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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #if defined( WNT )
21 : #include <windows.h>
22 : #elif defined UNX
23 : #include <unistd.h>
24 : #include <limits.h>
25 : #include <math.h>
26 : #include <sys/time.h>
27 : #endif
28 :
29 : #include <time.h>
30 : #ifdef __MACH__
31 : #include <mach/clock.h>
32 : #include <mach/mach.h>
33 : #endif
34 : #include <tools/time.hxx>
35 :
36 : #include <osl/diagnose.h>
37 :
38 : #if defined(SOLARIS) && defined(__GNUC__)
39 : extern long altzone;
40 : #endif
41 :
42 : namespace {
43 :
44 : const sal_Int64 secMask = SAL_CONST_INT64(1000000000);
45 : const sal_Int64 minMask = SAL_CONST_INT64(100000000000);
46 : const sal_Int64 hourMask = SAL_CONST_INT64(10000000000000);
47 :
48 : const sal_Int64 nanoSecInSec = 1000000000;
49 : const sal_Int16 secInMin = 60;
50 : const sal_Int16 minInHour = 60;
51 :
52 480 : sal_Int64 TimeToNanoSec( const Time& rTime )
53 : {
54 480 : short nSign = (rTime.GetTime() >= 0) ? +1 : -1;
55 480 : sal_Int32 nHour = rTime.GetHour();
56 480 : sal_Int32 nMin = rTime.GetMin();
57 480 : sal_Int32 nSec = rTime.GetSec();
58 480 : sal_Int32 nNanoSec = rTime.GetNanoSec();
59 :
60 480 : sal_Int64 nRet = nNanoSec;
61 480 : nRet += nSec * nanoSecInSec;
62 480 : nRet += nMin * secInMin * nanoSecInSec;
63 480 : nRet += nHour * minInHour * secInMin * nanoSecInSec;
64 :
65 480 : return (nRet * nSign);
66 : }
67 :
68 240 : Time NanoSecToTime( sal_Int64 nNanoSec )
69 : {
70 : short nSign;
71 240 : if ( nNanoSec < 0 )
72 : {
73 2 : nNanoSec *= -1;
74 2 : nSign = -1;
75 : }
76 : else
77 238 : nSign = 1;
78 :
79 240 : Time aTime( 0, 0, 0, nNanoSec );
80 240 : aTime.SetTime( aTime.GetTime() * nSign );
81 240 : return aTime;
82 : }
83 :
84 : } // anonymous namespace
85 :
86 5822 : Time::Time( TimeInitSystem )
87 : {
88 : #if defined( WNT )
89 : SYSTEMTIME aDateTime;
90 : GetLocalTime( &aDateTime );
91 :
92 : // construct time
93 : nTime = aDateTime.wHour * hourMask +
94 : aDateTime.wMinute * minMask +
95 : aDateTime.wSecond * secMask +
96 : aDateTime.wMilliseconds * 1000000;
97 : #else
98 : // determine time
99 : struct timespec tsTime;
100 : #if defined( __MACH__ )
101 : // OS X does not have clock_gettime, use clock_get_time
102 : clock_serv_t cclock;
103 : mach_timespec_t mts;
104 : host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
105 : clock_get_time(cclock, &mts);
106 : mach_port_deallocate(mach_task_self(), cclock);
107 : tsTime.tv_sec = mts.tv_sec;
108 : tsTime.tv_nsec = mts.tv_nsec;
109 : #else
110 : // CLOCK_REALTIME should be supported
111 : // on any modern Unix, but be extra cautious
112 5822 : if (clock_gettime(CLOCK_REALTIME, &tsTime) != 0)
113 : {
114 : struct timeval tvTime;
115 0 : OSL_VERIFY( gettimeofday(&tvTime, NULL) != 0 );
116 0 : tsTime.tv_sec = tvTime.tv_sec;
117 0 : tsTime.tv_nsec = tvTime.tv_usec * 1000;
118 : }
119 : #endif // __MACH__
120 :
121 : // construct time
122 : struct tm aTime;
123 5822 : time_t nTmpTime = tsTime.tv_sec;
124 5822 : if ( localtime_r( &nTmpTime, &aTime ) )
125 : {
126 11644 : nTime = aTime.tm_hour * hourMask +
127 11644 : aTime.tm_min * minMask +
128 11644 : aTime.tm_sec * secMask +
129 5822 : tsTime.tv_nsec;
130 : }
131 : else
132 0 : nTime = 0;
133 : #endif // WNT
134 5822 : }
135 :
136 5274 : Time::Time( const Time& rTime )
137 : {
138 5274 : nTime = rTime.nTime;
139 5274 : }
140 :
141 2286 : Time::Time( sal_uInt32 nHour, sal_uInt32 nMin, sal_uInt32 nSec, sal_uInt64 nNanoSec )
142 : {
143 : // normalize time
144 2286 : nSec += nNanoSec / nanoSecInSec;
145 2286 : nNanoSec %= nanoSecInSec;
146 2286 : nMin += nSec / secInMin;
147 2286 : nSec %= secInMin;
148 2286 : nHour += nMin / minInHour;
149 2286 : nMin %= minInHour;
150 :
151 : // construct time
152 : nTime = nNanoSec +
153 4572 : nSec * secMask +
154 4572 : nMin * minMask +
155 4572 : nHour * hourMask;
156 2286 : }
157 :
158 231 : void Time::SetHour( sal_uInt16 nNewHour )
159 : {
160 231 : short nSign = (nTime >= 0) ? +1 : -1;
161 231 : sal_Int32 nMin = GetMin();
162 231 : sal_Int32 nSec = GetSec();
163 231 : sal_Int32 nNanoSec = GetNanoSec();
164 :
165 462 : nTime = nSign *
166 462 : ( nNanoSec +
167 462 : nSec * secMask +
168 462 : nMin * minMask +
169 462 : nNewHour * hourMask );
170 231 : }
171 :
172 12 : void Time::SetMin( sal_uInt16 nNewMin )
173 : {
174 12 : short nSign = (nTime >= 0) ? +1 : -1;
175 12 : sal_Int32 nHour = GetHour();
176 12 : sal_Int32 nSec = GetSec();
177 12 : sal_Int32 nNanoSec = GetNanoSec();
178 :
179 : // no overflow
180 12 : nNewMin = nNewMin % minInHour;
181 :
182 24 : nTime = nSign *
183 24 : ( nNanoSec +
184 24 : nSec * secMask +
185 24 : nNewMin * minMask +
186 24 : nHour * hourMask );
187 12 : }
188 :
189 851 : void Time::SetSec( sal_uInt16 nNewSec )
190 : {
191 851 : short nSign = (nTime >= 0) ? +1 : -1;
192 851 : sal_Int32 nHour = GetHour();
193 851 : sal_Int32 nMin = GetMin();
194 851 : sal_Int32 nNanoSec = GetNanoSec();
195 :
196 : // no overflow
197 851 : nNewSec = nNewSec % secInMin;
198 :
199 1702 : nTime = nSign *
200 1702 : ( nNanoSec +
201 1702 : nNewSec * secMask +
202 1702 : nMin * minMask +
203 1702 : nHour * hourMask );
204 851 : }
205 :
206 839 : void Time::SetNanoSec( sal_uInt32 nNewNanoSec )
207 : {
208 839 : short nSign = (nTime >= 0) ? +1 : -1;
209 839 : sal_Int32 nHour = GetHour();
210 839 : sal_Int32 nMin = GetMin();
211 839 : sal_Int32 nSec = GetSec();
212 :
213 : // no overflow
214 839 : nNewNanoSec = nNewNanoSec % nanoSecInSec;
215 :
216 1678 : nTime = nSign *
217 1678 : ( nNewNanoSec +
218 1678 : nSec * secMask +
219 1678 : nMin * minMask +
220 1678 : nHour * hourMask );
221 839 : }
222 :
223 1122 : sal_Int64 Time::GetNSFromTime() const
224 : {
225 1122 : short nSign = (nTime >= 0) ? +1 : -1;
226 1122 : sal_Int32 nHour = GetHour();
227 1122 : sal_Int32 nMin = GetMin();
228 1122 : sal_Int32 nSec = GetSec();
229 1122 : sal_Int32 nNanoSec = GetNanoSec();
230 :
231 1122 : return nSign *
232 2244 : ( nNanoSec +
233 2244 : nSec * nanoSecInSec +
234 2244 : nMin * (secInMin * nanoSecInSec) +
235 2244 : nHour * (minInHour * secInMin * nanoSecInSec) );
236 : }
237 :
238 0 : void Time::MakeTimeFromNS( sal_Int64 nNS )
239 : {
240 : short nSign;
241 0 : if ( nNS < 0 )
242 : {
243 0 : nNS *= -1;
244 0 : nSign = -1;
245 : }
246 : else
247 0 : nSign = 1;
248 :
249 : // avoid overflow when sal_uIntPtr is 32 bits
250 0 : Time aTime( 0, 0, nNS/nanoSecInSec, nNS % nanoSecInSec );
251 0 : SetTime( aTime.GetTime() * nSign );
252 0 : }
253 :
254 0 : sal_Int32 Time::GetMSFromTime() const
255 : {
256 0 : short nSign = (nTime >= 0) ? +1 : -1;
257 0 : sal_Int32 nHour = GetHour();
258 0 : sal_Int32 nMin = GetMin();
259 0 : sal_Int32 nSec = GetSec();
260 0 : sal_Int32 nNanoSec = GetNanoSec();
261 :
262 0 : return nSign *
263 0 : ( nNanoSec/1000000 +
264 0 : nSec * 1000 +
265 0 : nMin * 60000 +
266 0 : nHour * 360000 );
267 : }
268 :
269 0 : void Time::MakeTimeFromMS( sal_Int32 nMS )
270 : {
271 : short nSign;
272 0 : if ( nMS < 0 )
273 : {
274 0 : nMS *= -1;
275 0 : nSign = -1;
276 : }
277 : else
278 0 : nSign = 1;
279 :
280 : // avoid overflow when sal_uIntPtr is 32 bits
281 0 : Time aTime( 0, 0, nMS/1000, (nMS % 1000) * 1000000 );
282 0 : SetTime( aTime.GetTime() * nSign );
283 0 : }
284 :
285 0 : double Time::GetTimeInDays() const
286 : {
287 0 : short nSign = (nTime >= 0) ? +1 : -1;
288 0 : double nHour = GetHour();
289 0 : double nMin = GetMin();
290 0 : double nSec = GetSec();
291 0 : double nNanoSec = GetNanoSec();
292 :
293 0 : return (nHour + (nMin / 60) + (nSec / (minInHour * secInMin)) + (nNanoSec / (minInHour * secInMin * nanoSecInSec))) / 24 * nSign;
294 : }
295 :
296 3196 : Time& Time::operator =( const Time& rTime )
297 : {
298 3196 : nTime = rTime.nTime;
299 3196 : return *this;
300 : }
301 :
302 205 : Time& Time::operator +=( const Time& rTime )
303 : {
304 205 : nTime = NanoSecToTime( TimeToNanoSec( *this ) +
305 205 : TimeToNanoSec( rTime ) ).GetTime();
306 205 : return *this;
307 : }
308 :
309 20 : Time& Time::operator -=( const Time& rTime )
310 : {
311 20 : nTime = NanoSecToTime( TimeToNanoSec( *this ) -
312 20 : TimeToNanoSec( rTime ) ).GetTime();
313 20 : return *this;
314 : }
315 :
316 0 : Time operator +( const Time& rTime1, const Time& rTime2 )
317 : {
318 0 : return NanoSecToTime( TimeToNanoSec( rTime1 ) +
319 0 : TimeToNanoSec( rTime2 ) );
320 : }
321 :
322 15 : Time operator -( const Time& rTime1, const Time& rTime2 )
323 : {
324 15 : return NanoSecToTime( TimeToNanoSec( rTime1 ) -
325 15 : TimeToNanoSec( rTime2 ) );
326 : }
327 :
328 0 : bool Time::IsEqualIgnoreNanoSec( const Time& rTime ) const
329 : {
330 0 : sal_Int32 n1 = (nTime < 0 ? -static_cast<sal_Int32>(GetNanoSec()) : GetNanoSec() );
331 0 : sal_Int32 n2 = (rTime.nTime < 0 ? -static_cast<sal_Int32>(rTime.GetNanoSec()) : rTime.GetNanoSec() );
332 0 : return (nTime - n1) == (rTime.nTime - n2);
333 : }
334 :
335 218 : Time Time::GetUTCOffset()
336 : {
337 : #if defined( WNT )
338 : TIME_ZONE_INFORMATION aTimeZone;
339 : aTimeZone.Bias = 0;
340 : DWORD nTimeZoneRet = GetTimeZoneInformation( &aTimeZone );
341 : sal_Int32 nTempTime = aTimeZone.Bias;
342 : if ( nTimeZoneRet == TIME_ZONE_ID_STANDARD )
343 : nTempTime += aTimeZone.StandardBias;
344 : else if ( nTimeZoneRet == TIME_ZONE_ID_DAYLIGHT )
345 : nTempTime += aTimeZone.DaylightBias;
346 : Time aTime( 0, (sal_uInt16)abs( nTempTime ) );
347 : if ( nTempTime > 0 )
348 : aTime = -aTime;
349 : return aTime;
350 : #else
351 : static sal_uIntPtr nCacheTicks = 0;
352 : static sal_Int32 nCacheSecOffset = -1;
353 218 : sal_uIntPtr nTicks = Time::GetSystemTicks();
354 : time_t nTime;
355 : tm aTM;
356 : sal_Int32 nLocalTime;
357 : sal_Int32 nUTC;
358 : short nTempTime;
359 :
360 : // determine value again if needed
361 426 : if ( (nCacheSecOffset == -1) ||
362 416 : ((nTicks - nCacheTicks) > 360000) ||
363 208 : ( nTicks < nCacheTicks ) // handle overflow
364 : )
365 : {
366 10 : nTime = time( 0 );
367 10 : localtime_r( &nTime, &aTM );
368 10 : nLocalTime = mktime( &aTM );
369 : #if defined( SOLARIS )
370 : // Solaris gmtime_r() seems not to handle daylight saving time
371 : // flags correctly
372 : nUTC = nLocalTime + ( aTM.tm_isdst == 0 ? timezone : altzone );
373 : #elif defined( LINUX )
374 : // Linux mktime() seems not to handle tm_isdst correctly
375 10 : nUTC = nLocalTime - aTM.tm_gmtoff;
376 : #else
377 : gmtime_r( &nTime, &aTM );
378 : nUTC = mktime( &aTM );
379 : #endif
380 10 : nCacheTicks = nTicks;
381 10 : nCacheSecOffset = (nLocalTime-nUTC) / 60;
382 : }
383 :
384 218 : nTempTime = abs( nCacheSecOffset );
385 218 : Time aTime( 0, (sal_uInt16)nTempTime );
386 218 : if ( nCacheSecOffset < 0 )
387 0 : aTime = -aTime;
388 218 : return aTime;
389 : #endif
390 : }
391 :
392 528438 : sal_uIntPtr Time::GetSystemTicks()
393 : {
394 : #if defined WNT
395 : return (sal_uIntPtr)GetTickCount();
396 : #else
397 : timeval tv;
398 528438 : gettimeofday (&tv, 0);
399 :
400 528438 : double fTicks = tv.tv_sec;
401 528438 : fTicks *= 1000;
402 528438 : fTicks += ((tv.tv_usec + 500) / 1000);
403 :
404 528438 : fTicks = fmod (fTicks, double(ULONG_MAX));
405 528438 : return sal_uIntPtr(fTicks);
406 : #endif
407 : }
408 :
409 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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