https://github.com/Terracotta-OSS/statistics: A statistics framework used inside Ehcache and the Terracotta products 
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 * All content copyright Terracotta, Inc., unless otherwise indicated.
 *
 * 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 org.terracotta.statistics.observer;


Event observers track the occurrence of singular events.


Events can have an associated parameter the use of which is left up to
the implementors of both the producer and consumer of events.

/**
 * Event observers track the occurrence of singular events.
 * <p>
 * Events can have an associated parameter the use of which is left up to
 * the implementors of both the producer and consumer of events.
 */
public interface ChainedEventObserver extends ChainedObserver {

  
Called to indicate an event happened.

Params:
  • time –    the clock at event completion in ns
  • latency – the event latency in ns
/**
   * Called to indicate an event happened.
   *
   * @param time    the clock at event completion in ns
   * @param latency the event latency in ns
   */
  void event(long time, long latency);
}