mirror of https://github.com/CGAL/cgal
129 lines
3.3 KiB
C++
129 lines
3.3 KiB
C++
// ======================================================================
|
|
//
|
|
// Copyright (c) 1997 The CGAL Consortium
|
|
//
|
|
// This software and related documentation is part of an INTERNAL release
|
|
// of the Computational Geometry Algorithms Library (CGAL). It is not
|
|
// intended for general use.
|
|
//
|
|
// ----------------------------------------------------------------------
|
|
//
|
|
// release :
|
|
// release_date :
|
|
//
|
|
// file : include/CGAL/Timer.h
|
|
// package : Timer (1.9)
|
|
// maintainer : Matthias Baesken <baesken@informatik.uni-trier.de>
|
|
// revision : 1.9
|
|
// revision_date : 4 April 2001
|
|
// author(s) : Lutz Kettner <kettner@inf.ethz.ch>
|
|
// Matthias Baesken <baesken@informatik.uni-halle.de>
|
|
// coordinator : INRIA, Sophia Antipolis
|
|
//
|
|
// A timer class to measure cpu time of user-processes.
|
|
// ======================================================================
|
|
|
|
#ifndef CGAL_TIMER_H
|
|
#define CGAL_TIMER_H 1
|
|
|
|
#ifndef CGAL_BASIC_H
|
|
#include <CGAL/basic.h>
|
|
#endif
|
|
#ifndef CGAL_PROTECT_CSTDLIB
|
|
#include <cstdlib>
|
|
#define CGAL_PROTECT_CSTDLIB
|
|
#endif
|
|
#ifndef CGAL_PROTECT_CLIMITS
|
|
#include <climits>
|
|
#define CGAL_PROTECT_CLIMITS
|
|
#endif
|
|
|
|
// used for clock()
|
|
#ifndef CGAL_PROTECT_CTIME
|
|
#include <ctime>
|
|
#define CGAL_PROTECT_CTIME
|
|
#endif
|
|
|
|
CGAL_BEGIN_NAMESPACE
|
|
|
|
// SECTION: A Timer for User-Process Time
|
|
// ========================================================================
|
|
//
|
|
// DEFINITION
|
|
//
|
|
// A timer `t' of type Timer is an object with a state. It is either
|
|
// running or it is stopped. The state is controlled with `t.start()'
|
|
// and `t.stop()'. The timer counts the time elapsed since its creation
|
|
// or last reset. It counts only the time where it is in the running
|
|
// state. The time information is given in seconds.
|
|
|
|
class Timer {
|
|
private:
|
|
CGAL_CLIB_STD::clock_t elapsed;
|
|
CGAL_CLIB_STD::clock_t started;
|
|
int interv;
|
|
bool running;
|
|
|
|
public:
|
|
Timer() : elapsed(0), started(0), interv(0), running(false) {}
|
|
|
|
void start();
|
|
void stop ();
|
|
void reset();
|
|
bool is_running() const { return running; }
|
|
|
|
double time() const;
|
|
int intervals() const { return interv; }
|
|
double precision() const { return 0.01; }
|
|
double max() const { return 2146.0;}
|
|
};
|
|
|
|
|
|
/*****************************************************************************/
|
|
|
|
// Member functions Timer
|
|
// ===========================
|
|
|
|
inline void Timer::start() {
|
|
CGAL_assertion( ! running);
|
|
started = CGAL_CLIB_STD::clock();
|
|
if (started == (CGAL_CLIB_STD::clock_t)-1) {
|
|
// possible on Solaris according to man-page
|
|
#if defined (_MSC_VER)
|
|
std::cout << "Timer error: CGAL_CLIB_STD::clock() returned -1.\n";
|
|
#else
|
|
std::cerr << "Timer error: CGAL_CLIB_STD::clock() returned -1.\n";
|
|
#endif
|
|
CGAL_CLIB_STD::abort();
|
|
}
|
|
running = true;
|
|
++ interv;
|
|
}
|
|
|
|
inline void Timer::stop() {
|
|
CGAL_assertion( running);
|
|
elapsed += CGAL_CLIB_STD::clock() - started;
|
|
running = false;
|
|
}
|
|
|
|
inline void Timer::reset() {
|
|
interv = 0;
|
|
elapsed = 0;
|
|
if (running) {
|
|
started = CGAL_CLIB_STD::clock();
|
|
++ interv;
|
|
}
|
|
}
|
|
|
|
inline double Timer::time() const {
|
|
if (running) {
|
|
return double( elapsed + CGAL_CLIB_STD::clock() - started) / CLOCKS_PER_SEC;
|
|
}
|
|
return double(elapsed) / CLOCKS_PER_SEC;
|
|
}
|
|
|
|
CGAL_END_NAMESPACE
|
|
|
|
#endif // CGAL_TIMER_H //
|
|
// EOF //
|