src/lib/platform/timeutils.h

   1 #pragma once
   2 /*
   3  * This file is part of the libCEC(R) library.
   4  *
   5  * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited.  All rights reserved.
   6  * libCEC(R) is an original work, containing original code.
   7  *
   8  * libCEC(R) is a trademark of Pulse-Eight Limited.
   9  *
  10  * This program is dual-licensed; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  *
  24  *
  25  * Alternatively, you can license this library under a commercial license,
  26  * please contact Pulse-Eight Licensing for more information.
  27  *
  28  * For more information contact:
  29  * Pulse-Eight Licensing       <license@pulse-eight.com>
  30  *     http://www.pulse-eight.com/
  31  *     http://www.pulse-eight.net/
  32  */
  33
  34 #include <stdint.h>
  35 #if defined(__APPLE__)
  36 #include <mach/mach_time.h>
  37 #include <CoreVideo/CVHostTime.h>
  38 #elif defined(__WINDOWS__)
  39 #include <time.h>
  40 #else
  41 #include <sys/time.h>
  42 #endif
  43
  44 #include "os.h"
  45
  46 namespace PLATFORM
  47 {
  48   #if defined(__WINDOWS__)
  49   struct timezone
  50   {
  51     int tz_minuteswest;
  52     int tz_dsttime;
  53   };
  54
  55   #define usleep(t) Sleep((DWORD)(t)/1000)
  56
  57   inline int gettimeofday(struct timeval *pcur_time, struct timezone *tz)
  58   {
  59     if (pcur_time == NULL)
  60     {
  61       SetLastError(EFAULT);
  62       return -1;
  63     }
  64     struct _timeb current;
  65
  66     _ftime(&current);
  67
  68     pcur_time->tv_sec = (long) current.time;
  69     pcur_time->tv_usec = current.millitm * 1000L;
  70     if (tz)
  71     {
  72       tz->tz_minuteswest = current.timezone;    /* minutes west of Greenwich  */
  73       tz->tz_dsttime = current.dstflag;       /* type of dst correction  */
  74     }
  75     return 0;
  76   }
  77   #endif
  78
  79   inline int64_t GetTimeMs()
  80   {
  81   #if defined(__APPLE__)
  82     return (int64_t) (CVGetCurrentHostTime() * 1000 / CVGetHostClockFrequency());
  83   #elif defined(__WINDOWS__)
  84     time_t rawtime;
  85     time(&rawtime);
  86
  87     LARGE_INTEGER tickPerSecond;
  88     LARGE_INTEGER tick;
  89     if (QueryPerformanceFrequency(&tickPerSecond))
  90     {
  91       QueryPerformanceCounter(&tick);
  92       return (int64_t) (tick.QuadPart / 1000.);
  93     }
  94     return -1;
  95   #else
  96     timeval time;
  97     gettimeofday(&time, NULL);
  98     return (int64_t) (time.tv_sec * 1000 + time.tv_usec / 1000);
  99   #endif
 100   }
 101
 102   template <class T>
 103   inline T GetTimeSec()
 104   {
 105     return (T)GetTimeMs() / (T)1000.0;
 106   }
 107 };