edu.rit.mp.buf

Class SharedObjectArrayBuf_1<T>

java.lang.Object

edu.rit.mp.Buf

edu.rit.mp.ObjectBuf<T>

edu.rit.mp.buf.SharedObjectArrayBuf<T>

edu.rit.mp.buf.SharedObjectArrayBuf_1<T>

Type Parameters:

T - Data type of the objects in the buffer.

public class SharedObjectArrayBuf_1<T>
extends SharedObjectArrayBuf<T>

Class SharedObjectArrayBuf_1 provides a buffer for a multiple thread safe array of object items sent or received using the Message Protocol (MP). The array element stride must be 1. While an instance of class SharedObjectArrayBuf_1 may be constructed directly, normally you will use a factory method in class ObjectBuf. See that class for further information.

Constructor Summary

Constructors

Constructor and Description
SharedObjectArrayBuf_1(SharedObjectArray<T> theArray, Range theRange) Construct a new shared object array buffer.

Method Summary

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

Methods inherited from class edu.rit.mp.ObjectBuf

buffer, buffer, buffer, buffer, buffer, buffer, colSliceBuffer, colSliceBuffers, copy, emptyBuffer, fill, getTemporaryBuf, objectBuffer, objectBuffer, patchBuffer, patchBuffers, reset, 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

SharedObjectArrayBuf_1

public SharedObjectArrayBuf_1(SharedObjectArray<T> theArray,
                              Range theRange)

Construct a new shared object 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 T 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 SharedObjectArrayBuf<T>

Parameters:

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

Returns:

Item at index i.

put

public void put(int i,
                T 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 SharedObjectArrayBuf<T>

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 SharedObjectArrayBuf<T>

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.