25682d1596
Summary: This diff merges pull request #208. Contributor: ankgup87 [Java] Optimize statistics collector * Optimize statistics collector by collecting statistics of multiple DBs in a single thread rather than starting up a new thread for each DB. * Also, fix packaging of jnilib file on OS_X platform. * Diff review: https://reviews.facebook.net/D20265 [Java] Add documentation on interdependency of dispose call of RocksObjects * Remove transferCppRawPointersOwnershipFrom function. - This function was setting opt.filter_ and thus filter_ to be null. This way there is no one holding reference for filter object and can thus be GC'd which is not the intention. Replaced it with storeOptionsInstace which stores options instance. Options class internally holds Filter instance. Thus when Options is GC'd, filter reference will be GC'd automatically. * Added documentation explaining interdependency of Filter, Options and DB. * Diff review: https://reviews.facebook.net/D20379 Test Plan: described in their diff reviews Reviewers: haobo sdong swapnilghike zzbennett rsumbaly yhchiang Reviewed by: yhchiang
35 lines
1.2 KiB
Java
35 lines
1.2 KiB
Java
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same 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.
|
|
*
|
|
* @param tickerType
|
|
* @param tickerCount
|
|
*/
|
|
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);
|
|
}
|