gtkradiant/radiant/timer.cpp

110 lines
2.1 KiB
C++

/*
Copyright (C) 2001-2006, William Joseph.
All Rights Reserved.
This file is part of GtkRadiant.
GtkRadiant 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 2 of the License, or
(at your option) any later version.
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "timer.h"
#if defined(WIN32)
#include <windows.h>
MillisecondTime MillisecondTime::current()
{
static class Cached
{
LONGLONG m_frequency;
LONGLONG m_base;
public:
Cached()
{
QueryPerformanceFrequency((LARGE_INTEGER *) &m_frequency);
QueryPerformanceCounter((LARGE_INTEGER *) &m_base);
}
LONGLONG frequency()
{
return m_frequency;
}
LONGLONG base()
{
return m_base;
}
} cached;
if(cached.frequency() > 0)
{
LONGLONG count;
QueryPerformanceCounter((LARGE_INTEGER *) &count);
return time_from_ticks(count - cached.base(), cached.frequency());
}
else
{
#if 1
return MillisecondTime();
#else
return time_from_ticks(timeGetTime(), 1000);
#endif
}
}
#elif defined(POSIX)
#include <time.h>
#include "sys/time.h"
MillisecondTime MillisecondTime::current()
{
static class Cached
{
time_t m_base;
public:
Cached()
{
time(&m_base);
}
time_t base()
{
return m_base;
}
} cached;
timeval time;
gettimeofday(&time, 0);
return MillisecondTime((time.tv_sec - cached.base()) * 1000 + time.tv_usec / 1000);
}
#else
#include <ctime>
MillisecondTime MillisecondTime::current()
{
return time_from_ticks<std::clock_t>(std::clock(), CLOCKS_PER_SEC);
}
#endif