ocrm.bsky.social
the game where you go into mines and start crafting! but for consoles (forked directly from smartcmd's github)
1// Copyright (C) 2006 Douglas Gregor <doug.gregor -at- gmail.com>
2
3// Use, modification and distribution is subject to the Boost Software
4// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5// http://www.boost.org/LICENSE_1_0.txt)
6
7/** @file timer.hpp
8 *
9 * This header provides the @c timer class, which provides access to
10 * the MPI timers.
11 */
12#ifndef BOOST_MPI_TIMER_HPP
13#define BOOST_MPI_TIMER_HPP
14
15#include <boost/mpi/config.hpp>
16#include <boost/limits.hpp>
17
18namespace boost { namespace mpi {
19
20/** @brief A simple timer that provides access to the MPI timing
21 * facilities.
22 *
23 * The @c timer class is a simple wrapper around the MPI timing
24 * facilities that mimics the interface of the Boost Timer library.
25 */
26class BOOST_MPI_DECL timer {
27public:
28 /** Initializes the timer
29 *
30 * @post @c elapsed() == 0
31 */
32 timer();
33
34 /** Restart the timer.
35 *
36 * @post @c elapsed() == 0
37 */
38 void restart();
39
40 /** Return the amount of time that has elapsed since the last
41 * construction or reset, in seconds.
42 */
43 double elapsed() const;
44
45 /** Return an estimate of the maximum possible value of
46 * elapsed(). Note that this routine may return too high a value on
47 * some systems.
48 */
49 double elapsed_max() const;
50
51 /** Returns the minimum non-zero value that @c elapsed() may
52 * return. This is the resolution of the timer.
53 */
54 double elapsed_min() const;
55
56 /** Determines whether the elapsed time values are global times or
57 local processor times. */
58 static bool time_is_global();
59
60private:
61 double start_time;
62}; // timer
63
64inline timer::timer()
65{
66 restart();
67}
68
69inline void timer::restart()
70{
71 start_time = MPI_Wtime();
72}
73
74inline double timer::elapsed() const
75{
76 return MPI_Wtime() - start_time;
77}
78
79inline double timer::elapsed_max() const
80{
81 return (std::numeric_limits<double>::max)();
82}
83
84inline double timer::elapsed_min() const
85{
86 return MPI_Wtick();
87}
88
89} } // end namespace boost::mpi
90
91#endif // BOOST_MPI_TIMER_HPP