projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| bf3afd5f EC |
1 | /* |
| 2 | * Copyright (C) 2016, Emilio G. Cota <[email protected]> | |
| 3 | * | |
| 4 | * License: GNU GPL, version 2 or later. | |
| 5 | * See the COPYING file in the top-level directory. | |
| 6 | */ | |
| 7 | #ifndef QEMU_QDIST_H | |
| 8 | #define QEMU_QDIST_H | |
| 9 | ||
| bf3afd5f EC |
10 | #include "qemu-common.h" |
| 11 | #include "qemu/bitops.h" | |
| 12 | ||
| 13 | /* | |
| 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}. | |
| 16 | * | |
| 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. | |
| 22 | */ | |
| 23 | struct qdist_entry { | |
| 24 | double x; | |
| 25 | unsigned long count; | |
| 26 | }; | |
| 27 | ||
| 28 | struct qdist { | |
| 29 | struct qdist_entry *entries; | |
| 30 | size_t n; | |
| 31 | size_t size; | |
| 32 | }; | |
| 33 | ||
| 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) | |
| 41 | ||
| 42 | void qdist_init(struct qdist *dist); | |
| 43 | void qdist_destroy(struct qdist *dist); | |
| 44 | ||
| 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); | |
| 52 | ||
| 53 | /* callers must free the returned string with g_free() */ | |
| 54 | char *qdist_pr_plain(const struct qdist *dist, size_t n_groups); | |
| 55 | ||
| 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); | |
| 58 | ||
| 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); | |
| 61 | ||
| 62 | #endif /* QEMU_QDIST_H */ |