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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: wx/stopwatch.h
3 // Purpose: wxStopWatch and global time-related functions
4 // Author: Julian Smart (wxTimer), Sylvain Bougnoux (wxStopWatch)
5 // Created: 26.06.03 (extracted from wx/timer.h)
6 // RCS-ID: $Id$
7 // Copyright: (c) 1998-2003 Julian Smart, Sylvain Bougnoux
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
10
11 #ifndef _WX_STOPWATCH_H_
12 #define _WX_STOPWATCH_H_
13
14 #include "wx/defs.h"
15 #include "wx/longlong.h"
16
17 // ----------------------------------------------------------------------------
18 // wxStopWatch: measure time intervals with up to 1ms resolution
19 // ----------------------------------------------------------------------------
20
21 #if wxUSE_STOPWATCH
22
23 class WXDLLIMPEXP_BASE wxStopWatch
24 {
25 public:
26 // ctor starts the stop watch
27 wxStopWatch() { m_pauseCount = 0; Start(); }
28
29 // start the stop watch at the moment t0
30 void Start(long t0 = 0);
31
32 // pause the stop watch
33 void Pause()
34 {
35 if ( m_pauseCount++ == 0 )
36 m_pause = GetElapsedTime();
37 }
38
39 // resume it
40 void Resume()
41 {
42 wxASSERT_MSG( m_pauseCount > 0,
43 _T("Resuming stop watch which is not paused") );
44
45 if ( --m_pauseCount == 0 )
46 Start(m_pause);
47 }
48
49 // get elapsed time since the last Start() in milliseconds
50 long Time() const;
51
52 protected:
53 // returns the elapsed time since t0
54 long GetElapsedTime() const;
55
56 private:
57 // the time of the last Start()
58 wxLongLong m_t0;
59
60 // the time of the last Pause() (only valid if m_pauseCount > 0)
61 long m_pause;
62
63 // if > 0, the stop watch is paused, otherwise it is running
64 int m_pauseCount;
65 };
66
67 #endif // wxUSE_STOPWATCH
68
69 #if wxUSE_LONGLONG && WXWIN_COMPATIBILITY_2_6
70
71 // Starts a global timer
72 // -- DEPRECATED: use wxStopWatch instead
73 wxDEPRECATED( void WXDLLIMPEXP_BASE wxStartTimer() );
74
75 // Gets elapsed milliseconds since last wxStartTimer or wxGetElapsedTime
76 // -- DEPRECATED: use wxStopWatch instead
77 wxDEPRECATED( long WXDLLIMPEXP_BASE wxGetElapsedTime(bool resetTimer = true) );
78
79 #endif // wxUSE_LONGLONG && WXWIN_COMPATIBILITY_2_6
80
81 // ----------------------------------------------------------------------------
82 // global time functions
83 // ----------------------------------------------------------------------------
84
85 // Get number of seconds since local time 00:00:00 Jan 1st 1970.
86 extern long WXDLLIMPEXP_BASE wxGetLocalTime();
87
88 // Get number of seconds since GMT 00:00:00, Jan 1st 1970.
89 extern long WXDLLIMPEXP_BASE wxGetUTCTime();
90
91 #if wxUSE_LONGLONG
92 typedef wxLongLong wxMilliClock_t;
93 inline long wxMilliClockToLong(wxLongLong ll) { return ll.ToLong(); }
94 #else
95 typedef double wxMilliClock_t;
96 inline long wxMilliClockToLong(double d) { return wx_truncate_cast(long, d); }
97 #endif // wxUSE_LONGLONG
98
99 // Get number of milliseconds since local time 00:00:00 Jan 1st 1970
100 extern wxMilliClock_t WXDLLIMPEXP_BASE wxGetLocalTimeMillis();
101
102 #define wxGetCurrentTime() wxGetLocalTime()
103
104 // on some really old systems gettimeofday() doesn't have the second argument,
105 // define wxGetTimeOfDay() to hide this difference
106 #ifdef HAVE_GETTIMEOFDAY
107 #ifdef WX_GETTIMEOFDAY_NO_TZ
108 #define wxGetTimeOfDay(tv) gettimeofday(tv)
109 #else
110 #define wxGetTimeOfDay(tv) gettimeofday((tv), NULL)
111 #endif
112 #endif // HAVE_GETTIMEOFDAY
113
114 #endif // _WX_STOPWATCH_H_