tests/benchmarks/strings.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/benchmarks/strings.cpp
   3 // Purpose:     String-related benchmarks
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-07-19
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows license
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/string.h"
  12 #include "wx/ffile.h"
  13
  14 #include "bench.h"
  15 #include "htmlparser/htmlpars.h"
  16
  17 static const char asciistr[] =
  18     "This is just the first line of a very long 7 bit ASCII string"
  19     "This is just the second line of a very long 7 bit ASCII string"
  20     "This is just the third line of a very long 7 bit ASCII string"
  21     "This is just the fourth line of a very long 7 bit ASCII string"
  22     "This is just the fifth line of a very long 7 bit ASCII string"
  23     "This is just the sixth line of a very long 7 bit ASCII string"
  24     "This is just the seventh line of a very long 7 bit ASCII string"
  25     "This is just the eighth line of a very long 7 bit ASCII string"
  26     "This is just the ninth line of a very long 7 bit ASCII string"
  27     "This is just the tenth line of a very long 7 bit ASCII string"
  28     ;
  29
  30 static const char utf8str[] =
  31     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 0"
  32     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 1"
  33     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 2"
  34     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 3"
  35     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 4"
  36     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 5"
  37     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 6"
  38     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 7"
  39     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 8"
  40     "\xD0\xA6\xD0\xB5\xD0\xBB\xD0\xBE\xD0\xB5 \xD1\x87\xD0\xB8\xD1\x81\xD0\xBB\xD0\xBE 9"
  41     ;
  42
  43 // this is just a baseline
  44 BENCHMARK_FUNC(Strlen)
  45 {
  46     if ( strlen(utf8str) != WXSIZEOF(utf8str) - 1 )
  47         return false;
  48
  49     if ( strlen(asciistr) != WXSIZEOF(asciistr) - 1 )
  50         return false;
  51
  52     return true;
  53 }
  54
  55 // ----------------------------------------------------------------------------
  56 // FromUTF8() benchmarks
  57 // ----------------------------------------------------------------------------
  58
  59 BENCHMARK_FUNC(FromUTF8)
  60 {
  61     wxString s = wxString::FromUTF8(utf8str);
  62     if ( s.empty() )
  63         return false;
  64
  65     s = wxString::FromUTF8(asciistr);
  66     if ( s.empty() )
  67         return false;
  68
  69     return true;
  70 }
  71
  72 BENCHMARK_FUNC(FromUTF8WithNpos)
  73 {
  74     wxString s = wxString::FromUTF8(utf8str, wxString::npos);
  75     if ( s.empty() )
  76         return false;
  77
  78     s = wxString::FromUTF8(asciistr, wxString::npos);
  79     if ( s.empty() )
  80         return false;
  81
  82     return true;
  83 }
  84
  85 BENCHMARK_FUNC(FromUTF8WithLen)
  86 {
  87     wxString s = wxString::FromUTF8(utf8str, WXSIZEOF(utf8str));
  88     if ( s.empty() )
  89         return false;
  90
  91     s = wxString::FromUTF8(asciistr, WXSIZEOF(asciistr));
  92     if ( s.empty() )
  93         return false;
  94
  95     return true;
  96 }
  97
  98 // ----------------------------------------------------------------------------
  99 // FromUTF8Unchecked() benchmarks
 100 // ----------------------------------------------------------------------------
 101
 102 BENCHMARK_FUNC(FromUTF8Unchecked)
 103 {
 104     wxString s = wxString::FromUTF8Unchecked(utf8str);
 105     if ( s.empty() )
 106         return false;
 107
 108     s = wxString::FromUTF8Unchecked(asciistr);
 109     if ( s.empty() )
 110         return false;
 111
 112     return true;
 113 }
 114
 115 BENCHMARK_FUNC(FromUTF8UncheckedWithNpos)
 116 {
 117     wxString s = wxString::FromUTF8Unchecked(utf8str, wxString::npos);
 118     if ( s.empty() )
 119         return false;
 120
 121     s = wxString::FromUTF8Unchecked(asciistr, wxString::npos);
 122     if ( s.empty() )
 123         return false;
 124
 125     return true;
 126 }
 127
 128 BENCHMARK_FUNC(FromUTF8UncheckedWithLen)
 129 {
 130     wxString s = wxString::FromUTF8Unchecked(utf8str, WXSIZEOF(utf8str));
 131     if ( s.empty() )
 132         return false;
 133
 134     s = wxString::FromUTF8Unchecked(asciistr, WXSIZEOF(asciistr));
 135     if ( s.empty() )
 136         return false;
 137
 138     return true;
 139 }
 140
 141 // ----------------------------------------------------------------------------
 142 // FromAscii() benchmarks
 143 // ----------------------------------------------------------------------------
 144
 145 BENCHMARK_FUNC(FromAscii)
 146 {
 147     wxString s = wxString::FromAscii(asciistr);
 148     if ( s.empty() )
 149         return false;
 150
 151     return true;
 152 }
 153
 154 BENCHMARK_FUNC(FromAsciiWithNpos)
 155 {
 156     wxString s = wxString::FromAscii(asciistr);
 157     if ( s.empty() )
 158         return false;
 159
 160     return true;
 161 }
 162
 163 BENCHMARK_FUNC(FromAsciiWithLen)
 164 {
 165     wxString s = wxString::FromAscii(asciistr, WXSIZEOF(asciistr));
 166     if ( s.empty() )
 167         return false;
 168
 169     return true;
 170 }
 171
 172 // ----------------------------------------------------------------------------
 173 // simple string iteration
 174 // ----------------------------------------------------------------------------
 175
 176 // baseline
 177 BENCHMARK_FUNC(ForCString)
 178 {
 179     for ( size_t n = 0; n < WXSIZEOF(asciistr); n++ )
 180     {
 181         if ( asciistr[n] == '~' )
 182             return false;
 183     }
 184
 185     return true;
 186 }
 187
 188 BENCHMARK_FUNC(ForStringIndex)
 189 {
 190     const wxString s = wxString::FromAscii(asciistr);
 191     const size_t len = s.length();
 192     for ( size_t n = 0; n < len; n++ )
 193     {
 194         if ( s[n] == '~' )
 195             return false;
 196     }
 197
 198     return true;
 199 }
 200
 201 BENCHMARK_FUNC(ForStringIter)
 202 {
 203     const wxString s = wxString::FromAscii(asciistr);
 204     const wxString::const_iterator end = s.end();
 205     for ( wxString::const_iterator i = s.begin(); i != end; ++i )
 206     {
 207         if ( *i == '~' )
 208             return false;
 209     }
 210
 211     return true;
 212 }
 213
 214 BENCHMARK_FUNC(ForStringRIter)
 215 {
 216     const wxString s = wxString::FromAscii(asciistr);
 217     const wxString::const_reverse_iterator rend = s.rend();
 218     for ( wxString::const_reverse_iterator i = s.rbegin(); i != rend; ++i )
 219     {
 220         if ( *i == '~' )
 221             return false;
 222     }
 223
 224     return true;
 225 }
 226
 227 // ----------------------------------------------------------------------------
 228 // wxString::Replace()
 229 // ----------------------------------------------------------------------------
 230
 231 const size_t ASCIISTR_LEN = strlen(asciistr);
 232
 233 BENCHMARK_FUNC(ReplaceLoop)
 234 {
 235     wxString str('x', ASCIISTR_LEN);
 236     for ( size_t n = 0; n < ASCIISTR_LEN; n++ )
 237     {
 238         if ( str[n] == 'a' )
 239             str[n] = 'z';
 240     }
 241
 242     return str.length() != 0;
 243 }
 244
 245 BENCHMARK_FUNC(ReplaceNone)
 246 {
 247     wxString str('x', ASCIISTR_LEN);
 248     return str.Replace("a", "z") == 0;
 249 }
 250
 251 BENCHMARK_FUNC(ReplaceSome)
 252 {
 253     wxString str(asciistr);
 254     return str.Replace("7", "8") != 0;
 255 }
 256
 257 BENCHMARK_FUNC(ReplaceAll)
 258 {
 259     wxString str('x', ASCIISTR_LEN);
 260     return str.Replace("x", "y") != 0;
 261 }
 262
 263
 264 // ----------------------------------------------------------------------------
 265 // string buffers: wx[W]CharBuffer
 266 // ----------------------------------------------------------------------------
 267
 268 BENCHMARK_FUNC(CharBuffer)
 269 {
 270     wxString str(asciistr);
 271
 272     // NB: wxStrlen() is here to simulate some use of the returned buffer.
 273     //     Both mb_str() and wc_str() are used so that this code does something
 274     //     nontrivial in any build.
 275     return wxStrlen(str.mb_str()) == ASCIISTR_LEN &&
 276            wxStrlen(str.wc_str()) == ASCIISTR_LEN;
 277 }
 278
 279
 280 // ----------------------------------------------------------------------------
 281 // wxString::operator[] - parse large HTML page
 282 // ----------------------------------------------------------------------------
 283
 284 class DummyParser : public wx28HtmlParser
 285 {
 286 public:
 287     virtual wxObject* GetProduct() { return NULL; }
 288     virtual void AddText(const wxChar*) {}
 289 };
 290
 291
 292 BENCHMARK_FUNC(ParseHTML)
 293 {
 294     // static so that construction time is not counted
 295     static DummyParser parser;
 296     static wxString html;
 297     if ( html.empty() )
 298     {
 299         wxFFile("htmltest.html").ReadAll(&html, wxConvUTF8);
 300     }
 301
 302     parser.Parse(html);
 303
 304     return true;
 305 }