61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2016, Emilio G. Cota <cota@braap.org>
|
|
*
|
|
* License: GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
#ifndef QEMU_QDIST_H
|
|
#define QEMU_QDIST_H
|
|
|
|
#include "qemu/bitops.h"
|
|
|
|
/*
|
|
* Samples with the same 'x value' end up in the same qdist_entry,
|
|
* e.g. inc(0.1) and inc(0.1) end up as {x=0.1, count=2}.
|
|
*
|
|
* Binning happens only at print time, so that we retain the flexibility to
|
|
* choose the binning. This might not be ideal for workloads that do not care
|
|
* much about precision and insert many samples all with different x values;
|
|
* in that case, pre-binning (e.g. entering both 0.115 and 0.097 as 0.1)
|
|
* should be considered.
|
|
*/
|
|
struct qdist_entry {
|
|
double x;
|
|
unsigned long count;
|
|
};
|
|
|
|
struct qdist {
|
|
struct qdist_entry *entries;
|
|
size_t n;
|
|
size_t size;
|
|
};
|
|
|
|
#define QDIST_PR_BORDER BIT(0)
|
|
#define QDIST_PR_LABELS BIT(1)
|
|
/* the remaining options only work if PR_LABELS is set */
|
|
#define QDIST_PR_NODECIMAL BIT(2)
|
|
#define QDIST_PR_PERCENT BIT(3)
|
|
#define QDIST_PR_100X BIT(4)
|
|
#define QDIST_PR_NOBINRANGE BIT(5)
|
|
|
|
void qdist_init(struct qdist *dist);
|
|
void qdist_destroy(struct qdist *dist);
|
|
|
|
void qdist_add(struct qdist *dist, double x, long count);
|
|
void qdist_inc(struct qdist *dist, double x);
|
|
double qdist_xmin(const struct qdist *dist);
|
|
double qdist_xmax(const struct qdist *dist);
|
|
double qdist_avg(const struct qdist *dist);
|
|
unsigned long qdist_sample_count(const struct qdist *dist);
|
|
size_t qdist_unique_entries(const struct qdist *dist);
|
|
|
|
/* callers must free the returned string with g_free() */
|
|
char *qdist_pr_plain(const struct qdist *dist, size_t n_groups);
|
|
|
|
/* callers must free the returned string with g_free() */
|
|
char *qdist_pr(const struct qdist *dist, size_t n_groups, uint32_t opt);
|
|
|
|
/* Only qdist code and test code should ever call this function */
|
|
void qdist_bin__internal(struct qdist *to, const struct qdist *from, size_t n);
|
|
|
|
#endif /* QEMU_QDIST_H */
|