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"
35 typedef long long __int64;
36 typedef __int64 LARGE_INTEGER;
37 static int QueryPerformanceFrequency(LARGE_INTEGER* liptr)
39 assert(sizeof(__int64) == 8);
40 assert(sizeof(LARGE_INTEGER) == 8);
45 static int QueryPerformanceCounter(LARGE_INTEGER* liptr)
48 gettimeofday(&tv, NULL);
49 *liptr = ((((LARGE_INTEGER)tv.tv_sec) * 1000) +
50 (((LARGE_INTEGER)tv.tv_usec) / 1000));
61 QueryPerformanceFrequency((LARGE_INTEGER*)&counterRate);
62 QueryPerformanceCounter((LARGE_INTEGER*)&baseCounter);
64 __int64 counterRate; // LARGE_INTEGER type has no math functions so use int64
67 static AppTime g_appTime;
72 QueryPerformanceCounter((LARGE_INTEGER*)&counter);
74 counter -= g_appTime.baseCounter;
77 time.lo = (unsigned long)counter;
78 time.hi = (unsigned long)(counter >> 32);
82 Duration AbsoluteDeltaToDuration(AbsoluteTime& a, AbsoluteTime& b)
87 __int64 value2 = b.hi;
93 return durationImmediate;
96 __int64 frac = value % g_appTime.counterRate;
97 value /= g_appTime.counterRate;
103 frac /= g_appTime.counterRate;
104 time = (Duration)frac;
107 frac /= g_appTime.counterRate;
110 time = (Duration)value;
116 #endif // PLATFORM_UNIX