src/common/stopwatch.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/stopwatch.cpp
   3 // Purpose:     wxStopWatch and other non-GUI stuff from wx/timer.h
   4 // Author:
   5 //    Original version by Julian Smart
   6 //    Vadim Zeitlin got rid of all ifdefs (11.12.99)
   7 //    Sylvain Bougnoux added wxStopWatch class
   8 //    Guillermo Rodriguez <guille@iies.es> rewrote from scratch (Dic/99)
   9 // Modified by:
  10 // Created:     20.06.2003 (extracted from common/timercmn.cpp)
  11 // RCS-ID:      $Id$
  12 // Copyright:   (c) 1998-2003 wxWidgets Team
  13 // License:     wxWindows license
  14 ///////////////////////////////////////////////////////////////////////////////
  15
  16 // ============================================================================
  17 // declarations
  18 // ============================================================================
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // for compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #include "wx/stopwatch.h"
  32
  33 #ifndef WX_PRECOMP
  34     #ifdef __WXMSW__
  35         #include "wx/msw/wrapwin.h"
  36     #endif
  37     #include "wx/intl.h"
  38     #include "wx/log.h"
  39 #endif //WX_PRECOMP
  40
  41 // ----------------------------------------------------------------------------
  42 // System headers
  43 // ----------------------------------------------------------------------------
  44
  45 #if defined(__WIN32__) && !defined(HAVE_FTIME) && !defined(__MWERKS__) && !defined(__WXWINCE__)
  46     #define HAVE_FTIME
  47 #endif
  48
  49 #if defined(__VISAGECPP__) && !defined(HAVE_FTIME)
  50     #define HAVE_FTIME
  51 #  if __IBMCPP__ >= 400
  52     #  define ftime(x) _ftime(x)
  53 #  endif
  54 #endif
  55
  56 #if defined(__MWERKS__) && defined(__WXMSW__)
  57 #   undef HAVE_FTIME
  58 #   undef HAVE_GETTIMEOFDAY
  59 #endif
  60
  61 #ifndef __WXPALMOS5__
  62 #ifndef __WXWINCE__
  63 #include <time.h>
  64 #else
  65 #include "wx/msw/private.h"
  66 #include "wx/msw/wince/time.h"
  67 #endif
  68 #endif // __WXPALMOS5__
  69
  70
  71 #if !defined(__WXMAC__) && !defined(__WXWINCE__)
  72     #include <sys/types.h>      // for time_t
  73 #endif
  74
  75 #if defined(HAVE_GETTIMEOFDAY)
  76     #include <sys/time.h>
  77     #include <unistd.h>
  78 #elif defined(HAVE_FTIME)
  79     #include <sys/timeb.h>
  80 #endif
  81
  82 #ifdef __WXPALMOS__
  83     #include <DateTime.h>
  84     #include <TimeMgr.h>
  85     #include <SystemMgr.h>
  86 #endif
  87
  88 // ============================================================================
  89 // implementation
  90 // ============================================================================
  91
  92 // ----------------------------------------------------------------------------
  93 // wxStopWatch
  94 // ----------------------------------------------------------------------------
  95
  96 #if wxUSE_STOPWATCH
  97
  98 void wxStopWatch::Start(long t)
  99 {
 100 #if 0
 101 // __WXMSW__
 102     LARGE_INTEGER frequency_li;
 103     ::QueryPerformanceFrequency( &frequency_li );
 104     m_frequency = frequency_li.QuadPart;
 105     if (m_frequency == 0)
 106     {
 107         m_t0 = wxGetLocalTimeMillis() - t;
 108     }
 109     else
 110     {
 111         LARGE_INTEGER counter_li;
 112         ::QueryPerformanceCounter( &counter_li );
 113         wxLongLong counter = counter_li.QuadPart;
 114         m_t0 = (counter * 10000 / m_frequency) - t*10;
 115     }
 116 #else
 117     m_t0 = wxGetLocalTimeMillis() - t;
 118 #endif
 119     m_pause = 0;
 120     m_pauseCount = 0;
 121 }
 122
 123 long wxStopWatch::GetElapsedTime() const
 124 {
 125 #if 0
 126 //__WXMSW__
 127     if (m_frequency == 0)
 128     {
 129         return (wxGetLocalTimeMillis() - m_t0).GetLo();
 130     }
 131     else
 132     {
 133         LARGE_INTEGER counter_li;
 134         ::QueryPerformanceCounter( &counter_li );
 135         wxLongLong counter = counter_li.QuadPart;
 136         wxLongLong res = (counter * 10000 / m_frequency) - m_t0;
 137         return res.GetLo() / 10;
 138     }
 139 #else
 140     return (wxGetLocalTimeMillis() - m_t0).GetLo();
 141 #endif
 142 }
 143
 144 long wxStopWatch::Time() const
 145 {
 146     return m_pauseCount ? m_pause : GetElapsedTime();
 147 }
 148
 149 #endif // wxUSE_STOPWATCH
 150
 151 // ----------------------------------------------------------------------------
 152 // old timer functions superceded by wxStopWatch
 153 // ----------------------------------------------------------------------------
 154
 155 #if wxUSE_LONGLONG
 156
 157 static wxLongLong wxStartTime = 0l;
 158
 159 // starts the global timer
 160 void wxStartTimer()
 161 {
 162     wxStartTime = wxGetLocalTimeMillis();
 163 }
 164
 165 // Returns elapsed time in milliseconds
 166 long wxGetElapsedTime(bool resetTimer)
 167 {
 168     wxLongLong oldTime = wxStartTime;
 169     wxLongLong newTime = wxGetLocalTimeMillis();
 170
 171     if ( resetTimer )
 172         wxStartTime = newTime;
 173
 174     return (newTime - oldTime).GetLo();
 175 }
 176
 177 #endif // wxUSE_LONGLONG
 178
 179 // ----------------------------------------------------------------------------
 180 // the functions to get the current time and timezone info
 181 // ----------------------------------------------------------------------------
 182
 183 // Get local time as seconds since 00:00:00, Jan 1st 1970
 184 long wxGetLocalTime()
 185 {
 186     struct tm tm;
 187     time_t t0, t1;
 188
 189     // This cannot be made static because mktime can overwrite it.
 190     //
 191     memset(&tm, 0, sizeof(tm));
 192     tm.tm_year  = 70;
 193     tm.tm_mon   = 0;
 194     tm.tm_mday  = 5;        // not Jan 1st 1970 due to mktime 'feature'
 195     tm.tm_hour  = 0;
 196     tm.tm_min   = 0;
 197     tm.tm_sec   = 0;
 198     tm.tm_isdst = -1;       // let mktime guess
 199
 200     // Note that mktime assumes that the struct tm contains local time.
 201     //
 202     t1 = time(&t1);         // now
 203     t0 = mktime(&tm);       // origin
 204
 205     // Return the difference in seconds.
 206     //
 207     if (( t0 != (time_t)-1 ) && ( t1 != (time_t)-1 ))
 208         return (long)difftime(t1, t0) + (60 * 60 * 24 * 4);
 209
 210     wxLogSysError(_("Failed to get the local system time"));
 211     return -1;
 212 }
 213
 214 // Get UTC time as seconds since 00:00:00, Jan 1st 1970
 215 long wxGetUTCTime()
 216 {
 217     return (long)time(NULL);
 218 }
 219
 220 #if wxUSE_LONGLONG
 221
 222 // Get local time as milliseconds since 00:00:00, Jan 1st 1970
 223 wxLongLong wxGetLocalTimeMillis()
 224 {
 225     wxLongLong val = 1000l;
 226
 227     // If possible, use a function which avoids conversions from
 228     // broken-up time structures to milliseconds
 229
 230 #if defined(__WXPALMOS__)
 231     DateTimeType thenst;
 232     thenst.second  = 0;
 233     thenst.minute  = 0;
 234     thenst.hour    = 0;
 235     thenst.day     = 1;
 236     thenst.month   = 1;
 237     thenst.year    = 1970;
 238     thenst.weekDay = 5;
 239     uint32_t now = TimGetSeconds();
 240     uint32_t then = TimDateTimeToSeconds (&thenst);
 241     return SysTimeToMilliSecs(SysTimeInSecs(now - then));
 242 #elif defined(__WXMSW__) && (defined(__WINE__) || defined(__MWERKS__))
 243     // This should probably be the way all WXMSW compilers should do it
 244     // Go direct to the OS for time
 245
 246     SYSTEMTIME thenst = { 1970, 1, 4, 1, 0, 0, 0, 0 };  // 00:00:00 Jan 1st 1970
 247     FILETIME thenft;
 248     SystemTimeToFileTime( &thenst, &thenft );
 249     wxLongLong then( thenft.dwHighDateTime, thenft.dwLowDateTime );   // time in 100 nanoseconds
 250
 251     SYSTEMTIME nowst;
 252     GetLocalTime( &nowst );
 253     FILETIME nowft;
 254     SystemTimeToFileTime( &nowst, &nowft );
 255     wxLongLong now( nowft.dwHighDateTime, nowft.dwLowDateTime );   // time in 100 nanoseconds
 256
 257     return ( now - then ) / 10000.0;  // time from 00:00:00 Jan 1st 1970 to now in milliseconds
 258
 259 #elif defined(HAVE_GETTIMEOFDAY)
 260     struct timeval tp;
 261     if ( wxGetTimeOfDay(&tp) != -1 )
 262     {
 263         val *= tp.tv_sec;
 264         return (val + (tp.tv_usec / 1000));
 265     }
 266     else
 267     {
 268         wxLogError(_("wxGetTimeOfDay failed."));
 269         return 0;
 270     }
 271 #elif defined(HAVE_FTIME)
 272     struct timeb tp;
 273
 274     // ftime() is void and not int in some mingw32 headers, so don't
 275     // test the return code (well, it shouldn't fail anyhow...)
 276     (void)::ftime(&tp);
 277     val *= tp.time;
 278     return (val + tp.millitm);
 279 #else // no gettimeofday() nor ftime()
 280     // We use wxGetLocalTime() to get the seconds since
 281     // 00:00:00 Jan 1st 1970 and then whatever is available
 282     // to get millisecond resolution.
 283     //
 284     // NOTE that this might lead to a problem if the clocks
 285     // use different sources, so this approach should be
 286     // avoided where possible.
 287
 288     val *= wxGetLocalTime();
 289
 290 // GRG: This will go soon as all WIN32 seem to have ftime
 291 // JACS: unfortunately not. WinCE doesn't have it.
 292 #if defined (__WIN32__)
 293     // If your platform/compiler needs to use two different functions
 294     // to get ms resolution, please do NOT just shut off these warnings,
 295     // drop me a line instead at <guille@iies.es>
 296
 297     // FIXME
 298 #ifndef __WXWINCE__
 299     #warning "Possible clock skew bug in wxGetLocalTimeMillis()!"
 300 #endif
 301
 302     SYSTEMTIME st;
 303     ::GetLocalTime(&st);
 304     val += st.wMilliseconds;
 305 #else // !Win32
 306     // If your platform/compiler does not support ms resolution please
 307     // do NOT just shut off these warnings, drop me a line instead at
 308     // <guille@iies.es>
 309
 310     #if defined(__VISUALC__) || defined (__WATCOMC__)
 311         #pragma message("wxStopWatch will be up to second resolution!")
 312     #elif defined(__BORLANDC__)
 313         #pragma message "wxStopWatch will be up to second resolution!"
 314     #else
 315         #warning "wxStopWatch will be up to second resolution!"
 316     #endif // compiler
 317 #endif
 318
 319     return val;
 320
 321 #endif // time functions
 322 }
 323
 324 #else // !wxUSE_LONGLONG
 325
 326 double wxGetLocalTimeMillis(void)
 327 {
 328     return (double(clock()) / double(CLOCKS_PER_SEC)) * 1000.0;
 329 }
 330
 331 #endif // wxUSE_LONGLONG/!wxUSE_LONGLONG