+++ /dev/null
-/* 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. */
-
-#include "src/3rd-party/catch.hpp"
-
-#include <array>
-#include <cstdint>
-#include <cstring>
-#include <iostream>
-
-#include <sys/mman.h>
-#include <unistd.h>
-
-#include <memory>
-
-#include "src/mc/sosp/PageStore.hpp"
-
-/***********************************/
-// a class to hold the variable used in the test cases
-class pstore_test_helper {
- const size_t pagesize = getpagesize();
- simgrid::mc::PageStore store{50};
- std::byte* data =
- static_cast<std::byte*>(mmap(nullptr, pagesize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
- std::array<size_t, 4> pageno = {0, 0, 0, 0};
- int value = 0;
-
- void new_content(std::byte* buf, size_t size);
-
-public:
- // member functions used by the test suite(s)
- void init();
- void store_page_once();
- void store_same_page();
- void store_new_page();
- void unref_pages();
- void reallocate_page();
-};
-
-void pstore_test_helper::init()
-{
- REQUIRE(data != nullptr);
- REQUIRE(store.size() == 0);
-}
-
-void pstore_test_helper::store_page_once()
-{
- new_content(data, pagesize);
- pageno[0] = store.store_page(data);
- REQUIRE(store.get_ref(pageno[0]) == 1);
- const auto* copy = store.get_page(pageno[0]);
- REQUIRE(::memcmp(data, copy, pagesize) == 0); // The page data should be the same
- REQUIRE(store.size() == 1);
-}
-
-void pstore_test_helper::store_same_page()
-{
- pageno[1] = store.store_page(data);
- REQUIRE(pageno[0] == pageno[1]); // Page should be the same
- REQUIRE(store.get_ref(pageno[0]) == 2);
- REQUIRE(store.size() == 1);
-}
-
-void pstore_test_helper::store_new_page()
-{
- new_content(data, pagesize);
- pageno[2] = store.store_page(data);
- REQUIRE(pageno[0] != pageno[2]); // The new page should be different
- REQUIRE(store.size() == 2);
-}
-
-void pstore_test_helper::unref_pages()
-{
- store.unref_page(pageno[0]);
- REQUIRE(store.get_ref(pageno[0]) == 1);
- REQUIRE(store.size() == 2);
-
- store.unref_page(pageno[1]);
- REQUIRE(store.size() == 1);
-}
-
-void pstore_test_helper::reallocate_page()
-{
- new_content(data, pagesize);
- pageno[3] = store.store_page(data);
- REQUIRE(pageno[0] == pageno[3]); // The old page should be reused
- REQUIRE(store.get_ref(pageno[3]) == 1);
- REQUIRE(store.size() == 2);
-}
-
-void pstore_test_helper::new_content(std::byte* buf, size_t size)
-{
- value++;
- std::fill_n(buf, size, static_cast<std::byte>(value));
-}
-
-TEST_CASE("MC page store, used during checkpoint", "MC::PageStore")
-{
- pstore_test_helper pstore_test;
- pstore_test.init();
-
- INFO("Store page once");
- pstore_test.store_page_once();
-
- INFO("Store the same page");
- pstore_test.store_same_page();
-
- INFO("Store a new page");
- pstore_test.store_new_page();
-
- INFO("Unref pages");
- pstore_test.unref_pages();
-
- INFO("Reallocate pages");
- pstore_test.reallocate_page();
-}