using Lucene.Net.Support;

namespace Lucene.Net.Benchmarks.ByTask.Tasks
{
    /*
     * Licensed to the Apache Software Foundation (ASF) under one or more
     * contributor license agreements.  See the NOTICE file distributed with
     * this work for additional information regarding copyright ownership.
     * The ASF licenses this file to You 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.
     */

    /// <summary>
    /// Test Search task which counts number of searches.
    /// </summary>
    public class CountingSearchTestTask : SearchTask
    {
        public static int numSearches = 0;
        public static long startMillis;
        public static long lastMillis;
        public static long prevLastMillis;

        private static object syncLock = new object();

        public CountingSearchTestTask(PerfRunData runData)
            : base(runData)
        {
        }

        public override int DoLogic()
        {
            int res = base.DoLogic();
            IncrNumSearches();
            return res;
        }

        private static void IncrNumSearches()
        {
            lock (syncLock)
            {
                prevLastMillis = lastMillis;
                lastMillis = Time.CurrentTimeMilliseconds();
                if (0 == numSearches)
                {
                    startMillis = prevLastMillis = lastMillis;
                }
                numSearches++;
            }
        }

        public long GetElapsedMillis()
        {
            return lastMillis - startMillis;
        }
    }
}
