/*
This file is part of JOP, the Java Optimized Processor
see <http://www.jopdesign.com/>
Copyright (C) Thomas B. Preusser <thomas.preusser@tu-dresden.de>
This program 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.
This program 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package jembench;
/**
* Base class of all StreamBenchmarks.
*
* @author Thomas B. Preusser <thomas.preusser@tu-dresden.de>
* @author Martin Schoeberl (martin@jopdesign.com)
*/
public abstract class StreamBenchmark extends Benchmark {
ParallelExecutor pe;
protected StreamBenchmark() {
pe = ParallelExecutor.getExecutor();
}
public int measure() {
int start, cnt, time;
// run the benchmark loop 1 times minimum
cnt = 1;
time = 0;
Runnable[] workers = Runner.distributeWorklist(getWorkers(), Util.getNrOfCores());
pe.start();
while (time < MIN_EXECUTE) {
cnt <<= 1;
if (cnt < 0) {
break;
}
start = Util.getTimeMillis();
reset(cnt);
Runner.reset();
pe.executeParallel(workers);
time = Util.getTimeMillis() - start;
}
// let the worker threads terminate
pe.stop();
// save raw values
setRawResult(cnt, time);
// return iterations per second
return getResult();
}
/**
* MS: what is this for?
* @return
*/
protected abstract int getDepth();
public abstract Runnable[] getWorkers();
/**
* Reset the benchmark for a new run with cnt iterations.
*/
public abstract void reset(int cnt);
/**
* MS: what for are we using this?
* @return
*/
public abstract boolean isFinished();
}