39 lines
1.1 KiB
Java
39 lines
1.1 KiB
Java
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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package org.rocksdb;
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/**
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* Statistics to analyze the performance of a db. Pointer for statistics object
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* is managed by Options class.
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*/
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public class Statistics {
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private final long statsHandle_;
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public Statistics(long statsHandle) {
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statsHandle_ = statsHandle;
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}
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public long getTickerCount(TickerType tickerType) {
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assert(isInitialized());
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return getTickerCount0(tickerType.getValue(), statsHandle_);
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}
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public HistogramData geHistogramData(HistogramType histogramType) {
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assert(isInitialized());
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HistogramData hist = geHistogramData0(
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histogramType.getValue(), statsHandle_);
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return hist;
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}
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private boolean isInitialized() {
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return (statsHandle_ != 0);
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}
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private native long getTickerCount0(int tickerType, long handle);
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private native HistogramData geHistogramData0(int histogramType, long handle);
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}
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