/usr/include/osg/Timer is in libopenscenegraph-dev 3.0.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library 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
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_TIMER
#define OSG_TIMER 1
#include <osg/Export>
namespace osg {
#if defined(_MSC_VER)
typedef __int64 Timer_t;
#else
typedef unsigned long long Timer_t;
#endif
/** Timer class is used for measuring elapsed time or time between two points. */
class OSG_EXPORT Timer {
public:
Timer();
~Timer() {}
static Timer* instance();
/** Get the timers tick value.*/
Timer_t tick() const;
/** Set the start.*/
void setStartTick() { _startTick = tick(); }
void setStartTick(Timer_t t) { _startTick = t; }
Timer_t getStartTick() const { return _startTick; }
/** Get elapsed time in seconds.*/
inline double time_s() const { return delta_s(_startTick, tick()); }
/** Get elapsed time in milliseconds.*/
inline double time_m() const { return delta_m(_startTick, tick()); }
/** Get elapsed time in microseconds.*/
inline double time_u() const { return delta_u(_startTick, tick()); }
/** Get elapsed time in nanoseconds.*/
inline double time_n() const { return delta_n(_startTick, tick()); }
/** Get the time in seconds between timer ticks t1 and t2.*/
inline double delta_s( Timer_t t1, Timer_t t2 ) const { return (double)(t2 - t1)*_secsPerTick; }
/** Get the time in milliseconds between timer ticks t1 and t2.*/
inline double delta_m( Timer_t t1, Timer_t t2 ) const { return delta_s(t1,t2)*1e3; }
/** Get the time in microseconds between timer ticks t1 and t2.*/
inline double delta_u( Timer_t t1, Timer_t t2 ) const { return delta_s(t1,t2)*1e6; }
/** Get the time in nanoseconds between timer ticks t1 and t2.*/
inline double delta_n( Timer_t t1, Timer_t t2 ) const { return delta_s(t1,t2)*1e9; }
/** Get the the number of seconds per tick. */
inline double getSecondsPerTick() const { return _secsPerTick; }
protected :
Timer_t _startTick;
double _secsPerTick;
};
/** Helper class for timing sections of code. */
class ElapsedTime
{
public:
inline ElapsedTime(double* elapsedTime, osg::Timer* timer = 0):
_time(elapsedTime)
{
init(timer);
}
inline ElapsedTime(osg::Timer* timer = 0):
_time(0)
{
init(timer);
}
inline ~ElapsedTime()
{
finish();
}
inline void reset()
{
_startTick = _timer->tick();
}
/** elapsed time in seconds. */
inline double elapsedTime() const
{
return _timer->delta_s(_startTick, _timer->tick());
}
/** elapsed time in milliseconds. */
inline double elapsedTime_m() const
{
return _timer->delta_m(_startTick, _timer->tick());
}
/** elapsed time in microseconds. */
inline double elapsedTime_u() const
{
return _timer->delta_u(_startTick, _timer->tick());
}
/** elapsed time in nanoseconds. */
inline double elapsedTime_n() const
{
return _timer->delta_n(_startTick, _timer->tick());
}
inline void finish()
{
Timer_t endTick = _timer->tick();
if (_time) *_time += _timer->delta_s(_startTick, endTick);
_startTick = endTick;
}
protected:
inline void init(osg::Timer* timer)
{
if (timer) _timer = timer;
else _timer = osg::Timer::instance();
_startTick = _timer->tick();
}
double* _time;
Timer* _timer;
Timer_t _startTick;
};
}
#endif
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