Blob support fixes - still does not work, but getting there

[wxWidgets.git] / src / common / timercmn.cpp

diff --git a/src/common/timercmn.cpp b/src/common/timercmn.cpp
index 000226700f874ea898d0e11cf711fb29c91169b2..e90b5fd4ade7c1fd0cdaa082f304d24588ba9c24 100644 (file)
--- a/src/common/timercmn.cpp
+++ b/src/common/timercmn.cpp
@@ -19,7 +19,7 @@
 // ============================================================================
 
 // ----------------------------------------------------------------------------
-// headers
+// wxWin headers
 // ----------------------------------------------------------------------------
 
 #ifdef __GNUG__
@@ -41,10 +41,25 @@
 #include "wx/timer.h"
 #include "wx/longlong.h"
 
+// ----------------------------------------------------------------------------
+// System headers
+// ----------------------------------------------------------------------------
+
 #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
@@ -61,7 +76,9 @@
 // wxWin macros
 // ----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxTimerEvent, wxEvent)
+#if wxUSE_GUI
+    IMPLEMENT_DYNAMIC_CLASS(wxTimerEvent, wxEvent)
+#endif // wxUSE_GUI
 
 // ----------------------------------------------------------------------------
 // macros
@@ -78,12 +95,6 @@ IMPLEMENT_DYNAMIC_CLASS(wxTimerEvent, wxEvent)
     #endif
 #endif // HAVE_GETTIMEOFDAY
 
-// ----------------------------------------------------------------------------
-// prototypes
-// ----------------------------------------------------------------------------
-
-wxLongLong wxGetLocalTimeMillis();
-
 // ============================================================================
 // implementation
 // ============================================================================
@@ -92,6 +103,8 @@ wxLongLong wxGetLocalTimeMillis();
 // wxTimerBase
 // ----------------------------------------------------------------------------
 
+#if wxUSE_GUI
+
 void wxTimerBase::Notify()
 {
     // the base class version generates an event if it has owner - which it
@@ -102,6 +115,28 @@ void wxTimerBase::Notify()
     (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
 // ----------------------------------------------------------------------------
@@ -109,13 +144,12 @@ void wxTimerBase::Notify()
 void wxStopWatch::Start(long t)
 {
     m_t0 = wxGetLocalTimeMillis() - t;
-
     m_pause = 0;
 }
 
 long wxStopWatch::GetElapsedTime() const
 {
-    return (wxGetLocalTimeMillis() - m_t0).GetLo();
+  return (wxGetLocalTimeMillis() - m_t0).GetLo();
 }
 
 long wxStopWatch::Time() const
@@ -219,11 +253,16 @@ long wxGetUTCTime()
 
             if (t0 != (time_t)-1 )
                 return (long)difftime(t1, t0) + (60 * 60 * 24 * 4);
-            wxLogSysError(_("Failed 2nd mktime"));
+            wxLogSysError(_("mktime() failed"));
+        }
+        else
+        {
+            wxLogSysError(_("gmtime() failed"));
         }
-        wxLogSysError(_("Failed gmtime"));
     }
-    wxLogSysError(_("Failed to get the UTC system time"));
+
+    wxLogError(_("Failed to get the UTC system time."));
+
     return -1;
 }
 
@@ -231,37 +270,67 @@ long wxGetUTCTime()
 // Get local time as milliseconds since 00:00:00, Jan 1st 1970
 wxLongLong wxGetLocalTimeMillis()
 {
-    // We use wxGetLocalTime() to get the seconds since
-    // 00:00:00 Jan 1st 1970 and then whatever is available
-    // to get millisecond resolution.
-    //
     wxLongLong val = 1000l;
-    val *= wxGetLocalTime();
 
-    // If we got here, do not fail even if we can't get
-    // millisecond resolution.
-    //
-#if defined(__WIN32__)
-    SYSTEMTIME st;
-    ::GetLocalTime(&st);
-    return (val + st.wMilliseconds);
-#elif defined(HAVE_GETTIMEOFDAY)
+    // If possible, use a functin which avoids conversions from
+    // broken-up time structures to milliseconds,
+
+#if defined(HAVE_GETTIMEOFDAY)
     struct timeval tp;
     if ( wxGetTimeOfDay(&tp, (struct timezone *)NULL) != -1 )
     {
+        val *= tp.tv_sec;
         return (val + (tp.tv_usec / 1000));
     }
-#elif defined(HAVE_FTIME)
-    struct timeb tp;
-    if ( ftime(&tp) == 0 )
+    else
     {
-        return (val + tp.millitm);
+        wxLogError(_("wxGetTimeOfDay failed."));
+        return 0;
     }
-#else
-#if !defined(__BORLANDC__) && !(defined(__VISUALC__) && defined(__WIN16__))
-    #warning "wxStopWatch will be up to second resolution!"
-#endif
+#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
+        #warning "wxStopWatch will be up to second resolution!"
+    #endif // compiler
 #endif
 
     return val;
+
+#endif // time functions
 }