@class NSString, NSMutableDictionary; @interface _SYSharedServiceDB : NSObject { struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _lock; struct sqlite3 { } *_db; NSString *_name; NSMutableDictionary *_schemaSetupCallbacks; } @property (readonly, nonatomic, getter=_dbPath) NSString *dbPath; + (id)sharedInstanceForServiceName:(id)a0; + (void)initialize; + (void)pairingStorePathWasReset; + (void)_releaseSharedInstanceForServiceName:(id)a0; - (BOOL)_LOCKED_ensureDBExists; - (void)dealloc; - (BOOL)_LOCKED_hasSchemaVersionForClient:(id)a0; - (long long)_LOCKED_getClientVersion:(id)a0; - (BOOL)inTransaction:(id /* block */)a0; - (void)setSchemaVersion:(long long)a0 forClient:(id)a1; - (id)initWithServiceName:(id)a0; - (void)_ensureSchemaVersionsTable; - (void)_LOCKED_setVersion:(long long)a0 forClient:(id)a1; - (void)updateSchemaForClient:(id)a0 usingBlock:(id /* block */)a1; - (void)withDBRef:(id /* block */)a0; - (void).cxx_destruct; - (BOOL)_addSkipBackupAttributeToItemAtPath:(id)a0 error:(id *)a1; - (void)_LOCKED_ensureSchemaVersionsTableInDB:(struct sqlite3 { } *)a0; - (BOOL)inExclusiveTransaction:(id /* block */)a0; - (BOOL)_ensureParentExists:(id)a0 error:(id *)a1; - (BOOL)_LOCKED_createOrOpenDBForServiceName:(id)a0 error:(id *)a1; - (BOOL)_runTransactionBlock:(id /* block */)a0 exclusive:(BOOL)a1; - (void)_LOCKED_runSchemaUpdate:(id /* block */)a0 forClientNamed:(id)a1; - (long long)schemaVersionForClient:(id)a0; @end