1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
#ifndef DATE_TIME_TIME_RESOLUTION_TRAITS_HPP
#define DATE_TIME_TIME_RESOLUTION_TRAITS_HPP
/* Copyright (c) 2002,2003 CrystalClear Software, Inc.
* Use, modification and distribution is subject to the
* Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
* Author: Jeff Garland, Bart Garst
* $Date$
*/
#include <ctime>
#include <boost/cstdint.hpp>
#include <boost/date_time/time_defs.hpp>
#include <boost/date_time/int_adapter.hpp>
#include <boost/date_time/compiler_config.hpp>
namespace boost {
namespace date_time {
//! Simple function to calculate absolute value of a numeric type
template <typename T>
// JDG [7/6/02 made a template],
// moved here from time_duration.hpp 2003-Sept-4.
inline T absolute_value(T x)
{
return x < 0 ? -x : x;
}
//! traits struct for time_resolution_traits implementation type
struct time_resolution_traits_bi32_impl {
typedef boost::int32_t int_type;
typedef boost::int32_t impl_type;
static int_type as_number(impl_type i){ return i;}
//! Used to determine if implemented type is int_adapter or int
static bool is_adapted() { return false;}
};
//! traits struct for time_resolution_traits implementation type
struct time_resolution_traits_adapted32_impl {
typedef boost::int32_t int_type;
typedef boost::date_time::int_adapter<boost::int32_t> impl_type;
static int_type as_number(impl_type i){ return i.as_number();}
//! Used to determine if implemented type is int_adapter or int
static bool is_adapted() { return true;}
};
//! traits struct for time_resolution_traits implementation type
struct time_resolution_traits_bi64_impl {
typedef boost::int64_t int_type;
typedef boost::int64_t impl_type;
static int_type as_number(impl_type i){ return i;}
//! Used to determine if implemented type is int_adapter or int
static bool is_adapted() { return false;}
};
//! traits struct for time_resolution_traits implementation type
struct time_resolution_traits_adapted64_impl {
typedef boost::int64_t int_type;
typedef boost::date_time::int_adapter<boost::int64_t> impl_type;
static int_type as_number(impl_type i){ return i.as_number();}
//! Used to determine if implemented type is int_adapter or int
static bool is_adapted() { return true;}
};
template<typename frac_sec_type,
time_resolutions res,
#if (defined(BOOST_MSVC) && (_MSC_VER < 1300))
boost::int64_t resolution_adjust,
#else
typename frac_sec_type::int_type resolution_adjust,
#endif
unsigned short frac_digits,
typename var_type = std::time_t >
class time_resolution_traits {
public:
typedef typename frac_sec_type::int_type fractional_seconds_type;
typedef typename frac_sec_type::int_type tick_type;
typedef typename frac_sec_type::impl_type impl_type;
typedef var_type day_type;
typedef var_type hour_type;
typedef var_type min_type;
typedef var_type sec_type;
// bring in function from frac_sec_type traits structs
static fractional_seconds_type as_number(impl_type i)
{
return frac_sec_type::as_number(i);
}
static bool is_adapted()
{
return frac_sec_type::is_adapted();
}
//Would like this to be frac_sec_type, but some compilers complain
#if (defined(BOOST_MSVC) && (_MSC_VER < 1300))
BOOST_STATIC_CONSTANT(boost::int64_t, ticks_per_second = resolution_adjust);
#else
BOOST_STATIC_CONSTANT(fractional_seconds_type, ticks_per_second = resolution_adjust);
#endif
static time_resolutions resolution()
{
return res;
}
static unsigned short num_fractional_digits()
{
return frac_digits;
}
static fractional_seconds_type res_adjust()
{
return resolution_adjust;
}
//! Any negative argument results in a negative tick_count
static tick_type to_tick_count(hour_type hours,
min_type minutes,
sec_type seconds,
fractional_seconds_type fs)
{
if(hours < 0 || minutes < 0 || seconds < 0 || fs < 0)
{
hours = absolute_value(hours);
minutes = absolute_value(minutes);
seconds = absolute_value(seconds);
fs = absolute_value(fs);
return static_cast<tick_type>(((((fractional_seconds_type(hours)*3600)
+ (fractional_seconds_type(minutes)*60)
+ seconds)*res_adjust()) + fs) * -1);
}
return static_cast<tick_type>((((fractional_seconds_type(hours)*3600)
+ (fractional_seconds_type(minutes)*60)
+ seconds)*res_adjust()) + fs);
}
};
typedef time_resolution_traits<time_resolution_traits_adapted32_impl, milli, 1000, 3 > milli_res;
typedef time_resolution_traits<time_resolution_traits_adapted64_impl, micro, 1000000, 6 > micro_res;
typedef time_resolution_traits<time_resolution_traits_adapted64_impl, nano, 1000000000, 9 > nano_res;
} } //namespace date_time
#endif
|
