/*
* Aleph Toolkit
*
* Copyright 1997, Brown University, Providence, RI.
*
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose other than its incorporation into a
* commercial product is hereby granted without fee, provided that the
* above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Brown University not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission.
*
* BROWN UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ANY
* PARTICULAR PURPOSE. IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE FOR
* ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package aleph.bench;
import aleph.Aleph;
import aleph.AlephException;
import aleph.GlobalObject;
import aleph.Join;
import aleph.PE;
import aleph.RemoteThread;
import java.util.Iterator;
/**
* Test Null remote thread creation.
*
* @author Maurice Herlihy
* @date November 97
**/
public class Counter2 {
static class CounterThread extends RemoteThread {
GlobalObject object;
CounterThread(GlobalObject object) {
this.object = object;
}
public void run() {
try{
SharedCounter shared = (SharedCounter) object.open("w");
shared.value++;
Aleph.debug("shared.value = " + shared.value);
object.release();
} catch (AlephException e) {}
}
}
public static void main(String[] args) {
GlobalObject object = new GlobalObject(new SharedCounter());
CounterThread thread = new CounterThread(object);
Join join = new Join();
int howMany = PE.numPEs();
int iterations = 100;
try {
if ( args.length > 0)
iterations = Integer.parseInt(args[0]);
} catch (NumberFormatException e) {
System.err.println("usage: Counter2 <#iterations>");
Aleph.exit(1);
}
System.out.println("Counter iterations: " + iterations);
System.out.println("#PEs\ttime");
long duration = 0;
for (int j = 0; j < iterations; j++) {
long start = System.currentTimeMillis();
for (Iterator e = PE.allPEs(); e.hasNext(); )
thread.start((PE) e.next(), join);
join.waitFor();
long stop = System.currentTimeMillis();
duration += (stop - start);
}
System.out.println(howMany + "\t" + (double) duration / (double)
iterations);
try {
SharedCounter shared = (SharedCounter) object.open("w");
System.out.println("Final counter value: " + shared.value);
object.release();
} catch (AlephException e) {}
}
public static class SharedCounter implements java.io.Serializable {
public long value;
}
}