/////////////////////////////////////////////////////////////////////////////
// Name: common/timercmn.cpp
// Purpose: Common timer implementation
-// Author: Julian Smart
-// Modified by: Vadim Zeitlin on 12.11.99 to get rid of all ifdefs
+// Author:
+// Original version by Julian Smart
+// Vadim Zeitlin got rid of all ifdefs (11.12.99)
+// Sylvain Bougnoux added wxStopWatch class
+// Guillermo Rodriguez <guille@iies.es> rewrote from scratch (Dic/99)
+// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// (c) 1999 Guillermo Rodriguez <guille@iies.es>
+// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// ============================================================================
// ----------------------------------------------------------------------------
-// headers
+// wxWin headers
// ----------------------------------------------------------------------------
#ifdef __GNUG__
#endif
#include "wx/timer.h"
+#include "wx/longlong.h"
-// I'm told VMS is POSIX, so should have localtime()
-#if defined(__WXMSW__) || defined(__VMS__)
- // configure might have found it already for us
- #ifndef HAVE_LOCALTIME
- #define HAVE_LOCALTIME
+// ----------------------------------------------------------------------------
+// System headers
+// ----------------------------------------------------------------------------
- // TODO add test for broken compilers here if needed
- #define WX_GMTOFF_IN_TM
- #endif
+#if defined(__WIN32__)
+ #include <windows.h>
+#endif
+
+#if defined(__WIN32__) && !defined(HAVE_FTIME)
+ #define HAVE_FTIME
+#endif
+
+#if defined(__VISAGECPP__) && !defined(HAVE_FTIME)
+ #define HAVE_FTIME
+# if __IBMCPP__ >= 400
+ # define ftime(x) _ftime(x)
+# endif
+#endif
+
+#include <time.h>
+#ifndef __WXMAC__
+ #include <sys/types.h> // for time_t
#endif
#if defined(HAVE_GETTIMEOFDAY)
#include <sys/time.h>
#include <unistd.h>
-#elif defined(HAVE_LOCALTIME)
- #include <time.h>
- #ifndef __WXMAC__
- #include <sys/types.h> // for time_t
- #endif
#elif defined(HAVE_FTIME)
#include <sys/timeb.h>
-#else
- #error "no function to find the current time on this system"
#endif
+// ----------------------------------------------------------------------------
+// wxWin macros
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI
+ IMPLEMENT_DYNAMIC_CLASS(wxTimerEvent, wxEvent)
+#endif // wxUSE_GUI
+
// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------
// implementation
// ============================================================================
+// ----------------------------------------------------------------------------
+// wxTimerBase
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI
+
+void wxTimerBase::Notify()
+{
+ // the base class version generates an event if it has owner - which it
+ // should because otherwise nobody can process timer events
+ wxCHECK_RET( m_owner, _T("wxTimer::Notify() should be overridden.") );
+
+ wxTimerEvent event(m_idTimer, m_milli);
+ (void)m_owner->ProcessEvent(event);
+}
+
+bool wxTimerBase::Start(int milliseconds, bool oneShot)
+{
+ if ( IsRunning() )
+ {
+ // not stopping the already running timer might work for some
+ // platforms (no problems under MSW) but leads to mysterious crashes
+ // on the others (GTK), so to be on the safe side do it here
+ Stop();
+ }
+
+ if ( milliseconds != -1 )
+ {
+ m_milli = milliseconds;
+ }
+
+ m_oneShot = oneShot;
+
+ return TRUE;
+}
+
+#endif // wxUSE_GUI
+
// ----------------------------------------------------------------------------
// wxStopWatch
// ----------------------------------------------------------------------------
void wxStopWatch::Start(long t)
{
- m_t0 = wxGetCurrentMTime() - t;
-
+ m_t0 = wxGetLocalTimeMillis() - t;
m_pause = 0;
}
+long wxStopWatch::GetElapsedTime() const
+{
+ return (wxGetLocalTimeMillis() - m_t0).GetLo();
+}
+
long wxStopWatch::Time() const
{
- return m_pause ? m_pause : GetElapsedTime();
+ return (m_pause ? m_pause : GetElapsedTime());
}
// ----------------------------------------------------------------------------
// old timer functions superceded by wxStopWatch
// ----------------------------------------------------------------------------
-static long wxStartTime = 0;
+static wxLongLong wxStartTime = 0l;
// starts the global timer
void wxStartTimer()
{
- wxStartTime = wxGetCurrentMTime();
+ wxStartTime = wxGetLocalTimeMillis();
}
// Returns elapsed time in milliseconds
long wxGetElapsedTime(bool resetTimer)
{
- long oldTime = wxStartTime;
- long newTime = wxGetCurrentMTime();
+ wxLongLong oldTime = wxStartTime;
+ wxLongLong newTime = wxGetLocalTimeMillis();
if ( resetTimer )
wxStartTime = newTime;
- return newTime - oldTime;
+ return (newTime - oldTime).GetLo();
}
-// Get number of seconds since 00:00:00 GMT, Jan 1st 1970.
-long wxGetCurrentTime()
-{
- return wxGetCurrentMTime() / 1000;
-}
-
// ----------------------------------------------------------------------------
// the functions to get the current time and timezone info
// ----------------------------------------------------------------------------
-// return GMT time in millisecond
-long wxGetCurrentMTime()
+// 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()
{
-#if defined(HAVE_LOCALTIME)
- time_t t0 = time(&t0);
- if ( t0 != (time_t)-1 )
+ 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 ))
{
- struct tm *tp = localtime(&t0);
+ // To get t0 as GMT we convert to a struct tm with gmtime,
+ // and then back again.
+ //
+ ptm = gmtime(&t0);
- if ( tp )
+ if (ptm)
{
- return 1000*(60*(60*tp->tm_hour+tp->tm_min)+tp->tm_sec);
+ 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"));
}
}
-#elif defined(HAVE_GETTIMEOFDAY)
- struct timeval tp;
- if ( wxGetTimeOfDay(&tp, (struct timezone *)NULL) != -1 )
- {
- return (1000*tp.tv_sec + tp.tv_usec / 1000);
- }
-#elif defined(HAVE_FTIME)
- struct timeb tp;
- if ( ftime(&tp) == 0 )
- {
- return (1000*tp.time + tp.millitm);
- }
-#else
- #error "no function to find the current time on this system"
-#endif
- wxLogSysError(_("Failed to get the system time"));
+ wxLogError(_("Failed to get the UTC system time."));
return -1;
}
-bool wxGetLocalTime(long *timeZone, int *dstObserved)
+
+// Get local time as milliseconds since 00:00:00, Jan 1st 1970
+wxLongLong wxGetLocalTimeMillis()
{
-#if defined(HAVE_LOCALTIME) && defined(WX_GMTOFF_IN_TM)
- time_t t0 = time(&t0);
- if ( t0 != (time_t)-1 )
- {
- struct tm *tm = localtime(&t0);
+ wxLongLong val = 1000l;
- if ( tm )
- {
- *timeZone = tm->tm_gmtoff;
- *dstObserved = tm->tm_isdst;
+ // If possible, use a functin which avoids conversions from
+ // broken-up time structures to milliseconds,
- return TRUE;
- }
- }
-#elif defined(HAVE_GETTIMEOFDAY) && !defined(WX_GETTIMEOFDAY_NO_TZ)
+#if defined(HAVE_GETTIMEOFDAY)
struct timeval tp;
- struct timezone tz;
- if ( gettimeofday(&tp, &tz) != -1 )
+ if ( wxGetTimeOfDay(&tp, (struct timezone *)NULL) != -1 )
{
- *timeZone = 60*tz.tz_minuteswest;
- *dstObserved = tz.tz_dsttime;
-
- return TRUE;
+ val *= tp.tv_sec;
+ return (val + (tp.tv_usec / 1000));
}
-#elif defined(HAVE_FTIME)
- struct timeb tb;
- if ( ftime(&tb) == 0 )
+ else
{
- *timeZone = 60*tb.timezone;
- *dstObserved = tb.dstflag;
+ wxLogError(_("wxGetTimeOfDay failed."));
+ return 0;
}
-#else
- // special hacks for known compilers - I wonder if this is still needed,
- // i.e. if there are any of them which don't support localtime()? (VZ)
-
- #if defined(__BORLANDC__)
- *timeZone = _timezone;
- *dstObserved = _daylight;
- #elif defined(__SALFORDC__)
- *timeZone = _timezone;
- *dstObserved = daylight;
- #elif defined(__VISAGECPP__)
- *timeZone = _timezone;
- *dstObserved = daylight;
+#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);
+#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__)
+ #pragma message("wxStopWatch will be up to second resolution!")
+ #elif defined(__BORLANDC__)
+ #pragma message "wxStopWatch will be up to second resolution!"
#else
- wxFAIL_MSG(_T("wxGetLocalTime() not implemented"));
+ #warning "wxStopWatch will be up to second resolution!"
#endif // compiler
#endif
- return FALSE;
+ return val;
+
+#endif // time functions
}
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