X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/29a3b2869c0075fc75e8ccc66fc1d9c4c8bf6a85..130f51aeb55bd3bf2706c1f5b09ca59fa291c087:/src/mc/mc_mmu.hpp diff --git a/src/mc/mc_mmu.hpp b/src/mc/mc_mmu.hpp index bb4d900e9f..bbeedf1e7d 100644 --- a/src/mc/mc_mmu.hpp +++ b/src/mc/mc_mmu.hpp @@ -1,4 +1,4 @@ -/* Copyright (c) 2014-2018. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2014-2023. 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. */ @@ -6,36 +6,21 @@ #ifndef SIMGRID_MC_MMU_HPP #define SIMGRID_MC_MMU_HPP +#include "xbt/misc.h" #include #include -#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 { +namespace simgrid::mc::mmu { // TODO, do not depend on xbt_pagesize/xbt_pagebits but our own chunk size -namespace mmu { - -static int chunkSize() -{ - return xbt_pagesize; -} /** @brief How many memory pages are necessary to store size bytes? * * @param size Byte size * @return Number of memory pages */ -static XBT_ALWAYS_INLINE std::size_t chunkCount(std::size_t size) +static XBT_ALWAYS_INLINE std::size_t chunk_count(std::size_t size) { - size_t page_count = size >> xbt_pagebits; + std::size_t page_count = size >> xbt_pagebits; if (size & (xbt_pagesize - 1)) page_count++; return page_count; @@ -47,7 +32,7 @@ static XBT_ALWAYS_INLINE std::pair split(std::uintp return {offset >> xbt_pagebits, offset & (xbt_pagesize - 1)}; } -/** Merge chunk number and remaining offset info a global offset */ +/** Merge chunk number and remaining offset into a global offset */ static XBT_ALWAYS_INLINE std::uintptr_t join(std::size_t page, std::uintptr_t offset) { return ((std::uintptr_t)page << xbt_pagebits) + offset; @@ -58,12 +43,10 @@ static XBT_ALWAYS_INLINE std::uintptr_t join(std::pair> xbt_pagebits) == (b >> xbt_pagebits); } -} -} -} +} // namespace simgrid::mc::mmu #endif