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ITS#9118 add MAP_NOSYNC for FreeBSD

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This commit is contained in:
Howard Chu 2019-11-15 16:06:34 +00:00
parent c3e6b4209e
commit 522c62035c
1 changed files with 8 additions and 3 deletions
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11
libraries/liblmdb/mdb.c
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@ -4396,22 +4396,27 @@ mdb_env_map(MDB_env *env, void *addr)
return mdb_nt2win32(rc);
env->me_map = map;
#else
int mmap_flags = MAP_SHARED;
int prot = PROT_READ;
#ifdef MAP_NOSYNC /* Used on FreeBSD */
if (flags & MDB_NOSYNC)
mmap_flags |= MAP_NOSYNC;
#endif
#ifdef MDB_VL32
(void) flags;
env->me_map = mmap(addr, NUM_METAS * env->me_psize, PROT_READ, MAP_SHARED,
env->me_map = mmap(addr, NUM_METAS * env->me_psize, prot, mmap_flags,
env->me_fd, 0);
if (env->me_map == MAP_FAILED) {
env->me_map = NULL;
return ErrCode();
}
#else
int prot = PROT_READ;
if (flags & MDB_WRITEMAP) {
prot |= PROT_WRITE;
if (ftruncate(env->me_fd, env->me_mapsize) < 0)
return ErrCode();
}
env->me_map = mmap(addr, env->me_mapsize, prot, MAP_SHARED,
env->me_map = mmap(addr, env->me_mapsize, prot, mmap_flags,
env->me_fd, 0);
if (env->me_map == MAP_FAILED) {
env->me_map = NULL;