Release ETL_0_04_09

[synfig.git] / ETL / tags / ETL_0_04_09 / ETL / _clock_win32hpcount.h

diff --git a/ETL/tags/ETL_0_04_09/ETL/_clock_win32hpcount.h b/ETL/tags/ETL_0_04_09/ETL/_clock_win32hpcount.h
new file mode 100644 (file)
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+++ b/ETL/tags/ETL_0_04_09/ETL/_clock_win32hpcount.h
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+/*! ========================================================================
+** Extended Template and Library
+** Win32 Clock Description Implementation
+** $Id$
+**
+** Copyright (c) 2002 Robert B. Quattlebaum Jr.
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+** General Public License for more details.
+**
+** === N O T E S ===========================================================
+**
+** This is an internal header file, included by other ETL headers.
+** You should not attempt to use it directly.
+**
+** ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __ETL__CLOCK_WIN32HPCOUNT_H
+#define __ETL__CLOCK_WIN32HPCOUNT_H
+
+/* === H E A D E R S ======================================================= */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+/* === M A C R O S ========================================================= */
+
+#if defined(__GNUG__) && defined(__int64)
+#undef __int64
+#define __int64 long long int
+#endif
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+_ETL_BEGIN_NAMESPACE
+
+class clock_desc_win32hpcount
+{
+public:
+       typedef double value_type;
+
+       static bool realtime()
+       { return true; }
+
+       static bool proctime()
+       { return false; }
+
+       static value_type
+       one_second()
+       { return 1.0f; }
+
+       static value_type precision()
+       {
+               __int64 freq;
+               QueryPerformanceFrequency((LARGE_INTEGER*)&freq);
+               return one_second()/(value_type)freq;
+       }
+
+       static const char *description()
+       { return "Win32 QueryPerformanceCounter()"; };
+
+protected:
+       typedef __int64 timestamp;
+
+       static void
+       get_current_time(timestamp &x)
+       { QueryPerformanceCounter((LARGE_INTEGER*)&x);}
+
+       static timestamp
+       get_current_time()
+       { timestamp ret; QueryPerformanceCounter((LARGE_INTEGER*)&ret); return ret; }
+
+       static value_type
+       timestamp_to_seconds(const timestamp &x)
+       { return precision()*x; }
+
+       static timestamp
+       seconds_to_timestamp(const value_type &x)
+       { return (timestamp)(x/precision()); }
+};
+
+_ETL_END_NAMESPACE
+
+/* === E N D =============================================================== */
+
+#endif
+