/**
* Copyright (c) 2014 Richard Warburton (richard.warburton@gmail.com)
* <p>
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
* <p>
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
* <p>
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
**/
package com.insightfullogic.honest_profiler.core.filters;
import static com.insightfullogic.honest_profiler.core.filters.Filter.Mode.GE;
import static java.lang.Double.doubleToLongBits;
import java.util.function.BiPredicate;
import com.insightfullogic.honest_profiler.core.profiles.Profile;
public final class ThreadSampleFilter implements Filter
{
private static final double DEFAULT_MIN_PROPORTION_OF_SAMPLES = 0.01;
private final double minProportionOfSamples;
private Mode mode;
private BiPredicate<Integer, Double> filterMethod;
public ThreadSampleFilter()
{
this(GE, DEFAULT_MIN_PROPORTION_OF_SAMPLES);
}
public ThreadSampleFilter(double minProportionOfSamples)
{
this(GE, minProportionOfSamples);
}
public ThreadSampleFilter(Mode mode, double minProportionOfSamples)
{
this.mode = mode;
this.minProportionOfSamples = minProportionOfSamples;
generateFilterMethod();
}
private void generateFilterMethod()
{
switch (mode)
{
case GE:
filterMethod = (nrSamples, minNrSamples) -> nrSamples < minNrSamples;
break;
case GT:
filterMethod = (nrSamples, minNrSamples) -> nrSamples <= minNrSamples;
break;
case LE:
filterMethod = (nrSamples, minNrSamples) -> nrSamples > minNrSamples;
break;
case LT:
filterMethod = (nrSamples, minNrSamples) -> nrSamples >= minNrSamples;
break;
case EQUALS:
filterMethod = (nrSamples,
minNrSamples) -> Double.compare(nrSamples, minNrSamples) == 0;
break;
default:
throw new RuntimeException(
"Filter Mode " + mode + " not supported in ThreadSampleFilter.");
}
}
@Override
public void filter(Profile profile)
{
final double minimumNumberOfSamples = getMinimumNumberOfSamples(profile);
profile.getTrees().removeIf(tree -> filterMethod.test(tree.getNumberOfSamples(), minimumNumberOfSamples));
}
private double getMinimumNumberOfSamples(Profile profile)
{
return profile.getTraceCount() * minProportionOfSamples;
}
@Override
public boolean equals(Object o)
{
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ThreadSampleFilter that = (ThreadSampleFilter) o;
return (mode == that.mode)
&& (Double.compare(that.minProportionOfSamples, minProportionOfSamples) == 0);
}
@Override
public int hashCode()
{
long temp = doubleToLongBits(minProportionOfSamples);
return (37 * mode.ordinal()) + (int) (temp ^ (temp >>> 32));
}
}