/usr/include/simgear/misc/stopwatch.hxx is in libsimgear-dev 3.4.0-3.
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 | /**
* \file stopwatch.hxx
* Timer class, for use in benchmarking
* Based on blitz/Timer.h
*
* Copyright (C) 1997,1998 Todd Veldhuizen <tveldhui@seurat.uwaterloo.ca>
*
* Suggestions: blitz-suggest@cybervision.com
* Bugs: blitz-bugs@cybervision.com
*
* For more information, please see the Blitz++ Home Page:
* http://seurat.uwaterloo.ca/blitz/
*/
/*
* $Id$
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* 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 GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
// This class is not portable to non System V platforms.
// It will need to be rewritten for Windows, NT, Mac.
// NEEDS_WORK
#ifndef _STOPWATCH_HXX
#define _STOPWATCH_HXX
#ifndef __cplusplus
# error This library requires C++
#endif
#ifdef HAVE_CONFIG_H
# include <simgear_config.h>
#endif
#if defined(__linux__) && ! defined(HAVE_GETRUSAGE)
# define HAVE_GETRUSAGE
#endif
#if defined( WIN32 ) && defined( HAVE_GETRUSAGE )
# undef HAVE_GETRUSAGE
#endif // WIN32
#if defined( HAVE_GETRUSAGE )
# if defined( __FreeBSD__ )
# include <sys/types.h>
# endif
# include <sys/time.h>
# include <sys/resource.h>
# include <unistd.h>
#elif defined( WIN32 )
# include <windows.h>
#else
# include <time.h>
#endif
/**
* A high resolutions timing class
*/
class StopWatch {
public:
/** Constructor */
StopWatch() {
// state_ = uninitialized;
}
/** Start counting time */
void start() {
// state_ = running;
t1_ = systemTime();
}
/** Stop counting time */
void stop() {
t2_ = systemTime();
// BZPRECONDITION(state_ == running);
// state_ = stopped;
}
/** @return the elapsed time between start and stop */
double elapsedSeconds()
{
// BZPRECONDITION(state_ == stopped);
return t2_ - t1_;
}
private:
StopWatch(StopWatch&) { }
void operator=(StopWatch&) { }
double systemTime()
{
#if defined( HAVE_GETRUSAGE )
getrusage(RUSAGE_SELF, &resourceUsage_);
double seconds = resourceUsage_.ru_utime.tv_sec
+ resourceUsage_.ru_stime.tv_sec;
double micros = resourceUsage_.ru_utime.tv_usec
+ resourceUsage_.ru_stime.tv_usec;
return seconds + micros/1.0e6;
#elif defined( WIN32 )
return double(GetTickCount()) * double(1e-3);
#else
return clock() / (double) CLOCKS_PER_SEC;
#endif
}
// enum { uninitialized, running, stopped } state_;
#if defined( HAVE_GETRUSAGE )
struct rusage resourceUsage_;
#endif
double t1_, t2_;
};
#endif // _STOPWATCH_HXX
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