macTime.mm

Public Variables

U32

sgCurrentTime

Detailed Description

Public Variables

U32 sgCurrentTime

  1
  2//-----------------------------------------------------------------------------
  3// Copyright (c) 2012 GarageGames, LLC
  4//
  5// Permission is hereby granted, free of charge, to any person obtaining a copy
  6// of this software and associated documentation files (the "Software"), to
  7// deal in the Software without restriction, including without limitation the
  8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  9// sell copies of the Software, and to permit persons to whom the Software is
 10// furnished to do so, subject to the following conditions:
 11//
 12// The above copyright notice and this permission notice shall be included in
 13// all copies or substantial portions of the Software.
 14//
 15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 21// IN THE SOFTWARE.
 22//-----------------------------------------------------------------------------
 23
 24#import <CoreServices/CoreServices.h>
 25#import <mach/mach_time.h>
 26#import "platform/platformTimer.h"
 27#import <time.h>
 28#import <unistd.h>
 29
 30//--------------------------------------
 31
 32static U32 sgCurrentTime = 0;
 33
 34//--------------------------------------
 35void Platform::getLocalTime(LocalTime &lt)
 36{
 37   struct tm systime;
 38   time_t long_time;
 39
 40   /// Get time as long integer.
 41   time( &long_time );
 42   /// Convert to local time, thread safe.
 43   localtime_r( &long_time, &systime );
 44   
 45   /// Fill the return struct
 46   lt.sec      = systime.tm_sec;
 47   lt.min      = systime.tm_min;
 48   lt.hour     = systime.tm_hour;
 49   lt.month    = systime.tm_mon;
 50   lt.monthday = systime.tm_mday;
 51   lt.weekday  = systime.tm_wday;
 52   lt.year     = systime.tm_year;
 53   lt.yearday  = systime.tm_yday;
 54   lt.isdst    = systime.tm_isdst;
 55}   
 56
 57String Platform::localTimeToString( const LocalTime &lt )
 58{
 59   tm systime;
 60   
 61   systime.tm_sec    = lt.sec;
 62   systime.tm_min    = lt.min;
 63   systime.tm_hour   = lt.hour;
 64   systime.tm_mon    = lt.month;
 65   systime.tm_mday   = lt.monthday;
 66   systime.tm_wday   = lt.weekday;
 67   systime.tm_year   = lt.year;
 68   systime.tm_yday   = lt.yearday;
 69   systime.tm_isdst  = lt.isdst;
 70
 71   return asctime( &systime );
 72}
 73
 74/// Gets the time in seconds since the Epoch
 75U32 Platform::getTime()
 76{
 77   time_t epoch_time;
 78   time( &epoch_time );
 79   return epoch_time;
 80}   
 81
 82/// Gets the time in milliseconds since some epoch. In this case, system start time.
 83/// Storing milliseconds in a U32 overflows every 49.71 days
 84U32 Platform::getRealMilliseconds()
 85{
 86   const uint32_t oneMillion = 1000000;
 87   static mach_timebase_info_data_t s_timebase_info;
 88   
 89   if (s_timebase_info.denom == 0) {
 90      (void) mach_timebase_info(&s_timebase_info);
 91   }
 92   
 93   // mach_absolute_time() returns billionth of seconds,
 94   // so divide by one million to get milliseconds
 95   return (U32)((mach_absolute_time() * s_timebase_info.numer) / (oneMillion * s_timebase_info.denom));
 96}
 97
 98U32 Platform::getVirtualMilliseconds()
 99{
100   return sgCurrentTime;   
101}   
102
103void Platform::advanceTime(U32 delta)
104{
105   sgCurrentTime += delta;
106}   
107
108/// Asks the operating system to put the process to sleep for at least ms milliseconds
109void Platform::sleep(U32 ms)
110{
111    // note: this will overflow if you want to sleep for more than 49 days. just so ye know.
112    usleep( ms * 1000 );
113}
114
115//----------------------------------------------------------------------------------
116PlatformTimer* PlatformTimer::create()
117{
118   return new DefaultPlatformTimer;
119}
120
121void Platform::fileToLocalTime(const FileTime & ft, LocalTime * lt)
122{
123   if(!lt)
124      return;
125      
126   time_t long_time = ft;
127
128   struct tm systime;
129
130   /// Convert to local time, thread safe.
131   localtime_r( &long_time, &systime );
132   
133   /// Fill the return struct
134   lt->sec      = systime.tm_sec;
135   lt->min      = systime.tm_min;
136   lt->hour     = systime.tm_hour;
137   lt->month    = systime.tm_mon;
138   lt->monthday = systime.tm_mday;
139   lt->weekday  = systime.tm_wday;
140   lt->year     = systime.tm_year;
141   lt->yearday  = systime.tm_yday;
142   lt->isdst    = systime.tm_isdst;
143}
144
145