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Benchmarking tools to test various changes to pcp

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/*
 * Copyright 2009-2017 Aconex
 *
 * 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 io.pcp.parfait.benchmark;

import java.lang.management.ManagementFactory;
import java.util.List;

import io.pcp.parfait.MonitoredCounter;

class CounterIncrementer implements Runnable{

    private final List counters;
    private final int iterations;
    private BlockedMetricCollector blockedMetricCollector;

    public CounterIncrementer(List counters, int iterations) {
        this.counters = counters;
        this.iterations = iterations;
    }

    @Override
    public void run() {
        ManagementFactory.getThreadMXBean().setThreadContentionMonitoringEnabled(true);

        this.blockedMetricCollector = new BlockedMetricCollector();
        for (int i = 0; i < iterations; i++) {

            for (MonitoredCounter counter : counters) {
                counter.inc();
            }
        }
        blockedMetricCollector.computeFinalValues();
    }

    public BlockedMetricCollector getBlockedMetricCollector() {
        return blockedMetricCollector;
    }
}