CPPUtil/UtilAbsTime.cpp

   1 //
   2 //  UtilAbsTime.cpp
   3 //  CPPUtil
   4 //
   5 //  Created by James McIlree on 4/14/13.
   6 //  Copyright (c) 2013 Apple. All rights reserved.
   7 //
   8
   9 #include "CPPUtil.h"
  10
  11 BEGIN_UTIL_NAMESPACE
  12
  13 const AbsTime AbsTime::BEGINNING_OF_TIME = AbsTime(0ULL);
  14 const AbsTime AbsTime::END_OF_TIME = AbsTime(UINT64_MAX);
  15
  16 AbsTime AbsTime::now() {
  17     return AbsTime(mach_absolute_time());
  18 }
  19
  20 NanoTime AbsTime::nano_time() const {
  21     mach_timebase_info_data_t timebase_info;
  22     mach_timebase_info(&timebase_info);
  23     return NanoTime(_time * timebase_info.numer  / timebase_info.denom);
  24 }
  25
  26 NanoTime AbsTime::nano_time(mach_timebase_info_data_t timebase_info) const {
  27     return NanoTime(_time * timebase_info.numer  / timebase_info.denom);
  28 }
  29
  30 END_UTIL_NAMESPACE