ISAR/libmdbx
3
0
Fork 0
mirror of https://github.com/isar/libmdbx.git synced 2025-10-31 03:29:01 +08:00
Code Issues Packages Projects Releases Wiki Activity

lmdb: ITS#8157 mdb_txn_renew0(): init after error checks.

Browse Source 
Change-Id: I9ea344b98cb8c99a25ba7087abefbfe62b3417a0
This commit is contained in:
Hallvard Furuseth
2015-05-28 15:53:19 +03:00
committed by Leo Yuriev
parent bb7b923fdd
commit 55ae3dfa8b
2 changed files with 8 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
mdb.c
View File

@@ -2705,16 +2705,11 @@ mdb_txn_renew0(MDB_txn *txn)
{
MDB_env *env = txn->mt_env;
MDB_meta *meta;
unsigned i, nr;
unsigned i, nr, flags = txn->mt_flags;
uint16_t x;
int rc, new_notls = 0;
txn->mt_flags &= MDB_TXN_BEGIN_FLAGS;
if (txn->mt_flags & MDB_TXN_RDONLY) {
txn->mt_flags = MDB_TXN_RDONLY;
/* Setup db info */
txn->mt_numdbs = env->me_numdbs;
txn->mt_dbxs = env->me_dbxs; /* mostly static anyway */
if ((flags &= MDB_TXN_RDONLY) != 0) {
MDB_reader *r = (env->me_flags & MDB_NOTLS)
? txn->mt_u.reader : pthread_getspecific(env->me_txkey);
@@ -2781,6 +2776,7 @@ mdb_txn_renew0(MDB_txn *txn)
txn->mt_txnid = r->mr_txnid;
txn->mt_u.reader = r;
txn->mt_dbxs = env->me_dbxs; /* mostly static anyway */
} else {
/* Not yet touching txn == env->me_txn0, it may be active */
rc = mdb_mutex_lock(env, MDB_MUTEX(env, w));
@@ -2790,8 +2786,6 @@ mdb_txn_renew0(MDB_txn *txn)
meta = mdb_meta_head_w(env);
txn->mt_txnid = meta->mm_txnid;
/* Setup db info */
txn->mt_numdbs = env->me_numdbs;
txn->mt_txnid++;
#if MDB_DEBUG
if (unlikely(txn->mt_txnid == mdb_debug_edge)) {
@@ -2802,7 +2796,6 @@ mdb_txn_renew0(MDB_txn *txn)
"on/off edge (txn %zu)", txn->mt_txnid);
}
#endif
txn->mt_flags = 0;
txn->mt_child = NULL;
txn->mt_loose_pgs = NULL;
txn->mt_loose_count = 0;
@@ -2820,6 +2813,10 @@ mdb_txn_renew0(MDB_txn *txn)
txn->mt_next_pgno = meta->mm_last_pg+1;
}
txn->mt_flags = flags;
/* Setup db info */
txn->mt_numdbs = env->me_numdbs;
for (i=2; i<txn->mt_numdbs; i++) {
x = env->me_dbflags[i];
txn->mt_dbs[i].md_flags = x & PERSISTENT_FLAGS;