Re: [Cppcms-users] booster::locale::date_time to timestamp conversion issues / basis for booster::locale::date_time

[Artyom B. <art...@ya...>]

Is CppCMS compiled with ICU on both machines?Is it same CppCMS version? Also can you print all intermediate calculations as well? (i.e. dtCurrentTime,dtSomeMonthAgo and dtStart)In general second difference should be trivial i.e. mostly calculate difference between internal timestamp.
Artyom
 
      From: Alexander Mack <a....@ev...>
 To: cpp...@li... 
 Sent: Thursday, November 26, 2015 3:30 PM
 Subject: [Cppcms-users] booster::locale::date_time to timestamp conversion issues / basis for booster::locale::date_time
   
Hello,

I'm trying to convert a date_time object into a simple timestamp e.g.:

// init environment...
std::locale::global(booster::locale::generator().generate(""));
cppcms::service srv(argc, argv);

// ....

// get some time some month ago..
booster::locale::date_time dtCurrentTime;
booster::locale::date_time dtSomeMonthAgo = dtCurrentTime - 
(booster::locale::period::month());

// get date_time for 1970-01-01 00:00:00
booster::locale::date_time dtStart(0);

// get timestamp
int iDifference = dtStart.difference(dtCurrent, 
booster::locale::period::second());

That code works fine on Machine A.. But when I'm running the program on 
Machine B I get weird results..
On Machine A the timestamp for Mon, 26 Oct 2015 12:37:12 GMT is 
1445863032. (correct)
On Machine B the timestamp for Mon, 26 Oct 2015 12:37:12 GMT is 
536870912. (wrong)

The times on the machines are equal too.. timedatectl:

Machine A:
Local time: Do 2015-11-26 14:25:12 CET
  Universal time: Do 2015-11-26 13:25:12 UTC
        Timezone: Europe/Berlin (CET, +0100)
      NTP enabled: yes
NTP synchronized: yes
  RTC in local TZ: no
      DST active: no
  Last DST change: DST ended at
                  So 2015-10-25 02:59:59 CEST
                  So 2015-10-25 02:00:00 CET
  Next DST change: DST begins (the clock jumps one hour forward) at
                  So 2016-03-27 01:59:59 CET
                  So 2016-03-27 03:00:00 CEST

Machine B:
Local time: Do 2015-11-26 14:25:38 CET
  Universal time: Do 2015-11-26 13:25:38 UTC
        RTC time: Do 2015-11-26 13:25:38
        Timezone: Europe/Berlin (CET, +0100)
      NTP enabled: yes
NTP synchronized: no
  RTC in local TZ: no
      DST active: no
  Last DST change: DST ended at
                  So 2015-10-25 02:59:59 CEST
                  So 2015-10-25 02:00:00 CET
  Next DST change: DST begins (the clock jumps one hour forward) at
                  So 2016-03-27 01:59:59 CET
                  So 2016-03-27 03:00:00 CEST


Maybe someone had the same issue and knows what the problem is?

I would appreciate any tip :-)

Thank you very much,

Alex



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