org.rocksdb.Statistics Maven / Gradle / Ivy
// Copyright (c) 2011-present, 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;
/**
* Statistics to analyze the performance of a db. Pointer for statistics object
* is managed by Options class.
*/
public class Statistics {
private final long statsHandle_;
public Statistics(final long statsHandle) {
statsHandle_ = statsHandle;
}
public long getTickerCount(TickerType tickerType) {
assert(isInitialized());
return getTickerCount0(tickerType.getValue(), statsHandle_);
}
public HistogramData getHistogramData(final HistogramType histogramType) {
assert(isInitialized());
return getHistogramData0(
histogramType.getValue(), statsHandle_);
}
private boolean isInitialized() {
return (statsHandle_ != 0);
}
private native long getTickerCount0(int tickerType, long handle);
private native HistogramData getHistogramData0(int histogramType, long handle);
}
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