+++ /dev/null
-/* Copyright (c) 2014-2019. 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 SIMGRID_MC_CHUNKED_DATA_HPP
-#define SIMGRID_MC_CHUNKED_DATA_HPP
-
-#include <cstddef>
-#include <cstdint>
-
-#include <utility>
-#include <vector>
-
-#include "src/mc/mc_forward.hpp"
-#include "src/mc/sosp/PageStore.hpp"
-
-namespace simgrid {
-namespace mc {
-
-/** A byte-string represented as a sequence of chunks from a PageStore
- *
- * In order to save memory when taking memory snapshots, a given byte-string
- * is split in fixed-size chunks. Identical chunks (either from the same
- * snapshot or more probably from different snpashots) share the same memory
- * storage.
- *
- * Thus a chunked is represented as a sequence of indices of each chunk.
- */
-class ChunkedData {
- /** This is where we store the chunks */
- PageStore* store_ = nullptr;
- /** Indices of the chunks in the `PageStore` */
- std::vector<std::size_t> pagenos_;
-
-public:
- ChunkedData() = default;
- void clear()
- {
- for (std::size_t const& pageno : pagenos_)
- store_->unref_page(pageno);
- pagenos_.clear();
- }
- ~ChunkedData() { clear(); }
-
- // Copy and move
- ChunkedData(ChunkedData const& that) : store_(that.store_), pagenos_(that.pagenos_)
- {
- for (std::size_t const& pageno : pagenos_)
- store_->ref_page(pageno);
- }
- ChunkedData(ChunkedData&& that) : store_(that.store_), pagenos_(std::move(that.pagenos_))
- {
- that.store_ = nullptr;
- that.pagenos_.clear();
- }
- ChunkedData& operator=(ChunkedData const& that)
- {
- if (this != &that) {
- this->clear();
- store_ = that.store_;
- pagenos_ = that.pagenos_;
- for (std::size_t const& pageno : pagenos_)
- store_->ref_page(pageno);
- }
- return *this;
- }
- ChunkedData& operator=(ChunkedData&& that)
- {
- this->clear();
- store_ = that.store_;
- that.store_ = nullptr;
- pagenos_ = std::move(that.pagenos_);
- that.pagenos_.clear();
- return *this;
- }
-
- /** How many pages are used */
- std::size_t page_count() const { return pagenos_.size(); }
-
- /** Get a chunk index */
- std::size_t pageno(std::size_t i) const { return pagenos_[i]; }
-
- /** Get a view of the chunk indices */
- const std::size_t* pagenos() const { return pagenos_.data(); }
-
- /** Get a a pointer to a chunk */
- const void* page(std::size_t i) const { return store_->get_page(pagenos_[i]); }
-
- ChunkedData(PageStore& store, AddressSpace& as, RemotePtr<void> addr, std::size_t page_count);
-};
-
-} // namespace mc
-} // namespace simgrid
-
-#endif
