-
-// ----------------------------------------------------------------------------
-// the functions to get the current time and timezone info
-// ----------------------------------------------------------------------------
-
-// Get local time as seconds since 00:00:00, Jan 1st 1970
-long wxGetLocalTime()
-{
- struct tm tm;
- time_t t0, t1;
-
- // This cannot be made static because mktime can overwrite it.
- //
- memset(&tm, 0, sizeof(tm));
- tm.tm_year = 70;
- tm.tm_mon = 0;
- tm.tm_mday = 5; // not Jan 1st 1970 due to mktime 'feature'
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1; // let mktime guess
-
- // Note that mktime assumes that the struct tm contains local time.
- //
- t1 = time(&t1); // now
- t0 = mktime(&tm); // origin
-
- // Return the difference in seconds.
- //
- if (( t0 != (time_t)-1 ) && ( t1 != (time_t)-1 ))
- return (long)difftime(t1, t0) + (60 * 60 * 24 * 4);
-
- wxLogSysError(_("Failed to get the local system time"));
- return -1;
-}
-
-// Get UTC time as seconds since 00:00:00, Jan 1st 1970
-long wxGetUTCTime()
-{
- struct tm tm;
- struct tm *ptm;
- time_t t0, t1;
-
- // This cannot be made static because mktime can overwrite it
- //
- memset(&tm, 0, sizeof(tm));
- tm.tm_year = 70;
- tm.tm_mon = 0;
- tm.tm_mday = 5; // not Jan 1st 1970 due to mktime 'feature'
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1; // let mktime guess
-
- // Note that mktime assumes that the struct tm contains local time.
- //
- t1 = time(&t1); // now
- t0 = mktime(&tm); // origin in localtime
-
- if (( t0 != (time_t)-1 ) && ( t1 != (time_t)-1 ))
- {
- // To get t0 as GMT we convert to a struct tm with gmtime,
- // and then back again.
- //
- ptm = gmtime(&t0);
-
- if (ptm)
- {
- memcpy(&tm, ptm, sizeof(tm));
- t0 = mktime(&tm);
-
- if (t0 != (time_t)-1 )
- return (long)difftime(t1, t0) + (60 * 60 * 24 * 4);
- wxLogSysError(_("mktime() failed"));
- }
- else
- {
- wxLogSysError(_("gmtime() failed"));
- }
- }
-
- wxLogError(_("Failed to get the UTC system time."));
-
- return -1;
-}
-
-#if wxUSE_LONGLONG
-
-// Get local time as milliseconds since 00:00:00, Jan 1st 1970
-wxLongLong wxGetLocalTimeMillis()
-{
- wxLongLong val = 1000l;
-
- // If possible, use a function which avoids conversions from
- // broken-up time structures to milliseconds
-
-#if defined(__WXMSW__) && defined(__MWERKS__)
- // This should probably be the way all WXMSW compilers should do it
- // Go direct to the OS for time
-
- SYSTEMTIME thenst = { 1970, 1, 4, 1, 0, 0, 0, 0 }; // 00:00:00 Jan 1st 1970
- FILETIME thenft;
- SystemTimeToFileTime( &thenst, &thenft );
- wxLongLong then( thenft.dwHighDateTime, thenft.dwLowDateTime ); // time in 100 nanoseconds
-
- SYSTEMTIME nowst;
- GetLocalTime( &nowst );
- FILETIME nowft;
- SystemTimeToFileTime( &nowst, &nowft );
- wxLongLong now( nowft.dwHighDateTime, nowft.dwLowDateTime ); // time in 100 nanoseconds
-
- return ( now - then ) / 10000.0; // time from 00:00:00 Jan 1st 1970 to now in milliseconds
-
-#elif defined(HAVE_GETTIMEOFDAY)
- struct timeval tp;
- if ( wxGetTimeOfDay(&tp, (struct timezone *)NULL) != -1 )
- {
- val *= tp.tv_sec;
- return (val + (tp.tv_usec / 1000));
- }
- else
- {
- wxLogError(_("wxGetTimeOfDay failed."));
- return 0;
- }
-#elif defined(HAVE_FTIME)
- struct timeb tp;
-
- // ftime() is void and not int in some mingw32 headers, so don't
- // test the return code (well, it shouldn't fail anyhow...)
- (void)ftime(&tp);
- val *= tp.time;
- return (val + tp.millitm);
-#elif defined(__WXMAC__)
-
- static UInt64 gMilliAtStart = 0;
-
- Nanoseconds upTime = AbsoluteToNanoseconds( UpTime() );
-
- if ( gMilliAtStart == 0 )
- {
- time_t start = time(NULL);
- gMilliAtStart = ((UInt64) start) * 1000000L;
- gMilliAtStart -= upTime.lo / 1000 ;
- gMilliAtStart -= ( ( (UInt64) upTime.hi ) << 32 ) / (1000 * 1000);
- }
-
- UInt64 millival = gMilliAtStart;
- millival += upTime.lo / (1000 * 1000);
- millival += ( ( (UInt64) upTime.hi ) << 32 ) / (1000 * 1000);
- val = millival;
-
- return val;
-#else // no gettimeofday() nor ftime()
- // We use wxGetLocalTime() to get the seconds since
- // 00:00:00 Jan 1st 1970 and then whatever is available
- // to get millisecond resolution.
- //
- // NOTE that this might lead to a problem if the clocks
- // use different sources, so this approach should be
- // avoided where possible.
-
- val *= wxGetLocalTime();
-
-// GRG: This will go soon as all WIN32 seem to have ftime
-#if defined (__WIN32__)
- // If your platform/compiler needs to use two different functions
- // to get ms resolution, please do NOT just shut off these warnings,
- // drop me a line instead at <guille@iies.es>
- #warning "Possible clock skew bug in wxGetLocalTimeMillis()!"
-
- SYSTEMTIME st;
- ::GetLocalTime(&st);
- val += st.wMilliseconds;
-#else // !Win32
- // If your platform/compiler does not support ms resolution please
- // do NOT just shut off these warnings, drop me a line instead at
- // <guille@iies.es>
-
- #if defined(__VISUALC__) || defined (__WATCOMC__)
- #pragma message("wxStopWatch will be up to second resolution!")
- #elif defined(__BORLANDC__)
- #pragma message "wxStopWatch will be up to second resolution!"
- #else
- #warning "wxStopWatch will be up to second resolution!"
- #endif // compiler
-#endif
-
- return val;
-
-#endif // time functions
-}
-
-#endif // wxUSE_LONGLONG
-
-
projects / wxWidgets.git / blobdiff