vcl/unx/inc/salunx.h

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  30
  31 #ifndef _SALUNX_H
  32 #define _SALUNX_H
  33
  34 // -=-= #includes =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  35 #if defined SCO || defined LINUX || defined HPUX || defined FREEBSD || defined NETBSD
  36 #include <sys/time.h>
  37 #elif defined AIX
  38 #include <time.h>
  39 #include <sys/time.h>
  40 #include <strings.h>
  41 #elif defined IRIX
  42 #ifdef __cplusplus
  43 #include <ctime>
  44 #endif
  45 #include <sys/time.h>
  46 #include <unistd.h>
  47 #endif
  48 #include <svunx.h>
  49 #include <salstd.hxx>
  50
  51 // -=-= #defines -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  52 #define capacityof(a)   (sizeof(a)/sizeof(*a))
  53
  54 // -=-= inlines =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  55 inline long Divide( long nDividend, long nDivisor )
  56 { return (nDividend + nDivisor/2) / nDivisor; }
  57
  58 inline long DPI( long pixel, long mm )
  59 { return Divide( pixel*254, mm*10 ); }
  60
  61 // -=-= timeval =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  62 inline int operator >= ( const timeval &t1, const timeval &t2 )
  63 {
  64     if( t1.tv_sec == t2.tv_sec )
  65         return t1.tv_usec >= t2.tv_usec;
  66     return t1.tv_sec > t2.tv_sec;
  67 }
  68
  69 inline int operator > ( const timeval &t1, const timeval &t2 )
  70 {
  71     if( t1.tv_sec == t2.tv_sec )
  72         return t1.tv_usec > t2.tv_usec;
  73     return t1.tv_sec > t2.tv_sec;
  74 }
  75
  76 inline int operator == ( const timeval &t1, const timeval &t2 )
  77 {
  78     if( t1.tv_sec == t2.tv_sec )
  79         return t1.tv_usec == t2.tv_usec;
  80     return FALSE;
  81 }
  82
  83 inline timeval &operator -= ( timeval &t1, const timeval &t2 )
  84 {
  85     if( t1.tv_usec < t2.tv_usec )
  86     {
  87         t1.tv_sec--;
  88         t1.tv_usec += 1000000;
  89     }
  90     t1.tv_sec  -= t2.tv_sec;
  91     t1.tv_usec -= t2.tv_usec;
  92     return t1;
  93 }
  94
  95 inline timeval &operator += ( timeval &t1, const timeval &t2 )
  96 {
  97     t1.tv_sec  += t2.tv_sec;
  98     t1.tv_usec += t2.tv_usec;
  99     if( t1.tv_usec > 1000000 )
 100     {
 101         t1.tv_sec++;
 102         t1.tv_usec -= 1000000;
 103     }
 104     return t1;
 105 }
 106
 107 inline timeval &operator += ( timeval &t1, ULONG t2 )
 108 {
 109     t1.tv_sec  += t2 / 1000;
 110     t1.tv_usec += t2 ? (t2 % 1000) * 1000 : 500;
 111     if( t1.tv_usec > 1000000 )
 112     {
 113         t1.tv_sec++;
 114         t1.tv_usec -= 1000000;
 115     }
 116     return t1;
 117 }
 118
 119 inline timeval operator + ( const timeval &t1, const timeval &t2 )
 120 {
 121     timeval t0 = t1;
 122     return t0 += t2;
 123 }
 124
 125 inline timeval operator + ( const timeval &t1, ULONG t2 )
 126 {
 127     timeval t0 = t1;
 128     return t0 += t2;
 129 }
 130
 131 inline timeval operator - ( const timeval &t1, const timeval &t2 )
 132 {
 133     timeval t0 = t1;
 134     return t0 -= t2;
 135 }
 136 #endif
 137