A
lgorithmique
N
umérique
D
istribuée
Public GIT Repository
projects
/
simgrid.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
MC: switch to xxhash as a (fast) hashing function.
[simgrid.git]
/
src
/
mc
/
sosp
/
PageStore.cpp
diff --git
a/src/mc/sosp/PageStore.cpp
b/src/mc/sosp/PageStore.cpp
index
bc10291
..
21a9ea2
100644
(file)
--- a/
src/mc/sosp/PageStore.cpp
+++ b/
src/mc/sosp/PageStore.cpp
@@
-3,23
+3,21
@@
/* 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. */
/* 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 <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 "xbt/log.h"
#include "xbt/sysdep.h"
-#include "src/in
ternal_config.h
"
-
+#include "src/in
clude/xxhash.hpp
"
+#include "src/mc/mc_mmu.hpp"
#include "src/mc/sosp/PageStore.hpp"
#include "src/mc/sosp/PageStore.hpp"
-#include "src/mc/mc_mmu.hpp"
+#include <cstring> // memcpy, memcmp
+#include <unistd.h>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_page_snapshot, mc, "Logging specific to mc_page_snapshot");
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_page_snapshot, mc, "Logging specific to mc_page_snapshot");
@@
-36,14
+34,7
@@
namespace mc {
*/
static XBT_ALWAYS_INLINE PageStore::hash_type mc_hash_page(const void* data)
{
*/
static XBT_ALWAYS_INLINE PageStore::hash_type mc_hash_page(const void* data)
{
- 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;
+ return xxh::xxhash<64>(data, xbt_pagesize);
}
// ***** snapshot_page_manager
}
// ***** snapshot_page_manager