--- /dev/null
+/* Copyright (c) 2007-2018. 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. */
+
+#include <cstddef>
+#include <cstdint>
+
+#include <vector>
+
+#include "xbt/asserts.h"
+#include "xbt/misc.h"
+
+#include "src/mc/AddressSpace.hpp"
+#include "src/mc/sosp/ChunkedData.hpp"
+#include "src/mc/sosp/PageStore.hpp"
+
+namespace simgrid {
+namespace mc {
+
+/** Take a per-page snapshot of a region
+ *
+ * @param addr The start of the region (must be at the beginning of a page)
+ * @param page_count Number of pages of the region
+ * @return Snapshot page numbers of this new snapshot
+ */
+ChunkedData::ChunkedData(PageStore& store, AddressSpace& as, RemotePtr<void> addr, std::size_t page_count)
+{
+ store_ = &store;
+ this->pagenos_.resize(page_count);
+ std::vector<char> buffer(xbt_pagesize);
+
+ for (size_t i = 0; i != page_count; ++i) {
+
+ RemotePtr<void> page = remote((void*)simgrid::mc::mmu::join(i, addr.address()));
+ xbt_assert(simgrid::mc::mmu::split(page.address()).second == 0, "Not at the beginning of a page");
+
+ /* Adding another copy (and a syscall) will probably slow things a lot.
+ TODO, optimize this somehow (at least by grouping the syscalls)
+ if needed. Either:
+ - reduce the number of syscalls
+ - let the application snapshot itself
+ - move the segments in shared memory (this will break `fork` however)
+ */
+
+ as.read_bytes(buffer.data(), xbt_pagesize, page, simgrid::mc::ProcessIndexDisabled);
+
+ pagenos_[i] = store_->store_page(buffer.data());
+ }
+}
+
+} // namespace mc
+} // namespace simgrid
