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 disabled in SDL source code */
90 /* \defgroup XBT_sysdep All system dependency
91 * \brief This section describes many macros/functions that can serve as an OS abstraction.
93 struct s_xbt_os_timer {
94 #if HAVE_POSIX_GETTIME
95 struct timespec start, stop, elapse;
96 #elif HAVE_GETTIMEOFDAY || defined(_WIN32)
97 struct timeval start, stop, elapse;
99 unsigned long int start, stop, elapse;
103 size_t xbt_os_timer_size(void){
104 return sizeof(struct s_xbt_os_timer);
107 xbt_os_timer_t xbt_os_timer_new(void)
109 return xbt_new0(struct s_xbt_os_timer, 1);
112 void xbt_os_timer_free(xbt_os_timer_t timer)
117 double xbt_os_timer_elapsed(xbt_os_timer_t timer)
119 #if HAVE_POSIX_GETTIME
120 return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) + ((double) timer->elapse.tv_sec ) +
121 ((((double) timer->stop.tv_nsec) - ((double) timer->start.tv_nsec) + ((double) timer->elapse.tv_nsec )) / 1e9);
122 #elif HAVE_GETTIMEOFDAY || defined(_WIN32)
123 return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) + ((double) timer->elapse.tv_sec ) +
124 ((((double) timer->stop.tv_usec) - ((double) timer->start.tv_usec) + ((double) timer->elapse.tv_usec )) /
127 return (double) timer->stop - (double) timer->start + (double) timer->elapse;
131 void xbt_os_walltimer_start(xbt_os_timer_t timer)
133 #if HAVE_POSIX_GETTIME
134 timer->elapse.tv_sec = 0;
135 timer->elapse.tv_nsec = 0;
136 clock_gettime(CLOCK_REALTIME, &(timer->start));
137 #elif HAVE_GETTIMEOFDAY
138 timer->elapse.tv_sec = 0;
139 timer->elapse.tv_usec = 0;
140 gettimeofday(&(timer->start), NULL);
141 #elif defined(_WIN32)
142 timer->elapse.tv_sec = 0;
143 timer->elapse.tv_usec = 0;
147 GetSystemTimeAsFileTime(&ft);
148 tm = (unsigned __int64) ft.dwHighDateTime << 32;
149 tm |= ft.dwLowDateTime;
151 tm -= 11644473600000000ULL;
153 timer->start.tv_sec = (long) (tm / 1000000L);
154 timer->start.tv_usec = (long) (tm % 1000000L);
157 timer->start = (unsigned long int) (time(NULL));
161 void xbt_os_walltimer_resume(xbt_os_timer_t timer)
163 #if HAVE_POSIX_GETTIME
164 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
166 timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
167 clock_gettime(CLOCK_REALTIME, &(timer->start));
168 #elif HAVE_GETTIMEOFDAY
169 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
170 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
171 gettimeofday(&(timer->start), NULL);
172 #elif defined(_WIN32)
173 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
174 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
178 GetSystemTimeAsFileTime(&ft);
179 tm = (unsigned __int64) ft.dwHighDateTime << 32;
180 tm |= ft.dwLowDateTime;
182 tm -= 11644473600000000ULL;
184 timer->start.tv_sec = (long) (tm / 1000000L);
185 timer->start.tv_usec = (long) (tm % 1000000L);
187 timer->elapse = timer->stop - timer->start;
188 timer->start = (unsigned long int) (time(NULL));
192 void xbt_os_walltimer_stop(xbt_os_timer_t timer)
194 #if HAVE_POSIX_GETTIME
195 clock_gettime(CLOCK_REALTIME, &(timer->stop));
196 #elif HAVE_GETTIMEOFDAY
197 gettimeofday(&(timer->stop), NULL);
198 #elif defined(_WIN32)
202 GetSystemTimeAsFileTime(&ft);
203 tm = (unsigned __int64) ft.dwHighDateTime << 32;
204 tm |= ft.dwLowDateTime;
206 tm -= 11644473600000000ULL;
208 timer->stop.tv_sec = (long) (tm / 1000000L);
209 timer->stop.tv_usec = (long) (tm % 1000000L);
211 timer->stop = (unsigned long int) (time(NULL));
215 void xbt_os_cputimer_start(xbt_os_timer_t timer)
217 #if HAVE_POSIX_GETTIME
218 timer->elapse.tv_sec = 0;
219 timer->elapse.tv_nsec = 0;
220 clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
221 #elif HAVE_GETTIMEOFDAY //return time and not cputime in this case
222 timer->elapse.tv_sec = 0;
223 timer->elapse.tv_usec = 0;
224 gettimeofday(&(timer->start), NULL);
225 #elif defined(_WIN32)
226 timer->elapse.tv_sec = 0;
227 timer->elapse.tv_usec = 0;
228 HANDLE h = GetCurrentProcess();
229 FILETIME creationTime, exitTime, kernelTime, userTime;
230 GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
231 unsigned __int64 ktm, utm;
232 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
233 ktm |= kernelTime.dwLowDateTime;
235 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
236 utm |= userTime.dwLowDateTime;
238 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
239 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
243 void xbt_os_cputimer_resume(xbt_os_timer_t timer)
245 #if HAVE_POSIX_GETTIME
246 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
247 timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
248 clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
249 #elif HAVE_GETTIMEOFDAY
250 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
251 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
252 gettimeofday(&(timer->start), NULL);
253 #elif defined(_WIN32)
254 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
255 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
256 HANDLE h = GetCurrentProcess();
257 FILETIME creationTime, exitTime, kernelTime, userTime;
258 GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
259 unsigned __int64 ktm, utm;
260 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
261 ktm |= kernelTime.dwLowDateTime;
263 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
264 utm |= userTime.dwLowDateTime;
266 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
267 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
271 void xbt_os_cputimer_stop(xbt_os_timer_t timer)
273 #if HAVE_POSIX_GETTIME
274 clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->stop));
275 #elif HAVE_GETTIMEOFDAY
276 gettimeofday(&(timer->stop), NULL);
277 #elif defined(_WIN32)
278 HANDLE h = GetCurrentProcess();
279 FILETIME creationTime, exitTime, kernelTime, userTime;
280 GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
281 unsigned __int64 ktm, utm;
282 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
283 ktm |= kernelTime.dwLowDateTime;
285 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
286 utm |= userTime.dwLowDateTime;
288 timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
289 timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
293 void xbt_os_threadtimer_start(xbt_os_timer_t timer)
295 #if HAVE_POSIX_GETTIME
296 timer->elapse.tv_sec = 0;
297 timer->elapse.tv_nsec = 0;
298 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
299 #elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
300 timer->elapse.tv_sec = 0;
301 timer->elapse.tv_usec = 0;
302 mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
303 thread_basic_info_data_t thi_data;
304 thread_basic_info_t thi = &thi_data;
305 thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
306 timer->start.tv_usec = thi->system_time.microseconds + thi->user_time.microseconds;
307 timer->start.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
308 #elif HAVE_GETTIMEOFDAY //return time and not cputime in this case
309 timer->elapse.tv_sec = 0;
310 timer->elapse.tv_usec = 0;
311 gettimeofday(&(timer->start), NULL);
312 #elif defined(_WIN32)
313 HANDLE h = GetCurrentThread();
314 FILETIME creationTime, exitTime, kernelTime, userTime;
315 GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
316 unsigned __int64 ktm, utm;
317 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
318 ktm |= kernelTime.dwLowDateTime;
320 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
321 utm |= userTime.dwLowDateTime;
323 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
324 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
328 void xbt_os_threadtimer_resume(xbt_os_timer_t timer)
330 #if HAVE_POSIX_GETTIME
331 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
332 timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
333 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
334 #elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
335 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
336 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
337 mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
338 thread_basic_info_data_t thi_data;
339 thread_basic_info_t thi = &thi_data;
340 thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
341 timer->start.tv_usec = thi->system_time.microseconds + thi->user_time.microseconds;
342 timer->start.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
343 #elif HAVE_GETTIMEOFDAY
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 gettimeofday(&(timer->start), NULL);
347 #elif defined(_WIN32)
348 timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
349 timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
350 HANDLE h = GetCurrentThread();
351 FILETIME creationTime, exitTime, kernelTime, userTime;
352 GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
353 unsigned __int64 ktm, utm;
354 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
355 ktm |= kernelTime.dwLowDateTime;
357 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
358 utm |= userTime.dwLowDateTime;
360 timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
361 timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
365 void xbt_os_threadtimer_stop(xbt_os_timer_t timer)
367 #if HAVE_POSIX_GETTIME
368 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->stop));
369 #elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
370 mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
371 thread_basic_info_data_t thi_data;
372 thread_basic_info_t thi = &thi_data;
373 thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
374 timer->stop.tv_usec = thi->system_time.microseconds + thi->user_time.microseconds;
375 timer->stop.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
376 #elif HAVE_GETTIMEOFDAY //if nothing else is available, return just time
377 gettimeofday(&(timer->stop), NULL);
378 #elif defined(_WIN32)
379 HANDLE h = GetCurrentThread();
380 FILETIME creationTime, exitTime, kernelTime, userTime;
381 GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
382 unsigned __int64 ktm, utm;
383 ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
384 ktm |= kernelTime.dwLowDateTime;
386 utm = (unsigned __int64) userTime.dwHighDateTime << 32;
387 utm |= userTime.dwLowDateTime;
389 timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
390 timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);