ISAR/libmdbx
3
0
Fork 0
mirror of https://github.com/isar/libmdbx.git synced 2025-11-07 07:18:56 +08:00
Code Issues Packages Projects Releases Wiki Activity

mdbx: add MDBX_ENABLE_MADVISE build option/macro.

Browse Source 
Change-Id: I6174ec62e4811e891663b8ae0f7918aa09baf5ab
This commit is contained in:
Leonid Yuriev
2021-02-26 04:10:56 +03:00
parent ecc755881e
commit b164baa1f5
4 changed files with 44 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/osal.c
View File

@@ -1396,7 +1396,7 @@ MDBX_INTERNAL_FUNC int mdbx_mmap(const int flags, mdbx_mmap_t *map,
map->filesize = size;
#else
map->current = size;
#endif
#endif /* ! Windows */
} else {
uint64_t filesize = 0;
err = mdbx_filesize(map->fd, &filesize);
@@ -1406,7 +1406,7 @@ MDBX_INTERNAL_FUNC int mdbx_mmap(const int flags, mdbx_mmap_t *map,
map->filesize = filesize;
#else
map->current = (filesize > limit) ? limit : (size_t)filesize;
#endif
#endif /* ! Windows */
}
#if defined(_WIN32) || defined(_WIN64)
@@ -1448,7 +1448,7 @@ MDBX_INTERNAL_FUNC int mdbx_mmap(const int flags, mdbx_mmap_t *map,
map->current = (size_t)SectionSize.QuadPart;
map->limit = ViewSize;
#else
#else /* Windows */
#ifndef MAP_TRYFIXED
#define MAP_TRYFIXED 0
@@ -1482,15 +1482,17 @@ MDBX_INTERNAL_FUNC int mdbx_mmap(const int flags, mdbx_mmap_t *map,
}
map->limit = limit;
#if MDBX_ENABLE_MADVISE
#ifdef MADV_DONTFORK
if (unlikely(madvise(map->address, map->limit, MADV_DONTFORK) != 0))
return errno;
#endif
#endif /* MADV_DONTFORK */
#ifdef MADV_NOHUGEPAGE
(void)madvise(map->address, map->limit, MADV_NOHUGEPAGE);
#endif
#endif /* MADV_NOHUGEPAGE */
#endif /* MDBX_ENABLE_MADVISE */
#endif
#endif /* ! Windows */
VALGRIND_MAKE_MEM_DEFINED(map->address, map->current);
ASAN_UNPOISON_MEMORY_REGION(map->address, map->current);
@@ -1512,7 +1514,7 @@ MDBX_INTERNAL_FUNC int mdbx_munmap(mdbx_mmap_t *map) {
#else
if (unlikely(munmap(map->address, map->limit)))
return errno;
#endif
#endif /* ! Windows */
map->limit = 0;
map->current = 0;
@@ -1683,7 +1685,7 @@ retry_mapview:;
map->current = (size_t)SectionSize.QuadPart;
map->limit = ViewSize;
#else
#else /* Windows */
uint64_t filesize = 0;
int rc = mdbx_filesize(map->fd, &filesize);
@@ -1814,14 +1816,15 @@ retry_mapview:;
}
map->limit = limit;
#if MDBX_ENABLE_MADVISE
#ifdef MADV_DONTFORK
if (unlikely(madvise(map->address, map->limit, MADV_DONTFORK) != 0))
return errno;
#endif /* MADV_DONTFORK */
#ifdef MADV_NOHUGEPAGE
(void)madvise(map->address, map->limit, MADV_NOHUGEPAGE);
#endif /* MADV_NOHUGEPAGE */
#endif /* MDBX_ENABLE_MADVISE */
#endif /* POSIX / Windows */