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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
|
//
// Timestamp.cpp
//
// Library: Foundation
// Package: DateTime
// Module: Timestamp
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Timestamp.h"
#include "Poco/Timespan.h"
#include "Poco/Exception.h"
#include <algorithm>
#undef min
#undef max
#include <limits>
#if defined(POCO_OS_FAMILY_UNIX)
#include <time.h>
#include <unistd.h>
#if defined(POCO_VXWORKS)
#error #include <timers.h>
#else
#include <sys/time.h>
#include <sys/times.h>
#endif
#elif defined(POCO_OS_FAMILY_WINDOWS)
#include "Poco/UnWindows.h"
#if defined(_WIN32_WCE)
#include <cmath>
#endif
#endif
#ifndef POCO_HAVE_CLOCK_GETTIME
#if (defined(_POSIX_TIMERS) && defined(CLOCK_REALTIME)) || defined(POCO_VXWORKS) || defined(__QNX__)
#ifndef __APPLE__ // See GitHub issue #1453 - not available before Mac OS 10.12/iOS 10
#define POCO_HAVE_CLOCK_GETTIME
#endif
#endif
#endif
#if defined(_WIN32_WCE) && defined(POCO_WINCE_TIMESTAMP_HACK)
//
// See <http://community.opennetcf.com/articles/cf/archive/2007/11/20/getting-a-millisecond-resolution-datetime-under-windows-ce.aspx>
// for an explanation of the following code.
//
// In short: Windows CE system time in most cases only has a resolution of one second.
// But we want millisecond resolution.
//
namespace {
class TickOffset
{
public:
TickOffset()
{
SYSTEMTIME st1, st2;
std::memset(&st1, 0, sizeof(SYSTEMTIME));
std::memset(&st2, 0, sizeof(SYSTEMTIME));
GetSystemTime(&st1);
while (true)
{
GetSystemTime(&st2);
// wait for a rollover
if (st1.wSecond != st2.wSecond)
{
_offset = GetTickCount() % 1000;
break;
}
}
}
void calibrate(int seconds)
{
SYSTEMTIME st1, st2;
systemTime(&st1);
WORD s = st1.wSecond;
int sum = 0;
int remaining = seconds;
while (remaining > 0)
{
systemTime(&st2);
WORD s2 = st2.wSecond;
if (s != s2)
{
remaining--;
// store the offset from zero
sum += (st2.wMilliseconds > 500) ? (st2.wMilliseconds - 1000) : st2.wMilliseconds;
s = st2.wSecond;
}
}
// adjust the offset by the average deviation from zero (round to the integer farthest from zero)
if (sum < 0)
_offset += (int) std::floor(sum / (float)seconds);
else
_offset += (int) std::ceil(sum / (float)seconds);
}
void systemTime(SYSTEMTIME* pST)
{
std::memset(pST, 0, sizeof(SYSTEMTIME));
WORD tick = GetTickCount() % 1000;
GetSystemTime(pST);
WORD ms = (tick >= _offset) ? (tick - _offset) : (1000 - (_offset - tick));
pST->wMilliseconds = ms;
}
void systemTimeAsFileTime(FILETIME* pFT)
{
SYSTEMTIME st;
systemTime(&st);
SystemTimeToFileTime(&st, pFT);
}
private:
WORD _offset;
};
static TickOffset offset;
void GetSystemTimeAsFileTimeWithMillisecondResolution(FILETIME* pFT)
{
offset.systemTimeAsFileTime(pFT);
}
} // namespace
#endif // defined(_WIN32_WCE) && defined(POCO_WINCE_TIMESTAMP_HACK)
namespace Poco {
const Timestamp::TimeVal Timestamp::TIMEVAL_MIN = std::numeric_limits<Timestamp::TimeVal>::min();
const Timestamp::TimeVal Timestamp::TIMEVAL_MAX = std::numeric_limits<Timestamp::TimeVal>::max();
Timestamp::Timestamp()
{
update();
}
Timestamp::Timestamp(TimeVal tv)
{
_ts = tv;
}
Timestamp::Timestamp(const Timestamp& other)
{
_ts = other._ts;
}
Timestamp::~Timestamp()
{
}
Timestamp& Timestamp::operator = (const Timestamp& other)
{
_ts = other._ts;
return *this;
}
Timestamp& Timestamp::operator = (TimeVal tv)
{
_ts = tv;
return *this;
}
void Timestamp::swap(Timestamp& timestamp)
{
std::swap(_ts, timestamp._ts);
}
Timestamp Timestamp::fromEpochTime(std::time_t t)
{
return Timestamp(TimeVal(t)*resolution());
}
Timestamp Timestamp::fromUtcTime(UtcTimeVal val)
{
val -= (TimeDiff(0x01b21dd2) << 32) + 0x13814000;
val /= 10;
return Timestamp(val);
}
void Timestamp::update()
{
#if defined(POCO_OS_FAMILY_WINDOWS)
FILETIME ft;
#if defined(_WIN32_WCE) && defined(POCO_WINCE_TIMESTAMP_HACK)
GetSystemTimeAsFileTimeWithMillisecondResolution(&ft);
#else
GetSystemTimeAsFileTime(&ft);
#endif
ULARGE_INTEGER epoch; // UNIX epoch (1970-01-01 00:00:00) expressed in Windows NT FILETIME
epoch.LowPart = 0xD53E8000;
epoch.HighPart = 0x019DB1DE;
ULARGE_INTEGER ts;
ts.LowPart = ft.dwLowDateTime;
ts.HighPart = ft.dwHighDateTime;
ts.QuadPart -= epoch.QuadPart;
_ts = ts.QuadPart/10;
#elif defined(POCO_HAVE_CLOCK_GETTIME)
struct timespec ts;
if (clock_gettime(CLOCK_REALTIME, &ts))
throw SystemException("cannot get time of day");
_ts = TimeVal(ts.tv_sec)*resolution() + ts.tv_nsec/1000;
#else
struct timeval tv;
if (gettimeofday(&tv, NULL))
throw SystemException("cannot get time of day");
_ts = TimeVal(tv.tv_sec)*resolution() + tv.tv_usec;
#endif
}
Timestamp Timestamp::operator + (const Timespan& span) const
{
return *this + span.totalMicroseconds();
}
Timestamp Timestamp::operator - (const Timespan& span) const
{
return *this - span.totalMicroseconds();
}
Timestamp& Timestamp::operator += (const Timespan& span)
{
return *this += span.totalMicroseconds();
}
Timestamp& Timestamp::operator -= (const Timespan& span)
{
return *this -= span.totalMicroseconds();
}
#if defined(_WIN32)
Timestamp Timestamp::fromFileTimeNP(UInt32 fileTimeLow, UInt32 fileTimeHigh)
{
ULARGE_INTEGER epoch; // UNIX epoch (1970-01-01 00:00:00) expressed in Windows NT FILETIME
epoch.LowPart = 0xD53E8000;
epoch.HighPart = 0x019DB1DE;
ULARGE_INTEGER ts;
ts.LowPart = fileTimeLow;
ts.HighPart = fileTimeHigh;
ts.QuadPart -= epoch.QuadPart;
return Timestamp(ts.QuadPart/10);
}
void Timestamp::toFileTimeNP(UInt32& fileTimeLow, UInt32& fileTimeHigh) const
{
ULARGE_INTEGER epoch; // UNIX epoch (1970-01-01 00:00:00) expressed in Windows NT FILETIME
epoch.LowPart = 0xD53E8000;
epoch.HighPart = 0x019DB1DE;
ULARGE_INTEGER ts;
ts.QuadPart = _ts*10;
ts.QuadPart += epoch.QuadPart;
fileTimeLow = ts.LowPart;
fileTimeHigh = ts.HighPart;
}
#endif
} // namespace Poco
|
