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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
#include "base/assert.hpp"
#include "base/get_time.hpp"
#include "base/macros.hpp"
#include "base/timegm.hpp"
#include "base/timer.hpp"
#include "std/target_os.hpp"
#include <algorithm>
#include <chrono>
#include <cstdio>
#include <iomanip>
#include <sstream>
#include <sys/time.h>
namespace my
{
Timer::Timer(bool start/* = true*/)
{
if (start)
Reset();
}
// static
double Timer::LocalTime()
{
#ifdef OMIM_OS_WINDOWS_NATIVE
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
uint64_t val = ft.dwHighDateTime;
val <<= 32;
val += ft.dwLowDateTime;
return val / 10000000.0;
#else
timeval tv;
::gettimeofday(&tv, 0);
return tv.tv_sec + tv.tv_usec / 1000000.0;
#endif
}
std::string FormatCurrentTime()
{
time_t t = time(NULL);
std::string s(ctime(&t));
replace(s.begin(), s.end(), ' ', '_');
ASSERT_GREATER(s.size(), 1, ());
s.resize(s.size() - 1);
return s;
}
uint32_t GenerateYYMMDD(int year, int month, int day)
{
uint32_t result = (year - 100) * 100;
result = (result + month + 1) * 100;
result = result + day;
return result;
}
uint64_t SecondsSinceEpoch()
{
return TimeTToSecondsSinceEpoch(::time(nullptr));
}
std::string TimestampToString(time_t time)
{
if (time == INVALID_TIME_STAMP)
return std::string("INVALID_TIME_STAMP");
tm * t = gmtime(&time);
char buf[21] = { 0 };
#ifdef OMIM_OS_WINDOWS
sprintf_s(buf, ARRAY_SIZE(buf), "%04d-%02d-%02dT%02d:%02d:%02dZ", t->tm_year + 1900,
t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
#else
::snprintf(buf, ARRAY_SIZE(buf), "%04d-%02d-%02dT%02d:%02d:%02dZ", t->tm_year + 1900,
t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
#endif
return buf;
}
std::string SecondsSinceEpochToString(uint64_t secondsSinceEpoch)
{
return TimestampToString(SecondsSinceEpochToTimeT(secondsSinceEpoch));
}
namespace
{
bool IsValid(tm const & t)
{
/// @todo Funny thing, but "00" month is accepted as valid in get_time function.
/// Seems like a bug in the std library.
return (t.tm_mday >= 1 && t.tm_mday <= 31 &&
t.tm_mon >= 0 && t.tm_mon <= 11);
}
}
time_t StringToTimestamp(std::string const & s)
{
// Return current time in the case of failure
time_t res = INVALID_TIME_STAMP;
if (s.size() == 20)
{
// Parse UTC format: 1970-01-01T00:00:00Z
tm t{};
std::istringstream ss(s);
ss >> base::get_time(&t, "%Y-%m-%dT%H:%M:%SZ");
if (!ss.fail() && IsValid(t))
res = base::TimeGM(t);
}
else if (s.size() == 25)
{
// Parse custom time zone offset format: 2012-12-03T00:38:34+03:30
tm t1{}, t2{};
char sign;
std::istringstream ss(s);
ss >> base::get_time(&t1, "%Y-%m-%dT%H:%M:%S") >> sign >> base::get_time(&t2, "%H:%M");
if (!ss.fail() && IsValid(t1))
{
time_t const tt = base::TimeGM(t1);
// Fix timezone offset
if (sign == '-')
res = tt + t2.tm_hour * 3600 + t2.tm_min * 60;
else if (sign == '+')
res = tt - t2.tm_hour * 3600 - t2.tm_min * 60;
}
}
return res;
}
HighResTimer::HighResTimer(bool start/* = true*/)
{
if (start)
Reset();
}
void HighResTimer::Reset()
{
m_start = std::chrono::high_resolution_clock::now();
}
uint64_t HighResTimer::ElapsedNano() const
{
return std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now() - m_start).count();
}
uint64_t HighResTimer::ElapsedMillis() const
{
return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now() - m_start).count();
}
double HighResTimer::ElapsedSeconds() const
{
return std::chrono::duration_cast<std::chrono::duration<double>>(std::chrono::high_resolution_clock::now() - m_start).count();
}
time_t SecondsSinceEpochToTimeT(uint64_t secondsSinceEpoch)
{
std::chrono::time_point<std::chrono::system_clock> const tpoint{std::chrono::seconds(secondsSinceEpoch)};
return std::chrono::system_clock::to_time_t(tpoint);
}
uint64_t TimeTToSecondsSinceEpoch(time_t time)
{
auto const tpoint = std::chrono::system_clock::from_time_t(time);
return std::chrono::duration_cast<std::chrono::seconds>(tpoint.time_since_epoch()).count();
}
}
|