vmap/radiant/timer.h

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2020-11-17 11:16:16 +00:00
/*
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
*/
#if !defined ( INCLUDED_TIMER_H )
#define INCLUDED_TIMER_H
#if 1
const int msec_per_sec = 1000;
class MillisecondTime {
unsigned int m_milliseconds;
public:
MillisecondTime(unsigned int milliseconds)
: m_milliseconds(milliseconds)
{
}
MillisecondTime()
{
}
static MillisecondTime current();
unsigned int milliseconds_since(const MillisecondTime &other) const
{
return m_milliseconds - other.m_milliseconds;
}
};
template<typename tick_type>
inline MillisecondTime time_from_ticks(tick_type tick_count, tick_type ticks_per_sec)
{
return MillisecondTime(
static_cast<unsigned int>( tick_count / static_cast<double>( ticks_per_sec / msec_per_sec )));
}
#else
const unsigned int usec_per_sec = 1000000;
class MillisecondTime
{
unsigned int m_sec;
unsigned int m_usec;
public:
MillisecondTime( unsigned int sec, unsigned int usec )
: m_sec( sec ), m_usec( usec ){
}
MillisecondTime(){
}
staticMillisecondTime current();
unsigned int milliseconds_since( const MillisecondTime& other ) const {
return static_cast<unsigned int>( ( m_sec * static_cast<double>( usec_per_sec ) + m_usec )
- ( other.m_sec * static_cast<double>( usec_per_sec ) + other.m_usec ) ) / 1000;
}
};
template<typename tick_type>
inline MillisecondTime time_from_ticks( tick_type tick_count, tick_type ticks_per_sec ){
return MillisecondTime( static_cast<unsigned int>( tick_count / ticks_per_sec ),
static_cast<unsigned int>( ( tick_count % ticks_per_sec ) * ( usec_per_sec / static_cast<double>( ticks_per_sec ) ) ) );
}
#endif
class Timer {
MillisecondTime m_start;
public:
void start()
{
m_start = MillisecondTime::current();
}
unsigned int elapsed_msec()
{
return MillisecondTime::current().milliseconds_since(m_start);
}
};
#endif