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, stop, elapse;
  96 #elif HAVE_GETTIMEOFDAY || defined(_WIN32)
  97   struct timeval start, stop, elapse;
  98 #else
  99   unsigned long int start, stop, elapse;
 100 #endif
 101 };
 102
 103 size_t xbt_os_timer_size(void){
 104   return sizeof(struct s_xbt_os_timer);
 105 }
 106
 107 xbt_os_timer_t xbt_os_timer_new(void)
 108 {
 109   return xbt_new0(struct s_xbt_os_timer, 1);
 110 }
 111
 112 void xbt_os_timer_free(xbt_os_timer_t timer)
 113 {
 114   free(timer);
 115 }
 116
 117 double xbt_os_timer_elapsed(xbt_os_timer_t timer)
 118 {
 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 )) /
 125          1000000.0);
 126 #else
 127   return (double) timer->stop - (double) timer->start + (double) timer->elapse;
 128 #endif
 129 }
 130
 131 void xbt_os_walltimer_start(xbt_os_timer_t timer)
 132 {
 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;
 144   FILETIME ft;
 145   unsigned __int64 tm;
 146
 147   GetSystemTimeAsFileTime(&ft);
 148   tm = (unsigned __int64) ft.dwHighDateTime << 32;
 149   tm |= ft.dwLowDateTime;
 150   tm /= 10;
 151   tm -= 11644473600000000ULL;
 152
 153   timer->start.tv_sec = (long) (tm / 1000000L);
 154   timer->start.tv_usec = (long) (tm % 1000000L);
 155 #else
 156   timer->elapse = 0;
 157   timer->start = (unsigned long int) (time(NULL));
 158 #endif
 159 }
 160
 161 void xbt_os_walltimer_resume(xbt_os_timer_t timer)
 162 {
 163 #if HAVE_POSIX_GETTIME
 164   timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
 165
 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;
 175   FILETIME ft;
 176   unsigned __int64 tm;
 177
 178   GetSystemTimeAsFileTime(&ft);
 179   tm = (unsigned __int64) ft.dwHighDateTime << 32;
 180   tm |= ft.dwLowDateTime;
 181   tm /= 10;
 182   tm -= 11644473600000000ULL;
 183
 184   timer->start.tv_sec = (long) (tm / 1000000L);
 185   timer->start.tv_usec = (long) (tm % 1000000L);
 186 #else
 187   timer->elapse = timer->stop - timer->start;
 188   timer->start = (unsigned long int) (time(NULL));
 189 #endif
 190 }
 191
 192 void xbt_os_walltimer_stop(xbt_os_timer_t timer)
 193 {
 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)
 199   FILETIME ft;
 200   unsigned __int64 tm;
 201
 202   GetSystemTimeAsFileTime(&ft);
 203   tm = (unsigned __int64) ft.dwHighDateTime << 32;
 204   tm |= ft.dwLowDateTime;
 205   tm /= 10;
 206   tm -= 11644473600000000ULL;
 207
 208   timer->stop.tv_sec = (long) (tm / 1000000L);
 209   timer->stop.tv_usec = (long) (tm % 1000000L);
 210 #else
 211   timer->stop = (unsigned long int) (time(NULL));
 212 #endif
 213 }
 214
 215 void xbt_os_cputimer_start(xbt_os_timer_t timer)
 216 {
 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;
 234   ktm /= 10;
 235   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 236   utm |= userTime.dwLowDateTime;
 237   utm /= 10;
 238   timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 239   timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 240 #endif
 241 }
 242
 243 void xbt_os_cputimer_resume(xbt_os_timer_t timer)
 244 {
 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;
 262   ktm /= 10;
 263   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 264   utm |= userTime.dwLowDateTime;
 265   utm /= 10;
 266   timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 267   timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 268 #endif
 269 }
 270
 271 void xbt_os_cputimer_stop(xbt_os_timer_t timer)
 272 {
 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;
 284   ktm /= 10;
 285   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 286   utm |= userTime.dwLowDateTime;
 287   utm /= 10;
 288   timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 289   timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 290 #endif
 291 }
 292
 293 void xbt_os_threadtimer_start(xbt_os_timer_t timer)
 294 {
 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;
 319   ktm /= 10;
 320   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 321   utm |= userTime.dwLowDateTime;
 322   utm /= 10;
 323   timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 324   timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 325 #endif
 326 }
 327
 328 void xbt_os_threadtimer_resume(xbt_os_timer_t timer)
 329 {
 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;
 356   ktm /= 10;
 357   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 358   utm |= userTime.dwLowDateTime;
 359   utm /= 10;
 360   timer->start.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 361   timer->start.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 362 #endif
 363 }
 364
 365 void xbt_os_threadtimer_stop(xbt_os_timer_t timer)
 366 {
 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;
 385   ktm /= 10;
 386   utm = (unsigned __int64) userTime.dwHighDateTime << 32;
 387   utm |= userTime.dwLowDateTime;
 388   utm /= 10;
 389   timer->stop.tv_sec = (long) (ktm / 1000000L) + (long) (utm / 1000000L);
 390   timer->stop.tv_usec = (long) (ktm % 1000000L) + (long) (utm % 1000000L);
 391 #endif
 392 }