content: package org.apache.cassandra.stress.report;
  /*
   *
   * 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.
   *
   */
  
  
  import org.apache.cassandra.stress.StressAction.MeasurementSink;
  
  import static org.apache.cassandra.utils.Clock.Global.nanoTime;
  
  // a timer - this timer must be used by a single thread, and co-ordinates with other timers by
  public final class Timer
  {
      private final String opType;
      private final MeasurementSink sink;
  
      // event timing info
      private long intendedTimeNs;
      private long startTimeNs;
  
      public Timer(String opType, MeasurementSink sink)
      {
          this.opType = opType;
          this.sink = sink;
      }
  
  
      public void stop(long partitionCount, long rowCount, boolean error)
      {
          sink.record(opType, intendedTimeNs, startTimeNs, nanoTime(), rowCount, partitionCount, error);
          resetTimes();
      }
  
      private void resetTimes()
      {
          intendedTimeNs = startTimeNs = 0;
      }
  
      public void intendedTimeNs(long v)
      {
          intendedTimeNs = v;
      }
  
      public void start()
      {
          startTimeNs = nanoTime();
      }
  }
  