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/*****************************************************************************
* $CAMITK_LICENCE_BEGIN$
*
* CamiTK - Computer Assisted Medical Intervention ToolKit
* (c) 2001-2018 Univ. Grenoble Alpes, CNRS, TIMC-IMAG UMR 5525 (GMCAO)
*
* Visit http://camitk.imag.fr for more information
*
* This file is part of CamiTK.
*
* CamiTK is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* CamiTK 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 Lesser General Public License version 3 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with CamiTK. If not, see <http://www.gnu.org/licenses/>.
*
* $CAMITK_LICENCE_END$
****************************************************************************/
#include "Chrono.h"
extern "C" {
#include <ctime> //
#include <sys/timeb.h> // ftime (chrono)
// #include <time.h> // gettimeofday (chrono)
#if !defined(_WIN32) || defined(__MINGW32__)
#include <sys/time.h> // gettimeofday (chrono)
#include <unistd.h>
#else // MSVC only
/*int*/ // why this int here?
#define WIN32_LEAN_AND_MEAN
#include <winsock2.h>
#include <time.h>
#if defined(_MSC_VER) || defined(__BORLANDC__)
#define EPOCHFILETIME (116444736000000000i64)
#else
#define EPOCHFILETIME (116444736000000000LL)
#endif
struct timezone {
int tz_minuteswest; /* minutes W of Greenwich */
int tz_dsttime; /* type of dst correction */
};
__inline int gettimeofday(struct timeval* tv, struct timezone* tz) {
FILETIME ft;
LARGE_INTEGER li;
__int64 t;
static int tzflag;
if (tv) {
GetSystemTimeAsFileTime(&ft);
li.LowPart = ft.dwLowDateTime;
li.HighPart = ft.dwHighDateTime;
t = li.QuadPart; /* In 100-nanosecond intervals */
t -= EPOCHFILETIME; /* Offset to the Epoch time */
t /= 10; /* In microseconds */
tv->tv_sec = (long)(t / 1000000);
tv->tv_usec = (long)(t % 1000000);
}
if (tz) {
if (!tzflag) {
_tzset();
tzflag++;
}
tz->tz_minuteswest = _timezone / 60;
tz->tz_dsttime = _daylight;
}
return 0;
}
#endif
}
// constructor/destructor Chrono();
Chrono::Chrono() {
startValue = 0.0;
stopValue = 0.0;
accumulatedTime = 0.0;
running = false;
}
Chrono::Chrono(double init) {
startValue = init;
stopValue = init;
accumulatedTime = 0.0;
running = false;
}
// start/stop Chrono
void Chrono::start() {
stopValue = startValue = getTimeInMilliseconds();
running = true;
accumulatedTime = 0.0;
}
void Chrono::start(double init) {
start();
startValue += init;
stopValue = startValue;
running = true;
}
double Chrono::stop() {
stopValue = getTimeInMilliseconds();
running = false;
return (accumulatedTime + stopValue - startValue);
}
void Chrono::hold(bool pause) {
if (pause) {
accumulatedTime = stop();
}
else {
double aTime = accumulatedTime;
start();
accumulatedTime = aTime;
}
}
// reset, restart...
void Chrono::reset() {
startValue = stopValue = accumulatedTime = 0.0;
running = false;
}
// Get value (without stopping)
double Chrono::get() const {
if (running) {
return (accumulatedTime + getTimeInMilliseconds() - startValue);
}
else {
return (accumulatedTime + stopValue - startValue);
}
}
// Get time in millisecond
double Chrono::getTimeInMilliseconds() const {
// Time perf
struct timeval timing;
struct timezone timeZone; // obsolet
// Get current time
gettimeofday(&timing, &timeZone);
// seconds and in microseconds
return ((double) timing.tv_sec + timing.tv_usec / 1e6);
}
// Print on a stream
std::ostream& operator << (std::ostream& o, const Chrono c) {
o << c.get();
return o;
}
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