http://code.google.com/p/rpcs3/source/detail?r=44

wxWidgets/include/wx/stopwatch.h

@@ -0,0 +1,102 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/stopwatch.h
+// Purpose:     wxStopWatch and global time-related functions
+// Author:      Julian Smart (wxTimer), Sylvain Bougnoux (wxStopWatch)
+// Created:     26.06.03 (extracted from wx/timer.h)
+// RCS-ID:      $Id: stopwatch.h 61872 2009-09-09 22:37:05Z VZ $
+// Copyright:   (c) 1998-2003 Julian Smart, Sylvain Bougnoux
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_STOPWATCH_H_
+#define _WX_STOPWATCH_H_
+
+#include "wx/defs.h"
+#include "wx/longlong.h"
+
+// ----------------------------------------------------------------------------
+// wxStopWatch: measure time intervals with up to 1ms resolution
+// ----------------------------------------------------------------------------
+
+#if wxUSE_STOPWATCH
+
+class WXDLLIMPEXP_BASE wxStopWatch
+{
+public:
+    // ctor starts the stop watch
+    wxStopWatch() { m_pauseCount = 0; Start(); }
+
+    // start the stop watch at the moment t0
+    void Start(long t0 = 0);
+
+    // pause the stop watch
+    void Pause()
+    {
+        if ( m_pauseCount++ == 0 )
+            m_pause = GetElapsedTime();
+    }
+
+    // resume it
+    void Resume()
+    {
+        wxASSERT_MSG( m_pauseCount > 0,
+                      wxT("Resuming stop watch which is not paused") );
+
+        if ( --m_pauseCount == 0 )
+            Start(m_pause);
+    }
+
+    // get elapsed time since the last Start() in milliseconds
+    long Time() const;
+
+protected:
+    // returns the elapsed time since t0
+    long GetElapsedTime() const;
+
+private:
+    // the time of the last Start()
+    wxLongLong m_t0;
+
+    // the time of the last Pause() (only valid if m_pauseCount > 0)
+    long m_pause;
+
+    // if > 0, the stop watch is paused, otherwise it is running
+    int m_pauseCount;
+};
+
+#endif // wxUSE_STOPWATCH
+
+#if wxUSE_LONGLONG && WXWIN_COMPATIBILITY_2_6
+
+    // Starts a global timer
+    // -- DEPRECATED: use wxStopWatch instead
+    wxDEPRECATED( void WXDLLIMPEXP_BASE wxStartTimer() );
+
+    // Gets elapsed milliseconds since last wxStartTimer or wxGetElapsedTime
+    // -- DEPRECATED: use wxStopWatch instead
+    wxDEPRECATED( long WXDLLIMPEXP_BASE wxGetElapsedTime(bool resetTimer = true) );
+
+#endif // wxUSE_LONGLONG && WXWIN_COMPATIBILITY_2_6
+
+// ----------------------------------------------------------------------------
+// global time functions
+// ----------------------------------------------------------------------------
+
+// Get number of seconds since local time 00:00:00 Jan 1st 1970.
+extern long WXDLLIMPEXP_BASE wxGetLocalTime();
+
+// Get number of seconds since GMT 00:00:00, Jan 1st 1970.
+extern long WXDLLIMPEXP_BASE wxGetUTCTime();
+
+#if wxUSE_LONGLONG
+    typedef wxLongLong wxMilliClock_t;
+#else
+    typedef double wxMilliClock_t;
+#endif // wxUSE_LONGLONG
+
+// Get number of milliseconds since local time 00:00:00 Jan 1st 1970
+extern wxMilliClock_t WXDLLIMPEXP_BASE wxGetLocalTimeMillis();
+
+#define wxGetCurrentTime() wxGetLocalTime()
+
+#endif // _WX_STOPWATCH_H_