X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/4a201b7ceece70d2bc461ac48c8b746a36d07243..2489210b4ea8d03fbece8db288ef9e3ff6725723:/src/xbt/xbt_os_time.c

diff --git a/src/xbt/xbt_os_time.c b/src/xbt/xbt_os_time.c
index 2846315f72..9788f9f343 100644
--- a/src/xbt/xbt_os_time.c
+++ b/src/xbt/xbt_os_time.c
@@ -1,6 +1,7 @@
 /* xbt_os_time.c -- portable interface to time-related functions            */
 
-/* Copyright (c) 2004-2008 The SimGrid team. All rights reserved.           */
+/* Copyright (c) 2007, 2008, 2009, 2010. 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. */
@@ -11,9 +12,14 @@
 #include "portable.h"
 #include <math.h>               /* floor */
 
-
-#ifdef WIN32
+#ifdef _XBT_WIN32
 #include <sys/timeb.h>
+#include <windows.h>
+#endif
+
+//Freebsd doesn't provide this clock_gettime flag yet, because it was added too recently (after 1993)
+#ifdef __FreeBSD__
+#define CLOCK_PROCESS_CPUTTIME_ID CLOCK_PROF
 #endif
 
 double xbt_os_time(void)
@@ -21,7 +27,7 @@ double xbt_os_time(void)
 #ifdef HAVE_GETTIMEOFDAY
   struct timeval tv;
   gettimeofday(&tv, NULL);
-#elif defined(WIN32)
+#elif defined(_XBT_WIN32)
   struct timeval tv;
 #  if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
   struct _timeb tm;
@@ -43,28 +49,29 @@ double xbt_os_time(void)
 
   tv.tv_sec = (long) (tm / 1000000L);
   tv.tv_usec = (long) (tm % 1000000L);
-#  endif /* windows version checker */
+#  endif                        /* windows version checker */
 
-#else /* not windows, no gettimeofday => poor resolution */
+#else                           /* not windows, no gettimeofday => poor resolution */
   return (double) (time(NULL));
-#endif /* HAVE_GETTIMEOFDAY? */
+#endif                          /* HAVE_GETTIMEOFDAY? */
 
   return (double) (tv.tv_sec + tv.tv_usec / 1000000.0);
 }
 
 void xbt_os_sleep(double sec)
 {
-#ifdef HAVE_USLEEP
-  sleep(sec);
-  (void) usleep((sec - floor(sec)) * 1000000);
 
-#elif WIN32
+#ifdef _XBT_WIN32
   Sleep((floor(sec) * 1000) + ((sec - floor(sec)) * 1000));
 
-#else /* don't have usleep. Use select to sleep less than one second */
+#elif HAVE_NANOSLEEP
+  struct timespec ts;
+  ts.tv_sec = sec;
+  ts.tv_nsec = (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;
 
@@ -84,35 +91,62 @@ void xbt_os_sleep(double sec)
 
 struct s_xbt_os_timer {
 #ifdef HAVE_POSIX_GETTIME
-  struct timespec start, stop;
+  struct timespec start, stop, elapse;
 #elif defined(HAVE_GETTIMEOFDAY)
-  struct timeval start, stop;
+  struct timeval start, stop, elapse;
 #else
-  unsigned long int start, stop;
+  unsigned long int start, stop, elapse;
 #endif
 };
 
-xbt_os_timer_t xbt_os_timer_new(void) {
+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) {
+void xbt_os_timer_resume(xbt_os_timer_t timer)
+{
+#ifdef HAVE_POSIX_GETTIME
+  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 defined(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_timer_start(xbt_os_timer_t timer)
+{
 #ifdef HAVE_POSIX_GETTIME
-  clock_gettime(CLOCK_PROCESS_CPUTIME_ID,&(timer->start));
+  timer->elapse.tv_sec = 0;
+  timer->elapse.tv_nsec = 0;
+  clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->start));
 #elif defined(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) {
+void xbt_os_timer_stop(xbt_os_timer_t timer)
+{
 #ifdef HAVE_POSIX_GETTIME
-  clock_gettime(CLOCK_PROCESS_CPUTIME_ID,&(timer->stop));
+  clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->stop));
 #elif defined(HAVE_GETTIMEOFDAY)
   gettimeofday(&(timer->stop), NULL);
 #else
@@ -124,13 +158,16 @@ double xbt_os_timer_elapsed(xbt_os_timer_t timer)
 {
 #ifdef HAVE_POSIX_GETTIME
   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)) / 1e9);
+        ((double) timer->start.tv_nsec) + ((double) timer->elapse.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);
+  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;
+  return (double) timer->stop - (double) timer->start + (double)
+    timer->elapse;
 #endif
 }