diff options
Diffstat (limited to 'lib/tdb/common/lock.c')
| -rw-r--r-- | lib/tdb/common/lock.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/lib/tdb/common/lock.c b/lib/tdb/common/lock.c index f156c0fa7b..2c72ae1f0d 100644 --- a/lib/tdb/common/lock.c +++ b/lib/tdb/common/lock.c @@ -301,16 +301,21 @@ int tdb_unlock(struct tdb_context *tdb, int list, int ltype) */ int tdb_transaction_lock(struct tdb_context *tdb, int ltype) { - if (tdb->have_transaction_lock || tdb->global_lock.count) { + if (tdb->global_lock.count) { + return 0; + } + if (tdb->transaction_lock_count > 0) { + tdb->transaction_lock_count++; return 0; } + if (tdb->methods->tdb_brlock(tdb, TRANSACTION_LOCK, ltype, F_SETLKW, 0, 1) == -1) { TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_transaction_lock: failed to get transaction lock\n")); tdb->ecode = TDB_ERR_LOCK; return -1; } - tdb->have_transaction_lock = 1; + tdb->transaction_lock_count++; return 0; } @@ -320,12 +325,16 @@ int tdb_transaction_lock(struct tdb_context *tdb, int ltype) int tdb_transaction_unlock(struct tdb_context *tdb) { int ret; - if (!tdb->have_transaction_lock) { + if (tdb->global_lock.count) { + return 0; + } + if (tdb->transaction_lock_count > 1) { + tdb->transaction_lock_count--; return 0; } ret = tdb->methods->tdb_brlock(tdb, TRANSACTION_LOCK, F_UNLCK, F_SETLKW, 0, 1); if (ret == 0) { - tdb->have_transaction_lock = 0; + tdb->transaction_lock_count = 0; } return ret; } |