histogram.h

Go to the documentation of this file.

/*
 * Copyright (c) 2024 Mustafa Abdullah Kus, Sparse Technology
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_PROMETHEUS_HISTOGRAM_H_
#define ZEPHYR_INCLUDE_PROMETHEUS_HISTOGRAM_H_
 
#include <zephyr/sys/iterable_sections.h>
#include <zephyr/net/prometheus/metric.h>
 
#include <stddef.h>
 
struct prometheus_histogram_bucket {
        double upper_bound;
        unsigned long count;
};
 
struct prometheus_histogram {
        struct prometheus_metric *base;
        struct prometheus_histogram_bucket *buckets;
        size_t num_buckets;
        double sum;
        unsigned long count;
};
 
#define PROMETHEUS_HISTOGRAM_DEFINE(_name, _detail)                                                \
        static STRUCT_SECTION_ITERABLE(prometheus_histogram, _name) = {.base = (void *)(_detail),  \
                                                                       .buckets = NULL,            \
                                                                       .num_buckets = 0,           \
                                                                       .sum = 0,                   \
                                                                       .count = 0}
 
int prometheus_histogram_observe(struct prometheus_histogram *histogram, double value);
 
#endif /* ZEPHYR_INCLUDE_PROMETHEUS_HISTOGRAM_H_ */