gtsam
3rdparty
Eigen
bench
btl
generic_bench
timers
portable_timer.hh
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//=====================================================
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// File : portable_timer.hh
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// Author : L. Plagne <laurent.plagne@edf.fr)> from boost lib
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// Copyright (C) EDF R&D, lun sep 30 14:23:17 CEST 2002
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//=====================================================
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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// simple_time extracted from the boost library
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//
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#ifndef _PORTABLE_TIMER_HH
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#define _PORTABLE_TIMER_HH
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#include <ctime>
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#include <cstdlib>
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#include <time.h>
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#define USEC_IN_SEC 1000000
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// timer -------------------------------------------------------------------//
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// A timer object measures CPU time.
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#if defined(_MSC_VER)
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#define NOMINMAX
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#include <windows.h>
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/*#ifndef hr_timer
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#include "hr_time.h"
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#define hr_timer
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#endif*/
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class
Portable_Timer
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{
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public
:
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typedef
struct
{
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LARGE_INTEGER
start
;
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LARGE_INTEGER
stop
;
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} stopWatch;
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Portable_Timer
()
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{
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startVal.QuadPart = 0;
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stopVal.QuadPart = 0;
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QueryPerformanceFrequency(&frequency);
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}
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void
start
() { QueryPerformanceCounter(&startVal); }
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void
stop
() { QueryPerformanceCounter(&stopVal); }
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double
elapsed
() {
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LARGE_INTEGER
time
;
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time
.QuadPart = stopVal.QuadPart - startVal.QuadPart;
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return
LIToSecs(
time
);
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}
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double
user_time
() {
return
elapsed
(); }
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private
:
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double
LIToSecs(LARGE_INTEGER&
L
) {
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return
((
double
)
L
.QuadPart /(
double
)frequency.QuadPart) ;
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}
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LARGE_INTEGER startVal;
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LARGE_INTEGER stopVal;
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LARGE_INTEGER frequency;
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};
// Portable_Timer
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#elif defined(__APPLE__)
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#include <CoreServices/CoreServices.h>
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#include <mach/mach_time.h>
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class
Portable_Timer
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{
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public
:
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Portable_Timer
()
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{
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}
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void
start
()
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{
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m_start_time
= double(mach_absolute_time())*1
e
-9;;
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}
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void
stop
()
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{
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m_stop_time
= double(mach_absolute_time())*1
e
-9;;
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}
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double
elapsed
()
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{
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return
user_time
();
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}
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double
user_time
()
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{
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return
m_stop_time
-
m_start_time
;
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}
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private
:
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double
m_stop_time
,
m_start_time
;
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};
// Portable_Timer (Apple)
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#else
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <unistd.h>
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#include <sys/times.h>
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class
Portable_Timer
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{
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public
:
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Portable_Timer
()
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{
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m_clkid
=
BtlConfig::Instance
.
realclock
? CLOCK_REALTIME : CLOCK_PROCESS_CPUTIME_ID;
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}
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Portable_Timer
(
int
clkid) :
m_clkid
(clkid)
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{}
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void
start
()
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{
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timespec ts;
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clock_gettime(
m_clkid
, &ts);
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m_start_time
= double(ts.tv_sec) + 1
e
-9 * double(ts.tv_nsec);
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}
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void
stop
()
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{
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timespec ts;
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clock_gettime(
m_clkid
, &ts);
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m_stop_time
= double(ts.tv_sec) + 1
e
-9 * double(ts.tv_nsec);
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}
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double
elapsed
()
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{
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return
user_time
();
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}
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double
user_time
()
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{
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return
m_stop_time
-
m_start_time
;
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}
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private
:
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int
m_clkid
;
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double
m_stop_time
,
m_start_time
;
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};
// Portable_Timer (Linux)
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#endif
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#endif // PORTABLE_TIMER_HPP
Portable_Timer::m_stop_time
double m_stop_time
Definition:
portable_timer.hh:181
e
Array< double, 1, 3 > e(1./3., 0.5, 2.)
BtlConfig::realclock
bool realclock
Definition:
btl.hh:232
Portable_Timer::stop
void stop()
Definition:
portable_timer.hh:159
Portable_Timer::Portable_Timer
Portable_Timer()
Definition:
portable_timer.hh:143
Portable_Timer
Definition:
portable_timer.hh:139
Portable_Timer::elapsed
double elapsed()
Definition:
portable_timer.hh:167
L
MatrixXd L
Definition:
LLT_example.cpp:6
time
#define time
Definition:
timeAdaptAutoDiff.cpp:31
Portable_Timer::user_time
double user_time()
Definition:
portable_timer.hh:172
Portable_Timer::start
void start()
Definition:
portable_timer.hh:151
Portable_Timer::m_clkid
int m_clkid
Definition:
portable_timer.hh:180
Portable_Timer::Portable_Timer
Portable_Timer(int clkid)
Definition:
portable_timer.hh:148
Portable_Timer::m_start_time
double m_start_time
Definition:
portable_timer.hh:181
BtlConfig::Instance
static BtlConfig Instance
Definition:
btl.hh:229
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autogenerated on Sat Nov 16 2024 04:03:36