src/xbt/xbt_os_time.c

   1 /* xbt_os_time.c -- portable interface to time-related functions            */
   2
   3 /* Copyright (c) 2007-2016. The SimGrid Team. All rights reserved.          */
   4
   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. */
   7
   8 #include "src/internal_config.h"
   9 #include "xbt/sysdep.h"
  10 #include "xbt/log.h"
  11 #include "xbt/xbt_os_time.h"    /* this module */
  12 #include <math.h>               /* floor */
  13 #include <sys/time.h>
  14 #include <time.h>
  15
  16 #ifdef _WIN32
  17 #include <sys/timeb.h>
  18 #include <windows.h>
  19 #endif
  20
  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
  24 #endif
  25
  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>
  39 #endif
  40
  41 double xbt_os_time(void)
  42 {
  43 #if HAVE_GETTIMEOFDAY
  44   struct timeval tv;
  45   gettimeofday(&tv, NULL);
  46 #elif defined(_WIN32)
  47   struct timeval tv;
  48   FILETIME ft;
  49   unsigned __int64 tm;
  50
  51   GetSystemTimeAsFileTime(&ft);
  52   tm = (unsigned __int64) ft.dwHighDateTime << 32;
  53   tm |= ft.dwLowDateTime;
  54   tm /= 10;
  55   tm -= 11644473600000000ULL;
  56
  57   tv.tv_sec = (long) (tm / 1000000L);
  58   tv.tv_usec = (long) (tm % 1000000L);
  59
  60 #else                           /* not windows, no gettimeofday => poor resolution */
  61   return (double) (time(NULL));
  62 #endif                          /* HAVE_GETTIMEOFDAY? */
  63
  64   return (double) (tv.tv_sec + tv.tv_usec / 1000000.0);
  65 }
  66
  67 void xbt_os_sleep(double sec)
  68 {
  69
  70 #ifdef _WIN32
  71   Sleep((floor(sec) * 1000) + ((sec - floor(sec)) * 1000));
  72
  73 #elif HAVE_NANOSLEEP
  74   struct timespec ts;
  75   ts.tv_sec = sec;
  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;
  80
  81   timeout.tv_sec = (unsigned long) (sec);
  82   timeout.tv_usec = (sec - floor(sec)) * 1000000;
  83
  84   select(0, NULL, NULL, NULL, &timeout);
  85 #endif
  86 }
  87
  88 /* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus  disabled in SDL source code */
  89
  90 /* \defgroup XBT_sysdep All system dependency
  91  * \brief This section describes many macros/functions that can serve as  an OS abstraction.
  92  */
  93 struct s_xbt_os_timer {
  94 #if HAVE_POSIX_GETTIME
  95   struct timespec start;
  96   struct timespec stop;
  97   struct timespec elapse;
  98 #elif HAVE_GETTIMEOFDAY || defined(_WIN32)
  99   struct timeval start;
 100   struct timeval stop;
 101   struct timeval elapse;
 102 #else
 103   unsigned long int start;
 104   unsigned long int stop;
 105   unsigned long int elapse;
 106 #endif
 107 };
 108
 109 size_t xbt_os_timer_size(void)
 110 {
 111   return sizeof(struct s_xbt_os_timer);
 112 }
 113
 114 xbt_os_timer_t xbt_os_timer_new(void)
 115 {
 116   return xbt_new0(struct s_xbt_os_timer, 1);
 117 }
 118
 119 void xbt_os_timer_free(xbt_os_timer_t timer)
 120 {
 121   free(timer);
 122 }
 123
 124 double xbt_os_timer_elapsed(xbt_os_timer_t timer)
 125 {
 126 #if HAVE_POSIX_GETTIME
 127   return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) + ((double) timer->elapse.tv_sec ) +
 128       ((((double) timer->stop.tv_nsec) - ((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) + ((double) timer->elapse.tv_sec ) +
 131       ((((double) timer->stop.tv_usec) - ((double) timer->start.tv_usec) + ((double) timer->elapse.tv_usec )) /
 132          1000000.0);
 133 #else
 134   return (double) timer->stop - (double) timer->start + (double) timer->elapse;
 135 #endif
 136 }
 137
 138 void xbt_os_walltimer_start(xbt_os_timer_t timer)
 139 {
 140 #if HAVE_POSIX_GETTIME
 141   timer->elapse.tv_sec = 0;
 142   timer->elapse.tv_nsec = 0;
 143   clock_gettime(CLOCK_REALTIME, &(timer->start));
 144 #elif HAVE_GETTIMEOFDAY
 145   timer->elapse.tv_sec = 0;
 146   timer->elapse.tv_usec = 0;
 147   gettimeofday(&(timer->start), NULL);
 148 #elif defined(_WIN32)
 149   timer->elapse.tv_sec = 0;
 150   timer->elapse.tv_usec = 0;
 151   FILETIME ft;
 152   unsigned __int64 tm;
 153
 154   GetSystemTimeAsFileTime(&ft);
 155   tm = (unsigned __int64) ft.dwHighDateTime << 32;
 156   tm |= ft.dwLowDateTime;
 157   tm /= 10;
 158   tm -= 11644473600000000ULL;
 159
 160   timer->start.tv_sec = (long) (tm / 1000000L);
 161   timer->start.tv_usec = (long) (tm % 1000000L);
 162 #else
 163   timer->elapse = 0;
 164   timer->start = (unsigned long int) (time(NULL));
 165 #endif
 166 }
 167
 168 void xbt_os_walltimer_resume(xbt_os_timer_t timer)
 169 {
 170 #if HAVE_POSIX_GETTIME
 171   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 172
 173    timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
 174   clock_gettime(CLOCK_REALTIME, &(timer->start));
 175 #elif HAVE_GETTIMEOFDAY
 176   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 177   timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
 178   gettimeofday(&(timer->start), NULL);
 179 #elif defined(_WIN32)
 180   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 181   timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
 182   FILETIME ft;
 183   unsigned __int64 tm;
 184
 185   GetSystemTimeAsFileTime(&ft);
 186   tm = (unsigned __int64) ft.dwHighDateTime << 32;
 187   tm |= ft.dwLowDateTime;
 188   tm /= 10;
 189   tm -= 11644473600000000ULL;
 190
 191   timer->start.tv_sec = (long) (tm / 1000000L);
 192   timer->start.tv_usec = (long) (tm % 1000000L);
 193 #else
 194   timer->elapse = timer->stop - timer->start;
 195   timer->start = (unsigned long int) (time(NULL));
 196 #endif
 197 }
 198
 199 void xbt_os_walltimer_stop(xbt_os_timer_t timer)
 200 {
 201 #if HAVE_POSIX_GETTIME
 202   clock_gettime(CLOCK_REALTIME, &(timer->stop));
 203 #elif HAVE_GETTIMEOFDAY
 204   gettimeofday(&(timer->stop), NULL);
 205 #elif defined(_WIN32)
 206   FILETIME ft;
 207   unsigned __int64 tm;
 208
 209   GetSystemTimeAsFileTime(&ft);
 210   tm = (unsigned __int64) ft.dwHighDateTime << 32;
 211   tm |= ft.dwLowDateTime;
 212   tm /= 10;
 213   tm -= 11644473600000000ULL;
 214
 215   timer->stop.tv_sec = (long) (tm / 1000000L);
 216   timer->stop.tv_usec = (long) (tm % 1000000L);
 217 #else
 218   timer->stop = (unsigned long int) (time(NULL));
 219 #endif
 220 }
 221
 222 void xbt_os_cputimer_start(xbt_os_timer_t timer)
 223 {
 224 #if HAVE_POSIX_GETTIME
 225   timer->elapse.tv_sec = 0;
 226   timer->elapse.tv_nsec = 0;
 227   clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
 228 #elif HAVE_GETTIMEOFDAY //return time and not cputime in this case
 229   timer->elapse.tv_sec = 0;
 230   timer->elapse.tv_usec = 0;
 231   gettimeofday(&(timer->start), NULL);
 232 #elif defined(_WIN32)
 233   timer->elapse.tv_sec = 0;
 234   timer->elapse.tv_usec = 0;
 235   HANDLE h = GetCurrentProcess();
 236   FILETIME creationTime, exitTime, kernelTime, userTime;
 237   GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
 238   unsigned __int64 ktm, utm;
 239   ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
 240   ktm |= kernelTime.dwLowDateTime;
 241   ktm /= 10;
 242   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 243   utm |= userTime.dwLowDateTime;
 244   utm /= 10;
 245   timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 246   timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 247 #endif
 248 }
 249
 250 void xbt_os_cputimer_resume(xbt_os_timer_t timer)
 251 {
 252 #if HAVE_POSIX_GETTIME
 253   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 254   timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
 255   clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
 256 #elif HAVE_GETTIMEOFDAY
 257   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 258   timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
 259   gettimeofday(&(timer->start), NULL);
 260 #elif defined(_WIN32)
 261   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 262   timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
 263   HANDLE h = GetCurrentProcess();
 264   FILETIME creationTime, exitTime, kernelTime, userTime;
 265   GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
 266   unsigned __int64 ktm, utm;
 267   ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
 268   ktm |= kernelTime.dwLowDateTime;
 269   ktm /= 10;
 270   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 271   utm |= userTime.dwLowDateTime;
 272   utm /= 10;
 273   timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 274   timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 275 #endif
 276 }
 277
 278 void xbt_os_cputimer_stop(xbt_os_timer_t timer)
 279 {
 280 #if HAVE_POSIX_GETTIME
 281   clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->stop));
 282 #elif HAVE_GETTIMEOFDAY
 283   gettimeofday(&(timer->stop), NULL);
 284 #elif defined(_WIN32)
 285   HANDLE h = GetCurrentProcess();
 286   FILETIME creationTime, exitTime, kernelTime, userTime;
 287   GetProcessTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
 288   unsigned __int64 ktm, utm;
 289   ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
 290   ktm |= kernelTime.dwLowDateTime;
 291   ktm /= 10;
 292   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 293   utm |= userTime.dwLowDateTime;
 294   utm /= 10;
 295   timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 296   timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 297 #endif
 298 }
 299
 300 void xbt_os_threadtimer_start(xbt_os_timer_t timer)
 301 {
 302 #if HAVE_POSIX_GETTIME
 303   timer->elapse.tv_sec = 0;
 304   timer->elapse.tv_nsec = 0;
 305   clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
 306 #elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
 307   timer->elapse.tv_sec = 0;
 308   timer->elapse.tv_usec = 0;
 309   mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
 310   thread_basic_info_data_t thi_data;
 311   thread_basic_info_t thi = &thi_data;
 312   thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
 313   timer->start.tv_usec =  thi->system_time.microseconds + thi->user_time.microseconds;
 314   timer->start.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
 315 #elif HAVE_GETTIMEOFDAY //return time and not cputime in this case
 316   timer->elapse.tv_sec = 0;
 317   timer->elapse.tv_usec = 0;
 318   gettimeofday(&(timer->start), NULL);
 319 #elif defined(_WIN32)
 320   HANDLE h = GetCurrentThread();
 321   FILETIME creationTime, exitTime, kernelTime, userTime;
 322   GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
 323   unsigned __int64 ktm, utm;
 324   ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
 325   ktm |= kernelTime.dwLowDateTime;
 326   ktm /= 10;
 327   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 328   utm |= userTime.dwLowDateTime;
 329   utm /= 10;
 330   timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 331   timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 332 #endif
 333 }
 334
 335 void xbt_os_threadtimer_resume(xbt_os_timer_t timer)
 336 {
 337 #if HAVE_POSIX_GETTIME
 338   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 339   timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
 340   clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
 341 #elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
 342   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 343   timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
 344   mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
 345   thread_basic_info_data_t thi_data;
 346   thread_basic_info_t thi = &thi_data;
 347   thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
 348   timer->start.tv_usec =  thi->system_time.microseconds + thi->user_time.microseconds;
 349   timer->start.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
 350 #elif HAVE_GETTIMEOFDAY
 351   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 352   timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
 353   gettimeofday(&(timer->start), NULL);
 354 #elif defined(_WIN32)
 355   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 356   timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
 357   HANDLE h = GetCurrentThread();
 358   FILETIME creationTime, exitTime, kernelTime, userTime;
 359   GetThreadTimes(h, &creationTime, &exitTime, &kernelTime, &userTime);
 360   unsigned __int64 ktm, utm;
 361   ktm = (unsigned __int64) kernelTime.dwHighDateTime << 32;
 362   ktm |= kernelTime.dwLowDateTime;
 363   ktm /= 10;
 364   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 365   utm |= userTime.dwLowDateTime;
 366   utm /= 10;
 367   timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 368   timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 369 #endif
 370 }
 371
 372 void xbt_os_threadtimer_stop(xbt_os_timer_t timer)
 373 {
 374 #if HAVE_POSIX_GETTIME
 375   clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->stop));
 376 #elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
 377   mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
 378   thread_basic_info_data_t thi_data;
 379   thread_basic_info_t thi = &thi_data;
 380   thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
 381   timer->stop.tv_usec =  thi->system_time.microseconds + thi->user_time.microseconds;
 382   timer->stop.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
 383 #elif HAVE_GETTIMEOFDAY //if nothing else is available, return just time
 384   gettimeofday(&(timer->stop), NULL);
 385 #elif defined(_WIN32)
 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;
 392   ktm /= 10;
 393   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 394   utm |= userTime.dwLowDateTime;
 395   utm /= 10;
 396   timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 397   timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 398 #endif
 399 }