edu.rit.mp.buf

Class LongArrayBuf_1

java.lang.Object

edu.rit.mp.Buf

edu.rit.mp.LongBuf

edu.rit.mp.buf.LongArrayBuf

edu.rit.mp.buf.LongArrayBuf_1

public class LongArrayBuf_1
extends LongArrayBuf

Class LongArrayBuf_1 provides a buffer for an array of long items sent or received using the Message Protocol (MP). The array element stride must be 1. While an instance of class LongArrayBuf may be constructed directly, normally you will use a factory method in class LongBuf. See that class for further information.

Constructor Summary

Constructors

Constructor and Description
LongArrayBuf_1(long[] theArray, Range theRange) Construct a new long array buffer.

Method Summary

Modifier and Type	Method and Description
long	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, long item) Store the given item in this buffer.

Methods inherited from class edu.rit.mp.buf.LongArrayBuf

copy

Methods inherited from class edu.rit.mp.LongBuf

buffer, buffer, buffer, buffer, buffer, buffer, colSliceBuffer, colSliceBuffers, 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

LongArrayBuf_1

public LongArrayBuf_1(long[] theArray,
                      Range theRange)

Construct a new long array buffer.

Parameters:

theArray - Array.

theRange - Range of array elements to include in the buffer. The stride is assumed to be 1.

Method Detail

get

public long 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.

Overrides:

get in class LongArrayBuf

Parameters:

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

Returns:

Item at index i.

put

public void put(int i,
                long 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.

Overrides:

put in class LongArrayBuf

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.

Overrides:

getReductionBuf in class LongArrayBuf

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.