-#ifndef XBT_ALWAYS_INLINE
-#define XBT_ALWAYS_INLINE inline __attribute__((always_inline))
-#endif
-
-/** Cache the size of a memory page for the current system. */
-extern "C" int xbt_pagesize;
-/** Cache the number of bits of addresses inside a given page, log2(xbt_pagesize). */
-extern "C" int xbt_pagebits;
-
-namespace simgrid {
-namespace mc {