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ITS#7961 fix txn init

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More fallout from 4d02c741b1
This commit is contained in:
Howard Chu 2014-10-04 21:48:49 +01:00 committed by Hallvard Furuseth
parent 042e76685e
commit ce40f4f314
1 changed files with 10 additions and 9 deletions
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19
libraries/liblmdb/mdb.c
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@ -2472,11 +2472,10 @@ mdb_txn_renew0(MDB_txn *txn)
uint16_t x;
int rc, new_notls = 0;
/* Setup db info */
txn->mt_numdbs = env->me_numdbs;
txn->mt_dbxs = env->me_dbxs; /* mostly static anyway */
if (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 (!ti) {
meta = env->me_metas[ mdb_env_pick_meta(env) ];
txn->mt_txnid = meta->mm_txnid;
@ -2536,6 +2535,8 @@ mdb_txn_renew0(MDB_txn *txn)
meta = env->me_metas[ mdb_env_pick_meta(env) ];
txn->mt_txnid = meta->mm_txnid;
}
/* Setup db info */
txn->mt_numdbs = env->me_numdbs;
txn->mt_txnid++;
#if MDB_DEBUG
if (txn->mt_txnid == mdb_debug_start)
@ -2622,18 +2623,17 @@ mdb_txn_begin(MDB_env *env, MDB_txn *parent, unsigned int flags, MDB_txn **ret)
}
tsize = sizeof(MDB_ntxn);
}
size = tsize + env->me_maxdbs * (sizeof(MDB_db)+1);
size = tsize;
if (!(flags & MDB_RDONLY)) {
if (!parent) {
txn = env->me_txn0;
txn = env->me_txn0; /* just reuse preallocated write txn */
txn->mt_flags = 0;
goto ok;
}
/* child txns use own copy of cursors */
size += env->me_maxdbs * sizeof(MDB_cursor *);
/* child txns use parent's dbiseqs */
if (!parent)
size += env->me_maxdbs * sizeof(unsigned int);
}
size += env->me_maxdbs * (sizeof(MDB_db)+1);
if ((txn = calloc(1, size)) == NULL) {
DPRINTF(("calloc: %s", strerror(errno)));
@ -4530,6 +4530,7 @@ mdb_env_open(MDB_env *env, const char *path, unsigned int flags, mdb_mode_t mode
txn->mt_dbiseqs = (unsigned int *)(txn->mt_cursors + env->me_maxdbs);
txn->mt_dbflags = (unsigned char *)(txn->mt_dbiseqs + env->me_maxdbs);
txn->mt_env = env;
txn->mt_dbxs = env->me_dbxs;
env->me_txn0 = txn;
} else {
rc = ENOMEM;