Source/MacCompatibility.cpp

   1 #if !PLATFORM_MACOSX
   2
   3 /**> HEADER FILES <**/
   4 #include "MacCompatibility.h"
   5 #include <windows.h>
   6 #include <errno.h>
   7 #include <time.h>
   8 #include <stdio.h>
   9
  10 #if PLATFORM_UNIX
  11 typedef long long __int64;
  12 typedef __int64 LARGE_INTEGER;
  13 static int QueryPerformanceFrequency(LARGE_INTEGER *liptr)
  14 {
  15     assert(sizeof (__int64) == 8);
  16     assert(sizeof (LARGE_INTEGER) == 8);
  17     *liptr = 1000;
  18     return(1);
  19 }
  20
  21 static void QueryPerformanceCounter(LARGE_INTEGER *liptr)
  22 {
  23     struct timeval tv;
  24     gettimeofday(&tv, NULL);
  25     *liptr = ( (((LARGE_INTEGER) tv.tv_sec) * 1000) +
  26                (((LARGE_INTEGER) tv.tv_usec) / 1000) );
  27     return(1);
  28 }
  29 #endif
  30
  31 class AppTime
  32 {
  33 public:
  34         AppTime()
  35         {
  36                 counterRate = 1;
  37                 baseCounter = 0;
  38                 QueryPerformanceFrequency( (LARGE_INTEGER*)&counterRate);
  39                 QueryPerformanceCounter( (LARGE_INTEGER*)&baseCounter);
  40         }
  41         __int64 counterRate;            // LARGE_INTEGER type has no math functions so use int64
  42         __int64 baseCounter;
  43 };
  44 static AppTime g_appTime;
  45
  46
  47 void CopyCStringToPascal( const char* src, unsigned char dst[256])
  48 {
  49         int len = strlen( src);
  50         dst[ 0] = len;
  51         memcpy( dst + 1, src, len);
  52 }
  53
  54
  55 void CopyPascalStringToC( const unsigned char* src, char* dst)
  56 {
  57         int len = src[ 0];
  58         memcpy( dst, src + 1, len);
  59         dst[ len] = 0;
  60 }
  61
  62
  63 AbsoluteTime UpTime()
  64 {
  65         __int64 counter;
  66         QueryPerformanceCounter( (LARGE_INTEGER*)&counter);
  67
  68         counter -= g_appTime.baseCounter;
  69
  70         AbsoluteTime time;
  71         time.lo = (unsigned long)counter;
  72         time.hi = (unsigned long)(counter >> 32);
  73         return time;
  74 }
  75
  76
  77 Duration AbsoluteDeltaToDuration( AbsoluteTime& a, AbsoluteTime& b)
  78 {
  79         __int64 value = a.hi;
  80         value <<= 32;
  81         value |= a.lo;
  82         __int64 value2 = b.hi;
  83         value2 <<= 32;
  84         value2 |= b.lo;
  85         value -= value2;
  86
  87         if (value <= 0)
  88                 return durationImmediate;
  89
  90         __int64 frac = value % g_appTime.counterRate;
  91         value /= g_appTime.counterRate;
  92
  93         Duration time;
  94
  95         if (value == 0)
  96         {
  97                 frac *= -1000000;
  98                 frac /= g_appTime.counterRate;
  99                 time = (Duration)frac;
 100         }
 101         else
 102         {
 103                 frac *= 1000;
 104                 frac /= g_appTime.counterRate;
 105                 value *= 1000;
 106                 value += frac;
 107                 time = (Duration)value;
 108         }
 109
 110         return time;
 111 }
 112
 113
 114 static char g_filename[ 256];
 115 char* ConvertFileName( const char* orgfilename)
 116 {
 117         // translate filename into proper path name
 118         if (orgfilename[ 0] == ':')
 119                 orgfilename++;
 120         strcpy( g_filename, orgfilename);
 121
 122         for (int n = 0; g_filename[ n]; n++)
 123         {
 124                 if (g_filename[ n] == ':')
 125                         g_filename[ n] = '/';
 126         }
 127
 128         return g_filename;
 129 }
 130
 131 #endif
 132
 133