92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2013 CERN
|
|
* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
|
|
*
|
|
* This program 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.
|
|
*
|
|
* This program 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 this program; if not, you may find one here:
|
|
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|
* or you may search the http://www.gnu.org website for the version 2 license,
|
|
* or you may write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
/**
|
|
* @file profile.h:
|
|
* @brief Simple profiling functions for measuring code execution time.
|
|
*/
|
|
|
|
#ifndef __TPROFILE_H
|
|
#define __TPROFILE_H
|
|
|
|
#include <sys/time.h>
|
|
#include <string>
|
|
#include <stdint.h>
|
|
|
|
/**
|
|
* Function get_tics
|
|
* Returns the number of microseconds that have elapsed since the system was started.
|
|
* @return uint64_t Number of microseconds.
|
|
*/
|
|
static inline uint64_t get_tics()
|
|
{
|
|
struct timeval tv;
|
|
gettimeofday( &tv, NULL );
|
|
|
|
return (uint64_t) tv.tv_sec * 1000000ULL + (uint64_t) tv.tv_usec;
|
|
}
|
|
|
|
/**
|
|
* Structure for storing data related to profiling counters.
|
|
*/
|
|
struct prof_counter
|
|
{
|
|
uint64_t start, end; // Stored timer value
|
|
|
|
uint64_t usecs() const
|
|
{
|
|
return end - start;
|
|
}
|
|
|
|
float msecs() const
|
|
{
|
|
return ( end - start ) / 1000.0;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Function prof_start
|
|
* Begins code execution time counting for a given profiling counter.
|
|
* @param cnt is the counter which should be started.
|
|
* @param use_rdtsc tells if processor's time-stamp counter should be used for time counting.
|
|
* Otherwise is system tics method will be used. IMPORTANT: time-stamp counter should not
|
|
* be used on multicore machines executing threaded code.
|
|
*/
|
|
static inline void prof_start( prof_counter* aCnt )
|
|
{
|
|
aCnt->start = get_tics();
|
|
}
|
|
|
|
/**
|
|
* Function prof_stop
|
|
* Ends code execution time counting for a given profiling counter.
|
|
* @param cnt is the counter which should be stopped.
|
|
*/
|
|
static inline void prof_end( prof_counter* aCnt )
|
|
{
|
|
aCnt->end = get_tics();
|
|
}
|
|
|
|
#endif
|