1 /* xbt_os_time.c -- portable interface to time-related functions */
3 /* Copyright (c) 2007-2016. The SimGrid Team. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "src/internal_config.h"
9 #include "xbt/sysdep.h"
11 #include "xbt/xbt_os_time.h" /* this module */
12 #include <math.h> /* floor */
17 #include <sys/timeb.h>
21 //Freebsd doesn't provide this clock_gettime flag yet, because it was added too recently (after 1993)
22 #if defined (CLOCK_PROF) && ! defined (CLOCK_PROCESS_CPUTIME_ID)
23 #define CLOCK_PROCESS_CPUTIME_ID CLOCK_PROF
26 #if defined(__APPLE__) && defined(__MACH__)
27 #include <sys/types.h>
28 #include <sys/sysctl.h>
29 #include <mach/mach_init.h>
30 #include <mach/mach_host.h>
31 #include <mach/mach_port.h>
32 #include <mach/mach_traps.h>
33 #include <mach/task_info.h>
34 #include <mach/thread_info.h>
35 #include <mach/thread_act.h>
36 #include <mach/vm_region.h>
37 #include <mach/vm_map.h>
38 #include <mach/task.h>
41 double xbt_os_time(void)
45 gettimeofday(&tv, NULL);
51 GetSystemTimeAsFileTime(&ft);
52 tm = (unsigned __int64) ft.dwHighDateTime << 32;
53 tm |= ft.dwLowDateTime;
55 tm -= 11644473600000000ULL;
57 tv.tv_sec = (long) (tm / 1000000L);
58 tv.tv_usec = (long) (tm % 1000000L);
60 #else /* not windows, no gettimeofday => poor resolution */
61 return (double) (time(NULL));
62 #endif /* HAVE_GETTIMEOFDAY? */
64 return (double) (tv.tv_sec + tv.tv_usec / 1000000.0);
67 void xbt_os_sleep(double sec)
71 Sleep((floor(sec) * 1000) + ((sec - floor(sec)) * 1000));
76 ts.tv_nsec = (sec - floor(sec)) * 1e9;
77 nanosleep (&ts, NULL);
78 #else /* don't have nanosleep. Use select to sleep less than one second */
79 struct timeval timeout;
81 timeout.tv_sec = (unsigned long) (sec);
82 timeout.tv_usec = (sec - floor(sec)) * 1000000;
84 select(0, NULL, NULL, NULL, &timeout);
88 /* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus
89 disabled in SDL source code */
92 /* \defgroup XBT_sysdep All system dependency
93 * \brief This section describes many macros/functions that can serve as
98 struct s_xbt_os_timer {
99 #if HAVE_POSIX_GETTIME
100 struct timespec start, stop, elapse;
101 #elif HAVE_GETTIMEOFDAY || defined(_WIN32)
102 struct timeval start, stop, elapse;
104 unsigned long int start, stop, elapse;
108 size_t xbt_os_timer_size(void){
109 return sizeof(struct s_xbt_os_timer);
112 xbt_os_timer_t xbt_os_timer_new(void)
114 return xbt_new0(struct s_xbt_os_timer, 1);
117 void xbt_os_timer_free(xbt_os_timer_t timer)
122 double xbt_os_timer_elapsed(xbt_os_timer_t timer)
124 #if HAVE_POSIX_GETTIME
125 return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) +
126 ((double) timer->elapse.tv_sec ) +
127 ((((double) timer->stop.tv_nsec) -
128 ((double) timer->start.tv_nsec) + ((double) timer->elapse.tv_nsec )) / 1e9);
129 #elif HAVE_GETTIMEOFDAY || defined(_WIN32)
130 return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec)
131 + ((double) timer->elapse.tv_sec ) +
132 ((((double) timer->stop.tv_usec) -
133 ((double) timer->start.tv_usec) + ((double) timer->elapse.tv_usec )) / 1000000.0);
135 return (double) timer->stop - (double) timer->start + (double)
140 void xbt_os_walltimer_start(xbt_os_timer_t timer)
142 #if HAVE_POSIX_GETTIME
143 timer->elapse.tv_sec = 0;
144 timer->elapse.tv_nsec = 0;
145 clock_gettime(CLOCK_REALTIME, &(timer->start));
146 #elif HAVE_GETTIMEOFDAY
147 timer->elapse.tv_sec = 0;
148 timer->elapse.tv_usec = 0;
149 gettimeofday(&(timer->start), NULL);
150 #elif defined(_WIN32)
151 timer->elapse.tv_sec = 0;
152 timer->elapse.tv_usec = 0;
156 GetSystemTimeAsFileTime(&ft);
157 tm = (unsigned __int64) ft.dwHighDateTime << 32;
158 tm |= ft.dwLowDateTime;
160 tm -= 11644473600000000ULL;
162 timer->start.tv_sec = (long) (tm / 1000000L);
163 timer->start.tv_usec = (long) (tm % 1000000L);
166 timer->start = (unsigned long int) (time(NULL));
170 void xbt_os_walltimer_resume(xbt_os_timer_t timer)
172 #if HAVE_POSIX_GETTIME
173 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
175 timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
176 clock_gettime(CLOCK_REALTIME, &(timer->start));
177 #elif HAVE_GETTIMEOFDAY
178 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
179 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
180 gettimeofday(&(timer->start), NULL);
181 #elif defined(_WIN32)
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;
187 GetSystemTimeAsFileTime(&ft);
188 tm = (unsigned __int64) ft.dwHighDateTime << 32;
189 tm |= ft.dwLowDateTime;
191 tm -= 11644473600000000ULL;
193 timer->start.tv_sec = (long) (tm / 1000000L);
194 timer->start.tv_usec = (long) (tm % 1000000L);
196 timer->elapse = timer->stop - timer->start;
197 timer->start = (unsigned long int) (time(NULL));
201 void xbt_os_walltimer_stop(xbt_os_timer_t timer)
203 #if HAVE_POSIX_GETTIME
204 clock_gettime(CLOCK_REALTIME, &(timer->stop));
205 #elif HAVE_GETTIMEOFDAY
206 gettimeofday(&(timer->stop), NULL);
207 #elif defined(_WIN32)
211 GetSystemTimeAsFileTime(&ft);
212 tm = (unsigned __int64) ft.dwHighDateTime << 32;
213 tm |= ft.dwLowDateTime;
215 tm -= 11644473600000000ULL;
217 timer->stop.tv_sec = (long) (tm / 1000000L);
218 timer->stop.tv_usec = (long) (tm % 1000000L);
220 timer->stop = (unsigned long int) (time(NULL));
224 void xbt_os_cputimer_start(xbt_os_timer_t timer)
226 #if HAVE_POSIX_GETTIME
227 timer->elapse.tv_sec = 0;
228 timer->elapse.tv_nsec = 0;
229 clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
230 #elif HAVE_GETTIMEOFDAY //return time and not cputime in this case
231 timer->elapse.tv_sec = 0;
232 timer->elapse.tv_usec = 0;
233 gettimeofday(&(timer->start), NULL);
234 #elif defined(_WIN32)
235 timer->elapse.tv_sec = 0;
236 timer->elapse.tv_usec = 0;
237 HANDLE h = GetCurrentProcess();
238 FILETIME creationTime, exitTime, kernelTime, userTime;
239 GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
240 unsigned __int64 ktm, utm;
241 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
242 ktm |= kernelTime.dwLowDateTime;
244 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
245 utm |= userTime.dwLowDateTime;
247 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
248 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
252 void xbt_os_cputimer_resume(xbt_os_timer_t timer)
254 #if HAVE_POSIX_GETTIME
255 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
256 timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
257 clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
258 #elif HAVE_GETTIMEOFDAY
259 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
260 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
261 gettimeofday(&(timer->start), NULL);
262 #elif defined(_WIN32)
263 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
264 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
265 HANDLE h = GetCurrentProcess();
266 FILETIME creationTime, exitTime, kernelTime, userTime;
267 GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
268 unsigned __int64 ktm, utm;
269 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
270 ktm |= kernelTime.dwLowDateTime;
272 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
273 utm |= userTime.dwLowDateTime;
275 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
276 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
280 void xbt_os_cputimer_stop(xbt_os_timer_t timer)
282 #if HAVE_POSIX_GETTIME
283 clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->stop));
284 #elif HAVE_GETTIMEOFDAY
285 gettimeofday(&(timer->stop), NULL);
286 #elif defined(_WIN32)
287 HANDLE h = GetCurrentProcess();
288 FILETIME creationTime, exitTime, kernelTime, userTime;
289 GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
290 unsigned __int64 ktm, utm;
291 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
292 ktm |= kernelTime.dwLowDateTime;
294 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
295 utm |= userTime.dwLowDateTime;
297 timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
298 timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
302 void xbt_os_threadtimer_start(xbt_os_timer_t timer)
304 #if HAVE_POSIX_GETTIME
305 timer->elapse.tv_sec = 0;
306 timer->elapse.tv_nsec = 0;
307 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
308 #elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
309 timer->elapse.tv_sec = 0;
310 timer->elapse.tv_usec = 0;
311 mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
312 thread_basic_info_data_t thi_data;
313 thread_basic_info_t thi = &thi_data;
314 thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
315 timer->start.tv_usec = thi->system_time.microseconds + thi->user_time.microseconds;
316 timer->start.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
317 #elif HAVE_GETTIMEOFDAY //return time and not cputime in this case
318 timer->elapse.tv_sec = 0;
319 timer->elapse.tv_usec = 0;
320 gettimeofday(&(timer->start), NULL);
321 #elif defined(_WIN32)
322 HANDLE h = GetCurrentThread();
323 FILETIME creationTime, exitTime, kernelTime, userTime;
324 GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
325 unsigned __int64 ktm, utm;
326 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
327 ktm |= kernelTime.dwLowDateTime;
329 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
330 utm |= userTime.dwLowDateTime;
332 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
333 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
337 void xbt_os_threadtimer_resume(xbt_os_timer_t timer)
339 #if HAVE_POSIX_GETTIME
340 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
341 timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
342 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
343 #elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
344 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
345 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
346 mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
347 thread_basic_info_data_t thi_data;
348 thread_basic_info_t thi = &thi_data;
349 thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
350 timer->start.tv_usec = thi->system_time.microseconds + thi->user_time.microseconds;
351 timer->start.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
352 #elif HAVE_GETTIMEOFDAY
353 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
354 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
355 gettimeofday(&(timer->start), NULL);
356 #elif defined(_WIN32)
357 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
358 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
359 HANDLE h = GetCurrentThread();
360 FILETIME creationTime, exitTime, kernelTime, userTime;
361 GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
362 unsigned __int64 ktm, utm;
363 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
364 ktm |= kernelTime.dwLowDateTime;
366 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
367 utm |= userTime.dwLowDateTime;
369 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
370 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
374 void xbt_os_threadtimer_stop(xbt_os_timer_t timer)
376 #if HAVE_POSIX_GETTIME
377 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->stop));
378 #elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
379 mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
380 thread_basic_info_data_t thi_data;
381 thread_basic_info_t thi = &thi_data;
382 thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
383 timer->stop.tv_usec = thi->system_time.microseconds + thi->user_time.microseconds;
384 timer->stop.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
385 #elif HAVE_GETTIMEOFDAY //if nothing else is available, return just time
386 gettimeofday(&(timer->stop), NULL);
387 #elif defined(_WIN32)
388 HANDLE h = GetCurrentThread();
389 FILETIME creationTime, exitTime, kernelTime, userTime;
390 GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
391 unsigned __int64 ktm, utm;
392 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
393 ktm |= kernelTime.dwLowDateTime;
395 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
396 utm |= userTime.dwLowDateTime;
398 timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
399 timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);