An indexer object destructor function frees memory that was allocated for an indexer object set up by the indexer factory function. Directory Server calls the destructor after an index operation completes.
Indexer object destructors take a parameter block as their only argument, as do filter object destructors. The parameter block holds a pointer to the object in SLAPI_PLUGIN_OBJECT. Refer to the Filter Object Destructor Function for details.
Directory Server never calls a destructor for the same object concurrently.