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  1. /// TDM-GCC 4.9.2
  2. ///----------------------------------------------------------------------------|
  3. /// Стенд для замера пииисек: мой против хулигана.
  4. ///     1 число - счетчик слов;
  5. ///     2 число - кол-во тактов на один проход;
  6. ///     Каждая новая строка есть прогресс по меньшему кол-ву тактов!
  7. ///
  8. ///     my - самый выдающийся финиш с 442 тактами! (100'000'000 проходов)
  9. ///     ...
  10. ///     10 минут спустя:
  11. ///     на миллиарде проходов(1'000'000'000)
  12. ///     CoderHuligan: 462 - looser...
  13. ///     my:           441 - WIN <<<---!!!
  14. ///     ...
  15. ///     CoderHuligan, не плачьте!
  16. ///----------------------------------------------------------------------------:
  17. #include <stdio.h>
  18. //#include <conio.h>
  19.  
  20. ///----------------------------------------------------------------------------|
  21. /// Мерилка тактов проца.
  22. ///----------------------------------------------------------------------------:
  23. typedef unsigned long long ull;
  24. inline ull rdtsc()
  25. {   unsigned int lo, hi;
  26.     asm volatile ( "rdtsc\n" : "=a" (lo), "=d" (hi) );
  27.     return ((ull)hi << 32) | lo;
  28. }
  29.  
  30. ///----------------------------------------------------------------------------|
  31. /// Для удобства.
  32. ///----------------------------------------------------------------------------:
  33. #define START_PERFOMANCE  ull t1 = rdtsc(); static ull ss_  = 0xffffffff;\
  34.     bool b = false
  35. #define END_PERFOMANCE ull v  = rdtsc(); v -= t1;\
  36.     if(ss_ > v){ b = true; ss_ = v;}
  37.  
  38. ///----------------------------------------------------------------------------|
  39. /// Хулиган.
  40. ///----------------------------------------------------------------------------:
  41. ull CoderHuligan(char* s)
  42. {   int nw = 0;
  43.     char *p=s;
  44.  
  45. START_PERFOMANCE;
  46.         --p;
  47.     OUT:
  48.         ++p;
  49.         if(!*p)
  50.             goto K;
  51.         if(*p == ' ' || *p == ',' || *p == '\n')
  52.             goto OUT;
  53.         nw++;
  54.             goto IN;
  55.     IN:
  56.         if(!*p)
  57.             goto K;
  58.         if(*p == ' ' || *p == ',' || *p == '\n')
  59.             goto OUT;
  60.         ++p;
  61.             goto IN;
  62.     K:
  63. END_PERFOMANCE;
  64.  
  65.     if(b)
  66.     {   printf ("CoderHuligan: %d ", nw);
  67.         printf ("%10u \n",  (unsigned)ss_);
  68.         b = false;
  69.     }
  70.  
  71.     return ss_;
  72. }
  73.  
  74. ///----------------------------------------------------------------------------|
  75. /// my.
  76. ///----------------------------------------------------------------------------:
  77. ull my(char* s)
  78. {   int  nw = 0;
  79.     char *p = s;
  80.  
  81. START_PERFOMANCE;
  82.     while (*p)
  83.     {   while ( *p == ' ' || *p == ',' || *p == '\n') p++;
  84.         if(*p++ == 0) break;
  85.         nw++;
  86.         while ( *p != ' ' && *p != ',' && *p != '\n' && *p) p++;
  87.     };
  88. END_PERFOMANCE;
  89.  
  90.     if(b)
  91.     {   printf ("my:           %d ",  nw);
  92.         printf ("%10u \n",  (unsigned)ss_);
  93.         b = false;
  94.     }
  95.  
  96.     return ss_;
  97. }
  98.  
  99. ///----------------------------------------------------------------------------|
  100. /// Наш кролик.
  101. ///----------------------------------------------------------------------------:
  102. char s[]="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed";
  103.  
  104. ///----------------------------------------------------------------------------|
  105. /// Start.
  106. ///----------------------------------------------------------------------------:
  107. int main()
  108. {
  109.     ull m,c;
  110.  
  111.     //-------------------------------|
  112.     // Quiet, testing!               |
  113.     //-------------------------------:
  114.     for(int i = 0; i < 10000000; ++i)
  115.     {   c = CoderHuligan(s);
  116.         m = my          (s);
  117.     }
  118.  
  119.     //-------------------------------|
  120.     // Banners is redy...            |
  121.     //-------------------------------:
  122.     const char* str[2] = {"WIN <<<--!!!", "looser..."};
  123.     int i1, i2;
  124.     (m > c) ? (i1 = 0, i2 = 1) : (i1 = 1, i2 = 0);
  125.  
  126.     //-------------------------------|
  127.     // Finish result.                |
  128.     //-------------------------------:
  129.     printf ("\nFinish the race-------------------:\n");
  130.     printf ("CoderHuligan: %u - ", (unsigned)c);
  131.     printf ("%s\n", str[i1]);
  132.     printf ("my:           %u - ", (unsigned)m);
  133.     printf ("%s\n", str[i2]);
  134.  
  135.     //-------------------------------|
  136.     // Show efficiency.              |
  137.     //-------------------------------:
  138.     double ef = 100.0/double(c) * double(m) - 100.0;
  139.     printf ("\nProfitable CoderHuligan: %2.2f%%\n\n",  ef);
  140.  
  141.     //_getch();
  142.     return 0;
  143. }
  144.  
Success #stdin #stdout 1.2s 15232KB
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stdin
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Standard input is empty
stdout
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CoderHuligan: 9        590 
my:           9        694 
CoderHuligan: 9        375 
my:           9        197 
CoderHuligan: 9        220 
my:           9        196 
my:           9        164 
CoderHuligan: 9        197 
my:           9        158 
CoderHuligan: 9        191 
my:           9        155 
my:           9        149 
my:           9        146 
CoderHuligan: 9        188 
CoderHuligan: 9        185 
my:           9        143 
my:           9        137 
CoderHuligan: 9        182 
CoderHuligan: 9        179 
CoderHuligan: 9        176 
my:           9        134 
CoderHuligan: 9        173 
my:           9        111 

Finish the race-------------------:
CoderHuligan: 173 - looser...
my:           111 - WIN <<<--!!!

Profitable CoderHuligan: -35.84%
https://ideone.com/ua8I2E
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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