X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/663f424beab193b084453ba397102844dcd5ed64..00f2021a5b4cf37f52dab7839d0d29505a60e673:/src/xbt/xbt_os_time.c

diff --git a/src/xbt/xbt_os_time.c b/src/xbt/xbt_os_time.c
index 0345e0f5eb..b6a16ad27f 100644
--- a/src/xbt/xbt_os_time.c
+++ b/src/xbt/xbt_os_time.c
@@ -1,137 +1,267 @@
 /* xbt_os_time.c -- portable interface to time-related functions            */
 
-/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
- * All rights reserved.                                                     */
+/* Copyright (c) 2007-2023. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
+#include "src/internal_config.h"
 #include "xbt/sysdep.h"
-#include "xbt/xbt_os_time.h"    /* this module */
 #include "xbt/log.h"
-#include "portable.h"
+#include "xbt/xbt_os_time.h"    /* this module */
 #include <math.h>               /* floor */
+#include <sys/time.h>
+#include <time.h>
 
+#include <unistd.h>
 
-#ifdef WIN32
-#include <sys/timeb.h>
+//Freebsd doesn't provide this clock_gettime flag yet, because it was added too recently (after 1993)
+#if defined (CLOCK_PROF) && ! defined (CLOCK_PROCESS_CPUTIME_ID)
+#define CLOCK_PROCESS_CPUTIME_ID CLOCK_PROF
+#endif
+
+#if defined(__APPLE__) && defined(__MACH__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <mach/mach_init.h>
+#include <mach/mach_host.h>
+#include <mach/mach_port.h>
+#include <mach/mach_traps.h>
+#include <mach/task_info.h>
+#include <mach/thread_info.h>
+#include <mach/thread_act.h>
+#include <mach/vm_region.h>
+#include <mach/vm_map.h>
+#include <mach/task.h>
 #endif
 
 double xbt_os_time(void)
 {
-#ifdef HAVE_GETTIMEOFDAY
+#if HAVE_GETTIMEOFDAY
   struct timeval tv;
   gettimeofday(&tv, NULL);
-#elif defined(WIN32)
-  struct timeval tv;
-#  if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
-  struct _timeb tm;
-
-  _ftime(&tm);
-
-  tv.tv_sec = tm.time;
-  tv.tv_usec = tm.millitm * 1000;
-
-#  else
-  FILETIME ft;
-  unsigned __int64 tm;
-
-  GetSystemTimeAsFileTime(&ft);
-  tm = (unsigned __int64) ft.dwHighDateTime << 32;
-  tm |= ft.dwLowDateTime;
-  tm /= 10;
-  tm -= 11644473600000000ULL;
-
-  tv.tv_sec = (long) (tm / 1000000L);
-  tv.tv_usec = (long) (tm % 1000000L);
-#  endif /* windows version checker */
-
-#else /* not windows, no gettimeofday => poor resolution */
+#else                           /* no gettimeofday => poor resolution */
   return (double) (time(NULL));
-#endif /* HAVE_GETTIMEOFDAY? */
+#endif                          /* HAVE_GETTIMEOFDAY? */
 
-  return (double) (tv.tv_sec + tv.tv_usec / 1000000.0);
+  return (double)tv.tv_sec + (double)tv.tv_usec / 1e6;
 }
 
 void xbt_os_sleep(double sec)
 {
-#ifdef HAVE_USLEEP
-  sleep(sec);
-  (void) usleep((sec - floor(sec)) * 1000000);
 
-#elif WIN32
-  Sleep((floor(sec) * 1000) + ((sec - floor(sec)) * 1000));
-
-#else /* don't have usleep. Use select to sleep less than one second */
+#if HAVE_NANOSLEEP
+  struct timespec ts;
+  ts.tv_sec  = (time_t)sec;
+  ts.tv_nsec = (long)((sec - floor(sec)) * 1e9);
+  nanosleep (&ts, NULL);
+#else                           /* don't have nanosleep. Use select to sleep less than one second */
   struct timeval timeout;
 
-
-  timeout.tv_sec = (unsigned long) (sec);
-  timeout.tv_usec = (sec - floor(sec)) * 1000000;
+  timeout.tv_sec  = (long)sec;
+  timeout.tv_usec = (long)(sec - floor(sec)) * 1e6);
 
   select(0, NULL, NULL, NULL, &timeout);
 #endif
 }
 
-/* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus
-   disabled in SDL source code */
+/* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus  disabled in SDL source code */
 
-
-/* \defgroup XBT_sysdep All system dependency
- * \brief This section describes many macros/functions that can serve as
- *  an OS abstraction.
+/* @defgroup XBT_sysdep All system dependency
+ * @brief This section describes many macros/functions that can serve as  an OS abstraction.
  */
-
-
 struct s_xbt_os_timer {
-#ifdef HAVE_POSIX_GETTIME
-  struct timespec start, stop;
-#elif defined(HAVE_GETTIMEOFDAY)
-  struct timeval start, stop;
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  struct timespec start;
+  struct timespec stop;
+  struct timespec elapse;
+#elif HAVE_GETTIMEOFDAY
+  struct timeval start;
+  struct timeval stop;
+  struct timeval elapse;
 #else
-  unsigned long int start, stop;
+  unsigned long int start;
+  unsigned long int stop;
+  unsigned long int elapse;
 #endif
 };
 
-xbt_os_timer_t xbt_os_timer_new(void) {
+size_t xbt_os_timer_size(void)
+{
+  return sizeof(struct s_xbt_os_timer);
+}
+
+xbt_os_timer_t xbt_os_timer_new(void)
+{
   return xbt_new0(struct s_xbt_os_timer, 1);
 }
 
-void xbt_os_timer_free(xbt_os_timer_t timer) {
+void xbt_os_timer_free(xbt_os_timer_t timer)
+{
   free(timer);
 }
 
-void xbt_os_timer_start(xbt_os_timer_t timer) {
-#ifdef HAVE_POSIX_GETTIME
-  clock_gettime(CLOCK_PROCESS_CPUTIME_ID,&(timer->start));
-#elif defined(HAVE_GETTIMEOFDAY)
+double xbt_os_timer_elapsed(const_xbt_os_timer_t timer)
+{
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) + ((double) timer->elapse.tv_sec ) +
+      ((((double) timer->stop.tv_nsec) - ((double) timer->start.tv_nsec) + ((double) timer->elapse.tv_nsec )) / 1e9);
+#elif HAVE_GETTIMEOFDAY
+  return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) + ((double) timer->elapse.tv_sec ) +
+      ((((double) timer->stop.tv_usec) - ((double) timer->start.tv_usec) + ((double) timer->elapse.tv_usec )) /
+         1000000.0);
+#else
+  return (double) timer->stop - (double) timer->start + (double) timer->elapse;
+#endif
+}
+
+void xbt_os_walltimer_start(xbt_os_timer_t timer)
+{
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  timer->elapse.tv_sec = 0;
+  timer->elapse.tv_nsec = 0;
+  clock_gettime(CLOCK_REALTIME, &(timer->start));
+#elif HAVE_GETTIMEOFDAY
+  timer->elapse.tv_sec = 0;
+  timer->elapse.tv_usec = 0;
   gettimeofday(&(timer->start), NULL);
 #else
+  timer->elapse = 0;
   timer->start = (unsigned long int) (time(NULL));
 #endif
 }
 
-void xbt_os_timer_stop(xbt_os_timer_t timer) {
-#ifdef HAVE_POSIX_GETTIME
-  clock_gettime(CLOCK_PROCESS_CPUTIME_ID,&(timer->stop));
-#elif defined(HAVE_GETTIMEOFDAY)
+void xbt_os_walltimer_resume(xbt_os_timer_t timer)
+{
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
+
+   timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
+  clock_gettime(CLOCK_REALTIME, &(timer->start));
+#elif HAVE_GETTIMEOFDAY
+  timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
+  timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
+  gettimeofday(&(timer->start), NULL);
+#else
+  timer->elapse = timer->stop - timer->start;
+  timer->start = (unsigned long int) (time(NULL));
+#endif
+}
+
+void xbt_os_walltimer_stop(xbt_os_timer_t timer)
+{
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  clock_gettime(CLOCK_REALTIME, &(timer->stop));
+#elif HAVE_GETTIMEOFDAY
   gettimeofday(&(timer->stop), NULL);
 #else
   timer->stop = (unsigned long int) (time(NULL));
 #endif
 }
 
-double xbt_os_timer_elapsed(xbt_os_timer_t timer)
+void xbt_os_cputimer_start(xbt_os_timer_t timer)
 {
-#ifdef HAVE_POSIX_GETTIME
-  return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) +
-      ((((double) timer->stop.tv_nsec) -
-        ((double) timer->start.tv_nsec)) / 1e9);
-#elif defined(HAVE_GETTIMEOFDAY)
-  return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) +
-    ((((double) timer->stop.tv_usec) -
-      ((double) timer->start.tv_usec)) / 1000000.0);
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  timer->elapse.tv_sec = 0;
+  timer->elapse.tv_nsec = 0;
+  clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
+#elif HAVE_GETTIMEOFDAY //return time and not cputime in this case
+  timer->elapse.tv_sec = 0;
+  timer->elapse.tv_usec = 0;
+  gettimeofday(&(timer->start), NULL);
+#else
+# error The cpu timers of SimGrid do not seem to work on your platform.
+#endif
+}
+
+void xbt_os_cputimer_resume(xbt_os_timer_t timer)
+{
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
+  timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
+  clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
+#elif HAVE_GETTIMEOFDAY
+  timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
+  timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
+  gettimeofday(&(timer->start), NULL);
+#else
+# error The cpu timers of SimGrid do not seem to work on your platform.
+#endif
+}
+
+void xbt_os_cputimer_stop(xbt_os_timer_t timer)
+{
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->stop));
+#elif HAVE_GETTIMEOFDAY
+  gettimeofday(&(timer->stop), NULL);
+#else
+# error The cpu timers of SimGrid do not seem to work on your platform.
+#endif
+}
+
+void xbt_os_threadtimer_start(xbt_os_timer_t timer)
+{
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  timer->elapse.tv_sec = 0;
+  timer->elapse.tv_nsec = 0;
+  clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
+#elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
+  timer->elapse.tv_sec = 0;
+  timer->elapse.tv_usec = 0;
+  mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
+  thread_basic_info_data_t thi_data;
+  thread_basic_info_t thi = &thi_data;
+  thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
+  timer->start.tv_usec =  thi->system_time.microseconds + thi->user_time.microseconds;
+  timer->start.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
+#elif HAVE_GETTIMEOFDAY //return time and not cputime in this case
+  timer->elapse.tv_sec = 0;
+  timer->elapse.tv_usec = 0;
+  gettimeofday(&(timer->start), NULL);
+#else
+# error The thread timers of SimGrid do not seem to work on your platform.
+#endif
+}
+
+void xbt_os_threadtimer_resume(xbt_os_timer_t timer)
+{
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
+  timer->elapse.tv_nsec += timer->stop.tv_nsec - timer->start.tv_nsec;
+  clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->start));
+#elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
+  timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
+  timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
+  mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
+  thread_basic_info_data_t thi_data;
+  thread_basic_info_t thi = &thi_data;
+  thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
+  timer->start.tv_usec =  thi->system_time.microseconds + thi->user_time.microseconds;
+  timer->start.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
+#elif HAVE_GETTIMEOFDAY
+  timer->elapse.tv_sec += timer->stop.tv_sec - timer->start.tv_sec;
+  timer->elapse.tv_usec += timer->stop.tv_usec - timer->start.tv_usec;
+  gettimeofday(&(timer->start), NULL);
+#else
+# error The thread timers of SimGrid do not seem to work on your platform.
+#endif
+}
+
+void xbt_os_threadtimer_stop(xbt_os_timer_t timer)
+{
+#if HAVE_POSIX_GETTIME && defined (_POSIX_THREAD_CPUTIME)
+  clock_gettime(CLOCK_THREAD_CPUTIME_ID, &(timer->stop));
+#elif HAVE_GETTIMEOFDAY && defined(__MACH__) && defined(__APPLE__)
+  mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
+  thread_basic_info_data_t thi_data;
+  thread_basic_info_t thi = &thi_data;
+  thread_info(mach_thread_self(), THREAD_BASIC_INFO, (thread_info_t)thi, &count);
+  timer->stop.tv_usec =  thi->system_time.microseconds + thi->user_time.microseconds;
+  timer->stop.tv_sec = thi->system_time.seconds + thi->user_time.seconds;
+#elif HAVE_GETTIMEOFDAY //if nothing else is available, return just time
+  gettimeofday(&(timer->stop), NULL);
 #else
-  return (double) timer->stop - (double) timer->start;
+# error The thread timers of SimGrid do not seem to work on your platform.
 #endif
 }