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/*

Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016.  All rights reserved.

Contact:
     SYSTAP, LLC DBA Blazegraph
     2501 Calvert ST NW #106
     Washington, DC 20008
     [email protected]

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/
/*
 * Created on Apr 15, 2009
 */

package com.bigdata.util.concurrent;

import java.util.concurrent.atomic.AtomicLong;

import com.bigdata.journal.WriteExecutorService;

/**
 * Extended for the {@link WriteExecutorService}.
 * 
 * @author Bryan Thompson
 * @version $Id$
 * 
 * @todo add counter task checkpoint time (as part of task service time) and
 *       report out as moving average.
 */
public class WriteTaskCounters extends TaskCounters {

    /**
     * 
     */
    public WriteTaskCounters() {

    }

    /**
     * Cumulative elapsed time in nanoseconds consumed by tasks while waiting
     * for an resource lock.
     */
    final public AtomicLong lockWaitingNanoTime = new AtomicLong();

    /**
     * Cumulative elapsed time in nanoseconds consumed by tasks awaiting group
     * commit.
     */
    final public AtomicLong commitWaitingNanoTime = new AtomicLong();

    /**
     * Cumulative elapsed time in nanoseconds servicing group commit.
     */
    final public AtomicLong commitServiceNanoTime = new AtomicLong();

}