/* $Id$ */
-/* sysdep.c -- all system dependency */
-/* no system header should be loaded out of this file so that we have only */
-/* one file to check when porting to another OS */
+/* xbt_os_time.c -- portable interface to time-related functions */
-/* Copyright (c) 2004 Martin Quinson. All rights reserved. */
+/* Copyright (c) 2004-2008 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/xbt_os_time.h" /* this module */
#include "xbt/log.h"
#include "portable.h"
+#include <math.h> /* floor */
-/** @brief like free
- @hideinitializer */
-XBT_PUBLIC(void) xbt_free_f(void* p)
-{
- free(p);
-}
+#ifdef WIN32
+#include <sys/timeb.h>
+#endif
+double xbt_os_time(void) {
+#ifdef HAVE_GETTIMEOFDAY
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+#elif defined(WIN32)
+ struct timeval tv;
+# if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
+ struct _timeb tm;
-/* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus
- disabled in SDL source code */
+ _ftime (&tm);
+ tv.tv_sec = tm.time;
+ tv.tv_usec = tm.millitm * 1000;
-/* \defgroup XBT_sysdep All system dependency
- * \brief This section describes many macros/functions that can serve as
- * an OS abstraction.
- */
+# else
+ FILETIME ft;
+ unsigned __int64 tm;
-double xbt_os_time(void) {
-#ifdef HAVE_GETTIMEOFDAY
- struct timeval tv;
+ GetSystemTimeAsFileTime (&ft);
+ tm = (unsigned __int64)ft.dwHighDateTime << 32;
+ tm |= ft.dwLowDateTime;
+ tm /=10;
+ tm -= 11644473600000000ULL;
- gettimeofday(&tv, NULL);
+ tv.tv_sec = (long) (tm / 1000000L);
+ tv.tv_usec = (long) (tm % 1000000L);
+# endif /* windows version checker */
- return (double)(tv.tv_sec + tv.tv_usec / 1000000.0);
-#else
- /* 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
+ Sleep((floor(sec) * 1000) +((sec - floor(sec)) * 1000));
+
+#else /* don't have usleep. 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
}
-/*XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sysdep, xbt, "System dependency");*/
+/* 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_GETTIMEOFDAY
- struct timeval start,stop;
+ struct timeval start,stop;
#else
- unsigned long int start,stop;
+ unsigned long int start,stop;
#endif
};
xbt_os_timer_t xbt_os_timer_new(void) {
- return xbt_new0(struct s_xbt_os_timer,1);
+ return xbt_new0(struct s_xbt_os_timer,1);
}
void xbt_os_timer_free(xbt_os_timer_t timer) {
- free (timer);
+ free (timer);
}
void xbt_os_timer_start(xbt_os_timer_t timer) {
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&(timer->start), NULL);
-#else
+#else
timer->start = (unsigned long int)(time(NULL));
#endif
}
void xbt_os_timer_stop(xbt_os_timer_t timer) {
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&(timer->stop), NULL);
-#else
+#else
timer->stop = (unsigned long int)(time(NULL));
#endif
}
double xbt_os_timer_elapsed(xbt_os_timer_t timer) {
#ifdef 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);
-#else
- return (double)timer->stop - (double)timer->start;
+ return ((double)timer->stop.tv_sec) - ((double)timer->start.tv_sec) +
+ ((((double)timer->stop.tv_usec) - ((double)timer->start.tv_usec)) / 1000000.0);
+#else
+ return (double)timer->stop - (double)timer->start;
#endif
}
