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/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2018, Magnus Edenhill
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _RDHDR_HISTOGRAM_H_
#define _RDHDR_HISTOGRAM_H_
#include <inttypes.h>
typedef struct rd_hdr_histogram_s {
int64_t lowestTrackableValue;
int64_t highestTrackableValue;
int64_t unitMagnitude;
int64_t significantFigures;
int32_t subBucketHalfCountMagnitude;
int32_t subBucketHalfCount;
int64_t subBucketMask;
int32_t subBucketCount;
int32_t bucketCount;
int32_t countsLen;
int64_t totalCount;
int64_t *counts;
int64_t outOfRangeCount; /**< Number of rejected records due to
* value being out of range. */
int64_t lowestOutOfRange; /**< Lowest value that was out of range.
* Initialized to lowestTrackableValue */
int64_t highestOutOfRange; /**< Highest value that was out of range.
* Initialized to highestTrackableValue */
int32_t allocatedSize; /**< Allocated size of histogram, for
* sigfigs tuning. */
} rd_hdr_histogram_t;
#endif /* !_RDHDR_HISTOGRAM_H_ */
void rd_hdr_histogram_destroy(rd_hdr_histogram_t *hdr);
/**
* @brief Create a new Hdr_Histogram.
*
* @param significant_figures must be between 1..5
*
* @returns a newly allocated histogram, or NULL on error.
*
* @sa rd_hdr_histogram_destroy()
*/
rd_hdr_histogram_t *rd_hdr_histogram_new(int64_t minValue,
int64_t maxValue,
int significantFigures);
void rd_hdr_histogram_reset(rd_hdr_histogram_t *hdr);
int rd_hdr_histogram_record(rd_hdr_histogram_t *hdr, int64_t v);
double rd_hdr_histogram_stddev(rd_hdr_histogram_t *hdr);
double rd_hdr_histogram_mean(const rd_hdr_histogram_t *hdr);
int64_t rd_hdr_histogram_max(const rd_hdr_histogram_t *hdr);
int64_t rd_hdr_histogram_min(const rd_hdr_histogram_t *hdr);
int64_t rd_hdr_histogram_quantile(const rd_hdr_histogram_t *hdr, double q);
int unittest_rdhdrhistogram(void);
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