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 "MacCompatibility.hpp"
39 typedef long long __int64;
40 typedef __int64 LARGE_INTEGER;
41 static int QueryPerformanceFrequency(LARGE_INTEGER* liptr)
43 assert(sizeof(__int64) == 8);
44 assert(sizeof(LARGE_INTEGER) == 8);
49 static int QueryPerformanceCounter(LARGE_INTEGER* liptr)
52 gettimeofday(&tv, NULL);
53 *liptr = ((((LARGE_INTEGER)tv.tv_sec) * 1000) +
54 (((LARGE_INTEGER)tv.tv_usec) / 1000));
66 QueryPerformanceFrequency((LARGE_INTEGER*)&counterRate);
67 QueryPerformanceCounter((LARGE_INTEGER*)&baseCounter);
69 __int64 counterRate; // LARGE_INTEGER type has no math functions so use int64
72 static AppTime g_appTime;
77 QueryPerformanceCounter((LARGE_INTEGER*)&counter);
79 counter -= g_appTime.baseCounter;
82 time.lo = (unsigned long)counter;
83 time.hi = (unsigned long)(counter >> 32);
87 Duration AbsoluteDeltaToDuration(AbsoluteTime& a, AbsoluteTime& b)
92 __int64 value2 = b.hi;
98 return durationImmediate;
100 __int64 frac = value % g_appTime.counterRate;
101 value /= g_appTime.counterRate;
107 frac /= g_appTime.counterRate;
108 time = (Duration)frac;
111 frac /= g_appTime.counterRate;
114 time = (Duration)value;