Is there a concurrent_hash_set container ?

[fdiedler]

Hi,

I see there is a concurrent_hash_map container but no concurrent_hash_set container in TBB. Is it possible to have concurrent_hash_set container ?

The concurrent_unordered_set seems to have poor performance in my application in the clear() operation.

Thanks,

[pavelkumbrasev]

We do not have concurrent_hash_set in oneTBB but you still can use concurrent_hash_map and just ignore the value (use something like bool to save some memory).
@kboyarinov what do you think is it possible to extend concurrent_hash_map to support the set behavior?

[kboyarinov]

@pavelkumbrasev @fdiedler
I think in theory it is possible to add a hash set container on top of concurrent_hash_map engine. Could you please explain your use case for such case as well as the performance issues with concurrent_unordered_set::clear to proper understand the motivation for such an extension?
Thanks in advance