[lttng-dev] cds_lfht_count_nodes always returns -1 for before/after counts

Jeff Layton jlayton at poochiereds.net
Sat Apr 25 17:29:02 EDT 2015

Hi, I have some code using the cds_lfht infrastructure, and recently
added a function to check to see if the table was empty using
cds_lfht_count_nodes. That function just does this:

        cds_lfht_count_nodes(ht, &before, &count, &after);

What I've found though is that when the table is empty and I know that
there are no concurrent inserts going on, the before and after counters
are always set to -1 after this call.

Is that expected behavior? For the record, I'm using this package from
the Fedora 21 repos:


Thanks in advance!
Jeff Layton <jlayton at poochiereds.net>

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