edu.rit.mp.buf

Class SharedFloatArrayBuf_1

java.lang.Object

edu.rit.mp.Buf

edu.rit.mp.FloatBuf

edu.rit.mp.buf.SharedFloatArrayBuf

edu.rit.mp.buf.SharedFloatArrayBuf_1

public class SharedFloatArrayBuf_1
extends SharedFloatArrayBuf

Class SharedFloatArrayBuf_1 provides a buffer for a multiple thread safe array of float items sent or received using the Message Protocol (MP). The array element stride must be 1. While an instance of class SharedFloatArrayBuf_1 may be constructed directly, normally you will use a factory method in class FloatBuf. See that class for further information.

Constructor Summary

Constructors

Constructor and Description
SharedFloatArrayBuf_1(SharedFloatArray theArray, Range theRange) Construct a new shared float array buffer.

Method Summary

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

Methods inherited from class edu.rit.mp.FloatBuf

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

SharedFloatArrayBuf_1

public SharedFloatArrayBuf_1(SharedFloatArray theArray,
                             Range theRange)

Construct a new shared float array buffer.

Parameters:

theArray - Shared array.

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

Method Detail

get

public float 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 SharedFloatArrayBuf

Parameters:

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

Returns:

Item at index i.

put

public void put(int i,
                float 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 SharedFloatArrayBuf

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 SharedFloatArrayBuf

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.