source/time/functions.cpp

   1 // ANNA - Anna is Not Nothingness Anymore                                                         //
   2 //                                                                                                //
   3 // (c) Copyright 2005-2015 Eduardo Ramos Testillano & Francisco Ruiz Rayo                         //
   4 //                                                                                                //
   5 // See project site at http://redmine.teslayout.com/projects/anna-suite                           //
   6 // See accompanying file LICENSE or copy at http://www.teslayout.com/projects/public/anna.LICENSE //
   7
   8
   9 // Local
  10 #include <anna/time/functions.hpp>
  11 #include <anna/time/internal/Timezone.hpp>
  12
  13 // Standard
  14 #include <stdlib.h> // getenv
  15 #include <time.h>
  16 #include <sys/time.h>
  17 #include <string>
  18
  19 #include <anna/core/functions.hpp>
  20
  21
  22 namespace anna {
  23 namespace time {
  24 Timezone SystemTimezone;
  25 unsigned long long int SecondsReference;
  26 }
  27 }
  28
  29
  30 void anna::time::functions::initialize() throw() {
  31   static bool cached = false;
  32   if(!cached) {
  33     SystemTimezone.set(getenv("TZ"));
  34     SecondsReference = 0;
  35     cached = true;
  36   }
  37 }
  38
  39 void anna::time::functions::setControlPoint(unsigned long long int secondsTimestamp) throw() {
  40   SecondsReference = secondsTimestamp ? secondsTimestamp : (::time(NULL));
  41 }
  42
  43 unsigned long long int anna::time::functions::getSecondsReference() throw() {
  44   return SecondsReference;
  45 }
  46
  47 const anna::time::Timezone & anna::time::functions::getSystemTimezone(void) throw() {
  48   return (SystemTimezone);
  49 }
  50
  51 bool anna::time::functions::initialized(void) throw() {
  52   return (SystemTimezone.isInitialized());
  53 }
  54
  55 unsigned long long int anna::time::functions::unixSeconds(void) throw() {
  56   return (::time(NULL));
  57 }
  58
  59 unsigned long long int anna::time::functions::unixMilliseconds() throw() {
  60   struct timeval tv;
  61   gettimeofday(&tv, NULL);
  62   return (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
  63 }
  64
  65 unsigned long long int anna::time::functions::lapsedMilliseconds() throw() {
  66   struct timeval tv;
  67   gettimeofday(&tv, NULL);
  68   return ((tv.tv_sec - SecondsReference) * 1000) + (tv.tv_usec / 1000);
  69 }
  70
  71 unsigned long long int anna::time::functions::unixMicroseconds(void) throw() {
  72   struct timeval tv;
  73   gettimeofday(&tv, NULL);
  74   unsigned long long int result(tv.tv_sec);
  75   result *= 1000000;
  76   return result += tv.tv_usec;
  77 }
  78
  79 std::string anna::time::functions::currentTimeAsString(void) throw() {
  80   struct timeval tv;
  81   gettimeofday(&tv, NULL);
  82   struct tm *tm;
  83   tm = localtime(&tv.tv_sec);
  84   return (anna::functions::asString("%02d:%02d:%02d %d usecs", tm->tm_hour, tm->tm_min, tm->tm_sec, tv.tv_usec));
  85 }
  86