-/* Copyright (c) 2015-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2015-2023. 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. */
#define XBT_ALWAYS_INLINE inline __attribute__((always_inline))
#endif
-namespace simgrid {
-namespace mc {
+namespace simgrid::mc {
/** @brief Storage for snapshot memory pages
*
* The first (lower) layer of the per-page snapshot mechanism is a page store:
- * its responsibility is to store immutable sharable reference-counted memory
+ * its responsibility is to store immutable shareable reference-counted memory
* pages independently of the snapshotting logic. Snapshot management and
* representation is handled to an higher layer. READMORE
*
*/
class PageStore {
public: // Types
- typedef std::uint64_t hash_type;
+ using hash_type = std::uint64_t;
private:
// Types
// We are using a cheap hash to index a page.
// We should expect collision and we need to associate multiple page indices
// to the same hash.
- typedef std::unordered_set<std::size_t> page_set_type;
- typedef std::unordered_map<hash_type, page_set_type> pages_map_type;
+ using page_set_type = std::unordered_set<std::size_t>;
+ using pages_map_type = std::unordered_map<hash_type, page_set_type>;
// Fields:
/** First page */
// Debug/test methods
/** @brief Get the number of references for a page */
- std::size_t get_ref(std::size_t pageno);
+ std::size_t get_ref(std::size_t pageno) const;
/** @brief Get the number of used pages */
- std::size_t size();
+ std::size_t size() const;
/** @brief Get the capacity of the page store
*
* The capacity is expanded by a system call (mremap).
* */
- std::size_t capacity();
+ std::size_t capacity() const;
};
XBT_ALWAYS_INLINE void PageStore::unref_page(std::size_t pageno)
return (void*)simgrid::mc::mmu::join(pageno, (std::uintptr_t)this->memory_);
}
-XBT_ALWAYS_INLINE std::size_t PageStore::get_ref(std::size_t pageno)
+XBT_ALWAYS_INLINE std::size_t PageStore::get_ref(std::size_t pageno) const
{
return this->page_counts_[pageno];
}
-XBT_ALWAYS_INLINE std::size_t PageStore::size()
+XBT_ALWAYS_INLINE std::size_t PageStore::size() const
{
return this->top_index_ - this->free_pages_.size();
}
-XBT_ALWAYS_INLINE std::size_t PageStore::capacity()
+XBT_ALWAYS_INLINE std::size_t PageStore::capacity() const
{
return this->capacity_;
}
-} // namespace mc
-} // namespace simgrid
+} // namespace simgrid::mc
#endif