-/* Copyright (c) 2015-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2015-2019. 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. */
-#include <cstring> // memcpy, memcmp
-#include <unistd.h>
-
#include <sys/mman.h>
#ifdef __FreeBSD__
#define MAP_POPULATE MAP_PREFAULT_READ
#endif
-#include "xbt/base.h"
+#include "src/internal_config.h"
#include "xbt/log.h"
#include "xbt/sysdep.h"
-#include "src/internal_config.h"
-
-#include "src/mc/sosp/PageStore.hpp"
-
+#ifdef SG_HAVE_CPP14
+#include "src/include/xxhash.hpp"
+#endif
#include "src/mc/mc_mmu.hpp"
+#include "src/mc/sosp/PageStore.hpp"
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_page_snapshot, mc, "Logging specific to mc_page_snapshot");
+#include <cstring> // memcpy, memcmp
+#include <unistd.h>
namespace simgrid {
namespace mc {
*/
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);
for (std::size_t i = 0; i != n; ++i)
hash = ((hash << 5) + hash) + values[i];
return hash;
+#endif
}
// ***** snapshot_page_manager
// Check if expanding worked
if (new_memory != (char*)this->memory_ + old_bytesize) {
// New memory segment could not be put at the end of this->memory_,
- // so cancel this one and try to rellocate everything and copy data
+ // so cancel this one and try to relocate everything and copy data
munmap(new_memory, new_bytesize - old_bytesize);
new_memory =
mmap(nullptr, new_bytesize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, -1, 0);