/** @brief Storage for snapshot memory pages
*
- * The first (lower) layer of the per-page snapshot mechanism is a page
- * store: it's responsibility is to store immutable shareable
- * reference-counted memory pages independently of the snapshoting
- * logic. Snapshot management and representation, soft-dirty tracking is
- * handled to an higher layer. READMORE
+ * The first (lower) layer of the per-page snapshot mechanism is a page store:
+ * its responsibility is to store immutable sharable reference-counted memory
+ * pages independently of the snapshotting logic. Snapshot management and
+ * representation is handled to an higher layer. READMORE
*
* Data structure:
*
/** @brief Decrement the reference count for a given page
*
- * Decrement the reference count of this page. Used when a snapshot is
- * destroyed.
+ * Decrement the reference count of this page. Used when a snapshot is destroyed.
*
* If the reference count reaches zero, the page is recycled:
* it is added to the `free_pages_` list and removed from the `hash_index_`.
/** @brief Get a page from its page number
*
- * @param Number of the memory page in the store
+ * @param pageno Number of the memory page in the store
* @return Start of the page
*/
const void* get_page(std::size_t pageno) const;
inline __attribute__((always_inline))
const void* PageStore::get_page(std::size_t pageno) const
{
- return mc_page_from_number(this->memory_, pageno);
+ return (void*) simgrid::mc::mmu::join(pageno, (std::uintptr_t) this->memory_);
}
inline __attribute__((always_inline))