2 Copyright (C) 2003, 2010 - Wolfire Games
3 Copyright (C) 2010-2016 - 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/>.
21 #include "WinDefs.hpp"
35 QueryPerformanceFrequency((LARGE_INTEGER*)&counterRate);
36 QueryPerformanceCounter((LARGE_INTEGER*)&baseCounter);
38 __int64 counterRate; // LARGE_INTEGER type has no math functions so use int64
41 static AppTime g_appTime;
46 QueryPerformanceCounter((LARGE_INTEGER*)&counter);
48 counter -= g_appTime.baseCounter;
51 time.lo = (unsigned long)counter;
52 time.hi = (unsigned long)(counter >> 32);
56 Duration AbsoluteDeltaToDuration(AbsoluteTime& a, AbsoluteTime& b)
61 __int64 value2 = b.hi;
67 return durationImmediate;
69 __int64 frac = value % g_appTime.counterRate;
70 value /= g_appTime.counterRate;
76 frac /= g_appTime.counterRate;
77 time = (Duration)frac;
80 frac /= g_appTime.counterRate;
83 time = (Duration)value;