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