This implement the function gettimeofday() for win32 (Visual C++ does not provides...

[simgrid.git] / src / xbt / xbt_os_time.c

diff --git a/src/xbt/xbt_os_time.c b/src/xbt/xbt_os_time.c
index 94de59a..bcdf8ad 100644 (file)
--- a/src/xbt/xbt_os_time.c
+++ b/src/xbt/xbt_os_time.c
@@ -13,8 +13,86 @@
 #include "xbt/xbt_os_time.h" /* this module */
 #include "xbt/log.h"
 #include "portable.h"
+#include <math.h> /* floor */
 
 
+#ifdef WIN32
+#include <sys\timeb.h>
+#include <errno.h>
+
+int 
+gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+       
+       #if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
+       struct _timeb tm;
+       #else
+       FILETIME  ft;
+       unsigned __int64 tm;
+       #endif
+       
+       if (!tv) 
+       {
+               errno = EINVAL;
+               return -1;
+       }
+       
+       #if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400)
+       _ftime (&tm);
+       
+    tv->tv_sec = tm.time;
+    tv->tv_usec = tm.millitm * 1000;
+       #else
+       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
+       
+       
+       
+       return 0;
+}
+#endif
+
+double xbt_os_time(void) {
+#ifdef HAVE_GETTIMEOFDAY
+  struct timeval tv;
+
+  gettimeofday(&tv, NULL);
+
+  return (double)(tv.tv_sec + tv.tv_usec / 1000000.0);
+#else
+  /* Poor resolution */
+  return (double)(time(NULL));
+#endif /* HAVE_GETTIMEOFDAY? */        
+}
+
+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
+}
+
 /** @brief like free 
     @hideinitializer */
 XBT_PUBLIC(void) xbt_free_f(void* p)
@@ -32,6 +110,7 @@ XBT_PUBLIC(void) xbt_free_f(void* p)
  *  an OS abstraction.
  */
 
+/*
 double xbt_os_time(void) {
 #ifdef HAVE_GETTIMEOFDAY
   struct timeval tv;
@@ -39,11 +118,11 @@ double xbt_os_time(void) {
   gettimeofday(&tv, NULL);
 
   return (double)(tv.tv_sec + tv.tv_usec / 1000000.0);
-#else
+#else*/
   /* Poor resolution */
-  return (double)(time(NULL));
-#endif /* HAVE_GETTIMEOFDAY? */        
-}
+/*  return (double)(time(NULL));*/
+//#endif /* HAVE_GETTIMEOFDAY? */      
+//}
 
 /*XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sysdep, xbt, "System dependency");*/