1 /* xbt_os_time.c -- portable interface to time-related functions */
3 /* Copyright (c) 2007-2010, 2012-2014. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "xbt/sysdep.h"
10 #include "xbt/xbt_os_time.h" /* this module */
13 #include <math.h> /* floor */
16 #include <sys/timeb.h>
20 //Freebsd doesn't provide this clock_gettime flag yet, because it was added too recently (after 1993)
22 #define CLOCK_PROCESS_CPUTIME_ID CLOCK_PROF
25 double xbt_os_time(void)
27 #ifdef HAVE_GETTIMEOFDAY
29 gettimeofday(&tv, NULL);
30 #elif defined(_XBT_WIN32)
32 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
38 tv.tv_usec = tm.millitm * 1000;
44 GetSystemTimeAsFileTime(&ft);
45 tm = (unsigned __int64) ft.dwHighDateTime << 32;
46 tm |= ft.dwLowDateTime;
48 tm -= 11644473600000000ULL;
50 tv.tv_sec = (long) (tm / 1000000L);
51 tv.tv_usec = (long) (tm % 1000000L);
52 # endif /* windows version checker */
54 #else /* not windows, no gettimeofday => poor resolution */
55 return (double) (time(NULL));
56 #endif /* HAVE_GETTIMEOFDAY? */
58 return (double) (tv.tv_sec + tv.tv_usec / 1000000.0);
61 void xbt_os_sleep(double sec)
65 Sleep((floor(sec) * 1000) + ((sec - floor(sec)) * 1000));
70 ts.tv_nsec = (sec - floor(sec)) * 1e9;
71 nanosleep (&ts, NULL);
72 #else /* don't have nanosleep. Use select to sleep less than one second */
73 struct timeval timeout;
75 timeout.tv_sec = (unsigned long) (sec);
76 timeout.tv_usec = (sec - floor(sec)) * 1000000;
78 select(0, NULL, NULL, NULL, &timeout);
82 /* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus
83 disabled in SDL source code */
86 /* \defgroup XBT_sysdep All system dependency
87 * \brief This section describes many macros/functions that can serve as
92 struct s_xbt_os_timer {
93 #ifdef HAVE_POSIX_GETTIME
94 struct timespec start, stop, elapse;
95 #elif defined(HAVE_GETTIMEOFDAY) || defined(_XBT_WIN32)
96 struct timeval start, stop, elapse;
98 unsigned long int start, stop, elapse;
102 size_t xbt_os_timer_size(void){
103 return sizeof(struct s_xbt_os_timer);
106 xbt_os_timer_t xbt_os_timer_new(void)
108 return xbt_new0(struct s_xbt_os_timer, 1);
111 void xbt_os_timer_free(xbt_os_timer_t timer)
116 double xbt_os_timer_elapsed(xbt_os_timer_t timer)
118 #ifdef HAVE_POSIX_GETTIME
119 return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) +
120 ((double) timer->elapse.tv_sec ) +
121 ((((double) timer->stop.tv_nsec) -
122 ((double) timer->start.tv_nsec) + ((double) timer->elapse.tv_nsec )) / 1e9);
123 #elif defined(HAVE_GETTIMEOFDAY) || defined(_XBT_WIN32)
124 return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec)
125 + ((double) timer->elapse.tv_sec ) +
126 ((((double) timer->stop.tv_usec) -
127 ((double) timer->start.tv_usec) + ((double) timer->elapse.tv_usec )) / 1000000.0);
129 return (double) timer->stop - (double) timer->start + (double)
134 void xbt_os_walltimer_start(xbt_os_timer_t timer)
136 #ifdef HAVE_POSIX_GETTIME
137 timer->elapse.tv_sec = 0;
138 timer->elapse.tv_nsec = 0;
139 clock_gettime(CLOCK_REALTIME, &(timer->start));
140 #elif defined(HAVE_GETTIMEOFDAY)
141 timer->elapse.tv_sec = 0;
142 timer->elapse.tv_usec = 0;
143 gettimeofday(&(timer->start), NULL);
144 #elif defined(_XBT_WIN32)
145 timer->elapse.tv_sec = 0;
146 timer->elapse.tv_usec = 0;
147 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
152 timer->start.tv_sec = tm.time;
153 timer->start.tv_usec = tm.millitm * 1000;
159 GetSystemTimeAsFileTime(&ft);
160 tm = (unsigned __int64) ft.dwHighDateTime << 32;
161 tm |= ft.dwLowDateTime;
163 tm -= 11644473600000000ULL;
165 timer->start.tv_sec = (long) (tm / 1000000L);
166 timer->start.tv_usec = (long) (tm % 1000000L);
167 # endif /* windows version checker */
170 timer->start = (unsigned long int) (time(NULL));
174 void xbt_os_walltimer_resume(xbt_os_timer_t timer)
176 #ifdef HAVE_POSIX_GETTIME
177 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
179 timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
180 clock_gettime(CLOCK_REALTIME, &(timer->start));
181 #elif defined(HAVE_GETTIMEOFDAY)
182 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
183 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
184 gettimeofday(&(timer->start), NULL);
185 #elif defined(_XBT_WIN32)
186 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
187 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
188 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
193 timer->start.tv_sec = tm.time;
194 timer->start.tv_usec = tm.millitm * 1000;
200 GetSystemTimeAsFileTime(&ft);
201 tm = (unsigned __int64) ft.dwHighDateTime << 32;
202 tm |= ft.dwLowDateTime;
204 tm -= 11644473600000000ULL;
206 timer->start.tv_sec = (long) (tm / 1000000L);
207 timer->start.tv_usec = (long) (tm % 1000000L);
210 timer->elapse = timer->stop - timer->start;
211 timer->start = (unsigned long int) (time(NULL));
215 void xbt_os_walltimer_stop(xbt_os_timer_t timer)
217 #ifdef HAVE_POSIX_GETTIME
218 clock_gettime(CLOCK_REALTIME, &(timer->stop));
219 #elif defined(HAVE_GETTIMEOFDAY)
220 gettimeofday(&(timer->stop), NULL);
221 #elif defined(_XBT_WIN32)
222 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
227 timer->stop.tv_sec = tm.time;
228 timer->stop.tv_usec = tm.millitm * 1000;
234 GetSystemTimeAsFileTime(&ft);
235 tm = (unsigned __int64) ft.dwHighDateTime << 32;
236 tm |= ft.dwLowDateTime;
238 tm -= 11644473600000000ULL;
240 timer->stop.tv_sec = (long) (tm / 1000000L);
241 timer->stop.tv_usec = (long) (tm % 1000000L);
244 timer->stop = (unsigned long int) (time(NULL));
248 void xbt_os_cputimer_start(xbt_os_timer_t timer)
250 #ifdef HAVE_POSIX_GETTIME
251 timer->elapse.tv_sec = 0;
252 timer->elapse.tv_nsec = 0;
253 clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
254 #elif defined(HAVE_GETTIMEOFDAY)//return time and not cputime in this case
255 timer->elapse.tv_sec = 0;
256 timer->elapse.tv_usec = 0;
257 gettimeofday(&(timer->start), NULL);
258 #elif defined(_XBT_WIN32)
259 timer->elapse.tv_sec = 0;
260 timer->elapse.tv_usec = 0;
261 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
264 HANDLE h = GetCurrentProcess();
265 FILETIME creationTime, exitTime, kernelTime, userTime;
266 GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
267 unsigned __int64 ktm, utm;
268 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
269 ktm |= kernelTime.dwLowDateTime;
271 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
272 utm |= userTime.dwLowDateTime;
274 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
275 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
276 # endif /* windows version checker */
280 void xbt_os_cputimer_resume(xbt_os_timer_t timer)
282 #ifdef HAVE_POSIX_GETTIME
283 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
284 timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
285 clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
286 #elif defined(HAVE_GETTIMEOFDAY)
287 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
288 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
289 gettimeofday(&(timer->start), NULL);
290 #elif defined(_XBT_WIN32)
291 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
292 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
293 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
296 HANDLE h = GetCurrentProcess();
297 FILETIME creationTime, exitTime, kernelTime, userTime;
298 GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
299 unsigned __int64 ktm, utm;
300 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
301 ktm |= kernelTime.dwLowDateTime;
303 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
304 utm |= userTime.dwLowDateTime;
306 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
307 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
308 # endif /* windows version checker */
313 void xbt_os_cputimer_stop(xbt_os_timer_t timer)
315 #ifdef HAVE_POSIX_GETTIME
316 clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->stop));
317 #elif defined(HAVE_GETTIMEOFDAY)
318 gettimeofday(&(timer->stop), NULL);
319 #elif defined(_XBT_WIN32)
320 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
323 HANDLE h = GetCurrentProcess();
324 FILETIME creationTime, exitTime, kernelTime, userTime;
325 GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
326 unsigned __int64 ktm, utm;
327 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
328 ktm |= kernelTime.dwLowDateTime;
330 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
331 utm |= userTime.dwLowDateTime;
333 timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
334 timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
335 # endif /* windows version checker */
339 void xbt_os_threadtimer_start(xbt_os_timer_t timer)
341 #ifdef HAVE_POSIX_GETTIME
342 timer->elapse.tv_sec = 0;
343 timer->elapse.tv_nsec = 0;
344 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
345 #elif defined(HAVE_GETTIMEOFDAY)//return time and not cputime in this case
346 timer->elapse.tv_sec = 0;
347 timer->elapse.tv_usec = 0;
348 gettimeofday(&(timer->start), NULL);
349 #elif defined(_XBT_WIN32)
351 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
354 HANDLE h = GetCurrentThread();
355 FILETIME creationTime, exitTime, kernelTime, userTime;
356 GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
357 unsigned __int64 ktm, utm;
358 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
359 ktm |= kernelTime.dwLowDateTime;
361 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
362 utm |= userTime.dwLowDateTime;
364 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
365 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
366 # endif /* windows version checker */
370 void xbt_os_threadtimer_resume(xbt_os_timer_t timer)
372 #ifdef HAVE_POSIX_GETTIME
373 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
374 timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
375 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
376 #elif defined(HAVE_GETTIMEOFDAY)
377 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
378 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
379 gettimeofday(&(timer->start), NULL);
380 #elif defined(_XBT_WIN32)
381 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
382 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
383 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
386 HANDLE h = GetCurrentThread();
387 FILETIME creationTime, exitTime, kernelTime, userTime;
388 GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
389 unsigned __int64 ktm, utm;
390 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
391 ktm |= kernelTime.dwLowDateTime;
393 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
394 utm |= userTime.dwLowDateTime;
396 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
397 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
398 # endif /* windows version checker */
402 void xbt_os_threadtimer_stop(xbt_os_timer_t timer)
404 #ifdef HAVE_POSIX_GETTIME
405 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->stop));
406 #elif defined(HAVE_GETTIMEOFDAY)//if nothing else is available, return just time
407 gettimeofday(&(timer->stop), NULL);
408 #elif defined(_XBT_WIN32)
409 # if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
412 HANDLE h = GetCurrentThread();
413 FILETIME creationTime, exitTime, kernelTime, userTime;
414 GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
415 unsigned __int64 ktm, utm;
416 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
417 ktm |= kernelTime.dwLowDateTime;
419 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
420 utm |= userTime.dwLowDateTime;
422 timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
423 timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
424 # endif /* windows version checker */