62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
// Copyright 2015 Vicente J. Botet Escriba
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// See http://www.boost.org/LICENSE_1_0.txt
|
|
// See http://www.boost.org/libs/chrono for documentation.
|
|
|
|
#define BOOST_CHRONO_VERION 2
|
|
#include <iostream>
|
|
#include <boost/chrono/chrono.hpp>
|
|
#include <boost/chrono/chrono_io.hpp>
|
|
|
|
// a custom clock
|
|
// here based on boost's own system_clock
|
|
class MyMillenniumClock
|
|
{
|
|
public:
|
|
typedef boost::chrono::system_clock::rep rep;
|
|
typedef boost::chrono::system_clock::period period;
|
|
typedef boost::chrono::duration<rep, period> duration;
|
|
typedef boost::chrono::time_point<MyMillenniumClock> time_point;
|
|
|
|
BOOST_STATIC_CONSTEXPR bool is_steady = boost::chrono::system_clock::is_steady;
|
|
|
|
public:
|
|
/// Returns a time_point representing the current value of the clock.
|
|
static time_point now() {
|
|
return time_point(boost::chrono::system_clock::now().time_since_epoch() - boost::chrono::hours(30*365));
|
|
}
|
|
};
|
|
|
|
|
|
namespace boost
|
|
{
|
|
namespace chrono
|
|
{
|
|
template <class CharT>
|
|
struct clock_string<MyMillenniumClock, CharT>
|
|
{
|
|
static std::basic_string<CharT> name() {
|
|
static const CharT a[] = {'M', 'y', 'M', 'i', 'l', 'l', 'e', 'n', 'n', 'i', 'u', 'm', 'C', 'l', 'o', 'c', 'k'};
|
|
return std::basic_string<CharT>(a, a + sizeof(a)/sizeof(a[0]));
|
|
}
|
|
static std::basic_string<CharT> since() {
|
|
static const CharT a[] = {' ', 's', 'i', 'n', 'c', 'e', ' ', 'y', 'e', 'a', 'r', ' ', '2', 'k'};
|
|
return std::basic_string<CharT>(a, a + sizeof(a)/sizeof(a[0]));
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
template <typename CharT, typename TPUFacet>
|
|
std::basic_string<CharT> get_epoch_custom(MyMillenniumClock, TPUFacet&)
|
|
{
|
|
return boost::chrono::clock_string<MyMillenniumClock,CharT>::since();
|
|
}
|
|
|
|
int main()
|
|
{
|
|
std::cout << boost::chrono::steady_clock::now() << std::endl;
|
|
std::cout << MyMillenniumClock::now() << std::endl;
|
|
return 0;
|
|
}
|