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//******************************************************************************
//
// File: Test21.java
// Package: edu.rit.pj.test
// Unit: Class edu.rit.pj.test.Test21
//
// This Java source file is copyright (C) 2010 by Alan Kaminsky. All rights
// reserved. For further information, contact the author, Alan Kaminsky, at
// ark@cs.rit.edu.
//
// This Java source file is part of the Parallel Java Library ("PJ"). PJ is free
// software; you can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// PJ is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//
// Linking this library statically or dynamically with other modules is making a
// combined work based on this library. Thus, the terms and conditions of the
// GNU General Public License cover the whole combination.
//
// As a special exception, the copyright holders of this library give you
// permission to link this library with independent modules to produce an
// executable, regardless of the license terms of these independent modules, and
// to copy and distribute the resulting executable under terms of your choice,
// provided that you also meet, for each linked independent module, the terms
// and conditions of the license of that module. An independent module is a
// module which is not derived from or based on this library. If you modify this
// library, you may extend this exception to your version of the library, but
// you are not obligated to do so. If you do not wish to do so, delete this
// exception statement from your version.
//
// A copy of the GNU General Public License is provided in the file gpl.txt. You
// may also obtain a copy of the GNU General Public License on the World Wide
// Web at http://www.gnu.org/licenses/gpl.html.
//
//******************************************************************************
package edu.rit.pj.test;
import edu.rit.pj.Comm;
import edu.rit.pj.WorkerIntegerForLoop;
import edu.rit.pj.WorkerIntegerStrideForLoop;
import edu.rit.pj.WorkerRegion;
import edu.rit.pj.WorkerTeam;
/**
* Class Test21 is a unit test main program for classes {@linkplain
* edu.rit.pj.WorkerTeam WorkerTeam}, {@linkplain edu.rit.pj.WorkerRegion
* WorkerRegion}, and {@linkplain edu.rit.pj.WorkerIntegerForLoop
* WorkerIntegerForLoop}. A worker for loop iterates over a given range of
* indexes. Each iteration prints the loop index and the worker index executing
* that loop index.
* <P>
* Usage: java [ -Dpj.np=<I>K</I> ] [ -Dpj.schedule=<I>schedule</I> ]
* edu.rit.pj.test.Test21 <I>lb</I> <I>ub</I> <I>stride</I>
* <BR><I>K</I> = Number of parallel processes
* <BR><I>schedule</I> = Worker for loop schedule
* <BR><I>lb</I> = Loop index lower bound, inclusive
* <BR><I>ub</I> = Loop index upper bound, inclusive
* <BR><I>stride</I> = Loop stride
*
* @author Alan Kaminsky
* @version 19-Jan-2010
*/
public class Test21
{
// Prevent construction.
private Test21()
{
}
// Main program.
/**
* Unit test main program.
*/
public static void main
(String[] args)
throws Throwable
{
Comm.init (args);
if (args.length != 3) usage();
final int lb = Integer.parseInt (args[0]);
final int ub = Integer.parseInt (args[1]);
final int stride = Integer.parseInt (args[2]);
new WorkerTeam().execute (new WorkerRegion()
{
public void run() throws Exception
{
final int w = getThreadIndex();
System.out.printf ("Begin thread %d%n", w);
if (stride == 1)
{
execute (lb, ub, new WorkerIntegerForLoop()
{
public void run (int first, int last)
{
for (int i = first; i <= last; ++ i)
{
System.out.printf
("i = %d, thread = %d%n", i, w);
}
}
});
}
else
{
execute (lb, ub, stride, new WorkerIntegerStrideForLoop()
{
public void run (int first, int last, int stride)
{
for (int i = first; i <= last; i += stride)
{
System.out.printf
("i = %d, thread = %d%n", i, w);
}
}
});
}
System.out.printf ("End thread %d%n", w);
}
});
}
// Hidden operations.
/**
* Print a usage message and exit.
*/
private static void usage()
{
System.err.println ("Usage: java [-Dpj.np=<K>] [-Dpj.schedule=<schedule>] edu.rit.pj.test.Test21 <lb> <ub> <stride>");
System.err.println ("<K> = Number of parallel processes");
System.err.println ("<schedule> = Worker for loop schedule");
System.err.println ("<lb> = Loop index lower bound, inclusive");
System.err.println ("<ub> = Loop index upper bound, inclusive");
System.err.println ("<stride> = Loop stride");
System.exit (1);
}
}
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