return -1;
}
- tdb->num_locks++;
-
tdb->lockrecs[tdb->num_lockrecs].off = offset;
tdb->lockrecs[tdb->num_lockrecs].count = 1;
tdb->lockrecs[tdb->num_lockrecs].ltype = ltype;
- tdb->num_lockrecs += 1;
+ tdb->num_lockrecs++;
return 0;
}
} else {
ret = tdb->methods->brunlock(tdb, ltype, offset, 1);
}
- tdb->num_locks--;
/*
* Shrink the array by overwriting the element just unlocked with the
* last array element.
*/
-
- if (tdb->num_lockrecs > 1) {
- *lck = tdb->lockrecs[tdb->num_lockrecs-1];
- }
- tdb->num_lockrecs -= 1;
+ *lck = tdb->lockrecs[--tdb->num_lockrecs];
/*
* We don't bother with realloc when the array shrinks, but if we have
return true;
}
+ /* We always hold the active lock if CLEAR_IF_FIRST. */
+ if (find_nestlock(tdb, ACTIVE_LOCK)) {
+ extra--;
+ }
+
/* In a transaction, we expect to hold the transaction lock */
if (tdb->transaction && find_nestlock(tdb, TRANSACTION_LOCK)) {
extra--;
return extra;
}
-/* The transaction code uses this to remove all locks. */
+/* The transaction code uses this to remove all locks. Note that this
+ may include OPEN_LOCK. */
void tdb_release_extra_locks(struct tdb_context *tdb)
{
unsigned int i, extra = 0;
for (i=0;i<tdb->num_lockrecs;i++) {
struct tdb_lock_type *lck = &tdb->lockrecs[i];
+ /* Don't release transaction or active locks! */
if (tdb->transaction && lck->off == TRANSACTION_LOCK) {
tdb->lockrecs[extra++] = *lck;
+ } else if (lck->off == ACTIVE_LOCK) {
+ tdb->lockrecs[extra++] = *lck;
} else {
tdb_brunlock(tdb, lck->ltype, lck->off, 1);
}
}
- tdb->num_locks = extra;
tdb->num_lockrecs = extra;
if (tdb->num_lockrecs == 0) {
SAFE_FREE(tdb->lockrecs);