enum lfds711_freelist_query

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enum lfds711_freelist_query



Counts the number of elements in the freelist. This query is and is only safe if performed single-threaded, i.e. that no push or pop operations occur while the count operation is executing. If push or pop operations occur, it is not merely the case that the count could be wrong - in theory, it could be possible for the count to enter an infinite loop. Don't do this.


Validates the freelist. This is done by checking there are no loops. Additionally, if given as input a lfds711_misc_validation_info, which indicates an expected range of the number of elements in the freelist, counts the number of elements in the freelist and checks they fall within the expected range. As with count, both the loop check and the element count (which is in fact performed by issuing the LFDS711_FREELIST_QUERY_SINGLETHREADED_GET_COUNT query) can in theory enter an infinite loop if push or pop operations occur while the validation operation is executing. You were warned.


This enum is used by the freelist query function, lfds711_freelist_query.

See Also