psychlops/platform/win32/psychlops_io_clock_Win32.cpp

   1 /*
   2  *  psychlops_io_clock_Win32.cpp
   3  *  Psychlops Standard Library (MacOSX)
   4  *
   5  *  Last Modified 2005/12/21 by Kenchi HOSOKAWA
   6  *  (C) 2005 Kenchi HOSOKAWA, Kazushi MARUYA, Takao SATO
   7  */
   8
   9 #include <stdlib.h>
  10 #include <Math.h>
  11 #include <time.h>
  12 #include <iostream>
  13
  14 #include <Windows.h>
  15
  16 #include "../../core/ApplicationInterfaces/psychlops_code.h"
  17
  18 #include "psychlops_io_clock_Win32.h"
  19 #include "../../core/devices/psychlops_io_clock.h"
  20
  21
  22 namespace Psychlops {
  23
  24         void Clock::initialize() {
  25                 if(QueryPerformanceFrequency((_LARGE_INTEGER *)&clocks_per_a_milisecond_)==0) {
  26                         throw Exception(typeid(Clock), "HARDWARE NOT SUPPORTED", "This computer does not support high-resolution performance counter.");
  27                 }\r
  28                 clocks_per_a_milisecond_.QuadPart /= 1000;
  29         }
  30
  31         Clock::Clock() {
  32                 update();
  33         }
  34         Clock::Clock(CLOCK_UNIT native_clock) {
  35                 clock_ = native_clock;
  36         }
  37         Clock::~Clock() {}
  38         void Clock::update() {
  39                 QueryPerformanceCounter((_LARGE_INTEGER *)&clock_);
  40         }
  41 //      Clock Clock::operator -() {\r
  42 //              return Clock(-clock_);\r
  43 //      }\r
  44         Clock Clock::operator +(Clock &rhs) {
  45                 CLOCK_UNIT tmp;
  46                 tmp.QuadPart = clock_.QuadPart + rhs.clock_.QuadPart;
  47                 return Clock(tmp);
  48         }
  49         Clock Clock::operator -(Clock &rhs) {
  50                 CLOCK_UNIT tmp;
  51                 tmp.QuadPart = clock_.QuadPart - rhs.clock_.QuadPart;
  52                 return Clock(tmp);
  53         }
  54         Clock & Clock::operator +=(Clock &rhs) {
  55                 (*this) = (*this) + rhs;
  56                 return *this;
  57         }
  58         Clock & Clock::operator -=(Clock &rhs) {
  59                 (*this) = (*this) - rhs;
  60                 return *this;
  61         }
  62         bool Clock::operator ==(Clock &rhs) {
  63                 return (clock_.QuadPart==rhs.clock_.QuadPart);
  64         }
  65
  66         bool Clock::operator !=(Clock &rhs) {
  67                 return (clock_.QuadPart!=rhs.clock_.QuadPart);
  68         }
  69         bool Clock::operator >(Clock &rhs) {
  70                 return (clock_.QuadPart>rhs.clock_.QuadPart);
  71         }
  72         bool Clock::operator <(Clock &rhs) {
  73                 return (clock_.QuadPart<rhs.clock_.QuadPart);
  74         }
  75         bool Clock::operator >=(Clock &rhs) {
  76                 return (clock_.QuadPart>=rhs.clock_.QuadPart);
  77         }
  78         bool Clock::operator <=(Clock &rhs) {
  79                 return (clock_.QuadPart<=rhs.clock_.QuadPart);
  80         }
  81         double Clock::at_msec() {
  82                 return (double)clock_.QuadPart/(double)clocks_per_a_milisecond_.QuadPart;
  83         }
  84
  85         CLOCK_UNIT Clock::clocks_per_a_milisecond_;
  86
  87
  88         long Gettime_ms() {
  89                 Clock tmp;
  90                 return tmp.at_msec();
  91         }
  92
  93
  94 }       /*      <- namespace Psycholops         */