/*
* Copyright (C) 2011 Google 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.google.caliper.worker;
import com.google.caliper.model.ArbitraryMeasurement;
import com.google.caliper.model.Measurement;
import com.google.caliper.model.Value;
import com.google.caliper.runner.Running.Benchmark;
import com.google.caliper.runner.Running.BenchmarkMethod;
import com.google.caliper.util.Util;
import com.google.common.collect.ImmutableSet;
import com.google.inject.Inject;
import java.lang.reflect.Method;
import java.util.Map;
/**
* Worker for arbitrary measurements.
*/
public final class ArbitraryMeasurementWorker extends Worker {
private final Options options;
private final String unit;
private final String description;
@Inject ArbitraryMeasurementWorker(
@Benchmark Object benchmark,
@BenchmarkMethod Method method,
@WorkerOptions Map<String, String> workerOptions) {
super(benchmark, method);
this.options = new Options(workerOptions);
ArbitraryMeasurement annotation = method.getAnnotation(ArbitraryMeasurement.class);
this.unit = annotation.units();
this.description = annotation.description();
}
@Override public void preMeasure() throws Exception {
if (options.gcBeforeEach) {
Util.forceGc();
}
}
@Override public Iterable<Measurement> measure() throws Exception {
double measured = (Double) benchmarkMethod.invoke(benchmark);
return ImmutableSet.of(new Measurement.Builder()
.value(Value.create(measured, unit))
.weight(1)
.description(description)
.build());
}
private static class Options {
final boolean gcBeforeEach;
Options(Map<String, String> options) {
this.gcBeforeEach = Boolean.parseBoolean(options.get("gcBeforeEach"));
}
}
}