBuf

buffer, buffer, buffer, buffer, buffer, buffer, colSliceBuffer, colSliceBuffers, copy, emptyBuffer, fill, getTemporaryBuf, patchBuffer, patchBuffers, rowSliceBuffer, rowSliceBuffers, sliceBuffer, sliceBuffer, sliceBuffers, sliceBuffers

Methods inherited from class edu.rit.mp.Buf

length

Methods inherited from class java.lang.Object

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

Constructor Detail

SharedUnsigned8BitIntegerArrayBuf

public SharedUnsigned8BitIntegerArrayBuf(SharedIntegerArray theArray,
                                         Range theRange)

Construct a new shared unsigned 8-bit integer array buffer.

Parameters:

theArray - Shared array.

theRange - Range of array elements to include in the buffer.

Method Detail

get

public int get(int i)

Obtain the given item from this buffer.

The get() method must not block the calling thread; if it does, all message I/O in MP will be blocked.

Specified by:

get in class Unsigned8BitIntegerBuf

Parameters:

i - Item index in the range 0 .. length()-1.

Returns:

Item at index i.

put

public void put(int i,
                int item)

Store the given item in this buffer.

The put() method must not block the calling thread; if it does, all message I/O in MP will be blocked.

Specified by:

put in class Unsigned8BitIntegerBuf

Parameters:

i - Item index in the range 0 .. length()-1.

item - Item to be stored at index i.

getReductionBuf

public Buf getReductionBuf(Op op)

Create a buffer for performing parallel reduction using the given binary operation. The results of the reduction are placed into this buffer.

Specified by:

getReductionBuf in class Buf

Parameters:

op - Binary operation.

Throws:

java.lang.ClassCastException - (unchecked exception) Thrown if this buffer's element data type and the given binary operation's argument data type are not the same.