-/* Copyright (c) 2014. The SimGrid Team.
+/* Copyright (c) 2014-2015. 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. */
-#ifndef MC_MMU_H
-#define MC_MMU_H
+#ifndef SIMGRID_MC_MMU_H
+#define SIMGRID_MC_MMU_H
#include <stdint.h>
#include <stdbool.h>
+#include <xbt/asserts.h>
+#include <xbt/misc.h>
+
#include <simgrid_config.h>
SG_BEGIN_DECL()
-extern int xbt_pagesize;
-extern int xbt_pagebits;
-
/** @brief How many memory pages are necessary to store size bytes?
*
* @param size Byte size
* @return Virtual memory page number of the given address
*/
static inline __attribute__ ((always_inline))
-size_t mc_page_number(void* base, void* address)
+size_t mc_page_number(const void* base, const void* address)
{
xbt_assert(address>=base, "The address is not in the range");
return ((uintptr_t) address - (uintptr_t) base) >> xbt_pagebits;
* @return Offset within the memory page
*/
static inline __attribute__ ((always_inline))
-size_t mc_page_offset(void* address)
+size_t mc_page_offset(const void* address)
{
return ((uintptr_t) address) & (xbt_pagesize-1);
}
* @param page Index of the page
*/
static inline __attribute__ ((always_inline))
-void* mc_page_from_number(void* base, size_t page)
+void* mc_page_from_number(const void* base, size_t page)
{
return (void*) ((char*)base + (page << xbt_pagebits));
}
static inline __attribute__ ((always_inline))
-bool mc_same_page(void* a, void* b)
+bool mc_same_page(const void* a, const void* b)
{
return ((uintptr_t) a >> xbt_pagebits) == ((uintptr_t) b >> xbt_pagebits);
}