-/* xbt_os_time.c -- portable interface to time-related functions */\r
-\r
-/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.\r
- * All rights reserved. */\r
-\r
-/* This program is free software; you can redistribute it and/or modify it\r
- * under the terms of the license (GNU LGPL) which comes with this package. */\r
-\r
-#include "xbt/sysdep.h"\r
-#include "xbt/xbt_os_time.h" /* this module */\r
-#include "xbt/log.h"\r
-#include "portable.h"\r
-#include <math.h> /* floor */\r
-\r
-#ifdef WIN32\r
-#include <sys/timeb.h>\r
-#endif\r
-\r
-double xbt_os_time(void)\r
-{\r
-#ifdef HAVE_GETTIMEOFDAY\r
- struct timeval tv;\r
- gettimeofday(&tv, NULL);\r
-#elif defined(WIN32)\r
- struct timeval tv;\r
-# if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)\r
- struct _timeb tm;\r
-\r
- _ftime(&tm);\r
-\r
- tv.tv_sec = tm.time;\r
- tv.tv_usec = tm.millitm * 1000;\r
-\r
-# else\r
- FILETIME ft;\r
- unsigned __int64 tm;\r
-\r
- GetSystemTimeAsFileTime(&ft);\r
- tm = (unsigned __int64) ft.dwHighDateTime << 32;\r
- tm |= ft.dwLowDateTime;\r
- tm /= 10;\r
- tm -= 11644473600000000ULL;\r
-\r
- tv.tv_sec = (long) (tm / 1000000L);\r
- tv.tv_usec = (long) (tm % 1000000L);\r
-# endif /* windows version checker */\r
-\r
-#else /* not windows, no gettimeofday => poor resolution */\r
- return (double) (time(NULL));\r
-#endif /* HAVE_GETTIMEOFDAY? */\r
-\r
- return (double) (tv.tv_sec + tv.tv_usec / 1000000.0);\r
-}\r
-\r
-void xbt_os_sleep(double sec)\r
-{\r
-#ifdef HAVE_USLEEP\r
- sleep(sec);\r
- (void) usleep((sec - floor(sec)) * 1000000);\r
-\r
-#elif WIN32\r
- Sleep((floor(sec) * 1000) + ((sec - floor(sec)) * 1000));\r
-\r
-#else /* don't have usleep. Use select to sleep less than one second */\r
- struct timeval timeout;\r
-\r
-\r
- timeout.tv_sec = (unsigned long) (sec);\r
- timeout.tv_usec = (sec - floor(sec)) * 1000000;\r
-\r
- select(0, NULL, NULL, NULL, &timeout);\r
-#endif\r
-}\r
-\r
-/* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus\r
- disabled in SDL source code */\r
-\r
-\r
-/* \defgroup XBT_sysdep All system dependency\r
- * \brief This section describes many macros/functions that can serve as\r
- * an OS abstraction.\r
- */\r
-\r
-\r
-struct s_xbt_os_timer {\r
-#ifdef HAVE_POSIX_GETTIME\r
- struct timespec start, stop;\r
-#elif defined(HAVE_GETTIMEOFDAY)\r
- struct timeval start, stop;\r
-#else\r
- unsigned long int start, stop;\r
-#endif\r
-};\r
-\r
-xbt_os_timer_t xbt_os_timer_new(void) {\r
- return xbt_new0(struct s_xbt_os_timer, 1);\r
-}\r
-\r
-void xbt_os_timer_free(xbt_os_timer_t timer) {\r
- free(timer);\r
-}\r
-\r
-void xbt_os_timer_start(xbt_os_timer_t timer) {\r
-#ifdef HAVE_POSIX_GETTIME\r
- clock_gettime(CLOCK_PROCESS_CPUTIME_ID,&(timer->start));\r
-#elif defined(HAVE_GETTIMEOFDAY)\r
- gettimeofday(&(timer->start), NULL);\r
-#else\r
- timer->start = (unsigned long int) (time(NULL));\r
-#endif\r
-}\r
-\r
-void xbt_os_timer_stop(xbt_os_timer_t timer) {\r
-#ifdef HAVE_POSIX_GETTIME\r
- clock_gettime(CLOCK_PROCESS_CPUTIME_ID,&(timer->stop));\r
-#elif defined(HAVE_GETTIMEOFDAY)\r
- gettimeofday(&(timer->stop), NULL);\r
-#else\r
- timer->stop = (unsigned long int) (time(NULL));\r
-#endif\r
-}\r
-\r
-double xbt_os_timer_elapsed(xbt_os_timer_t timer)\r
-{\r
-#ifdef HAVE_POSIX_GETTIME\r
- return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) +\r
- ((((double) timer->stop.tv_nsec) -\r
- ((double) timer->start.tv_nsec)) / 1e9);\r
-#elif defined(HAVE_GETTIMEOFDAY)\r
- return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) +\r
- ((((double) timer->stop.tv_usec) -\r
- ((double) timer->start.tv_usec)) / 1000000.0);\r
-#else\r
- return (double) timer->stop - (double) timer->start;\r
-#endif\r
-}\r
+/* xbt_os_time.c -- portable interface to time-related functions */
+
+/* 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. */
+
+#include "xbt/sysdep.h"
+#include "xbt/xbt_os_time.h" /* this module */
+#include "xbt/log.h"
+#include "portable.h"
+#include <math.h> /* floor */
+
+#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)
+{
+#ifdef HAVE_GETTIMEOFDAY
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+#elif defined(_XBT_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 */
+ return (double) (time(NULL));
+#endif /* HAVE_GETTIMEOFDAY? */
+
+ return (double) (tv.tv_sec + tv.tv_usec / 1000000.0);
+}
+
+void xbt_os_sleep(double sec)
+{
+
+#ifdef _XBT_WIN32
+ Sleep((floor(sec) * 1000) + ((sec - floor(sec)) * 1000));
+
+#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;
+
+ 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 */
+
+
+/* \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, elapse;
+#elif defined(HAVE_GETTIMEOFDAY)
+ struct timeval start, stop, elapse;
+#else
+ unsigned long int start, stop, elapse;
+#endif
+};
+
+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)
+{
+ free(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
+ 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)
+{
+#ifdef HAVE_POSIX_GETTIME
+ clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(timer->stop));
+#elif defined(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)
+{
+#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) + ((double) timer->elapse.tv_nsec )) / 1e9);
+#elif defined(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
+}
