[ceph.git] / ceph / src / rocksdb / java / src / main / java / org / rocksdb / StatisticsCollectorCallback.java

// Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
//  This source code is licensed under both the GPLv2 (found in the
//  COPYING file in the root directory) and Apache 2.0 License
//  (found in the LICENSE.Apache file in the root directory).

package org.rocksdb;

/**
 * Callback interface provided to StatisticsCollector.
 *
 * Thread safety:
 * StatisticsCollector doesn't make any guarantees about thread safety.
 * If the same reference of StatisticsCollectorCallback is passed to multiple
 * StatisticsCollector references, then its the responsibility of the
 * user to make StatisticsCollectorCallback's implementation thread-safe.
 *
 */
public interface StatisticsCollectorCallback {
  /**
   * Callback function to get ticker values.
   * @param tickerType Ticker type.
   * @param tickerCount Value of ticker type.
  */
  void tickerCallback(TickerType tickerType, long tickerCount);

  /**
   * Callback function to get histogram values.
   * @param histType Histogram type.
   * @param histData Histogram data.
  */
  void histogramCallback(HistogramType histType, HistogramData histData);
}
Commit	Line	Data
7c673cae	1	// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
11fdf7f2 TL	2	// This source code is licensed under both the GPLv2 (found in the
	3	// COPYING file in the root directory) and Apache 2.0 License
	4	// (found in the LICENSE.Apache file in the root directory).
7c673cae FG	5
	6	package org.rocksdb;
	7
	8	/**
	9	* Callback interface provided to StatisticsCollector.
	10	*
	11	* Thread safety:
	12	* StatisticsCollector doesn't make any guarantees about thread safety.
	13	* If the same reference of StatisticsCollectorCallback is passed to multiple
	14	* StatisticsCollector references, then its the responsibility of the
	15	* user to make StatisticsCollectorCallback's implementation thread-safe.
	16	*
	17	*/
	18	public interface StatisticsCollectorCallback {
	19	/**
	20	* Callback function to get ticker values.
	21	* @param tickerType Ticker type.
	22	* @param tickerCount Value of ticker type.
	23	*/
	24	void tickerCallback(TickerType tickerType, long tickerCount);
	25
	26	/**
	27	* Callback function to get histogram values.
	28	* @param histType Histogram type.
	29	* @param histData Histogram data.
	30	*/
	31	void histogramCallback(HistogramType histType, HistogramData histData);
	32	}