2 Copyright (C) 2003, 2010 - Wolfire Games
3 Copyright (C) 2010-2017 - Lugaru contributors (see AUTHORS file)
5 This file is part of Lugaru.
7 Lugaru is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 Lugaru is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Lugaru. If not, see <http://www.gnu.org/licenses/>.
23 #include "Platform/Platform.hpp"
37 QueryPerformanceFrequency((LARGE_INTEGER*)&counterRate);
38 QueryPerformanceCounter((LARGE_INTEGER*)&baseCounter);
40 __int64 counterRate; // LARGE_INTEGER type has no math functions so use int64
43 static AppTime g_appTime;
48 QueryPerformanceCounter((LARGE_INTEGER*)&counter);
50 counter -= g_appTime.baseCounter;
53 time.lo = (unsigned long)counter;
54 time.hi = (unsigned long)(counter >> 32);
58 Duration AbsoluteDeltaToDuration(AbsoluteTime& a, AbsoluteTime& b)
63 __int64 value2 = b.hi;
69 return durationImmediate;
71 __int64 frac = value % g_appTime.counterRate;
72 value /= g_appTime.counterRate;
78 frac /= g_appTime.counterRate;
79 time = (Duration)frac;
82 frac /= g_appTime.counterRate;
85 time = (Duration)value;