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 licence
   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 namespace
  44 {
  45
  46 const wxString& GetTestAsciiString()
  47 {
  48     static wxString testString;
  49     if ( testString.empty() )
  50     {
  51         long num = Bench::GetNumericParameter();
  52         if ( !num )
  53             num = 1;
  54
  55         for ( long n = 0; n < num; n++ )
  56             testString += wxString::FromAscii(asciistr);
  57     }
  58
  59     return testString;
  60 }
  61
  62 } // anonymous namespace
  63
  64 // this is just a baseline
  65 BENCHMARK_FUNC(Strlen)
  66 {
  67     if ( strlen(utf8str) != WXSIZEOF(utf8str) - 1 )
  68         return false;
  69
  70     if ( strlen(asciistr) != WXSIZEOF(asciistr) - 1 )
  71         return false;
  72
  73     return true;
  74 }
  75
  76 // ----------------------------------------------------------------------------
  77 // FromUTF8() benchmarks
  78 // ----------------------------------------------------------------------------
  79
  80 BENCHMARK_FUNC(FromUTF8)
  81 {
  82     wxString s = wxString::FromUTF8(utf8str);
  83     if ( s.empty() )
  84         return false;
  85
  86     s = wxString::FromUTF8(asciistr);
  87     if ( s.empty() )
  88         return false;
  89
  90     return true;
  91 }
  92
  93 BENCHMARK_FUNC(FromUTF8WithNpos)
  94 {
  95     wxString s = wxString::FromUTF8(utf8str, wxString::npos);
  96     if ( s.empty() )
  97         return false;
  98
  99     s = wxString::FromUTF8(asciistr, wxString::npos);
 100     if ( s.empty() )
 101         return false;
 102
 103     return true;
 104 }
 105
 106 BENCHMARK_FUNC(FromUTF8WithLen)
 107 {
 108     wxString s = wxString::FromUTF8(utf8str, WXSIZEOF(utf8str));
 109     if ( s.empty() )
 110         return false;
 111
 112     s = wxString::FromUTF8(asciistr, WXSIZEOF(asciistr));
 113     if ( s.empty() )
 114         return false;
 115
 116     return true;
 117 }
 118
 119 // ----------------------------------------------------------------------------
 120 // FromUTF8Unchecked() benchmarks
 121 // ----------------------------------------------------------------------------
 122
 123 BENCHMARK_FUNC(FromUTF8Unchecked)
 124 {
 125     wxString s = wxString::FromUTF8Unchecked(utf8str);
 126     if ( s.empty() )
 127         return false;
 128
 129     s = wxString::FromUTF8Unchecked(asciistr);
 130     if ( s.empty() )
 131         return false;
 132
 133     return true;
 134 }
 135
 136 BENCHMARK_FUNC(FromUTF8UncheckedWithNpos)
 137 {
 138     wxString s = wxString::FromUTF8Unchecked(utf8str, wxString::npos);
 139     if ( s.empty() )
 140         return false;
 141
 142     s = wxString::FromUTF8Unchecked(asciistr, wxString::npos);
 143     if ( s.empty() )
 144         return false;
 145
 146     return true;
 147 }
 148
 149 BENCHMARK_FUNC(FromUTF8UncheckedWithLen)
 150 {
 151     wxString s = wxString::FromUTF8Unchecked(utf8str, WXSIZEOF(utf8str));
 152     if ( s.empty() )
 153         return false;
 154
 155     s = wxString::FromUTF8Unchecked(asciistr, WXSIZEOF(asciistr));
 156     if ( s.empty() )
 157         return false;
 158
 159     return true;
 160 }
 161
 162 // ----------------------------------------------------------------------------
 163 // FromAscii() benchmarks
 164 // ----------------------------------------------------------------------------
 165
 166 BENCHMARK_FUNC(FromAscii)
 167 {
 168     wxString s = wxString::FromAscii(asciistr);
 169     if ( s.empty() )
 170         return false;
 171
 172     return true;
 173 }
 174
 175 BENCHMARK_FUNC(FromAsciiWithNpos)
 176 {
 177     wxString s = wxString::FromAscii(asciistr);
 178     if ( s.empty() )
 179         return false;
 180
 181     return true;
 182 }
 183
 184 BENCHMARK_FUNC(FromAsciiWithLen)
 185 {
 186     wxString s = wxString::FromAscii(asciistr, WXSIZEOF(asciistr));
 187     if ( s.empty() )
 188         return false;
 189
 190     return true;
 191 }
 192
 193 // ----------------------------------------------------------------------------
 194 // simple string iteration
 195 // ----------------------------------------------------------------------------
 196
 197 // baseline
 198 BENCHMARK_FUNC(ForCString)
 199 {
 200     for ( size_t n = 0; n < WXSIZEOF(asciistr); n++ )
 201     {
 202         if ( asciistr[n] == '~' )
 203             return false;
 204     }
 205
 206     return true;
 207 }
 208
 209 BENCHMARK_FUNC(ForStringIndex)
 210 {
 211     const wxString& s = GetTestAsciiString();
 212     const size_t len = s.length();
 213     for ( size_t n = 0; n < len; n++ )
 214     {
 215         if ( s[n] == '~' )
 216             return false;
 217     }
 218
 219     return true;
 220 }
 221
 222 BENCHMARK_FUNC(ForStringIter)
 223 {
 224     const wxString& s = GetTestAsciiString();
 225     const wxString::const_iterator end = s.end();
 226     for ( wxString::const_iterator i = s.begin(); i != end; ++i )
 227     {
 228         if ( *i == '~' )
 229             return false;
 230     }
 231
 232     return true;
 233 }
 234
 235 BENCHMARK_FUNC(ForStringRIter)
 236 {
 237     const wxString& s = GetTestAsciiString();
 238     const wxString::const_reverse_iterator rend = s.rend();
 239     for ( wxString::const_reverse_iterator i = s.rbegin(); i != rend; ++i )
 240     {
 241         if ( *i == '~' )
 242             return false;
 243     }
 244
 245     return true;
 246 }
 247
 248 // ----------------------------------------------------------------------------
 249 // wxString::Replace()
 250 // ----------------------------------------------------------------------------
 251
 252 const size_t ASCIISTR_LEN = strlen(asciistr);
 253
 254 BENCHMARK_FUNC(ReplaceLoop)
 255 {
 256     wxString str('x', ASCIISTR_LEN);
 257     for ( size_t n = 0; n < ASCIISTR_LEN; n++ )
 258     {
 259         if ( str[n] == 'a' )
 260             str[n] = 'z';
 261     }
 262
 263     return str.length() != 0;
 264 }
 265
 266 BENCHMARK_FUNC(ReplaceNone)
 267 {
 268     wxString str('x', ASCIISTR_LEN);
 269     return str.Replace("a", "z") == 0;
 270 }
 271
 272 BENCHMARK_FUNC(ReplaceSome)
 273 {
 274     wxString str(asciistr);
 275     return str.Replace("7", "8") != 0;
 276 }
 277
 278 BENCHMARK_FUNC(ReplaceAll)
 279 {
 280     wxString str('x', ASCIISTR_LEN);
 281     return str.Replace("x", "y") != 0;
 282 }
 283
 284 BENCHMARK_FUNC(ReplaceLonger)
 285 {
 286     wxString str('x', ASCIISTR_LEN);
 287     return str.Replace("x", "yy") != 0;
 288 }
 289
 290 BENCHMARK_FUNC(ReplaceShorter)
 291 {
 292     wxString str('x', ASCIISTR_LEN);
 293     return str.Replace("xx", "y") != 0;
 294 }
 295
 296 // ----------------------------------------------------------------------------
 297 // string case conversion
 298 // ----------------------------------------------------------------------------
 299
 300 BENCHMARK_FUNC(Lower)
 301 {
 302     return GetTestAsciiString().Lower().length() > 0;
 303 }
 304
 305 BENCHMARK_FUNC(Upper)
 306 {
 307     return GetTestAsciiString().Upper().length() > 0;
 308 }
 309
 310 // ----------------------------------------------------------------------------
 311 // string comparison
 312 // ----------------------------------------------------------------------------
 313
 314 BENCHMARK_FUNC(StrcmpA)
 315 {
 316     const wxString& s = GetTestAsciiString();
 317
 318     return wxCRT_StrcmpA(s, s) == 0;
 319 }
 320
 321 BENCHMARK_FUNC(StrcmpW)
 322 {
 323     const wxString& s = GetTestAsciiString();
 324
 325     return wxCRT_StrcmpW(s, s) == 0;
 326 }
 327
 328 BENCHMARK_FUNC(StricmpA)
 329 {
 330     const wxString& s = GetTestAsciiString();
 331
 332     return wxCRT_StricmpA(s, s) == 0;
 333 }
 334
 335 BENCHMARK_FUNC(StricmpW)
 336 {
 337     const wxString& s = GetTestAsciiString();
 338
 339     return wxCRT_StricmpW(s, s) == 0;
 340 }
 341
 342 BENCHMARK_FUNC(StringCmp)
 343 {
 344     const wxString& s = GetTestAsciiString();
 345
 346     return s.Cmp(s) == 0;
 347 }
 348
 349 BENCHMARK_FUNC(StringCmpNoCase)
 350 {
 351     const wxString& s = GetTestAsciiString();
 352
 353     return s.CmpNoCase(s) == 0;
 354 }
 355
 356 // Also benchmark various native functions under MSW. Surprisingly/annoyingly
 357 // they sometimes have vastly better performance than alternatives, especially
 358 // for case-sensitive comparison (see #10375).
 359 #ifdef __WXMSW__
 360
 361 #include "wx/msw/wrapwin.h"
 362
 363 BENCHMARK_FUNC(MSWlstrcmp)
 364 {
 365     const wxString& s = GetTestAsciiString();
 366
 367     return lstrcmp(s.t_str(), s.t_str()) == 0;
 368 }
 369
 370 BENCHMARK_FUNC(MSWlstrcmpi)
 371 {
 372     const wxString& s = GetTestAsciiString();
 373
 374     return lstrcmpi(s.t_str(), s.t_str()) == 0;
 375 }
 376
 377 BENCHMARK_FUNC(MSWCompareString)
 378 {
 379     const wxString& s = GetTestAsciiString();
 380
 381     return ::CompareString
 382              (
 383                 LOCALE_USER_DEFAULT,
 384                 0,
 385                 s.t_str(), s.length(),
 386                 s.t_str(), s.length()
 387              ) == CSTR_EQUAL;
 388 }
 389
 390 BENCHMARK_FUNC(MSWCompareStringIgnoreCase)
 391 {
 392     const wxString& s = GetTestAsciiString();
 393
 394     return ::CompareString
 395              (
 396                 LOCALE_USER_DEFAULT,
 397                 NORM_IGNORECASE,
 398                 s.t_str(), s.length(),
 399                 s.t_str(), s.length()
 400              ) == CSTR_EQUAL;
 401 }
 402
 403 #endif // __WXMSW__
 404
 405 // ----------------------------------------------------------------------------
 406 // string buffers: wx[W]CharBuffer
 407 // ----------------------------------------------------------------------------
 408
 409 BENCHMARK_FUNC(CharBuffer)
 410 {
 411     wxString str(asciistr);
 412
 413     // NB: wxStrlen() is here to simulate some use of the returned buffer.
 414     //     Both mb_str() and wc_str() are used so that this code does something
 415     //     nontrivial in any build.
 416     return wxStrlen(str.mb_str()) == ASCIISTR_LEN &&
 417            wxStrlen(str.wc_str()) == ASCIISTR_LEN;
 418 }
 419
 420
 421 // ----------------------------------------------------------------------------
 422 // wxString::operator[] - parse large HTML page
 423 // ----------------------------------------------------------------------------
 424
 425 class DummyParser : public wx28HtmlParser
 426 {
 427 public:
 428     virtual wxObject* GetProduct() { return NULL; }
 429     virtual void AddText(const wxChar*) {}
 430 };
 431
 432
 433 BENCHMARK_FUNC(ParseHTML)
 434 {
 435     // static so that construction time is not counted
 436     static DummyParser parser;
 437     static wxString html;
 438     if ( html.empty() )
 439     {
 440         wxString html1;
 441         wxFFile("htmltest.html").ReadAll(&html1, wxConvUTF8);
 442
 443         // this is going to make for some invalid HTML, of course, but it
 444         // doesn't really matter
 445         long num = Bench::GetNumericParameter();
 446         if ( !num )
 447             num = 1;
 448
 449         for ( long n = 0; n < num; n++ )
 450             html += html1;
 451     }
 452
 453     parser.Parse(html);
 454
 455     return true;
 456 }