initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/stopwatch.h

@@ -0,0 +1,92 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/stopwatch.h
+// Purpose:     wxStopWatch and global time-related functions
+// Author:      Julian Smart (wxTimer), Sylvain Bougnoux (wxStopWatch),
+//              Vadim Zeitlin (time functions, current wxStopWatch)
+// Created:     26.06.03 (extracted from wx/timer.h)
+// Copyright:   (c) 1998-2003 Julian Smart, Sylvain Bougnoux
+//              (c) 2011 Vadim Zeitlin
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_STOPWATCH_H_
+#define _WX_STOPWATCH_H_
+
+#include "wx/defs.h"
+#include "wx/longlong.h"
+
+// Time-related functions are also available via this header for compatibility
+// but you should include wx/time.h directly if you need only them and not
+// wxStopWatch itself.
+#include "wx/time.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 expressed in milliseconds (i.e.
+    // calling Time() immediately afterwards returns t0). This can be used to
+    // restart an existing stopwatch.
+    void Start(long t0 = 0);
+
+    // pause the stop watch
+    void Pause()
+    {
+        if ( m_pauseCount++ == 0 )
+            m_elapsedBeforePause = GetCurrentClockValue() - m_t0;
+    }
+
+    // resume it
+    void Resume()
+    {
+        wxASSERT_MSG( m_pauseCount > 0,
+                      wxT("Resuming stop watch which is not paused") );
+
+        if ( --m_pauseCount == 0 )
+        {
+            DoStart();
+            m_t0 -= m_elapsedBeforePause;
+        }
+    }
+
+    // Get elapsed time since the last Start() in microseconds.
+    wxLongLong TimeInMicro() const;
+
+    // get elapsed time since the last Start() in milliseconds
+    long Time() const { return (TimeInMicro()/1000).ToLong(); }
+
+private:
+    // Really starts the stop watch. The initial time is set to current clock
+    // value.
+    void DoStart();
+
+    // Returns the current clock value in its native units.
+    wxLongLong GetCurrentClockValue() const;
+
+    // Return the frequency of the clock used in its ticks per second.
+    wxLongLong GetClockFreq() const;
+
+
+    // The clock value when the stop watch was last started. Its units vary
+    // depending on the platform.
+    wxLongLong m_t0;
+
+    // The elapsed time as of last Pause() call (only valid if m_pauseCount >
+    // 0) in the same units as m_t0.
+    wxLongLong m_elapsedBeforePause;
+
+    // if > 0, the stop watch is paused, otherwise it is running
+    int m_pauseCount;
+};
+
+#endif // wxUSE_STOPWATCH
+
+#endif // _WX_STOPWATCH_H_