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:
rcu_read_lock();
cds_lfht_count_nodes(ht, &before, &count, &after);
rcu_read_unlock();
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:
userspace-rcu-0.8.1-5.fc21.x86_64
Thanks in advance!
--
Jeff Layton <jlay...@poochiereds.net>
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