openspades/Sources/Core/Stopwatch.cpp
Tomoaki Kawada 624d291f79 Update #includes
- Reorder them so that system libraries come first
- Use C++-style headers (`<cmath>`) instead of C-style headers (`<math.h>`)
2016-12-03 19:04:58 +09:00

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1.4 KiB
C++

/*
Copyright (c) 2013 yvt
This file is part of OpenSpades.
OpenSpades 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 3 of the License, or
(at your option) any later version.
OpenSpades 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.
You should have received a copy of the GNU General Public License
along with OpenSpades. If not, see <http://www.gnu.org/licenses/>.
*/
#include <Imports/SDL.h>
#include "Stopwatch.h"
#include "Debug.h"
#ifdef WIN32
#include <windows.h>
static double GetSWTicks() {
LARGE_INTEGER val, freq;
if (QueryPerformanceFrequency(&freq) == 0 || freq.QuadPart == 0 ||
QueryPerformanceCounter(&val) == 0 || val.QuadPart == 0) {
return (uint64_t)GetTickCount() / 1000.;
}
return (double)val.QuadPart / (double)freq.QuadPart;
}
#else
#include <sys/time.h>
static double GetSWTicks() {
struct timeval val;
gettimeofday(&val, NULL);
return (double)val.tv_usec / 1000000. + (double)val.tv_sec;
}
#endif
namespace spades {
Stopwatch::Stopwatch() { Reset(); }
void Stopwatch::Reset() { start = GetSWTicks(); }
double Stopwatch::GetTime() { return GetSWTicks() - start; }
}