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annotate third_party/wrk/src/units.c @ 206:240337164a80

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[Seobeo] SSL should be used for large file as well lol.
author MrJuneJune <me@mrjunejune.com>
date Sun, 15 Feb 2026 11:41:53 -0800
parents 94705b5986b3
children
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178
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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1 // Copyright (C) 2012 - Will Glozer. All rights reserved.
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2
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3 #include <stdlib.h>
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4 #include <stdio.h>
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5 #include <strings.h>
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6 #include <inttypes.h>
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7
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8 #include "units.h"
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9 #include "aprintf.h"
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10
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11 typedef struct {
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12 int scale;
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13 char *base;
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14 char *units[];
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15 } units;
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16
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17 units time_units_us = {
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18 .scale = 1000,
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19 .base = "us",
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20 .units = { "ms", "s", NULL }
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21 };
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22
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23 units time_units_s = {
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24 .scale = 60,
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25 .base = "s",
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26 .units = { "m", "h", NULL }
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27 };
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28
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29 units binary_units = {
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30 .scale = 1024,
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31 .base = "",
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32 .units = { "K", "M", "G", "T", "P", NULL }
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33 };
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34
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35 units metric_units = {
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36 .scale = 1000,
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37 .base = "",
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38 .units = { "k", "M", "G", "T", "P", NULL }
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39 };
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40
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41 static char *format_units(long double n, units *m, int p) {
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42 long double amt = n, scale;
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43 char *unit = m->base;
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44 char *msg = NULL;
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45
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46 scale = m->scale * 0.85;
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47
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48 for (int i = 0; m->units[i+1] && amt >= scale; i++) {
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49 amt /= m->scale;
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50 unit = m->units[i];
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51 }
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52
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53 aprintf(&msg, "%.*Lf%s", p, amt, unit);
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54
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55 return msg;
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56 }
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57
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58 static int scan_units(char *s, uint64_t *n, units *m) {
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59 uint64_t base, scale = 1;
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60 char unit[3] = { 0, 0, 0 };
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61 int i, c;
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62
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63 if ((c = sscanf(s, "%"SCNu64"%2s", &base, unit)) < 1) return -1;
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64
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65 if (c == 2 && strncasecmp(unit, m->base, 3)) {
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66 for (i = 0; m->units[i] != NULL; i++) {
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67 scale *= m->scale;
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68 if (!strncasecmp(unit, m->units[i], 3)) break;
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69 }
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70 if (m->units[i] == NULL) return -1;
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71 }
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72
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73 *n = base * scale;
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74 return 0;
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75 }
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76
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77 char *format_binary(long double n) {
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78 return format_units(n, &binary_units, 2);
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79 }
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80
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81 char *format_metric(long double n) {
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82 return format_units(n, &metric_units, 2);
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83 }
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84
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85 char *format_time_us(long double n) {
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86 units *units = &time_units_us;
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87 if (n >= 1000000.0) {
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88 n /= 1000000.0;
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89 units = &time_units_s;
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90 }
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91 return format_units(n, units, 2);
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92 }
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93
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94 char *format_time_s(long double n) {
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95 return format_units(n, &time_units_s, 0);
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96 }
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97
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98 int scan_metric(char *s, uint64_t *n) {
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99 return scan_units(s, n, &metric_units);
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100 }
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101
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102 int scan_time(char *s, uint64_t *n) {
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103 return scan_units(s, n, &time_units_s);
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104 }