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/*
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
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