ISAR/libmdbx
3
0
Fork 0
mirror of https://github.com/isar/libmdbx.git synced 2025-01-04 18:14:12 +08:00
Code Issues Packages Projects Releases Wiki Activity

mdbx: rework mapsize's stuff inside mdbx_setup_dxb().

Browse Source
This commit is contained in:
Leo Yuriev 2017-05-25 08:57:58 +03:00
parent aa9aa79e11
commit c335b16c81
1 changed files with 49 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

90
src/mdbx.c
View File

@ -3683,61 +3683,55 @@ static int __cold mdbx_setup_dxb(MDBX_env *env, MDBX_meta *meta, int lck_rc) {
mdbx_debug("create new database");
rc = /* new database */ MDBX_RESULT_TRUE;
env->me_psize = env->me_os_psize;
if (!env->me_psize)
env->me_psize = env->me_os_psize;
if (env->me_psize > MAX_PAGESIZE)
env->me_psize = MAX_PAGESIZE;
env->me_mapsize = roundup2(
env->me_mapsize ? env->me_mapsize : DEFAULT_MAPSIZE, env->me_os_psize);
mdbx_meta_model(env, meta);
meta->mm_mapsize = DEFAULT_MAPSIZE;
} else {
env->me_psize = meta->mm_psize;
}
/* Was a mapsize configured? */
if (!env->me_mapsize)
env->me_mapsize = meta->mm_mapsize;
else {
/* Make sure mapsize >= committed data size. Even when using
* mm_mapsize, which could be broken in old files (ITS#7789). */
size_t usedsize = (meta->mm_last_pg + 1) * meta->mm_psize;
if (env->me_mapsize < usedsize)
env->me_mapsize = usedsize;
meta->mm_mapsize = env->me_mapsize;
}
if (rc == MDBX_RESULT_TRUE) {
/* mdbx_env_map() may grow the datafile. Write the metapages
* first, so the file will be valid if initialization fails. */
err = mdbx_env_init_metas(env, meta);
if (unlikely(err != MDBX_SUCCESS))
return err;
} else {
env->me_psize = meta->mm_psize;
/* Make sure mapsize >= committed data size. Even when using
* mm_mapsize, which could be broken in old files (ITS#7789). */
const size_t usedsize =
roundup2((meta->mm_last_pg + 1) * meta->mm_psize, env->me_os_psize);
if (meta->mm_mapsize < usedsize)
meta->mm_mapsize = usedsize;
/* Was a mapsize configured? */
if (!env->me_mapsize || (env->me_flags & MDBX_RDONLY) ||
lck_rc != /* lck exclusive */ MDBX_RESULT_TRUE)
env->me_mapsize = meta->mm_mapsize;
else if (env->me_mapsize < usedsize)
env->me_mapsize = usedsize;
}
uint64_t size;
err = mdbx_filesize(env->me_fd, &size);
if (unlikely(err != MDBX_SUCCESS))
return err;
if (size != env->me_mapsize) {
mdbx_trace("filesize mismatch");
if ((env->me_flags & MDBX_RDONLY) ||
lck_rc != /* lck exclusive */ MDBX_RESULT_TRUE)
return MDBX_WANNA_RECOVERY /* LY: could not mdbx_ftruncate */;
err = mdbx_ftruncate(env->me_fd, env->me_mapsize);
if (unlikely(err != MDBX_SUCCESS))
return err;
} else {
uint64_t size;
err = mdbx_filesize(env->me_fd, &size);
if (unlikely(err != MDBX_SUCCESS))
return err;
if (size != env->me_mapsize) {
mdbx_trace("filesize mismatch");
if ((env->me_flags & MDBX_RDONLY) ||
lck_rc != /* lck exclusive */ MDBX_RESULT_TRUE)
return MDBX_WANNA_RECOVERY /* LY: could not mdbx_ftruncate */;
err = mdbx_ftruncate(env->me_fd, env->me_mapsize);
if (unlikely(err != MDBX_SUCCESS))
return err;
}
}
err = mdbx_env_map(env, NULL, env->me_mapsize);
if (err)
return err;
MDBX_meta *const head = mdbx_meta_head(env);
const MDBX_meta *head = mdbx_meta_head(env);
if (head->mm_txnid != meta->mm_txnid) {
mdbx_trace("head->mm_txnid (%" PRIaTXN ") != (%" PRIaTXN ") meta->mm_txnid",
head->mm_txnid, meta->mm_txnid);
@ -3751,8 +3745,6 @@ static int __cold mdbx_setup_dxb(MDBX_env *env, MDBX_meta *meta, int lck_rc) {
/* LY: rollback weak checkpoint */
MDBX_meta rollback = *head;
rollback.mm_txnid = 0;
if (rollback.mm_txnid == meta->mm_txnid)
rollback = *meta;
err = mdbx_pwrite(env->me_fd, &rollback, sizeof(MDBX_meta),
(uint8_t *)head - (uint8_t *)env->me_map);
if (err)
@ -3769,6 +3761,22 @@ static int __cold mdbx_setup_dxb(MDBX_env *env, MDBX_meta *meta, int lck_rc) {
}
}
head = mdbx_meta_head(env);
if (head->mm_mapsize != env->me_mapsize) {
mdbx_trace("head->mm_mapsize (%" PRIu64 ") != (%" PRIu64
") env->mm_mapsize",
head->mm_mapsize, env->me_mapsize);
if ((env->me_flags & MDBX_RDONLY) ||
lck_rc != /* lck exclusive */ MDBX_RESULT_TRUE)
return MDBX_MAP_RESIZED;
*meta = *head;
meta->mm_mapsize = env->me_mapsize;
err = mdbx_env_sync_locked(env, env->me_flags & MDBX_WRITEMAP, meta);
if (err)
return err;
}
mdbx_env_setup_limits(env, env->me_psize);
return rc;
}