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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_SUPPORT_HISTOGRAM_H
#define GRPC_SUPPORT_HISTOGRAM_H
#include <grpc/support/port_platform.h>
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct grpc_histogram grpc_histogram;
grpc_histogram* grpc_histogram_create(double resolution,
double max_bucket_start);
void grpc_histogram_destroy(grpc_histogram* h);
void grpc_histogram_add(grpc_histogram* h, double x);
/** The following merges the second histogram into the first. It only works
if they have the same buckets and resolution. Returns 0 on failure, 1
on success */
int grpc_histogram_merge(grpc_histogram* dst, const grpc_histogram* src);
double grpc_histogram_percentile(grpc_histogram* histogram, double percentile);
double grpc_histogram_mean(grpc_histogram* histogram);
double grpc_histogram_stddev(grpc_histogram* histogram);
double grpc_histogram_variance(grpc_histogram* histogram);
double grpc_histogram_maximum(grpc_histogram* histogram);
double grpc_histogram_minimum(grpc_histogram* histogram);
double grpc_histogram_count(grpc_histogram* histogram);
double grpc_histogram_sum(grpc_histogram* histogram);
double grpc_histogram_sum_of_squares(grpc_histogram* histogram);
const uint32_t* grpc_histogram_get_contents(grpc_histogram* histogram,
size_t* count);
void grpc_histogram_merge_contents(grpc_histogram* histogram,
const uint32_t* data, size_t data_count,
double min_seen, double max_seen, double sum,
double sum_of_squares, double count);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_SUPPORT_HISTOGRAM_H */
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