benchtests/bench-wcrtomb.c

   1 /* Measure wcrtomb function.
   2    Copyright The GNU Toolchain Authors.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <array_length.h>
  20 #include <limits.h>
  21 #include <locale.h>
  22 #include <string.h>
  23 #include <wchar.h>
  24
  25 #include "bench-timing.h"
  26 #include "json-lib.h"
  27
  28 #define NITERS 100000
  29
  30 struct test_inputs
  31 {
  32   const char *locale;
  33   const wchar_t *input_chars;
  34 };
  35
  36 /* The inputs represent different types of characters, e.g. RTL, 1 byte, 2
  37    byte, 3 byte and 4 byte chars.  The exact number of inputs per locale
  38    doesn't really matter because we're not looking to compare performance
  39    between locales.  */
  40 struct test_inputs inputs[] =
  41 {
  42   /* RTL.  */
  43   {"ar_SA.UTF-8",
  44    L",-.،؟ـًُّ٠٢٣٤ءآأؤإئابةتثجحخدذرزسشصضطظعغفقكلمنهوىي"},
  45
  46   /* Various mixes of 1 and 2 byte chars.  */
  47   {"cs_CZ.UTF-8",
  48    L",.aAábcCčdDďeEéÉěĚfFghHiIíJlLmMnNňŇoóÓpPqQrřsSšŠTťuUúÚůŮvVWxyýz"},
  49
  50   {"el_GR.UTF-8",
  51    L",.αΑβγδΔεΕζηΗθΘιΙκΚλμΜνΝξοΟπΠρΡσΣςτυΥφΦχψω"},
  52
  53   {"en_GB.UTF-8",
  54    L",.aAāĀæÆǽǣǢbcCċdDðÐeEēĒfFgGġhHiIīĪlLmMnNoōpPqQrsSTuUūŪvVwxyȝzþÞƿǷ"},
  55
  56   {"fr_FR.UTF-8",
  57    L",.aAàâbcCçdDeEéèêëfFghHiIîïjlLmMnNoOôœpPqQrRsSTuUùûvVwxyz"},
  58
  59   {"he_IL.UTF-8",
  60    L"',.ִאבגדהוזחטיכךלמםנןסעפףצץקרשת"},
  61
  62   /* Devanagari, Japanese, 3-byte chars.  */
  63   {"hi_IN.UTF-8",
  64    L"(।ं०४५७अआइईउऎएओऔकखगघचछजञटडढणतथदधनपफ़बभमयरलवशषसहािीुूृेैोौ्"},
  65
  66   {"ja_JP.UTF-8",
  67    L".ー0123456789あアいイうウえエおオかカがきキぎくクぐけケげこコごさサざ"},
  68
  69   /* More mixtures of 1 and 2 byte chars.  */
  70   {"ru_RU.UTF-8",
  71    L",.аАбвВгдДеЕёЁжЖзЗийЙкКлЛмМнНоОпПрстТуУфФхХЦчшШщъыЫьэЭюЮя"},
  72
  73   {"sr_RS.UTF-8",
  74    L",.aAbcCćčdDđĐeEfgGhHiIlLmMnNoOpPqQrsSšŠTuUvVxyzZž"},
  75
  76   {"sv_SE.UTF-8",
  77    L",.aAåÅäÄæÆbBcCdDeEfFghHiIjlLmMnNoOöÖpPqQrsSTuUvVwxyz"},
  78
  79   /* Chinese, 3-byte chars  */
  80   {"zh_CN.UTF-8",
  81    L"一七三下不与世両並中串主乱予事二五亡京人今仕付以任企伎会伸住佐体作使"},
  82
  83   /* 4-byte chars, because smileys are the universal language and we want to
  84      ensure optimal performance with them 😊.  */
  85   {"en_US.UTF-8",
  86    L"😀😁😂😃😄😅😆😇😈😉😊😋😌😍😎😏😐😑😒😓😔😕😖😗😘😙😚😛😜😝😞😟😠😡"}
  87 };
  88
  89 char buf[MB_LEN_MAX];
  90 size_t ret;
  91
  92 int
  93 main (int argc, char **argv)
  94 {
  95   json_ctx_t json_ctx;
  96   json_init (&json_ctx, 0, stdout);
  97   json_document_begin (&json_ctx);
  98
  99   json_attr_string (&json_ctx, "timing_type", TIMING_TYPE);
 100   json_attr_object_begin (&json_ctx, "functions");
 101   json_attr_object_begin (&json_ctx, "wcrtomb");
 102
 103   for (size_t i = 0; i < array_length (inputs); i++)
 104     {
 105       json_attr_object_begin (&json_ctx, inputs[i].locale);
 106       setlocale (LC_ALL, inputs[i].locale);
 107
 108       timing_t min = 0x7fffffffffffffff, max = 0, total = 0;
 109       const wchar_t *inp = inputs[i].input_chars;
 110       const size_t len = wcslen (inp);
 111       mbstate_t s;
 112
 113       memset (&s, '\0', sizeof (s));
 114
 115       for (size_t n = 0; n < NITERS; n++)
 116         {
 117           timing_t start, end, elapsed;
 118
 119           TIMING_NOW (start);
 120           for (size_t j = 0; j < len; j++)
 121             ret = wcrtomb (buf, inp[j], &s);
 122           TIMING_NOW (end);
 123           TIMING_DIFF (elapsed, start, end);
 124           if (min > elapsed)
 125             min = elapsed;
 126           if (max < elapsed)
 127             max = elapsed;
 128           TIMING_ACCUM (total, elapsed);
 129         }
 130       json_attr_double (&json_ctx, "max", max);
 131       json_attr_double (&json_ctx, "min", min);
 132       json_attr_double (&json_ctx, "mean", total / NITERS);
 133       json_attr_object_end (&json_ctx);
 134     }
 135
 136   json_attr_object_end (&json_ctx);
 137   json_attr_object_end (&json_ctx);
 138   json_document_end (&json_ctx);
 139 }