mpi

Class Op

java.lang.Object

mpi.Op

All Implemented Interfaces:

Freeable

public final class Op
extends java.lang.Object
implements Freeable

This class represents MPI_Op.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	handle
protected UserFunction	uf

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Op(int type)
	Op(UserFunction function, boolean commute) Bind a user-defined global reduction operation to an Op object.

Method Summary

Modifier and Type	Method and Description
protected void	call(java.lang.Object invec, java.lang.Object inoutvec, int count)
void	free() Java binding of the MPI operation MPI_OP_FREE.
boolean	isCommutative() Test if the operation is conmutative.
boolean	isNull() Test if operation object is null.
protected void	setDatatype(Datatype t)

Methods inherited from class java.lang.Object

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

Field Detail

uf

protected final UserFunction uf

handle

protected long handle

Constructor Detail

Op

protected Op(int type)

Op

public Op(UserFunction function,
          boolean commute)

Bind a user-defined global reduction operation to an Op object.

Java binding of the MPI operation MPI_OP_CREATE.

Parameters:

function - user defined function

commute - true if commutative, false otherwise

Method Detail

setDatatype

protected void setDatatype(Datatype t)

call

protected void call(java.lang.Object invec,
                    java.lang.Object inoutvec,
                    int count)
             throws MPIException

Throws:

MPIException

isCommutative

public boolean isCommutative()

Test if the operation is conmutative.

Java binding of the MPI operation MPI_OP_COMMUTATIVE.

Returns:

true if commutative, false otherwise

free

public void free()
          throws MPIException

Java binding of the MPI operation MPI_OP_FREE.

Specified by:

free in interface Freeable

Throws:

MPIException - Signals that an MPI exception of some sort has occurred.

isNull

public boolean isNull()

Test if operation object is null.

Returns:

true if the operation object is null, false otherwise