| /* |
| * 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.Measurement; |
| import com.google.caliper.runner.Running.AfterExperimentMethods; |
| import com.google.caliper.runner.Running.BeforeExperimentMethods; |
| import com.google.common.collect.ImmutableSet; |
| |
| import java.lang.reflect.Method; |
| |
| import javax.inject.Inject; |
| |
| /** |
| * A {@link Worker} collects measurements on behalf of a particular Instrument. |
| */ |
| public abstract class Worker { |
| @Inject |
| @BeforeExperimentMethods |
| ImmutableSet<Method> beforeExperimentMethods; |
| |
| @Inject |
| @AfterExperimentMethods |
| ImmutableSet<Method> afterExperimentMethods; |
| |
| protected final Method benchmarkMethod; |
| protected final Object benchmark; |
| |
| protected Worker(Object benchmark, Method method) { |
| this.benchmark = benchmark; |
| this.benchmarkMethod = method; |
| } |
| |
| /** Initializes the benchmark object. */ |
| final void setUpBenchmark() throws Exception { |
| for (Method method : beforeExperimentMethods) { |
| method.invoke(benchmark); |
| } |
| } |
| |
| /** Called once before all measurements but after benchmark setup. */ |
| public void bootstrap() throws Exception {} |
| |
| /** |
| * Called immediately before {@link #measure()}. |
| * |
| * @param inWarmup whether we are in warmup, or taking real measurements. Used by |
| * some implementations to skip forcing GC to make warmup faster. |
| */ |
| public void preMeasure(boolean inWarmup) throws Exception {} |
| |
| /** Called immediately after {@link #measure()}. */ |
| public void postMeasure() throws Exception {} |
| |
| /** Template method for workers that produce multiple measurements. */ |
| public abstract Iterable<Measurement> measure() throws Exception; |
| |
| /** Tears down the benchmark object. */ |
| final void tearDownBenchmark() throws Exception { |
| for (Method method : afterExperimentMethods) { |
| method.invoke(benchmark); |
| } |
| } |
| } |