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authorFlavioJS <FlavioJS@54d463be-8e91-2dee-dedb-b68131a5f0ec>2008-02-19 16:02:16 +0000
committerFlavioJS <FlavioJS@54d463be-8e91-2dee-dedb-b68131a5f0ec>2008-02-19 16:02:16 +0000
commit76060b9b386d8834ff796a8df2eaa0bb0a497fff (patch)
treee434250e7a013a40084dc2803c333c5a4a1cf394 /src/common
parent7809da5abc894e1b25b8010294ef7c97747754b3 (diff)
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* Fixed db_obj_get not handling deleted nodes correctly. (bugreport:999)
git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@12217 54d463be-8e91-2dee-dedb-b68131a5f0ec
Diffstat (limited to 'src/common')
-rw-r--r--src/common/db.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/src/common/db.c b/src/common/db.c
index 712b3ec7e..77d3b7b2e 100644
--- a/src/common/db.c
+++ b/src/common/db.c
@@ -48,12 +48,12 @@
* - create a db that organizes itself by splaying
*
* HISTORY:
+ * 2008/02/19 - Fixed db_obj_get not handling deleted entries correctly.
* 2007/11/09 - Added an iterator to the database.
* 2006/12/21 - Added 1-node cache to the database.
* 2.1 (Athena build #???#) - Portability fix
* - Fixed the portability of casting to union and added the functions
- * {@link DB#ensure(DB,DBKey,DBCreateData,...)} and
- * {@link DB#clear(DB,DBApply,...)}.
+ * ensure and clear to the database.
* 2.0 (Athena build 4859) - Transition version
* - Almost everything recoded with a strategy similar to objects,
* database structure is maintained.
@@ -627,7 +627,7 @@ static DBKey db_dup_key(DBMap_impl* db, DBKey key)
case DB_ISTRING:
if (db->maxlen) {
CREATE(str, char, db->maxlen +1);
- memcpy(str, key.str, db->maxlen);
+ strncpy(str, key.str, db->maxlen);
str[db->maxlen] = '\0';
key.str = str;
} else {
@@ -1282,7 +1282,7 @@ void* dbit_obj_prev(DBIterator* self, DBKey* out_key)
}
if( !node->deleted )
- {// found next entry
+ {// found previous entry
it->node = node;
if( out_key )
memcpy(out_key, &node->key, sizeof(DBKey));
@@ -1413,15 +1413,25 @@ static void* db_obj_get(DBMap* self, DBKey key)
return NULL; // nullpo candidate
}
- if (db->cache && db->cmp(key, db->cache->key, db->maxlen) == 0)
+ if (db->cache && db->cmp(key, db->cache->key, db->maxlen) == 0) {
+#if defined(DEBUG)
+ if (db->cache->deleted) {
+ ShowDebug("db_get: Cache contains a deleted node. Please report this!!!\n");
+ return NULL;
+ }
+#endif
return db->cache->data; // cache hit
+ }
db_free_lock(db);
node = db->ht[db->hash(key, db->maxlen)%HASH_SIZE];
while (node) {
c = db->cmp(key, node->key, db->maxlen);
if (c == 0) {
- data = node->data;
+ if (!(node->deleted)) {
+ data = node->data;
+ db->cache = node;
+ }
break;
}
if (c < 0)
@@ -1429,7 +1439,6 @@ static void* db_obj_get(DBMap* self, DBKey key)
else
node = node->right;
}
- db->cache = node;
db_free_unlock(db);
return data;
}
@@ -1865,7 +1874,7 @@ static int db_obj_vforeach(DBMap* self, DBApply func, va_list args)
}
/**
- * Just calls {@link common\db.h\DB#vforeach(DB,DBApply,va_list)}.
+ * Just calls {@link DBMap#vforeach}.
* Apply <code>func</code> to every entry in the database.
* Returns the sum of values returned by func.
* @param self Interface of the database