mirror of https://github.com/nodejs/node.git
44 lines
965 B
C
44 lines
965 B
C
#ifndef STATS_H
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#define STATS_H
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#include <stdbool.h>
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#include "tinymt64.h"
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#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
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#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
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typedef struct {
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uint32_t connect;
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uint32_t read;
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uint32_t write;
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uint32_t status;
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uint32_t timeout;
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} errors;
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typedef struct {
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uint64_t samples;
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uint64_t index;
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uint64_t limit;
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uint64_t min;
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uint64_t max;
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uint64_t data[];
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} stats;
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stats *stats_alloc(uint64_t);
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void stats_free(stats *);
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void stats_reset(stats *);
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void stats_rewind(stats *);
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void stats_record(stats *, uint64_t);
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long double stats_summarize(stats *);
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long double stats_mean(stats *);
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long double stats_stdev(stats *stats, long double);
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long double stats_within_stdev(stats *, long double, long double, uint64_t);
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uint64_t stats_percentile(stats *, long double);
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void stats_sample(stats *, tinymt64_t *, uint64_t, stats *);
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uint64_t rand64(tinymt64_t *, uint64_t);
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#endif /* STATS_H */
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