-#include <stddef.h> /* offsetof() */
-#include <sys/types.h> /* size_t */
-#include <stdarg.h>
-
-
-/*! C++ users need love */
-#ifndef BEGIN_DECL
-# ifdef __cplusplus
-# define BEGIN_DECL extern "C" {
-# else
-# define BEGIN_DECL
-# endif
-#endif
-
-/*! C++ users need love */
-#ifndef END_DECL
-# ifdef __cplusplus
-# define END_DECL }
-# else
-# define END_DECL
-# endif
-#endif
-/* End of cruft for C++ */
-
-BEGIN_DECL
-
-/**
- * gras_os_time:
- * @Returns: number of second since the Epoch.
- * (00:00:00 UTC, January 1, 1970 in Real Life, and begining of simulation in SG)
- *
- * Get the current time.
+#include "xbt/misc.h" /* BEGIN_DECL */
+
+BEGIN_DECL()
+
+/** @addtogroup GRAS_virtu
+ * @brief System call abstraction layer (Virtualization).
+ * @{
+ */
+
+/** @brief Get the current time
+ * @return number of second since the Epoch.
+ * (00:00:00 UTC, January 1, 1970 in Real Life, and begining of simulation in SG)