-/* Copyright (c) 2015-2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2015-2021. 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 "xbt/log.h"
#include "xbt/sysdep.h"
-#ifdef SG_HAVE_CPP14
#include "src/include/xxhash.hpp"
-#endif
#include "src/mc/mc_mmu.hpp"
#include "src/mc/sosp/PageStore.hpp"
*/
static XBT_ALWAYS_INLINE PageStore::hash_type mc_hash_page(const void* data)
{
-#ifdef SG_HAVE_CPP14
return xxh::xxhash<64>(data, xbt_pagesize);
-#else
- const std::uint64_t* values = (const uint64_t*)data;
- std::size_t n = xbt_pagesize / sizeof(uint64_t);
-
- // This djb2:
- std::uint64_t hash = 5381;
- for (std::size_t i = 0; i != n; ++i)
- hash = ((hash << 5) + hash) + values[i];
- return hash;
-#endif
}
// ***** snapshot_page_manager