/*******************************************************************************
* Copyright 2014 Analog Devices, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
********************************************************************************/
package com.analog.lyric.benchmarking;
import java.lang.management.GarbageCollectorMXBean;
import java.lang.management.ManagementFactory;
import java.util.ArrayList;
public class GCDataCollector implements DataCollector
{
ArrayList<GarbageCollectorMXBean> _gcs = new ArrayList<GarbageCollectorMXBean>();
long _countsPre;
long _timesPre;
long _countsPost;
long _timesPost;
public GCDataCollector()
{
for (GarbageCollectorMXBean gc : ManagementFactory
.getGarbageCollectorMXBeans())
{
_gcs.add(gc);
}
}
@Override
public void startCollection()
{
_countsPre = 0;
_timesPre = 0;
_countsPost = 0;
_timesPost = 0;
for (GarbageCollectorMXBean gc : _gcs)
{
_countsPre += gc.getCollectionCount();
_timesPre += gc.getCollectionTime();
}
}
@Override
public void finishCollection()
{
_countsPost = 0;
_timesPost = 0;
for (GarbageCollectorMXBean gc : _gcs)
{
_countsPost += gc.getCollectionCount();
_timesPost += gc.getCollectionTime();
}
}
@Override
public void postResults(BenchmarkRunIteration iteration)
{
iteration.getProperties().setProperty("gc.collection.count.pre",
String.valueOf(_countsPre));
iteration.getProperties().setProperty("gc.collection.time.milli.pre",
String.valueOf(_timesPre));
iteration.getProperties().setProperty("gc.collection.count.post",
String.valueOf(_countsPost));
iteration.getProperties().setProperty("gc.collection.time.milli.post",
String.valueOf(_timesPost));
}
}